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<h3>
Simon Peyton Jones pushed to branch wip/T17173
at <a href="https://gitlab.haskell.org/ghc/ghc">Glasgow Haskell Compiler / GHC</a>
</h3>
<h4>
Commits:
</h4>
<ul>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/f39a0d86de843c105dc9cd4e0bd631176300d7f7">f39a0d86</a></strong>
<div>
<span>by Simon Peyton Jones</span>
<i>at 2020-04-14T00:26:04+01:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">Major refactor of typechecking applications
Following conversation with Richard today, I have done
major surgery on tcApp and friends. Fewer arguments, less
plumbing, all good.
I also completely killed off ir_inst.
It's not as well documented as I want, yet, but I'm pushing
it up for Richard's review.
(This message will be replaced with a proper commit message.)
</pre>
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<h4>24 changed files:</h4>
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<li class="file-stats">
<a href="#cc97d81e7223ad4a3a5e801156ca632f9fa75654">
compiler/GHC/Hs/Expr.hs
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<li class="file-stats">
<a href="#7a1af22e4c32b9aa6ec708d9d3788e1c4db5da9a">
compiler/GHC/Hs/Utils.hs
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<li class="file-stats">
<a href="#6bdd5abc649727f2a802bc96ce5c276de19d3726">
compiler/GHC/HsToCore/Expr.hs
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<li class="file-stats">
<a href="#71fa5eb3ba70e1d3a6181a226c2c227d42f1eb7d">
compiler/GHC/Tc/Gen/Arrow.hs
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<li class="file-stats">
<a href="#83f745d921da7adb739e81f83e1c07e723e4a789">
compiler/GHC/Tc/Gen/Bind.hs
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<li class="file-stats">
<a href="#902811828741e6bcd64702935bbb54edbbd070ef">
compiler/GHC/Tc/Gen/Expr.hs
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<li class="file-stats">
<a href="#8dec347fbe40358b852d7b50ace1e4d62b9b6660">
compiler/GHC/Tc/Gen/Expr.hs-boot
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<li class="file-stats">
<a href="#3377164bfe9a1f1a8cfd588703ae1e0ea1e91cf9">
compiler/GHC/Tc/Gen/Match.hs
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<li class="file-stats">
<a href="#3ee8be814b6c6727880deab3772e6af922524bf0">
compiler/GHC/Tc/Gen/Pat.hs
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<a href="#04338da99bccd89402218ca19c5724762f0fe641">
compiler/GHC/Tc/Gen/Rule.hs
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<li class="file-stats">
<a href="#9ea832ccdb4b5f7508a1efd6caedeafa16b269e7">
compiler/GHC/Tc/Gen/Splice.hs
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<a href="#e65390fa5a32c453a81a1c9a3e1c4464d155ca4a">
compiler/GHC/Tc/Module.hs
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<a href="#c6e4263ee64c68e57b7525127d98243fce38b1ea">
compiler/GHC/Tc/Utils/Monad.hs
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<a href="#94c96afe1bb3b771ffbcfeeca34ce43ebbe76ccb">
compiler/GHC/Tc/Utils/TcMType.hs
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<a href="#5461e7beeb7ae73d7c01f720cbaa3fa2c5333590">
compiler/GHC/Tc/Utils/TcType.hs
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<a href="#74295edeac870ee7f2f3484ebaffab5c948b735a">
compiler/GHC/Tc/Utils/Unify.hs
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<li class="file-stats">
<a href="#6a120b0673f8920127d8fffdaa16f01b90cc92d7">
compiler/GHC/Tc/Utils/Zonk.hs
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<li class="file-stats">
<a href="#ccae4249809b5c85681f9c1f1d408faa25a97e27">
testsuite/tests/typecheck/should_fail/tcfail007.stderr
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<li class="file-stats">
<a href="#59e2871e72d297c212ded8cda348c89a347043e9">
testsuite/tests/typecheck/should_fail/tcfail010.stderr
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<li class="file-stats">
<a href="#a57ce3513c2465e57ee3f6b51dee94e099fd45d4">
testsuite/tests/typecheck/should_fail/tcfail029.stderr
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<li class="file-stats">
<a href="#fa073c4cf22cb8c288aab92ab93a4271d5832868">
testsuite/tests/typecheck/should_fail/tcfail034.stderr
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<li class="file-stats">
<a href="#60a645922a3929cf447cd215801a94fb071c22fa">
testsuite/tests/typecheck/should_fail/tcfail133.hs
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<li class="file-stats">
<a href="#f8a1d2fdb6a74c812f05828fa4c6dc3144f6dc5c">
testsuite/tests/typecheck/should_fail/tcfail143.stderr
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<li class="file-stats">
<a href="#6004820c84d977f736123dcf3de1622b42a08915">
testsuite/tests/typecheck/should_fail/tcfail208.stderr
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<h4>Changes:</h4>
<li id="cc97d81e7223ad4a3a5e801156ca632f9fa75654">
<a href="https://gitlab.haskell.org/ghc/ghc/-/commit/f39a0d86de843c105dc9cd4e0bd631176300d7f7#cc97d81e7223ad4a3a5e801156ca632f9fa75654"><strong>compiler/GHC/Hs/Expr.hs</strong></a>
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<td class="diff-line-num unfold js-unfold old_line" data-linenumber="599" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>
<td class="diff-line-num unfold js-unfold new_line" data-linenumber="599" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>
<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -599,7 +599,9 @@ type instance XLam (GhcPass _) = NoExtField</td>
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599
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599
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<pre style="margin: 0;"> <span id="LC599" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">type</span> <span class="kr" style="font-weight: 600;">instance</span> <span class="kt" style="color: #458; font-weight: 600;">XLamCase</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">GhcPass</span> <span class="kr" style="font-weight: 600;">_</span><span class="p">)</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">NoExtField</span></span>
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<td class="diff-line-num old_line" data-linenumber="600" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">
600
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<td class="diff-line-num new_line" data-linenumber="600" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">
600
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<pre style="margin: 0;"> <span id="LC600" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">type</span> <span class="kr" style="font-weight: 600;">instance</span> <span class="kt" style="color: #458; font-weight: 600;">XApp</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">GhcPass</span> <span class="kr" style="font-weight: 600;">_</span><span class="p">)</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">NoExtField</span></span>
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<td class="diff-line-num old_line" data-linenumber="601" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">
601
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<td class="diff-line-num new_line" data-linenumber="601" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">
601
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<pre style="margin: 0;"> <span id="LC601" class="line" lang="haskell"></span>
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<td class="diff-line-num old old_line" data-linenumber="602" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">
602
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<td class="diff-line-num new_line old" data-linenumber="602" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">
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<pre style="margin: 0;">-<span id="LC602" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">type</span> <span class="kr" style="font-weight: 600;">instance</span> <span class="kt" style="color: #458; font-weight: 600;">XAppTypeE</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">GhcPass</span> <span class="kr" style="font-weight: 600;">_</span><span class="p">)</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">NoExtField</span></span>
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<td class="diff-line-num new old_line" data-linenumber="603" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
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<td class="diff-line-num new new_line" data-linenumber="602" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
602
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<pre style="margin: 0;">+<span id="LC602" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">type</span> <span class="kr" style="font-weight: 600;">instance</span> <span class="kt" style="color: #458; font-weight: 600;">XAppTypeE</span> <span class="kt" style="color: #458; font-weight: 600;">GhcPs</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">NoExtField</span></span>
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<td class="diff-line-num new new_line" data-linenumber="603" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
603
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<pre style="margin: 0;">+<span id="LC603" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">type</span> <span class="kr" style="font-weight: 600;">instance</span> <span class="kt" style="color: #458; font-weight: 600;">XAppTypeE</span> <span class="kt" style="color: #458; font-weight: 600;">GhcRn</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">NoExtField</span></span>
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<td class="diff-line-num new new_line" data-linenumber="604" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
604
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<pre style="margin: 0;">+<span id="LC604" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">type</span> <span class="kr" style="font-weight: 600;">instance</span> <span class="kt" style="color: #458; font-weight: 600;">XAppTypeE</span> <span class="kt" style="color: #458; font-weight: 600;">GhcTc</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">Type</span></span>
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603
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<td class="diff-line-num new_line" data-linenumber="605" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">
605
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<pre style="margin: 0;"> <span id="LC605" class="line" lang="haskell"></span>
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604
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<pre style="margin: 0;"> <span id="LC606" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">type</span> <span class="kr" style="font-weight: 600;">instance</span> <span class="kt" style="color: #458; font-weight: 600;">XOpApp</span> <span class="kt" style="color: #458; font-weight: 600;">GhcPs</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">NoExtField</span></span>
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605
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<td class="diff-line-num new_line" data-linenumber="607" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">
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<pre style="margin: 0;"> <span id="LC607" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">type</span> <span class="kr" style="font-weight: 600;">instance</span> <span class="kt" style="color: #458; font-weight: 600;">XOpApp</span> <span class="kt" style="color: #458; font-weight: 600;">GhcRn</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">Fixity</span></span>
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<li id="7a1af22e4c32b9aa6ec708d9d3788e1c4db5da9a">
<a href="https://gitlab.haskell.org/ghc/ghc/-/commit/f39a0d86de843c105dc9cd4e0bd631176300d7f7#7a1af22e4c32b9aa6ec708d9d3788e1c4db5da9a"><strong>compiler/GHC/Hs/Utils.hs</strong></a>
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<td class="diff-line-num unfold js-unfold old_line" data-linenumber="185" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>
<td class="diff-line-num unfold js-unfold new_line" data-linenumber="185" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>
<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -185,8 +185,7 @@ mkLocatedList ms = L (combineLocs (head ms) (last ms)) ms</td>
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<pre style="margin: 0;"> <span id="LC185" class="line" lang="haskell"><span class="n" style="color: #333;">mkHsApp</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">LHsExpr</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">GhcPass</span> <span class="n" style="color: #333;">id</span><span class="p">)</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">LHsExpr</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">GhcPass</span> <span class="n" style="color: #333;">id</span><span class="p">)</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">LHsExpr</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">GhcPass</span> <span class="n" style="color: #333;">id</span><span class="p">)</span></span>
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<pre style="margin: 0;"> <span id="LC186" class="line" lang="haskell"><span class="n" style="color: #333;">mkHsApp</span> <span class="n" style="color: #333;">e1</span> <span class="n" style="color: #333;">e2</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">addCLoc</span> <span class="n" style="color: #333;">e1</span> <span class="n" style="color: #333;">e2</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">HsApp</span> <span class="n" style="color: #333;">noExtField</span> <span class="n" style="color: #333;">e1</span> <span class="n" style="color: #333;">e2</span><span class="p">)</span></span>
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<pre style="margin: 0;"> <span id="LC187" class="line" lang="haskell"></span>
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<pre style="margin: 0;">-<span id="LC188" class="line" lang="haskell"><span class="n" style="color: #333;">mkHsAppType</span> <span class="o" style="font-weight: 600;">::</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">NoGhcTc</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">GhcPass</span> <span class="n" style="color: #333;">id</span><span class="p">)</span> <span class="o" style="font-weight: 600;">~</span> <span class="kt" style="color: #458; font-weight: 600;">GhcRn</span><span class="p">)</span></span>
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<pre style="margin: 0;">-<span id="LC189" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=></span> <span class="kt" style="color: #458; font-weight: 600;">LHsExpr</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">GhcPass</span> <span class="n" style="color: #333;">id</span><span class="p">)</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">LHsWcType</span> <span class="kt" style="color: #458; font-weight: 600;">GhcRn</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">LHsExpr</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">GhcPass</span> <span class="n" style="color: #333;">id</span><span class="p">)</span></span>
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<pre style="margin: 0;">+<span id="LC188" class="line" lang="haskell"><span class="n" style="color: #333;">mkHsAppType</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">LHsExpr</span> <span class="kt" style="color: #458; font-weight: 600;">GhcRn</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">LHsWcType</span> <span class="kt" style="color: #458; font-weight: 600;">GhcRn</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">LHsExpr</span> <span class="kt" style="color: #458; font-weight: 600;">GhcRn</span></span>
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<pre style="margin: 0;"> <span id="LC189" class="line" lang="haskell"><span class="n" style="color: #333;">mkHsAppType</span> <span class="n" style="color: #333;">e</span> <span class="n" style="color: #333;">t</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">addCLoc</span> <span class="n" style="color: #333;">e</span> <span class="n" style="color: #333;">t_body</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">HsAppType</span> <span class="n" style="color: #333;">noExtField</span> <span class="n" style="color: #333;">e</span> <span class="n" style="color: #333;">paren_wct</span><span class="p">)</span></span>
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<pre style="margin: 0;"> <span id="LC190" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">where</span></span>
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<pre style="margin: 0;"> <span id="LC191" class="line" lang="haskell"> <span class="n" style="color: #333;">t_body</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">hswc_body</span> <span class="n" style="color: #333;">t</span></span>
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<a href="https://gitlab.haskell.org/ghc/ghc/-/commit/f39a0d86de843c105dc9cd4e0bd631176300d7f7#6bdd5abc649727f2a802bc96ce5c276de19d3726"><strong>compiler/GHC/HsToCore/Expr.hs</strong></a>
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<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -319,9 +319,9 @@ dsExpr e@(HsApp _ fun arg)</td>
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<pre style="margin: 0;"> <span id="LC319" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">dsWhenNoErrs</span> <span class="p">(</span><span class="n" style="color: #333;">dsLExprNoLP</span> <span class="n" style="color: #333;">arg</span><span class="p">)</span></span>
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<pre style="margin: 0;"> <span id="LC320" class="line" lang="haskell"> <span class="p">(</span><span class="nf" style="color: #900; font-weight: 600;">\</span><span class="n" style="color: #333;">arg'</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">mkCoreAppDs</span> <span class="p">(</span><span class="n" style="color: #333;">text</span> <span class="s" style="color: #d14;">"HsApp"</span> <span class="o" style="font-weight: 600;"><+></span> <span class="n" style="color: #333;">ppr</span> <span class="n" style="color: #333;">e</span><span class="p">)</span> <span class="n" style="color: #333;">fun'</span> <span class="n" style="color: #333;">arg'</span><span class="p">)</span> <span class="p">}</span></span>
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<pre style="margin: 0;"> <span id="LC321" class="line" lang="haskell"></span>
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<pre style="margin: 0;">-<span id="LC322" class="line" lang="haskell"><span class="n" style="color: #333;">dsExpr</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">HsAppType</span> <span class="kr" style="font-weight: 600;"><span class="idiff left right">_</span></span> <span class="n" style="color: #333;">e</span> <span class="kr" style="font-weight: 600;">_</span><span class="p">)</span></span>
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<pre style="margin: 0;">-<span id="LC323" class="line" lang="haskell"> <span class="idiff left"> </span><span class="c1" style="color: #998; font-style: italic;"><span class="idiff right">-- ignore type arguments here; they're in the wrappers instead at this point</span></span></span>
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<pre style="margin: 0;">-<span id="LC324" class="line" lang="haskell"> <span class="o" style="font-weight: 600;"><span class="idiff left">=</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">dsLExpr</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff right">e</span></span></span>
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<pre style="margin: 0;">+<span id="LC322" class="line" lang="haskell"><span class="n" style="color: #333;">dsExpr</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">HsAppType</span> <span class="n" style="color: #333;"><span class="idiff left right">ty</span></span> <span class="n" style="color: #333;">e</span> <span class="kr" style="font-weight: 600;">_</span><span class="p">)</span></span>
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<pre style="margin: 0;">+<span id="LC323" class="line" lang="haskell"> <span class="o" style="font-weight: 600;"><span class="idiff left">=</span></span><span class="idiff"> </span><span class="kr" style="font-weight: 600;"><span class="idiff">do</span></span><span class="idiff"> </span><span class="p"><span class="idiff">{</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">e'</span></span><span class="idiff"> </span><span class="o" style="font-weight: 600;"><span class="idiff"><-</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">dsLExpr</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff right">e</span></span></span>
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<pre style="margin: 0;">+<span id="LC324" class="line" lang="haskell"> <span class="idiff left"> </span><span class="p"><span class="idiff">;</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">return</span></span><span class="idiff"> </span><span class="p"><span class="idiff">(</span></span><span class="kt" style="color: #458; font-weight: 600;"><span class="idiff">App</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">e'</span></span><span class="idiff"> </span><span class="p"><span class="idiff">(</span></span><span class="n" style="color: #333;"><span class="idiff">mkTyArg</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">ty</span></span><span class="p"><span class="idiff">))</span></span><span class="idiff"> </span><span class="p"><span class="idiff right">}</span></span></span>
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<pre style="margin: 0;"> <span id="LC325" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC326" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">{-</span></span>
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<pre style="margin: 0;"> <span id="LC327" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">Note [Desugaring vars]</span></span>
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<a href="https://gitlab.haskell.org/ghc/ghc/-/commit/f39a0d86de843c105dc9cd4e0bd631176300d7f7#71fa5eb3ba70e1d3a6181a226c2c227d42f1eb7d"><strong>compiler/GHC/Tc/Gen/Arrow.hs</strong></a>
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<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -14,7 +14,7 @@ module GHC.Tc.Gen.Arrow ( tcProc ) where</td>
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<pre style="margin: 0;"> <span id="LC14" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC15" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GhcPrelude</span></span>
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16
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<pre style="margin: 0;"> <span id="LC16" class="line" lang="haskell"></span>
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<pre style="margin: 0;">-<span id="LC17" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="err" style="color: #a61717; background-color: #e3d2d2;">{-#</span> <span class="nn" style="color: #555;">SOURCE</span> <span class="o" style="font-weight: 600;">#-</span><span class="p">}</span> <span class="kt" style="color: #458; font-weight: 600;">GHC</span><span class="o" style="font-weight: 600;">.</span><span class="kt" style="color: #458; font-weight: 600;">Tc</span><span class="o" style="font-weight: 600;">.</span><span class="kt" style="color: #458; font-weight: 600;">Gen</span><span class="o" style="font-weight: 600;">.</span><span class="kt" style="color: #458; font-weight: 600;">Expr</span><span class="p">(</span> <span class="n" style="color: #333;">tc<span class="idiff left right">Mono</span>Expr</span><span class="p">,</span> <span class="n" style="color: #333;">tcInferRho</span><span class="p">,</span> <span class="n" style="color: #333;">tcSyntaxOp</span><span class="p">,</span> <span class="n" style="color: #333;">tcCheckId</span><span class="p">,</span> <span class="n" style="color: #333;">tcPolyExpr</span> <span class="p">)</span></span>
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<pre style="margin: 0;">+<span id="LC17" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="err" style="color: #a61717; background-color: #e3d2d2;">{-#</span> <span class="nn" style="color: #555;">SOURCE</span> <span class="o" style="font-weight: 600;">#-</span><span class="p">}</span> <span class="kt" style="color: #458; font-weight: 600;">GHC</span><span class="o" style="font-weight: 600;">.</span><span class="kt" style="color: #458; font-weight: 600;">Tc</span><span class="o" style="font-weight: 600;">.</span><span class="kt" style="color: #458; font-weight: 600;">Gen</span><span class="o" style="font-weight: 600;">.</span><span class="kt" style="color: #458; font-weight: 600;">Expr</span><span class="p">(</span> <span class="n" style="color: #333;">tc<span class="idiff left right">L</span>Expr</span><span class="p">,</span> <span class="n" style="color: #333;">tcInferRho</span><span class="p">,</span> <span class="n" style="color: #333;">tcSyntaxOp</span><span class="p">,</span> <span class="n" style="color: #333;">tcCheckId</span><span class="p">,</span> <span class="n" style="color: #333;">tcPolyExpr</span> <span class="p">)</span></span>
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<pre style="margin: 0;"> <span id="LC18" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC19" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Hs</span></span>
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<pre style="margin: 0;"> <span id="LC20" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Tc.Gen.Match</span></span>
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<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -161,7 +161,7 @@ tc_cmd env in_cmd@(HsCmdCase x scrut matches) (stk, res_ty)</td>
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161
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<pre style="margin: 0;"> <span id="LC161" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">tcCmd</span> <span class="n" style="color: #333;">env</span> <span class="n" style="color: #333;">body</span> <span class="p">(</span><span class="n" style="color: #333;">stk</span><span class="p">,</span> <span class="n" style="color: #333;">res_ty'</span><span class="p">)</span> <span class="p">}</span></span>
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<pre style="margin: 0;"> <span id="LC162" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC163" class="line" lang="haskell"><span class="n" style="color: #333;">tc_cmd</span> <span class="n" style="color: #333;">env</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">HsCmdIf</span> <span class="n" style="color: #333;">x</span> <span class="kt" style="color: #458; font-weight: 600;">NoSyntaxExprRn</span> <span class="n" style="color: #333;">pred</span> <span class="n" style="color: #333;">b1</span> <span class="n" style="color: #333;">b2</span><span class="p">)</span> <span class="n" style="color: #333;">res_ty</span> <span class="c1" style="color: #998; font-style: italic;">-- Ordinary 'if'</span></span>
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<pre style="margin: 0;">-<span id="LC164" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">do</span> <span class="p">{</span> <span class="n" style="color: #333;">pred'</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">tc<span class="idiff left right">Mono</span>Expr</span> <span class="n" style="color: #333;">pred</span> <span class="p">(</span><span class="n" style="color: #333;">mkCheckExpType</span> <span class="n" style="color: #333;">boolTy</span><span class="p">)</span></span>
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<pre style="margin: 0;">+<span id="LC164" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">do</span> <span class="p">{</span> <span class="n" style="color: #333;">pred'</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">tc<span class="idiff left right">L</span>Expr</span> <span class="n" style="color: #333;">pred</span> <span class="p">(</span><span class="n" style="color: #333;">mkCheckExpType</span> <span class="n" style="color: #333;">boolTy</span><span class="p">)</span></span>
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<pre style="margin: 0;"> <span id="LC165" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">b1'</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">tcCmd</span> <span class="n" style="color: #333;">env</span> <span class="n" style="color: #333;">b1</span> <span class="n" style="color: #333;">res_ty</span></span>
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166
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<pre style="margin: 0;"> <span id="LC166" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">b2'</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">tcCmd</span> <span class="n" style="color: #333;">env</span> <span class="n" style="color: #333;">b2</span> <span class="n" style="color: #333;">res_ty</span></span>
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<pre style="margin: 0;"> <span id="LC167" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">return</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">HsCmdIf</span> <span class="n" style="color: #333;">x</span> <span class="kt" style="color: #458; font-weight: 600;">NoSyntaxExprTc</span> <span class="n" style="color: #333;">pred'</span> <span class="n" style="color: #333;">b1'</span> <span class="n" style="color: #333;">b2'</span><span class="p">)</span></span>
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<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -179,7 +179,7 @@ tc_cmd env (HsCmdIf x fun@(SyntaxExprRn {}) pred b1 b2) res_ty -- Rebindable syn</td>
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179
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179
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<pre style="margin: 0;"> <span id="LC179" class="line" lang="haskell"> <span class="p">;</span> <span class="p">(</span><span class="n" style="color: #333;">pred'</span><span class="p">,</span> <span class="n" style="color: #333;">fun'</span><span class="p">)</span></span>
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180
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180
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<pre style="margin: 0;"> <span id="LC180" class="line" lang="haskell"> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">tcSyntaxOp</span> <span class="kt" style="color: #458; font-weight: 600;">IfOrigin</span> <span class="n" style="color: #333;">fun</span> <span class="p">(</span><span class="n" style="color: #333;">map</span> <span class="n" style="color: #333;">synKnownType</span> <span class="p">[</span><span class="n" style="color: #333;">pred_ty</span><span class="p">,</span> <span class="n" style="color: #333;">r_ty</span><span class="p">,</span> <span class="n" style="color: #333;">r_ty</span><span class="p">])</span></span>
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181
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181
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<pre style="margin: 0;"> <span id="LC181" class="line" lang="haskell"> <span class="p">(</span><span class="n" style="color: #333;">mkCheckExpType</span> <span class="n" style="color: #333;">r_ty</span><span class="p">)</span> <span class="o" style="font-weight: 600;">$</span> <span class="nf" style="color: #900; font-weight: 600;">\</span> <span class="kr" style="font-weight: 600;">_</span> <span class="o" style="font-weight: 600;">-></span></span>
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182
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<pre style="margin: 0;">-<span id="LC182" class="line" lang="haskell"> <span class="n" style="color: #333;">tc<span class="idiff left right">Mono</span>Expr</span> <span class="n" style="color: #333;">pred</span> <span class="p">(</span><span class="n" style="color: #333;">mkCheckExpType</span> <span class="n" style="color: #333;">pred_ty</span><span class="p">)</span></span>
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182
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<pre style="margin: 0;">+<span id="LC182" class="line" lang="haskell"> <span class="n" style="color: #333;">tc<span class="idiff left right">L</span>Expr</span> <span class="n" style="color: #333;">pred</span> <span class="p">(</span><span class="n" style="color: #333;">mkCheckExpType</span> <span class="n" style="color: #333;">pred_ty</span><span class="p">)</span></span>
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183
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183
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<pre style="margin: 0;"> <span id="LC183" class="line" lang="haskell"></span>
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184
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184
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<pre style="margin: 0;"> <span id="LC184" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">b1'</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">tcCmd</span> <span class="n" style="color: #333;">env</span> <span class="n" style="color: #333;">b1</span> <span class="n" style="color: #333;">res_ty</span></span>
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185
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185
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<pre style="margin: 0;"> <span id="LC185" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">b2'</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">tcCmd</span> <span class="n" style="color: #333;">env</span> <span class="n" style="color: #333;">b2</span> <span class="n" style="color: #333;">res_ty</span></span>
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<td class="diff-line-num unfold js-unfold old_line" data-linenumber="206" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>
<td class="diff-line-num unfold js-unfold new_line" data-linenumber="206" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>
<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -206,9 +206,9 @@ tc_cmd env cmd@(HsCmdArrApp _ fun arg ho_app lr) (_, res_ty)</td>
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206
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206
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<pre style="margin: 0;"> <span id="LC206" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">addErrCtxt</span> <span class="p">(</span><span class="n" style="color: #333;">cmdCtxt</span> <span class="n" style="color: #333;">cmd</span><span class="p">)</span> <span class="o" style="font-weight: 600;">$</span></span>
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207
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<pre style="margin: 0;"> <span id="LC207" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">do</span> <span class="p">{</span> <span class="n" style="color: #333;">arg_ty</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">newOpenFlexiTyVarTy</span></span>
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208
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208
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<pre style="margin: 0;"> <span id="LC208" class="line" lang="haskell"> <span class="p">;</span> <span class="kr" style="font-weight: 600;">let</span> <span class="n" style="color: #333;">fun_ty</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">mkCmdArrTy</span> <span class="n" style="color: #333;">env</span> <span class="n" style="color: #333;">arg_ty</span> <span class="n" style="color: #333;">res_ty</span></span>
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209
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<pre style="margin: 0;">-<span id="LC209" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">fun'</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">select_arrow_scope</span> <span class="p">(</span><span class="n" style="color: #333;">tc<span class="idiff left right">Mono</span>Expr</span> <span class="n" style="color: #333;">fun</span> <span class="p">(</span><span class="n" style="color: #333;">mkCheckExpType</span> <span class="n" style="color: #333;">fun_ty</span><span class="p">))</span></span>
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209
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<pre style="margin: 0;">+<span id="LC209" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">fun'</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">select_arrow_scope</span> <span class="p">(</span><span class="n" style="color: #333;">tc<span class="idiff left right">L</span>Expr</span> <span class="n" style="color: #333;">fun</span> <span class="p">(</span><span class="n" style="color: #333;">mkCheckExpType</span> <span class="n" style="color: #333;">fun_ty</span><span class="p">))</span></span>
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210
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210
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<pre style="margin: 0;"> <span id="LC210" class="line" lang="haskell"></span>
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211
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<pre style="margin: 0;">-<span id="LC211" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">arg'</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">tc<span class="idiff left right">Mono</span>Expr</span> <span class="n" style="color: #333;">arg</span> <span class="p">(</span><span class="n" style="color: #333;">mkCheckExpType</span> <span class="n" style="color: #333;">arg_ty</span><span class="p">)</span></span>
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211
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<pre style="margin: 0;">+<span id="LC211" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">arg'</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">tc<span class="idiff left right">L</span>Expr</span> <span class="n" style="color: #333;">arg</span> <span class="p">(</span><span class="n" style="color: #333;">mkCheckExpType</span> <span class="n" style="color: #333;">arg_ty</span><span class="p">)</span></span>
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212
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212
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<pre style="margin: 0;"> <span id="LC212" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC213" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">return</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">HsCmdArrApp</span> <span class="n" style="color: #333;">fun_ty</span> <span class="n" style="color: #333;">fun'</span> <span class="n" style="color: #333;">arg'</span> <span class="n" style="color: #333;">ho_app</span> <span class="n" style="color: #333;">lr</span><span class="p">)</span> <span class="p">}</span></span>
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<pre style="margin: 0;"> <span id="LC214" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">where</span></span>
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<td class="diff-line-num unfold js-unfold new_line" data-linenumber="233" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>
<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -233,7 +233,7 @@ tc_cmd env cmd@(HsCmdApp x fun arg) (cmd_stk, res_ty)</td>
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233
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233
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<pre style="margin: 0;"> <span id="LC233" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">addErrCtxt</span> <span class="p">(</span><span class="n" style="color: #333;">cmdCtxt</span> <span class="n" style="color: #333;">cmd</span><span class="p">)</span> <span class="o" style="font-weight: 600;">$</span></span>
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234
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234
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<pre style="margin: 0;"> <span id="LC234" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">do</span> <span class="p">{</span> <span class="n" style="color: #333;">arg_ty</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">newOpenFlexiTyVarTy</span></span>
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235
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235
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<pre style="margin: 0;"> <span id="LC235" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">fun'</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">tcCmd</span> <span class="n" style="color: #333;">env</span> <span class="n" style="color: #333;">fun</span> <span class="p">(</span><span class="n" style="color: #333;">mkPairTy</span> <span class="n" style="color: #333;">arg_ty</span> <span class="n" style="color: #333;">cmd_stk</span><span class="p">,</span> <span class="n" style="color: #333;">res_ty</span><span class="p">)</span></span>
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236
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<pre style="margin: 0;">-<span id="LC236" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">arg'</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">tc<span class="idiff left right">Mono</span>Expr</span> <span class="n" style="color: #333;">arg</span> <span class="p">(</span><span class="n" style="color: #333;">mkCheckExpType</span> <span class="n" style="color: #333;">arg_ty</span><span class="p">)</span></span>
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<pre style="margin: 0;">+<span id="LC236" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">arg'</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">tc<span class="idiff left right">L</span>Expr</span> <span class="n" style="color: #333;">arg</span> <span class="p">(</span><span class="n" style="color: #333;">mkCheckExpType</span> <span class="n" style="color: #333;">arg_ty</span><span class="p">)</span></span>
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237
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237
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<pre style="margin: 0;"> <span id="LC237" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">return</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">HsCmdApp</span> <span class="n" style="color: #333;">x</span> <span class="n" style="color: #333;">fun'</span> <span class="n" style="color: #333;">arg'</span><span class="p">)</span> <span class="p">}</span></span>
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238
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<pre style="margin: 0;"> <span id="LC238" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC239" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-------------------------------------------</span></span>
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<li id="83f745d921da7adb739e81f83e1c07e723e4a789">
<a href="https://gitlab.haskell.org/ghc/ghc/-/commit/f39a0d86de843c105dc9cd4e0bd631176300d7f7#83f745d921da7adb739e81f83e1c07e723e4a789"><strong>compiler/GHC/Tc/Gen/Bind.hs</strong></a>
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<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -23,7 +23,7 @@ where</td>
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<pre style="margin: 0;"> <span id="LC23" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GhcPrelude</span></span>
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<pre style="margin: 0;"> <span id="LC24" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC25" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="err" style="color: #a61717; background-color: #e3d2d2;">{-#</span> <span class="nn" style="color: #555;">SOURCE</span> <span class="o" style="font-weight: 600;">#-</span><span class="p">}</span> <span class="kt" style="color: #458; font-weight: 600;">GHC</span><span class="o" style="font-weight: 600;">.</span><span class="kt" style="color: #458; font-weight: 600;">Tc</span><span class="o" style="font-weight: 600;">.</span><span class="kt" style="color: #458; font-weight: 600;">Gen</span><span class="o" style="font-weight: 600;">.</span><span class="kt" style="color: #458; font-weight: 600;">Match</span> <span class="p">(</span> <span class="n" style="color: #333;">tcGRHSsPat</span><span class="p">,</span> <span class="n" style="color: #333;">tcMatchesFun</span> <span class="p">)</span></span>
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<pre style="margin: 0;">-<span id="LC26" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="err" style="color: #a61717; background-color: #e3d2d2;">{-#</span> <span class="nn" style="color: #555;">SOURCE</span> <span class="o" style="font-weight: 600;">#-</span><span class="p">}</span> <span class="kt" style="color: #458; font-weight: 600;">GHC</span><span class="o" style="font-weight: 600;">.</span><span class="kt" style="color: #458; font-weight: 600;">Tc</span><span class="o" style="font-weight: 600;">.</span><span class="kt" style="color: #458; font-weight: 600;">Gen</span><span class="o" style="font-weight: 600;">.</span><span class="kt" style="color: #458; font-weight: 600;">Expr</span> <span class="p">(</span> <span class="n" style="color: #333;">tc<span class="idiff left right">Mono</span>Expr</span> <span class="p">)</span></span>
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<pre style="margin: 0;">+<span id="LC26" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="err" style="color: #a61717; background-color: #e3d2d2;">{-#</span> <span class="nn" style="color: #555;">SOURCE</span> <span class="o" style="font-weight: 600;">#-</span><span class="p">}</span> <span class="kt" style="color: #458; font-weight: 600;">GHC</span><span class="o" style="font-weight: 600;">.</span><span class="kt" style="color: #458; font-weight: 600;">Tc</span><span class="o" style="font-weight: 600;">.</span><span class="kt" style="color: #458; font-weight: 600;">Gen</span><span class="o" style="font-weight: 600;">.</span><span class="kt" style="color: #458; font-weight: 600;">Expr</span> <span class="p">(</span> <span class="n" style="color: #333;">tc<span class="idiff left right">L</span>Expr</span> <span class="p">)</span></span>
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<pre style="margin: 0;"> <span id="LC27" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="err" style="color: #a61717; background-color: #e3d2d2;">{-#</span> <span class="nn" style="color: #555;">SOURCE</span> <span class="o" style="font-weight: 600;">#-</span><span class="p">}</span> <span class="kt" style="color: #458; font-weight: 600;">GHC</span><span class="o" style="font-weight: 600;">.</span><span class="kt" style="color: #458; font-weight: 600;">Tc</span><span class="o" style="font-weight: 600;">.</span><span class="kt" style="color: #458; font-weight: 600;">TyCl</span><span class="o" style="font-weight: 600;">.</span><span class="kt" style="color: #458; font-weight: 600;">PatSyn</span> <span class="p">(</span> <span class="n" style="color: #333;">tcPatSynDecl</span><span class="p">,</span> <span class="n" style="color: #333;">tcPatSynBuilderBind</span> <span class="p">)</span></span>
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<pre style="margin: 0;"> <span id="LC28" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Core</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Tickish</span> <span class="p">(</span><span class="o" style="font-weight: 600;">..</span><span class="p">))</span></span>
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<pre style="margin: 0;"> <span id="LC29" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Types.CostCentre</span> <span class="p">(</span><span class="nf" style="color: #900; font-weight: 600;">mkUserCC</span><span class="p">,</span> <span class="kt" style="color: #458; font-weight: 600;">CCFlavour</span><span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">DeclCC</span><span class="p">))</span></span>
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<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -354,7 +354,7 @@ tcLocalBinds (HsIPBinds x (IPBinds _ ip_binds)) thing_inside</td>
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<pre style="margin: 0;"> <span id="LC354" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">do</span> <span class="p">{</span> <span class="n" style="color: #333;">ty</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">newOpenFlexiTyVarTy</span></span>
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355
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355
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<pre style="margin: 0;"> <span id="LC355" class="line" lang="haskell"> <span class="p">;</span> <span class="kr" style="font-weight: 600;">let</span> <span class="n" style="color: #333;">p</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">mkStrLitTy</span> <span class="o" style="font-weight: 600;">$</span> <span class="n" style="color: #333;">hsIPNameFS</span> <span class="n" style="color: #333;">ip</span></span>
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356
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<pre style="margin: 0;"> <span id="LC356" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">ip_id</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">newDict</span> <span class="n" style="color: #333;">ipClass</span> <span class="p">[</span> <span class="n" style="color: #333;">p</span><span class="p">,</span> <span class="n" style="color: #333;">ty</span> <span class="p">]</span></span>
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357
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<pre style="margin: 0;">-<span id="LC357" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">expr'</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">tc<span class="idiff left right">Mono</span>Expr</span> <span class="n" style="color: #333;">expr</span> <span class="p">(</span><span class="n" style="color: #333;">mkCheckExpType</span> <span class="n" style="color: #333;">ty</span><span class="p">)</span></span>
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<pre style="margin: 0;">+<span id="LC357" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">expr'</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">tc<span class="idiff left right">L</span>Expr</span> <span class="n" style="color: #333;">expr</span> <span class="p">(</span><span class="n" style="color: #333;">mkCheckExpType</span> <span class="n" style="color: #333;">ty</span><span class="p">)</span></span>
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358
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358
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<pre style="margin: 0;"> <span id="LC358" class="line" lang="haskell"> <span class="p">;</span> <span class="kr" style="font-weight: 600;">let</span> <span class="n" style="color: #333;">d</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">toDict</span> <span class="n" style="color: #333;">ipClass</span> <span class="n" style="color: #333;">p</span> <span class="n" style="color: #333;">ty</span> <span class="p">`</span><span class="n" style="color: #333;">fmap</span><span class="p">`</span> <span class="n" style="color: #333;">expr'</span></span>
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359
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359
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<pre style="margin: 0;"> <span id="LC359" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">return</span> <span class="p">(</span><span class="n" style="color: #333;">ip_id</span><span class="p">,</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">IPBind</span> <span class="n" style="color: #333;">noExtField</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Right</span> <span class="n" style="color: #333;">ip_id</span><span class="p">)</span> <span class="n" style="color: #333;">d</span><span class="p">))</span> <span class="p">}</span></span>
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360
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<pre style="margin: 0;"> <span id="LC360" class="line" lang="haskell"> <span class="n" style="color: #333;">tc_ip_bind</span> <span class="kr" style="font-weight: 600;">_</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">IPBind</span> <span class="kr" style="font-weight: 600;">_</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Right</span> <span class="p">{})</span> <span class="kr" style="font-weight: 600;">_</span><span class="p">)</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">panic</span> <span class="s" style="color: #d14;">"tc_ip_bind"</span></span>
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<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -1267,9 +1267,7 @@ tcMonoBinds is_rec sig_fn no_gen</td>
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1267
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<pre style="margin: 0;"> <span id="LC1267" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- We want to infer a higher-rank type for f</span></span>
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1268
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<pre style="margin: 0;"> <span id="LC1268" class="line" lang="haskell"> <span class="n" style="color: #333;">setSrcSpan</span> <span class="n" style="color: #333;">b_loc</span> <span class="o" style="font-weight: 600;">$</span></span>
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1269
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<pre style="margin: 0;"> <span id="LC1269" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">do</span> <span class="p">{</span> <span class="p">((</span><span class="n" style="color: #333;">co_fn</span><span class="p">,</span> <span class="n" style="color: #333;">matches'</span><span class="p">),</span> <span class="n" style="color: #333;">rhs_ty</span><span class="p">)</span></span>
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1270
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<pre style="margin: 0;">-<span id="LC1270" class="line" lang="haskell"> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">tcInferInst</span> <span class="o" style="font-weight: 600;">$</span> <span class="nf" style="color: #900; font-weight: 600;">\</span> <span class="n" style="color: #333;">exp_ty</span> <span class="o" style="font-weight: 600;">-></span></span>
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1271
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<pre style="margin: 0;">-<span id="LC1271" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- tcInferInst: see GHC.Tc.Utils.Unify,</span></span>
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1272
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<pre style="margin: 0;">-<span id="LC1272" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- Note [Deep instantiation of InferResult] in GHC.Tc.Utils.Unify</span></span>
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<pre style="margin: 0;">+<span id="LC1270" class="line" lang="haskell"> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">tcInfer</span> <span class="o" style="font-weight: 600;">$</span> <span class="nf" style="color: #900; font-weight: 600;">\</span> <span class="n" style="color: #333;">exp_ty</span> <span class="o" style="font-weight: 600;">-></span></span>
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1273
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1271
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<pre style="margin: 0;"> <span id="LC1271" class="line" lang="haskell"> <span class="n" style="color: #333;">tcExtendBinderStack</span> <span class="p">[</span><span class="kt" style="color: #458; font-weight: 600;">TcIdBndr_ExpType</span> <span class="n" style="color: #333;">name</span> <span class="n" style="color: #333;">exp_ty</span> <span class="kt" style="color: #458; font-weight: 600;">NotTopLevel</span><span class="p">]</span> <span class="o" style="font-weight: 600;">$</span></span>
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1274
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<pre style="margin: 0;"> <span id="LC1272" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- We extend the error context even for a non-recursive</span></span>
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1275
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<pre style="margin: 0;"> <span id="LC1273" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- function so that in type error messages we show the</span></span>
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<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -1366,7 +1364,7 @@ tcLhs sig_fn no_gen (PatBind { pat_lhs = pat, pat_rhs = grhss })</td>
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<pre style="margin: 0;"> <span id="LC1364" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- See Note [Existentials in pattern bindings]</span></span>
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<pre style="margin: 0;"> <span id="LC1365" class="line" lang="haskell"> <span class="p">;</span> <span class="p">((</span><span class="n" style="color: #333;">pat'</span><span class="p">,</span> <span class="n" style="color: #333;">nosig_mbis</span><span class="p">),</span> <span class="n" style="color: #333;">pat_ty</span><span class="p">)</span></span>
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1368
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<pre style="margin: 0;"> <span id="LC1366" class="line" lang="haskell"> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">addErrCtxt</span> <span class="p">(</span><span class="n" style="color: #333;">patMonoBindsCtxt</span> <span class="n" style="color: #333;">pat</span> <span class="n" style="color: #333;">grhss</span><span class="p">)</span> <span class="o" style="font-weight: 600;">$</span></span>
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1369
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<pre style="margin: 0;">-<span id="LC1369" class="line" lang="haskell"> <span class="n" style="color: #333;">tcInfer<span class="idiff left">Inst</span></span><span class="idiff"> </span><span class="o" style="font-weight: 600;"><span class="idiff">$</span></span><span class="idiff"> </span><span class="nf" style="color: #900; font-weight: 600;"><span class="idiff">\</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">exp_ty</span></span><span class="idiff"> </span><span class="o" style="font-weight: 600;"><span class="idiff">-></span></span><span class="idiff"> </span><span class="c1" style="color: #998; font-style: italic;"><span class="idiff right">-- The ir_inst field is irrelevant for patterns</span></span></span>
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<pre style="margin: 0;">+<span id="LC1367" class="line" lang="haskell"> <span class="n" style="color: #333;">tcInfer</span><span class="idiff left"> </span><span class="o" style="font-weight: 600;"><span class="idiff">$</span></span><span class="idiff"> </span><span class="nf" style="color: #900; font-weight: 600;"><span class="idiff">\</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">exp_ty</span></span><span class="idiff"> </span><span class="o" style="font-weight: 600;"><span class="idiff right">-></span></span></span>
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<pre style="margin: 0;"> <span id="LC1368" class="line" lang="haskell"> <span class="n" style="color: #333;">tcLetPat</span> <span class="n" style="color: #333;">inst_sig_fun</span> <span class="n" style="color: #333;">no_gen</span> <span class="n" style="color: #333;">pat</span> <span class="n" style="color: #333;">exp_ty</span> <span class="o" style="font-weight: 600;">$</span></span>
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<pre style="margin: 0;"> <span id="LC1369" class="line" lang="haskell"> <span class="n" style="color: #333;">mapM</span> <span class="n" style="color: #333;">lookup_info</span> <span class="n" style="color: #333;">nosig_names</span></span>
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<pre style="margin: 0;"> <span id="LC1370" class="line" lang="haskell"></span>
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<a href="https://gitlab.haskell.org/ghc/ghc/-/commit/f39a0d86de843c105dc9cd4e0bd631176300d7f7#902811828741e6bcd64702935bbb54edbbd070ef"><strong>compiler/GHC/Tc/Gen/Expr.hs</strong></a>
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<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -7,20 +7,21 @@</td>
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<pre style="margin: 0;"> <span id="LC7" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC8" class="line" lang="haskell"><span class="cp" style="color: #999; font-weight: 600;">{-# LANGUAGE CPP, TupleSections, ScopedTypeVariables #-}</span></span>
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<pre style="margin: 0;"> <span id="LC9" class="line" lang="haskell"><span class="cp" style="color: #999; font-weight: 600;">{-# LANGUAGE FlexibleContexts #-}</span></span>
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<pre style="margin: 0;">-<span id="LC10" class="line" lang="haskell"><span class="cp" style="color: #999; font-weight: 600;">{-# LANGUAGE TypeFamilies #-}</span></span>
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<pre style="margin: 0;">+<span id="LC10" class="line" lang="haskell"><span class="cp" style="color: #999; font-weight: 600;">{-# LANGUAGE TypeFamilies, DataKinds, TypeApplications #-}</span></span>
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<pre style="margin: 0;">+<span id="LC11" class="line" lang="haskell"><span class="cp" style="color: #999; font-weight: 600;">{-# LANGUAGE UndecidableInstances #-}</span> <span class="c1" style="color: #998; font-style: italic;">-- Wrinkle in Note [Trees That Grow]</span></span>
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<pre style="margin: 0;">+<span id="LC12" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- in module GHC.Hs.Extension</span></span>
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<pre style="margin: 0;"> <span id="LC13" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC14" class="line" lang="haskell"><span class="cp" style="color: #999; font-weight: 600;">{-# OPTIONS_GHC -Wno-incomplete-uni-patterns #-}</span></span>
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<pre style="margin: 0;"> <span id="LC15" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC16" class="line" lang="haskell"><span class="cd">-- | Typecheck an expression</span></span>
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<pre style="margin: 0;"> <span id="LC17" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">module</span> <span class="nn" style="color: #555;">GHC.Tc.Gen.Expr</span></span>
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<pre style="margin: 0;"> <span id="LC18" class="line" lang="haskell"> <span class="p">(</span> <span class="nf" style="color: #900; font-weight: 600;">tcPolyExpr</span></span>
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<pre style="margin: 0;">-<span id="LC17" class="line" lang="haskell"> <span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">tc<span class="idiff left">MonoExpr</span></span><span class="p"><span class="idiff">,</span></span><span class="idiff"> </span><span class="nf" style="color: #900; font-weight: 600;"><span class="idiff right">tcMonoExprNC</span></span></span>
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18
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<pre style="margin: 0;">-<span id="LC18" class="line" lang="haskell"> <span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">tcInferRho</span><span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">tcInferRhoNC</span><span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">tcInferApp<span class="idiff left right">Head</span></span></span>
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<pre style="margin: 0;">+<span id="LC19" class="line" lang="haskell"> <span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">tc<span class="idiff left">LExpr</span></span><span class="p"><span class="idiff">,</span></span><span class="idiff"> </span><span class="nf" style="color: #900; font-weight: 600;"><span class="idiff">tcLExprNC</span></span><span class="p"><span class="idiff">,</span></span><span class="idiff"> </span><span class="nf" style="color: #900; font-weight: 600;"><span class="idiff right">tcExpr</span></span></span>
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<pre style="margin: 0;">+<span id="LC20" class="line" lang="haskell"> <span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">tcInferRho</span><span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">tcInferRhoNC</span><span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">tcInferApp</span></span>
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<pre style="margin: 0;"> <span id="LC21" class="line" lang="haskell"> <span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">tcSyntaxOp</span><span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">tcSyntaxOpGen</span></span>
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<pre style="margin: 0;"> <span id="LC22" class="line" lang="haskell"> <span class="p">,</span> <span class="kt" style="color: #458; font-weight: 600;">SyntaxOpType</span><span class="p">(</span><span class="o" style="font-weight: 600;">..</span><span class="p">)</span></span>
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<pre style="margin: 0;"> <span id="LC23" class="line" lang="haskell"> <span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">synKnownType</span></span>
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<pre style="margin: 0;"> <span id="LC24" class="line" lang="haskell"> <span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">tcCheckId</span></span>
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<pre style="margin: 0;">-<span id="LC23" class="line" lang="haskell"> <span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">addExprErrCtxt</span></span>
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<pre style="margin: 0;"> <span id="LC25" class="line" lang="haskell"> <span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">addAmbiguousNameErr</span></span>
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<pre style="margin: 0;"> <span id="LC26" class="line" lang="haskell"> <span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">getFixedTyVars</span></span>
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<pre style="margin: 0;"> <span id="LC27" class="line" lang="haskell"> <span class="p">)</span></span>
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<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -43,7 +44,7 @@ import GHC.Tc.Utils.Instantiate</td>
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<pre style="margin: 0;"> <span id="LC44" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Tc.Gen.Bind</span> <span class="p">(</span> <span class="nf" style="color: #900; font-weight: 600;">chooseInferredQuantifiers</span><span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">tcLocalBinds</span> <span class="p">)</span></span>
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<pre style="margin: 0;"> <span id="LC45" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Tc.Gen.Sig</span> <span class="p">(</span> <span class="nf" style="color: #900; font-weight: 600;">tcUserTypeSig</span><span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">tcInstSig</span> <span class="p">)</span></span>
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<pre style="margin: 0;"> <span id="LC46" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Tc.Solver</span> <span class="p">(</span> <span class="nf" style="color: #900; font-weight: 600;">simplifyInfer</span><span class="p">,</span> <span class="kt" style="color: #458; font-weight: 600;">InferMode</span><span class="p">(</span><span class="o" style="font-weight: 600;">..</span><span class="p">)</span> <span class="p">)</span></span>
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<pre style="margin: 0;">-<span id="LC46" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Tc.Instance.Family</span> <span class="p">(</span> <span class="nf" style="color: #900; font-weight: 600;">tcGetFamInstEnvs</span><span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">tcLookupDataFamInst</span> <span class="p">)</span></span>
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<pre style="margin: 0;">+<span id="LC47" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Tc.Instance.Family</span> <span class="p">(</span> <span class="nf" style="color: #900; font-weight: 600;">tcGetFamInstEnvs</span><span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">tcLookupDataFamInst</span><span class="p"><span class="idiff left">,</span></span><span class="idiff"> </span><span class="nf" style="color: #900; font-weight: 600;"><span class="idiff right">tcLookupDataFamInst_maybe</span></span> <span class="p">)</span></span>
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<pre style="margin: 0;"> <span id="LC48" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Core.FamInstEnv</span> <span class="p">(</span> <span class="kt" style="color: #458; font-weight: 600;">FamInstEnvs</span> <span class="p">)</span></span>
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<pre style="margin: 0;"> <span id="LC49" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Rename.Env</span> <span class="p">(</span> <span class="nf" style="color: #900; font-weight: 600;">addUsedGRE</span> <span class="p">)</span></span>
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<pre style="margin: 0;"> <span id="LC50" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Rename.Utils</span> <span class="p">(</span> <span class="nf" style="color: #900; font-weight: 600;">addNameClashErrRn</span><span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">unknownSubordinateErr</span> <span class="p">)</span></span>
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<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -73,7 +74,6 @@ import GHC.Core.Type</td>
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<pre style="margin: 0;"> <span id="LC74" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Tc.Types.Evidence</span></span>
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<pre style="margin: 0;"> <span id="LC75" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Types.Var.Set</span></span>
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<pre style="margin: 0;"> <span id="LC76" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">TysWiredIn</span></span>
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<pre style="margin: 0;">-<span id="LC76" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">TysPrim</span><span class="p">(</span> <span class="n" style="color: #333;">intPrimTy</span> <span class="p">)</span></span>
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<pre style="margin: 0;"> <span id="LC77" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">PrimOp</span><span class="p">(</span> <span class="n" style="color: #333;">tagToEnumKey</span> <span class="p">)</span></span>
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<pre style="margin: 0;"> <span id="LC78" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">PrelNames</span></span>
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<pre style="margin: 0;"> <span id="LC79" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Driver.Session</span></span>
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<td class="diff-line-num unfold js-unfold new_line" data-linenumber="104" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>
<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -104,7 +104,7 @@ import qualified Data.Set as Set</td>
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<pre style="margin: 0;"> <span id="LC104" class="line" lang="haskell"><span class="n" style="color: #333;">tcPolyExpr</span><span class="p">,</span> <span class="n" style="color: #333;">tcPolyExprNC</span></span>
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<pre style="margin: 0;"> <span id="LC105" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">LHsExpr</span> <span class="kt" style="color: #458; font-weight: 600;">GhcRn</span> <span class="c1" style="color: #998; font-style: italic;">-- Expression to type check</span></span>
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<pre style="margin: 0;"> <span id="LC106" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TcSigmaType</span> <span class="c1" style="color: #998; font-style: italic;">-- Expected type (could be a polytype)</span></span>
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<pre style="margin: 0;">-<span id="LC107" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TcM</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">LHsExpr</span> <span class="kt" style="color: #458; font-weight: 600;">GhcTc<span class="idiff left right">Id</span></span><span class="p">)</span> <span class="c1" style="color: #998; font-style: italic;">-- Generalised expr with expected type</span></span>
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<pre style="margin: 0;">+<span id="LC107" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TcM</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">LHsExpr</span> <span class="kt" style="color: #458; font-weight: 600;">GhcTc</span><span class="p">)</span> <span class="c1" style="color: #998; font-style: italic;">-- Generalised expr with expected type</span></span>
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<pre style="margin: 0;"> <span id="LC108" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC109" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- tcPolyExpr is a convenient place (frequent but not too frequent)</span></span>
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<pre style="margin: 0;"> <span id="LC110" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- place to add context information.</span></span>
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<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -116,9 +116,9 @@ tcPolyExprNC expr res_ty = tc_poly_expr_nc expr (mkCheckExpType res_ty)</td>
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<pre style="margin: 0;"> <span id="LC116" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC117" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- these versions take an ExpType</span></span>
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<pre style="margin: 0;"> <span id="LC118" class="line" lang="haskell"><span class="n" style="color: #333;">tc_poly_expr</span><span class="p">,</span> <span class="n" style="color: #333;">tc_poly_expr_nc</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">LHsExpr</span> <span class="kt" style="color: #458; font-weight: 600;">GhcRn</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">ExpSigmaType</span></span>
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<pre style="margin: 0;">-<span id="LC119" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TcM</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">LHsExpr</span> <span class="kt" style="color: #458; font-weight: 600;">GhcTc<span class="idiff left right">Id</span></span><span class="p">)</span></span>
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<pre style="margin: 0;">+<span id="LC119" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TcM</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">LHsExpr</span> <span class="kt" style="color: #458; font-weight: 600;">GhcTc</span><span class="p">)</span></span>
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<pre style="margin: 0;"> <span id="LC120" class="line" lang="haskell"><span class="n" style="color: #333;">tc_poly_expr</span> <span class="n" style="color: #333;">expr</span> <span class="n" style="color: #333;">res_ty</span></span>
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<pre style="margin: 0;">-<span id="LC121" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">addE<span class="idiff left">xprErrCtxt</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff right">expr</span></span> <span class="o" style="font-weight: 600;">$</span></span>
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<pre style="margin: 0;">+<span id="LC121" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">addE<span class="idiff left">rrCtxt</span></span><span class="idiff"> </span><span class="p"><span class="idiff">(</span></span><span class="n" style="color: #333;"><span class="idiff">exprCtxt</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">expr</span></span><span class="p"><span class="idiff right">)</span></span> <span class="o" style="font-weight: 600;">$</span></span>
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<pre style="margin: 0;"> <span id="LC122" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">do</span> <span class="p">{</span> <span class="n" style="color: #333;">traceTc</span> <span class="s" style="color: #d14;">"tcPolyExpr"</span> <span class="p">(</span><span class="n" style="color: #333;">ppr</span> <span class="n" style="color: #333;">res_ty</span><span class="p">);</span> <span class="n" style="color: #333;">tc_poly_expr_nc</span> <span class="n" style="color: #333;">expr</span> <span class="n" style="color: #333;">res_ty</span> <span class="p">}</span></span>
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<pre style="margin: 0;"> <span id="LC123" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC124" class="line" lang="haskell"><span class="n" style="color: #333;">tc_poly_expr_nc</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">L</span> <span class="n" style="color: #333;">loc</span> <span class="n" style="color: #333;">expr</span><span class="p">)</span> <span class="n" style="color: #333;">res_ty</span></span>
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<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -130,31 +130,22 @@ tc_poly_expr_nc (L loc expr) res_ty</td>
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<pre style="margin: 0;"> <span id="LC130" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">return</span> <span class="o" style="font-weight: 600;">$</span> <span class="kt" style="color: #458; font-weight: 600;">L</span> <span class="n" style="color: #333;">loc</span> <span class="p">(</span><span class="n" style="color: #333;">mkHsWrap</span> <span class="n" style="color: #333;">wrap</span> <span class="n" style="color: #333;">expr'</span><span class="p">)</span> <span class="p">}</span></span>
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<pre style="margin: 0;"> <span id="LC131" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC132" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">---------------</span></span>
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<pre style="margin: 0;">-<span id="LC133" class="line" lang="haskell"><span class="n" style="color: #333;">tcMonoExpr</span><span class="p">,</span> <span class="n" style="color: #333;">tcMonoExprNC</span></span>
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<pre style="margin: 0;">-<span id="LC134" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">LHsExpr</span> <span class="kt" style="color: #458; font-weight: 600;">GhcRn</span> <span class="c1" style="color: #998; font-style: italic;">-- Expression to type check</span></span>
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<pre style="margin: 0;">-<span id="LC135" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">ExpRhoType</span> <span class="c1" style="color: #998; font-style: italic;">-- Expected type</span></span>
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<pre style="margin: 0;">-<span id="LC136" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- Definitely no foralls at the top</span></span>
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<pre style="margin: 0;">-<span id="LC137" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TcM</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">LHsExpr</span> <span class="kt" style="color: #458; font-weight: 600;">GhcTcId</span><span class="p">)</span></span>
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<pre style="margin: 0;">-<span id="LC138" class="line" lang="haskell"></span>
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<pre style="margin: 0;">-<span id="LC139" class="line" lang="haskell"><span class="n" style="color: #333;">tcMonoExpr</span> <span class="n" style="color: #333;">expr</span> <span class="n" style="color: #333;">res_ty</span></span>
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<pre style="margin: 0;">-<span id="LC140" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">addErrCtxt</span> <span class="p">(</span><span class="n" style="color: #333;">exprCtxt</span> <span class="n" style="color: #333;">expr</span><span class="p">)</span> <span class="o" style="font-weight: 600;">$</span></span>
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<pre style="margin: 0;">-<span id="LC141" class="line" lang="haskell"> <span class="n" style="color: #333;">tcMonoExprNC</span> <span class="n" style="color: #333;">expr</span> <span class="n" style="color: #333;">res_ty</span></span>
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<pre style="margin: 0;">-<span id="LC142" class="line" lang="haskell"></span>
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<pre style="margin: 0;">-<span id="LC143" class="line" lang="haskell"><span class="n" style="color: #333;">tcMonoExprNC</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">L</span> <span class="n" style="color: #333;">loc</span> <span class="n" style="color: #333;">expr</span><span class="p">)</span> <span class="n" style="color: #333;">res_ty</span></span>
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<pre style="margin: 0;">-<span id="LC144" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">setSrcSpan</span> <span class="n" style="color: #333;">loc</span> <span class="o" style="font-weight: 600;">$</span></span>
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<pre style="margin: 0;">-<span id="LC145" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">do</span> <span class="p">{</span> <span class="n" style="color: #333;">expr'</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">tcExpr</span> <span class="n" style="color: #333;">expr</span> <span class="n" style="color: #333;">res_ty</span></span>
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<pre style="margin: 0;">-<span id="LC146" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">return</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">L</span> <span class="n" style="color: #333;">loc</span> <span class="n" style="color: #333;">expr'</span><span class="p">)</span> <span class="p">}</span></span>
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<pre style="margin: 0;">-<span id="LC147" class="line" lang="haskell"></span>
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<pre style="margin: 0;">-<span id="LC148" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">---------------</span></span>
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<pre style="margin: 0;">-<span id="LC149" class="line" lang="haskell"><span class="n" style="color: #333;">tcInferRho</span><span class="p">,</span> <span class="n" style="color: #333;">tcInferRhoNC</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">LHsExpr</span> <span class="kt" style="color: #458; font-weight: 600;">GhcRn</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TcM</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">LHsExpr</span> <span class="kt" style="color: #458; font-weight: 600;">GhcTcId</span><span class="p">,</span> <span class="kt" style="color: #458; font-weight: 600;">TcRhoType</span><span class="p">)</span></span>
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<pre style="margin: 0;">-<span id="LC150" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- Infer a *rho*-type. The return type is always (shallowly) instantiated.</span></span>
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<pre style="margin: 0;">-<span id="LC151" class="line" lang="haskell"><span class="n" style="color: #333;">tcInferRho</span> <span class="n" style="color: #333;">expr</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">addErrCtxt</span> <span class="p">(</span><span class="n" style="color: #333;">exprCtxt</span> <span class="n" style="color: #333;">expr</span><span class="p">)</span> <span class="p">(</span><span class="n" style="color: #333;">tcInferRhoNC</span> <span class="n" style="color: #333;">expr</span><span class="p">)</span></span>
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<pre style="margin: 0;">+<span id="LC133" class="line" lang="haskell"><span class="n" style="color: #333;">tcInferRho</span><span class="p">,</span> <span class="n" style="color: #333;">tcInferRhoNC</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">LHsExpr</span> <span class="kt" style="color: #458; font-weight: 600;">GhcRn</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TcM</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">LHsExpr</span> <span class="kt" style="color: #458; font-weight: 600;">GhcTc</span><span class="p">,</span> <span class="kt" style="color: #458; font-weight: 600;">TcRhoType</span><span class="p">)</span></span>
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<pre style="margin: 0;">+<span id="LC134" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- Infer a *rho*-type. The return type is always instantiated.</span></span>
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<pre style="margin: 0;">+<span id="LC135" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- Don't wrap in "In the expression Wrap in a context iff non-atom</span></span>
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<pre style="margin: 0;">+<span id="LC136" class="line" lang="haskell"><span class="n" style="color: #333;">tcInferRho</span> <span class="n" style="color: #333;">le</span><span class="o" style="font-weight: 600;">@</span><span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">L</span> <span class="kr" style="font-weight: 600;">_</span> <span class="n" style="color: #333;">e</span><span class="p">)</span></span>
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<pre style="margin: 0;">+<span id="LC137" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">|</span> <span class="n" style="color: #333;">isAtomicHsExpr</span> <span class="n" style="color: #333;">e</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">tcInferRhoNC</span> <span class="n" style="color: #333;">le</span></span>
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<pre style="margin: 0;">+<span id="LC138" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">|</span> <span class="n" style="color: #333;">otherwise</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">addErrCtxt</span> <span class="p">(</span><span class="n" style="color: #333;">exprCtxt</span> <span class="n" style="color: #333;">le</span><span class="p">)</span> <span class="p">(</span><span class="n" style="color: #333;">tcInferRhoNC</span> <span class="n" style="color: #333;">le</span><span class="p">)</span></span>
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139
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<pre style="margin: 0;"> <span id="LC139" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC140" class="line" lang="haskell"><span class="n" style="color: #333;">tcInferRhoNC</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">L</span> <span class="n" style="color: #333;">loc</span> <span class="n" style="color: #333;">expr</span><span class="p">)</span></span>
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154
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141
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<pre style="margin: 0;"> <span id="LC141" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">setSrcSpan</span> <span class="n" style="color: #333;">loc</span> <span class="o" style="font-weight: 600;">$</span></span>
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155
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<pre style="margin: 0;">-<span id="LC155" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">do</span> <span class="p">{</span> <span class="p">(</span><span class="n" style="color: #333;">expr'</span><span class="p">,</span> <span class="n" style="color: #333;">rho</span><span class="p">)</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">tcInfer<span class="idiff left right">Inst</span></span> <span class="p">(</span><span class="n" style="color: #333;">tcExpr</span> <span class="n" style="color: #333;">expr</span><span class="p">)</span></span>
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142
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<pre style="margin: 0;">+<span id="LC142" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">do</span> <span class="p">{</span> <span class="p">(</span><span class="n" style="color: #333;">expr'</span><span class="p">,</span> <span class="n" style="color: #333;">rho</span><span class="p">)</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">tcInfer</span> <span class="p">(</span><span class="n" style="color: #333;">tcExpr</span> <span class="n" style="color: #333;">expr</span><span class="p">)</span></span>
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156
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<pre style="margin: 0;"> <span id="LC143" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">return</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">L</span> <span class="n" style="color: #333;">loc</span> <span class="n" style="color: #333;">expr'</span><span class="p">,</span> <span class="n" style="color: #333;">rho</span><span class="p">)</span> <span class="p">}</span></span>
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<pre style="margin: 0;"> <span id="LC144" class="line" lang="haskell"></span>
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<pre style="margin: 0;">+<span id="LC145" class="line" lang="haskell"><span class="n" style="color: #333;">exprCtxt</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">LHsExpr</span> <span class="kt" style="color: #458; font-weight: 600;">GhcRn</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">SDoc</span></span>
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<pre style="margin: 0;">+<span id="LC146" class="line" lang="haskell"><span class="n" style="color: #333;">exprCtxt</span> <span class="n" style="color: #333;">expr</span></span>
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<pre style="margin: 0;">+<span id="LC147" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">hang</span> <span class="p">(</span><span class="n" style="color: #333;">text</span> <span class="s" style="color: #d14;">"In the expression:"</span><span class="p">)</span> <span class="mi" style="color: #099;">2</span> <span class="p">(</span><span class="n" style="color: #333;">ppr</span> <span class="p">(</span><span class="n" style="color: #333;">stripParensHsExpr</span> <span class="n" style="color: #333;">expr</span><span class="p">))</span></span>
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<pre style="margin: 0;">+<span id="LC148" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC149" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">{-</span></span>
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<pre style="margin: 0;"> <span id="LC150" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">************************************************************************</span></span>
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<pre style="margin: 0;"> <span id="LC151" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">* *</span></span>
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<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -165,29 +156,38 @@ tcInferRhoNC (L loc expr)</td>
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<pre style="margin: 0;"> <span id="LC156" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">NB: The res_ty is always deeply skolemised.</span></span>
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<pre style="margin: 0;"> <span id="LC157" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">-}</span></span>
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<pre style="margin: 0;"> <span id="LC158" class="line" lang="haskell"></span>
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<pre style="margin: 0;">-<span id="LC168" class="line" lang="haskell"><span class="n" style="color: #333;">tcExpr</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">HsExpr</span> <span class="kt" style="color: #458; font-weight: 600;">GhcRn</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">ExpRhoType</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TcM</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">HsExpr</span> <span class="kt" style="color: #458; font-weight: 600;">GhcTcId</span><span class="p">)</span></span>
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<pre style="margin: 0;">+<span id="LC159" class="line" lang="haskell"><span class="n" style="color: #333;">tcLExpr</span><span class="p">,</span> <span class="n" style="color: #333;">tcLExprNC</span></span>
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<pre style="margin: 0;">+<span id="LC160" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">LHsExpr</span> <span class="kt" style="color: #458; font-weight: 600;">GhcRn</span> <span class="c1" style="color: #998; font-style: italic;">-- Expression to type check</span></span>
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<pre style="margin: 0;">+<span id="LC161" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">ExpRhoType</span> <span class="c1" style="color: #998; font-style: italic;">-- Expected type</span></span>
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<pre style="margin: 0;">+<span id="LC162" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- Definitely no foralls at the top</span></span>
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<pre style="margin: 0;">+<span id="LC163" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TcM</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">LHsExpr</span> <span class="kt" style="color: #458; font-weight: 600;">GhcTc</span><span class="p">)</span></span>
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<pre style="margin: 0;">+<span id="LC164" class="line" lang="haskell"></span>
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<pre style="margin: 0;">+<span id="LC165" class="line" lang="haskell"><span class="n" style="color: #333;">tcLExpr</span> <span class="n" style="color: #333;">expr</span> <span class="n" style="color: #333;">res_ty</span></span>
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<pre style="margin: 0;">+<span id="LC166" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">addErrCtxt</span> <span class="p">(</span><span class="n" style="color: #333;">exprCtxt</span> <span class="n" style="color: #333;">expr</span><span class="p">)</span> <span class="o" style="font-weight: 600;">$</span></span>
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<pre style="margin: 0;">+<span id="LC167" class="line" lang="haskell"> <span class="n" style="color: #333;">tcLExprNC</span> <span class="n" style="color: #333;">expr</span> <span class="n" style="color: #333;">res_ty</span></span>
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<pre style="margin: 0;">+<span id="LC169" class="line" lang="haskell"><span class="n" style="color: #333;">tcLExprNC</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">L</span> <span class="n" style="color: #333;">loc</span> <span class="n" style="color: #333;">expr</span><span class="p">)</span> <span class="n" style="color: #333;">res_ty</span></span>
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<pre style="margin: 0;">+<span id="LC170" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">setSrcSpan</span> <span class="n" style="color: #333;">loc</span> <span class="o" style="font-weight: 600;">$</span></span>
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<pre style="margin: 0;">+<span id="LC171" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">do</span> <span class="p">{</span> <span class="n" style="color: #333;">expr'</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">tcExpr</span> <span class="n" style="color: #333;">expr</span> <span class="n" style="color: #333;">res_ty</span></span>
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<pre style="margin: 0;">+<span id="LC172" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">return</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">L</span> <span class="n" style="color: #333;">loc</span> <span class="n" style="color: #333;">expr'</span><span class="p">)</span> <span class="p">}</span></span>
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<pre style="margin: 0;">+<span id="LC173" class="line" lang="haskell"></span>
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<pre style="margin: 0;">+<span id="LC174" class="line" lang="haskell"><span class="n" style="color: #333;">tcExpr</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">HsExpr</span> <span class="kt" style="color: #458; font-weight: 600;">GhcRn</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">ExpRhoType</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TcM</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">HsExpr</span> <span class="kt" style="color: #458; font-weight: 600;">GhcTc</span><span class="p">)</span></span>
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175
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<pre style="margin: 0;"> <span id="LC175" class="line" lang="haskell"><span class="n" style="color: #333;">tcExpr</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">HsVar</span> <span class="kr" style="font-weight: 600;">_</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">L</span> <span class="kr" style="font-weight: 600;">_</span> <span class="n" style="color: #333;">name</span><span class="p">))</span> <span class="n" style="color: #333;">res_ty</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">tcCheckId</span> <span class="n" style="color: #333;">name</span> <span class="n" style="color: #333;">res_ty</span></span>
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<pre style="margin: 0;"> <span id="LC176" class="line" lang="haskell"><span class="n" style="color: #333;">tcExpr</span> <span class="n" style="color: #333;">e</span><span class="o" style="font-weight: 600;">@</span><span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">HsUnboundVar</span> <span class="kr" style="font-weight: 600;">_</span> <span class="n" style="color: #333;">uv</span><span class="p">)</span> <span class="n" style="color: #333;">res_ty</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">tcUnboundId</span> <span class="n" style="color: #333;">e</span> <span class="n" style="color: #333;">uv</span> <span class="n" style="color: #333;">res_ty</span></span>
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<pre style="margin: 0;"> <span id="LC177" class="line" lang="haskell"></span>
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<pre style="margin: 0;">-<span id="LC172" class="line" lang="haskell"><span class="n" style="color: #333;">tcExpr</span> <span class="n" style="color: #333;">e</span><span class="o" style="font-weight: 600;">@</span><span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">HsApp</span> <span class="p">{})</span> <span class="n" style="color: #333;">res_ty</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">tcApp<span class="idiff left right">1</span></span> <span class="n" style="color: #333;">e</span> <span class="n" style="color: #333;">res_ty</span></span>
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<pre style="margin: 0;">-<span id="LC173" class="line" lang="haskell"><span class="n" style="color: #333;">tcExpr</span> <span class="n" style="color: #333;">e</span><span class="o" style="font-weight: 600;">@</span><span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">HsAppType</span> <span class="p">{})</span> <span class="n" style="color: #333;">res_ty</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">tcApp<span class="idiff left right">1</span></span> <span class="n" style="color: #333;">e</span> <span class="n" style="color: #333;">res_ty</span></span>
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<pre style="margin: 0;">+<span id="LC178" class="line" lang="haskell"><span class="n" style="color: #333;">tcExpr</span> <span class="n" style="color: #333;">e</span><span class="o" style="font-weight: 600;">@</span><span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">HsApp</span> <span class="p">{})</span> <span class="n" style="color: #333;">res_ty</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">tcApp</span> <span class="n" style="color: #333;">e</span> <span class="n" style="color: #333;">res_ty</span></span>
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<pre style="margin: 0;">+<span id="LC179" class="line" lang="haskell"><span class="n" style="color: #333;">tcExpr</span> <span class="n" style="color: #333;">e</span><span class="o" style="font-weight: 600;">@</span><span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">HsAppType</span> <span class="p">{})</span> <span class="n" style="color: #333;">res_ty</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">tcApp</span> <span class="n" style="color: #333;">e</span> <span class="n" style="color: #333;">res_ty</span></span>
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<pre style="margin: 0;"> <span id="LC180" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC181" class="line" lang="haskell"><span class="n" style="color: #333;">tcExpr</span> <span class="n" style="color: #333;">e</span><span class="o" style="font-weight: 600;">@</span><span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">HsLit</span> <span class="n" style="color: #333;">x</span> <span class="n" style="color: #333;">lit</span><span class="p">)</span> <span class="n" style="color: #333;">res_ty</span></span>
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182
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<pre style="margin: 0;"> <span id="LC182" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">do</span> <span class="p">{</span> <span class="kr" style="font-weight: 600;">let</span> <span class="n" style="color: #333;">lit_ty</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">hsLitType</span> <span class="n" style="color: #333;">lit</span></span>
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<pre style="margin: 0;"> <span id="LC183" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">tcWrapResult</span> <span class="n" style="color: #333;">e</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">HsLit</span> <span class="n" style="color: #333;">x</span> <span class="p">(</span><span class="n" style="color: #333;">convertLit</span> <span class="n" style="color: #333;">lit</span><span class="p">))</span> <span class="n" style="color: #333;">lit_ty</span> <span class="n" style="color: #333;">res_ty</span> <span class="p">}</span></span>
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<pre style="margin: 0;"> <span id="LC184" class="line" lang="haskell"></span>
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<pre style="margin: 0;">-<span id="LC179" class="line" lang="haskell"><span class="n" style="color: #333;">tcExpr</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">HsPar</span> <span class="n" style="color: #333;">x</span> <span class="n" style="color: #333;">expr</span><span class="p">)</span> <span class="n" style="color: #333;">res_ty</span> <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">do</span> <span class="p">{</span> <span class="n" style="color: #333;">expr'</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">tc<span class="idiff left right">Mono</span>ExprNC</span> <span class="n" style="color: #333;">expr</span> <span class="n" style="color: #333;">res_ty</span></span>
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<pre style="margin: 0;">+<span id="LC185" class="line" lang="haskell"><span class="n" style="color: #333;">tcExpr</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">HsPar</span> <span class="n" style="color: #333;">x</span> <span class="n" style="color: #333;">expr</span><span class="p">)</span> <span class="n" style="color: #333;">res_ty</span> <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">do</span> <span class="p">{</span> <span class="n" style="color: #333;">expr'</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">tc<span class="idiff left right">L</span>ExprNC</span> <span class="n" style="color: #333;">expr</span> <span class="n" style="color: #333;">res_ty</span></span>
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<pre style="margin: 0;"> <span id="LC186" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">return</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">HsPar</span> <span class="n" style="color: #333;">x</span> <span class="n" style="color: #333;">expr'</span><span class="p">)</span> <span class="p">}</span></span>
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187
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<pre style="margin: 0;"> <span id="LC187" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC188" class="line" lang="haskell"><span class="n" style="color: #333;">tcExpr</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">HsPragE</span> <span class="n" style="color: #333;">x</span> <span class="n" style="color: #333;">prag</span> <span class="n" style="color: #333;">expr</span><span class="p">)</span> <span class="n" style="color: #333;">res_ty</span></span>
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<pre style="margin: 0;">-<span id="LC183" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">do</span> <span class="p">{</span> <span class="n" style="color: #333;">expr'</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">tcMonoExpr</span> <span class="n" style="color: #333;">expr</span> <span class="n" style="color: #333;">res_ty</span></span>
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184
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<pre style="margin: 0;">-<span id="LC184" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">return</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">HsPragE</span> <span class="n" style="color: #333;">x</span> <span class="p">(</span><span class="n" style="color: #333;">tc_prag</span> <span class="n" style="color: #333;">prag</span><span class="p">)</span> <span class="n" style="color: #333;">expr'</span><span class="p">)</span> <span class="p">}</span></span>
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<pre style="margin: 0;">-<span id="LC185" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">where</span></span>
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<pre style="margin: 0;">-<span id="LC186" class="line" lang="haskell"> <span class="n" style="color: #333;">tc_prag</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">HsPragE</span> <span class="kt" style="color: #458; font-weight: 600;">GhcRn</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">HsPragE</span> <span class="kt" style="color: #458; font-weight: 600;">GhcTc</span></span>
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187
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<pre style="margin: 0;">-<span id="LC187" class="line" lang="haskell"> <span class="n" style="color: #333;">tc_prag</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">HsPragSCC</span> <span class="n" style="color: #333;">x1</span> <span class="n" style="color: #333;">src</span> <span class="n" style="color: #333;">ann</span><span class="p">)</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">HsPragSCC</span> <span class="n" style="color: #333;">x1</span> <span class="n" style="color: #333;">src</span> <span class="n" style="color: #333;">ann</span></span>
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188
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<pre style="margin: 0;">-<span id="LC188" class="line" lang="haskell"> <span class="n" style="color: #333;">tc_prag</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">HsPragCore</span> <span class="n" style="color: #333;">x1</span> <span class="n" style="color: #333;">src</span> <span class="n" style="color: #333;">lbl</span><span class="p">)</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">HsPragCore</span> <span class="n" style="color: #333;">x1</span> <span class="n" style="color: #333;">src</span> <span class="n" style="color: #333;">lbl</span></span>
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189
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<pre style="margin: 0;">-<span id="LC189" class="line" lang="haskell"> <span class="n" style="color: #333;">tc_prag</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">HsPragTick</span> <span class="n" style="color: #333;">x1</span> <span class="n" style="color: #333;">src</span> <span class="n" style="color: #333;">info</span> <span class="n" style="color: #333;">srcInfo</span><span class="p">)</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">HsPragTick</span> <span class="n" style="color: #333;">x1</span> <span class="n" style="color: #333;">src</span> <span class="n" style="color: #333;">info</span> <span class="n" style="color: #333;">srcInfo</span></span>
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190
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<pre style="margin: 0;">-<span id="LC190" class="line" lang="haskell"> <span class="n" style="color: #333;">tc_prag</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">XHsPragE</span> <span class="n" style="color: #333;">x</span><span class="p">)</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">noExtCon</span> <span class="n" style="color: #333;">x</span></span>
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189
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<pre style="margin: 0;">+<span id="LC189" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">do</span> <span class="p">{</span> <span class="n" style="color: #333;">expr'</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">tcLExpr</span> <span class="n" style="color: #333;">expr</span> <span class="n" style="color: #333;">res_ty</span></span>
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<pre style="margin: 0;">+<span id="LC190" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">return</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">HsPragE</span> <span class="n" style="color: #333;">x</span> <span class="p">(</span><span class="n" style="color: #333;">tcExprPrag</span> <span class="n" style="color: #333;">prag</span><span class="p">)</span> <span class="n" style="color: #333;">expr'</span><span class="p">)</span> <span class="p">}</span></span>
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<pre style="margin: 0;"> <span id="LC191" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC192" class="line" lang="haskell"><span class="n" style="color: #333;">tcExpr</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">HsOverLit</span> <span class="n" style="color: #333;">x</span> <span class="n" style="color: #333;">lit</span><span class="p">)</span> <span class="n" style="color: #333;">res_ty</span></span>
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<pre style="margin: 0;"> <span id="LC193" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">do</span> <span class="p">{</span> <span class="n" style="color: #333;">lit'</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">newOverloadedLit</span> <span class="n" style="color: #333;">lit</span> <span class="n" style="color: #333;">res_ty</span></span>
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<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -197,7 +197,7 @@ tcExpr (NegApp x expr neg_expr) res_ty</td>
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<pre style="margin: 0;"> <span id="LC197" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">do</span> <span class="p">{</span> <span class="p">(</span><span class="n" style="color: #333;">expr'</span><span class="p">,</span> <span class="n" style="color: #333;">neg_expr'</span><span class="p">)</span></span>
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<pre style="margin: 0;"> <span id="LC198" class="line" lang="haskell"> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">tcSyntaxOp</span> <span class="kt" style="color: #458; font-weight: 600;">NegateOrigin</span> <span class="n" style="color: #333;">neg_expr</span> <span class="p">[</span><span class="kt" style="color: #458; font-weight: 600;">SynAny</span><span class="p">]</span> <span class="n" style="color: #333;">res_ty</span> <span class="o" style="font-weight: 600;">$</span></span>
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199
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199
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<pre style="margin: 0;"> <span id="LC199" class="line" lang="haskell"> <span class="nf" style="color: #900; font-weight: 600;">\</span><span class="p">[</span><span class="n" style="color: #333;">arg_ty</span><span class="p">]</span> <span class="o" style="font-weight: 600;">-></span></span>
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<pre style="margin: 0;">-<span id="LC200" class="line" lang="haskell"> <span class="n" style="color: #333;">tc<span class="idiff left right">Mono</span>Expr</span> <span class="n" style="color: #333;">expr</span> <span class="p">(</span><span class="n" style="color: #333;">mkCheckExpType</span> <span class="n" style="color: #333;">arg_ty</span><span class="p">)</span></span>
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<pre style="margin: 0;">+<span id="LC200" class="line" lang="haskell"> <span class="n" style="color: #333;">tc<span class="idiff left right">L</span>Expr</span> <span class="n" style="color: #333;">expr</span> <span class="p">(</span><span class="n" style="color: #333;">mkCheckExpType</span> <span class="n" style="color: #333;">arg_ty</span><span class="p">)</span></span>
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201
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201
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<pre style="margin: 0;"> <span id="LC201" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">return</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">NegApp</span> <span class="n" style="color: #333;">x</span> <span class="n" style="color: #333;">expr'</span> <span class="n" style="color: #333;">neg_expr'</span><span class="p">)</span> <span class="p">}</span></span>
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202
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<pre style="margin: 0;"> <span id="LC202" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC203" class="line" lang="haskell"><span class="n" style="color: #333;">tcExpr</span> <span class="n" style="color: #333;">e</span><span class="o" style="font-weight: 600;">@</span><span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">HsIPVar</span> <span class="kr" style="font-weight: 600;">_</span> <span class="n" style="color: #333;">x</span><span class="p">)</span> <span class="n" style="color: #333;">res_ty</span></span>
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<td class="diff-line-num unfold js-unfold old_line" data-linenumber="332" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>
<td class="diff-line-num unfold js-unfold new_line" data-linenumber="332" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>
<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -332,7 +332,7 @@ tcExpr expr@(OpApp fix arg1 op arg2) res_ty</td>
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332
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332
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<pre style="margin: 0;"> <span id="LC332" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">|</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">L</span> <span class="n" style="color: #333;">loc</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">HsVar</span> <span class="kr" style="font-weight: 600;">_</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">L</span> <span class="n" style="color: #333;">lv</span> <span class="n" style="color: #333;">op_name</span><span class="p">)))</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">op</span></span>
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<pre style="margin: 0;"> <span id="LC333" class="line" lang="haskell"> <span class="p">,</span> <span class="n" style="color: #333;">op_name</span> <span class="p">`</span><span class="n" style="color: #333;">hasKey</span><span class="p">`</span> <span class="n" style="color: #333;">dollarIdKey</span> <span class="c1" style="color: #998; font-style: italic;">-- Note [Typing rule for ($)]</span></span>
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<pre style="margin: 0;"> <span id="LC334" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">do</span> <span class="p">{</span> <span class="n" style="color: #333;">traceTc</span> <span class="s" style="color: #d14;">"Application rule"</span> <span class="p">(</span><span class="n" style="color: #333;">ppr</span> <span class="n" style="color: #333;">op</span><span class="p">)</span></span>
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<pre style="margin: 0;">-<span id="LC335" class="line" lang="haskell"> <span class="p">;</span> <span class="p">(</span><span class="n" style="color: #333;">arg1'</span><span class="p">,</span> <span class="n" style="color: #333;">arg1_ty</span><span class="p">)</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">tcInfer<span class="idiff left right">AppHead</span></span> <span class="n" style="color: #333;">arg1</span></span>
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<pre style="margin: 0;">+<span id="LC335" class="line" lang="haskell"> <span class="p">;</span> <span class="p">(</span><span class="n" style="color: #333;">arg1'</span><span class="p">,</span> <span class="n" style="color: #333;">arg1_ty</span><span class="p">)</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">tcInfer<span class="idiff left right">Rho</span></span> <span class="n" style="color: #333;">arg1</span></span>
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<pre style="margin: 0;"> <span id="LC336" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC337" class="line" lang="haskell"> <span class="p">;</span> <span class="kr" style="font-weight: 600;">let</span> <span class="n" style="color: #333;">doc</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">text</span> <span class="s" style="color: #d14;">"The first argument of ($) takes"</span></span>
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<pre style="margin: 0;"> <span id="LC338" class="line" lang="haskell"> <span class="n" style="color: #333;">orig1</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">lexprCtOrigin</span> <span class="n" style="color: #333;">arg1</span></span>
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<td class="diff-line-num unfold js-unfold new_line" data-linenumber="373" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>
<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -373,7 +373,7 @@ tcExpr expr@(OpApp fix arg1 op arg2) res_ty</td>
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373
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<pre style="margin: 0;"> <span id="LC373" class="line" lang="haskell"></span>
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374
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<pre style="margin: 0;"> <span id="LC374" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">tcWrapResult</span> <span class="n" style="color: #333;">expr</span> <span class="n" style="color: #333;">expr'</span> <span class="n" style="color: #333;">op_res_ty</span> <span class="n" style="color: #333;">res_ty</span> <span class="p">}</span></span>
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<pre style="margin: 0;"> <span id="LC375" class="line" lang="haskell"></span>
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<pre style="margin: 0;">-<span id="LC376" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">|</span> <span class="p"><span class="idiff left">(</span></span><span class="kt" style="color: #458; font-weight: 600;"><span class="idiff">L</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">loc</span></span><span class="idiff"> </span><span class="p"><span class="idiff">(</span></span><span class="kt" style="color: #458; font-weight: 600;"><span class="idiff">HsRecFld</span></span><span class="idiff"> </span><span class="kr" style="font-weight: 600;"><span class="idiff">_</span></span><span class="idiff"> </span><span class="p"><span class="idiff">(</span></span><span class="kt" style="color: #458; font-weight: 600;"><span class="idiff">Ambiguous</span></span><span class="idiff"> </span><span class="kr" style="font-weight: 600;"><span class="idiff">_</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">lbl</span></span><span class="p"><span class="idiff right">)</span>))</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">op</span></span>
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<pre style="margin: 0;">+<span id="LC376" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">|</span> <span class="kt" style="color: #458; font-weight: 600;"><span class="idiff left">L</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">loc</span></span><span class="idiff"> </span><span class="p"><span class="idiff">(</span></span><span class="kt" style="color: #458; font-weight: 600;"><span class="idiff">HsRecFld</span></span><span class="idiff"> </span><span class="kr" style="font-weight: 600;"><span class="idiff">_</span></span><span class="idiff"> </span><span class="p"><span class="idiff">(</span></span><span class="kt" style="color: #458; font-weight: 600;"><span class="idiff">Ambiguous</span></span><span class="idiff"> </span><span class="kr" style="font-weight: 600;"><span class="idiff">_</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff right">lbl</span></span><span class="p">))</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">op</span></span>
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377
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<pre style="margin: 0;"> <span id="LC377" class="line" lang="haskell"> <span class="p">,</span> <span class="kt" style="color: #458; font-weight: 600;">Just</span> <span class="n" style="color: #333;">sig_ty</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">obviousSig</span> <span class="p">(</span><span class="n" style="color: #333;">unLoc</span> <span class="n" style="color: #333;">arg1</span><span class="p">)</span></span>
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378
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<pre style="margin: 0;"> <span id="LC378" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- See Note [Disambiguating record fields]</span></span>
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<pre style="margin: 0;"> <span id="LC379" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">do</span> <span class="p">{</span> <span class="n" style="color: #333;">sig_tc_ty</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">tcHsSigWcType</span> <span class="kt" style="color: #458; font-weight: 600;">ExprSigCtxt</span> <span class="n" style="color: #333;">sig_ty</span></span>
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<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -384,16 +384,24 @@ tcExpr expr@(OpApp fix arg1 op arg2) res_ty</td>
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384
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384
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<pre style="margin: 0;"> <span id="LC384" class="line" lang="haskell"></span>
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385
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<pre style="margin: 0;"> <span id="LC385" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">|</span> <span class="n" style="color: #333;">otherwise</span></span>
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<pre style="margin: 0;"> <span id="LC386" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">do</span> <span class="p">{</span> <span class="n" style="color: #333;">traceTc</span> <span class="s" style="color: #d14;">"Non Application rule"</span> <span class="p">(</span><span class="n" style="color: #333;">ppr</span> <span class="n" style="color: #333;">op</span><span class="p">)</span></span>
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<pre style="margin: 0;">-<span id="LC387" class="line" lang="haskell"> <span class="p">;</span> <span class="p">(</span><span class="n" style="color: #333;">wrap</span><span class="p">,</span> <span class="n" style="color: #333;">op'</span><span class="p">,</span> <span class="p">[</span><span class="kt" style="color: #458; font-weight: 600;">HsValArg</span> <span class="n" style="color: #333;">arg1'</span><span class="p">,</span> <span class="kt" style="color: #458; font-weight: 600;">HsValArg</span> <span class="n" style="color: #333;">arg2'</span><span class="p">])</span></span>
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388
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<pre style="margin: 0;">-<span id="LC388" class="line" lang="haskell"> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">tcApp</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Just</span> <span class="o" style="font-weight: 600;">$</span> <span class="n" style="color: #333;">mk_op_msg</span> <span class="n" style="color: #333;">op</span><span class="p">)</span></span>
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389
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<pre style="margin: 0;">-<span id="LC389" class="line" lang="haskell"> <span class="n" style="color: #333;">op</span> <span class="p">[</span><span class="kt" style="color: #458; font-weight: 600;">HsValArg</span> <span class="n" style="color: #333;">arg1</span><span class="p">,</span> <span class="kt" style="color: #458; font-weight: 600;">HsValArg</span> <span class="n" style="color: #333;">arg2</span><span class="p">]</span> <span class="n" style="color: #333;">res_ty</span></span>
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390
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<pre style="margin: 0;">-<span id="LC390" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">return</span> <span class="p">(</span><span class="n" style="color: #333;">mkHsWrap</span> <span class="n" style="color: #333;">wrap</span> <span class="o" style="font-weight: 600;">$</span> <span class="kt" style="color: #458; font-weight: 600;">OpApp</span> <span class="n" style="color: #333;">fix</span> <span class="n" style="color: #333;">arg1'</span> <span class="n" style="color: #333;">op'</span> <span class="n" style="color: #333;">arg2'</span><span class="p">)</span> <span class="p">}</span></span>
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<pre style="margin: 0;">+<span id="LC387" class="line" lang="haskell"> <span class="p">;</span> <span class="p">(</span><span class="n" style="color: #333;">op'</span><span class="p">,</span> <span class="n" style="color: #333;">op_ty</span><span class="p">)</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">tcInferRho</span> <span class="n" style="color: #333;">op</span></span>
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<pre style="margin: 0;">+<span id="LC388" class="line" lang="haskell"></span>
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<pre style="margin: 0;">+<span id="LC389" class="line" lang="haskell"> <span class="p">;</span> <span class="p">(</span><span class="n" style="color: #333;">wrap_fun</span><span class="p">,</span> <span class="p">[</span><span class="n" style="color: #333;">arg1_ty</span><span class="p">,</span> <span class="n" style="color: #333;">arg2_ty</span><span class="p">],</span> <span class="n" style="color: #333;">op_res_ty</span><span class="p">)</span></span>
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<pre style="margin: 0;">+<span id="LC390" class="line" lang="haskell"> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">matchActualFunTys</span> <span class="p">(</span><span class="n" style="color: #333;">mk_op_msg</span> <span class="n" style="color: #333;">op</span><span class="p">)</span> <span class="n" style="color: #333;">fn_orig</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Just</span> <span class="p">(</span><span class="n" style="color: #333;">unLoc</span> <span class="n" style="color: #333;">op</span><span class="p">))</span> <span class="mi" style="color: #099;">2</span> <span class="n" style="color: #333;">op_ty</span></span>
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<pre style="margin: 0;">+<span id="LC391" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">arg1'</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">tcArg</span> <span class="n" style="color: #333;">op</span> <span class="n" style="color: #333;">arg1</span> <span class="n" style="color: #333;">arg1_ty</span> <span class="mi" style="color: #099;">1</span></span>
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<pre style="margin: 0;">+<span id="LC392" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">arg2'</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">tcArg</span> <span class="n" style="color: #333;">op</span> <span class="n" style="color: #333;">arg2</span> <span class="n" style="color: #333;">arg2_ty</span> <span class="mi" style="color: #099;">2</span></span>
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<pre style="margin: 0;">+<span id="LC393" class="line" lang="haskell"></span>
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<pre style="margin: 0;">+<span id="LC394" class="line" lang="haskell"> <span class="p">;</span> <span class="kr" style="font-weight: 600;">let</span> <span class="n" style="color: #333;">expr'</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">OpApp</span> <span class="n" style="color: #333;">fix</span> <span class="n" style="color: #333;">arg1'</span> <span class="p">(</span><span class="n" style="color: #333;">mkLHsWrap</span> <span class="n" style="color: #333;">wrap_fun</span> <span class="n" style="color: #333;">op'</span><span class="p">)</span> <span class="n" style="color: #333;">arg2'</span></span>
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395
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<pre style="margin: 0;">+<span id="LC395" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">tcWrapResult</span> <span class="n" style="color: #333;">expr</span> <span class="n" style="color: #333;">expr'</span> <span class="n" style="color: #333;">op_res_ty</span> <span class="n" style="color: #333;">res_ty</span> <span class="p">}</span></span>
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396
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<pre style="margin: 0;">+<span id="LC396" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">where</span></span>
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397
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<pre style="margin: 0;">+<span id="LC397" class="line" lang="haskell"> <span class="n" style="color: #333;">fn_orig</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">lexprCtOrigin</span> <span class="n" style="color: #333;">op</span></span>
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398
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<pre style="margin: 0;">+<span id="LC398" class="line" lang="haskell"></span>
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399
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<pre style="margin: 0;"> <span id="LC399" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC400" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- Right sections, equivalent to \ x -> x `op` expr, or</span></span>
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401
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<pre style="margin: 0;"> <span id="LC401" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- \ x -> op x expr</span></span>
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402
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<pre style="margin: 0;"> <span id="LC402" class="line" lang="haskell"></span>
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395
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403
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<pre style="margin: 0;"> <span id="LC403" class="line" lang="haskell"><span class="n" style="color: #333;">tcExpr</span> <span class="n" style="color: #333;">expr</span><span class="o" style="font-weight: 600;">@</span><span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">SectionR</span> <span class="n" style="color: #333;">x</span> <span class="n" style="color: #333;">op</span> <span class="n" style="color: #333;">arg2</span><span class="p">)</span> <span class="n" style="color: #333;">res_ty</span></span>
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<pre style="margin: 0;">-<span id="LC396" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">do</span> <span class="p">{</span> <span class="p">(</span><span class="n" style="color: #333;">op'</span><span class="p">,</span> <span class="n" style="color: #333;">op_ty</span><span class="p">)</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">tcInfer<span class="idiff left right">AppHead</span></span> <span class="n" style="color: #333;">op</span></span>
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<pre style="margin: 0;">+<span id="LC404" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">do</span> <span class="p">{</span> <span class="p">(</span><span class="n" style="color: #333;">op'</span><span class="p">,</span> <span class="n" style="color: #333;">op_ty</span><span class="p">)</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">tcInfer<span class="idiff left right">Rho</span></span> <span class="n" style="color: #333;">op</span></span>
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397
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405
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<pre style="margin: 0;"> <span id="LC405" class="line" lang="haskell"> <span class="p">;</span> <span class="p">(</span><span class="n" style="color: #333;">wrap_fun</span><span class="p">,</span> <span class="p">[</span><span class="n" style="color: #333;">arg1_ty</span><span class="p">,</span> <span class="n" style="color: #333;">arg2_ty</span><span class="p">],</span> <span class="n" style="color: #333;">op_res_ty</span><span class="p">)</span></span>
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398
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406
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<pre style="margin: 0;"> <span id="LC406" class="line" lang="haskell"> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">matchActualFunTys</span> <span class="p">(</span><span class="n" style="color: #333;">mk_op_msg</span> <span class="n" style="color: #333;">op</span><span class="p">)</span> <span class="n" style="color: #333;">fn_orig</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Just</span> <span class="p">(</span><span class="n" style="color: #333;">unLoc</span> <span class="n" style="color: #333;">op</span><span class="p">))</span> <span class="mi" style="color: #099;">2</span> <span class="n" style="color: #333;">op_ty</span></span>
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399
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407
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<pre style="margin: 0;"> <span id="LC407" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">wrap_res</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">tcSubTypeHR</span> <span class="kt" style="color: #458; font-weight: 600;">SectionOrigin</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Just</span> <span class="n" style="color: #333;">expr</span><span class="p">)</span></span>
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<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -408,7 +416,7 @@ tcExpr expr@(SectionR x op arg2) res_ty</td>
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408
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416
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<pre style="margin: 0;"> <span id="LC416" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- See #13285</span></span>
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409
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417
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<pre style="margin: 0;"> <span id="LC417" class="line" lang="haskell"></span>
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410
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418
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<pre style="margin: 0;"> <span id="LC418" class="line" lang="haskell"><span class="n" style="color: #333;">tcExpr</span> <span class="n" style="color: #333;">expr</span><span class="o" style="font-weight: 600;">@</span><span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">SectionL</span> <span class="n" style="color: #333;">x</span> <span class="n" style="color: #333;">arg1</span> <span class="n" style="color: #333;">op</span><span class="p">)</span> <span class="n" style="color: #333;">res_ty</span></span>
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411
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<pre style="margin: 0;">-<span id="LC411" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">do</span> <span class="p">{</span> <span class="p">(</span><span class="n" style="color: #333;">op'</span><span class="p">,</span> <span class="n" style="color: #333;">op_ty</span><span class="p">)</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">tcInfer<span class="idiff left right">AppHead</span></span> <span class="n" style="color: #333;">op</span></span>
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419
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<pre style="margin: 0;">+<span id="LC419" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">do</span> <span class="p">{</span> <span class="p">(</span><span class="n" style="color: #333;">op'</span><span class="p">,</span> <span class="n" style="color: #333;">op_ty</span><span class="p">)</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">tcInfer<span class="idiff left right">Rho</span></span> <span class="n" style="color: #333;">op</span></span>
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412
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420
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<pre style="margin: 0;"> <span id="LC420" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">dflags</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">getDynFlags</span> <span class="c1" style="color: #998; font-style: italic;">-- Note [Left sections]</span></span>
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413
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421
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<pre style="margin: 0;"> <span id="LC421" class="line" lang="haskell"> <span class="p">;</span> <span class="kr" style="font-weight: 600;">let</span> <span class="n" style="color: #333;">n_reqd_args</span> <span class="o" style="font-weight: 600;">|</span> <span class="n" style="color: #333;">xopt</span> <span class="kt" style="color: #458; font-weight: 600;">LangExt</span><span class="o" style="font-weight: 600;">.</span><span class="kt" style="color: #458; font-weight: 600;">PostfixOperators</span> <span class="n" style="color: #333;">dflags</span> <span class="o" style="font-weight: 600;">=</span> <span class="mi" style="color: #099;">1</span></span>
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414
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422
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<pre style="margin: 0;"> <span id="LC422" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">|</span> <span class="n" style="color: #333;">otherwise</span> <span class="o" style="font-weight: 600;">=</span> <span class="mi" style="color: #099;">2</span></span>
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<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -504,7 +512,7 @@ tcExpr (ExplicitList _ witness exprs) res_ty</td>
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504
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512
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<pre style="margin: 0;"> <span id="LC512" class="line" lang="haskell"></span>
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513
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<pre style="margin: 0;"> <span id="LC513" class="line" lang="haskell"><span class="n" style="color: #333;">tcExpr</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">HsLet</span> <span class="n" style="color: #333;">x</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">L</span> <span class="n" style="color: #333;">l</span> <span class="n" style="color: #333;">binds</span><span class="p">)</span> <span class="n" style="color: #333;">expr</span><span class="p">)</span> <span class="n" style="color: #333;">res_ty</span></span>
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<pre style="margin: 0;"> <span id="LC514" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">do</span> <span class="p">{</span> <span class="p">(</span><span class="n" style="color: #333;">binds'</span><span class="p">,</span> <span class="n" style="color: #333;">expr'</span><span class="p">)</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">tcLocalBinds</span> <span class="n" style="color: #333;">binds</span> <span class="o" style="font-weight: 600;">$</span></span>
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<pre style="margin: 0;">-<span id="LC507" class="line" lang="haskell"> <span class="n" style="color: #333;">tc<span class="idiff left right">Mono</span>Expr</span> <span class="n" style="color: #333;">expr</span> <span class="n" style="color: #333;">res_ty</span></span>
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<pre style="margin: 0;">+<span id="LC515" class="line" lang="haskell"> <span class="n" style="color: #333;">tc<span class="idiff left right">L</span>Expr</span> <span class="n" style="color: #333;">expr</span> <span class="n" style="color: #333;">res_ty</span></span>
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516
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<pre style="margin: 0;"> <span id="LC516" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">return</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">HsLet</span> <span class="n" style="color: #333;">x</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">L</span> <span class="n" style="color: #333;">l</span> <span class="n" style="color: #333;">binds'</span><span class="p">)</span> <span class="n" style="color: #333;">expr'</span><span class="p">)</span> <span class="p">}</span></span>
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517
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<pre style="margin: 0;"> <span id="LC517" class="line" lang="haskell"></span>
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518
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<pre style="margin: 0;"> <span id="LC518" class="line" lang="haskell"><span class="n" style="color: #333;">tcExpr</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">HsCase</span> <span class="n" style="color: #333;">x</span> <span class="n" style="color: #333;">scrut</span> <span class="n" style="color: #333;">matches</span><span class="p">)</span> <span class="n" style="color: #333;">res_ty</span></span>
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<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -527,13 +535,13 @@ tcExpr (HsCase x scrut matches) res_ty</td>
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527
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<pre style="margin: 0;"> <span id="LC535" class="line" lang="haskell"> <span class="n" style="color: #333;">mc_body</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">tcBody</span> <span class="p">}</span></span>
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536
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<pre style="margin: 0;"> <span id="LC536" class="line" lang="haskell"></span>
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537
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<pre style="margin: 0;"> <span id="LC537" class="line" lang="haskell"><span class="n" style="color: #333;">tcExpr</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">HsIf</span> <span class="n" style="color: #333;">x</span> <span class="kt" style="color: #458; font-weight: 600;">NoSyntaxExprRn</span> <span class="n" style="color: #333;">pred</span> <span class="n" style="color: #333;">b1</span> <span class="n" style="color: #333;">b2</span><span class="p">)</span> <span class="n" style="color: #333;">res_ty</span> <span class="c1" style="color: #998; font-style: italic;">-- Ordinary 'if'</span></span>
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<pre style="margin: 0;">-<span id="LC530" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">do</span> <span class="p">{</span> <span class="n" style="color: #333;">pred'</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">tc<span class="idiff left right">Mono</span>Expr</span> <span class="n" style="color: #333;">pred</span> <span class="p">(</span><span class="n" style="color: #333;">mkCheckExpType</span> <span class="n" style="color: #333;">boolTy</span><span class="p">)</span></span>
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<pre style="margin: 0;">+<span id="LC538" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">do</span> <span class="p">{</span> <span class="n" style="color: #333;">pred'</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">tc<span class="idiff left right">L</span>Expr</span> <span class="n" style="color: #333;">pred</span> <span class="p">(</span><span class="n" style="color: #333;">mkCheckExpType</span> <span class="n" style="color: #333;">boolTy</span><span class="p">)</span></span>
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<pre style="margin: 0;"> <span id="LC539" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">res_ty</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">tauifyExpType</span> <span class="n" style="color: #333;">res_ty</span></span>
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<pre style="margin: 0;"> <span id="LC540" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- Just like Note [Case branches must never infer a non-tau type]</span></span>
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<pre style="margin: 0;"> <span id="LC541" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- in GHC.Tc.Gen.Match (See #10619)</span></span>
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<pre style="margin: 0;"> <span id="LC542" class="line" lang="haskell"></span>
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<pre style="margin: 0;">-<span id="LC535" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">b1'</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">tc<span class="idiff left right">Mono</span>Expr</span> <span class="n" style="color: #333;">b1</span> <span class="n" style="color: #333;">res_ty</span></span>
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<pre style="margin: 0;">-<span id="LC536" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">b2'</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">tc<span class="idiff left right">Mono</span>Expr</span> <span class="n" style="color: #333;">b2</span> <span class="n" style="color: #333;">res_ty</span></span>
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<pre style="margin: 0;">+<span id="LC543" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">b1'</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">tc<span class="idiff left right">L</span>Expr</span> <span class="n" style="color: #333;">b1</span> <span class="n" style="color: #333;">res_ty</span></span>
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<pre style="margin: 0;">+<span id="LC544" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">b2'</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">tc<span class="idiff left right">L</span>Expr</span> <span class="n" style="color: #333;">b2</span> <span class="n" style="color: #333;">res_ty</span></span>
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<pre style="margin: 0;"> <span id="LC545" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">return</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">HsIf</span> <span class="n" style="color: #333;">x</span> <span class="kt" style="color: #458; font-weight: 600;">NoSyntaxExprTc</span> <span class="n" style="color: #333;">pred'</span> <span class="n" style="color: #333;">b1'</span> <span class="n" style="color: #333;">b2'</span><span class="p">)</span> <span class="p">}</span></span>
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<pre style="margin: 0;"> <span id="LC546" class="line" lang="haskell"></span>
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547
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<pre style="margin: 0;"> <span id="LC547" class="line" lang="haskell"><span class="n" style="color: #333;">tcExpr</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">HsIf</span> <span class="n" style="color: #333;">x</span> <span class="n" style="color: #333;">fun</span><span class="o" style="font-weight: 600;">@</span><span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">SyntaxExprRn</span> <span class="p">{})</span> <span class="n" style="color: #333;">pred</span> <span class="n" style="color: #333;">b1</span> <span class="n" style="color: #333;">b2</span><span class="p">)</span> <span class="n" style="color: #333;">res_ty</span></span>
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<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -985,11 +993,24 @@ tcExpr e@(HsRnBracketOut _ brack ps) res_ty</td>
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<pre style="margin: 0;"> <span id="LC993" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">************************************************************************</span></span>
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<pre style="margin: 0;"> <span id="LC994" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">-}</span></span>
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995
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<pre style="margin: 0;"> <span id="LC995" class="line" lang="haskell"></span>
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<pre style="margin: 0;">-<span id="LC988" class="line" lang="haskell"><span class="n" style="color: #333;">tcExpr</span> <span class="n" style="color: #333;">other</span> <span class="kr" style="font-weight: 600;">_</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">pprPanic</span> <span class="s" style="color: #d14;">"tc<span class="idiff left right">Mono</span>Expr"</span> <span class="p">(</span><span class="n" style="color: #333;">ppr</span> <span class="n" style="color: #333;">other</span><span class="p">)</span></span>
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<pre style="margin: 0;">+<span id="LC996" class="line" lang="haskell"><span class="n" style="color: #333;">tcExpr</span> <span class="n" style="color: #333;">other</span> <span class="kr" style="font-weight: 600;">_</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">pprPanic</span> <span class="s" style="color: #d14;">"tc<span class="idiff left right">L</span>Expr"</span> <span class="p">(</span><span class="n" style="color: #333;">ppr</span> <span class="n" style="color: #333;">other</span><span class="p">)</span></span>
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<pre style="margin: 0;"> <span id="LC997" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- Include ArrForm, ArrApp, which shouldn't appear at all</span></span>
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<pre style="margin: 0;"> <span id="LC998" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- Also HsTcBracketOut, HsQuasiQuoteE</span></span>
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999
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<pre style="margin: 0;"> <span id="LC999" class="line" lang="haskell"></span>
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1000
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<pre style="margin: 0;"> <span id="LC1000" class="line" lang="haskell"></span>
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<pre style="margin: 0;">+<span id="LC1001" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">{- *********************************************************************</span></span>
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<pre style="margin: 0;">+<span id="LC1002" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">* *</span></span>
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<pre style="margin: 0;">+<span id="LC1003" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;"> Pragmas on expressions</span></span>
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1004
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<pre style="margin: 0;">+<span id="LC1004" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">* *</span></span>
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<pre style="margin: 0;">+<span id="LC1005" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">********************************************************************* -}</span></span>
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1006
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<pre style="margin: 0;">+<span id="LC1006" class="line" lang="haskell"></span>
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1007
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<pre style="margin: 0;">+<span id="LC1007" class="line" lang="haskell"><span class="n" style="color: #333;">tcExprPrag</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">HsPragE</span> <span class="kt" style="color: #458; font-weight: 600;">GhcRn</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">HsPragE</span> <span class="kt" style="color: #458; font-weight: 600;">GhcTc</span></span>
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1008
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<pre style="margin: 0;">+<span id="LC1008" class="line" lang="haskell"><span class="n" style="color: #333;">tcExprPrag</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">HsPragSCC</span> <span class="n" style="color: #333;">x1</span> <span class="n" style="color: #333;">src</span> <span class="n" style="color: #333;">ann</span><span class="p">)</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">HsPragSCC</span> <span class="n" style="color: #333;">x1</span> <span class="n" style="color: #333;">src</span> <span class="n" style="color: #333;">ann</span></span>
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1009
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<pre style="margin: 0;">+<span id="LC1009" class="line" lang="haskell"><span class="n" style="color: #333;">tcExprPrag</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">HsPragCore</span> <span class="n" style="color: #333;">x1</span> <span class="n" style="color: #333;">src</span> <span class="n" style="color: #333;">lbl</span><span class="p">)</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">HsPragCore</span> <span class="n" style="color: #333;">x1</span> <span class="n" style="color: #333;">src</span> <span class="n" style="color: #333;">lbl</span></span>
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1010
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<pre style="margin: 0;">+<span id="LC1010" class="line" lang="haskell"><span class="n" style="color: #333;">tcExprPrag</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">HsPragTick</span> <span class="n" style="color: #333;">x1</span> <span class="n" style="color: #333;">src</span> <span class="n" style="color: #333;">info</span> <span class="n" style="color: #333;">srcInfo</span><span class="p">)</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">HsPragTick</span> <span class="n" style="color: #333;">x1</span> <span class="n" style="color: #333;">src</span> <span class="n" style="color: #333;">info</span> <span class="n" style="color: #333;">srcInfo</span></span>
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1011
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<pre style="margin: 0;">+<span id="LC1011" class="line" lang="haskell"><span class="n" style="color: #333;">tcExprPrag</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">XHsPragE</span> <span class="n" style="color: #333;">x</span><span class="p">)</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">noExtCon</span> <span class="n" style="color: #333;">x</span></span>
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1012
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<pre style="margin: 0;">+<span id="LC1012" class="line" lang="haskell"></span>
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1013
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<pre style="margin: 0;">+<span id="LC1013" class="line" lang="haskell"></span>
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993
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1014
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<pre style="margin: 0;"> <span id="LC1014" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">{- *********************************************************************</span></span>
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1015
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<pre style="margin: 0;"> <span id="LC1015" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">* *</span></span>
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1016
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<pre style="margin: 0;"> <span id="LC1016" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;"> Expression with type signature e::ty</span></span>
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<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -1015,7 +1036,7 @@ tcExprWithSig expr hs_ty</td>
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1015
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1036
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<pre style="margin: 0;"> <span id="LC1036" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">-}</span></span>
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1016
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1037
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<pre style="margin: 0;"> <span id="LC1037" class="line" lang="haskell"></span>
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1017
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1038
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<pre style="margin: 0;"> <span id="LC1038" class="line" lang="haskell"><span class="n" style="color: #333;">tcArithSeq</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">Maybe</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">SyntaxExpr</span> <span class="kt" style="color: #458; font-weight: 600;">GhcRn</span><span class="p">)</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">ArithSeqInfo</span> <span class="kt" style="color: #458; font-weight: 600;">GhcRn</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">ExpRhoType</span></span>
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1018
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<pre style="margin: 0;">-<span id="LC1018" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TcM</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">HsExpr</span> <span class="kt" style="color: #458; font-weight: 600;">GhcTc<span class="idiff left right">Id</span></span><span class="p">)</span></span>
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1039
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<pre style="margin: 0;">+<span id="LC1039" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TcM</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">HsExpr</span> <span class="kt" style="color: #458; font-weight: 600;">GhcTc</span><span class="p">)</span></span>
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1019
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1040
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<pre style="margin: 0;"> <span id="LC1040" class="line" lang="haskell"></span>
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1020
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1041
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<pre style="margin: 0;"> <span id="LC1041" class="line" lang="haskell"><span class="n" style="color: #333;">tcArithSeq</span> <span class="n" style="color: #333;">witness</span> <span class="n" style="color: #333;">seq</span><span class="o" style="font-weight: 600;">@</span><span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">From</span> <span class="n" style="color: #333;">expr</span><span class="p">)</span> <span class="n" style="color: #333;">res_ty</span></span>
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1021
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1042
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<pre style="margin: 0;"> <span id="LC1042" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">do</span> <span class="p">{</span> <span class="p">(</span><span class="n" style="color: #333;">wrap</span><span class="p">,</span> <span class="n" style="color: #333;">elt_ty</span><span class="p">,</span> <span class="n" style="color: #333;">wit'</span><span class="p">)</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">arithSeqEltType</span> <span class="n" style="color: #333;">witness</span> <span class="n" style="color: #333;">res_ty</span></span>
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<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -1074,111 +1095,118 @@ arithSeqEltType (Just fl) res_ty</td>
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1095
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<pre style="margin: 0;"> <span id="LC1095" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">************************************************************************</span></span>
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1075
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1096
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<pre style="margin: 0;"> <span id="LC1096" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">-}</span></span>
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1097
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<pre style="margin: 0;"> <span id="LC1097" class="line" lang="haskell"></span>
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1077
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<pre style="margin: 0;">-<span id="LC1077" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- HsArg is defined in GHC.Hs.Types</span></span>
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1078
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<pre style="margin: 0;">-<span id="LC1078" class="line" lang="haskell"></span>
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1079
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<pre style="margin: 0;">-<span id="LC1079" class="line" lang="haskell"><span class="n" style="color: #333;">wrapHsArgs</span> <span class="o" style="font-weight: 600;">::</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">NoGhcTc</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">GhcPass</span> <span class="n" style="color: #333;">id</span><span class="p">)</span> <span class="o" style="font-weight: 600;">~</span> <span class="kt" style="color: #458; font-weight: 600;">GhcRn</span><span class="p">)</span></span>
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1080
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<pre style="margin: 0;">-<span id="LC1080" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=></span> <span class="kt" style="color: #458; font-weight: 600;">LHsExpr</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">GhcPass</span> <span class="n" style="color: #333;">id</span><span class="p">)</span></span>
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1081
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<pre style="margin: 0;">-<span id="LC1081" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">-></span> <span class="p">[</span><span class="kt" style="color: #458; font-weight: 600;">HsArg</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">LHsExpr</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">GhcPass</span> <span class="n" style="color: #333;">id</span><span class="p">))</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">LHsWcType</span> <span class="kt" style="color: #458; font-weight: 600;">GhcRn</span><span class="p">)]</span></span>
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<pre style="margin: 0;">-<span id="LC1082" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">LHsExpr</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">GhcPass</span> <span class="n" style="color: #333;">id</span><span class="p">)</span></span>
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1083
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<pre style="margin: 0;">-<span id="LC1083" class="line" lang="haskell"><span class="n" style="color: #333;">wrapHsArgs</span> <span class="n" style="color: #333;">f</span> <span class="kt" style="color: #458; font-weight: 600;">[]</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">f</span></span>
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1084
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<pre style="margin: 0;">-<span id="LC1084" class="line" lang="haskell"><span class="n" style="color: #333;">wrapHsArgs</span> <span class="n" style="color: #333;">f</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">HsValArg</span> <span class="n" style="color: #333;">a</span> <span class="o" style="font-weight: 600;">:</span> <span class="n" style="color: #333;">args</span><span class="p">)</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">wrapHsArgs</span> <span class="p">(</span><span class="n" style="color: #333;">mkHsApp</span> <span class="n" style="color: #333;">f</span> <span class="n" style="color: #333;">a</span><span class="p">)</span> <span class="n" style="color: #333;">args</span></span>
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1085
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<pre style="margin: 0;">-<span id="LC1085" class="line" lang="haskell"><span class="n" style="color: #333;">wrapHsArgs</span> <span class="n" style="color: #333;">f</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">HsTypeArg</span> <span class="kr" style="font-weight: 600;">_</span> <span class="n" style="color: #333;">t</span> <span class="o" style="font-weight: 600;">:</span> <span class="n" style="color: #333;">args</span><span class="p">)</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">wrapHsArgs</span> <span class="p">(</span><span class="n" style="color: #333;">mkHsAppType</span> <span class="n" style="color: #333;">f</span> <span class="n" style="color: #333;">t</span><span class="p">)</span> <span class="n" style="color: #333;">args</span></span>
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1086
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<pre style="margin: 0;">-<span id="LC1086" class="line" lang="haskell"><span class="n" style="color: #333;">wrapHsArgs</span> <span class="n" style="color: #333;">f</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">HsArgPar</span> <span class="n" style="color: #333;">sp</span> <span class="o" style="font-weight: 600;">:</span> <span class="n" style="color: #333;">args</span><span class="p">)</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">wrapHsArgs</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">L</span> <span class="n" style="color: #333;">sp</span> <span class="o" style="font-weight: 600;">$</span> <span class="kt" style="color: #458; font-weight: 600;">HsPar</span> <span class="n" style="color: #333;">noExtField</span> <span class="n" style="color: #333;">f</span><span class="p">)</span> <span class="n" style="color: #333;">args</span></span>
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1087
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<pre style="margin: 0;">-<span id="LC1087" class="line" lang="haskell"></span>
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1088
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<pre style="margin: 0;">-<span id="LC1088" class="line" lang="haskell"><span class="n" style="color: #333;">isHsValArg</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">HsArg</span> <span class="n" style="color: #333;">tm</span> <span class="n" style="color: #333;">ty</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Bool</span></span>
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1089
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<pre style="margin: 0;">-<span id="LC1089" class="line" lang="haskell"><span class="n" style="color: #333;">isHsValArg</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">HsValArg</span> <span class="p">{})</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">True</span></span>
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<pre style="margin: 0;">-<span id="LC1090" class="line" lang="haskell"><span class="n" style="color: #333;">isHsValArg</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">HsTypeArg</span> <span class="p">{})</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">False</span></span>
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1091
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<pre style="margin: 0;">-<span id="LC1091" class="line" lang="haskell"><span class="n" style="color: #333;">isHsValArg</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">HsArgPar</span> <span class="p">{})</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">False</span></span>
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1092
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<pre style="margin: 0;">-<span id="LC1092" class="line" lang="haskell"></span>
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1093
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<pre style="margin: 0;">-<span id="LC1093" class="line" lang="haskell"><span class="n" style="color: #333;">isArgPar</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">HsArg</span> <span class="n" style="color: #333;">tm</span> <span class="n" style="color: #333;">ty</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Bool</span></span>
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1094
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<pre style="margin: 0;">-<span id="LC1094" class="line" lang="haskell"><span class="n" style="color: #333;">isArgPar</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">HsArgPar</span> <span class="p">{})</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">True</span></span>
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1095
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<td class="diff-line-num new_line old" data-linenumber="1098" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">
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<pre style="margin: 0;">-<span id="LC1095" class="line" lang="haskell"><span class="n" style="color: #333;">isArgPar</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">HsValArg</span> <span class="p">{})</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">False</span></span>
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1096
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<pre style="margin: 0;">-<span id="LC1096" class="line" lang="haskell"><span class="n" style="color: #333;">isArgPar</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">HsTypeArg</span> <span class="p">{})</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">False</span></span>
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1097
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<pre style="margin: 0;">-<span id="LC1097" class="line" lang="haskell"></span>
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1098
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<pre style="margin: 0;">-<span id="LC1098" class="line" lang="haskell"><span class="n" style="color: #333;">isArgPar_maybe</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">HsArg</span> <span class="n" style="color: #333;">a</span> <span class="n" style="color: #333;">b</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Maybe</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">HsArg</span> <span class="n" style="color: #333;">c</span> <span class="n" style="color: #333;">d</span><span class="p">)</span></span>
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1099
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<pre style="margin: 0;">-<span id="LC1099" class="line" lang="haskell"><span class="n" style="color: #333;">isArgPar_maybe</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">HsArgPar</span> <span class="n" style="color: #333;">sp</span><span class="p">)</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">Just</span> <span class="o" style="font-weight: 600;">$</span> <span class="kt" style="color: #458; font-weight: 600;">HsArgPar</span> <span class="n" style="color: #333;">sp</span></span>
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1100
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<pre style="margin: 0;">-<span id="LC1100" class="line" lang="haskell"><span class="n" style="color: #333;">isArgPar_maybe</span> <span class="kr" style="font-weight: 600;">_</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">Nothing</span></span>
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1101
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<pre style="margin: 0;">-<span id="LC1101" class="line" lang="haskell"></span>
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1102
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<pre style="margin: 0;">-<span id="LC1102" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">type</span> <span class="kt" style="color: #458; font-weight: 600;">LHsExprArgIn</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">HsArg</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">LHsExpr</span> <span class="kt" style="color: #458; font-weight: 600;">GhcRn</span><span class="p">)</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">LHsWcType</span> <span class="kt" style="color: #458; font-weight: 600;">GhcRn</span><span class="p">)</span></span>
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1103
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<pre style="margin: 0;">-<span id="LC1103" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">type</span> <span class="kt" style="color: #458; font-weight: 600;">LHsExprArgOut</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">HsArg</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">LHsExpr</span> <span class="kt" style="color: #458; font-weight: 600;">GhcTcId</span><span class="p">)</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">LHsWcType</span> <span class="kt" style="color: #458; font-weight: 600;">GhcRn</span><span class="p">)</span></span>
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1104
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<pre style="margin: 0;">-<span id="LC1104" class="line" lang="haskell"></span>
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1105
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<pre style="margin: 0;">-<span id="LC1105" class="line" lang="haskell"><span class="n" style="color: #333;">tcApp1</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">HsExpr</span> <span class="kt" style="color: #458; font-weight: 600;">GhcRn</span> <span class="c1" style="color: #998; font-style: italic;">-- either HsApp or HsAppType</span></span>
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<td class="diff-line-num old old_line" data-linenumber="1106" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">
1106
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<pre style="margin: 0;">-<span id="LC1106" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">ExpRhoType</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TcM</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">HsExpr</span> <span class="kt" style="color: #458; font-weight: 600;">GhcTcId</span><span class="p">)</span></span>
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1107
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<pre style="margin: 0;">-<span id="LC1107" class="line" lang="haskell"><span class="n" style="color: #333;">tcApp1</span> <span class="n" style="color: #333;">e</span> <span class="n" style="color: #333;">res_ty</span></span>
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1108
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<pre style="margin: 0;">-<span id="LC1108" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">do</span> <span class="p">{</span> <span class="p">(</span><span class="n" style="color: #333;">wrap</span><span class="p">,</span> <span class="n" style="color: #333;">fun</span><span class="p">,</span> <span class="n" style="color: #333;">args</span><span class="p">)</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">tcApp</span> <span class="kt" style="color: #458; font-weight: 600;">Nothing</span> <span class="p">(</span><span class="n" style="color: #333;">noLoc</span> <span class="n" style="color: #333;">e</span><span class="p">)</span> <span class="kt" style="color: #458; font-weight: 600;">[]</span> <span class="n" style="color: #333;">res_ty</span></span>
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1109
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<pre style="margin: 0;">-<span id="LC1109" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">return</span> <span class="p">(</span><span class="n" style="color: #333;">mkHsWrap</span> <span class="n" style="color: #333;">wrap</span> <span class="o" style="font-weight: 600;">$</span> <span class="n" style="color: #333;">unLoc</span> <span class="o" style="font-weight: 600;">$</span> <span class="n" style="color: #333;">wrapHsArgs</span> <span class="n" style="color: #333;">fun</span> <span class="n" style="color: #333;">args</span><span class="p">)</span> <span class="p">}</span></span>
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<pre style="margin: 0;">-<span id="LC1110" class="line" lang="haskell"></span>
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1111
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<pre style="margin: 0;">-<span id="LC1111" class="line" lang="haskell"><span class="n" style="color: #333;">tcApp</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">Maybe</span> <span class="kt" style="color: #458; font-weight: 600;">SDoc</span> <span class="c1" style="color: #998; font-style: italic;">-- like "The function `f' is applied to"</span></span>
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1112
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<pre style="margin: 0;">-<span id="LC1112" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- or leave out to get exactly that message</span></span>
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1113
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<pre style="margin: 0;">-<span id="LC1113" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">LHsExpr</span> <span class="kt" style="color: #458; font-weight: 600;">GhcRn</span> <span class="o" style="font-weight: 600;">-></span> <span class="p">[</span><span class="kt" style="color: #458; font-weight: 600;">LHsExprArgIn</span><span class="p">]</span> <span class="c1" style="color: #998; font-style: italic;">-- Function and args</span></span>
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1114
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<pre style="margin: 0;">-<span id="LC1114" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">ExpRhoType</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TcM</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">HsWrapper</span><span class="p">,</span> <span class="kt" style="color: #458; font-weight: 600;">LHsExpr</span> <span class="kt" style="color: #458; font-weight: 600;">GhcTcId</span><span class="p">,</span> <span class="p">[</span><span class="kt" style="color: #458; font-weight: 600;">LHsExprArgOut</span><span class="p">])</span></span>
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1115
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<pre style="margin: 0;">-<span id="LC1115" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- (wrap, fun, args). For an ordinary function application,</span></span>
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1116
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<pre style="margin: 0;">-<span id="LC1116" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- these should be assembled as (wrap (fun args)).</span></span>
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1117
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<pre style="margin: 0;">-<span id="LC1117" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- But OpApp is slightly different, so that's why the caller</span></span>
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1118
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<pre style="margin: 0;">-<span id="LC1118" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- must assemble</span></span>
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1119
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<pre style="margin: 0;">-<span id="LC1119" class="line" lang="haskell"></span>
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1120
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<pre style="margin: 0;">-<span id="LC1120" class="line" lang="haskell"><span class="n" style="color: #333;">tcApp</span> <span class="n" style="color: #333;">m_herald</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">L</span> <span class="n" style="color: #333;">sp</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">HsPar</span> <span class="kr" style="font-weight: 600;">_</span> <span class="n" style="color: #333;">fun</span><span class="p">))</span> <span class="n" style="color: #333;">args</span> <span class="n" style="color: #333;">res_ty</span></span>
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1121
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<pre style="margin: 0;">-<span id="LC1121" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">tcApp</span> <span class="n" style="color: #333;">m_herald</span> <span class="n" style="color: #333;">fun</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">HsArgPar</span> <span class="n" style="color: #333;">sp</span> <span class="o" style="font-weight: 600;">:</span> <span class="n" style="color: #333;">args</span><span class="p">)</span> <span class="n" style="color: #333;">res_ty</span></span>
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1122
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<pre style="margin: 0;">-<span id="LC1122" class="line" lang="haskell"></span>
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1123
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<pre style="margin: 0;">-<span id="LC1123" class="line" lang="haskell"><span class="n" style="color: #333;">tcApp</span> <span class="n" style="color: #333;">m_herald</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">L</span> <span class="kr" style="font-weight: 600;">_</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">HsApp</span> <span class="kr" style="font-weight: 600;">_</span> <span class="n" style="color: #333;">fun</span> <span class="n" style="color: #333;">arg1</span><span class="p">))</span> <span class="n" style="color: #333;">args</span> <span class="n" style="color: #333;">res_ty</span></span>
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1124
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<pre style="margin: 0;">-<span id="LC1124" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">tcApp</span> <span class="n" style="color: #333;">m_herald</span> <span class="n" style="color: #333;">fun</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">HsValArg</span> <span class="n" style="color: #333;">arg1</span> <span class="o" style="font-weight: 600;">:</span> <span class="n" style="color: #333;">args</span><span class="p">)</span> <span class="n" style="color: #333;">res_ty</span></span>
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1125
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<pre style="margin: 0;">-<span id="LC1125" class="line" lang="haskell"></span>
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1126
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<pre style="margin: 0;">-<span id="LC1126" class="line" lang="haskell"><span class="n" style="color: #333;">tcApp</span> <span class="n" style="color: #333;">m_herald</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">L</span> <span class="kr" style="font-weight: 600;">_</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">HsAppType</span> <span class="kr" style="font-weight: 600;">_</span> <span class="n" style="color: #333;">fun</span> <span class="n" style="color: #333;">ty1</span><span class="p">))</span> <span class="n" style="color: #333;">args</span> <span class="n" style="color: #333;">res_ty</span></span>
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1127
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<pre style="margin: 0;">-<span id="LC1127" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">tcApp</span> <span class="n" style="color: #333;">m_herald</span> <span class="n" style="color: #333;">fun</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">HsTypeArg</span> <span class="n" style="color: #333;">noSrcSpan</span> <span class="n" style="color: #333;">ty1</span> <span class="o" style="font-weight: 600;">:</span> <span class="n" style="color: #333;">args</span><span class="p">)</span> <span class="n" style="color: #333;">res_ty</span></span>
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1128
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<pre style="margin: 0;">-<span id="LC1128" class="line" lang="haskell"></span>
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1129
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<pre style="margin: 0;">-<span id="LC1129" class="line" lang="haskell"><span class="n" style="color: #333;">tcApp</span> <span class="n" style="color: #333;">m_herald</span> <span class="n" style="color: #333;">fun</span><span class="o" style="font-weight: 600;">@</span><span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">L</span> <span class="n" style="color: #333;">loc</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">HsRecFld</span> <span class="kr" style="font-weight: 600;">_</span> <span class="n" style="color: #333;">fld_lbl</span><span class="p">))</span> <span class="n" style="color: #333;">args</span> <span class="n" style="color: #333;">res_ty</span></span>
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1130
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<pre style="margin: 0;">-<span id="LC1130" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">|</span> <span class="kt" style="color: #458; font-weight: 600;">Ambiguous</span> <span class="kr" style="font-weight: 600;">_</span> <span class="n" style="color: #333;">lbl</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">fld_lbl</span> <span class="c1" style="color: #998; font-style: italic;">-- Still ambiguous</span></span>
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1131
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<pre style="margin: 0;">-<span id="LC1131" class="line" lang="haskell"> <span class="p">,</span> <span class="kt" style="color: #458; font-weight: 600;">HsValArg</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">L</span> <span class="kr" style="font-weight: 600;">_</span> <span class="n" style="color: #333;">arg</span><span class="p">)</span> <span class="o" style="font-weight: 600;">:</span> <span class="kr" style="font-weight: 600;">_</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">filterOut</span> <span class="n" style="color: #333;">isArgPar</span> <span class="n" style="color: #333;">args</span> <span class="c1" style="color: #998; font-style: italic;">-- A value arg is first</span></span>
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1132
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<pre style="margin: 0;">-<span id="LC1132" class="line" lang="haskell"> <span class="p">,</span> <span class="kt" style="color: #458; font-weight: 600;">Just</span> <span class="n" style="color: #333;">sig_ty</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">obviousSig</span> <span class="n" style="color: #333;">arg</span> <span class="c1" style="color: #998; font-style: italic;">-- A type sig on the arg disambiguates</span></span>
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1098
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<pre style="margin: 0;">+<span id="LC1098" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- HsExprArg is a specialised verion HsArg is defined in GHC.Hs.Types</span></span>
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1099
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<pre style="margin: 0;">+<span id="LC1099" class="line" lang="haskell"></span>
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1100
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<pre style="margin: 0;">+<span id="LC1100" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- The outer location is the location of the application itself</span></span>
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1101
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<pre style="margin: 0;">+<span id="LC1101" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">type</span> <span class="kt" style="color: #458; font-weight: 600;">LHsExprArgIn</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">HsExprArg</span> <span class="kt" style="color: #458; font-weight: 600;">'Renamed</span></span>
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1102
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<pre style="margin: 0;">+<span id="LC1102" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">type</span> <span class="kt" style="color: #458; font-weight: 600;">LHsExprArgOut</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">HsExprArg</span> <span class="kt" style="color: #458; font-weight: 600;">'Typechecked</span></span>
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1103
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<pre style="margin: 0;">+<span id="LC1103" class="line" lang="haskell"></span>
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1104
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<pre style="margin: 0;">+<span id="LC1104" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- A GHC specific type, so using TTG only where necessary</span></span>
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1105
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<pre style="margin: 0;">+<span id="LC1105" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">data</span> <span class="kt" style="color: #458; font-weight: 600;">HsExprArg</span> <span class="n" style="color: #333;">id</span></span>
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1106
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<pre style="margin: 0;">+<span id="LC1106" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">HsExprValArg</span> <span class="kt" style="color: #458; font-weight: 600;">SrcSpan</span> <span class="c1" style="color: #998; font-style: italic;">-- Of the application</span></span>
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1107
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<pre style="margin: 0;">+<span id="LC1107" class="line" lang="haskell"> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">LHsExpr</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">GhcPass</span> <span class="n" style="color: #333;">id</span><span class="p">))</span></span>
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1108
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<pre style="margin: 0;">+<span id="LC1108" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">|</span> <span class="kt" style="color: #458; font-weight: 600;">HsExprTypeArg</span> <span class="kt" style="color: #458; font-weight: 600;">SrcSpan</span> <span class="c1" style="color: #998; font-style: italic;">-- Of the application</span></span>
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1109
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<pre style="margin: 0;">+<span id="LC1109" class="line" lang="haskell"> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">LHsWcType</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">NoGhcTc</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">GhcPass</span> <span class="n" style="color: #333;">id</span><span class="p">)))</span></span>
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1110
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<pre style="margin: 0;">+<span id="LC1110" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">!</span><span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">XExprTypeArg</span> <span class="n" style="color: #333;">id</span><span class="p">)</span></span>
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1111
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<pre style="margin: 0;">+<span id="LC1111" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">|</span> <span class="kt" style="color: #458; font-weight: 600;">HsExprPar</span> <span class="kt" style="color: #458; font-weight: 600;">SrcSpan</span> <span class="c1" style="color: #998; font-style: italic;">-- Of the (expr)</span></span>
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1112
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<pre style="margin: 0;">+<span id="LC1112" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">|</span> <span class="kt" style="color: #458; font-weight: 600;">HsArgWrap</span> <span class="o" style="font-weight: 600;">!</span><span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">XArgWrap</span> <span class="n" style="color: #333;">id</span><span class="p">)</span> <span class="c1" style="color: #998; font-style: italic;">-- Wrapper, after typechecking</span></span>
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1113
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<pre style="margin: 0;">+<span id="LC1113" class="line" lang="haskell"></span>
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<pre style="margin: 0;">+<span id="LC1114" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">instance</span> <span class="kt" style="color: #458; font-weight: 600;">OutputableBndrId</span> <span class="n" style="color: #333;">id</span> <span class="o" style="font-weight: 600;">=></span> <span class="kt" style="color: #458; font-weight: 600;">Outputable</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">HsExprArg</span> <span class="n" style="color: #333;">id</span><span class="p">)</span> <span class="kr" style="font-weight: 600;">where</span></span>
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<td class="diff-line-num new new_line" data-linenumber="1115" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
1115
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<pre style="margin: 0;">+<span id="LC1115" class="line" lang="haskell"> <span class="n" style="color: #333;">ppr</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">HsExprValArg</span> <span class="kr" style="font-weight: 600;">_</span> <span class="n" style="color: #333;">tm</span><span class="p">)</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">ppr</span> <span class="n" style="color: #333;">tm</span></span>
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<td class="diff-line-num new new_line" data-linenumber="1116" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
1116
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<pre style="margin: 0;">+<span id="LC1116" class="line" lang="haskell"> <span class="n" style="color: #333;">ppr</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">HsExprTypeArg</span> <span class="kr" style="font-weight: 600;">_</span> <span class="n" style="color: #333;">hs_ty</span> <span class="kr" style="font-weight: 600;">_</span><span class="p">)</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">char</span> <span class="sc" style="color: #d14;">'@'</span> <span class="o" style="font-weight: 600;"><></span> <span class="n" style="color: #333;">ppr</span> <span class="n" style="color: #333;">hs_ty</span></span>
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<td class="diff-line-num new new_line" data-linenumber="1117" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
1117
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<pre style="margin: 0;">+<span id="LC1117" class="line" lang="haskell"> <span class="n" style="color: #333;">ppr</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">HsExprPar</span> <span class="kr" style="font-weight: 600;">_</span><span class="p">)</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">text</span> <span class="s" style="color: #d14;">"HsExprPar"</span></span>
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<td class="diff-line-num new new_line" data-linenumber="1118" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
1118
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<pre style="margin: 0;">+<span id="LC1118" class="line" lang="haskell"> <span class="n" style="color: #333;">ppr</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">HsArgWrap</span> <span class="n" style="color: #333;">w</span><span class="p">)</span> <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">case</span> <span class="n" style="color: #333;">ghcPass</span> <span class="o" style="font-weight: 600;">@</span><span class="n" style="color: #333;">id</span> <span class="kr" style="font-weight: 600;">of</span></span>
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<td class="diff-line-num new new_line" data-linenumber="1119" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
1119
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<pre style="margin: 0;">+<span id="LC1119" class="line" lang="haskell"> <span class="kt" style="color: #458; font-weight: 600;">GhcTc</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">text</span> <span class="s" style="color: #d14;">"HsArgWrap"</span> <span class="o" style="font-weight: 600;"><+></span> <span class="n" style="color: #333;">ppr</span> <span class="n" style="color: #333;">w</span></span>
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<td class="diff-line-num new new_line" data-linenumber="1120" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
1120
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<pre style="margin: 0;">+<span id="LC1120" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">_</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">empty</span></span>
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1121
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<pre style="margin: 0;">+<span id="LC1121" class="line" lang="haskell"></span>
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<td class="diff-line-num new new_line" data-linenumber="1122" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
1122
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<pre style="margin: 0;">+<span id="LC1122" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">type</span> <span class="n" style="color: #333;">family</span> <span class="kt" style="color: #458; font-weight: 600;">XExprTypeArg</span> <span class="n" style="color: #333;">id</span> <span class="kr" style="font-weight: 600;">where</span></span>
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<td class="diff-line-num new new_line" data-linenumber="1123" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
1123
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<pre style="margin: 0;">+<span id="LC1123" class="line" lang="haskell"> <span class="kt" style="color: #458; font-weight: 600;">XExprTypeArg</span> <span class="kt" style="color: #458; font-weight: 600;">'Parsed</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">NoExtField</span></span>
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1124
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<pre style="margin: 0;">+<span id="LC1124" class="line" lang="haskell"> <span class="kt" style="color: #458; font-weight: 600;">XExprTypeArg</span> <span class="kt" style="color: #458; font-weight: 600;">'Renamed</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">NoExtField</span></span>
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1125
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<pre style="margin: 0;">+<span id="LC1125" class="line" lang="haskell"> <span class="kt" style="color: #458; font-weight: 600;">XExprTypeArg</span> <span class="kt" style="color: #458; font-weight: 600;">'Typechecked</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">Type</span></span>
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1126
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<pre style="margin: 0;">+<span id="LC1126" class="line" lang="haskell"></span>
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<td class="diff-line-num new new_line" data-linenumber="1127" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
1127
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<pre style="margin: 0;">+<span id="LC1127" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">type</span> <span class="n" style="color: #333;">family</span> <span class="kt" style="color: #458; font-weight: 600;">XArgWrap</span> <span class="n" style="color: #333;">id</span> <span class="kr" style="font-weight: 600;">where</span></span>
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<td class="diff-line-num new new_line" data-linenumber="1128" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
1128
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<pre style="margin: 0;">+<span id="LC1128" class="line" lang="haskell"> <span class="kt" style="color: #458; font-weight: 600;">XArgWrap</span> <span class="kt" style="color: #458; font-weight: 600;">'Parsed</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">NoExtField</span></span>
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<td class="diff-line-num new new_line" data-linenumber="1129" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
1129
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<pre style="margin: 0;">+<span id="LC1129" class="line" lang="haskell"> <span class="kt" style="color: #458; font-weight: 600;">XArgWrap</span> <span class="kt" style="color: #458; font-weight: 600;">'Renamed</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">NoExtField</span></span>
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<td class="diff-line-num new new_line" data-linenumber="1130" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
1130
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<pre style="margin: 0;">+<span id="LC1130" class="line" lang="haskell"> <span class="kt" style="color: #458; font-weight: 600;">XArgWrap</span> <span class="kt" style="color: #458; font-weight: 600;">'Typechecked</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">HsWrapper</span></span>
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1131
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<pre style="margin: 0;">+<span id="LC1131" class="line" lang="haskell"></span>
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1132
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<pre style="margin: 0;">+<span id="LC1132" class="line" lang="haskell"><span class="n" style="color: #333;">addArgWrap</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">HsWrapper</span> <span class="o" style="font-weight: 600;">-></span> <span class="p">[</span><span class="kt" style="color: #458; font-weight: 600;">LHsExprArgOut</span><span class="p">]</span> <span class="o" style="font-weight: 600;">-></span> <span class="p">[</span><span class="kt" style="color: #458; font-weight: 600;">LHsExprArgOut</span><span class="p">]</span></span>
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1133
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<pre style="margin: 0;">+<span id="LC1133" class="line" lang="haskell"><span class="n" style="color: #333;">addArgWrap</span> <span class="n" style="color: #333;">wrap</span> <span class="n" style="color: #333;">args</span></span>
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1134
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<pre style="margin: 0;">+<span id="LC1134" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">|</span> <span class="n" style="color: #333;">isIdHsWrapper</span> <span class="n" style="color: #333;">wrap</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">args</span></span>
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1135
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<pre style="margin: 0;">+<span id="LC1135" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">|</span> <span class="n" style="color: #333;">otherwise</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">HsArgWrap</span> <span class="n" style="color: #333;">wrap</span> <span class="o" style="font-weight: 600;">:</span> <span class="n" style="color: #333;">args</span></span>
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1136
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<pre style="margin: 0;">+<span id="LC1136" class="line" lang="haskell"></span>
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1137
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<pre style="margin: 0;">+<span id="LC1137" class="line" lang="haskell"><span class="n" style="color: #333;">wrapHsArgs</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">LHsExpr</span> <span class="kt" style="color: #458; font-weight: 600;">GhcTc</span> <span class="o" style="font-weight: 600;">-></span> <span class="p">[</span><span class="kt" style="color: #458; font-weight: 600;">LHsExprArgOut</span><span class="p">]</span><span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">LHsExpr</span> <span class="kt" style="color: #458; font-weight: 600;">GhcTc</span></span>
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1138
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<pre style="margin: 0;">+<span id="LC1138" class="line" lang="haskell"><span class="n" style="color: #333;">wrapHsArgs</span> <span class="n" style="color: #333;">fun</span> <span class="n" style="color: #333;">args</span></span>
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1139
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<pre style="margin: 0;">+<span id="LC1139" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">go</span> <span class="n" style="color: #333;">fun</span> <span class="n" style="color: #333;">args</span></span>
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1140
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<pre style="margin: 0;">+<span id="LC1140" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">where</span></span>
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1141
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<pre style="margin: 0;">+<span id="LC1141" class="line" lang="haskell"> <span class="n" style="color: #333;">go</span> <span class="n" style="color: #333;">fun</span> <span class="kt" style="color: #458; font-weight: 600;">[]</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">fun</span></span>
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1142
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<pre style="margin: 0;">+<span id="LC1142" class="line" lang="haskell"> <span class="n" style="color: #333;">go</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">L</span> <span class="n" style="color: #333;">l</span> <span class="n" style="color: #333;">fun</span><span class="p">)</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">HsArgWrap</span> <span class="n" style="color: #333;">wrap</span> <span class="o" style="font-weight: 600;">:</span> <span class="n" style="color: #333;">args</span><span class="p">)</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">go</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">L</span> <span class="n" style="color: #333;">l</span> <span class="o" style="font-weight: 600;">$</span> <span class="n" style="color: #333;">mkHsWrap</span> <span class="n" style="color: #333;">wrap</span> <span class="n" style="color: #333;">fun</span><span class="p">)</span> <span class="n" style="color: #333;">args</span></span>
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<td class="diff-line-num new new_line" data-linenumber="1143" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
1143
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<pre style="margin: 0;">+<span id="LC1143" class="line" lang="haskell"> <span class="n" style="color: #333;">go</span> <span class="n" style="color: #333;">fun</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">HsExprValArg</span> <span class="n" style="color: #333;">l</span> <span class="n" style="color: #333;">arg</span> <span class="o" style="font-weight: 600;">:</span> <span class="n" style="color: #333;">args</span><span class="p">)</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">go</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">L</span> <span class="n" style="color: #333;">l</span> <span class="o" style="font-weight: 600;">$</span> <span class="kt" style="color: #458; font-weight: 600;">HsApp</span> <span class="n" style="color: #333;">noExtField</span> <span class="n" style="color: #333;">fun</span> <span class="n" style="color: #333;">arg</span><span class="p">)</span> <span class="n" style="color: #333;">args</span></span>
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1144
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<pre style="margin: 0;">+<span id="LC1144" class="line" lang="haskell"> <span class="n" style="color: #333;">go</span> <span class="n" style="color: #333;">fun</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">HsExprTypeArg</span> <span class="n" style="color: #333;">l</span> <span class="n" style="color: #333;">hs_ty</span> <span class="n" style="color: #333;">ty</span> <span class="o" style="font-weight: 600;">:</span> <span class="n" style="color: #333;">args</span><span class="p">)</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">go</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">L</span> <span class="n" style="color: #333;">l</span> <span class="o" style="font-weight: 600;">$</span> <span class="kt" style="color: #458; font-weight: 600;">HsAppType</span> <span class="n" style="color: #333;">ty</span> <span class="n" style="color: #333;">fun</span> <span class="n" style="color: #333;">hs_ty</span><span class="p">)</span> <span class="n" style="color: #333;">args</span></span>
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1145
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<pre style="margin: 0;">+<span id="LC1145" class="line" lang="haskell"> <span class="n" style="color: #333;">go</span> <span class="n" style="color: #333;">fun</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">HsExprPar</span> <span class="n" style="color: #333;">l</span> <span class="o" style="font-weight: 600;">:</span> <span class="n" style="color: #333;">args</span><span class="p">)</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">go</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">L</span> <span class="n" style="color: #333;">l</span> <span class="o" style="font-weight: 600;">$</span> <span class="kt" style="color: #458; font-weight: 600;">HsPar</span> <span class="n" style="color: #333;">noExtField</span> <span class="n" style="color: #333;">fun</span><span class="p">)</span> <span class="n" style="color: #333;">args</span></span>
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1146
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<pre style="margin: 0;">+<span id="LC1146" class="line" lang="haskell"></span>
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1147
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<pre style="margin: 0;">+<span id="LC1147" class="line" lang="haskell"><span class="n" style="color: #333;">collectHsArgs</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">LHsExpr</span> <span class="kt" style="color: #458; font-weight: 600;">GhcRn</span> <span class="o" style="font-weight: 600;">-></span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">LHsExpr</span> <span class="kt" style="color: #458; font-weight: 600;">GhcRn</span><span class="p">,</span> <span class="p">[</span><span class="kt" style="color: #458; font-weight: 600;">LHsExprArgIn</span><span class="p">])</span></span>
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1148
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<pre style="margin: 0;">+<span id="LC1148" class="line" lang="haskell"><span class="n" style="color: #333;">collectHsArgs</span> <span class="n" style="color: #333;">e</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">go</span> <span class="n" style="color: #333;">e</span> <span class="kt" style="color: #458; font-weight: 600;">[]</span></span>
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1149
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<pre style="margin: 0;">+<span id="LC1149" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">where</span></span>
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1150
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<pre style="margin: 0;">+<span id="LC1150" class="line" lang="haskell"> <span class="n" style="color: #333;">go</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">L</span> <span class="n" style="color: #333;">l</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">HsPar</span> <span class="kr" style="font-weight: 600;">_</span> <span class="n" style="color: #333;">fun</span><span class="p">))</span> <span class="n" style="color: #333;">args</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">go</span> <span class="n" style="color: #333;">fun</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">HsExprPar</span> <span class="n" style="color: #333;">l</span> <span class="o" style="font-weight: 600;">:</span> <span class="n" style="color: #333;">args</span><span class="p">)</span></span>
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1151
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<pre style="margin: 0;">+<span id="LC1151" class="line" lang="haskell"> <span class="n" style="color: #333;">go</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">L</span> <span class="n" style="color: #333;">l</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">HsApp</span> <span class="kr" style="font-weight: 600;">_</span> <span class="n" style="color: #333;">fun</span> <span class="n" style="color: #333;">arg</span><span class="p">))</span> <span class="n" style="color: #333;">args</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">go</span> <span class="n" style="color: #333;">fun</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">HsExprValArg</span> <span class="n" style="color: #333;">l</span> <span class="n" style="color: #333;">arg</span> <span class="o" style="font-weight: 600;">:</span> <span class="n" style="color: #333;">args</span><span class="p">)</span></span>
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1152
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<pre style="margin: 0;">+<span id="LC1152" class="line" lang="haskell"> <span class="n" style="color: #333;">go</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">L</span> <span class="n" style="color: #333;">l</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">HsAppType</span> <span class="kr" style="font-weight: 600;">_</span> <span class="n" style="color: #333;">fun</span> <span class="n" style="color: #333;">hs_ty</span><span class="p">))</span> <span class="n" style="color: #333;">args</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">go</span> <span class="n" style="color: #333;">fun</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">HsExprTypeArg</span> <span class="n" style="color: #333;">l</span> <span class="n" style="color: #333;">hs_ty</span> <span class="n" style="color: #333;">noExtField</span> <span class="o" style="font-weight: 600;">:</span> <span class="n" style="color: #333;">args</span><span class="p">)</span></span>
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1153
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<pre style="margin: 0;">+<span id="LC1153" class="line" lang="haskell"> <span class="n" style="color: #333;">go</span> <span class="n" style="color: #333;">e</span> <span class="n" style="color: #333;">args</span> <span class="o" style="font-weight: 600;">=</span> <span class="p">(</span><span class="n" style="color: #333;">e</span><span class="p">,</span><span class="n" style="color: #333;">args</span><span class="p">)</span></span>
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1154
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<pre style="margin: 0;">+<span id="LC1154" class="line" lang="haskell"></span>
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1155
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<pre style="margin: 0;">+<span id="LC1155" class="line" lang="haskell"><span class="n" style="color: #333;">isHsValArg</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">HsExprArg</span> <span class="n" style="color: #333;">id</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Bool</span></span>
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1156
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<pre style="margin: 0;">+<span id="LC1156" class="line" lang="haskell"><span class="n" style="color: #333;">isHsValArg</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">HsExprValArg</span> <span class="p">{})</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">True</span></span>
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1157
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<pre style="margin: 0;">+<span id="LC1157" class="line" lang="haskell"><span class="n" style="color: #333;">isHsValArg</span> <span class="kr" style="font-weight: 600;">_</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">False</span></span>
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1158
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<pre style="margin: 0;">+<span id="LC1158" class="line" lang="haskell"></span>
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1159
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<pre style="margin: 0;">+<span id="LC1159" class="line" lang="haskell"><span class="n" style="color: #333;">isArgPar</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">HsExprArg</span> <span class="n" style="color: #333;">id</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Bool</span></span>
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1160
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<pre style="margin: 0;">+<span id="LC1160" class="line" lang="haskell"><span class="n" style="color: #333;">isArgPar</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">HsExprPar</span> <span class="p">{})</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">True</span></span>
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1161
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<pre style="margin: 0;">+<span id="LC1161" class="line" lang="haskell"><span class="n" style="color: #333;">isArgPar</span> <span class="kr" style="font-weight: 600;">_</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">False</span></span>
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1162
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<pre style="margin: 0;">+<span id="LC1162" class="line" lang="haskell"></span>
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1163
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<pre style="margin: 0;">+<span id="LC1163" class="line" lang="haskell"><span class="n" style="color: #333;">tcApp</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">HsExpr</span> <span class="kt" style="color: #458; font-weight: 600;">GhcRn</span> <span class="c1" style="color: #998; font-style: italic;">-- either HsApp or HsAppType</span></span>
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1164
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<pre style="margin: 0;">+<span id="LC1164" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">ExpRhoType</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TcM</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">HsExpr</span> <span class="kt" style="color: #458; font-weight: 600;">GhcTc</span><span class="p">)</span></span>
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1165
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<pre style="margin: 0;">+<span id="LC1165" class="line" lang="haskell"><span class="n" style="color: #333;">tcApp</span> <span class="n" style="color: #333;">expr</span> <span class="n" style="color: #333;">res_ty</span></span>
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1166
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<pre style="margin: 0;">+<span id="LC1166" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">do</span> <span class="p">{</span> <span class="p">(</span><span class="n" style="color: #333;">fun</span><span class="p">,</span> <span class="n" style="color: #333;">args</span><span class="p">,</span> <span class="n" style="color: #333;">app_res_ty</span><span class="p">)</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">tcInferApp</span> <span class="p">(</span><span class="n" style="color: #333;">noLoc</span> <span class="n" style="color: #333;">expr</span><span class="p">)</span></span>
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1167
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<pre style="margin: 0;">+<span id="LC1167" class="line" lang="haskell"> <span class="p">;</span> <span class="kr" style="font-weight: 600;">if</span> <span class="n" style="color: #333;">isTagToEnum</span> <span class="n" style="color: #333;">fun</span></span>
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1168
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<pre style="margin: 0;">+<span id="LC1168" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">then</span> <span class="n" style="color: #333;">tcTagToEnum</span> <span class="n" style="color: #333;">expr</span> <span class="n" style="color: #333;">fun</span> <span class="n" style="color: #333;">args</span> <span class="n" style="color: #333;">app_res_ty</span> <span class="n" style="color: #333;">res_ty</span></span>
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1169
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<pre style="margin: 0;">+<span id="LC1169" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">else</span></span>
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1170
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<pre style="margin: 0;">+<span id="LC1170" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">do</span> <span class="p">{</span> <span class="kr" style="font-weight: 600;">let</span> <span class="n" style="color: #333;">expr'</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">wrapHsArgs</span> <span class="n" style="color: #333;">fun</span> <span class="n" style="color: #333;">args</span></span>
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1171
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<pre style="margin: 0;">+<span id="LC1171" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">addFunResCtxt</span> <span class="kt" style="color: #458; font-weight: 600;">True</span> <span class="p">(</span><span class="n" style="color: #333;">unLoc</span> <span class="n" style="color: #333;">fun</span><span class="p">)</span> <span class="n" style="color: #333;">app_res_ty</span> <span class="n" style="color: #333;">res_ty</span> <span class="o" style="font-weight: 600;">$</span></span>
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1172
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<pre style="margin: 0;">+<span id="LC1172" class="line" lang="haskell"> <span class="n" style="color: #333;">tcWrapResult</span> <span class="n" style="color: #333;">expr</span> <span class="p">(</span><span class="n" style="color: #333;">unLoc</span> <span class="n" style="color: #333;">expr'</span><span class="p">)</span> <span class="n" style="color: #333;">app_res_ty</span> <span class="n" style="color: #333;">res_ty</span> <span class="p">}</span> <span class="p">}</span></span>
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1173
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<pre style="margin: 0;">+<span id="LC1173" class="line" lang="haskell"></span>
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1174
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<pre style="margin: 0;">+<span id="LC1174" class="line" lang="haskell"><span class="n" style="color: #333;">tcInferApp</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">LHsExpr</span> <span class="kt" style="color: #458; font-weight: 600;">GhcRn</span></span>
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1175
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<pre style="margin: 0;">+<span id="LC1175" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TcM</span> <span class="p">(</span> <span class="kt" style="color: #458; font-weight: 600;">LHsExpr</span> <span class="kt" style="color: #458; font-weight: 600;">GhcTc</span> <span class="c1" style="color: #998; font-style: italic;">-- Function</span></span>
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<td class="diff-line-num new new_line" data-linenumber="1176" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
1176
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<pre style="margin: 0;">+<span id="LC1176" class="line" lang="haskell"> <span class="p">,</span> <span class="p">[</span><span class="kt" style="color: #458; font-weight: 600;">LHsExprArgOut</span><span class="p">]</span> <span class="c1" style="color: #998; font-style: italic;">-- Arguments</span></span>
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<td class="diff-line-num new new_line" data-linenumber="1177" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
1177
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<pre style="margin: 0;">+<span id="LC1177" class="line" lang="haskell"> <span class="p">,</span> <span class="kt" style="color: #458; font-weight: 600;">TcSigmaType</span><span class="p">)</span> <span class="c1" style="color: #998; font-style: italic;">-- Inferred type: a sigma-type!</span></span>
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1178
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<pre style="margin: 0;">+<span id="LC1178" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- Also used by Module.tcRnExpr to implement GHCi :type</span></span>
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1179
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<pre style="margin: 0;">+<span id="LC1179" class="line" lang="haskell"><span class="n" style="color: #333;">tcInferApp</span> <span class="n" style="color: #333;">expr</span></span>
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1180
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<pre style="margin: 0;">+<span id="LC1180" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">|</span> <span class="c1" style="color: #998; font-style: italic;">-- Gruesome special case for ambiguous record selectors</span></span>
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1181
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<pre style="margin: 0;">+<span id="LC1181" class="line" lang="haskell"> <span class="kt" style="color: #458; font-weight: 600;">L</span> <span class="n" style="color: #333;">loc</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">HsRecFld</span> <span class="kr" style="font-weight: 600;">_</span> <span class="n" style="color: #333;">fld_lbl</span><span class="p">)</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">fun</span></span>
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<td class="diff-line-num new new_line" data-linenumber="1182" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
1182
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<pre style="margin: 0;">+<span id="LC1182" class="line" lang="haskell"> <span class="p">,</span> <span class="kt" style="color: #458; font-weight: 600;">Ambiguous</span> <span class="kr" style="font-weight: 600;">_</span> <span class="n" style="color: #333;">lbl</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">fld_lbl</span> <span class="c1" style="color: #998; font-style: italic;">-- Still ambiguous</span></span>
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1183
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<pre style="margin: 0;">+<span id="LC1183" class="line" lang="haskell"> <span class="p">,</span> <span class="kt" style="color: #458; font-weight: 600;">HsExprValArg</span> <span class="kr" style="font-weight: 600;">_</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">L</span> <span class="kr" style="font-weight: 600;">_</span> <span class="n" style="color: #333;">arg</span><span class="p">)</span> <span class="o" style="font-weight: 600;">:</span> <span class="kr" style="font-weight: 600;">_</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">filterOut</span> <span class="n" style="color: #333;">isArgPar</span> <span class="n" style="color: #333;">args</span> <span class="c1" style="color: #998; font-style: italic;">-- A value arg is first</span></span>
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<td class="diff-line-num new new_line" data-linenumber="1184" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
1184
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<pre style="margin: 0;">+<span id="LC1184" class="line" lang="haskell"> <span class="p">,</span> <span class="kt" style="color: #458; font-weight: 600;">Just</span> <span class="n" style="color: #333;">sig_ty</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">obviousSig</span> <span class="n" style="color: #333;">arg</span> <span class="c1" style="color: #998; font-style: italic;">-- A type sig on the arg disambiguates</span></span>
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1133
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1185
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<pre style="margin: 0;"> <span id="LC1185" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">do</span> <span class="p">{</span> <span class="n" style="color: #333;">sig_tc_ty</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">tcHsSigWcType</span> <span class="kt" style="color: #458; font-weight: 600;">ExprSigCtxt</span> <span class="n" style="color: #333;">sig_ty</span></span>
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1134
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1186
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<pre style="margin: 0;"> <span id="LC1186" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">sel_name</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">disambiguateSelector</span> <span class="n" style="color: #333;">lbl</span> <span class="n" style="color: #333;">sig_tc_ty</span></span>
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1135
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<td class="diff-line-num new_line" data-linenumber="1187" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">
1187
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<pre style="margin: 0;"> <span id="LC1187" class="line" lang="haskell"> <span class="p">;</span> <span class="p">(</span><span class="n" style="color: #333;">tc_fun</span><span class="p">,</span> <span class="n" style="color: #333;">fun_ty</span><span class="p">)</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">tcInferRecSelId</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Unambiguous</span> <span class="n" style="color: #333;">sel_name</span> <span class="n" style="color: #333;">lbl</span><span class="p">)</span></span>
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1136
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<td class="diff-line-num new_line old" data-linenumber="1188" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">
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<pre style="margin: 0;">-<span id="LC1136" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">tcFunApp</span> <span class="n" style="color: #333;">m_herald</span> <span class="n" style="color: #333;">fun</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">L</span> <span class="n" style="color: #333;">loc</span> <span class="n" style="color: #333;">tc_fun</span><span class="p">)</span> <span class="n" style="color: #333;">fun_ty</span> <span class="n" style="color: #333;">args</span> <span class="n" style="color: #333;">res_ty</span> <span class="p">}</span></span>
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1137
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<pre style="margin: 0;">-<span id="LC1137" class="line" lang="haskell"></span>
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<pre style="margin: 0;">-<span id="LC1138" class="line" lang="haskell"><span class="n" style="color: #333;">tcApp</span> <span class="n" style="color: #333;">_m_herald</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">L</span> <span class="n" style="color: #333;">loc</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">HsVar</span> <span class="kr" style="font-weight: 600;">_</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">L</span> <span class="kr" style="font-weight: 600;">_</span> <span class="n" style="color: #333;">fun_id</span><span class="p">)))</span> <span class="n" style="color: #333;">args</span> <span class="n" style="color: #333;">res_ty</span></span>
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1139
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<pre style="margin: 0;">-<span id="LC1139" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- Special typing rule for tagToEnum#</span></span>
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1140
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<pre style="margin: 0;">-<span id="LC1140" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">|</span> <span class="n" style="color: #333;">fun_id</span> <span class="p">`</span><span class="n" style="color: #333;">hasKey</span><span class="p">`</span> <span class="n" style="color: #333;">tagToEnumKey</span></span>
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1141
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<pre style="margin: 0;">-<span id="LC1141" class="line" lang="haskell"> <span class="p">,</span> <span class="n" style="color: #333;">n_val_args</span> <span class="o" style="font-weight: 600;">==</span> <span class="mi" style="color: #099;">1</span></span>
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1142
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<pre style="margin: 0;">-<span id="LC1142" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">tcTagToEnum</span> <span class="n" style="color: #333;">loc</span> <span class="n" style="color: #333;">fun_id</span> <span class="n" style="color: #333;">args</span> <span class="n" style="color: #333;">res_ty</span></span>
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1143
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<pre style="margin: 0;">-<span id="LC1143" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">where</span></span>
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1144
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<pre style="margin: 0;">-<span id="LC1144" class="line" lang="haskell"> <span class="n" style="color: #333;">n_val_args</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">count</span> <span class="n" style="color: #333;">isHsValArg</span> <span class="n" style="color: #333;">args</span></span>
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1188
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<pre style="margin: 0;">+<span id="LC1188" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">tcInferApp_finish</span> <span class="n" style="color: #333;">fun</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">L</span> <span class="n" style="color: #333;">loc</span> <span class="n" style="color: #333;">tc_fun</span><span class="p">)</span> <span class="n" style="color: #333;">fun_ty</span> <span class="n" style="color: #333;">args</span> <span class="p">}</span></span>
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1145
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1189
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<pre style="margin: 0;"> <span id="LC1189" class="line" lang="haskell"></span>
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1146
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<pre style="margin: 0;">-<span id="LC1146" class="line" lang="haskell"><span class="n" style="color: #333;"><span class="idiff left">tcApp</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">m_herald</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">fun</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">args</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff right">res_ty</span></span></span>
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1190
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<pre style="margin: 0;">+<span id="LC1190" class="line" lang="haskell"><span class="idiff left"> </span><span class="o" style="font-weight: 600;"><span class="idiff">|</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff right">otherwise</span></span></span>
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1147
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1191
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<pre style="margin: 0;"> <span id="LC1191" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">do</span> <span class="p">{</span> <span class="p">(</span><span class="n" style="color: #333;">tc_fun</span><span class="p">,</span> <span class="n" style="color: #333;">fun_ty</span><span class="p">)</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">tcInferAppHead</span> <span class="n" style="color: #333;">fun</span></span>
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1148
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<pre style="margin: 0;">-<span id="LC1148" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">tcFunApp</span> <span class="n" style="color: #333;">m_herald</span> <span class="n" style="color: #333;">fun</span> <span class="n" style="color: #333;">tc_fun</span> <span class="n" style="color: #333;">fun_ty</span> <span class="n" style="color: #333;">args</span> <span class="n" style="color: #333;">res_ty</span> <span class="p">}</span></span>
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1192
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<pre style="margin: 0;">+<span id="LC1192" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">tcInferApp_finish</span> <span class="n" style="color: #333;">fun</span> <span class="n" style="color: #333;">tc_fun</span> <span class="n" style="color: #333;">fun_ty</span> <span class="n" style="color: #333;">args</span> <span class="p">}</span></span>
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1193
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<pre style="margin: 0;">+<span id="LC1193" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">where</span></span>
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1194
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<pre style="margin: 0;">+<span id="LC1194" class="line" lang="haskell"> <span class="p">(</span><span class="n" style="color: #333;">fun</span><span class="p">,</span> <span class="n" style="color: #333;">args</span><span class="p">)</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">collectHsArgs</span> <span class="n" style="color: #333;">expr</span></span>
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1149
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1195
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<pre style="margin: 0;"> <span id="LC1195" class="line" lang="haskell"></span>
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1150
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1196
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<pre style="margin: 0;"> <span id="LC1196" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">---------------------</span></span>
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1151
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<pre style="margin: 0;">-<span id="LC1151" class="line" lang="haskell"><span class="n" style="color: #333;">tcFunApp</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">Maybe</span> <span class="kt" style="color: #458; font-weight: 600;">SDoc</span> <span class="c1" style="color: #998; font-style: italic;">-- like "The function `f' is applied to"</span></span>
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1152
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<pre style="margin: 0;">-<span id="LC1152" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- or leave out to get exactly that message</span></span>
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1153
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<pre style="margin: 0;">-<span id="LC1153" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">LHsExpr</span> <span class="kt" style="color: #458; font-weight: 600;">GhcRn</span> <span class="c1" style="color: #998; font-style: italic;">-- Renamed function</span></span>
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1154
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<td class="diff-line-num new_line old" data-linenumber="1197" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">
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<pre style="margin: 0;">-<span id="LC1154" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">LHsExpr</span> <span class="kt" style="color: #458; font-weight: 600;">GhcTcId</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TcSigmaType</span> <span class="c1" style="color: #998; font-style: italic;">-- Function and its type</span></span>
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<td class="diff-line-num old old_line" data-linenumber="1155" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">
1155
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<td class="diff-line-num new_line old" data-linenumber="1197" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">
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<pre style="margin: 0;">-<span id="LC1155" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">-></span> <span class="p">[</span><span class="kt" style="color: #458; font-weight: 600;">LHsExprArgIn</span><span class="p">]</span> <span class="c1" style="color: #998; font-style: italic;">-- Arguments</span></span>
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<td class="diff-line-num old old_line" data-linenumber="1156" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">
1156
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<td class="diff-line-num new_line old" data-linenumber="1197" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">
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<pre style="margin: 0;">-<span id="LC1156" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">ExpRhoType</span> <span class="c1" style="color: #998; font-style: italic;">-- Overall result type</span></span>
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1157
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<pre style="margin: 0;">-<span id="LC1157" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TcM</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">HsWrapper</span><span class="p">,</span> <span class="kt" style="color: #458; font-weight: 600;">LHsExpr</span> <span class="kt" style="color: #458; font-weight: 600;">GhcTcId</span><span class="p">,</span> <span class="p">[</span><span class="kt" style="color: #458; font-weight: 600;">LHsExprArgOut</span><span class="p">])</span></span>
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1158
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<td class="diff-line-num new_line old" data-linenumber="1197" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">
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<pre style="margin: 0;">-<span id="LC1158" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- (wrapper-for-result, fun, args)</span></span>
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1159
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<td class="diff-line-num new_line old" data-linenumber="1197" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">
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<pre style="margin: 0;">-<span id="LC1159" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- For an ordinary function application,</span></span>
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1160
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<td class="diff-line-num new_line old" data-linenumber="1197" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">
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<pre style="margin: 0;">-<span id="LC1160" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- these should be assembled as wrap_res[ fun args ]</span></span>
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1161
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<td class="diff-line-num new_line old" data-linenumber="1197" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">
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<pre style="margin: 0;">-<span id="LC1161" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- But OpApp is slightly different, so that's why the caller</span></span>
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1162
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<td class="diff-line-num new_line old" data-linenumber="1197" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">
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<pre style="margin: 0;">-<span id="LC1162" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- must assemble</span></span>
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1163
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<td class="diff-line-num new_line old" data-linenumber="1197" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">
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<pre style="margin: 0;">-<span id="LC1163" class="line" lang="haskell"></span>
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1164
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<td class="diff-line-num new_line old" data-linenumber="1197" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">
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<pre style="margin: 0;">-<span id="LC1164" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- tcFunApp deals with the general case;</span></span>
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1165
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<td class="diff-line-num new_line old" data-linenumber="1197" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">
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<pre style="margin: 0;">-<span id="LC1165" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- the special cases are handled by tcApp</span></span>
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1166
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<pre style="margin: 0;">-<span id="LC1166" class="line" lang="haskell"><span class="n" style="color: #333;">tcFunApp</span> <span class="n" style="color: #333;">m_herald</span> <span class="n" style="color: #333;">rn_fun</span> <span class="n" style="color: #333;">tc_fun</span> <span class="n" style="color: #333;">fun_sigma</span> <span class="n" style="color: #333;">rn_args</span> <span class="n" style="color: #333;">res_ty</span></span>
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<td class="diff-line-num old old_line" data-linenumber="1167" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">
1167
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<td class="diff-line-num new_line old" data-linenumber="1197" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">
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<pre style="margin: 0;">-<span id="LC1167" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">do</span> <span class="p">{</span> <span class="kr" style="font-weight: 600;">let</span> <span class="n" style="color: #333;">orig</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">lexprCtOrigin</span> <span class="n" style="color: #333;">rn_fun</span></span>
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1168
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<td class="diff-line-num new_line old" data-linenumber="1197" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">
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<pre style="margin: 0;">-<span id="LC1168" class="line" lang="haskell"></span>
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1169
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<pre style="margin: 0;">-<span id="LC1169" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">traceTc</span> <span class="s" style="color: #d14;">"tcFunApp"</span> <span class="p">(</span><span class="n" style="color: #333;">ppr</span> <span class="n" style="color: #333;">rn_fun</span> <span class="o" style="font-weight: 600;"><+></span> <span class="n" style="color: #333;">dcolon</span> <span class="o" style="font-weight: 600;"><+></span> <span class="n" style="color: #333;">ppr</span> <span class="n" style="color: #333;">fun_sigma</span> <span class="o" style="font-weight: 600;">$$</span> <span class="n" style="color: #333;">ppr</span> <span class="n" style="color: #333;">rn_args</span> <span class="o" style="font-weight: 600;">$$</span> <span class="n" style="color: #333;">ppr</span> <span class="n" style="color: #333;">res_ty</span><span class="p">)</span></span>
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1170
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<pre style="margin: 0;">-<span id="LC1170" class="line" lang="haskell"> <span class="p">;</span> <span class="p">(</span><span class="n" style="color: #333;">wrap_fun</span><span class="p">,</span> <span class="n" style="color: #333;">tc_args</span><span class="p">,</span> <span class="n" style="color: #333;">actual_res_ty</span><span class="p">)</span></span>
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1171
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<pre style="margin: 0;">-<span id="LC1171" class="line" lang="haskell"> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">tcArgs</span> <span class="n" style="color: #333;">rn_fun</span> <span class="n" style="color: #333;">fun_sigma</span> <span class="n" style="color: #333;">orig</span> <span class="n" style="color: #333;">rn_args</span></span>
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<td class="diff-line-num old old_line" data-linenumber="1172" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">
1172
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<pre style="margin: 0;">-<span id="LC1172" class="line" lang="haskell"> <span class="p">(</span><span class="n" style="color: #333;">m_herald</span> <span class="p">`</span><span class="n" style="color: #333;">orElse</span><span class="p">`</span> <span class="n" style="color: #333;">mk_app_msg</span> <span class="n" style="color: #333;">rn_fun</span> <span class="n" style="color: #333;">rn_args</span><span class="p">)</span></span>
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1173
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<pre style="margin: 0;">-<span id="LC1173" class="line" lang="haskell"></span>
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1174
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<pre style="margin: 0;">-<span id="LC1174" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- this is just like tcWrapResult, but the types don't line</span></span>
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1175
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<pre style="margin: 0;">-<span id="LC1175" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- up to call that function</span></span>
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1176
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<pre style="margin: 0;">-<span id="LC1176" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">wrap_res</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">addFunResCtxt</span> <span class="kt" style="color: #458; font-weight: 600;">True</span> <span class="p">(</span><span class="n" style="color: #333;">unLoc</span> <span class="n" style="color: #333;">rn_fun</span><span class="p">)</span> <span class="n" style="color: #333;">actual_res_ty</span> <span class="n" style="color: #333;">res_ty</span> <span class="o" style="font-weight: 600;">$</span></span>
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1177
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<pre style="margin: 0;">-<span id="LC1177" class="line" lang="haskell"> <span class="n" style="color: #333;">tcSubTypeDS_NC_O</span> <span class="n" style="color: #333;">orig</span> <span class="kt" style="color: #458; font-weight: 600;">GenSigCtxt</span></span>
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1178
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<pre style="margin: 0;">-<span id="LC1178" class="line" lang="haskell"> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Just</span> <span class="o" style="font-weight: 600;">$</span> <span class="n" style="color: #333;">unLoc</span> <span class="o" style="font-weight: 600;">$</span> <span class="n" style="color: #333;">wrapHsArgs</span> <span class="n" style="color: #333;">rn_fun</span> <span class="n" style="color: #333;">rn_args</span><span class="p">)</span></span>
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1179
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<pre style="margin: 0;">-<span id="LC1179" class="line" lang="haskell"> <span class="n" style="color: #333;">actual_res_ty</span> <span class="n" style="color: #333;">res_ty</span></span>
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1180
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<pre style="margin: 0;">-<span id="LC1180" class="line" lang="haskell"></span>
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1181
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<pre style="margin: 0;">-<span id="LC1181" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">return</span> <span class="p">(</span><span class="n" style="color: #333;">wrap_res</span><span class="p">,</span> <span class="n" style="color: #333;">mkLHsWrap</span> <span class="n" style="color: #333;">wrap_fun</span> <span class="n" style="color: #333;">tc_fun</span><span class="p">,</span> <span class="n" style="color: #333;">tc_args</span><span class="p">)</span> <span class="p">}</span></span>
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1197
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<pre style="margin: 0;">+<span id="LC1197" class="line" lang="haskell"><span class="n" style="color: #333;">tcInferApp_finish</span></span>
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1198
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<pre style="margin: 0;">+<span id="LC1198" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">LHsExpr</span> <span class="kt" style="color: #458; font-weight: 600;">GhcRn</span> <span class="c1" style="color: #998; font-style: italic;">-- Renamed function</span></span>
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1199
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<pre style="margin: 0;">+<span id="LC1199" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">LHsExpr</span> <span class="kt" style="color: #458; font-weight: 600;">GhcTc</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TcSigmaType</span> <span class="c1" style="color: #998; font-style: italic;">-- Function and its type</span></span>
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1200
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<pre style="margin: 0;">+<span id="LC1200" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">-></span> <span class="p">[</span><span class="kt" style="color: #458; font-weight: 600;">LHsExprArgIn</span><span class="p">]</span> <span class="c1" style="color: #998; font-style: italic;">-- Arguments</span></span>
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1201
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<pre style="margin: 0;">+<span id="LC1201" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TcM</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">LHsExpr</span> <span class="kt" style="color: #458; font-weight: 600;">GhcTc</span><span class="p">,</span> <span class="p">[</span><span class="kt" style="color: #458; font-weight: 600;">LHsExprArgOut</span><span class="p">],</span> <span class="kt" style="color: #458; font-weight: 600;">TcSigmaType</span><span class="p">)</span></span>
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1202
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<pre style="margin: 0;">+<span id="LC1202" class="line" lang="haskell"></span>
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1203
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<pre style="margin: 0;">+<span id="LC1203" class="line" lang="haskell"><span class="n" style="color: #333;">tcInferApp_finish</span> <span class="n" style="color: #333;">rn_fun</span> <span class="n" style="color: #333;">tc_fun</span> <span class="n" style="color: #333;">fun_sigma</span> <span class="n" style="color: #333;">rn_args</span></span>
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<td class="diff-line-num new new_line" data-linenumber="1204" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
1204
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<pre style="margin: 0;">+<span id="LC1204" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">do</span> <span class="p">{</span> <span class="n" style="color: #333;">traceTc</span> <span class="s" style="color: #d14;">"tcInferApp_finish"</span> <span class="o" style="font-weight: 600;">$</span></span>
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1205
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<pre style="margin: 0;">+<span id="LC1205" class="line" lang="haskell"> <span class="n" style="color: #333;">vcat</span> <span class="p">[</span> <span class="n" style="color: #333;">ppr</span> <span class="n" style="color: #333;">rn_fun</span> <span class="o" style="font-weight: 600;"><+></span> <span class="n" style="color: #333;">dcolon</span> <span class="o" style="font-weight: 600;"><+></span> <span class="n" style="color: #333;">ppr</span> <span class="n" style="color: #333;">fun_sigma</span><span class="p">,</span> <span class="n" style="color: #333;">ppr</span> <span class="n" style="color: #333;">rn_args</span> <span class="p">]</span></span>
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1206
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<pre style="margin: 0;">+<span id="LC1206" class="line" lang="haskell"></span>
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1207
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<pre style="margin: 0;">+<span id="LC1207" class="line" lang="haskell"> <span class="p">;</span> <span class="p">(</span><span class="n" style="color: #333;">tc_args</span><span class="p">,</span> <span class="n" style="color: #333;">actual_res_ty</span><span class="p">)</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">tcArgs</span> <span class="n" style="color: #333;">rn_fun</span> <span class="n" style="color: #333;">fun_sigma</span> <span class="n" style="color: #333;">rn_args</span></span>
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1208
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<pre style="margin: 0;">+<span id="LC1208" class="line" lang="haskell"></span>
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1209
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<pre style="margin: 0;">+<span id="LC1209" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">return</span> <span class="p">(</span><span class="n" style="color: #333;">tc_fun</span><span class="p">,</span> <span class="n" style="color: #333;">tc_args</span><span class="p">,</span> <span class="n" style="color: #333;">actual_res_ty</span><span class="p">)</span> <span class="p">}</span></span>
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1182
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1210
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<pre style="margin: 0;"> <span id="LC1210" class="line" lang="haskell"></span>
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1183
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1211
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<pre style="margin: 0;"> <span id="LC1211" class="line" lang="haskell"><span class="n" style="color: #333;">mk_app_msg</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">LHsExpr</span> <span class="kt" style="color: #458; font-weight: 600;">GhcRn</span> <span class="o" style="font-weight: 600;">-></span> <span class="p">[</span><span class="kt" style="color: #458; font-weight: 600;">LHsExprArgIn</span><span class="p">]</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">SDoc</span></span>
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1184
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1212
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<pre style="margin: 0;"> <span id="LC1212" class="line" lang="haskell"><span class="n" style="color: #333;">mk_app_msg</span> <span class="n" style="color: #333;">fun</span> <span class="n" style="color: #333;">args</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">sep</span> <span class="p">[</span> <span class="n" style="color: #333;">text</span> <span class="s" style="color: #d14;">"The"</span> <span class="o" style="font-weight: 600;"><+></span> <span class="n" style="color: #333;">text</span> <span class="n" style="color: #333;">what</span> <span class="o" style="font-weight: 600;"><+></span> <span class="n" style="color: #333;">quotes</span> <span class="p">(</span><span class="n" style="color: #333;">ppr</span> <span class="n" style="color: #333;">expr</span><span class="p">)</span></span>
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<td class="diff-line-num unfold js-unfold old_line" data-linenumber="1189" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>
<td class="diff-line-num unfold js-unfold new_line" data-linenumber="1217" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>
<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -1189,26 +1217,32 @@ mk_app_msg fun args = sep [ text "The" <+> text what <+> quotes (ppr expr)</td>
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1189
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1217
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<pre style="margin: 0;"> <span id="LC1217" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- Include visible type arguments (but not other arguments) in the herald.</span></span>
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1190
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1218
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<pre style="margin: 0;"> <span id="LC1218" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- See Note [Herald for matchExpectedFunTys] in GHC.Tc.Utils.Unify.</span></span>
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1191
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1219
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<pre style="margin: 0;"> <span id="LC1219" class="line" lang="haskell"> <span class="n" style="color: #333;">expr</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">mkHsAppTypes</span> <span class="n" style="color: #333;">fun</span> <span class="n" style="color: #333;">type_app_args</span></span>
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1192
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<pre style="margin: 0;">-<span id="LC1192" class="line" lang="haskell"> <span class="n" style="color: #333;">type_app_args</span> <span class="o" style="font-weight: 600;">=</span> <span class="p">[</span><span class="n" style="color: #333;">hs_ty</span> <span class="o" style="font-weight: 600;">|</span> <span class="kt" style="color: #458; font-weight: 600;">Hs<span class="idiff left">TypeArg</span></span><span class="idiff"> </span><span class="kr" style="font-weight: 600;"><span class="idiff">_</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff right">hs_ty</span></span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">args</span><span class="p">]</span></span>
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1220
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<pre style="margin: 0;">+<span id="LC1220" class="line" lang="haskell"> <span class="n" style="color: #333;">type_app_args</span> <span class="o" style="font-weight: 600;">=</span> <span class="p">[</span><span class="n" style="color: #333;">hs_ty</span> <span class="o" style="font-weight: 600;">|</span> <span class="kt" style="color: #458; font-weight: 600;">Hs<span class="idiff left">ExprTypeArg</span></span><span class="idiff"> </span><span class="kr" style="font-weight: 600;"><span class="idiff">_</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">hs_ty</span></span><span class="idiff"> </span><span class="kr" style="font-weight: 600;"><span class="idiff right">_</span></span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">args</span><span class="p">]</span></span>
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1193
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1221
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<pre style="margin: 0;"> <span id="LC1221" class="line" lang="haskell"></span>
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1194
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1222
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<pre style="margin: 0;"> <span id="LC1222" class="line" lang="haskell"><span class="n" style="color: #333;">mk_op_msg</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">LHsExpr</span> <span class="kt" style="color: #458; font-weight: 600;">GhcRn</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">SDoc</span></span>
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1195
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1223
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<pre style="margin: 0;"> <span id="LC1223" class="line" lang="haskell"><span class="n" style="color: #333;">mk_op_msg</span> <span class="n" style="color: #333;">op</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">text</span> <span class="s" style="color: #d14;">"The operator"</span> <span class="o" style="font-weight: 600;"><+></span> <span class="n" style="color: #333;">quotes</span> <span class="p">(</span><span class="n" style="color: #333;">ppr</span> <span class="n" style="color: #333;">op</span><span class="p">)</span> <span class="o" style="font-weight: 600;"><+></span> <span class="n" style="color: #333;">text</span> <span class="s" style="color: #d14;">"takes"</span></span>
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1196
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1224
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<pre style="margin: 0;"> <span id="LC1224" class="line" lang="haskell"></span>
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1197
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1225
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<pre style="margin: 0;"> <span id="LC1225" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">----------------</span></span>
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1198
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<pre style="margin: 0;">-<span id="LC1198" class="line" lang="haskell"><span class="n" style="color: #333;">tcInferAppHead</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">LHsExpr</span> <span class="kt" style="color: #458; font-weight: 600;">GhcRn</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TcM</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">LHsExpr</span> <span class="kt" style="color: #458; font-weight: 600;">GhcTc<span class="idiff left right">Id</span></span><span class="p">,</span> <span class="kt" style="color: #458; font-weight: 600;">TcSigmaType</span><span class="p">)</span></span>
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1226
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<pre style="margin: 0;">+<span id="LC1226" class="line" lang="haskell"><span class="n" style="color: #333;">tcInferAppHead</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">LHsExpr</span> <span class="kt" style="color: #458; font-weight: 600;">GhcRn</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TcM</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">LHsExpr</span> <span class="kt" style="color: #458; font-weight: 600;">GhcTc</span><span class="p">,</span> <span class="kt" style="color: #458; font-weight: 600;">TcSigmaType</span><span class="p">)</span></span>
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1199
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1227
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<pre style="margin: 0;"> <span id="LC1227" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- Infer type of the head of an application,</span></span>
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1200
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1228
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<pre style="margin: 0;"> <span id="LC1228" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- i.e. the 'f' in (f e1 ... en)</span></span>
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1201
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1229
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<pre style="margin: 0;"> <span id="LC1229" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- We get back a SigmaType because we have special cases for</span></span>
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1202
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1230
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<pre style="margin: 0;"> <span id="LC1230" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- * A bare identifier (just look it up)</span></span>
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1203
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1231
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<pre style="margin: 0;"> <span id="LC1231" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- This case also covers a record selectro HsRecFld</span></span>
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1204
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1232
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<pre style="margin: 0;"> <span id="LC1232" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- * An expression with a type signature (e :: ty)</span></span>
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1233
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<pre style="margin: 0;">+<span id="LC1233" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">--</span></span>
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1234
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<pre style="margin: 0;">+<span id="LC1234" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- Note that [] and (,,) are both HsVar:</span></span>
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1235
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<pre style="margin: 0;">+<span id="LC1235" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- see Note [Empty lists] and [ExplicitTuple] in GHC.Hs.Expr</span></span>
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1205
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1236
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<pre style="margin: 0;"> <span id="LC1236" class="line" lang="haskell"></span>
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1206
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1237
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<pre style="margin: 0;"> <span id="LC1237" class="line" lang="haskell"><span class="n" style="color: #333;">tcInferAppHead</span> <span class="n" style="color: #333;">el</span><span class="o" style="font-weight: 600;">@</span><span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">L</span> <span class="n" style="color: #333;">loc</span> <span class="n" style="color: #333;">e</span><span class="p">)</span></span>
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1207
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1238
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<pre style="margin: 0;"> <span id="LC1238" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">case</span> <span class="n" style="color: #333;">e</span> <span class="kr" style="font-weight: 600;">of</span></span>
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1239
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<pre style="margin: 0;">+<span id="LC1239" class="line" lang="haskell"> <span class="kt" style="color: #458; font-weight: 600;">HsPar</span> <span class="kr" style="font-weight: 600;">_</span> <span class="n" style="color: #333;">e</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">tcInferAppHead</span> <span class="n" style="color: #333;">e</span></span>
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1240
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<pre style="margin: 0;">+<span id="LC1240" class="line" lang="haskell"> <span class="kt" style="color: #458; font-weight: 600;">HsPragE</span> <span class="n" style="color: #333;">x</span> <span class="n" style="color: #333;">prag</span> <span class="n" style="color: #333;">e</span> <span class="o" style="font-weight: 600;">-></span> <span class="kr" style="font-weight: 600;">do</span> <span class="p">{</span> <span class="p">(</span><span class="n" style="color: #333;">e'</span><span class="p">,</span><span class="n" style="color: #333;">ty</span><span class="p">)</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">tcInferAppHead</span> <span class="n" style="color: #333;">e</span></span>
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<td class="diff-line-num new new_line" data-linenumber="1241" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
1241
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<pre style="margin: 0;">+<span id="LC1241" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">return</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">L</span> <span class="n" style="color: #333;">loc</span> <span class="o" style="font-weight: 600;">$</span> <span class="kt" style="color: #458; font-weight: 600;">HsPragE</span> <span class="n" style="color: #333;">x</span> <span class="p">(</span><span class="n" style="color: #333;">tcExprPrag</span> <span class="n" style="color: #333;">prag</span><span class="p">)</span> <span class="n" style="color: #333;">e'</span><span class="p">,</span> <span class="n" style="color: #333;">ty</span><span class="p">)</span> <span class="p">}</span></span>
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1208
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1242
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<pre style="margin: 0;"> <span id="LC1242" class="line" lang="haskell"> <span class="kt" style="color: #458; font-weight: 600;">HsVar</span> <span class="kr" style="font-weight: 600;">_</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">L</span> <span class="kr" style="font-weight: 600;">_</span> <span class="n" style="color: #333;">nm</span><span class="p">)</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">add_loc</span> <span class="o" style="font-weight: 600;">$</span> <span class="n" style="color: #333;">tcInferId</span> <span class="n" style="color: #333;">nm</span></span>
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1209
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1243
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<pre style="margin: 0;"> <span id="LC1243" class="line" lang="haskell"> <span class="kt" style="color: #458; font-weight: 600;">HsRecFld</span> <span class="kr" style="font-weight: 600;">_</span> <span class="n" style="color: #333;">f</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">add_loc</span> <span class="o" style="font-weight: 600;">$</span> <span class="n" style="color: #333;">tcInferRecSelId</span> <span class="n" style="color: #333;">f</span></span>
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1210
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1244
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<pre style="margin: 0;"> <span id="LC1244" class="line" lang="haskell"> <span class="kt" style="color: #458; font-weight: 600;">ExprWithTySig</span> <span class="kr" style="font-weight: 600;">_</span> <span class="n" style="color: #333;">e</span> <span class="n" style="color: #333;">hs_ty</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">add_loc_ctxt</span> <span class="o" style="font-weight: 600;">$</span> <span class="n" style="color: #333;">tcExprWithSig</span> <span class="n" style="color: #333;">e</span> <span class="n" style="color: #333;">hs_ty</span></span>
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1211
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<pre style="margin: 0;">-<span id="LC1211" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">_</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">add_loc_ctxt</span> <span class="o" style="font-weight: 600;">$</span> <span class="n" style="color: #333;">tcInfer<span class="idiff left right">Inst</span></span> <span class="p">(</span><span class="n" style="color: #333;">tcExpr</span> <span class="n" style="color: #333;">e</span><span class="p">)</span></span>
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1245
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<pre style="margin: 0;">+<span id="LC1245" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">_</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">add_loc_ctxt</span> <span class="o" style="font-weight: 600;">$</span> <span class="n" style="color: #333;">tcInfer</span> <span class="p">(</span><span class="n" style="color: #333;">tcExpr</span> <span class="n" style="color: #333;">e</span><span class="p">)</span></span>
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1212
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1246
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<pre style="margin: 0;"> <span id="LC1246" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">where</span></span>
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1213
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1247
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<pre style="margin: 0;"> <span id="LC1247" class="line" lang="haskell"> <span class="n" style="color: #333;">add_loc_ctxt</span> <span class="n" style="color: #333;">thing</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">addErrCtxt</span> <span class="p">(</span><span class="n" style="color: #333;">exprCtxt</span> <span class="n" style="color: #333;">el</span><span class="p">)</span> <span class="o" style="font-weight: 600;">$</span></span>
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1214
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1248
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<pre style="margin: 0;"> <span id="LC1248" class="line" lang="haskell"> <span class="n" style="color: #333;">add_loc</span> <span class="n" style="color: #333;">thing</span></span>
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<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -1222,35 +1256,42 @@ tcInferAppHead el@(L loc e)</td>
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1222
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<pre style="margin: 0;"> <span id="LC1256" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- applications</span></span>
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1223
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1257
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<pre style="margin: 0;"> <span id="LC1257" class="line" lang="haskell"><span class="n" style="color: #333;">tcArgs</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">LHsExpr</span> <span class="kt" style="color: #458; font-weight: 600;">GhcRn</span> <span class="c1" style="color: #998; font-style: italic;">-- ^ The function itself (for err msgs only)</span></span>
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1224
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<pre style="margin: 0;"> <span id="LC1258" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TcSigmaType</span> <span class="c1" style="color: #998; font-style: italic;">-- ^ the (uninstantiated) type of the function</span></span>
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1225
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<pre style="margin: 0;">-<span id="LC1225" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">CtOrigin</span> <span class="c1" style="color: #998; font-style: italic;">-- ^ the origin for the function's type</span></span>
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1226
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1259
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<pre style="margin: 0;"> <span id="LC1259" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">-></span> <span class="p">[</span><span class="kt" style="color: #458; font-weight: 600;">LHsExprArgIn</span><span class="p">]</span> <span class="c1" style="color: #998; font-style: italic;">-- ^ the args</span></span>
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1227
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<pre style="margin: 0;">-<span id="LC1227" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">SDoc</span> <span class="c1" style="color: #998; font-style: italic;">-- ^ the herald for matchActualFunTys</span></span>
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1228
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<pre style="margin: 0;">-<span id="LC1228" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TcM</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">HsWrapper</span><span class="p">,</span> <span class="p">[</span><span class="kt" style="color: #458; font-weight: 600;">LHsExprArgOut</span><span class="p">],</span> <span class="kt" style="color: #458; font-weight: 600;">TcSigmaType</span><span class="p">)</span></span>
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1260
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<pre style="margin: 0;">+<span id="LC1260" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TcM</span> <span class="p">([</span><span class="kt" style="color: #458; font-weight: 600;">LHsExprArgOut</span><span class="p">],</span> <span class="kt" style="color: #458; font-weight: 600;">TcSigmaType</span><span class="p">)</span></span>
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1229
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1261
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<pre style="margin: 0;"> <span id="LC1261" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- ^ (a wrapper for the function, the tc'd args, result type)</span></span>
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1230
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<pre style="margin: 0;">-<span id="LC1230" class="line" lang="haskell"><span class="n" style="color: #333;">tcArgs</span> <span class="n" style="color: #333;">fun</span> <span class="n" style="color: #333;">orig_fun_ty</span> <span class="n" style="color: #333;"><span class="idiff left">fun_orig</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">orig_args</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff right">herald</span></span></span>
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1231
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<pre style="margin: 0;">-<span id="LC1231" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">go</span> <span class="kt" style="color: #458; font-weight: 600;"><span class="idiff left">[]</span></span><span class="idiff right"> </span><span class="mi" style="color: #099;">1</span> <span class="n" style="color: #333;">orig_fun_ty</span> <span class="n" style="color: #333;">orig_args</span></span>
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1262
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<pre style="margin: 0;">+<span id="LC1262" class="line" lang="haskell"><span class="n" style="color: #333;">tcArgs</span> <span class="n" style="color: #333;">fun</span> <span class="n" style="color: #333;">orig_fun_ty</span> <span class="n" style="color: #333;"><span class="idiff left right">orig_args</span></span></span>
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<td class="diff-line-num new new_line" data-linenumber="1263" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
1263
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<pre style="margin: 0;">+<span id="LC1263" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">go</span> <span class="mi" style="color: #099;">1</span> <span class="n" style="color: #333;">orig_fun_ty</span> <span class="n" style="color: #333;">orig_args</span></span>
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1232
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1264
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<pre style="margin: 0;"> <span id="LC1264" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">where</span></span>
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1265
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<pre style="margin: 0;">+<span id="LC1265" class="line" lang="haskell"> <span class="n" style="color: #333;">fun_orig</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">lexprCtOrigin</span> <span class="n" style="color: #333;">fun</span></span>
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1266
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<pre style="margin: 0;">+<span id="LC1266" class="line" lang="haskell"> <span class="n" style="color: #333;">herald</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">mk_app_msg</span> <span class="n" style="color: #333;">fun</span> <span class="n" style="color: #333;">orig_args</span></span>
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1267
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<pre style="margin: 0;">+<span id="LC1267" class="line" lang="haskell"></span>
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1268
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<pre style="margin: 0;">+<span id="LC1268" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- commented out</span></span>
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1233
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1269
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<pre style="margin: 0;"> <span id="LC1269" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- Don't count visible type arguments when determining how many arguments</span></span>
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1234
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<pre style="margin: 0;"> <span id="LC1270" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- an expression is given in an arity mismatch error, since visible type</span></span>
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1235
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<pre style="margin: 0;"> <span id="LC1271" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- arguments reported as a part of the expression herald itself.</span></span>
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1236
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1272
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<pre style="margin: 0;"> <span id="LC1272" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- See Note [Herald for matchExpectedFunTys] in GHC.Tc.Utils.Unify.</span></span>
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1237
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<pre style="margin: 0;">-<span id="LC1237" class="line" lang="haskell"> <span class="n" style="color: #333;"><span class="idiff left right">orig_expr_args_arity</span></span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">count</span> <span class="n" style="color: #333;">isHsValArg</span> <span class="n" style="color: #333;">orig_args</span></span>
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1273
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<pre style="margin: 0;">+<span id="LC1273" class="line" lang="haskell"> <span class="n" style="color: #333;"><span class="idiff left right">n_val_args</span></span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">count</span> <span class="n" style="color: #333;">isHsValArg</span> <span class="n" style="color: #333;">orig_args</span></span>
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1238
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1274
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<pre style="margin: 0;"> <span id="LC1274" class="line" lang="haskell"></span>
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1239
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1275
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<pre style="margin: 0;"> <span id="LC1275" class="line" lang="haskell"> <span class="n" style="color: #333;">fun_is_out_of_scope</span> <span class="c1" style="color: #998; font-style: italic;">-- See Note [VTA for out-of-scope functions]</span></span>
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1240
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1276
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<pre style="margin: 0;"> <span id="LC1276" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">case</span> <span class="n" style="color: #333;">fun</span> <span class="kr" style="font-weight: 600;">of</span></span>
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1241
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1277
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<pre style="margin: 0;"> <span id="LC1277" class="line" lang="haskell"> <span class="kt" style="color: #458; font-weight: 600;">L</span> <span class="kr" style="font-weight: 600;">_</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">HsUnboundVar</span> <span class="p">{})</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">True</span></span>
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1242
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<td class="diff-line-num new_line" data-linenumber="1278" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">
1278
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<pre style="margin: 0;"> <span id="LC1278" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">_</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">False</span></span>
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1243
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1279
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<pre style="margin: 0;"> <span id="LC1279" class="line" lang="haskell"></span>
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1244
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<pre style="margin: 0;">-<span id="LC1244" class="line" lang="haskell"> <span class="n" style="color: #333;">go</span> <span class="kr" style="font-weight: 600;">_</span> <span class="kr" style="font-weight: 600;">_</span> <span class="n" style="color: #333;">fun_ty</span> <span class="kt" style="color: #458; font-weight: 600;">[]</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">return</span> <span class="p">(</span><span class="n" style="color: #333;">idHsWrapper</span><span class="p">,</span> <span class="kt" style="color: #458; font-weight: 600;">[]</span><span class="p">,</span> <span class="n" style="color: #333;">fun_ty</span><span class="p">)</span></span>
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1280
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<pre style="margin: 0;">+<span id="LC1280" class="line" lang="haskell"> <span class="n" style="color: #333;">go</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">Int</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TcSigmaType</span> <span class="o" style="font-weight: 600;">-></span> <span class="p">[</span><span class="kt" style="color: #458; font-weight: 600;">LHsExprArgIn</span><span class="p">]</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TcM</span> <span class="p">([</span><span class="kt" style="color: #458; font-weight: 600;">LHsExprArgOut</span><span class="p">],</span> <span class="kt" style="color: #458; font-weight: 600;">TcSigmaType</span><span class="p">)</span></span>
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1281
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<pre style="margin: 0;">+<span id="LC1281" class="line" lang="haskell"> <span class="n" style="color: #333;">go</span> <span class="n" style="color: #333;">n</span> <span class="n" style="color: #333;">fun_ty</span> <span class="n" style="color: #333;">args</span></span>
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1282
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<pre style="margin: 0;">+<span id="LC1282" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">do</span> <span class="p">{</span> <span class="n" style="color: #333;">traceTc</span> <span class="s" style="color: #d14;">"tcArgs:go {"</span> <span class="p">(</span><span class="n" style="color: #333;">ppr</span> <span class="n" style="color: #333;">n</span> <span class="o" style="font-weight: 600;"><+></span> <span class="n" style="color: #333;">ppr</span> <span class="n" style="color: #333;">fun_ty</span> <span class="o" style="font-weight: 600;">$$</span> <span class="n" style="color: #333;">ppr</span> <span class="n" style="color: #333;">args</span><span class="p">)</span></span>
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1283
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<pre style="margin: 0;">+<span id="LC1283" class="line" lang="haskell"> <span class="p">;</span> <span class="p">(</span><span class="n" style="color: #333;">args'</span><span class="p">,</span> <span class="n" style="color: #333;">res_ty</span><span class="p">)</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">go'</span> <span class="n" style="color: #333;">n</span> <span class="n" style="color: #333;">fun_ty</span> <span class="n" style="color: #333;">args</span></span>
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<td class="diff-line-num new new_line" data-linenumber="1284" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
1284
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<pre style="margin: 0;">+<span id="LC1284" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">traceTc</span> <span class="s" style="color: #d14;">"tcArgs:go }"</span> <span class="p">(</span><span class="n" style="color: #333;">ppr</span> <span class="n" style="color: #333;">res_ty</span> <span class="o" style="font-weight: 600;">$$</span> <span class="n" style="color: #333;">ppr</span> <span class="n" style="color: #333;">args'</span><span class="p">)</span></span>
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<td class="diff-line-num new new_line" data-linenumber="1285" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
1285
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<pre style="margin: 0;">+<span id="LC1285" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">return</span> <span class="p">(</span><span class="n" style="color: #333;">args'</span><span class="p">,</span> <span class="n" style="color: #333;">res_ty</span><span class="p">)</span> <span class="p">}</span></span>
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1286
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<pre style="margin: 0;">+<span id="LC1286" class="line" lang="haskell"> <span class="n" style="color: #333;">go'</span> <span class="kr" style="font-weight: 600;">_</span> <span class="n" style="color: #333;">fun_ty</span> <span class="kt" style="color: #458; font-weight: 600;">[]</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">traceTc</span> <span class="s" style="color: #d14;">"tcArgs:ret"</span> <span class="p">(</span><span class="n" style="color: #333;">ppr</span> <span class="n" style="color: #333;">fun_ty</span><span class="p">)</span> <span class="o" style="font-weight: 600;">>></span> <span class="n" style="color: #333;">return</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">[]</span><span class="p">,</span> <span class="n" style="color: #333;">fun_ty</span><span class="p">)</span></span>
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1245
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1287
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<pre style="margin: 0;"> <span id="LC1287" class="line" lang="haskell"></span>
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1246
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<pre style="margin: 0;">-<span id="LC1246" class="line" lang="haskell"> <span class="n" style="color: #333;">go</span> <span class="n" style="color: #333;">acc_args</span> <span class="n" style="color: #333;">n</span> <span class="n" style="color: #333;">fun_ty</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">HsArgPar</span> <span class="n" style="color: #333;">sp</span> <span class="o" style="font-weight: 600;">:</span> <span class="n" style="color: #333;">args</span><span class="p">)</span></span>
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<pre style="margin: 0;">-<span id="LC1247" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">do</span> <span class="p">{</span> <span class="p">(</span><span class="n" style="color: #333;">inner_wrap</span><span class="p">,</span> <span class="n" style="color: #333;">args'</span><span class="p">,</span> <span class="n" style="color: #333;">res_ty</span><span class="p">)</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">go</span> <span class="n" style="color: #333;">acc_args</span> <span class="n" style="color: #333;">n</span> <span class="n" style="color: #333;">fun_ty</span> <span class="n" style="color: #333;">args</span></span>
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1248
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<pre style="margin: 0;">-<span id="LC1248" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">return</span> <span class="p">(</span><span class="n" style="color: #333;">inner_wrap</span><span class="p">,</span> <span class="kt" style="color: #458; font-weight: 600;">HsArgPar</span> <span class="n" style="color: #333;">sp</span> <span class="o" style="font-weight: 600;">:</span> <span class="n" style="color: #333;">args'</span><span class="p">,</span> <span class="n" style="color: #333;">res_ty</span><span class="p">)</span></span>
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1249
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<pre style="margin: 0;">-<span id="LC1249" class="line" lang="haskell"> <span class="p">}</span></span>
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1288
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<pre style="margin: 0;">+<span id="LC1288" class="line" lang="haskell"> <span class="n" style="color: #333;">go'</span> <span class="n" style="color: #333;">n</span> <span class="n" style="color: #333;">fun_ty</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">HsExprPar</span> <span class="n" style="color: #333;">sp</span> <span class="o" style="font-weight: 600;">:</span> <span class="n" style="color: #333;">args</span><span class="p">)</span></span>
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1289
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<pre style="margin: 0;">+<span id="LC1289" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">do</span> <span class="p">{</span> <span class="p">(</span><span class="n" style="color: #333;">args'</span><span class="p">,</span> <span class="n" style="color: #333;">res_ty</span><span class="p">)</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">go</span> <span class="n" style="color: #333;">n</span> <span class="n" style="color: #333;">fun_ty</span> <span class="n" style="color: #333;">args</span></span>
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1290
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<pre style="margin: 0;">+<span id="LC1290" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">return</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">HsExprPar</span> <span class="n" style="color: #333;">sp</span> <span class="o" style="font-weight: 600;">:</span> <span class="n" style="color: #333;">args'</span><span class="p">,</span> <span class="n" style="color: #333;">res_ty</span><span class="p">)</span> <span class="p">}</span></span>
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1250
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1291
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<pre style="margin: 0;"> <span id="LC1291" class="line" lang="haskell"></span>
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1251
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<pre style="margin: 0;">-<span id="LC1251" class="line" lang="haskell"> <span class="n" style="color: #333;">go</span><span class="idiff left"> </span><span class="n" style="color: #333;"><span class="idiff">acc_args</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">n</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">fun_ty</span></span><span class="idiff"> </span><span class="p"><span class="idiff">(</span></span><span class="kt" style="color: #458; font-weight: 600;"><span class="idiff">HsTypeArg</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">l</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff right">hs_ty_arg</span></span> <span class="o" style="font-weight: 600;">:</span> <span class="n" style="color: #333;">args</span><span class="p">)</span></span>
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1292
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<pre style="margin: 0;">+<span id="LC1292" class="line" lang="haskell"> <span class="n" style="color: #333;">go<span class="idiff left">'</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">n</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">fun_ty</span></span><span class="idiff"> </span><span class="p"><span class="idiff">(</span></span><span class="kt" style="color: #458; font-weight: 600;"><span class="idiff">HsExprTypeArg</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">loc</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">hs_ty_arg</span></span><span class="idiff"> </span><span class="kr" style="font-weight: 600;"><span class="idiff right">_</span></span> <span class="o" style="font-weight: 600;">:</span> <span class="n" style="color: #333;">args</span><span class="p">)</span></span>
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1252
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1293
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<pre style="margin: 0;"> <span id="LC1293" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">|</span> <span class="n" style="color: #333;">fun_is_out_of_scope</span> <span class="c1" style="color: #998; font-style: italic;">-- See Note [VTA for out-of-scope functions]</span></span>
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1253
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<pre style="margin: 0;">-<span id="LC1253" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">go</span> <span class="n" style="color: #333;"><span class="idiff left">acc_args</span></span><span class="idiff right"> </span><span class="p">(</span><span class="n" style="color: #333;">n</span><span class="o" style="font-weight: 600;">+</span><span class="mi" style="color: #099;">1</span><span class="p">)</span> <span class="n" style="color: #333;">fun_ty</span> <span class="n" style="color: #333;">args</span></span>
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1294
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<pre style="margin: 0;">+<span id="LC1294" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">go</span> <span class="p">(</span><span class="n" style="color: #333;">n</span><span class="o" style="font-weight: 600;">+</span><span class="mi" style="color: #099;">1</span><span class="p">)</span> <span class="n" style="color: #333;">fun_ty</span> <span class="n" style="color: #333;">args</span></span>
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1254
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1295
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<pre style="margin: 0;"> <span id="LC1295" class="line" lang="haskell"></span>
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1255
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1296
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<pre style="margin: 0;"> <span id="LC1296" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">|</span> <span class="n" style="color: #333;">otherwise</span></span>
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1256
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1297
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<pre style="margin: 0;"> <span id="LC1297" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">do</span> <span class="p">{</span> <span class="p">(</span><span class="n" style="color: #333;">wrap1</span><span class="p">,</span> <span class="n" style="color: #333;">upsilon_ty</span><span class="p">)</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">topInstantiateInferred</span> <span class="n" style="color: #333;">fun_orig</span> <span class="n" style="color: #333;">fun_ty</span></span>
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<td class="diff-line-num unfold js-unfold old_line" data-linenumber="1278" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>
<td class="diff-line-num unfold js-unfold new_line" data-linenumber="1319" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>
<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -1278,30 +1319,22 @@ tcArgs fun orig_fun_ty fun_orig orig_args herald</td>
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1278
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1319
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<pre style="margin: 0;"> <span id="LC1319" class="line" lang="haskell"> <span class="p">,</span> <span class="n" style="color: #333;">debugPprType</span> <span class="n" style="color: #333;">inner_ty</span></span>
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1279
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1320
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<pre style="margin: 0;"> <span id="LC1320" class="line" lang="haskell"> <span class="p">,</span> <span class="n" style="color: #333;">debugPprType</span> <span class="n" style="color: #333;">insted_ty</span> <span class="p">])</span></span>
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1280
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1321
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<pre style="margin: 0;"> <span id="LC1321" class="line" lang="haskell"></span>
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1281
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<pre style="margin: 0;">-<span id="LC1281" class="line" lang="haskell"> <span class="p">;</span> <span class="p">(</span><span class="n" style="color: #333;">inner_wrap</span><span class="p">,</span> <span class="n" style="color: #333;">args'</span><span class="p">,</span> <span class="n" style="color: #333;">res_ty</span><span class="p">)</span></span>
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1282
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<pre style="margin: 0;">-<span id="LC1282" class="line" lang="haskell"> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">go</span> <span class="n" style="color: #333;">acc_args</span> <span class="p">(</span><span class="n" style="color: #333;">n</span><span class="o" style="font-weight: 600;">+</span><span class="mi" style="color: #099;">1</span><span class="p">)</span> <span class="n" style="color: #333;">insted_ty</span> <span class="n" style="color: #333;">args</span></span>
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1283
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<pre style="margin: 0;">-<span id="LC1283" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- inner_wrap :: insted_ty "->" (map typeOf args') -> res_ty</span></span>
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1284
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<td class="diff-line-num new_line old" data-linenumber="1322" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">
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<pre style="margin: 0;">-<span id="LC1284" class="line" lang="haskell"> <span class="p">;</span> <span class="kr" style="font-weight: 600;">let</span> <span class="n" style="color: #333;">inst_wrap</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">mkWpTyApps</span> <span class="p">[</span><span class="n" style="color: #333;">ty_arg</span><span class="p">]</span></span>
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1285
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<td class="diff-line-num new_line old" data-linenumber="1322" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">
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<pre style="margin: 0;">-<span id="LC1285" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">return</span> <span class="p">(</span> <span class="n" style="color: #333;">inner_wrap</span> <span class="o" style="font-weight: 600;"><.></span> <span class="n" style="color: #333;">inst_wrap</span> <span class="o" style="font-weight: 600;"><.></span> <span class="n" style="color: #333;">wrap1</span></span>
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<td class="diff-line-num old old_line" data-linenumber="1286" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">
1286
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<td class="diff-line-num new_line old" data-linenumber="1322" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">
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<pre style="margin: 0;">-<span id="LC1286" class="line" lang="haskell"> <span class="p">,</span> <span class="kt" style="color: #458; font-weight: 600;">HsTypeArg</span> <span class="n" style="color: #333;">l</span> <span class="n" style="color: #333;">hs_ty_arg</span> <span class="o" style="font-weight: 600;">:</span> <span class="n" style="color: #333;">args'</span></span>
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<td class="diff-line-num new old_line" data-linenumber="1287" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
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1322
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<pre style="margin: 0;">+<span id="LC1322" class="line" lang="haskell"> <span class="p">;</span> <span class="p">(</span><span class="n" style="color: #333;">args'</span><span class="p">,</span> <span class="n" style="color: #333;">res_ty</span><span class="p">)</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">go</span> <span class="p">(</span><span class="n" style="color: #333;">n</span><span class="o" style="font-weight: 600;">+</span><span class="mi" style="color: #099;">1</span><span class="p">)</span> <span class="n" style="color: #333;">insted_ty</span> <span class="n" style="color: #333;">args</span></span>
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<td class="diff-line-num new new_line" data-linenumber="1323" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
1323
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<pre style="margin: 0;">+<span id="LC1323" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">return</span> <span class="p">(</span> <span class="n" style="color: #333;">addArgWrap</span> <span class="n" style="color: #333;">wrap1</span> <span class="o" style="font-weight: 600;">$</span> <span class="kt" style="color: #458; font-weight: 600;">HsExprTypeArg</span> <span class="n" style="color: #333;">loc</span> <span class="n" style="color: #333;">hs_ty_arg</span> <span class="n" style="color: #333;">ty_arg</span> <span class="o" style="font-weight: 600;">:</span> <span class="n" style="color: #333;">args'</span></span>
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1287
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<td class="diff-line-num new_line" data-linenumber="1324" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">
1324
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<pre style="margin: 0;"> <span id="LC1324" class="line" lang="haskell"> <span class="p">,</span> <span class="n" style="color: #333;">res_ty</span> <span class="p">)</span> <span class="p">}</span></span>
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1288
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<td class="diff-line-num new_line" data-linenumber="1325" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">
1325
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<pre style="margin: 0;"> <span id="LC1325" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">_</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">ty_app_err</span> <span class="n" style="color: #333;">upsilon_ty</span> <span class="n" style="color: #333;">hs_ty_arg</span> <span class="p">}</span></span>
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<td class="diff-line-num old_line" data-linenumber="1289" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">
1289
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<td class="diff-line-num new_line" data-linenumber="1326" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">
1326
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<pre style="margin: 0;"> <span id="LC1326" class="line" lang="haskell"></span>
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1290
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<td class="diff-line-num new_line old" data-linenumber="1327" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">
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<pre style="margin: 0;">-<span id="LC1290" class="line" lang="haskell"> <span class="n" style="color: #333;">go</span><span class="idiff left"> </span><span class="n" style="color: #333;"><span class="idiff">acc_args</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">n</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">fun_ty</span></span><span class="idiff"> </span><span class="p"><span class="idiff">(</span></span><span class="kt" style="color: #458; font-weight: 600;"><span class="idiff right">HsValArg</span></span> <span class="n" style="color: #333;">arg</span> <span class="o" style="font-weight: 600;">:</span> <span class="n" style="color: #333;">args</span><span class="p">)</span></span>
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1327
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<pre style="margin: 0;">+<span id="LC1327" class="line" lang="haskell"> <span class="n" style="color: #333;">go<span class="idiff left">'</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">n</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">fun_ty</span></span><span class="idiff"> </span><span class="p"><span class="idiff">(</span></span><span class="kt" style="color: #458; font-weight: 600;"><span class="idiff">HsExprValArg</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff right">loc</span></span> <span class="n" style="color: #333;">arg</span> <span class="o" style="font-weight: 600;">:</span> <span class="n" style="color: #333;">args</span><span class="p">)</span></span>
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1291
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<td class="diff-line-num new_line" data-linenumber="1328" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">
1328
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<pre style="margin: 0;"> <span id="LC1328" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">do</span> <span class="p">{</span> <span class="p">(</span><span class="n" style="color: #333;">wrap</span><span class="p">,</span> <span class="p">[</span><span class="n" style="color: #333;">arg_ty</span><span class="p">],</span> <span class="n" style="color: #333;">res_ty</span><span class="p">)</span></span>
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1292
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<td class="diff-line-num new_line old" data-linenumber="1329" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">
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<pre style="margin: 0;">-<span id="LC1292" class="line" lang="haskell"> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">matchActualFunTysPart</span> <span class="n" style="color: #333;">herald</span> <span class="n" style="color: #333;">fun_orig</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Just</span> <span class="p">(</span><span class="n" style="color: #333;">unLoc</span> <span class="n" style="color: #333;">fun</span><span class="p">))</span> <span class="mi" style="color: #099;">1</span> <span class="n" style="color: #333;">fun_ty</span></span>
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1293
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<td class="diff-line-num new_line old" data-linenumber="1329" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">
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<pre style="margin: 0;">-<span id="LC1293" class="line" lang="haskell"> <span class="n" style="color: #333;">acc_args</span> <span class="n" style="color: #333;">orig_expr_args_arity</span></span>
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1294
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<td class="diff-line-num new_line old" data-linenumber="1329" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">
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<pre style="margin: 0;">-<span id="LC1294" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- wrap :: fun_ty "->" arg_ty -> res_ty</span></span>
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1329
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<pre style="margin: 0;">+<span id="LC1329" class="line" lang="haskell"> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">matchActualFunTysPart</span> <span class="n" style="color: #333;">herald</span> <span class="n" style="color: #333;">fun_orig</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Just</span> <span class="p">(</span><span class="n" style="color: #333;">unLoc</span> <span class="n" style="color: #333;">fun</span><span class="p">))</span> <span class="n" style="color: #333;">orig_fun_ty</span></span>
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<td class="diff-line-num new new_line" data-linenumber="1330" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
1330
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<pre style="margin: 0;">+<span id="LC1330" class="line" lang="haskell"> <span class="n" style="color: #333;">n_val_args</span> <span class="mi" style="color: #099;">1</span> <span class="n" style="color: #333;">fun_ty</span></span>
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1295
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1331
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<pre style="margin: 0;"> <span id="LC1331" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">arg'</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">tcArg</span> <span class="n" style="color: #333;">fun</span> <span class="n" style="color: #333;">arg</span> <span class="n" style="color: #333;">arg_ty</span> <span class="n" style="color: #333;">n</span></span>
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1296
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<pre style="margin: 0;">-<span id="LC1296" class="line" lang="haskell"> <span class="p">;</span> <span class="p">(</span><span class="n" style="color: #333;">inner_wrap</span><span class="p">,</span> <span class="n" style="color: #333;">args'</span><span class="p">,</span> <span class="n" style="color: #333;">inner_res_ty</span><span class="p">)</span></span>
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1297
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<pre style="margin: 0;">-<span id="LC1297" class="line" lang="haskell"> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">go</span> <span class="p">(</span><span class="n" style="color: #333;">arg_ty</span> <span class="o" style="font-weight: 600;">:</span> <span class="n" style="color: #333;">acc_args</span><span class="p">)</span> <span class="p">(</span><span class="n" style="color: #333;">n</span><span class="o" style="font-weight: 600;">+</span><span class="mi" style="color: #099;">1</span><span class="p">)</span> <span class="n" style="color: #333;">res_ty</span> <span class="n" style="color: #333;">args</span></span>
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1298
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<pre style="margin: 0;">-<span id="LC1298" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- inner_wrap :: res_ty "->" (map typeOf args') -> inner_res_ty</span></span>
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1299
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<pre style="margin: 0;">-<span id="LC1299" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">return</span> <span class="p">(</span> <span class="n" style="color: #333;">mkWpFun</span> <span class="n" style="color: #333;">idHsWrapper</span> <span class="n" style="color: #333;">inner_wrap</span> <span class="n" style="color: #333;">arg_ty</span> <span class="n" style="color: #333;">res_ty</span> <span class="n" style="color: #333;">doc</span> <span class="o" style="font-weight: 600;"><.></span> <span class="n" style="color: #333;">wrap</span></span>
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1300
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<pre style="margin: 0;">-<span id="LC1300" class="line" lang="haskell"> <span class="p">,</span> <span class="kt" style="color: #458; font-weight: 600;">HsValArg</span> <span class="n" style="color: #333;">arg'</span> <span class="o" style="font-weight: 600;">:</span> <span class="n" style="color: #333;">args'</span></span>
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1332
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<pre style="margin: 0;">+<span id="LC1332" class="line" lang="haskell"> <span class="p">;</span> <span class="p">(</span><span class="n" style="color: #333;">args'</span><span class="p">,</span> <span class="n" style="color: #333;">inner_res_ty</span><span class="p">)</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">go</span> <span class="p">(</span><span class="n" style="color: #333;">n</span><span class="o" style="font-weight: 600;">+</span><span class="mi" style="color: #099;">1</span><span class="p">)</span> <span class="n" style="color: #333;">res_ty</span> <span class="n" style="color: #333;">args</span></span>
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1333
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<pre style="margin: 0;">+<span id="LC1333" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">return</span> <span class="p">(</span> <span class="n" style="color: #333;">addArgWrap</span> <span class="n" style="color: #333;">wrap</span> <span class="o" style="font-weight: 600;">$</span> <span class="kt" style="color: #458; font-weight: 600;">HsExprValArg</span> <span class="n" style="color: #333;">loc</span> <span class="n" style="color: #333;">arg'</span> <span class="o" style="font-weight: 600;">:</span> <span class="n" style="color: #333;">args'</span></span>
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1301
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1334
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<pre style="margin: 0;"> <span id="LC1334" class="line" lang="haskell"> <span class="p">,</span> <span class="n" style="color: #333;">inner_res_ty</span> <span class="p">)</span> <span class="p">}</span></span>
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1302
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<pre style="margin: 0;">-<span id="LC1302" class="line" lang="haskell"><span class="idiff left"> </span><span class="kr" style="font-weight: 600;"><span class="idiff right">where</span></span></span>
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1303
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<pre style="margin: 0;">-<span id="LC1303" class="line" lang="haskell"> <span class="idiff left"> </span><span class="n" style="color: #333;"><span class="idiff">doc</span></span><span class="idiff"> </span><span class="o" style="font-weight: 600;"><span class="idiff">=</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">text</span></span><span class="idiff"> </span><span class="s" style="color: #d14;"><span class="idiff">"When checking the"</span></span><span class="idiff"> </span><span class="o" style="font-weight: 600;"><span class="idiff"><+></span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">speakNth</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">n</span></span><span class="idiff"> </span><span class="o" style="font-weight: 600;"><span class="idiff right"><+></span></span></span>
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1304
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<pre style="margin: 0;">-<span id="LC1304" class="line" lang="haskell"> <span class="idiff left"> </span><span class="n" style="color: #333;"><span class="idiff">text</span></span><span class="idiff"> </span><span class="s" style="color: #d14;"><span class="idiff">"argument to"</span></span><span class="idiff"> </span><span class="o" style="font-weight: 600;"><span class="idiff"><+></span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">quotes</span></span><span class="idiff"> </span><span class="p"><span class="idiff">(</span></span><span class="n" style="color: #333;"><span class="idiff">ppr</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">fun</span></span><span class="p"><span class="idiff right">)</span></span></span>
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1335
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<pre style="margin: 0;">+<span id="LC1335" class="line" lang="haskell"></span>
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1336
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<pre style="margin: 0;">+<span id="LC1336" class="line" lang="haskell"> <span class="n" style="color: #333;"><span class="idiff left">go'</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">n</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">fun_ty</span></span><span class="idiff"> </span><span class="p"><span class="idiff">(</span></span><span class="kt" style="color: #458; font-weight: 600;"><span class="idiff">HsArgWrap</span></span><span class="idiff"> </span><span class="p"><span class="idiff">{}</span></span><span class="idiff"> </span><span class="o" style="font-weight: 600;"><span class="idiff">:</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">args</span></span><span class="p"><span class="idiff right">)</span></span></span>
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<td class="diff-line-num new new_line" data-linenumber="1337" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
1337
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<pre style="margin: 0;">+<span id="LC1337" class="line" lang="haskell"> <span class="o" style="font-weight: 600;"><span class="idiff left">=</span></span><span class="idiff"> </span><span class="kr" style="font-weight: 600;"><span class="idiff">do</span></span><span class="idiff"> </span><span class="p"><span class="idiff">{</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">traceTc</span></span><span class="idiff"> </span><span class="s" style="color: #d14;"><span class="idiff">"tcArgs:wrap"</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">empty</span></span><span class="p"><span class="idiff">;</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">go</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">n</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">fun_ty</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">args</span></span><span class="idiff"> </span><span class="p"><span class="idiff right">}</span></span></span>
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1305
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1338
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<pre style="margin: 0;"> <span id="LC1338" class="line" lang="haskell"></span>
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1306
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1339
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<pre style="margin: 0;"> <span id="LC1339" class="line" lang="haskell"> <span class="n" style="color: #333;">ty_app_err</span> <span class="n" style="color: #333;">ty</span> <span class="n" style="color: #333;">arg</span></span>
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1307
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1340
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<pre style="margin: 0;"> <span id="LC1340" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">do</span> <span class="p">{</span> <span class="p">(</span><span class="kr" style="font-weight: 600;">_</span><span class="p">,</span> <span class="n" style="color: #333;">ty</span><span class="p">)</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">zonkTidyTcType</span> <span class="n" style="color: #333;">emptyTidyEnv</span> <span class="n" style="color: #333;">ty</span></span>
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<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -1393,14 +1426,20 @@ and we had the visible type application</td>
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<pre style="margin: 0;"> <span id="LC1426" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">----------------</span></span>
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1427
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<pre style="margin: 0;"> <span id="LC1427" class="line" lang="haskell"><span class="n" style="color: #333;">tcArg</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">LHsExpr</span> <span class="kt" style="color: #458; font-weight: 600;">GhcRn</span> <span class="c1" style="color: #998; font-style: italic;">-- The function (for error messages)</span></span>
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1395
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1428
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<pre style="margin: 0;"> <span id="LC1428" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">LHsExpr</span> <span class="kt" style="color: #458; font-weight: 600;">GhcRn</span> <span class="c1" style="color: #998; font-style: italic;">-- Actual arguments</span></span>
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1396
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<pre style="margin: 0;">-<span id="LC1396" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Tc<span class="idiff left">RhoType</span></span><span class="idiff right"> </span> <span class="c1" style="color: #998; font-style: italic;">-- expected arg type</span></span>
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1429
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<pre style="margin: 0;">+<span id="LC1429" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Tc<span class="idiff left right">SigmaType</span></span> <span class="c1" style="color: #998; font-style: italic;">-- expected arg type</span></span>
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1397
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1430
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<pre style="margin: 0;"> <span id="LC1430" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Int</span> <span class="c1" style="color: #998; font-style: italic;">-- # of argument</span></span>
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1398
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<pre style="margin: 0;">-<span id="LC1398" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TcM</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">LHsExpr</span> <span class="kt" style="color: #458; font-weight: 600;">GhcTcId</span><span class="p">)</span> <span class="c1" style="color: #998; font-style: italic;">-- Resulting argument</span></span>
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1399
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<pre style="margin: 0;">-<span id="LC1399" class="line" lang="haskell"><span class="n" style="color: #333;">tcArg</span> <span class="n" style="color: #333;">fun</span> <span class="n" style="color: #333;">arg</span> <span class="n" style="color: #333;">ty</span> <span class="n" style="color: #333;">arg_no</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">addErrCtxt</span> <span class="p">(</span><span class="n" style="color: #333;">funAppCtxt</span> <span class="n" style="color: #333;">fun</span> <span class="n" style="color: #333;">arg</span> <span class="n" style="color: #333;">arg_no</span><span class="p">)</span> <span class="o" style="font-weight: 600;">$</span></span>
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1400
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<pre style="margin: 0;">-<span id="LC1400" class="line" lang="haskell"> <span class="n" style="color: #333;">tcPolyExprNC</span> <span class="n" style="color: #333;">arg</span> <span class="n" style="color: #333;">ty</span></span>
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1431
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<pre style="margin: 0;">+<span id="LC1431" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TcM</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">LHsExpr</span> <span class="kt" style="color: #458; font-weight: 600;">GhcTc</span><span class="p">)</span> <span class="c1" style="color: #998; font-style: italic;">-- Resulting argument</span></span>
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1432
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<pre style="margin: 0;">+<span id="LC1432" class="line" lang="haskell"><span class="n" style="color: #333;">tcArg</span> <span class="n" style="color: #333;">fun</span> <span class="n" style="color: #333;">arg</span> <span class="n" style="color: #333;">ty</span> <span class="n" style="color: #333;">arg_no</span></span>
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1433
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<pre style="margin: 0;">+<span id="LC1433" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">addErrCtxt</span> <span class="p">(</span><span class="n" style="color: #333;">funAppCtxt</span> <span class="n" style="color: #333;">fun</span> <span class="n" style="color: #333;">arg</span> <span class="n" style="color: #333;">arg_no</span><span class="p">)</span> <span class="o" style="font-weight: 600;">$</span></span>
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<td class="diff-line-num new new_line" data-linenumber="1434" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
1434
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<pre style="margin: 0;">+<span id="LC1434" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">do</span> <span class="p">{</span> <span class="n" style="color: #333;">traceTc</span> <span class="s" style="color: #d14;">"tcArg {"</span> <span class="o" style="font-weight: 600;">$</span></span>
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1435
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<pre style="margin: 0;">+<span id="LC1435" class="line" lang="haskell"> <span class="n" style="color: #333;">vcat</span> <span class="p">[</span> <span class="n" style="color: #333;">text</span> <span class="s" style="color: #d14;">"arg #"</span> <span class="o" style="font-weight: 600;"><></span> <span class="n" style="color: #333;">ppr</span> <span class="n" style="color: #333;">arg_no</span> <span class="o" style="font-weight: 600;"><+></span> <span class="n" style="color: #333;">dcolon</span> <span class="o" style="font-weight: 600;"><+></span> <span class="n" style="color: #333;">ppr</span> <span class="n" style="color: #333;">ty</span></span>
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<td class="diff-line-num new new_line" data-linenumber="1436" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
1436
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<pre style="margin: 0;">+<span id="LC1436" class="line" lang="haskell"> <span class="p">,</span> <span class="n" style="color: #333;">text</span> <span class="s" style="color: #d14;">"arg:"</span> <span class="o" style="font-weight: 600;"><+></span> <span class="n" style="color: #333;">ppr</span> <span class="n" style="color: #333;">arg</span> <span class="p">]</span></span>
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1437
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<pre style="margin: 0;">+<span id="LC1437" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">arg'</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">tcPolyExprNC</span> <span class="n" style="color: #333;">arg</span> <span class="n" style="color: #333;">ty</span></span>
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1438
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<pre style="margin: 0;">+<span id="LC1438" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">traceTc</span> <span class="s" style="color: #d14;">"tcArg }"</span> <span class="n" style="color: #333;">empty</span></span>
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1439
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<pre style="margin: 0;">+<span id="LC1439" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">return</span> <span class="n" style="color: #333;">arg'</span> <span class="p">}</span></span>
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1401
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1440
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<pre style="margin: 0;"> <span id="LC1440" class="line" lang="haskell"></span>
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1441
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<pre style="margin: 0;"> <span id="LC1441" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">----------------</span></span>
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1403
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<pre style="margin: 0;">-<span id="LC1403" class="line" lang="haskell"><span class="n" style="color: #333;">tcTupArgs</span> <span class="o" style="font-weight: 600;">::</span> <span class="p">[</span><span class="kt" style="color: #458; font-weight: 600;">LHsTupArg</span> <span class="kt" style="color: #458; font-weight: 600;">GhcRn</span><span class="p">]</span> <span class="o" style="font-weight: 600;">-></span> <span class="p">[</span><span class="kt" style="color: #458; font-weight: 600;">TcSigmaType</span><span class="p">]</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TcM</span> <span class="p">[</span><span class="kt" style="color: #458; font-weight: 600;">LHsTupArg</span> <span class="kt" style="color: #458; font-weight: 600;">GhcTc<span class="idiff left right">Id</span></span><span class="p">]</span></span>
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<pre style="margin: 0;">+<span id="LC1442" class="line" lang="haskell"><span class="n" style="color: #333;">tcTupArgs</span> <span class="o" style="font-weight: 600;">::</span> <span class="p">[</span><span class="kt" style="color: #458; font-weight: 600;">LHsTupArg</span> <span class="kt" style="color: #458; font-weight: 600;">GhcRn</span><span class="p">]</span> <span class="o" style="font-weight: 600;">-></span> <span class="p">[</span><span class="kt" style="color: #458; font-weight: 600;">TcSigmaType</span><span class="p">]</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TcM</span> <span class="p">[</span><span class="kt" style="color: #458; font-weight: 600;">LHsTupArg</span> <span class="kt" style="color: #458; font-weight: 600;">GhcTc</span><span class="p">]</span></span>
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1404
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1443
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<pre style="margin: 0;"> <span id="LC1443" class="line" lang="haskell"><span class="n" style="color: #333;">tcTupArgs</span> <span class="n" style="color: #333;">args</span> <span class="n" style="color: #333;">tys</span></span>
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1405
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1444
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<pre style="margin: 0;"> <span id="LC1444" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">ASSERT</span><span class="p">(</span> <span class="n" style="color: #333;">equalLength</span> <span class="n" style="color: #333;">args</span> <span class="n" style="color: #333;">tys</span> <span class="p">)</span> <span class="n" style="color: #333;">mapM</span> <span class="n" style="color: #333;">go</span> <span class="p">(</span><span class="n" style="color: #333;">args</span> <span class="p">`</span><span class="n" style="color: #333;">zip</span><span class="p">`</span> <span class="n" style="color: #333;">tys</span><span class="p">)</span></span>
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1406
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1445
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<pre style="margin: 0;"> <span id="LC1445" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">where</span></span>
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<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -1611,7 +1650,7 @@ in the other order, the extra signature in f2 is reqd.</td>
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1611
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1650
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<pre style="margin: 0;"> <span id="LC1650" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">* *</span></span>
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1612
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1651
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<pre style="margin: 0;"> <span id="LC1651" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">********************************************************************* -}</span></span>
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1613
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1652
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<pre style="margin: 0;"> <span id="LC1652" class="line" lang="haskell"></span>
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1614
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<pre style="margin: 0;">-<span id="LC1614" class="line" lang="haskell"><span class="n" style="color: #333;">tcExprSig</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">LHsExpr</span> <span class="kt" style="color: #458; font-weight: 600;">GhcRn</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TcIdSigInfo</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TcM</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">LHsExpr</span> <span class="kt" style="color: #458; font-weight: 600;">GhcTc<span class="idiff left right">Id</span></span><span class="p">,</span> <span class="kt" style="color: #458; font-weight: 600;">TcType</span><span class="p">)</span></span>
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1653
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<pre style="margin: 0;">+<span id="LC1653" class="line" lang="haskell"><span class="n" style="color: #333;">tcExprSig</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">LHsExpr</span> <span class="kt" style="color: #458; font-weight: 600;">GhcRn</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TcIdSigInfo</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TcM</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">LHsExpr</span> <span class="kt" style="color: #458; font-weight: 600;">GhcTc</span><span class="p">,</span> <span class="kt" style="color: #458; font-weight: 600;">TcType</span><span class="p">)</span></span>
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1615
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1654
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<pre style="margin: 0;"> <span id="LC1654" class="line" lang="haskell"><span class="n" style="color: #333;">tcExprSig</span> <span class="n" style="color: #333;">expr</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">CompleteSig</span> <span class="p">{</span> <span class="n" style="color: #333;">sig_bndr</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">poly_id</span><span class="p">,</span> <span class="n" style="color: #333;">sig_loc</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">loc</span> <span class="p">})</span></span>
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1616
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1655
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<pre style="margin: 0;"> <span id="LC1655" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">setSrcSpan</span> <span class="n" style="color: #333;">loc</span> <span class="o" style="font-weight: 600;">$</span> <span class="c1" style="color: #998; font-style: italic;">-- Sets the location for the implication constraint</span></span>
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1617
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1656
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<pre style="margin: 0;"> <span id="LC1656" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">do</span> <span class="p">{</span> <span class="p">(</span><span class="n" style="color: #333;">tv_prs</span><span class="p">,</span> <span class="n" style="color: #333;">theta</span><span class="p">,</span> <span class="n" style="color: #333;">tau</span><span class="p">)</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">tcInstType</span> <span class="n" style="color: #333;">tcInstSkolTyVars</span> <span class="n" style="color: #333;">poly_id</span></span>
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<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -1706,18 +1745,23 @@ CLong, as it should.</td>
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1745
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<pre style="margin: 0;"> <span id="LC1745" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">* *</span></span>
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<pre style="margin: 0;"> <span id="LC1746" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">********************************************************************* -}</span></span>
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1747
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<pre style="margin: 0;"> <span id="LC1747" class="line" lang="haskell"></span>
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<pre style="margin: 0;">-<span id="LC1709" class="line" lang="haskell"><span class="n" style="color: #333;">tcCheckId</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">Name</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">ExpRhoType</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TcM</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">HsExpr</span> <span class="kt" style="color: #458; font-weight: 600;">GhcTc<span class="idiff left right">Id</span></span><span class="p">)</span></span>
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<pre style="margin: 0;">+<span id="LC1748" class="line" lang="haskell"><span class="n" style="color: #333;">tcCheckId</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">Name</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">ExpRhoType</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TcM</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">HsExpr</span> <span class="kt" style="color: #458; font-weight: 600;">GhcTc</span><span class="p">)</span></span>
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1710
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1749
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<pre style="margin: 0;"> <span id="LC1749" class="line" lang="haskell"><span class="n" style="color: #333;">tcCheckId</span> <span class="n" style="color: #333;">name</span> <span class="n" style="color: #333;">res_ty</span></span>
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1750
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<pre style="margin: 0;">+<span id="LC1750" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">|</span> <span class="n" style="color: #333;">name</span> <span class="p">`</span><span class="n" style="color: #333;">hasKey</span><span class="p">`</span> <span class="n" style="color: #333;">tagToEnumKey</span></span>
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1751
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<pre style="margin: 0;">+<span id="LC1751" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">failWithTc</span> <span class="p">(</span><span class="n" style="color: #333;">text</span> <span class="s" style="color: #d14;">"tagToEnum# must appear applied to one argument"</span><span class="p">)</span></span>
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1752
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<pre style="margin: 0;">+<span id="LC1752" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- tcApp catches the case (tagToEnum# arg)</span></span>
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1753
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<pre style="margin: 0;">+<span id="LC1753" class="line" lang="haskell"></span>
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1754
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<pre style="margin: 0;">+<span id="LC1754" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">|</span> <span class="n" style="color: #333;">otherwise</span></span>
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1711
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1755
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<pre style="margin: 0;"> <span id="LC1755" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">do</span> <span class="p">{</span> <span class="p">(</span><span class="n" style="color: #333;">expr</span><span class="p">,</span> <span class="n" style="color: #333;">actual_res_ty</span><span class="p">)</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">tcInferId</span> <span class="n" style="color: #333;">name</span></span>
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1712
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1756
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<pre style="margin: 0;"> <span id="LC1756" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">traceTc</span> <span class="s" style="color: #d14;">"tcCheckId"</span> <span class="p">(</span><span class="n" style="color: #333;">vcat</span> <span class="p">[</span><span class="n" style="color: #333;">ppr</span> <span class="n" style="color: #333;">name</span><span class="p">,</span> <span class="n" style="color: #333;">ppr</span> <span class="n" style="color: #333;">actual_res_ty</span><span class="p">,</span> <span class="n" style="color: #333;">ppr</span> <span class="n" style="color: #333;">res_ty</span><span class="p">])</span></span>
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1713
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<pre style="margin: 0;">-<span id="LC1713" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">addFunResCtxt</span> <span class="kt" style="color: #458; font-weight: 600;">False</span> <span class="p"><span class="idiff left">(</span></span><span class="kt" style="color: #458; font-weight: 600;"><span class="idiff">HsVar</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">noExtField</span></span><span class="idiff"> </span><span class="p"><span class="idiff">(</span></span><span class="n" style="color: #333;"><span class="idiff">noLoc</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">name</span></span><span class="p"><span class="idiff right">))</span></span> <span class="n" style="color: #333;">actual_res_ty</span> <span class="n" style="color: #333;">res_ty</span> <span class="o" style="font-weight: 600;">$</span></span>
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1757
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<pre style="margin: 0;">+<span id="LC1757" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">addFunResCtxt</span> <span class="kt" style="color: #458; font-weight: 600;">False</span> <span class="n" style="color: #333;"><span class="idiff left right">expr</span></span> <span class="n" style="color: #333;">actual_res_ty</span> <span class="n" style="color: #333;">res_ty</span> <span class="o" style="font-weight: 600;">$</span></span>
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1714
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1758
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<pre style="margin: 0;"> <span id="LC1758" class="line" lang="haskell"> <span class="n" style="color: #333;">tcWrapResultO</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">OccurrenceOf</span> <span class="n" style="color: #333;">name</span><span class="p">)</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">HsVar</span> <span class="n" style="color: #333;">noExtField</span> <span class="p">(</span><span class="n" style="color: #333;">noLoc</span> <span class="n" style="color: #333;">name</span><span class="p">))</span> <span class="n" style="color: #333;">expr</span></span>
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1715
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1759
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<pre style="margin: 0;"> <span id="LC1759" class="line" lang="haskell"> <span class="n" style="color: #333;">actual_res_ty</span> <span class="n" style="color: #333;">res_ty</span> <span class="p">}</span></span>
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1716
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1760
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<pre style="margin: 0;"> <span id="LC1760" class="line" lang="haskell"></span>
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1717
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<pre style="margin: 0;">-<span id="LC1717" class="line" lang="haskell"><span class="n" style="color: #333;">tcCheckRecSelId</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">HsExpr</span> <span class="kt" style="color: #458; font-weight: 600;">GhcRn</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">AmbiguousFieldOcc</span> <span class="kt" style="color: #458; font-weight: 600;">GhcRn</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">ExpRhoType</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TcM</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">HsExpr</span> <span class="kt" style="color: #458; font-weight: 600;">GhcTc<span class="idiff left right">Id</span></span><span class="p">)</span></span>
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1761
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<pre style="margin: 0;">+<span id="LC1761" class="line" lang="haskell"><span class="n" style="color: #333;">tcCheckRecSelId</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">HsExpr</span> <span class="kt" style="color: #458; font-weight: 600;">GhcRn</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">AmbiguousFieldOcc</span> <span class="kt" style="color: #458; font-weight: 600;">GhcRn</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">ExpRhoType</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TcM</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">HsExpr</span> <span class="kt" style="color: #458; font-weight: 600;">GhcTc</span><span class="p">)</span></span>
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1718
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1762
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<pre style="margin: 0;"> <span id="LC1762" class="line" lang="haskell"><span class="n" style="color: #333;">tcCheckRecSelId</span> <span class="n" style="color: #333;">rn_expr</span> <span class="n" style="color: #333;">f</span><span class="o" style="font-weight: 600;">@</span><span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Unambiguous</span> <span class="kr" style="font-weight: 600;">_</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">L</span> <span class="kr" style="font-weight: 600;">_</span> <span class="n" style="color: #333;">lbl</span><span class="p">))</span> <span class="n" style="color: #333;">res_ty</span></span>
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1719
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1763
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<pre style="margin: 0;"> <span id="LC1763" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">do</span> <span class="p">{</span> <span class="p">(</span><span class="n" style="color: #333;">expr</span><span class="p">,</span> <span class="n" style="color: #333;">actual_res_ty</span><span class="p">)</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">tcInferRecSelId</span> <span class="n" style="color: #333;">f</span></span>
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1720
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<pre style="margin: 0;">-<span id="LC1720" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">addFunResCtxt</span> <span class="kt" style="color: #458; font-weight: 600;">False</span> <span class="p"><span class="idiff left">(</span></span><span class="kt" style="color: #458; font-weight: 600;"><span class="idiff">HsRecFld</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">noExtField</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">f</span></span><span class="p"><span class="idiff right">)</span></span> <span class="n" style="color: #333;">actual_res_ty</span> <span class="n" style="color: #333;">res_ty</span> <span class="o" style="font-weight: 600;">$</span></span>
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<td class="diff-line-num new new_line" data-linenumber="1764" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
1764
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<pre style="margin: 0;">+<span id="LC1764" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">addFunResCtxt</span> <span class="kt" style="color: #458; font-weight: 600;">False</span> <span class="n" style="color: #333;"><span class="idiff left right">expr</span></span> <span class="n" style="color: #333;">actual_res_ty</span> <span class="n" style="color: #333;">res_ty</span> <span class="o" style="font-weight: 600;">$</span></span>
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1721
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1765
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<pre style="margin: 0;"> <span id="LC1765" class="line" lang="haskell"> <span class="n" style="color: #333;">tcWrapResultO</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">OccurrenceOfRecSel</span> <span class="n" style="color: #333;">lbl</span><span class="p">)</span> <span class="n" style="color: #333;">rn_expr</span> <span class="n" style="color: #333;">expr</span> <span class="n" style="color: #333;">actual_res_ty</span> <span class="n" style="color: #333;">res_ty</span> <span class="p">}</span></span>
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1722
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<td class="diff-line-num new_line" data-linenumber="1766" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">
1766
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<pre style="margin: 0;"> <span id="LC1766" class="line" lang="haskell"><span class="n" style="color: #333;">tcCheckRecSelId</span> <span class="n" style="color: #333;">rn_expr</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Ambiguous</span> <span class="kr" style="font-weight: 600;">_</span> <span class="n" style="color: #333;">lbl</span><span class="p">)</span> <span class="n" style="color: #333;">res_ty</span></span>
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<td class="diff-line-num old_line" data-linenumber="1723" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">
1723
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<td class="diff-line-num new_line" data-linenumber="1767" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">
1767
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<pre style="margin: 0;"> <span id="LC1767" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">case</span> <span class="n" style="color: #333;">tcSplitFunTy_maybe</span> <span class="o" style="font-weight: 600;">=<<</span> <span class="n" style="color: #333;">checkingExpType_maybe</span> <span class="n" style="color: #333;">res_ty</span> <span class="kr" style="font-weight: 600;">of</span></span>
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<td class="diff-line-num unfold js-unfold old_line" data-linenumber="1728" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>
<td class="diff-line-num unfold js-unfold new_line" data-linenumber="1772" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>
<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -1728,7 +1772,7 @@ tcCheckRecSelId rn_expr (Ambiguous _ lbl) res_ty</td>
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1728
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1772
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<pre style="margin: 0;"> <span id="LC1772" class="line" lang="haskell"><span class="n" style="color: #333;">tcCheckRecSelId</span> <span class="kr" style="font-weight: 600;">_</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">XAmbiguousFieldOcc</span> <span class="n" style="color: #333;">nec</span><span class="p">)</span> <span class="kr" style="font-weight: 600;">_</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">noExtCon</span> <span class="n" style="color: #333;">nec</span></span>
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1729
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1773
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<pre style="margin: 0;"> <span id="LC1773" class="line" lang="haskell"></span>
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1730
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1774
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<pre style="margin: 0;"> <span id="LC1774" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">------------------------</span></span>
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1731
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<pre style="margin: 0;">-<span id="LC1731" class="line" lang="haskell"><span class="n" style="color: #333;">tcInferRecSelId</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">AmbiguousFieldOcc</span> <span class="kt" style="color: #458; font-weight: 600;">GhcRn</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TcM</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">HsExpr</span> <span class="kt" style="color: #458; font-weight: 600;">GhcTc<span class="idiff left right">Id</span></span><span class="p">,</span> <span class="kt" style="color: #458; font-weight: 600;">TcRhoType</span><span class="p">)</span></span>
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1775
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<pre style="margin: 0;">+<span id="LC1775" class="line" lang="haskell"><span class="n" style="color: #333;">tcInferRecSelId</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">AmbiguousFieldOcc</span> <span class="kt" style="color: #458; font-weight: 600;">GhcRn</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TcM</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">HsExpr</span> <span class="kt" style="color: #458; font-weight: 600;">GhcTc</span><span class="p">,</span> <span class="kt" style="color: #458; font-weight: 600;">TcRhoType</span><span class="p">)</span></span>
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1732
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<td class="diff-line-num new_line" data-linenumber="1776" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">
1776
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<pre style="margin: 0;"> <span id="LC1776" class="line" lang="haskell"><span class="n" style="color: #333;">tcInferRecSelId</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Unambiguous</span> <span class="n" style="color: #333;">sel</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">L</span> <span class="kr" style="font-weight: 600;">_</span> <span class="n" style="color: #333;">lbl</span><span class="p">))</span></span>
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<td class="diff-line-num old_line" data-linenumber="1733" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">
1733
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1777
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<pre style="margin: 0;"> <span id="LC1777" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">do</span> <span class="p">{</span> <span class="p">(</span><span class="n" style="color: #333;">expr'</span><span class="p">,</span> <span class="n" style="color: #333;">ty</span><span class="p">)</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">tc_infer_id</span> <span class="n" style="color: #333;">lbl</span> <span class="n" style="color: #333;">sel</span></span>
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<td class="diff-line-num old_line" data-linenumber="1734" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">
1734
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<td class="diff-line-num new_line" data-linenumber="1778" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">
1778
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<pre style="margin: 0;"> <span id="LC1778" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">return</span> <span class="p">(</span><span class="n" style="color: #333;">expr'</span><span class="p">,</span> <span class="n" style="color: #333;">ty</span><span class="p">)</span> <span class="p">}</span></span>
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<td class="diff-line-num unfold js-unfold old_line" data-linenumber="1737" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>
<td class="diff-line-num unfold js-unfold new_line" data-linenumber="1781" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>
<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -1737,14 +1781,10 @@ tcInferRecSelId (Ambiguous _ lbl)</td>
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1737
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1781
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<pre style="margin: 0;"> <span id="LC1781" class="line" lang="haskell"><span class="n" style="color: #333;">tcInferRecSelId</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">XAmbiguousFieldOcc</span> <span class="n" style="color: #333;">nec</span><span class="p">)</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">noExtCon</span> <span class="n" style="color: #333;">nec</span></span>
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1738
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1782
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<pre style="margin: 0;"> <span id="LC1782" class="line" lang="haskell"></span>
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1739
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<td class="diff-line-num new_line" data-linenumber="1783" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">
1783
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<pre style="margin: 0;"> <span id="LC1783" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">------------------------</span></span>
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1740
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<pre style="margin: 0;">-<span id="LC1740" class="line" lang="haskell"><span class="n" style="color: #333;">tcInferId</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">Name</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TcM</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">HsExpr</span> <span class="kt" style="color: #458; font-weight: 600;">GhcTc<span class="idiff left right">Id</span></span><span class="p">,</span> <span class="kt" style="color: #458; font-weight: 600;">TcSigmaType</span><span class="p">)</span></span>
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<pre style="margin: 0;">+<span id="LC1784" class="line" lang="haskell"><span class="n" style="color: #333;">tcInferId</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">Name</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TcM</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">HsExpr</span> <span class="kt" style="color: #458; font-weight: 600;">GhcTc</span><span class="p">,</span> <span class="kt" style="color: #458; font-weight: 600;">TcSigmaType</span><span class="p">)</span></span>
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1785
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<pre style="margin: 0;"> <span id="LC1785" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- Look up an occurrence of an Id</span></span>
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1786
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<pre style="margin: 0;"> <span id="LC1786" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- Do not instantiate its type</span></span>
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1787
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<pre style="margin: 0;"> <span id="LC1787" class="line" lang="haskell"><span class="n" style="color: #333;">tcInferId</span> <span class="n" style="color: #333;">id_name</span></span>
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1744
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<pre style="margin: 0;">-<span id="LC1744" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">|</span> <span class="n" style="color: #333;">id_name</span> <span class="p">`</span><span class="n" style="color: #333;">hasKey</span><span class="p">`</span> <span class="n" style="color: #333;">tagToEnumKey</span></span>
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1745
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<pre style="margin: 0;">-<span id="LC1745" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">failWithTc</span> <span class="p">(</span><span class="n" style="color: #333;">text</span> <span class="s" style="color: #d14;">"tagToEnum# must appear applied to one argument"</span><span class="p">)</span></span>
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1746
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<pre style="margin: 0;">-<span id="LC1746" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- tcApp catches the case (tagToEnum# arg)</span></span>
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1747
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<pre style="margin: 0;">-<span id="LC1747" class="line" lang="haskell"></span>
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1748
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1788
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<pre style="margin: 0;"> <span id="LC1788" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">|</span> <span class="n" style="color: #333;">id_name</span> <span class="p">`</span><span class="n" style="color: #333;">hasKey</span><span class="p">`</span> <span class="n" style="color: #333;">assertIdKey</span></span>
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1749
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1789
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<pre style="margin: 0;"> <span id="LC1789" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">do</span> <span class="p">{</span> <span class="n" style="color: #333;">dflags</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">getDynFlags</span></span>
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1790
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<pre style="margin: 0;"> <span id="LC1790" class="line" lang="haskell"> <span class="p">;</span> <span class="kr" style="font-weight: 600;">if</span> <span class="n" style="color: #333;">gopt</span> <span class="kt" style="color: #458; font-weight: 600;">Opt_IgnoreAsserts</span> <span class="n" style="color: #333;">dflags</span></span>
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<td class="diff-line-num unfold js-unfold new_line" data-linenumber="1796" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>
<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -1756,7 +1796,7 @@ tcInferId id_name</td>
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1756
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1796
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<pre style="margin: 0;"> <span id="LC1796" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">traceTc</span> <span class="s" style="color: #d14;">"tcInferId"</span> <span class="p">(</span><span class="n" style="color: #333;">ppr</span> <span class="n" style="color: #333;">id_name</span> <span class="o" style="font-weight: 600;"><+></span> <span class="n" style="color: #333;">dcolon</span> <span class="o" style="font-weight: 600;"><+></span> <span class="n" style="color: #333;">ppr</span> <span class="n" style="color: #333;">ty</span><span class="p">)</span></span>
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1757
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1797
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<pre style="margin: 0;"> <span id="LC1797" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">return</span> <span class="p">(</span><span class="n" style="color: #333;">expr</span><span class="p">,</span> <span class="n" style="color: #333;">ty</span><span class="p">)</span> <span class="p">}</span></span>
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1758
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1798
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<pre style="margin: 0;"> <span id="LC1798" class="line" lang="haskell"></span>
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1759
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<pre style="margin: 0;">-<span id="LC1759" class="line" lang="haskell"><span class="n" style="color: #333;">tc_infer_assert</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">Name</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TcM</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">HsExpr</span> <span class="kt" style="color: #458; font-weight: 600;">GhcTc<span class="idiff left right">Id</span></span><span class="p">,</span> <span class="kt" style="color: #458; font-weight: 600;">TcSigmaType</span><span class="p">)</span></span>
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1799
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<pre style="margin: 0;">+<span id="LC1799" class="line" lang="haskell"><span class="n" style="color: #333;">tc_infer_assert</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">Name</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TcM</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">HsExpr</span> <span class="kt" style="color: #458; font-weight: 600;">GhcTc</span><span class="p">,</span> <span class="kt" style="color: #458; font-weight: 600;">TcSigmaType</span><span class="p">)</span></span>
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1760
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1800
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<pre style="margin: 0;"> <span id="LC1800" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- Deal with an occurrence of 'assert'</span></span>
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1761
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1801
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<pre style="margin: 0;"> <span id="LC1801" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- See Note [Adding the implicit parameter to 'assert']</span></span>
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1762
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1802
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<pre style="margin: 0;"> <span id="LC1802" class="line" lang="haskell"><span class="n" style="color: #333;">tc_infer_assert</span> <span class="n" style="color: #333;">assert_name</span></span>
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<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -1766,7 +1806,7 @@ tc_infer_assert assert_name</td>
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1766
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<pre style="margin: 0;"> <span id="LC1806" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">return</span> <span class="p">(</span><span class="n" style="color: #333;">mkHsWrap</span> <span class="n" style="color: #333;">wrap</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">HsVar</span> <span class="n" style="color: #333;">noExtField</span> <span class="p">(</span><span class="n" style="color: #333;">noLoc</span> <span class="n" style="color: #333;">assert_error_id</span><span class="p">)),</span> <span class="n" style="color: #333;">id_rho</span><span class="p">)</span></span>
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1767
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1807
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<pre style="margin: 0;"> <span id="LC1807" class="line" lang="haskell"> <span class="p">}</span></span>
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1768
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1808
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<pre style="margin: 0;"> <span id="LC1808" class="line" lang="haskell"></span>
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1769
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<pre style="margin: 0;">-<span id="LC1769" class="line" lang="haskell"><span class="n" style="color: #333;">tc_infer_id</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">RdrName</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Name</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TcM</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">HsExpr</span> <span class="kt" style="color: #458; font-weight: 600;">GhcTc<span class="idiff left right">Id</span></span><span class="p">,</span> <span class="kt" style="color: #458; font-weight: 600;">TcSigmaType</span><span class="p">)</span></span>
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1809
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<pre style="margin: 0;">+<span id="LC1809" class="line" lang="haskell"><span class="n" style="color: #333;">tc_infer_id</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">RdrName</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Name</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TcM</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">HsExpr</span> <span class="kt" style="color: #458; font-weight: 600;">GhcTc</span><span class="p">,</span> <span class="kt" style="color: #458; font-weight: 600;">TcSigmaType</span><span class="p">)</span></span>
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1770
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1810
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<pre style="margin: 0;"> <span id="LC1810" class="line" lang="haskell"><span class="n" style="color: #333;">tc_infer_id</span> <span class="n" style="color: #333;">lbl</span> <span class="n" style="color: #333;">id_name</span></span>
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1771
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1811
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<pre style="margin: 0;"> <span id="LC1811" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">do</span> <span class="p">{</span> <span class="n" style="color: #333;">thing</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">tcLookup</span> <span class="n" style="color: #333;">id_name</span></span>
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1772
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1812
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<pre style="margin: 0;"> <span id="LC1812" class="line" lang="haskell"> <span class="p">;</span> <span class="kr" style="font-weight: 600;">case</span> <span class="n" style="color: #333;">thing</span> <span class="kr" style="font-weight: 600;">of</span></span>
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<td class="diff-line-num unfold js-unfold old_line" data-linenumber="1817" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>
<td class="diff-line-num unfold js-unfold new_line" data-linenumber="1857" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>
<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -1817,7 +1857,7 @@ tc_infer_id lbl id_name</td>
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1817
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1857
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<pre style="margin: 0;"> <span id="LC1857" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">|</span> <span class="n" style="color: #333;">otherwise</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">return</span> <span class="nb" style="color: #0086b3;">()</span></span>
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1818
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1858
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<pre style="margin: 0;"> <span id="LC1858" class="line" lang="haskell"></span>
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1819
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1859
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<pre style="margin: 0;"> <span id="LC1859" class="line" lang="haskell"></span>
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1820
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<pre style="margin: 0;">-<span id="LC1820" class="line" lang="haskell"><span class="n" style="color: #333;">tcUnboundId</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">HsExpr</span> <span class="kt" style="color: #458; font-weight: 600;">GhcRn</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">OccName</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">ExpRhoType</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TcM</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">HsExpr</span> <span class="kt" style="color: #458; font-weight: 600;">GhcTc<span class="idiff left right">Id</span></span><span class="p">)</span></span>
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1860
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<pre style="margin: 0;">+<span id="LC1860" class="line" lang="haskell"><span class="n" style="color: #333;">tcUnboundId</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">HsExpr</span> <span class="kt" style="color: #458; font-weight: 600;">GhcRn</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">OccName</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">ExpRhoType</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TcM</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">HsExpr</span> <span class="kt" style="color: #458; font-weight: 600;">GhcTc</span><span class="p">)</span></span>
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1821
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1861
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<pre style="margin: 0;"> <span id="LC1861" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- Typecheck an occurrence of an unbound Id</span></span>
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1822
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1862
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<pre style="margin: 0;"> <span id="LC1862" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">--</span></span>
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1823
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1863
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<pre style="margin: 0;"> <span id="LC1863" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- Some of these started life as a true expression hole "_".</span></span>
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<td class="diff-line-num unfold js-unfold new_line" data-linenumber="1926" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>
<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -1886,60 +1926,50 @@ the users that complain.</td>
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1886
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1926
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<pre style="margin: 0;"> <span id="LC1926" class="line" lang="haskell"></span>
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1887
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1927
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<pre style="margin: 0;"> <span id="LC1927" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">-}</span></span>
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1888
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1928
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<pre style="margin: 0;"> <span id="LC1928" class="line" lang="haskell"></span>
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1889
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<pre style="margin: 0;">-<span id="LC1889" class="line" lang="haskell"><span class="n" style="color: #333;">tcTagToEnum</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">SrcSpan</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Name</span> <span class="o" style="font-weight: 600;">-></span> <span class="p">[</span><span class="kt" style="color: #458; font-weight: 600;">LHsExprArgIn</span><span class="p">]</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">ExpRhoType</span></span>
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1890
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<pre style="margin: 0;">-<span id="LC1890" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TcM</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">HsWrapper</span><span class="p">,</span> <span class="kt" style="color: #458; font-weight: 600;">LHsExpr</span> <span class="kt" style="color: #458; font-weight: 600;">GhcTcId</span><span class="p">,</span> <span class="p">[</span><span class="kt" style="color: #458; font-weight: 600;">LHsExprArgOut</span><span class="p">])</span></span>
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1929
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<pre style="margin: 0;">+<span id="LC1929" class="line" lang="haskell"><span class="n" style="color: #333;">isTagToEnum</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">LHsExpr</span> <span class="kt" style="color: #458; font-weight: 600;">GhcTc</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Bool</span></span>
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1930
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<pre style="margin: 0;">+<span id="LC1930" class="line" lang="haskell"><span class="n" style="color: #333;">isTagToEnum</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">L</span> <span class="kr" style="font-weight: 600;">_</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">HsVar</span> <span class="kr" style="font-weight: 600;">_</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">L</span> <span class="kr" style="font-weight: 600;">_</span> <span class="n" style="color: #333;">fun_id</span><span class="p">)))</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">fun_id</span> <span class="p">`</span><span class="n" style="color: #333;">hasKey</span><span class="p">`</span> <span class="n" style="color: #333;">tagToEnumKey</span></span>
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1931
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<pre style="margin: 0;">+<span id="LC1931" class="line" lang="haskell"><span class="n" style="color: #333;">isTagToEnum</span> <span class="kr" style="font-weight: 600;">_</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">False</span></span>
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1932
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<pre style="margin: 0;">+<span id="LC1932" class="line" lang="haskell"></span>
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1933
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<pre style="margin: 0;">+<span id="LC1933" class="line" lang="haskell"><span class="n" style="color: #333;">tcTagToEnum</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">HsExpr</span> <span class="kt" style="color: #458; font-weight: 600;">GhcRn</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">LHsExpr</span> <span class="kt" style="color: #458; font-weight: 600;">GhcTc</span> <span class="o" style="font-weight: 600;">-></span> <span class="p">[</span><span class="kt" style="color: #458; font-weight: 600;">LHsExprArgOut</span><span class="p">]</span></span>
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1934
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<pre style="margin: 0;">+<span id="LC1934" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TcSigmaType</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">ExpRhoType</span></span>
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1935
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<pre style="margin: 0;">+<span id="LC1935" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TcM</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">HsExpr</span> <span class="kt" style="color: #458; font-weight: 600;">GhcTc</span><span class="p">)</span></span>
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1891
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1936
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<pre style="margin: 0;"> <span id="LC1936" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- tagToEnum# :: forall a. Int# -> a</span></span>
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1892
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1937
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<pre style="margin: 0;"> <span id="LC1937" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- See Note [tagToEnum#] Urgh!</span></span>
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1893
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<pre style="margin: 0;">-<span id="LC1893" class="line" lang="haskell"><span class="n" style="color: #333;">tcTagToEnum</span> <span class="n" style="color: #333;">loc</span> <span class="n" style="color: #333;">fun_name</span> <span class="n" style="color: #333;">args</span> <span class="n" style="color: #333;">res_ty</span></span>
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1894
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<pre style="margin: 0;">-<span id="LC1894" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">do</span> <span class="p">{</span> <span class="n" style="color: #333;">fun</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">tcLookupId</span> <span class="n" style="color: #333;">fun_name</span></span>
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1895
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<pre style="margin: 0;">-<span id="LC1895" class="line" lang="haskell"></span>
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1896
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<pre style="margin: 0;">-<span id="LC1896" class="line" lang="haskell"> <span class="p">;</span> <span class="kr" style="font-weight: 600;">let</span> <span class="n" style="color: #333;">pars1</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">mapMaybe</span> <span class="n" style="color: #333;">isArgPar_maybe</span> <span class="n" style="color: #333;">before</span></span>
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1897
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<pre style="margin: 0;">-<span id="LC1897" class="line" lang="haskell"> <span class="n" style="color: #333;">pars2</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">mapMaybe</span> <span class="n" style="color: #333;">isArgPar_maybe</span> <span class="n" style="color: #333;">after</span></span>
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1898
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<pre style="margin: 0;">-<span id="LC1898" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- args contains exactly one HsValArg</span></span>
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1899
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<pre style="margin: 0;">-<span id="LC1899" class="line" lang="haskell"> <span class="p">(</span><span class="n" style="color: #333;">before</span><span class="p">,</span> <span class="kr" style="font-weight: 600;">_</span><span class="o" style="font-weight: 600;">:</span><span class="n" style="color: #333;">after</span><span class="p">)</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">break</span> <span class="n" style="color: #333;">isHsValArg</span> <span class="n" style="color: #333;">args</span></span>
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1900
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<pre style="margin: 0;">-<span id="LC1900" class="line" lang="haskell"></span>
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1901
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<pre style="margin: 0;">-<span id="LC1901" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">arg</span> <span class="o" style="font-weight: 600;"><-</span> <span class="kr" style="font-weight: 600;">case</span> <span class="n" style="color: #333;">filterOut</span> <span class="n" style="color: #333;">isArgPar</span> <span class="n" style="color: #333;">args</span> <span class="kr" style="font-weight: 600;">of</span></span>
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1902
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<pre style="margin: 0;">-<span id="LC1902" class="line" lang="haskell"> <span class="p">[</span><span class="kt" style="color: #458; font-weight: 600;">HsTypeArg</span> <span class="kr" style="font-weight: 600;">_</span> <span class="n" style="color: #333;">hs_ty_arg</span><span class="p">,</span> <span class="kt" style="color: #458; font-weight: 600;">HsValArg</span> <span class="n" style="color: #333;">term_arg</span><span class="p">]</span></span>
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1903
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<pre style="margin: 0;">-<span id="LC1903" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">-></span> <span class="kr" style="font-weight: 600;">do</span> <span class="p">{</span> <span class="n" style="color: #333;">ty_arg</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">tcHsTypeApp</span> <span class="n" style="color: #333;">hs_ty_arg</span> <span class="n" style="color: #333;">liftedTypeKind</span></span>
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1904
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<pre style="margin: 0;">-<span id="LC1904" class="line" lang="haskell"> <span class="p">;</span> <span class="kr" style="font-weight: 600;">_</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">tcSubTypeDS</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">OccurrenceOf</span> <span class="n" style="color: #333;">fun_name</span><span class="p">)</span> <span class="kt" style="color: #458; font-weight: 600;">GenSigCtxt</span> <span class="n" style="color: #333;">ty_arg</span> <span class="n" style="color: #333;">res_ty</span></span>
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1905
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<pre style="margin: 0;">-<span id="LC1905" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- other than influencing res_ty, we just</span></span>
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1906
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<pre style="margin: 0;">-<span id="LC1906" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- don't care about a type arg passed in.</span></span>
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1907
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<pre style="margin: 0;">-<span id="LC1907" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- So drop the evidence.</span></span>
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1908
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<pre style="margin: 0;">-<span id="LC1908" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">return</span> <span class="n" style="color: #333;">term_arg</span> <span class="p">}</span></span>
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1909
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<pre style="margin: 0;">-<span id="LC1909" class="line" lang="haskell"> <span class="p">[</span><span class="kt" style="color: #458; font-weight: 600;">HsValArg</span> <span class="n" style="color: #333;">term_arg</span><span class="p">]</span> <span class="o" style="font-weight: 600;">-></span> <span class="kr" style="font-weight: 600;">do</span> <span class="p">{</span> <span class="kr" style="font-weight: 600;">_</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">expTypeToType</span> <span class="n" style="color: #333;">res_ty</span></span>
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1910
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<pre style="margin: 0;">-<span id="LC1910" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">return</span> <span class="n" style="color: #333;">term_arg</span> <span class="p">}</span></span>
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1911
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<pre style="margin: 0;">-<span id="LC1911" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">_</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">too_many_args</span> <span class="s" style="color: #d14;">"tagToEnum#"</span> <span class="n" style="color: #333;">args</span></span>
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1912
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<pre style="margin: 0;">-<span id="LC1912" class="line" lang="haskell"></span>
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1913
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<pre style="margin: 0;">-<span id="LC1913" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">res_ty</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">readExpType</span> <span class="n" style="color: #333;">res_ty</span></span>
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1938
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<pre style="margin: 0;">+<span id="LC1938" class="line" lang="haskell"><span class="n" style="color: #333;">tcTagToEnum</span> <span class="n" style="color: #333;">expr</span> <span class="n" style="color: #333;">fun</span> <span class="n" style="color: #333;">args</span> <span class="n" style="color: #333;">app_res_ty</span> <span class="n" style="color: #333;">res_ty</span></span>
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1939
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<pre style="margin: 0;">+<span id="LC1939" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">do</span> <span class="p">{</span> <span class="n" style="color: #333;">res_ty</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">readExpType</span> <span class="n" style="color: #333;">res_ty</span></span>
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1914
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1940
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<pre style="margin: 0;"> <span id="LC1940" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">ty'</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">zonkTcType</span> <span class="n" style="color: #333;">res_ty</span></span>
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1915
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1941
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<pre style="margin: 0;"> <span id="LC1941" class="line" lang="haskell"></span>
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1916
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1942
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<pre style="margin: 0;"> <span id="LC1942" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- Check that the type is algebraic</span></span>
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1917
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<pre style="margin: 0;">-<span id="LC1917" class="line" lang="haskell"> <span class="p">;</span> <span class="kr" style="font-weight: 600;"><span class="idiff left">let</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">mb_tc_app</span></span><span class="idiff"> </span><span class="o" style="font-weight: 600;"><span class="idiff">=</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">tcSplitTyConApp_maybe</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff right">ty'</span></span></span>
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1918
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<pre style="margin: 0;">-<span id="LC1918" class="line" lang="haskell"> <span class="idiff left"> </span><span class="kt" style="color: #458; font-weight: 600;"><span class="idiff">Just</span></span><span class="idiff"> </span><span class="p"><span class="idiff">(</span></span><span class="n" style="color: #333;"><span class="idiff">tc</span></span><span class="p"><span class="idiff">,</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">tc_args</span></span><span class="p"><span class="idiff">)</span></span><span class="idiff"> </span><span class="o" style="font-weight: 600;"><span class="idiff">=</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff right">mb_tc_app</span></span></span>
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1919
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<pre style="margin: 0;">-<span id="LC1919" class="line" lang="haskell"> <span class="p"><span class="idiff left">;</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">checkTc</span></span><span class="idiff"> </span><span class="p"><span class="idiff">(</span></span><span class="n" style="color: #333;"><span class="idiff">isJust</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">mb_tc_app</span></span><span class="p"><span class="idiff right">)</span></span></span>
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1920
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<pre style="margin: 0;">-<span id="LC1920" class="line" lang="haskell"> <span class="idiff left"> </span><span class="p"><span class="idiff">(</span></span><span class="n" style="color: #333;"><span class="idiff">mk_error</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">ty'</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">doc1</span></span><span class="p"><span class="idiff right">)</span></span></span>
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1943
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<pre style="margin: 0;">+<span id="LC1943" class="line" lang="haskell"> <span class="p">;</span> <span class="kr" style="font-weight: 600;"><span class="idiff left">case</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">tcSplitTyConApp_maybe</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">ty'</span></span><span class="idiff"> </span><span class="kr" style="font-weight: 600;"><span class="idiff">of</span></span><span class="idiff"> </span><span class="p"><span class="idiff right">{</span></span></span>
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1944
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<pre style="margin: 0;">+<span id="LC1944" class="line" lang="haskell"> <span class="kt" style="color: #458; font-weight: 600;"><span class="idiff left">Nothing</span></span><span class="idiff"> </span><span class="o" style="font-weight: 600;"><span class="idiff">-></span></span><span class="idiff"> </span><span class="kr" style="font-weight: 600;"><span class="idiff">do</span></span><span class="idiff"> </span><span class="p"><span class="idiff">{</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">addErrTc</span></span><span class="idiff"> </span><span class="p"><span class="idiff">(</span></span><span class="n" style="color: #333;"><span class="idiff">mk_error</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">ty'</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">doc1</span></span><span class="p"><span class="idiff right">)</span></span></span>
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1945
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<pre style="margin: 0;">+<span id="LC1945" class="line" lang="haskell"> <span class="idiff left"> </span><span class="p"><span class="idiff">;</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">vanilla_result</span></span><span class="idiff"> </span><span class="p"><span class="idiff">}</span></span><span class="idiff"> </span><span class="p"><span class="idiff right">;</span></span></span>
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<td class="diff-line-num new new_line" data-linenumber="1946" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
1946
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<pre style="margin: 0;">+<span id="LC1946" class="line" lang="haskell"> <span class="kt" style="color: #458; font-weight: 600;"><span class="idiff left">Just</span></span><span class="idiff"> </span><span class="p"><span class="idiff">(</span></span><span class="n" style="color: #333;"><span class="idiff">tc</span></span><span class="p"><span class="idiff">,</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">tc_args</span></span><span class="p"><span class="idiff">)</span></span><span class="idiff"> </span><span class="o" style="font-weight: 600;"><span class="idiff right">-></span></span></span>
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1921
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1947
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<pre style="margin: 0;"> <span id="LC1947" class="line" lang="haskell"></span>
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1922
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<pre style="margin: 0;">-<span id="LC1922" class="line" lang="haskell"> <span class="idiff left right"> </span> <span class="c1" style="color: #998; font-style: italic;">-- Look through any type family</span></span>
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1948
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<pre style="margin: 0;">+<span id="LC1948" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;"><span class="idiff left">do</span></span><span class="idiff"> </span><span class="p"><span class="idiff right">{</span></span> <span class="c1" style="color: #998; font-style: italic;">-- Look through any type family</span></span>
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1923
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1949
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<pre style="margin: 0;"> <span id="LC1949" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">fam_envs</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">tcGetFamInstEnvs</span></span>
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1924
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<pre style="margin: 0;">-<span id="LC1924" class="line" lang="haskell"> <span class="p">;</span> <span class="kr" style="font-weight: 600;">let</span> <span class="p">(</span><span class="n" style="color: #333;">rep_tc</span><span class="p">,</span> <span class="n" style="color: #333;">rep_args</span><span class="p">,</span> <span class="n" style="color: #333;">coi</span><span class="p">)</span></span>
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1925
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<pre style="margin: 0;">-<span id="LC1925" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">tcLookupDataFamInst</span> <span class="n" style="color: #333;">fam_envs</span> <span class="n" style="color: #333;">tc</span> <span class="n" style="color: #333;">tc_args</span></span>
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1926
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<pre style="margin: 0;">-<span id="LC1926" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- coi :: tc tc_args ~R rep_tc rep_args</span></span>
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1927
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<pre style="margin: 0;">-<span id="LC1927" class="line" lang="haskell"></span>
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1928
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<pre style="margin: 0;">-<span id="LC1928" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">checkTc</span> <span class="p">(</span><span class="n" style="color: #333;">isEnumerationTyCon</span> <span class="n" style="color: #333;">rep_tc</span><span class="p">)</span></span>
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1929
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<pre style="margin: 0;">-<span id="LC1929" class="line" lang="haskell"> <span class="p">(</span><span class="n" style="color: #333;">mk_error</span> <span class="n" style="color: #333;">ty'</span> <span class="n" style="color: #333;">doc2</span><span class="p">)</span></span>
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1930
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<pre style="margin: 0;">-<span id="LC1930" class="line" lang="haskell"></span>
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1931
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<pre style="margin: 0;">-<span id="LC1931" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">arg'</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">tcMonoExpr</span> <span class="n" style="color: #333;">arg</span> <span class="p">(</span><span class="n" style="color: #333;">mkCheckExpType</span> <span class="n" style="color: #333;">intPrimTy</span><span class="p">)</span></span>
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1932
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<pre style="margin: 0;">-<span id="LC1932" class="line" lang="haskell"> <span class="p">;</span> <span class="kr" style="font-weight: 600;">let</span> <span class="n" style="color: #333;">fun'</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">L</span> <span class="n" style="color: #333;">loc</span> <span class="p">(</span><span class="n" style="color: #333;">mkHsWrap</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">WpTyApp</span> <span class="n" style="color: #333;">rep_ty</span><span class="p">)</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">HsVar</span> <span class="n" style="color: #333;">noExtField</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">L</span> <span class="n" style="color: #333;">loc</span> <span class="n" style="color: #333;">fun</span><span class="p">)))</span></span>
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1933
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<pre style="margin: 0;">-<span id="LC1933" class="line" lang="haskell"> <span class="n" style="color: #333;">rep_ty</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">mkTyConApp</span> <span class="n" style="color: #333;">rep_tc</span> <span class="n" style="color: #333;">rep_args</span></span>
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1934
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<pre style="margin: 0;">-<span id="LC1934" class="line" lang="haskell"> <span class="n" style="color: #333;">out_args</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">concat</span></span>
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1935
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<pre style="margin: 0;">-<span id="LC1935" class="line" lang="haskell"> <span class="p">[</span> <span class="n" style="color: #333;">pars1</span></span>
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1936
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<pre style="margin: 0;">-<span id="LC1936" class="line" lang="haskell"> <span class="p">,</span> <span class="p">[</span><span class="kt" style="color: #458; font-weight: 600;">HsValArg</span> <span class="n" style="color: #333;">arg'</span><span class="p">]</span></span>
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1937
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<pre style="margin: 0;">-<span id="LC1937" class="line" lang="haskell"> <span class="p">,</span> <span class="n" style="color: #333;">pars2</span></span>
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1938
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<pre style="margin: 0;">-<span id="LC1938" class="line" lang="haskell"> <span class="p">]</span></span>
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1939
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<pre style="margin: 0;">-<span id="LC1939" class="line" lang="haskell"></span>
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1940
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<pre style="margin: 0;">-<span id="LC1940" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">return</span> <span class="p">(</span><span class="n" style="color: #333;">mkWpCastR</span> <span class="p">(</span><span class="n" style="color: #333;">mkTcSymCo</span> <span class="n" style="color: #333;">coi</span><span class="p">),</span> <span class="n" style="color: #333;">fun'</span><span class="p">,</span> <span class="n" style="color: #333;">out_args</span><span class="p">)</span> <span class="p">}</span></span>
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1941
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<pre style="margin: 0;">-<span id="LC1941" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- coi is a Representational coercion</span></span>
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1950
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<pre style="margin: 0;">+<span id="LC1950" class="line" lang="haskell"> <span class="p">;</span> <span class="kr" style="font-weight: 600;">case</span> <span class="n" style="color: #333;">tcLookupDataFamInst_maybe</span> <span class="n" style="color: #333;">fam_envs</span> <span class="n" style="color: #333;">tc</span> <span class="n" style="color: #333;">tc_args</span> <span class="kr" style="font-weight: 600;">of</span> <span class="p">{</span></span>
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1951
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<pre style="margin: 0;">+<span id="LC1951" class="line" lang="haskell"> <span class="kt" style="color: #458; font-weight: 600;">Nothing</span> <span class="o" style="font-weight: 600;">-></span> <span class="kr" style="font-weight: 600;">do</span> <span class="p">{</span> <span class="n" style="color: #333;">check_enumeration</span> <span class="n" style="color: #333;">ty'</span> <span class="n" style="color: #333;">tc</span></span>
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1952
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<pre style="margin: 0;">+<span id="LC1952" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">vanilla_result</span> <span class="p">}</span> <span class="p">;</span></span>
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1953
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<pre style="margin: 0;">+<span id="LC1953" class="line" lang="haskell"> <span class="kt" style="color: #458; font-weight: 600;">Just</span> <span class="p">(</span><span class="n" style="color: #333;">rep_tc</span><span class="p">,</span> <span class="n" style="color: #333;">rep_args</span><span class="p">,</span> <span class="n" style="color: #333;">coi</span><span class="p">)</span> <span class="o" style="font-weight: 600;">-></span></span>
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1954
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<pre style="margin: 0;">+<span id="LC1954" class="line" lang="haskell"></span>
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1955
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<pre style="margin: 0;">+<span id="LC1955" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">do</span> <span class="p">{</span> <span class="c1" style="color: #998; font-style: italic;">-- coi :: tc tc_args ~R rep_tc rep_args</span></span>
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1956
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<pre style="margin: 0;">+<span id="LC1956" class="line" lang="haskell"> <span class="n" style="color: #333;">check_enumeration</span> <span class="n" style="color: #333;">ty'</span> <span class="n" style="color: #333;">rep_tc</span></span>
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1957
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<pre style="margin: 0;">+<span id="LC1957" class="line" lang="haskell"> <span class="p">;</span> <span class="kr" style="font-weight: 600;">let</span> <span class="n" style="color: #333;">val_arg</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">dropWhile</span> <span class="p">(</span><span class="n" style="color: #333;">not</span> <span class="o" style="font-weight: 600;">.</span> <span class="n" style="color: #333;">isHsValArg</span><span class="p">)</span> <span class="n" style="color: #333;">args</span></span>
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1958
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<pre style="margin: 0;">+<span id="LC1958" class="line" lang="haskell"> <span class="n" style="color: #333;">rep_ty</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">mkTyConApp</span> <span class="n" style="color: #333;">rep_tc</span> <span class="n" style="color: #333;">rep_args</span></span>
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1959
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<pre style="margin: 0;">+<span id="LC1959" class="line" lang="haskell"> <span class="n" style="color: #333;">fun'</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">mkLHsWrap</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">WpTyApp</span> <span class="n" style="color: #333;">rep_ty</span><span class="p">)</span> <span class="n" style="color: #333;">fun</span></span>
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1960
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<pre style="margin: 0;">+<span id="LC1960" class="line" lang="haskell"> <span class="n" style="color: #333;">expr'</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">wrapHsArgs</span> <span class="n" style="color: #333;">fun'</span> <span class="n" style="color: #333;">val_arg</span></span>
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1961
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<pre style="margin: 0;">+<span id="LC1961" class="line" lang="haskell"> <span class="n" style="color: #333;">df_wrap</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">mkWpCastR</span> <span class="p">(</span><span class="n" style="color: #333;">mkTcSymCo</span> <span class="n" style="color: #333;">coi</span><span class="p">)</span></span>
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1962
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<pre style="margin: 0;">+<span id="LC1962" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">return</span> <span class="p">(</span><span class="n" style="color: #333;">mkHsWrap</span> <span class="n" style="color: #333;">df_wrap</span> <span class="p">(</span><span class="n" style="color: #333;">unLoc</span> <span class="n" style="color: #333;">expr'</span><span class="p">))</span> <span class="p">}}}}}</span></span>
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1963
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<pre style="margin: 0;">+<span id="LC1963" class="line" lang="haskell"></span>
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1942
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1964
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<pre style="margin: 0;"> <span id="LC1964" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">where</span></span>
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1965
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<pre style="margin: 0;">+<span id="LC1965" class="line" lang="haskell"> <span class="n" style="color: #333;">vanilla_result</span></span>
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1966
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<pre style="margin: 0;">+<span id="LC1966" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">do</span> <span class="p">{</span> <span class="kr" style="font-weight: 600;">let</span> <span class="n" style="color: #333;">expr'</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">wrapHsArgs</span> <span class="n" style="color: #333;">fun</span> <span class="n" style="color: #333;">args</span></span>
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1967
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<pre style="margin: 0;">+<span id="LC1967" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">tcWrapResult</span> <span class="n" style="color: #333;">expr</span> <span class="p">(</span><span class="n" style="color: #333;">unLoc</span> <span class="n" style="color: #333;">expr'</span><span class="p">)</span> <span class="n" style="color: #333;">app_res_ty</span> <span class="n" style="color: #333;">res_ty</span> <span class="p">}</span></span>
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1968
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<pre style="margin: 0;">+<span id="LC1968" class="line" lang="haskell"></span>
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1969
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<pre style="margin: 0;">+<span id="LC1969" class="line" lang="haskell"> <span class="n" style="color: #333;">check_enumeration</span> <span class="n" style="color: #333;">ty'</span> <span class="n" style="color: #333;">tc</span></span>
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1970
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<pre style="margin: 0;">+<span id="LC1970" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">|</span> <span class="n" style="color: #333;">isEnumerationTyCon</span> <span class="n" style="color: #333;">tc</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">return</span> <span class="nb" style="color: #0086b3;">()</span></span>
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1971
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<pre style="margin: 0;">+<span id="LC1971" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">|</span> <span class="n" style="color: #333;">otherwise</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">addErrTc</span> <span class="p">(</span><span class="n" style="color: #333;">mk_error</span> <span class="n" style="color: #333;">ty'</span> <span class="n" style="color: #333;">doc2</span><span class="p">)</span></span>
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1972
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<pre style="margin: 0;">+<span id="LC1972" class="line" lang="haskell"></span>
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1943
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1973
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<pre style="margin: 0;"> <span id="LC1973" class="line" lang="haskell"> <span class="n" style="color: #333;">doc1</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">vcat</span> <span class="p">[</span> <span class="n" style="color: #333;">text</span> <span class="s" style="color: #d14;">"Specify the type by giving a type signature"</span></span>
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1944
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1974
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<pre style="margin: 0;"> <span id="LC1974" class="line" lang="haskell"> <span class="p">,</span> <span class="n" style="color: #333;">text</span> <span class="s" style="color: #d14;">"e.g. (tagToEnum# x) :: Bool"</span> <span class="p">]</span></span>
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1945
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1975
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<pre style="margin: 0;"> <span id="LC1975" class="line" lang="haskell"> <span class="n" style="color: #333;">doc2</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">text</span> <span class="s" style="color: #d14;">"Result type must be an enumeration type"</span></span>
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<td class="diff-line-num unfold js-unfold old_line" data-linenumber="1950" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>
<td class="diff-line-num unfold js-unfold new_line" data-linenumber="1980" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>
<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -1950,18 +1980,6 @@ tcTagToEnum loc fun_name args res_ty</td>
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1950
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1980
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<pre style="margin: 0;"> <span id="LC1980" class="line" lang="haskell"> <span class="o" style="font-weight: 600;"><+></span> <span class="n" style="color: #333;">text</span> <span class="s" style="color: #d14;">"at type"</span> <span class="o" style="font-weight: 600;"><+></span> <span class="n" style="color: #333;">ppr</span> <span class="n" style="color: #333;">ty</span><span class="p">)</span></span>
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1951
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<td class="diff-line-num new_line" data-linenumber="1981" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">
1981
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<pre style="margin: 0;"> <span id="LC1981" class="line" lang="haskell"> <span class="mi" style="color: #099;">2</span> <span class="n" style="color: #333;">what</span></span>
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1952
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<td class="diff-line-num new_line" data-linenumber="1982" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">
1982
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<pre style="margin: 0;"> <span id="LC1982" class="line" lang="haskell"></span>
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1953
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<td class="diff-line-num new_line old" data-linenumber="1983" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">
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<pre style="margin: 0;">-<span id="LC1953" class="line" lang="haskell"><span class="n" style="color: #333;">too_many_args</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">String</span> <span class="o" style="font-weight: 600;">-></span> <span class="p">[</span><span class="kt" style="color: #458; font-weight: 600;">LHsExprArgIn</span><span class="p">]</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TcM</span> <span class="n" style="color: #333;">a</span></span>
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1954
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<pre style="margin: 0;">-<span id="LC1954" class="line" lang="haskell"><span class="n" style="color: #333;">too_many_args</span> <span class="n" style="color: #333;">fun</span> <span class="n" style="color: #333;">args</span></span>
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<td class="diff-line-num old old_line" data-linenumber="1955" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">
1955
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<td class="diff-line-num new_line old" data-linenumber="1983" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">
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<pre style="margin: 0;">-<span id="LC1955" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">failWith</span> <span class="o" style="font-weight: 600;">$</span></span>
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1956
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<pre style="margin: 0;">-<span id="LC1956" class="line" lang="haskell"> <span class="n" style="color: #333;">hang</span> <span class="p">(</span><span class="n" style="color: #333;">text</span> <span class="s" style="color: #d14;">"Too many type arguments to"</span> <span class="o" style="font-weight: 600;"><+></span> <span class="n" style="color: #333;">text</span> <span class="n" style="color: #333;">fun</span> <span class="o" style="font-weight: 600;"><></span> <span class="n" style="color: #333;">colon</span><span class="p">)</span></span>
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1957
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<td class="diff-line-num new_line old" data-linenumber="1983" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">
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<pre style="margin: 0;">-<span id="LC1957" class="line" lang="haskell"> <span class="mi" style="color: #099;">2</span> <span class="p">(</span><span class="n" style="color: #333;">sep</span> <span class="p">(</span><span class="n" style="color: #333;">map</span> <span class="n" style="color: #333;">pp</span> <span class="n" style="color: #333;">args</span><span class="p">))</span></span>
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1958
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<pre style="margin: 0;">-<span id="LC1958" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">where</span></span>
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1959
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<td class="diff-line-num new_line old" data-linenumber="1983" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">
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<pre style="margin: 0;">-<span id="LC1959" class="line" lang="haskell"> <span class="n" style="color: #333;">pp</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">HsValArg</span> <span class="n" style="color: #333;">e</span><span class="p">)</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">ppr</span> <span class="n" style="color: #333;">e</span></span>
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<td class="diff-line-num old old_line" data-linenumber="1960" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">
1960
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<pre style="margin: 0;">-<span id="LC1960" class="line" lang="haskell"> <span class="n" style="color: #333;">pp</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">HsTypeArg</span> <span class="kr" style="font-weight: 600;">_</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">HsWC</span> <span class="p">{</span> <span class="n" style="color: #333;">hswc_body</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">L</span> <span class="kr" style="font-weight: 600;">_</span> <span class="n" style="color: #333;">t</span> <span class="p">}))</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">pprHsType</span> <span class="n" style="color: #333;">t</span></span>
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<td class="diff-line-num old old_line" data-linenumber="1961" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">
1961
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<td class="diff-line-num new_line old" data-linenumber="1983" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">
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<pre style="margin: 0;">-<span id="LC1961" class="line" lang="haskell"> <span class="n" style="color: #333;">pp</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">HsTypeArg</span> <span class="kr" style="font-weight: 600;">_</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">XHsWildCardBndrs</span> <span class="n" style="color: #333;">nec</span><span class="p">))</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">noExtCon</span> <span class="n" style="color: #333;">nec</span></span>
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1962
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<pre style="margin: 0;">-<span id="LC1962" class="line" lang="haskell"> <span class="n" style="color: #333;">pp</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">HsArgPar</span> <span class="kr" style="font-weight: 600;">_</span><span class="p">)</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">empty</span></span>
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1963
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<pre style="margin: 0;">-<span id="LC1963" class="line" lang="haskell"></span>
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1964
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<pre style="margin: 0;">-<span id="LC1964" class="line" lang="haskell"></span>
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1965
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1983
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<pre style="margin: 0;"> <span id="LC1983" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">{-</span></span>
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1966
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1984
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<pre style="margin: 0;"> <span id="LC1984" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">************************************************************************</span></span>
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1967
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1985
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<pre style="margin: 0;"> <span id="LC1985" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">* *</span></span>
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<td class="diff-line-num unfold js-unfold old_line" data-linenumber="2374" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>
<td class="diff-line-num unfold js-unfold new_line" data-linenumber="2392" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>
<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -2374,7 +2392,7 @@ tcRecordBinds</td>
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2374
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2392
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<pre style="margin: 0;"> <span id="LC2392" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">ConLike</span></span>
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2375
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2393
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<pre style="margin: 0;"> <span id="LC2393" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">-></span> <span class="p">[</span><span class="kt" style="color: #458; font-weight: 600;">TcType</span><span class="p">]</span> <span class="c1" style="color: #998; font-style: italic;">-- Expected type for each field</span></span>
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2376
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2394
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<pre style="margin: 0;"> <span id="LC2394" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">HsRecordBinds</span> <span class="kt" style="color: #458; font-weight: 600;">GhcRn</span></span>
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2377
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<pre style="margin: 0;">-<span id="LC2377" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TcM</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">HsRecordBinds</span> <span class="kt" style="color: #458; font-weight: 600;">GhcTc<span class="idiff left right">Id</span></span><span class="p">)</span></span>
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2395
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<pre style="margin: 0;">+<span id="LC2395" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TcM</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">HsRecordBinds</span> <span class="kt" style="color: #458; font-weight: 600;">GhcTc</span><span class="p">)</span></span>
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2378
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2396
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<pre style="margin: 0;"> <span id="LC2396" class="line" lang="haskell"></span>
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2379
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2397
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<pre style="margin: 0;"> <span id="LC2397" class="line" lang="haskell"><span class="n" style="color: #333;">tcRecordBinds</span> <span class="n" style="color: #333;">con_like</span> <span class="n" style="color: #333;">arg_tys</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">HsRecFields</span> <span class="n" style="color: #333;">rbinds</span> <span class="n" style="color: #333;">dd</span><span class="p">)</span></span>
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2380
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2398
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<pre style="margin: 0;"> <span id="LC2398" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">do</span> <span class="p">{</span> <span class="n" style="color: #333;">mb_binds</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">mapM</span> <span class="n" style="color: #333;">do_bind</span> <span class="n" style="color: #333;">rbinds</span></span>
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<td class="diff-line-num unfold js-unfold old_line" data-linenumber="2384" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>
<td class="diff-line-num unfold js-unfold new_line" data-linenumber="2402" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>
<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -2384,7 +2402,7 @@ tcRecordBinds con_like arg_tys (HsRecFields rbinds dd)</td>
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2384
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2402
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<pre style="margin: 0;"> <span id="LC2402" class="line" lang="haskell"> <span class="n" style="color: #333;">flds_w_tys</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">zipEqual</span> <span class="s" style="color: #d14;">"tcRecordBinds"</span> <span class="n" style="color: #333;">fields</span> <span class="n" style="color: #333;">arg_tys</span></span>
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2385
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2403
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<pre style="margin: 0;"> <span id="LC2403" class="line" lang="haskell"></span>
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2386
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2404
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<pre style="margin: 0;"> <span id="LC2404" class="line" lang="haskell"> <span class="n" style="color: #333;">do_bind</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">LHsRecField</span> <span class="kt" style="color: #458; font-weight: 600;">GhcRn</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">LHsExpr</span> <span class="kt" style="color: #458; font-weight: 600;">GhcRn</span><span class="p">)</span></span>
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2387
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<pre style="margin: 0;">-<span id="LC2387" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TcM</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Maybe</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">LHsRecField</span> <span class="kt" style="color: #458; font-weight: 600;">GhcTc<span class="idiff left">Id</span></span><span class="idiff"> </span><span class="p"><span class="idiff">(</span></span><span class="kt" style="color: #458; font-weight: 600;"><span class="idiff">LHsExpr</span></span><span class="idiff"> </span><span class="kt" style="color: #458; font-weight: 600;"><span class="idiff right">GhcTcId</span></span><span class="p">)))</span></span>
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2405
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<pre style="margin: 0;">+<span id="LC2405" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TcM</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Maybe</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">LHsRecField</span> <span class="kt" style="color: #458; font-weight: 600;">GhcTc</span><span class="idiff left"> </span><span class="p"><span class="idiff">(</span></span><span class="kt" style="color: #458; font-weight: 600;"><span class="idiff">LHsExpr</span></span><span class="idiff"> </span><span class="kt" style="color: #458; font-weight: 600;"><span class="idiff right">GhcTc</span></span><span class="p">)))</span></span>
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2388
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2406
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<pre style="margin: 0;"> <span id="LC2406" class="line" lang="haskell"> <span class="n" style="color: #333;">do_bind</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">L</span> <span class="n" style="color: #333;">l</span> <span class="n" style="color: #333;">fld</span><span class="o" style="font-weight: 600;">@</span><span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">HsRecField</span> <span class="p">{</span> <span class="n" style="color: #333;">hsRecFieldLbl</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">f</span></span>
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2389
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2407
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<pre style="margin: 0;"> <span id="LC2407" class="line" lang="haskell"> <span class="p">,</span> <span class="n" style="color: #333;">hsRecFieldArg</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">rhs</span> <span class="p">}))</span></span>
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2390
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2408
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<pre style="margin: 0;"> <span id="LC2408" class="line" lang="haskell"></span>
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<td class="diff-line-num unfold js-unfold old_line" data-linenumber="2398" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>
<td class="diff-line-num unfold js-unfold new_line" data-linenumber="2416" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>
<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -2398,7 +2416,7 @@ tcRecordUpd</td>
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2398
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2416
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<pre style="margin: 0;"> <span id="LC2416" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">ConLike</span></span>
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2399
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2417
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<pre style="margin: 0;"> <span id="LC2417" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">-></span> <span class="p">[</span><span class="kt" style="color: #458; font-weight: 600;">TcType</span><span class="p">]</span> <span class="c1" style="color: #998; font-style: italic;">-- Expected type for each field</span></span>
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2400
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2418
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<pre style="margin: 0;"> <span id="LC2418" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">-></span> <span class="p">[</span><span class="kt" style="color: #458; font-weight: 600;">LHsRecField'</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">AmbiguousFieldOcc</span> <span class="kt" style="color: #458; font-weight: 600;">GhcTc</span><span class="p">)</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">LHsExpr</span> <span class="kt" style="color: #458; font-weight: 600;">GhcRn</span><span class="p">)]</span></span>
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2401
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<pre style="margin: 0;">-<span id="LC2401" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TcM</span> <span class="p">[</span><span class="kt" style="color: #458; font-weight: 600;">LHsRecUpdField</span> <span class="kt" style="color: #458; font-weight: 600;">GhcTc<span class="idiff left right">Id</span></span><span class="p">]</span></span>
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2419
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<pre style="margin: 0;">+<span id="LC2419" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TcM</span> <span class="p">[</span><span class="kt" style="color: #458; font-weight: 600;">LHsRecUpdField</span> <span class="kt" style="color: #458; font-weight: 600;">GhcTc</span><span class="p">]</span></span>
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2402
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2420
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<pre style="margin: 0;"> <span id="LC2420" class="line" lang="haskell"></span>
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2403
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2421
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<pre style="margin: 0;"> <span id="LC2421" class="line" lang="haskell"><span class="n" style="color: #333;">tcRecordUpd</span> <span class="n" style="color: #333;">con_like</span> <span class="n" style="color: #333;">arg_tys</span> <span class="n" style="color: #333;">rbinds</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">fmap</span> <span class="n" style="color: #333;">catMaybes</span> <span class="o" style="font-weight: 600;">$</span> <span class="n" style="color: #333;">mapM</span> <span class="n" style="color: #333;">do_bind</span> <span class="n" style="color: #333;">rbinds</span></span>
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2404
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2422
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<pre style="margin: 0;"> <span id="LC2422" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">where</span></span>
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<td class="diff-line-num unfold js-unfold new_line" data-linenumber="2424" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>
<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -2406,7 +2424,7 @@ tcRecordUpd con_like arg_tys rbinds = fmap catMaybes $ mapM do_bind rbinds</td>
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2406
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2424
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<pre style="margin: 0;"> <span id="LC2424" class="line" lang="haskell"> <span class="n" style="color: #333;">flds_w_tys</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">zipEqual</span> <span class="s" style="color: #d14;">"tcRecordUpd"</span> <span class="n" style="color: #333;">fields</span> <span class="n" style="color: #333;">arg_tys</span></span>
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2407
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2425
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<pre style="margin: 0;"> <span id="LC2425" class="line" lang="haskell"></span>
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2408
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2426
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<pre style="margin: 0;"> <span id="LC2426" class="line" lang="haskell"> <span class="n" style="color: #333;">do_bind</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">LHsRecField'</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">AmbiguousFieldOcc</span> <span class="kt" style="color: #458; font-weight: 600;">GhcTc</span><span class="p">)</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">LHsExpr</span> <span class="kt" style="color: #458; font-weight: 600;">GhcRn</span><span class="p">)</span></span>
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2409
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<pre style="margin: 0;">-<span id="LC2409" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TcM</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Maybe</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">LHsRecUpdField</span> <span class="kt" style="color: #458; font-weight: 600;">GhcTc<span class="idiff left right">Id</span></span><span class="p">))</span></span>
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2427
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<pre style="margin: 0;">+<span id="LC2427" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TcM</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Maybe</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">LHsRecUpdField</span> <span class="kt" style="color: #458; font-weight: 600;">GhcTc</span><span class="p">))</span></span>
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2410
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2428
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<pre style="margin: 0;"> <span id="LC2428" class="line" lang="haskell"> <span class="n" style="color: #333;">do_bind</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">L</span> <span class="n" style="color: #333;">l</span> <span class="n" style="color: #333;">fld</span><span class="o" style="font-weight: 600;">@</span><span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">HsRecField</span> <span class="p">{</span> <span class="n" style="color: #333;">hsRecFieldLbl</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">L</span> <span class="n" style="color: #333;">loc</span> <span class="n" style="color: #333;">af</span></span>
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2411
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2429
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<pre style="margin: 0;"> <span id="LC2429" class="line" lang="haskell"> <span class="p">,</span> <span class="n" style="color: #333;">hsRecFieldArg</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">rhs</span> <span class="p">}))</span></span>
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2430
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<pre style="margin: 0;"> <span id="LC2430" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">do</span> <span class="p">{</span> <span class="kr" style="font-weight: 600;">let</span> <span class="n" style="color: #333;">lbl</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">rdrNameAmbiguousFieldOcc</span> <span class="n" style="color: #333;">af</span></span>
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<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -2501,19 +2519,12 @@ checkMissingFields con_like rbinds</td>
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2501
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2519
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<pre style="margin: 0;"> <span id="LC2519" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">Boring and alphabetical:</span></span>
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2502
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2520
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<pre style="margin: 0;"> <span id="LC2520" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">-}</span></span>
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2503
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2521
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<pre style="margin: 0;"> <span id="LC2521" class="line" lang="haskell"></span>
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2504
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<pre style="margin: 0;">-<span id="LC2504" class="line" lang="haskell"><span class="n" style="color: #333;">addExprErrCtxt</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">LHsExpr</span> <span class="kt" style="color: #458; font-weight: 600;">GhcRn</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TcM</span> <span class="n" style="color: #333;">a</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TcM</span> <span class="n" style="color: #333;">a</span></span>
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2505
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<pre style="margin: 0;">-<span id="LC2505" class="line" lang="haskell"><span class="n" style="color: #333;">addExprErrCtxt</span> <span class="n" style="color: #333;">expr</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">addErrCtxt</span> <span class="p">(</span><span class="n" style="color: #333;">exprCtxt</span> <span class="n" style="color: #333;">expr</span><span class="p">)</span></span>
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2506
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<pre style="margin: 0;">-<span id="LC2506" class="line" lang="haskell"></span>
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<pre style="margin: 0;">-<span id="LC2507" class="line" lang="haskell"><span class="n" style="color: #333;">exprCtxt</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">LHsExpr</span> <span class="kt" style="color: #458; font-weight: 600;">GhcRn</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">SDoc</span></span>
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2508
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<pre style="margin: 0;">-<span id="LC2508" class="line" lang="haskell"><span class="n" style="color: #333;">exprCtxt</span> <span class="n" style="color: #333;">expr</span></span>
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2509
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<pre style="margin: 0;">-<span id="LC2509" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">hang</span> <span class="p">(</span><span class="n" style="color: #333;">text</span> <span class="s" style="color: #d14;">"In the expression:"</span><span class="p">)</span> <span class="mi" style="color: #099;">2</span> <span class="p">(</span><span class="n" style="color: #333;">ppr</span> <span class="p">(</span><span class="n" style="color: #333;">stripParensHsExpr</span> <span class="n" style="color: #333;">expr</span><span class="p">))</span></span>
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2510
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<pre style="margin: 0;">-<span id="LC2510" class="line" lang="haskell"></span>
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2511
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2522
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<pre style="margin: 0;"> <span id="LC2522" class="line" lang="haskell"><span class="n" style="color: #333;">fieldCtxt</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">FieldLabelString</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">SDoc</span></span>
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2512
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2523
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<pre style="margin: 0;"> <span id="LC2523" class="line" lang="haskell"><span class="n" style="color: #333;">fieldCtxt</span> <span class="n" style="color: #333;">field_name</span></span>
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2513
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2524
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<pre style="margin: 0;"> <span id="LC2524" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">text</span> <span class="s" style="color: #d14;">"In the"</span> <span class="o" style="font-weight: 600;"><+></span> <span class="n" style="color: #333;">quotes</span> <span class="p">(</span><span class="n" style="color: #333;">ppr</span> <span class="n" style="color: #333;">field_name</span><span class="p">)</span> <span class="o" style="font-weight: 600;"><+></span> <span class="n" style="color: #333;">ptext</span> <span class="p">(</span><span class="n" style="color: #333;">sLit</span> <span class="s" style="color: #d14;">"field of a record"</span><span class="p">)</span></span>
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2514
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2525
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<pre style="margin: 0;"> <span id="LC2525" class="line" lang="haskell"></span>
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2515
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2526
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<pre style="margin: 0;"> <span id="LC2526" class="line" lang="haskell"><span class="n" style="color: #333;">addFunResCtxt</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">Bool</span> <span class="c1" style="color: #998; font-style: italic;">-- There is at least one argument</span></span>
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<pre style="margin: 0;">-<span id="LC2516" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">HsExpr</span> <span class="kt" style="color: #458; font-weight: 600;">Ghc<span class="idiff left right">Rn</span></span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TcType</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">ExpRhoType</span></span>
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<pre style="margin: 0;">+<span id="LC2527" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">HsExpr</span> <span class="kt" style="color: #458; font-weight: 600;">Ghc<span class="idiff left right">Tc</span></span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TcType</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">ExpRhoType</span></span>
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<pre style="margin: 0;"> <span id="LC2528" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TcM</span> <span class="n" style="color: #333;">a</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TcM</span> <span class="n" style="color: #333;">a</span></span>
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<pre style="margin: 0;"> <span id="LC2529" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- When we have a mis-match in the return type of a function</span></span>
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<pre style="margin: 0;"> <span id="LC2530" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- try to give a helpful message about too many/few arguments</span></span>
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<a href="https://gitlab.haskell.org/ghc/ghc/-/commit/f39a0d86de843c105dc9cd4e0bd631176300d7f7#8dec347fbe40358b852d7b50ace1e4d62b9b6660"><strong>compiler/GHC/Tc/Gen/Expr.hs-boot</strong></a>
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<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -8,14 +8,13 @@ import GHC.Hs.Extension ( GhcRn, GhcTcId )</td>
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<pre style="margin: 0;"> <span id="LC8" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC9" class="line" lang="haskell"><span class="n" style="color: #333;">tcPolyExpr</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">LHsExpr</span> <span class="kt" style="color: #458; font-weight: 600;">GhcRn</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TcSigmaType</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TcM</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">LHsExpr</span> <span class="kt" style="color: #458; font-weight: 600;">GhcTcId</span><span class="p">)</span></span>
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<pre style="margin: 0;"> <span id="LC10" class="line" lang="haskell"></span>
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<pre style="margin: 0;">-<span id="LC11" class="line" lang="haskell"><span class="n" style="color: #333;">tcMonoExpr</span><span class="p">,</span> <span class="n" style="color: #333;">tcMonoExprNC</span></span>
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<pre style="margin: 0;">-<span id="LC12" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">LHsExpr</span> <span class="kt" style="color: #458; font-weight: 600;">GhcRn</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">ExpRhoType</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TcM</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">LHsExpr</span> <span class="kt" style="color: #458; font-weight: 600;">GhcTcId</span><span class="p">)</span></span>
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<pre style="margin: 0;">+<span id="LC11" class="line" lang="haskell"><span class="n" style="color: #333;">tcLExpr</span><span class="p">,</span> <span class="n" style="color: #333;">tcLExprNC</span></span>
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<pre style="margin: 0;">+<span id="LC12" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">LHsExpr</span> <span class="kt" style="color: #458; font-weight: 600;">GhcRn</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">ExpRhoType</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TcM</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">LHsExpr</span> <span class="kt" style="color: #458; font-weight: 600;">GhcTcId</span><span class="p">)</span></span>
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<pre style="margin: 0;">+<span id="LC13" class="line" lang="haskell"><span class="n" style="color: #333;">tcExpr</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">HsExpr</span> <span class="kt" style="color: #458; font-weight: 600;">GhcRn</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">ExpRhoType</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TcM</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">HsExpr</span> <span class="kt" style="color: #458; font-weight: 600;">GhcTcId</span><span class="p">)</span></span>
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<pre style="margin: 0;"> <span id="LC14" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC15" class="line" lang="haskell"><span class="n" style="color: #333;">tcInferRho</span><span class="p">,</span> <span class="n" style="color: #333;">tcInferRhoNC</span></span>
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<pre style="margin: 0;"> <span id="LC16" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">LHsExpr</span> <span class="kt" style="color: #458; font-weight: 600;">GhcRn</span><span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TcM</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">LHsExpr</span> <span class="kt" style="color: #458; font-weight: 600;">GhcTcId</span><span class="p">,</span> <span class="kt" style="color: #458; font-weight: 600;">TcRhoType</span><span class="p">)</span></span>
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<pre style="margin: 0;"> <span id="LC17" class="line" lang="haskell"></span>
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<pre style="margin: 0;">-<span id="LC17" class="line" lang="haskell"><span class="n" style="color: #333;">tcInferAppHead</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">LHsExpr</span> <span class="kt" style="color: #458; font-weight: 600;">GhcRn</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TcM</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">LHsExpr</span> <span class="kt" style="color: #458; font-weight: 600;">GhcTcId</span><span class="p">,</span> <span class="kt" style="color: #458; font-weight: 600;">TcSigmaType</span><span class="p">)</span></span>
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<pre style="margin: 0;">-<span id="LC18" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC18" class="line" lang="haskell"><span class="n" style="color: #333;">tcSyntaxOp</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">CtOrigin</span></span>
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<pre style="margin: 0;"> <span id="LC19" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">SyntaxExprRn</span></span>
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<pre style="margin: 0;"> <span id="LC20" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">-></span> <span class="p">[</span><span class="kt" style="color: #458; font-weight: 600;">SyntaxOpType</span><span class="p">]</span> <span class="c1" style="color: #998; font-style: italic;">-- ^ shape of syntax operator arguments</span></span>
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<a href="https://gitlab.haskell.org/ghc/ghc/-/commit/f39a0d86de843c105dc9cd4e0bd631176300d7f7#3377164bfe9a1f1a8cfd588703ae1e0ea1e91cf9"><strong>compiler/GHC/Tc/Gen/Match.hs</strong></a>
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<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -37,7 +37,8 @@ where</td>
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<pre style="margin: 0;"> <span id="LC37" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GhcPrelude</span></span>
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<pre style="margin: 0;"> <span id="LC38" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC39" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="err" style="color: #a61717; background-color: #e3d2d2;">{-#</span> <span class="nn" style="color: #555;">SOURCE</span> <span class="o" style="font-weight: 600;">#-</span><span class="p">}</span> <span class="kt" style="color: #458; font-weight: 600;">GHC</span><span class="o" style="font-weight: 600;">.</span><span class="kt" style="color: #458; font-weight: 600;">Tc</span><span class="o" style="font-weight: 600;">.</span><span class="kt" style="color: #458; font-weight: 600;">Gen</span><span class="o" style="font-weight: 600;">.</span><span class="kt" style="color: #458; font-weight: 600;">Expr</span><span class="p">(</span> <span class="n" style="color: #333;">tcSyntaxOp</span><span class="p">,</span> <span class="n" style="color: #333;">tcInferRhoNC</span><span class="p">,</span> <span class="n" style="color: #333;">tcInferRho</span></span>
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<pre style="margin: 0;">-<span id="LC40" class="line" lang="haskell"> <span class="p">,</span> <span class="n" style="color: #333;">tcCheckId</span><span class="p">,</span> <span class="n" style="color: #333;">tcMonoExpr</span><span class="p">,</span> <span class="n" style="color: #333;">tcMonoExprNC</span><span class="p">,</span> <span class="n" style="color: #333;">tcPolyExpr</span> <span class="p">)</span></span>
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<pre style="margin: 0;">+<span id="LC40" class="line" lang="haskell"> <span class="p">,</span> <span class="n" style="color: #333;">tcCheckId</span><span class="p">,</span> <span class="n" style="color: #333;">tcLExpr</span><span class="p">,</span> <span class="n" style="color: #333;">tcLExprNC</span><span class="p">,</span> <span class="n" style="color: #333;">tcExpr</span></span>
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<pre style="margin: 0;">+<span id="LC41" class="line" lang="haskell"> <span class="p">,</span> <span class="n" style="color: #333;">tcPolyExpr</span> <span class="p">)</span></span>
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<pre style="margin: 0;"> <span id="LC42" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC43" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Types.Basic</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">LexicalFixity</span><span class="p">(</span><span class="o" style="font-weight: 600;">..</span><span class="p">))</span></span>
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<pre style="margin: 0;"> <span id="LC44" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Hs</span></span>
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<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -335,7 +336,7 @@ tcDoStmts ctxt _ _ = pprPanic "tcDoStmts" (pprStmtContext ctxt)</td>
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<pre style="margin: 0;"> <span id="LC336" class="line" lang="haskell"><span class="n" style="color: #333;">tcBody</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">LHsExpr</span> <span class="kt" style="color: #458; font-weight: 600;">GhcRn</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">ExpRhoType</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TcM</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">LHsExpr</span> <span class="kt" style="color: #458; font-weight: 600;">GhcTcId</span><span class="p">)</span></span>
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<pre style="margin: 0;"> <span id="LC337" class="line" lang="haskell"><span class="n" style="color: #333;">tcBody</span> <span class="n" style="color: #333;">body</span> <span class="n" style="color: #333;">res_ty</span></span>
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<pre style="margin: 0;"> <span id="LC338" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">do</span> <span class="p">{</span> <span class="n" style="color: #333;">traceTc</span> <span class="s" style="color: #d14;">"tcBody"</span> <span class="p">(</span><span class="n" style="color: #333;">ppr</span> <span class="n" style="color: #333;">res_ty</span><span class="p">)</span></span>
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<pre style="margin: 0;">-<span id="LC338" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">tc<span class="idiff left right">Mono</span>Expr</span> <span class="n" style="color: #333;">body</span> <span class="n" style="color: #333;">res_ty</span></span>
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<pre style="margin: 0;">+<span id="LC339" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">tc<span class="idiff left right">L</span>Expr</span> <span class="n" style="color: #333;">body</span> <span class="n" style="color: #333;">res_ty</span></span>
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<pre style="margin: 0;"> <span id="LC340" class="line" lang="haskell"> <span class="p">}</span></span>
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<pre style="margin: 0;"> <span id="LC341" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC342" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">{-</span></span>
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<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -415,7 +416,7 @@ tcStmtsAndThen ctxt stmt_chk (L loc stmt : stmts) res_ty thing_inside</td>
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<pre style="margin: 0;"> <span id="LC416" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC417" class="line" lang="haskell"><span class="n" style="color: #333;">tcGuardStmt</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">TcExprStmtChecker</span></span>
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<pre style="margin: 0;"> <span id="LC418" class="line" lang="haskell"><span class="n" style="color: #333;">tcGuardStmt</span> <span class="kr" style="font-weight: 600;">_</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">BodyStmt</span> <span class="kr" style="font-weight: 600;">_</span> <span class="n" style="color: #333;">guard</span> <span class="kr" style="font-weight: 600;">_</span> <span class="kr" style="font-weight: 600;">_</span><span class="p">)</span> <span class="n" style="color: #333;">res_ty</span> <span class="n" style="color: #333;">thing_inside</span></span>
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<pre style="margin: 0;">-<span id="LC418" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">do</span> <span class="p">{</span> <span class="n" style="color: #333;">guard'</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">tc<span class="idiff left right">Mono</span>Expr</span> <span class="n" style="color: #333;">guard</span> <span class="p">(</span><span class="n" style="color: #333;">mkCheckExpType</span> <span class="n" style="color: #333;">boolTy</span><span class="p">)</span></span>
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<pre style="margin: 0;">+<span id="LC419" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">do</span> <span class="p">{</span> <span class="n" style="color: #333;">guard'</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">tc<span class="idiff left right">L</span>Expr</span> <span class="n" style="color: #333;">guard</span> <span class="p">(</span><span class="n" style="color: #333;">mkCheckExpType</span> <span class="n" style="color: #333;">boolTy</span><span class="p">)</span></span>
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<pre style="margin: 0;"> <span id="LC420" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">thing</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">thing_inside</span> <span class="n" style="color: #333;">res_ty</span></span>
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<pre style="margin: 0;"> <span id="LC421" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">return</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">BodyStmt</span> <span class="n" style="color: #333;">boolTy</span> <span class="n" style="color: #333;">guard'</span> <span class="n" style="color: #333;">noSyntaxExpr</span> <span class="n" style="color: #333;">noSyntaxExpr</span><span class="p">,</span> <span class="n" style="color: #333;">thing</span><span class="p">)</span> <span class="p">}</span></span>
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<pre style="margin: 0;"> <span id="LC422" class="line" lang="haskell"></span>
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<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -448,21 +449,21 @@ tcLcStmt :: TyCon -- The list type constructor ([])</td>
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<pre style="margin: 0;"> <span id="LC449" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TcExprStmtChecker</span></span>
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<pre style="margin: 0;"> <span id="LC450" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC451" class="line" lang="haskell"><span class="n" style="color: #333;">tcLcStmt</span> <span class="kr" style="font-weight: 600;">_</span> <span class="kr" style="font-weight: 600;">_</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">LastStmt</span> <span class="n" style="color: #333;">x</span> <span class="n" style="color: #333;">body</span> <span class="n" style="color: #333;">noret</span> <span class="kr" style="font-weight: 600;">_</span><span class="p">)</span> <span class="n" style="color: #333;">elt_ty</span> <span class="n" style="color: #333;">thing_inside</span></span>
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<pre style="margin: 0;">-<span id="LC451" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">do</span> <span class="p">{</span> <span class="n" style="color: #333;">body'</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">tc<span class="idiff left right">Mono</span>ExprNC</span> <span class="n" style="color: #333;">body</span> <span class="n" style="color: #333;">elt_ty</span></span>
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<pre style="margin: 0;">+<span id="LC452" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">do</span> <span class="p">{</span> <span class="n" style="color: #333;">body'</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">tc<span class="idiff left right">L</span>ExprNC</span> <span class="n" style="color: #333;">body</span> <span class="n" style="color: #333;">elt_ty</span></span>
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<pre style="margin: 0;"> <span id="LC453" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">thing</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">thing_inside</span> <span class="p">(</span><span class="n" style="color: #333;">panic</span> <span class="s" style="color: #d14;">"tcLcStmt: thing_inside"</span><span class="p">)</span></span>
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<pre style="margin: 0;"> <span id="LC454" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">return</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">LastStmt</span> <span class="n" style="color: #333;">x</span> <span class="n" style="color: #333;">body'</span> <span class="n" style="color: #333;">noret</span> <span class="n" style="color: #333;">noSyntaxExpr</span><span class="p">,</span> <span class="n" style="color: #333;">thing</span><span class="p">)</span> <span class="p">}</span></span>
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<pre style="margin: 0;"> <span id="LC455" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC456" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- A generator, pat <- rhs</span></span>
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<pre style="margin: 0;"> <span id="LC457" class="line" lang="haskell"><span class="n" style="color: #333;">tcLcStmt</span> <span class="n" style="color: #333;">m_tc</span> <span class="n" style="color: #333;">ctxt</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">BindStmt</span> <span class="kr" style="font-weight: 600;">_</span> <span class="n" style="color: #333;">pat</span> <span class="n" style="color: #333;">rhs</span> <span class="kr" style="font-weight: 600;">_</span> <span class="kr" style="font-weight: 600;">_</span><span class="p">)</span> <span class="n" style="color: #333;">elt_ty</span> <span class="n" style="color: #333;">thing_inside</span></span>
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<pre style="margin: 0;"> <span id="LC458" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">do</span> <span class="p">{</span> <span class="n" style="color: #333;">pat_ty</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">newFlexiTyVarTy</span> <span class="n" style="color: #333;">liftedTypeKind</span></span>
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<pre style="margin: 0;">-<span id="LC458" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">rhs'</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">tc<span class="idiff left right">Mono</span>Expr</span> <span class="n" style="color: #333;">rhs</span> <span class="p">(</span><span class="n" style="color: #333;">mkCheckExpType</span> <span class="o" style="font-weight: 600;">$</span> <span class="n" style="color: #333;">mkTyConApp</span> <span class="n" style="color: #333;">m_tc</span> <span class="p">[</span><span class="n" style="color: #333;">pat_ty</span><span class="p">])</span></span>
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<pre style="margin: 0;">+<span id="LC459" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">rhs'</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">tc<span class="idiff left right">L</span>Expr</span> <span class="n" style="color: #333;">rhs</span> <span class="p">(</span><span class="n" style="color: #333;">mkCheckExpType</span> <span class="o" style="font-weight: 600;">$</span> <span class="n" style="color: #333;">mkTyConApp</span> <span class="n" style="color: #333;">m_tc</span> <span class="p">[</span><span class="n" style="color: #333;">pat_ty</span><span class="p">])</span></span>
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<pre style="margin: 0;"> <span id="LC460" class="line" lang="haskell"> <span class="p">;</span> <span class="p">(</span><span class="n" style="color: #333;">pat'</span><span class="p">,</span> <span class="n" style="color: #333;">thing</span><span class="p">)</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">tcCheckPat</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">StmtCtxt</span> <span class="n" style="color: #333;">ctxt</span><span class="p">)</span> <span class="n" style="color: #333;">pat</span> <span class="n" style="color: #333;">pat_ty</span> <span class="o" style="font-weight: 600;">$</span></span>
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<pre style="margin: 0;"> <span id="LC461" class="line" lang="haskell"> <span class="n" style="color: #333;">thing_inside</span> <span class="n" style="color: #333;">elt_ty</span></span>
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<pre style="margin: 0;"> <span id="LC462" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">return</span> <span class="p">(</span><span class="n" style="color: #333;">mkTcBindStmt</span> <span class="n" style="color: #333;">pat'</span> <span class="n" style="color: #333;">rhs'</span><span class="p">,</span> <span class="n" style="color: #333;">thing</span><span class="p">)</span> <span class="p">}</span></span>
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<pre style="margin: 0;"> <span id="LC463" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC464" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- A boolean guard</span></span>
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<pre style="margin: 0;"> <span id="LC465" class="line" lang="haskell"><span class="n" style="color: #333;">tcLcStmt</span> <span class="kr" style="font-weight: 600;">_</span> <span class="kr" style="font-weight: 600;">_</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">BodyStmt</span> <span class="kr" style="font-weight: 600;">_</span> <span class="n" style="color: #333;">rhs</span> <span class="kr" style="font-weight: 600;">_</span> <span class="kr" style="font-weight: 600;">_</span><span class="p">)</span> <span class="n" style="color: #333;">elt_ty</span> <span class="n" style="color: #333;">thing_inside</span></span>
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<pre style="margin: 0;">-<span id="LC465" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">do</span> <span class="p">{</span> <span class="n" style="color: #333;">rhs'</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">tc<span class="idiff left right">Mono</span>Expr</span> <span class="n" style="color: #333;">rhs</span> <span class="p">(</span><span class="n" style="color: #333;">mkCheckExpType</span> <span class="n" style="color: #333;">boolTy</span><span class="p">)</span></span>
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<pre style="margin: 0;">+<span id="LC466" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">do</span> <span class="p">{</span> <span class="n" style="color: #333;">rhs'</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">tc<span class="idiff left right">L</span>Expr</span> <span class="n" style="color: #333;">rhs</span> <span class="p">(</span><span class="n" style="color: #333;">mkCheckExpType</span> <span class="n" style="color: #333;">boolTy</span><span class="p">)</span></span>
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<pre style="margin: 0;"> <span id="LC467" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">thing</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">thing_inside</span> <span class="n" style="color: #333;">elt_ty</span></span>
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<pre style="margin: 0;"> <span id="LC468" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">return</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">BodyStmt</span> <span class="n" style="color: #333;">boolTy</span> <span class="n" style="color: #333;">rhs'</span> <span class="n" style="color: #333;">noSyntaxExpr</span> <span class="n" style="color: #333;">noSyntaxExpr</span><span class="p">,</span> <span class="n" style="color: #333;">thing</span><span class="p">)</span> <span class="p">}</span></span>
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<pre style="margin: 0;"> <span id="LC469" class="line" lang="haskell"></span>
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<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -563,7 +564,7 @@ tcMcStmt _ (LastStmt x body noret return_op) res_ty thing_inside</td>
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<pre style="margin: 0;"> <span id="LC564" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">do</span> <span class="p">{</span> <span class="p">(</span><span class="n" style="color: #333;">body'</span><span class="p">,</span> <span class="n" style="color: #333;">return_op'</span><span class="p">)</span></span>
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<pre style="margin: 0;"> <span id="LC565" class="line" lang="haskell"> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">tcSyntaxOp</span> <span class="kt" style="color: #458; font-weight: 600;">MCompOrigin</span> <span class="n" style="color: #333;">return_op</span> <span class="p">[</span><span class="kt" style="color: #458; font-weight: 600;">SynRho</span><span class="p">]</span> <span class="n" style="color: #333;">res_ty</span> <span class="o" style="font-weight: 600;">$</span></span>
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<pre style="margin: 0;"> <span id="LC566" class="line" lang="haskell"> <span class="nf" style="color: #900; font-weight: 600;">\</span> <span class="p">[</span><span class="n" style="color: #333;">a_ty</span><span class="p">]</span> <span class="o" style="font-weight: 600;">-></span></span>
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<pre style="margin: 0;">-<span id="LC566" class="line" lang="haskell"> <span class="n" style="color: #333;">tc<span class="idiff left right">Mono</span>ExprNC</span> <span class="n" style="color: #333;">body</span> <span class="p">(</span><span class="n" style="color: #333;">mkCheckExpType</span> <span class="n" style="color: #333;">a_ty</span><span class="p">)</span></span>
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<pre style="margin: 0;">+<span id="LC567" class="line" lang="haskell"> <span class="n" style="color: #333;">tc<span class="idiff left right">L</span>ExprNC</span> <span class="n" style="color: #333;">body</span> <span class="p">(</span><span class="n" style="color: #333;">mkCheckExpType</span> <span class="n" style="color: #333;">a_ty</span><span class="p">)</span></span>
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567
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568
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<pre style="margin: 0;"> <span id="LC568" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">thing</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">thing_inside</span> <span class="p">(</span><span class="n" style="color: #333;">panic</span> <span class="s" style="color: #d14;">"tcMcStmt: thing_inside"</span><span class="p">)</span></span>
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568
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569
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<pre style="margin: 0;"> <span id="LC569" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">return</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">LastStmt</span> <span class="n" style="color: #333;">x</span> <span class="n" style="color: #333;">body'</span> <span class="n" style="color: #333;">noret</span> <span class="n" style="color: #333;">return_op'</span><span class="p">,</span> <span class="n" style="color: #333;">thing</span><span class="p">)</span> <span class="p">}</span></span>
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569
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570
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<pre style="margin: 0;"> <span id="LC570" class="line" lang="haskell"></span>
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<td class="diff-line-num unfold js-unfold old_line" data-linenumber="579" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>
<td class="diff-line-num unfold js-unfold new_line" data-linenumber="580" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>
<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -579,7 +580,7 @@ tcMcStmt ctxt (BindStmt _ pat rhs bind_op fail_op) res_ty thing_inside</td>
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579
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580
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<pre style="margin: 0;"> <span id="LC580" class="line" lang="haskell"> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">tcSyntaxOp</span> <span class="kt" style="color: #458; font-weight: 600;">MCompOrigin</span> <span class="n" style="color: #333;">bind_op</span></span>
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580
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581
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<pre style="margin: 0;"> <span id="LC581" class="line" lang="haskell"> <span class="p">[</span><span class="kt" style="color: #458; font-weight: 600;">SynRho</span><span class="p">,</span> <span class="kt" style="color: #458; font-weight: 600;">SynFun</span> <span class="kt" style="color: #458; font-weight: 600;">SynAny</span> <span class="kt" style="color: #458; font-weight: 600;">SynRho</span><span class="p">]</span> <span class="n" style="color: #333;">res_ty</span> <span class="o" style="font-weight: 600;">$</span></span>
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581
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582
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<pre style="margin: 0;"> <span id="LC582" class="line" lang="haskell"> <span class="nf" style="color: #900; font-weight: 600;">\</span> <span class="p">[</span><span class="n" style="color: #333;">rhs_ty</span><span class="p">,</span> <span class="n" style="color: #333;">pat_ty</span><span class="p">,</span> <span class="n" style="color: #333;">new_res_ty</span><span class="p">]</span> <span class="o" style="font-weight: 600;">-></span></span>
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582
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<pre style="margin: 0;">-<span id="LC582" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">do</span> <span class="p">{</span> <span class="n" style="color: #333;">rhs'</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">tc<span class="idiff left right">Mono</span>ExprNC</span> <span class="n" style="color: #333;">rhs</span> <span class="p">(</span><span class="n" style="color: #333;">mkCheckExpType</span> <span class="n" style="color: #333;">rhs_ty</span><span class="p">)</span></span>
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583
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<pre style="margin: 0;">+<span id="LC583" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">do</span> <span class="p">{</span> <span class="n" style="color: #333;">rhs'</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">tc<span class="idiff left right">L</span>ExprNC</span> <span class="n" style="color: #333;">rhs</span> <span class="p">(</span><span class="n" style="color: #333;">mkCheckExpType</span> <span class="n" style="color: #333;">rhs_ty</span><span class="p">)</span></span>
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583
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584
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<pre style="margin: 0;"> <span id="LC584" class="line" lang="haskell"> <span class="p">;</span> <span class="p">(</span><span class="n" style="color: #333;">pat'</span><span class="p">,</span> <span class="n" style="color: #333;">thing</span><span class="p">)</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">tcCheckPat</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">StmtCtxt</span> <span class="n" style="color: #333;">ctxt</span><span class="p">)</span> <span class="n" style="color: #333;">pat</span> <span class="n" style="color: #333;">pat_ty</span> <span class="o" style="font-weight: 600;">$</span></span>
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584
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585
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<pre style="margin: 0;"> <span id="LC585" class="line" lang="haskell"> <span class="n" style="color: #333;">thing_inside</span> <span class="p">(</span><span class="n" style="color: #333;">mkCheckExpType</span> <span class="n" style="color: #333;">new_res_ty</span><span class="p">)</span></span>
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585
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586
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<pre style="margin: 0;"> <span id="LC586" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">return</span> <span class="p">(</span><span class="n" style="color: #333;">rhs'</span><span class="p">,</span> <span class="n" style="color: #333;">pat'</span><span class="p">,</span> <span class="n" style="color: #333;">thing</span><span class="p">,</span> <span class="n" style="color: #333;">new_res_ty</span><span class="p">)</span> <span class="p">}</span></span>
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<td class="diff-line-num unfold js-unfold old_line" data-linenumber="605" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>
<td class="diff-line-num unfold js-unfold new_line" data-linenumber="606" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>
<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -605,7 +606,7 @@ tcMcStmt _ (BodyStmt _ rhs then_op guard_op) res_ty thing_inside</td>
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605
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606
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<pre style="margin: 0;"> <span id="LC606" class="line" lang="haskell"> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">tcSyntaxOp</span> <span class="kt" style="color: #458; font-weight: 600;">MCompOrigin</span> <span class="n" style="color: #333;">guard_op</span> <span class="p">[</span><span class="kt" style="color: #458; font-weight: 600;">SynAny</span><span class="p">]</span></span>
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606
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607
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<pre style="margin: 0;"> <span id="LC607" class="line" lang="haskell"> <span class="p">(</span><span class="n" style="color: #333;">mkCheckExpType</span> <span class="n" style="color: #333;">rhs_ty</span><span class="p">)</span> <span class="o" style="font-weight: 600;">$</span></span>
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607
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608
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<pre style="margin: 0;"> <span id="LC608" class="line" lang="haskell"> <span class="nf" style="color: #900; font-weight: 600;">\</span> <span class="p">[</span><span class="n" style="color: #333;">test_ty</span><span class="p">]</span> <span class="o" style="font-weight: 600;">-></span></span>
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608
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<pre style="margin: 0;">-<span id="LC608" class="line" lang="haskell"> <span class="n" style="color: #333;">tc<span class="idiff left right">Mono</span>Expr</span> <span class="n" style="color: #333;">rhs</span> <span class="p">(</span><span class="n" style="color: #333;">mkCheckExpType</span> <span class="n" style="color: #333;">test_ty</span><span class="p">)</span></span>
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609
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<pre style="margin: 0;">+<span id="LC609" class="line" lang="haskell"> <span class="n" style="color: #333;">tc<span class="idiff left right">L</span>Expr</span> <span class="n" style="color: #333;">rhs</span> <span class="p">(</span><span class="n" style="color: #333;">mkCheckExpType</span> <span class="n" style="color: #333;">test_ty</span><span class="p">)</span></span>
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609
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610
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<pre style="margin: 0;"> <span id="LC610" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">thing</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">thing_inside</span> <span class="p">(</span><span class="n" style="color: #333;">mkCheckExpType</span> <span class="n" style="color: #333;">new_res_ty</span><span class="p">)</span></span>
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610
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<pre style="margin: 0;"> <span id="LC611" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">return</span> <span class="p">(</span><span class="n" style="color: #333;">thing</span><span class="p">,</span> <span class="n" style="color: #333;">rhs'</span><span class="p">,</span> <span class="n" style="color: #333;">rhs_ty</span><span class="p">,</span> <span class="n" style="color: #333;">guard_op'</span><span class="p">)</span> <span class="p">}</span></span>
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612
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<pre style="margin: 0;"> <span id="LC612" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">return</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">BodyStmt</span> <span class="n" style="color: #333;">rhs_ty</span> <span class="n" style="color: #333;">rhs'</span> <span class="n" style="color: #333;">then_op'</span> <span class="n" style="color: #333;">guard_op'</span><span class="p">,</span> <span class="n" style="color: #333;">thing</span><span class="p">)</span> <span class="p">}</span></span>
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<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -665,7 +666,7 @@ tcMcStmt ctxt (TransStmt { trS_stmts = stmts, trS_bndrs = bindersMap</td>
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665
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666
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<pre style="margin: 0;"> <span id="LC666" class="line" lang="haskell"> <span class="p">(</span><span class="n" style="color: #333;">mkCheckExpType</span> <span class="n" style="color: #333;">using_arg_ty</span><span class="p">)</span> <span class="o" style="font-weight: 600;">$</span> <span class="nf" style="color: #900; font-weight: 600;">\</span><span class="n" style="color: #333;">res_ty'</span> <span class="o" style="font-weight: 600;">-></span> <span class="kr" style="font-weight: 600;">do</span></span>
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667
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<pre style="margin: 0;"> <span id="LC667" class="line" lang="haskell"> <span class="p">{</span> <span class="n" style="color: #333;">by'</span> <span class="o" style="font-weight: 600;"><-</span> <span class="kr" style="font-weight: 600;">case</span> <span class="n" style="color: #333;">by</span> <span class="kr" style="font-weight: 600;">of</span></span>
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667
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668
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<pre style="margin: 0;"> <span id="LC668" class="line" lang="haskell"> <span class="kt" style="color: #458; font-weight: 600;">Nothing</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">return</span> <span class="kt" style="color: #458; font-weight: 600;">Nothing</span></span>
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668
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<pre style="margin: 0;">-<span id="LC668" class="line" lang="haskell"> <span class="kt" style="color: #458; font-weight: 600;">Just</span> <span class="n" style="color: #333;">e</span> <span class="o" style="font-weight: 600;">-></span> <span class="kr" style="font-weight: 600;">do</span> <span class="p">{</span> <span class="n" style="color: #333;">e'</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">tc<span class="idiff left right">Mono</span>Expr</span> <span class="n" style="color: #333;">e</span></span>
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<pre style="margin: 0;">+<span id="LC669" class="line" lang="haskell"> <span class="kt" style="color: #458; font-weight: 600;">Just</span> <span class="n" style="color: #333;">e</span> <span class="o" style="font-weight: 600;">-></span> <span class="kr" style="font-weight: 600;">do</span> <span class="p">{</span> <span class="n" style="color: #333;">e'</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">tc<span class="idiff left right">L</span>Expr</span> <span class="n" style="color: #333;">e</span></span>
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670
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<pre style="margin: 0;"> <span id="LC670" class="line" lang="haskell"> <span class="p">(</span><span class="n" style="color: #333;">mkCheckExpType</span> <span class="n" style="color: #333;">by_e_ty</span><span class="p">)</span></span>
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671
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<pre style="margin: 0;"> <span id="LC671" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">return</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Just</span> <span class="n" style="color: #333;">e'</span><span class="p">)</span> <span class="p">}</span></span>
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672
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<pre style="margin: 0;"> <span id="LC672" class="line" lang="haskell"></span>
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<td class="diff-line-num unfold js-unfold old_line" data-linenumber="825" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>
<td class="diff-line-num unfold js-unfold new_line" data-linenumber="826" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>
<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -825,7 +826,7 @@ tcMcStmt _ stmt _ _</td>
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<pre style="margin: 0;"> <span id="LC826" class="line" lang="haskell"><span class="n" style="color: #333;">tcDoStmt</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">TcExprStmtChecker</span></span>
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827
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<pre style="margin: 0;"> <span id="LC827" class="line" lang="haskell"></span>
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828
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<pre style="margin: 0;"> <span id="LC828" class="line" lang="haskell"><span class="n" style="color: #333;">tcDoStmt</span> <span class="kr" style="font-weight: 600;">_</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">LastStmt</span> <span class="n" style="color: #333;">x</span> <span class="n" style="color: #333;">body</span> <span class="n" style="color: #333;">noret</span> <span class="kr" style="font-weight: 600;">_</span><span class="p">)</span> <span class="n" style="color: #333;">res_ty</span> <span class="n" style="color: #333;">thing_inside</span></span>
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<pre style="margin: 0;">-<span id="LC828" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">do</span> <span class="p">{</span> <span class="n" style="color: #333;">body'</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">tc<span class="idiff left right">Mono</span>ExprNC</span> <span class="n" style="color: #333;">body</span> <span class="n" style="color: #333;">res_ty</span></span>
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<pre style="margin: 0;">+<span id="LC829" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">do</span> <span class="p">{</span> <span class="n" style="color: #333;">body'</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">tc<span class="idiff left right">L</span>ExprNC</span> <span class="n" style="color: #333;">body</span> <span class="n" style="color: #333;">res_ty</span></span>
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830
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<pre style="margin: 0;"> <span id="LC830" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">thing</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">thing_inside</span> <span class="p">(</span><span class="n" style="color: #333;">panic</span> <span class="s" style="color: #d14;">"tcDoStmt: thing_inside"</span><span class="p">)</span></span>
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831
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<pre style="margin: 0;"> <span id="LC831" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">return</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">LastStmt</span> <span class="n" style="color: #333;">x</span> <span class="n" style="color: #333;">body'</span> <span class="n" style="color: #333;">noret</span> <span class="n" style="color: #333;">noSyntaxExpr</span><span class="p">,</span> <span class="n" style="color: #333;">thing</span><span class="p">)</span> <span class="p">}</span></span>
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<pre style="margin: 0;"> <span id="LC832" class="line" lang="haskell"></span>
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<td class="diff-line-num unfold js-unfold new_line" data-linenumber="839" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>
<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -838,7 +839,7 @@ tcDoStmt ctxt (BindStmt _ pat rhs bind_op fail_op) res_ty thing_inside</td>
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838
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839
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<pre style="margin: 0;"> <span id="LC839" class="line" lang="haskell"> <span class="p">((</span><span class="n" style="color: #333;">rhs'</span><span class="p">,</span> <span class="n" style="color: #333;">pat'</span><span class="p">,</span> <span class="n" style="color: #333;">new_res_ty</span><span class="p">,</span> <span class="n" style="color: #333;">thing</span><span class="p">),</span> <span class="n" style="color: #333;">bind_op'</span><span class="p">)</span></span>
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839
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840
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<pre style="margin: 0;"> <span id="LC840" class="line" lang="haskell"> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">tcSyntaxOp</span> <span class="kt" style="color: #458; font-weight: 600;">DoOrigin</span> <span class="n" style="color: #333;">bind_op</span> <span class="p">[</span><span class="kt" style="color: #458; font-weight: 600;">SynRho</span><span class="p">,</span> <span class="kt" style="color: #458; font-weight: 600;">SynFun</span> <span class="kt" style="color: #458; font-weight: 600;">SynAny</span> <span class="kt" style="color: #458; font-weight: 600;">SynRho</span><span class="p">]</span> <span class="n" style="color: #333;">res_ty</span> <span class="o" style="font-weight: 600;">$</span></span>
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840
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841
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<pre style="margin: 0;"> <span id="LC841" class="line" lang="haskell"> <span class="nf" style="color: #900; font-weight: 600;">\</span> <span class="p">[</span><span class="n" style="color: #333;">rhs_ty</span><span class="p">,</span> <span class="n" style="color: #333;">pat_ty</span><span class="p">,</span> <span class="n" style="color: #333;">new_res_ty</span><span class="p">]</span> <span class="o" style="font-weight: 600;">-></span></span>
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841
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<pre style="margin: 0;">-<span id="LC841" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">do</span> <span class="p">{</span> <span class="n" style="color: #333;">rhs'</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">tc<span class="idiff left right">Mono</span>ExprNC</span> <span class="n" style="color: #333;">rhs</span> <span class="p">(</span><span class="n" style="color: #333;">mkCheckExpType</span> <span class="n" style="color: #333;">rhs_ty</span><span class="p">)</span></span>
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842
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<pre style="margin: 0;">+<span id="LC842" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">do</span> <span class="p">{</span> <span class="n" style="color: #333;">rhs'</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">tc<span class="idiff left right">L</span>ExprNC</span> <span class="n" style="color: #333;">rhs</span> <span class="p">(</span><span class="n" style="color: #333;">mkCheckExpType</span> <span class="n" style="color: #333;">rhs_ty</span><span class="p">)</span></span>
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842
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843
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<pre style="margin: 0;"> <span id="LC843" class="line" lang="haskell"> <span class="p">;</span> <span class="p">(</span><span class="n" style="color: #333;">pat'</span><span class="p">,</span> <span class="n" style="color: #333;">thing</span><span class="p">)</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">tcCheckPat</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">StmtCtxt</span> <span class="n" style="color: #333;">ctxt</span><span class="p">)</span> <span class="n" style="color: #333;">pat</span> <span class="n" style="color: #333;">pat_ty</span> <span class="o" style="font-weight: 600;">$</span></span>
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843
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844
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<pre style="margin: 0;"> <span id="LC844" class="line" lang="haskell"> <span class="n" style="color: #333;">thing_inside</span> <span class="p">(</span><span class="n" style="color: #333;">mkCheckExpType</span> <span class="n" style="color: #333;">new_res_ty</span><span class="p">)</span></span>
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844
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845
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<pre style="margin: 0;"> <span id="LC845" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">return</span> <span class="p">(</span><span class="n" style="color: #333;">rhs'</span><span class="p">,</span> <span class="n" style="color: #333;">pat'</span><span class="p">,</span> <span class="n" style="color: #333;">new_res_ty</span><span class="p">,</span> <span class="n" style="color: #333;">thing</span><span class="p">)</span> <span class="p">}</span></span>
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<td class="diff-line-num unfold js-unfold old_line" data-linenumber="866" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>
<td class="diff-line-num unfold js-unfold new_line" data-linenumber="867" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>
<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -866,7 +867,7 @@ tcDoStmt _ (BodyStmt _ rhs then_op _) res_ty thing_inside</td>
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866
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867
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<pre style="margin: 0;"> <span id="LC867" class="line" lang="haskell"> <span class="p">;</span> <span class="p">((</span><span class="n" style="color: #333;">rhs'</span><span class="p">,</span> <span class="n" style="color: #333;">rhs_ty</span><span class="p">,</span> <span class="n" style="color: #333;">thing</span><span class="p">),</span> <span class="n" style="color: #333;">then_op'</span><span class="p">)</span></span>
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867
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868
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<pre style="margin: 0;"> <span id="LC868" class="line" lang="haskell"> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">tcSyntaxOp</span> <span class="kt" style="color: #458; font-weight: 600;">DoOrigin</span> <span class="n" style="color: #333;">then_op</span> <span class="p">[</span><span class="kt" style="color: #458; font-weight: 600;">SynRho</span><span class="p">,</span> <span class="kt" style="color: #458; font-weight: 600;">SynRho</span><span class="p">]</span> <span class="n" style="color: #333;">res_ty</span> <span class="o" style="font-weight: 600;">$</span></span>
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868
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869
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<pre style="margin: 0;"> <span id="LC869" class="line" lang="haskell"> <span class="nf" style="color: #900; font-weight: 600;">\</span> <span class="p">[</span><span class="n" style="color: #333;">rhs_ty</span><span class="p">,</span> <span class="n" style="color: #333;">new_res_ty</span><span class="p">]</span> <span class="o" style="font-weight: 600;">-></span></span>
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869
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<pre style="margin: 0;">-<span id="LC869" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">do</span> <span class="p">{</span> <span class="n" style="color: #333;">rhs'</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">tc<span class="idiff left right">Mono</span>ExprNC</span> <span class="n" style="color: #333;">rhs</span> <span class="p">(</span><span class="n" style="color: #333;">mkCheckExpType</span> <span class="n" style="color: #333;">rhs_ty</span><span class="p">)</span></span>
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870
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<pre style="margin: 0;">+<span id="LC870" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">do</span> <span class="p">{</span> <span class="n" style="color: #333;">rhs'</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">tc<span class="idiff left right">L</span>ExprNC</span> <span class="n" style="color: #333;">rhs</span> <span class="p">(</span><span class="n" style="color: #333;">mkCheckExpType</span> <span class="n" style="color: #333;">rhs_ty</span><span class="p">)</span></span>
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870
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871
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<pre style="margin: 0;"> <span id="LC871" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">thing</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">thing_inside</span> <span class="p">(</span><span class="n" style="color: #333;">mkCheckExpType</span> <span class="n" style="color: #333;">new_res_ty</span><span class="p">)</span></span>
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871
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872
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<pre style="margin: 0;"> <span id="LC872" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">return</span> <span class="p">(</span><span class="n" style="color: #333;">rhs'</span><span class="p">,</span> <span class="n" style="color: #333;">rhs_ty</span><span class="p">,</span> <span class="n" style="color: #333;">thing</span><span class="p">)</span> <span class="p">}</span></span>
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873
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<pre style="margin: 0;"> <span id="LC873" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">return</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">BodyStmt</span> <span class="n" style="color: #333;">rhs_ty</span> <span class="n" style="color: #333;">rhs'</span> <span class="n" style="color: #333;">then_op'</span> <span class="n" style="color: #333;">noSyntaxExpr</span><span class="p">,</span> <span class="n" style="color: #333;">thing</span><span class="p">)</span> <span class="p">}</span></span>
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<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -882,7 +883,7 @@ tcDoStmt ctxt (RecStmt { recS_stmts = stmts, recS_later_ids = later_names</td>
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882
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<pre style="margin: 0;"> <span id="LC883" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC884" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">tcExtendIdEnv</span> <span class="n" style="color: #333;">tup_ids</span> <span class="o" style="font-weight: 600;">$</span> <span class="kr" style="font-weight: 600;">do</span></span>
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885
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<pre style="margin: 0;"> <span id="LC885" class="line" lang="haskell"> <span class="p">{</span> <span class="p">((</span><span class="n" style="color: #333;">stmts'</span><span class="p">,</span> <span class="p">(</span><span class="n" style="color: #333;">ret_op'</span><span class="p">,</span> <span class="n" style="color: #333;">tup_rets</span><span class="p">)),</span> <span class="n" style="color: #333;">stmts_ty</span><span class="p">)</span></span>
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<pre style="margin: 0;">-<span id="LC885" class="line" lang="haskell"> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">tcInfer<span class="idiff left right">Inst</span></span> <span class="o" style="font-weight: 600;">$</span> <span class="nf" style="color: #900; font-weight: 600;">\</span> <span class="n" style="color: #333;">exp_ty</span> <span class="o" style="font-weight: 600;">-></span></span>
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886
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<pre style="margin: 0;">+<span id="LC886" class="line" lang="haskell"> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">tcInfer</span> <span class="o" style="font-weight: 600;">$</span> <span class="nf" style="color: #900; font-weight: 600;">\</span> <span class="n" style="color: #333;">exp_ty</span> <span class="o" style="font-weight: 600;">-></span></span>
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886
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887
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<pre style="margin: 0;"> <span id="LC887" class="line" lang="haskell"> <span class="n" style="color: #333;">tcStmtsAndThen</span> <span class="n" style="color: #333;">ctxt</span> <span class="n" style="color: #333;">tcDoStmt</span> <span class="n" style="color: #333;">stmts</span> <span class="n" style="color: #333;">exp_ty</span> <span class="o" style="font-weight: 600;">$</span> <span class="nf" style="color: #900; font-weight: 600;">\</span> <span class="n" style="color: #333;">inner_res_ty</span> <span class="o" style="font-weight: 600;">-></span></span>
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887
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<pre style="margin: 0;"> <span id="LC888" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">do</span> <span class="p">{</span> <span class="n" style="color: #333;">tup_rets</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">zipWithM</span> <span class="n" style="color: #333;">tcCheckId</span> <span class="n" style="color: #333;">tup_names</span></span>
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889
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<pre style="margin: 0;"> <span id="LC889" class="line" lang="haskell"> <span class="p">(</span><span class="n" style="color: #333;">map</span> <span class="n" style="color: #333;">mkCheckExpType</span> <span class="n" style="color: #333;">tup_elt_tys</span><span class="p">)</span></span>
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<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -894,7 +895,7 @@ tcDoStmt ctxt (RecStmt { recS_stmts = stmts, recS_later_ids = later_names</td>
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<pre style="margin: 0;"> <span id="LC895" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">return</span> <span class="p">(</span><span class="n" style="color: #333;">ret_op'</span><span class="p">,</span> <span class="n" style="color: #333;">tup_rets</span><span class="p">)</span> <span class="p">}</span></span>
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896
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<pre style="margin: 0;"> <span id="LC896" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC897" class="line" lang="haskell"> <span class="p">;</span> <span class="p">((</span><span class="kr" style="font-weight: 600;">_</span><span class="p">,</span> <span class="n" style="color: #333;">mfix_op'</span><span class="p">),</span> <span class="n" style="color: #333;">mfix_res_ty</span><span class="p">)</span></span>
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<pre style="margin: 0;">-<span id="LC897" class="line" lang="haskell"> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">tcInfer<span class="idiff left right">Inst</span></span> <span class="o" style="font-weight: 600;">$</span> <span class="nf" style="color: #900; font-weight: 600;">\</span> <span class="n" style="color: #333;">exp_ty</span> <span class="o" style="font-weight: 600;">-></span></span>
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898
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<pre style="margin: 0;">+<span id="LC898" class="line" lang="haskell"> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">tcInfer</span> <span class="o" style="font-weight: 600;">$</span> <span class="nf" style="color: #900; font-weight: 600;">\</span> <span class="n" style="color: #333;">exp_ty</span> <span class="o" style="font-weight: 600;">-></span></span>
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899
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<pre style="margin: 0;"> <span id="LC899" class="line" lang="haskell"> <span class="n" style="color: #333;">tcSyntaxOp</span> <span class="kt" style="color: #458; font-weight: 600;">DoOrigin</span> <span class="n" style="color: #333;">mfix_op</span></span>
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900
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<pre style="margin: 0;"> <span id="LC900" class="line" lang="haskell"> <span class="p">[</span><span class="n" style="color: #333;">synKnownType</span> <span class="p">(</span><span class="n" style="color: #333;">mkVisFunTy</span> <span class="n" style="color: #333;">tup_ty</span> <span class="n" style="color: #333;">stmts_ty</span><span class="p">)]</span> <span class="n" style="color: #333;">exp_ty</span> <span class="o" style="font-weight: 600;">$</span></span>
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<pre style="margin: 0;"> <span id="LC901" class="line" lang="haskell"> <span class="nf" style="color: #900; font-weight: 600;">\</span> <span class="kr" style="font-weight: 600;">_</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">return</span> <span class="nb" style="color: #0086b3;">()</span></span>
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<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -959,7 +960,7 @@ When typechecking</td>
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960
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<pre style="margin: 0;"> <span id="LC960" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;"> do { bar; ... } :: IO ()</span></span>
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961
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<pre style="margin: 0;"> <span id="LC961" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">we want to typecheck 'bar' in the knowledge that it should be an IO thing,</span></span>
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961
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962
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<pre style="margin: 0;"> <span id="LC962" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">pushing info from the context into the RHS. To do this, we check the</span></span>
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<pre style="margin: 0;">-<span id="LC962" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">rebindable syntax first, and push that information into (tc<span class="idiff left right">Mono</span>ExprNC rhs).</span></span>
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<pre style="margin: 0;">+<span id="LC963" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">rebindable syntax first, and push that information into (tc<span class="idiff left right">L</span>ExprNC rhs).</span></span>
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<pre style="margin: 0;"> <span id="LC964" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">Otherwise the error shows up when checking the rebindable syntax, and</span></span>
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<pre style="margin: 0;"> <span id="LC965" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">the expected/inferred stuff is back to front (see #3613).</span></span>
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<pre style="margin: 0;"> <span id="LC966" class="line" lang="haskell"></span>
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<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -991,7 +992,7 @@ tcApplicativeStmts</td>
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<pre style="margin: 0;"> <span id="LC992" class="line" lang="haskell"><span class="n" style="color: #333;">tcApplicativeStmts</span> <span class="n" style="color: #333;">ctxt</span> <span class="n" style="color: #333;">pairs</span> <span class="n" style="color: #333;">rhs_ty</span> <span class="n" style="color: #333;">thing_inside</span></span>
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<pre style="margin: 0;"> <span id="LC993" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">do</span> <span class="p">{</span> <span class="n" style="color: #333;">body_ty</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">newFlexiTyVarTy</span> <span class="n" style="color: #333;">liftedTypeKind</span></span>
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<pre style="margin: 0;"> <span id="LC994" class="line" lang="haskell"> <span class="p">;</span> <span class="kr" style="font-weight: 600;">let</span> <span class="n" style="color: #333;">arity</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">length</span> <span class="n" style="color: #333;">pairs</span></span>
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<pre style="margin: 0;">-<span id="LC994" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">ts</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">replicateM</span> <span class="p">(</span><span class="n" style="color: #333;">arity</span><span class="o" style="font-weight: 600;">-</span><span class="mi" style="color: #099;">1</span><span class="p">)</span> <span class="o" style="font-weight: 600;">$</span> <span class="n" style="color: #333;">newInferExpType<span class="idiff left right">Inst</span></span></span>
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<pre style="margin: 0;">+<span id="LC995" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">ts</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">replicateM</span> <span class="p">(</span><span class="n" style="color: #333;">arity</span><span class="o" style="font-weight: 600;">-</span><span class="mi" style="color: #099;">1</span><span class="p">)</span> <span class="o" style="font-weight: 600;">$</span> <span class="n" style="color: #333;">newInferExpType</span></span>
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<pre style="margin: 0;"> <span id="LC996" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">exp_tys</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">replicateM</span> <span class="n" style="color: #333;">arity</span> <span class="o" style="font-weight: 600;">$</span> <span class="n" style="color: #333;">newFlexiTyVarTy</span> <span class="n" style="color: #333;">liftedTypeKind</span></span>
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<pre style="margin: 0;"> <span id="LC997" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">pat_tys</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">replicateM</span> <span class="n" style="color: #333;">arity</span> <span class="o" style="font-weight: 600;">$</span> <span class="n" style="color: #333;">newFlexiTyVarTy</span> <span class="n" style="color: #333;">liftedTypeKind</span></span>
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<pre style="margin: 0;"> <span id="LC998" class="line" lang="haskell"> <span class="p">;</span> <span class="kr" style="font-weight: 600;">let</span> <span class="n" style="color: #333;">fun_ty</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">mkVisFunTys</span> <span class="n" style="color: #333;">pat_tys</span> <span class="n" style="color: #333;">body_ty</span></span>
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<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -1035,7 +1036,7 @@ tcApplicativeStmts ctxt pairs rhs_ty thing_inside</td>
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<pre style="margin: 0;"> <span id="LC1036" class="line" lang="haskell"> <span class="p">},</span> <span class="n" style="color: #333;">pat_ty</span><span class="p">,</span> <span class="n" style="color: #333;">exp_ty</span><span class="p">)</span></span>
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1037
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<pre style="margin: 0;"> <span id="LC1037" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">setSrcSpan</span> <span class="p">(</span><span class="n" style="color: #333;">combineSrcSpans</span> <span class="p">(</span><span class="n" style="color: #333;">getLoc</span> <span class="n" style="color: #333;">pat</span><span class="p">)</span> <span class="p">(</span><span class="n" style="color: #333;">getLoc</span> <span class="n" style="color: #333;">rhs</span><span class="p">))</span> <span class="o" style="font-weight: 600;">$</span></span>
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1038
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<pre style="margin: 0;"> <span id="LC1038" class="line" lang="haskell"> <span class="n" style="color: #333;">addErrCtxt</span> <span class="p">(</span><span class="n" style="color: #333;">pprStmtInCtxt</span> <span class="n" style="color: #333;">ctxt</span> <span class="p">(</span><span class="n" style="color: #333;">mkBindStmt</span> <span class="n" style="color: #333;">pat</span> <span class="n" style="color: #333;">rhs</span><span class="p">))</span> <span class="o" style="font-weight: 600;">$</span></span>
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<pre style="margin: 0;">-<span id="LC1038" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">do</span> <span class="p">{</span> <span class="n" style="color: #333;">rhs'</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">tc<span class="idiff left right">Mono</span>ExprNC</span> <span class="n" style="color: #333;">rhs</span> <span class="p">(</span><span class="n" style="color: #333;">mkCheckExpType</span> <span class="n" style="color: #333;">exp_ty</span><span class="p">)</span></span>
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<pre style="margin: 0;">+<span id="LC1039" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">do</span> <span class="p">{</span> <span class="n" style="color: #333;">rhs'</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">tc<span class="idiff left right">L</span>ExprNC</span> <span class="n" style="color: #333;">rhs</span> <span class="p">(</span><span class="n" style="color: #333;">mkCheckExpType</span> <span class="n" style="color: #333;">exp_ty</span><span class="p">)</span></span>
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<pre style="margin: 0;"> <span id="LC1040" class="line" lang="haskell"> <span class="p">;</span> <span class="p">(</span><span class="n" style="color: #333;">pat'</span><span class="p">,</span> <span class="kr" style="font-weight: 600;">_</span><span class="p">)</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">tcCheckPat</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">StmtCtxt</span> <span class="n" style="color: #333;">ctxt</span><span class="p">)</span> <span class="n" style="color: #333;">pat</span> <span class="n" style="color: #333;">pat_ty</span> <span class="o" style="font-weight: 600;">$</span></span>
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1040
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<pre style="margin: 0;"> <span id="LC1041" class="line" lang="haskell"> <span class="n" style="color: #333;">return</span> <span class="nb" style="color: #0086b3;">()</span></span>
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1042
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<pre style="margin: 0;"> <span id="LC1042" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">fail_op'</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">tcMonadFailOp</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">DoPatOrigin</span> <span class="n" style="color: #333;">pat</span><span class="p">)</span> <span class="n" style="color: #333;">pat'</span> <span class="n" style="color: #333;">fail_op</span> <span class="n" style="color: #333;">body_ty</span></span>
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<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -1051,7 +1052,7 @@ tcApplicativeStmts ctxt pairs rhs_ty thing_inside</td>
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1051
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1052
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<pre style="margin: 0;"> <span id="LC1052" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">do</span> <span class="p">{</span> <span class="p">(</span><span class="n" style="color: #333;">stmts'</span><span class="p">,</span> <span class="p">(</span><span class="n" style="color: #333;">ret'</span><span class="p">,</span><span class="n" style="color: #333;">pat'</span><span class="p">))</span> <span class="o" style="font-weight: 600;"><-</span></span>
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1052
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1053
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<pre style="margin: 0;"> <span id="LC1053" class="line" lang="haskell"> <span class="n" style="color: #333;">tcStmtsAndThen</span> <span class="n" style="color: #333;">ctxt</span> <span class="n" style="color: #333;">tcDoStmt</span> <span class="n" style="color: #333;">stmts</span> <span class="p">(</span><span class="n" style="color: #333;">mkCheckExpType</span> <span class="n" style="color: #333;">exp_ty</span><span class="p">)</span> <span class="o" style="font-weight: 600;">$</span></span>
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1053
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1054
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<pre style="margin: 0;"> <span id="LC1054" class="line" lang="haskell"> <span class="nf" style="color: #900; font-weight: 600;">\</span><span class="n" style="color: #333;">res_ty</span> <span class="o" style="font-weight: 600;">-></span> <span class="kr" style="font-weight: 600;">do</span></span>
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1054
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<pre style="margin: 0;">-<span id="LC1054" class="line" lang="haskell"> <span class="p">{</span> <span class="kt" style="color: #458; font-weight: 600;"><span class="idiff left">L</span></span><span class="idiff"> </span><span class="kr" style="font-weight: 600;"><span class="idiff">_</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">ret'</span></span><span class="idiff"> </span><span class="o" style="font-weight: 600;"><span class="idiff"><-</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">tcMonoExprNC</span></span><span class="idiff"> </span><span class="p"><span class="idiff">(</span></span><span class="n" style="color: #333;"><span class="idiff">noLoc</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">ret</span></span><span class="p"><span class="idiff right">)</span></span> <span class="n" style="color: #333;">res_ty</span></span>
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<pre style="margin: 0;">+<span id="LC1055" class="line" lang="haskell"> <span class="p">{</span> <span class="n" style="color: #333;"><span class="idiff left">ret'</span></span><span class="idiff"> </span><span class="o" style="font-weight: 600;"><span class="idiff"><-</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">tcExpr</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff right">ret</span></span> <span class="n" style="color: #333;">res_ty</span></span>
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1056
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<pre style="margin: 0;"> <span id="LC1056" class="line" lang="haskell"> <span class="p">;</span> <span class="p">(</span><span class="n" style="color: #333;">pat'</span><span class="p">,</span> <span class="kr" style="font-weight: 600;">_</span><span class="p">)</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">tcCheckPat</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">StmtCtxt</span> <span class="n" style="color: #333;">ctxt</span><span class="p">)</span> <span class="n" style="color: #333;">pat</span> <span class="n" style="color: #333;">pat_ty</span> <span class="o" style="font-weight: 600;">$</span></span>
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<pre style="margin: 0;"> <span id="LC1057" class="line" lang="haskell"> <span class="n" style="color: #333;">return</span> <span class="nb" style="color: #0086b3;">()</span></span>
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<pre style="margin: 0;"> <span id="LC1058" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">return</span> <span class="p">(</span><span class="n" style="color: #333;">ret'</span><span class="p">,</span> <span class="n" style="color: #333;">pat'</span><span class="p">)</span></span>
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<a href="https://gitlab.haskell.org/ghc/ghc/-/commit/f39a0d86de843c105dc9cd4e0bd631176300d7f7#3ee8be814b6c6727880deab3772e6af922524bf0"><strong>compiler/GHC/Tc/Gen/Pat.hs</strong></a>
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<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -28,7 +28,7 @@ where</td>
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<pre style="margin: 0;"> <span id="LC28" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC29" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GhcPrelude</span></span>
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<pre style="margin: 0;"> <span id="LC30" class="line" lang="haskell"></span>
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<pre style="margin: 0;">-<span id="LC31" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="err" style="color: #a61717; background-color: #e3d2d2;">{-#</span> <span class="nn" style="color: #555;">SOURCE</span> <span class="o" style="font-weight: 600;">#-</span><span class="p">}</span> <span class="kt" style="color: #458; font-weight: 600;">GHC</span><span class="o" style="font-weight: 600;">.</span><span class="kt" style="color: #458; font-weight: 600;">Tc</span><span class="o" style="font-weight: 600;">.</span><span class="kt" style="color: #458; font-weight: 600;">Gen</span><span class="o" style="font-weight: 600;">.</span><span class="kt" style="color: #458; font-weight: 600;">Expr</span><span class="p">(</span> <span class="n" style="color: #333;">tcSyntaxOp</span><span class="p">,</span> <span class="n" style="color: #333;">tcSyntaxOpGen</span><span class="p">,</span> <span class="n" style="color: #333;">tcInfer<span class="idiff left right">AppHead</span></span> <span class="p">)</span></span>
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<pre style="margin: 0;">+<span id="LC31" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="err" style="color: #a61717; background-color: #e3d2d2;">{-#</span> <span class="nn" style="color: #555;">SOURCE</span> <span class="o" style="font-weight: 600;">#-</span><span class="p">}</span> <span class="kt" style="color: #458; font-weight: 600;">GHC</span><span class="o" style="font-weight: 600;">.</span><span class="kt" style="color: #458; font-weight: 600;">Tc</span><span class="o" style="font-weight: 600;">.</span><span class="kt" style="color: #458; font-weight: 600;">Gen</span><span class="o" style="font-weight: 600;">.</span><span class="kt" style="color: #458; font-weight: 600;">Expr</span><span class="p">(</span> <span class="n" style="color: #333;">tcSyntaxOp</span><span class="p">,</span> <span class="n" style="color: #333;">tcSyntaxOpGen</span><span class="p">,</span> <span class="n" style="color: #333;">tcInfer<span class="idiff left right">Rho</span></span> <span class="p">)</span></span>
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<pre style="margin: 0;"> <span id="LC32" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC33" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Hs</span></span>
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<pre style="margin: 0;"> <span id="LC34" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Tc.Utils.Zonk</span></span>
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<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -116,7 +116,7 @@ tcInferPat :: HsMatchContext GhcRn -> LPat GhcRn</td>
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<pre style="margin: 0;"> <span id="LC116" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TcM</span> <span class="n" style="color: #333;">a</span></span>
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<pre style="margin: 0;"> <span id="LC117" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TcM</span> <span class="p">((</span><span class="kt" style="color: #458; font-weight: 600;">LPat</span> <span class="kt" style="color: #458; font-weight: 600;">GhcTcId</span><span class="p">,</span> <span class="n" style="color: #333;">a</span><span class="p">),</span> <span class="kt" style="color: #458; font-weight: 600;">TcSigmaType</span><span class="p">)</span></span>
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<pre style="margin: 0;"> <span id="LC118" class="line" lang="haskell"><span class="n" style="color: #333;">tcInferPat</span> <span class="n" style="color: #333;">ctxt</span> <span class="n" style="color: #333;">pat</span> <span class="n" style="color: #333;">thing_inside</span></span>
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<pre style="margin: 0;">-<span id="LC119" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">tcInfer<span class="idiff left">Inst</span></span><span class="idiff"> </span><span class="o" style="font-weight: 600;"><span class="idiff">$</span></span><span class="idiff"> </span><span class="nf" style="color: #900; font-weight: 600;"><span class="idiff">\</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">exp_ty</span></span><span class="idiff"> </span><span class="o" style="font-weight: 600;"><span class="idiff">-></span></span><span class="idiff"> </span><span class="c1" style="color: #998; font-style: italic;"><span class="idiff right">-- The ir_inst flag is irrelevant in tcPat</span></span></span>
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<pre style="margin: 0;">+<span id="LC119" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">tcInfer</span><span class="idiff left"> </span><span class="o" style="font-weight: 600;"><span class="idiff">$</span></span><span class="idiff"> </span><span class="nf" style="color: #900; font-weight: 600;"><span class="idiff">\</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">exp_ty</span></span><span class="idiff"> </span><span class="o" style="font-weight: 600;"><span class="idiff right">-></span></span></span>
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<pre style="margin: 0;"> <span id="LC120" class="line" lang="haskell"> <span class="n" style="color: #333;">tc_lpat</span> <span class="n" style="color: #333;">pat</span> <span class="n" style="color: #333;">exp_ty</span> <span class="n" style="color: #333;">penv</span> <span class="n" style="color: #333;">thing_inside</span></span>
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<pre style="margin: 0;"> <span id="LC121" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">where</span></span>
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<pre style="margin: 0;"> <span id="LC122" class="line" lang="haskell"> <span class="n" style="color: #333;">penv</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">PE</span> <span class="p">{</span> <span class="n" style="color: #333;">pe_lazy</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">False</span><span class="p">,</span> <span class="n" style="color: #333;">pe_ctxt</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">LamPat</span> <span class="n" style="color: #333;">ctxt</span><span class="p">,</span> <span class="n" style="color: #333;">pe_orig</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">PatOrigin</span> <span class="p">}</span></span>
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<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -399,12 +399,17 @@ tc_pat penv (AsPat x (L nm_loc name) pat) pat_ty thing_inside</td>
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<pre style="margin: 0;"> <span id="LC399" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC400" class="line" lang="haskell"><span class="n" style="color: #333;">tc_pat</span> <span class="n" style="color: #333;">penv</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">ViewPat</span> <span class="kr" style="font-weight: 600;">_</span> <span class="n" style="color: #333;">expr</span> <span class="n" style="color: #333;">pat</span><span class="p">)</span> <span class="n" style="color: #333;">overall_pat_ty</span> <span class="n" style="color: #333;">thing_inside</span></span>
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<pre style="margin: 0;"> <span id="LC401" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">do</span> <span class="p">{</span></span>
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402
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<pre style="margin: 0;">-<span id="LC402" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- Using tcInferAppHead here, rather than tcMonoExpr, lets us</span></span>
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403
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<pre style="margin: 0;">-<span id="LC403" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- have view functions with types like:</span></span>
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<pre style="margin: 0;">-<span id="LC404" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- (forall a. blah) -> forall b. burble</span></span>
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<pre style="margin: 0;">-<span id="LC405" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- So the overall_pat_ty is (forall a. blah), while the</span></span>
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<pre style="margin: 0;">-<span id="LC406" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- inner pattern is checked with (forall b. burble)</span></span>
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<pre style="margin: 0;">-<span id="LC407" class="line" lang="haskell"> <span class="p">;</span> <span class="p">(</span><span class="n" style="color: #333;">expr'</span><span class="p">,</span><span class="n" style="color: #333;">expr_ty</span><span class="p">)</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">tcInferAppHead</span> <span class="n" style="color: #333;">expr</span></span>
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<pre style="margin: 0;">+<span id="LC402" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- We use tcInferRho here.</span></span>
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<pre style="margin: 0;">+<span id="LC403" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- If we have a view function with types like:</span></span>
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<pre style="margin: 0;">+<span id="LC404" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- blah -> forall b. burble</span></span>
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<pre style="margin: 0;">+<span id="LC405" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- then simple-subsumption means that 'forall b' won't be instantiated</span></span>
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<pre style="margin: 0;">+<span id="LC406" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- so we can typecheck the inner pattern with that type</span></span>
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<pre style="margin: 0;">+<span id="LC407" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- Until simple subsumption, it'll be deeply instantiated, but</span></span>
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408
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<pre style="margin: 0;">+<span id="LC408" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- probably no one will notice.</span></span>
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<pre style="margin: 0;">+<span id="LC409" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- An exotic example:</span></span>
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<pre style="margin: 0;">+<span id="LC410" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- pair :: forall a. a -> forall b. b -> (a,b)</span></span>
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<pre style="margin: 0;">+<span id="LC411" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- f (pair True -> x) = ...here (x :: forall b. b -> (Bool,b))</span></span>
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<pre style="margin: 0;">+<span id="LC412" class="line" lang="haskell"> <span class="p">;</span> <span class="p">(</span><span class="n" style="color: #333;">expr'</span><span class="p">,</span><span class="n" style="color: #333;">expr_ty</span><span class="p">)</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">tcInferRho</span> <span class="n" style="color: #333;">expr</span></span>
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408
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<pre style="margin: 0;"> <span id="LC413" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC414" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- Expression must be a function</span></span>
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<pre style="margin: 0;"> <span id="LC415" class="line" lang="haskell"> <span class="p">;</span> <span class="kr" style="font-weight: 600;">let</span> <span class="n" style="color: #333;">expr_orig</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">lexprCtOrigin</span> <span class="n" style="color: #333;">expr</span></span>
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<a href="https://gitlab.haskell.org/ghc/ghc/-/commit/f39a0d86de843c105dc9cd4e0bd631176300d7f7#04338da99bccd89402218ca19c5724762f0fe641"><strong>compiler/GHC/Tc/Gen/Rule.hs</strong></a>
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<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -201,7 +201,7 @@ generateRuleConstraints ty_bndrs tm_bndrs lhs rhs</td>
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201
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<pre style="margin: 0;"> <span id="LC201" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">do</span> <span class="p">{</span> <span class="c1" style="color: #998; font-style: italic;">-- See Note [Solve order for RULES]</span></span>
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<pre style="margin: 0;"> <span id="LC202" class="line" lang="haskell"> <span class="p">((</span><span class="n" style="color: #333;">lhs'</span><span class="p">,</span> <span class="n" style="color: #333;">rule_ty</span><span class="p">),</span> <span class="n" style="color: #333;">lhs_wanted</span><span class="p">)</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">captureConstraints</span> <span class="p">(</span><span class="n" style="color: #333;">tcInferRho</span> <span class="n" style="color: #333;">lhs</span><span class="p">)</span></span>
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<pre style="margin: 0;"> <span id="LC203" class="line" lang="haskell"> <span class="p">;</span> <span class="p">(</span><span class="n" style="color: #333;">rhs'</span><span class="p">,</span> <span class="n" style="color: #333;">rhs_wanted</span><span class="p">)</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">captureConstraints</span> <span class="o" style="font-weight: 600;">$</span></span>
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<pre style="margin: 0;">-<span id="LC204" class="line" lang="haskell"> <span class="n" style="color: #333;">tc<span class="idiff left right">Mono</span>Expr</span> <span class="n" style="color: #333;">rhs</span> <span class="p">(</span><span class="n" style="color: #333;">mkCheckExpType</span> <span class="n" style="color: #333;">rule_ty</span><span class="p">)</span></span>
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<pre style="margin: 0;">+<span id="LC204" class="line" lang="haskell"> <span class="n" style="color: #333;">tc<span class="idiff left right">L</span>Expr</span> <span class="n" style="color: #333;">rhs</span> <span class="p">(</span><span class="n" style="color: #333;">mkCheckExpType</span> <span class="n" style="color: #333;">rule_ty</span><span class="p">)</span></span>
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<pre style="margin: 0;"> <span id="LC205" class="line" lang="haskell"> <span class="p">;</span> <span class="kr" style="font-weight: 600;">let</span> <span class="n" style="color: #333;">all_lhs_wanted</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">bndr_wanted</span> <span class="p">`</span><span class="n" style="color: #333;">andWC</span><span class="p">`</span> <span class="n" style="color: #333;">lhs_wanted</span></span>
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<pre style="margin: 0;"> <span id="LC206" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">return</span> <span class="p">(</span><span class="n" style="color: #333;">id_bndrs</span><span class="p">,</span> <span class="n" style="color: #333;">lhs'</span><span class="p">,</span> <span class="n" style="color: #333;">all_lhs_wanted</span><span class="p">,</span> <span class="n" style="color: #333;">rhs'</span><span class="p">,</span> <span class="n" style="color: #333;">rhs_wanted</span><span class="p">,</span> <span class="n" style="color: #333;">rule_ty</span><span class="p">)</span> <span class="p">}</span> <span class="p">}</span></span>
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<pre style="margin: 0;"> <span id="LC207" class="line" lang="haskell"></span>
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<a href="https://gitlab.haskell.org/ghc/ghc/-/commit/f39a0d86de843c105dc9cd4e0bd631176300d7f7#9ea832ccdb4b5f7508a1efd6caedeafa16b269e7"><strong>compiler/GHC/Tc/Gen/Splice.hs</strong></a>
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<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -617,7 +617,7 @@ tcNestedSplice pop_stage (TcPending ps_var lie_var q@(QuoteWrapper _ m_var)) spl</td>
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<pre style="margin: 0;"> <span id="LC617" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">meta_exp_ty</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">tcTExpTy</span> <span class="n" style="color: #333;">m_var</span> <span class="n" style="color: #333;">res_ty</span></span>
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<pre style="margin: 0;"> <span id="LC618" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">expr'</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">setStage</span> <span class="n" style="color: #333;">pop_stage</span> <span class="o" style="font-weight: 600;">$</span></span>
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<pre style="margin: 0;"> <span id="LC619" class="line" lang="haskell"> <span class="n" style="color: #333;">setConstraintVar</span> <span class="n" style="color: #333;">lie_var</span> <span class="o" style="font-weight: 600;">$</span></span>
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<pre style="margin: 0;">-<span id="LC620" class="line" lang="haskell"> <span class="n" style="color: #333;">tc<span class="idiff left right">Mono</span>Expr</span> <span class="n" style="color: #333;">expr</span> <span class="p">(</span><span class="n" style="color: #333;">mkCheckExpType</span> <span class="n" style="color: #333;">meta_exp_ty</span><span class="p">)</span></span>
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<pre style="margin: 0;">+<span id="LC620" class="line" lang="haskell"> <span class="n" style="color: #333;">tc<span class="idiff left right">L</span>Expr</span> <span class="n" style="color: #333;">expr</span> <span class="p">(</span><span class="n" style="color: #333;">mkCheckExpType</span> <span class="n" style="color: #333;">meta_exp_ty</span><span class="p">)</span></span>
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<pre style="margin: 0;"> <span id="LC621" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">untypeq</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">tcLookupId</span> <span class="n" style="color: #333;">unTypeQName</span></span>
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<pre style="margin: 0;"> <span id="LC622" class="line" lang="haskell"> <span class="p">;</span> <span class="kr" style="font-weight: 600;">let</span> <span class="n" style="color: #333;">expr''</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">mkHsApp</span></span>
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<pre style="margin: 0;"> <span id="LC623" class="line" lang="haskell"> <span class="p">(</span><span class="n" style="color: #333;">mkLHsWrap</span> <span class="p">(</span><span class="n" style="color: #333;">applyQuoteWrapper</span> <span class="n" style="color: #333;">q</span><span class="p">)</span></span>
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<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -640,7 +640,7 @@ tcTopSplice expr res_ty</td>
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<pre style="margin: 0;"> <span id="LC640" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- Top level splices must still be of type Q (TExp a)</span></span>
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<pre style="margin: 0;"> <span id="LC641" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">meta_exp_ty</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">tcTExpTy</span> <span class="n" style="color: #333;">q_type</span> <span class="n" style="color: #333;">res_ty</span></span>
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<pre style="margin: 0;"> <span id="LC642" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">q_expr</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">tcTopSpliceExpr</span> <span class="kt" style="color: #458; font-weight: 600;">Typed</span> <span class="o" style="font-weight: 600;">$</span></span>
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<pre style="margin: 0;">-<span id="LC643" class="line" lang="haskell"> <span class="n" style="color: #333;">tc<span class="idiff left right">Mono</span>Expr</span> <span class="n" style="color: #333;">expr</span> <span class="p">(</span><span class="n" style="color: #333;">mkCheckExpType</span> <span class="n" style="color: #333;">meta_exp_ty</span><span class="p">)</span></span>
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<pre style="margin: 0;">+<span id="LC643" class="line" lang="haskell"> <span class="n" style="color: #333;">tc<span class="idiff left right">L</span>Expr</span> <span class="n" style="color: #333;">expr</span> <span class="p">(</span><span class="n" style="color: #333;">mkCheckExpType</span> <span class="n" style="color: #333;">meta_exp_ty</span><span class="p">)</span></span>
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<pre style="margin: 0;"> <span id="LC644" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">lcl_env</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">getLclEnv</span></span>
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<pre style="margin: 0;"> <span id="LC645" class="line" lang="haskell"> <span class="p">;</span> <span class="kr" style="font-weight: 600;">let</span> <span class="n" style="color: #333;">delayed_splice</span></span>
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<pre style="margin: 0;"> <span id="LC646" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">DelayedSplice</span> <span class="n" style="color: #333;">lcl_env</span> <span class="n" style="color: #333;">expr</span> <span class="n" style="color: #333;">res_ty</span> <span class="n" style="color: #333;">q_expr</span></span>
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<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -677,7 +677,7 @@ runTopSplice (DelayedSplice lcl_env orig_expr res_ty q_expr)</td>
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<pre style="margin: 0;"> <span id="LC677" class="line" lang="haskell"> <span class="n" style="color: #333;">captureConstraints</span> <span class="o" style="font-weight: 600;">$</span></span>
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<pre style="margin: 0;"> <span id="LC678" class="line" lang="haskell"> <span class="n" style="color: #333;">addErrCtxt</span> <span class="p">(</span><span class="n" style="color: #333;">spliceResultDoc</span> <span class="n" style="color: #333;">zonked_q_expr</span><span class="p">)</span> <span class="o" style="font-weight: 600;">$</span> <span class="kr" style="font-weight: 600;">do</span></span>
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<pre style="margin: 0;"> <span id="LC679" class="line" lang="haskell"> <span class="p">{</span> <span class="p">(</span><span class="n" style="color: #333;">exp3</span><span class="p">,</span> <span class="n" style="color: #333;">_fvs</span><span class="p">)</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">rnLExpr</span> <span class="n" style="color: #333;">expr2</span></span>
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<pre style="margin: 0;">-<span id="LC680" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">tc<span class="idiff left right">Mono</span>Expr</span> <span class="n" style="color: #333;">exp3</span> <span class="p">(</span><span class="n" style="color: #333;">mkCheckExpType</span> <span class="n" style="color: #333;">zonked_ty</span><span class="p">)}</span></span>
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<pre style="margin: 0;">+<span id="LC680" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">tc<span class="idiff left right">L</span>Expr</span> <span class="n" style="color: #333;">exp3</span> <span class="p">(</span><span class="n" style="color: #333;">mkCheckExpType</span> <span class="n" style="color: #333;">zonked_ty</span><span class="p">)}</span></span>
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<pre style="margin: 0;"> <span id="LC681" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">ev</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">simplifyTop</span> <span class="n" style="color: #333;">wcs</span></span>
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<pre style="margin: 0;"> <span id="LC682" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">return</span> <span class="o" style="font-weight: 600;">$</span> <span class="n" style="color: #333;">unLoc</span> <span class="p">(</span><span class="n" style="color: #333;">mkHsDictLet</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">EvBinds</span> <span class="n" style="color: #333;">ev</span><span class="p">)</span> <span class="n" style="color: #333;">res</span><span class="p">)</span></span>
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<pre style="margin: 0;"> <span id="LC683" class="line" lang="haskell"> <span class="p">}</span></span>
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<a href="https://gitlab.haskell.org/ghc/ghc/-/commit/f39a0d86de843c105dc9cd4e0bd631176300d7f7#e65390fa5a32c453a81a1c9a3e1c4464d155ca4a"><strong>compiler/GHC/Tc/Module.hs</strong></a>
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<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -1787,8 +1787,8 @@ check_main dflags tcg_env explicit_mod_hdr export_ies</td>
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<pre style="margin: 0;"> <span id="LC1787" class="line" lang="haskell"> <span class="p">;</span> <span class="p">(</span><span class="n" style="color: #333;">ev_binds</span><span class="p">,</span> <span class="n" style="color: #333;">main_expr</span><span class="p">)</span></span>
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<pre style="margin: 0;"> <span id="LC1788" class="line" lang="haskell"> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">checkConstraints</span> <span class="n" style="color: #333;">skol_info</span> <span class="kt" style="color: #458; font-weight: 600;">[]</span> <span class="kt" style="color: #458; font-weight: 600;">[]</span> <span class="o" style="font-weight: 600;">$</span></span>
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<pre style="margin: 0;"> <span id="LC1789" class="line" lang="haskell"> <span class="n" style="color: #333;">addErrCtxt</span> <span class="n" style="color: #333;">mainCtxt</span> <span class="o" style="font-weight: 600;">$</span></span>
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<pre style="margin: 0;">-<span id="LC1790" class="line" lang="haskell"> <span class="n" style="color: #333;">tc<span class="idiff left right">Mono</span>Expr</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">L</span> <span class="n" style="color: #333;">loc</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">HsVar</span> <span class="n" style="color: #333;">noExtField</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">L</span> <span class="n" style="color: #333;">loc</span> <span class="n" style="color: #333;">main_name</span><span class="p">)))</span></span>
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<pre style="margin: 0;">-<span id="LC1791" class="line" lang="haskell"> <span class="idiff left right"> </span><span class="p">(</span><span class="n" style="color: #333;">mkCheckExpType</span> <span class="n" style="color: #333;">io_ty</span><span class="p">)</span></span>
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<pre style="margin: 0;">+<span id="LC1790" class="line" lang="haskell"> <span class="n" style="color: #333;">tc<span class="idiff left right">L</span>Expr</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">L</span> <span class="n" style="color: #333;">loc</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">HsVar</span> <span class="n" style="color: #333;">noExtField</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">L</span> <span class="n" style="color: #333;">loc</span> <span class="n" style="color: #333;">main_name</span><span class="p">)))</span></span>
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<pre style="margin: 0;">+<span id="LC1791" class="line" lang="haskell"> <span class="p">(</span><span class="n" style="color: #333;">mkCheckExpType</span> <span class="n" style="color: #333;">io_ty</span><span class="p">)</span></span>
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<pre style="margin: 0;"> <span id="LC1792" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC1793" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- See Note [Root-main Id]</span></span>
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<pre style="margin: 0;"> <span id="LC1794" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- Construct the binding</span></span>
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<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -2495,8 +2495,7 @@ tcRnExpr hsc_env mode rdr_expr</td>
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<pre style="margin: 0;"> <span id="LC2495" class="line" lang="haskell"> <span class="p">((</span><span class="n" style="color: #333;">tclvl</span><span class="p">,</span> <span class="n" style="color: #333;">res_ty</span><span class="p">),</span> <span class="n" style="color: #333;">lie</span><span class="p">)</span></span>
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<pre style="margin: 0;"> <span id="LC2496" class="line" lang="haskell"> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">captureTopConstraints</span> <span class="o" style="font-weight: 600;">$</span></span>
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<pre style="margin: 0;"> <span id="LC2497" class="line" lang="haskell"> <span class="n" style="color: #333;">pushTcLevelM</span> <span class="o" style="font-weight: 600;">$</span></span>
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<pre style="margin: 0;">-<span id="LC2498" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">do</span> <span class="p">{</span> <span class="p">(</span><span class="n" style="color: #333;">_tc_expr</span><span class="p">,</span> <span class="n" style="color: #333;">expr_ty</span><span class="p">)</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">tc_infer</span> <span class="n" style="color: #333;">rn_expr</span></span>
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<pre style="margin: 0;">-<span id="LC2499" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">return</span> <span class="n" style="color: #333;">expr_ty</span> <span class="p">}</span> <span class="p">;</span></span>
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<pre style="margin: 0;">+<span id="LC2498" class="line" lang="haskell"> <span class="n" style="color: #333;">tc_infer</span> <span class="n" style="color: #333;">rn_expr</span> <span class="p">;</span></span>
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<pre style="margin: 0;"> <span id="LC2499" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC2500" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- Generalise</span></span>
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2501
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<pre style="margin: 0;"> <span id="LC2501" class="line" lang="haskell"> <span class="p">(</span><span class="n" style="color: #333;">qtvs</span><span class="p">,</span> <span class="n" style="color: #333;">dicts</span><span class="p">,</span> <span class="kr" style="font-weight: 600;">_</span><span class="p">,</span> <span class="n" style="color: #333;">residual</span><span class="p">,</span> <span class="kr" style="font-weight: 600;">_</span><span class="p">)</span></span>
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<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -2522,8 +2521,10 @@ tcRnExpr hsc_env mode rdr_expr</td>
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<pre style="margin: 0;"> <span id="LC2521" class="line" lang="haskell"> <span class="n" style="color: #333;">return</span> <span class="p">(</span><span class="n" style="color: #333;">snd</span> <span class="p">(</span><span class="n" style="color: #333;">normaliseType</span> <span class="n" style="color: #333;">fam_envs</span> <span class="kt" style="color: #458; font-weight: 600;">Nominal</span> <span class="n" style="color: #333;">ty</span><span class="p">))</span></span>
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<pre style="margin: 0;"> <span id="LC2522" class="line" lang="haskell"> <span class="p">}</span></span>
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2524
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<pre style="margin: 0;"> <span id="LC2523" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">where</span></span>
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<pre style="margin: 0;">-<span id="LC2525" class="line" lang="haskell"> <span class="n" style="color: #333;">tc_infer</span> <span class="o" style="font-weight: 600;">|</span> <span class="n" style="color: #333;">inst</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">tcInferRhoNC</span></span>
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2526
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<pre style="margin: 0;">-<span id="LC2526" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">|</span> <span class="n" style="color: #333;">otherwise</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">tcInferAppHead</span></span>
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<pre style="margin: 0;">+<span id="LC2524" class="line" lang="haskell"> <span class="n" style="color: #333;">tc_infer</span> <span class="n" style="color: #333;">expr</span> <span class="o" style="font-weight: 600;">|</span> <span class="n" style="color: #333;">inst</span> <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">do</span> <span class="p">{</span> <span class="p">(</span><span class="kr" style="font-weight: 600;">_</span><span class="p">,</span> <span class="n" style="color: #333;">ty</span><span class="p">)</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">tcInferRhoNC</span> <span class="n" style="color: #333;">expr</span></span>
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<pre style="margin: 0;">+<span id="LC2525" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">return</span> <span class="n" style="color: #333;">ty</span> <span class="p">}</span></span>
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<pre style="margin: 0;">+<span id="LC2526" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">|</span> <span class="n" style="color: #333;">otherwise</span> <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">do</span> <span class="p">{</span> <span class="p">(</span><span class="kr" style="font-weight: 600;">_</span><span class="p">,</span> <span class="kr" style="font-weight: 600;">_</span><span class="p">,</span> <span class="n" style="color: #333;">ty</span><span class="p">)</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">tcInferApp</span> <span class="n" style="color: #333;">expr</span></span>
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<pre style="margin: 0;">+<span id="LC2527" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">return</span> <span class="n" style="color: #333;">ty</span> <span class="p">}</span></span>
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<pre style="margin: 0;"> <span id="LC2528" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- See Note [TcRnExprMode]</span></span>
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<pre style="margin: 0;"> <span id="LC2529" class="line" lang="haskell"> <span class="p">(</span><span class="n" style="color: #333;">inst</span><span class="p">,</span> <span class="n" style="color: #333;">infer_mode</span><span class="p">,</span> <span class="n" style="color: #333;">perhaps_disable_default_warnings</span><span class="p">)</span> <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">case</span> <span class="n" style="color: #333;">mode</span> <span class="kr" style="font-weight: 600;">of</span></span>
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2529
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2530
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<pre style="margin: 0;"> <span id="LC2530" class="line" lang="haskell"> <span class="kt" style="color: #458; font-weight: 600;">TM_Inst</span> <span class="o" style="font-weight: 600;">-></span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">True</span><span class="p">,</span> <span class="kt" style="color: #458; font-weight: 600;">NoRestrictions</span><span class="p">,</span> <span class="n" style="color: #333;">id</span><span class="p">)</span></span>
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<a href="https://gitlab.haskell.org/ghc/ghc/-/commit/f39a0d86de843c105dc9cd4e0bd631176300d7f7#c6e4263ee64c68e57b7525127d98243fce38b1ea"><strong>compiler/GHC/Tc/Utils/Monad.hs</strong></a>
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<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -1063,7 +1063,7 @@ tcTryM :: TcRn r -> TcRn (Maybe r)</td>
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<pre style="margin: 0;"> <span id="LC1063" class="line" lang="haskell"><span class="n" style="color: #333;">tcTryM</span> <span class="n" style="color: #333;">thing_inside</span></span>
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1064
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1064
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<pre style="margin: 0;"> <span id="LC1064" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">do</span> <span class="p">{</span> <span class="n" style="color: #333;">either_res</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">tryM</span> <span class="n" style="color: #333;">thing_inside</span></span>
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1065
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1065
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<pre style="margin: 0;"> <span id="LC1065" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">return</span> <span class="p">(</span><span class="kr" style="font-weight: 600;">case</span> <span class="n" style="color: #333;">either_res</span> <span class="kr" style="font-weight: 600;">of</span></span>
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1066
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<pre style="margin: 0;">-<span id="LC1066" class="line" lang="haskell"> <span class="kt" style="color: #458; font-weight: 600;">Left</span> <span class="kr" style="font-weight: 600;"><span class="idiff left">_</span></span><span class="idiff"> </span><span class="o" style="font-weight: 600;"><span class="idiff right">-></span></span> <span class="kt" style="color: #458; font-weight: 600;">Nothing</span></span>
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<pre style="margin: 0;">+<span id="LC1066" class="line" lang="haskell"> <span class="kt" style="color: #458; font-weight: 600;">Left</span> <span class="n" style="color: #333;"><span class="idiff left">exn</span></span><span class="idiff"> </span><span class="o" style="font-weight: 600;"><span class="idiff">-></span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">pprTrace</span></span><span class="idiff"> </span><span class="s" style="color: #d14;"><span class="idiff">"tcTryM"</span></span><span class="idiff"> </span><span class="p"><span class="idiff">(</span></span><span class="n" style="color: #333;"><span class="idiff">text</span></span><span class="idiff"> </span><span class="p"><span class="idiff">(</span></span><span class="n" style="color: #333;"><span class="idiff">show</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">exn</span></span><span class="p"><span class="idiff right">))</span></span> <span class="kt" style="color: #458; font-weight: 600;">Nothing</span></span>
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1067
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1067
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<pre style="margin: 0;"> <span id="LC1067" class="line" lang="haskell"> <span class="kt" style="color: #458; font-weight: 600;">Right</span> <span class="n" style="color: #333;">r</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Just</span> <span class="n" style="color: #333;">r</span><span class="p">)</span> <span class="p">}</span></span>
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1068
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1068
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<pre style="margin: 0;"> <span id="LC1068" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- In the Left case the exception is always the IOEnv</span></span>
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1069
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1069
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<pre style="margin: 0;"> <span id="LC1069" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- built-in in exception; see IOEnv.failM</span></span>
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<a href="https://gitlab.haskell.org/ghc/ghc/-/commit/f39a0d86de843c105dc9cd4e0bd631176300d7f7#94c96afe1bb3b771ffbcfeeca34ce43ebbe76ccb"><strong>compiler/GHC/Tc/Utils/TcMType.hs</strong></a>
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<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -33,7 +33,7 @@ module GHC.Tc.Utils.TcMType (</td>
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<pre style="margin: 0;"> <span id="LC33" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- Expected types</span></span>
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<pre style="margin: 0;"> <span id="LC34" class="line" lang="haskell"> <span class="kt" style="color: #458; font-weight: 600;">ExpType</span><span class="p">(</span><span class="o" style="font-weight: 600;">..</span><span class="p">),</span> <span class="kt" style="color: #458; font-weight: 600;">ExpSigmaType</span><span class="p">,</span> <span class="kt" style="color: #458; font-weight: 600;">ExpRhoType</span><span class="p">,</span></span>
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<pre style="margin: 0;"> <span id="LC35" class="line" lang="haskell"> <span class="nf" style="color: #900; font-weight: 600;">mkCheckExpType</span><span class="p">,</span></span>
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<pre style="margin: 0;">-<span id="LC36" class="line" lang="haskell"> <span class="nf" style="color: #900; font-weight: 600;">newInferExpType</span><span class="p">,</span><span class="idiff left"> </span><span class="nf" style="color: #900; font-weight: 600;"><span class="idiff">newInferExpTypeInst</span></span><span class="p"><span class="idiff">,</span></span><span class="idiff"> </span><span class="nf" style="color: #900; font-weight: 600;"><span class="idiff">newInferExpTypeNoInst</span></span><span class="p"><span class="idiff right">,</span></span></span>
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<pre style="margin: 0;">+<span id="LC36" class="line" lang="haskell"> <span class="nf" style="color: #900; font-weight: 600;">newInferExpType</span><span class="p">,</span></span>
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<pre style="margin: 0;"> <span id="LC37" class="line" lang="haskell"> <span class="nf" style="color: #900; font-weight: 600;">readExpType</span><span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">readExpType_maybe</span><span class="p">,</span></span>
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<pre style="margin: 0;"> <span id="LC38" class="line" lang="haskell"> <span class="nf" style="color: #900; font-weight: 600;">expTypeToType</span><span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">checkingExpType_maybe</span><span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">checkingExpType</span><span class="p">,</span></span>
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<pre style="margin: 0;"> <span id="LC39" class="line" lang="haskell"> <span class="nf" style="color: #900; font-weight: 600;">tauifyExpType</span><span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">inferResultToType</span><span class="p">,</span></span>
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<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -440,21 +440,14 @@ test gadt/gadt-escape1.</td>
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<pre style="margin: 0;"> <span id="LC440" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC441" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- actual data definition is in GHC.Tc.Utils.TcType</span></span>
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442
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<pre style="margin: 0;"> <span id="LC442" class="line" lang="haskell"></span>
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<pre style="margin: 0;">-<span id="LC443" class="line" lang="haskell"><span class="cd">-- | Make an 'ExpType' suitable for inferring a type of kind * or #.</span></span>
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<pre style="margin: 0;">-<span id="LC444" class="line" lang="haskell"><span class="n" style="color: #333;">newInferExpTypeNoInst</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">TcM</span> <span class="kt" style="color: #458; font-weight: 600;">ExpSigmaType</span></span>
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<pre style="margin: 0;">-<span id="LC445" class="line" lang="haskell"><span class="n" style="color: #333;">newInferExpTypeNoInst</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">newInferExpType</span> <span class="kt" style="color: #458; font-weight: 600;">False</span></span>
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<pre style="margin: 0;">-<span id="LC446" class="line" lang="haskell"></span>
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<pre style="margin: 0;">-<span id="LC447" class="line" lang="haskell"><span class="n" style="color: #333;">newInferExpTypeInst</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">TcM</span> <span class="kt" style="color: #458; font-weight: 600;">ExpRhoType</span></span>
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<pre style="margin: 0;">-<span id="LC448" class="line" lang="haskell"><span class="n" style="color: #333;">newInferExpTypeInst</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">newInferExpType</span> <span class="kt" style="color: #458; font-weight: 600;">True</span></span>
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<pre style="margin: 0;">-<span id="LC449" class="line" lang="haskell"></span>
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<pre style="margin: 0;">-<span id="LC450" class="line" lang="haskell"><span class="n" style="color: #333;">newInferExpType</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">Bool</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TcM</span> <span class="kt" style="color: #458; font-weight: 600;">ExpType</span></span>
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<pre style="margin: 0;">-<span id="LC451" class="line" lang="haskell"><span class="n" style="color: #333;">newInferExpType</span> <span class="n" style="color: #333;">inst</span></span>
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<pre style="margin: 0;">+<span id="LC443" class="line" lang="haskell"><span class="n" style="color: #333;">newInferExpType</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">TcM</span> <span class="kt" style="color: #458; font-weight: 600;">ExpType</span></span>
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<pre style="margin: 0;">+<span id="LC444" class="line" lang="haskell"><span class="n" style="color: #333;">newInferExpType</span></span>
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<pre style="margin: 0;"> <span id="LC445" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">do</span> <span class="p">{</span> <span class="n" style="color: #333;">u</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">newUnique</span></span>
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<pre style="margin: 0;"> <span id="LC446" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">tclvl</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">getTcLevel</span></span>
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<pre style="margin: 0;">-<span id="LC454" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">traceTc</span> <span class="s" style="color: #d14;">"new<span class="idiff left">OpenInferExpType"</span></span><span class="idiff"> </span><span class="p"><span class="idiff">(</span></span><span class="n" style="color: #333;"><span class="idiff">ppr</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">u</span></span><span class="idiff"> </span><span class="o" style="font-weight: 600;"><span class="idiff"><+></span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">ppr</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff right">inst</span></span> <span class="o" style="font-weight: 600;"><+></span> <span class="n" style="color: #333;">ppr</span> <span class="n" style="color: #333;">tclvl</span><span class="p">)</span></span>
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<pre style="margin: 0;">+<span id="LC447" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">traceTc</span> <span class="s" style="color: #d14;">"new<span class="idiff left">InferExpType"</span></span><span class="idiff"> </span><span class="p"><span class="idiff">(</span></span><span class="n" style="color: #333;"><span class="idiff">ppr</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff right">u</span></span> <span class="o" style="font-weight: 600;"><+></span> <span class="n" style="color: #333;">ppr</span> <span class="n" style="color: #333;">tclvl</span><span class="p">)</span></span>
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<pre style="margin: 0;"> <span id="LC448" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">ref</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">newMutVar</span> <span class="kt" style="color: #458; font-weight: 600;">Nothing</span></span>
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<pre style="margin: 0;"> <span id="LC449" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">return</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Infer</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">IR</span> <span class="p">{</span> <span class="n" style="color: #333;">ir_uniq</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">u</span><span class="p">,</span> <span class="n" style="color: #333;">ir_lvl</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">tclvl</span></span>
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<pre style="margin: 0;">-<span id="LC457" class="line" lang="haskell"> <span class="p">,</span> <span class="n" style="color: #333;">ir_ref</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">ref</span><span class="p"><span class="idiff left">,</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">ir_inst</span></span><span class="idiff"> </span><span class="o" style="font-weight: 600;"><span class="idiff">=</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff right">inst</span></span> <span class="p">}))</span> <span class="p">}</span></span>
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<pre style="margin: 0;">+<span id="LC450" class="line" lang="haskell"> <span class="p">,</span> <span class="n" style="color: #333;">ir_ref</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">ref</span> <span class="p">}))</span> <span class="p">}</span></span>
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<pre style="margin: 0;"> <span id="LC451" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC452" class="line" lang="haskell"><span class="cd">-- | Extract a type out of an ExpType, if one exists. But one should always</span></span>
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<pre style="margin: 0;"> <span id="LC453" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- exist. Unless you're quite sure you know what you're doing.</span></span>
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<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -368,13 +368,6 @@ data InferResult</td>
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<pre style="margin: 0;"> <span id="LC368" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC369" class="line" lang="haskell"> <span class="p">,</span> <span class="n" style="color: #333;">ir_lvl</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">TcLevel</span> <span class="c1" style="color: #998; font-style: italic;">-- See Note [TcLevel of ExpType] in GHC.Tc.Utils.TcMType</span></span>
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<pre style="margin: 0;"> <span id="LC370" class="line" lang="haskell"></span>
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<pre style="margin: 0;">-<span id="LC371" class="line" lang="haskell"> <span class="p">,</span> <span class="n" style="color: #333;">ir_inst</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">Bool</span></span>
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<pre style="margin: 0;">-<span id="LC372" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- True <=> deeply instantiate before returning</span></span>
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<pre style="margin: 0;">-<span id="LC373" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- i.e. return a RhoType</span></span>
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<pre style="margin: 0;">-<span id="LC374" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- False <=> do not instantiate before returning</span></span>
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<pre style="margin: 0;">-<span id="LC375" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- i.e. return a SigmaType</span></span>
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<pre style="margin: 0;">-<span id="LC376" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- See Note [Deep instantiation of InferResult] in GHC.Tc.Utils.Unify</span></span>
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<pre style="margin: 0;">-<span id="LC377" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC371" class="line" lang="haskell"> <span class="p">,</span> <span class="n" style="color: #333;">ir_ref</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">IORef</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Maybe</span> <span class="kt" style="color: #458; font-weight: 600;">TcType</span><span class="p">)</span> <span class="p">}</span></span>
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<pre style="margin: 0;"> <span id="LC372" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- The type that fills in this hole should be a Type,</span></span>
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<pre style="margin: 0;"> <span id="LC373" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- that is, its kind should be (TYPE rr) for some rr</span></span>
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<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -387,9 +380,8 @@ instance Outputable ExpType where</td>
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<pre style="margin: 0;"> <span id="LC380" class="line" lang="haskell"> <span class="n" style="color: #333;">ppr</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Infer</span> <span class="n" style="color: #333;">ir</span><span class="p">)</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">ppr</span> <span class="n" style="color: #333;">ir</span></span>
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<pre style="margin: 0;"> <span id="LC381" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC382" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">instance</span> <span class="kt" style="color: #458; font-weight: 600;">Outputable</span> <span class="kt" style="color: #458; font-weight: 600;">InferResult</span> <span class="kr" style="font-weight: 600;">where</span></span>
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<pre style="margin: 0;">-<span id="LC390" class="line" lang="haskell"> <span class="n" style="color: #333;">ppr</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">IR</span> <span class="p">{</span> <span class="n" style="color: #333;">ir_uniq</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">u</span><span class="p">,</span> <span class="n" style="color: #333;">ir_lvl</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">lvl</span></span>
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<pre style="margin: 0;">-<span id="LC391" class="line" lang="haskell"> <span class="p">,</span> <span class="n" style="color: #333;">ir_inst</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">inst</span> <span class="p">})</span></span>
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<pre style="margin: 0;">-<span id="LC392" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">text</span> <span class="s" style="color: #d14;">"Infer"</span> <span class="o" style="font-weight: 600;"><></span> <span class="n" style="color: #333;">braces</span> <span class="p">(</span><span class="n" style="color: #333;">ppr</span> <span class="n" style="color: #333;">u</span> <span class="o" style="font-weight: 600;"><></span> <span class="n" style="color: #333;">comma</span> <span class="o" style="font-weight: 600;"><></span> <span class="n" style="color: #333;">ppr</span> <span class="n" style="color: #333;">lvl</span> <span class="o" style="font-weight: 600;"><+></span> <span class="n" style="color: #333;">ppr</span> <span class="n" style="color: #333;">inst</span><span class="p">)</span></span>
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<pre style="margin: 0;">+<span id="LC383" class="line" lang="haskell"> <span class="n" style="color: #333;">ppr</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">IR</span> <span class="p">{</span> <span class="n" style="color: #333;">ir_uniq</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">u</span><span class="p">,</span> <span class="n" style="color: #333;">ir_lvl</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">lvl</span> <span class="p">})</span></span>
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<pre style="margin: 0;">+<span id="LC384" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">text</span> <span class="s" style="color: #d14;">"Infer"</span> <span class="o" style="font-weight: 600;"><></span> <span class="n" style="color: #333;">braces</span> <span class="p">(</span><span class="n" style="color: #333;">ppr</span> <span class="n" style="color: #333;">u</span> <span class="o" style="font-weight: 600;"><></span> <span class="n" style="color: #333;">comma</span> <span class="o" style="font-weight: 600;"><></span> <span class="n" style="color: #333;">ppr</span> <span class="n" style="color: #333;">lvl</span><span class="p">)</span></span>
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385
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<pre style="margin: 0;"> <span id="LC385" class="line" lang="haskell"></span>
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394
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386
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<pre style="margin: 0;"> <span id="LC386" class="line" lang="haskell"><span class="cd">-- | Make an 'ExpType' suitable for checking.</span></span>
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395
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387
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<pre style="margin: 0;"> <span id="LC387" class="line" lang="haskell"><span class="n" style="color: #333;">mkCheckExpType</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">TcType</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">ExpType</span></span>
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<li id="74295edeac870ee7f2f3484ebaffab5c948b735a">
<a href="https://gitlab.haskell.org/ghc/ghc/-/commit/f39a0d86de843c105dc9cd4e0bd631176300d7f7#74295edeac870ee7f2f3484ebaffab5c948b735a"><strong>compiler/GHC/Tc/Utils/Unify.hs</strong></a>
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<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -26,7 +26,7 @@ module GHC.Tc.Utils.Unify (</td>
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26
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<pre style="margin: 0;"> <span id="LC26" class="line" lang="haskell"></span>
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27
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<pre style="margin: 0;"> <span id="LC27" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">--------------------------------</span></span>
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28
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<pre style="margin: 0;"> <span id="LC28" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- Holes</span></span>
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29
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<pre style="margin: 0;">-<span id="LC29" class="line" lang="haskell"> <span class="nf" style="color: #900; font-weight: 600;">tcInfer<span class="idiff left">Inst</span></span><span class="p"><span class="idiff">,</span></span><span class="idiff"> </span><span class="nf" style="color: #900; font-weight: 600;"><span class="idiff right">tcInferNoInst</span></span><span class="p">,</span></span>
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<pre style="margin: 0;">+<span id="LC29" class="line" lang="haskell"> <span class="nf" style="color: #900; font-weight: 600;">tcInfer</span><span class="p">,</span></span>
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<pre style="margin: 0;"> <span id="LC30" class="line" lang="haskell"> <span class="nf" style="color: #900; font-weight: 600;">matchExpectedListTy</span><span class="p">,</span></span>
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<pre style="margin: 0;"> <span id="LC31" class="line" lang="haskell"> <span class="nf" style="color: #900; font-weight: 600;">matchExpectedTyConApp</span><span class="p">,</span></span>
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<pre style="margin: 0;"> <span id="LC32" class="line" lang="haskell"> <span class="nf" style="color: #900; font-weight: 600;">matchExpectedAppTy</span><span class="p">,</span></span>
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<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -199,8 +199,8 @@ matchExpectedFunTys herald arity orig_ty thing_inside</td>
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199
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199
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<pre style="margin: 0;"> <span id="LC199" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">------------</span></span>
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200
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200
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<pre style="margin: 0;"> <span id="LC200" class="line" lang="haskell"> <span class="n" style="color: #333;">defer</span> <span class="o" style="font-weight: 600;">::</span> <span class="p">[</span><span class="kt" style="color: #458; font-weight: 600;">ExpSigmaType</span><span class="p">]</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Arity</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">ExpRhoType</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TcM</span> <span class="p">(</span><span class="n" style="color: #333;">a</span><span class="p">,</span> <span class="kt" style="color: #458; font-weight: 600;">HsWrapper</span><span class="p">)</span></span>
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201
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201
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<pre style="margin: 0;"> <span id="LC201" class="line" lang="haskell"> <span class="n" style="color: #333;">defer</span> <span class="n" style="color: #333;">acc_arg_tys</span> <span class="n" style="color: #333;">n</span> <span class="n" style="color: #333;">fun_ty</span></span>
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202
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<pre style="margin: 0;">-<span id="LC202" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">do</span> <span class="p">{</span> <span class="n" style="color: #333;">more_arg_tys</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">replicateM</span> <span class="n" style="color: #333;">n</span> <span class="n" style="color: #333;">newInferExpType<span class="idiff left right">NoInst</span></span></span>
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<pre style="margin: 0;">-<span id="LC203" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">res_ty</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">newInferExpType<span class="idiff left right">Inst</span></span></span>
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<pre style="margin: 0;">+<span id="LC202" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">do</span> <span class="p">{</span> <span class="n" style="color: #333;">more_arg_tys</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">replicateM</span> <span class="n" style="color: #333;">n</span> <span class="n" style="color: #333;">newInferExpType</span></span>
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<pre style="margin: 0;">+<span id="LC203" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">res_ty</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">newInferExpType</span></span>
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<pre style="margin: 0;"> <span id="LC204" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">result</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">thing_inside</span> <span class="p">(</span><span class="n" style="color: #333;">reverse</span> <span class="n" style="color: #333;">acc_arg_tys</span> <span class="o" style="font-weight: 600;">++</span> <span class="n" style="color: #333;">more_arg_tys</span><span class="p">)</span> <span class="n" style="color: #333;">res_ty</span></span>
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<pre style="margin: 0;"> <span id="LC205" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">more_arg_tys</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">mapM</span> <span class="n" style="color: #333;">readExpType</span> <span class="n" style="color: #333;">more_arg_tys</span></span>
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<pre style="margin: 0;"> <span id="LC206" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">res_ty</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">readExpType</span> <span class="n" style="color: #333;">res_ty</span></span>
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<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -231,22 +231,24 @@ matchActualFunTys :: SDoc -- See Note [Herald for matchExpectedFunTys]</td>
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<pre style="margin: 0;"> <span id="LC231" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TcM</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">HsWrapper</span><span class="p">,</span> <span class="p">[</span><span class="kt" style="color: #458; font-weight: 600;">TcSigmaType</span><span class="p">],</span> <span class="kt" style="color: #458; font-weight: 600;">TcSigmaType</span><span class="p">)</span></span>
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<pre style="margin: 0;"> <span id="LC232" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- If matchActualFunTys n ty = (wrap, [t1,..,tn], ty_r)</span></span>
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<pre style="margin: 0;"> <span id="LC233" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- then wrap : ty ~> (t1 -> ... -> tn -> ty_r)</span></span>
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<pre style="margin: 0;">-<span id="LC234" class="line" lang="haskell"><span class="n" style="color: #333;">matchActualFunTys</span> <span class="n" style="color: #333;">herald</span> <span class="n" style="color: #333;">ct_orig</span> <span class="n" style="color: #333;">mb_thing</span> <span class="n" style="color: #333;">arity</span> <span class="n" style="color: #333;">ty</span></span>
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<pre style="margin: 0;">-<span id="LC235" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">matchActualFunTysPart</span> <span class="n" style="color: #333;">herald</span> <span class="n" style="color: #333;">ct_orig</span> <span class="n" style="color: #333;">mb_thing</span> <span class="n" style="color: #333;">arity</span> <span class="n" style="color: #333;">ty</span> <span class="kt" style="color: #458; font-weight: 600;">[]</span> <span class="n" style="color: #333;">arity</span></span>
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<pre style="margin: 0;">+<span id="LC234" class="line" lang="haskell"><span class="n" style="color: #333;">matchActualFunTys</span> <span class="n" style="color: #333;">herald</span> <span class="n" style="color: #333;">ct_orig</span> <span class="n" style="color: #333;">mb_thing</span> <span class="n" style="color: #333;">n_val_args_wanted</span> <span class="n" style="color: #333;">fun_ty</span></span>
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<pre style="margin: 0;">+<span id="LC235" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">matchActualFunTysPart</span> <span class="n" style="color: #333;">herald</span> <span class="n" style="color: #333;">ct_orig</span> <span class="n" style="color: #333;">mb_thing</span> <span class="n" style="color: #333;">fun_ty</span> <span class="n" style="color: #333;">n_val_args_wanted</span></span>
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<pre style="margin: 0;">+<span id="LC236" class="line" lang="haskell"> <span class="n" style="color: #333;">n_val_args_wanted</span> <span class="n" style="color: #333;">fun_ty</span></span>
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<pre style="margin: 0;"> <span id="LC237" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC238" class="line" lang="haskell"><span class="cd">-- | Variant of 'matchActualFunTys' that works when supplied only part</span></span>
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<pre style="margin: 0;"> <span id="LC239" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- (that is, to the right of some arrows) of the full function type</span></span>
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<pre style="margin: 0;"> <span id="LC240" class="line" lang="haskell"><span class="n" style="color: #333;">matchActualFunTysPart</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">SDoc</span> <span class="c1" style="color: #998; font-style: italic;">-- See Note [Herald for matchExpectedFunTys]</span></span>
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<pre style="margin: 0;"> <span id="LC241" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">CtOrigin</span></span>
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<pre style="margin: 0;"> <span id="LC242" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Maybe</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">HsExpr</span> <span class="kt" style="color: #458; font-weight: 600;">GhcRn</span><span class="p">)</span> <span class="c1" style="color: #998; font-style: italic;">-- the thing with type TcSigmaType</span></span>
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<pre style="margin: 0;">-<span id="LC242" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;"><span class="idiff left right">Arity</span></span></span>
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<pre style="margin: 0;">-<span id="LC243" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;"><span class="idiff left right">TcSigmaType</span></span></span>
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<pre style="margin: 0;">-<span id="LC244" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">-></span> <span class="p"><span class="idiff left">[</span></span><span class="kt" style="color: #458; font-weight: 600;"><span class="idiff">TcSigmaType</span></span><span class="p"><span class="idiff">]</span></span><span class="idiff"> </span><span class="c1" style="color: #998; font-style: italic;"><span class="idiff right">-- reversed args. See (*) below.</span></span></span>
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<pre style="margin: 0;">-<span id="LC245" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;"><span class="idiff left">Arity</span></span><span class="idiff"> </span><span class="c1" style="color: #998; font-style: italic;"><span class="idiff right">-- overall arity of the function, for errs</span></span></span>
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<pre style="margin: 0;">+<span id="LC243" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;"><span class="idiff left">TcSigmaType</span></span><span class="idiff"> </span><span class="c1" style="color: #998; font-style: italic;"><span class="idiff right">-- Original function type</span></span></span>
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<pre style="margin: 0;">+<span id="LC244" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;"><span class="idiff left">Arity</span></span><span class="idiff"> </span><span class="c1" style="color: #998; font-style: italic;"><span class="idiff right">-- And number of args to which it is applied</span></span></span>
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<pre style="margin: 0;">+<span id="LC245" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;"><span class="idiff left">Arity</span></span><span class="idiff"> </span><span class="c1" style="color: #998; font-style: italic;"><span class="idiff right">-- Number of new value args wanted</span></span></span>
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<pre style="margin: 0;">+<span id="LC246" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;"><span class="idiff left">TcSigmaType</span></span><span class="idiff"> </span><span class="c1" style="color: #998; font-style: italic;"><span class="idiff right">-- Type to analyse</span></span></span>
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<pre style="margin: 0;"> <span id="LC247" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TcM</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">HsWrapper</span><span class="p">,</span> <span class="p">[</span><span class="kt" style="color: #458; font-weight: 600;">TcSigmaType</span><span class="p">],</span> <span class="kt" style="color: #458; font-weight: 600;">TcSigmaType</span><span class="p">)</span></span>
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<pre style="margin: 0;">-<span id="LC247" class="line" lang="haskell"><span class="n" style="color: #333;">matchActualFunTysPart</span> <span class="n" style="color: #333;">herald</span> <span class="n" style="color: #333;">ct_orig</span> <span class="n" style="color: #333;">mb_thing</span> <span class="n" style="color: #333;">arity</span> <span class="n" style="color: #333;">orig_ty</span></span>
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<pre style="margin: 0;">-<span id="LC248" class="line" lang="haskell"> <span class="n" style="color: #333;">orig_old_args</span> <span class="n" style="color: #333;">full_arity</span></span>
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<pre style="margin: 0;">-<span id="LC249" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">go</span> <span class="n" style="color: #333;">arity</span> <span class="n" style="color: #333;">orig_old_args</span> <span class="n" style="color: #333;">orig_ty</span></span>
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<pre style="margin: 0;">+<span id="LC248" class="line" lang="haskell"><span class="n" style="color: #333;">matchActualFunTysPart</span> <span class="n" style="color: #333;">herald</span> <span class="n" style="color: #333;">ct_orig</span> <span class="n" style="color: #333;">mb_thing</span></span>
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<pre style="margin: 0;">+<span id="LC249" class="line" lang="haskell"> <span class="n" style="color: #333;">orig_fun_ty</span> <span class="n" style="color: #333;">n_val_args_in_call</span></span>
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<pre style="margin: 0;">+<span id="LC250" class="line" lang="haskell"> <span class="n" style="color: #333;">n_val_args_wanted</span> <span class="n" style="color: #333;">fun_ty</span></span>
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<pre style="margin: 0;">+<span id="LC251" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">go</span> <span class="n" style="color: #333;">n_val_args_wanted</span> <span class="n" style="color: #333;">fun_ty</span></span>
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<pre style="margin: 0;"> <span id="LC252" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- Does not allocate unnecessary meta variables: if the input already is</span></span>
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<pre style="margin: 0;"> <span id="LC253" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- a function, we just take it apart. Not only is this efficient,</span></span>
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<pre style="margin: 0;"> <span id="LC254" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- it's important for higher rank: the argument might be of form</span></span>
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<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -274,36 +276,35 @@ matchActualFunTysPart herald ct_orig mb_thing arity orig_ty</td>
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<pre style="margin: 0;"> <span id="LC276" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">--</span></span>
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<pre style="margin: 0;"> <span id="LC277" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- Refactoring is welcome.</span></span>
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<pre style="margin: 0;"> <span id="LC278" class="line" lang="haskell"> <span class="n" style="color: #333;">go</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">Arity</span></span>
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<pre style="margin: 0;">-<span id="LC277" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">-></span> <span class="p">[</span><span class="kt" style="color: #458; font-weight: 600;">TcSigmaType</span><span class="p">]</span> <span class="c1" style="color: #998; font-style: italic;">-- accumulator of arguments (reversed)</span></span>
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<pre style="margin: 0;"> <span id="LC279" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TcSigmaType</span> <span class="c1" style="color: #998; font-style: italic;">-- the remainder of the type as we're processing</span></span>
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<pre style="margin: 0;"> <span id="LC280" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TcM</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">HsWrapper</span><span class="p">,</span> <span class="p">[</span><span class="kt" style="color: #458; font-weight: 600;">TcSigmaType</span><span class="p">],</span> <span class="kt" style="color: #458; font-weight: 600;">TcSigmaType</span><span class="p">)</span></span>
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<pre style="margin: 0;">-<span id="LC280" class="line" lang="haskell"> <span class="n" style="color: #333;">go</span> <span class="mi" style="color: #099;">0</span> <span class="kr" style="font-weight: 600;"><span class="idiff left">_</span></span><span class="idiff right"> </span><span class="n" style="color: #333;">ty</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">return</span> <span class="p">(</span><span class="n" style="color: #333;">idHsWrapper</span><span class="p">,</span> <span class="kt" style="color: #458; font-weight: 600;">[]</span><span class="p">,</span> <span class="n" style="color: #333;">ty</span><span class="p">)</span></span>
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<pre style="margin: 0;">+<span id="LC281" class="line" lang="haskell"> <span class="n" style="color: #333;">go</span> <span class="mi" style="color: #099;">0</span> <span class="n" style="color: #333;">ty</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">return</span> <span class="p">(</span><span class="n" style="color: #333;">idHsWrapper</span><span class="p">,</span> <span class="kt" style="color: #458; font-weight: 600;">[]</span><span class="p">,</span> <span class="n" style="color: #333;">ty</span><span class="p">)</span></span>
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282
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<pre style="margin: 0;"> <span id="LC282" class="line" lang="haskell"></span>
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<pre style="margin: 0;">-<span id="LC282" class="line" lang="haskell"> <span class="n" style="color: #333;">go</span> <span class="n" style="color: #333;">n</span> <span class="n" style="color: #333;"><span class="idiff left">acc_args</span></span><span class="idiff right"> </span><span class="n" style="color: #333;">ty</span></span>
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283
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<pre style="margin: 0;">+<span id="LC283" class="line" lang="haskell"> <span class="n" style="color: #333;">go</span> <span class="n" style="color: #333;">n</span> <span class="n" style="color: #333;">ty</span></span>
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283
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<pre style="margin: 0;"> <span id="LC284" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">|</span> <span class="n" style="color: #333;">not</span> <span class="p">(</span><span class="n" style="color: #333;">null</span> <span class="n" style="color: #333;">tvs</span> <span class="o" style="font-weight: 600;">&&</span> <span class="n" style="color: #333;">null</span> <span class="n" style="color: #333;">theta</span><span class="p">)</span></span>
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284
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285
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<pre style="margin: 0;"> <span id="LC285" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">do</span> <span class="p">{</span> <span class="p">(</span><span class="n" style="color: #333;">wrap1</span><span class="p">,</span> <span class="n" style="color: #333;">rho</span><span class="p">)</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">topInstantiate</span> <span class="n" style="color: #333;">ct_orig</span> <span class="n" style="color: #333;">ty</span></span>
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285
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<pre style="margin: 0;">-<span id="LC285" class="line" lang="haskell"> <span class="p">;</span> <span class="p">(</span><span class="n" style="color: #333;">wrap2</span><span class="p">,</span> <span class="n" style="color: #333;">arg_tys</span><span class="p">,</span> <span class="n" style="color: #333;">res_ty</span><span class="p">)</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">go</span> <span class="n" style="color: #333;">n</span> <span class="n" style="color: #333;"><span class="idiff left">acc_args</span></span><span class="idiff right"> </span><span class="n" style="color: #333;">rho</span></span>
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<pre style="margin: 0;">+<span id="LC286" class="line" lang="haskell"> <span class="p">;</span> <span class="p">(</span><span class="n" style="color: #333;">wrap2</span><span class="p">,</span> <span class="n" style="color: #333;">arg_tys</span><span class="p">,</span> <span class="n" style="color: #333;">res_ty</span><span class="p">)</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">go</span> <span class="n" style="color: #333;">n</span> <span class="n" style="color: #333;">rho</span></span>
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<pre style="margin: 0;"> <span id="LC287" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">return</span> <span class="p">(</span><span class="n" style="color: #333;">wrap2</span> <span class="o" style="font-weight: 600;"><.></span> <span class="n" style="color: #333;">wrap1</span><span class="p">,</span> <span class="n" style="color: #333;">arg_tys</span><span class="p">,</span> <span class="n" style="color: #333;">res_ty</span><span class="p">)</span> <span class="p">}</span></span>
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<pre style="margin: 0;"> <span id="LC288" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">where</span></span>
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<pre style="margin: 0;"> <span id="LC289" class="line" lang="haskell"> <span class="p">(</span><span class="n" style="color: #333;">tvs</span><span class="p">,</span> <span class="n" style="color: #333;">theta</span><span class="p">,</span> <span class="kr" style="font-weight: 600;">_</span><span class="p">)</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">tcSplitSigmaTy</span> <span class="n" style="color: #333;">ty</span></span>
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289
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290
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<pre style="margin: 0;"> <span id="LC290" class="line" lang="haskell"></span>
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<pre style="margin: 0;">-<span id="LC290" class="line" lang="haskell"> <span class="n" style="color: #333;">go</span> <span class="n" style="color: #333;">n</span> <span class="n" style="color: #333;"><span class="idiff left">acc_args</span></span><span class="idiff right"> </span><span class="n" style="color: #333;">ty</span></span>
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<pre style="margin: 0;">-<span id="LC291" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">|</span> <span class="kt" style="color: #458; font-weight: 600;">Just</span> <span class="n" style="color: #333;">ty'</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">tcView</span> <span class="n" style="color: #333;">ty</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">go</span> <span class="n" style="color: #333;">n</span> <span class="n" style="color: #333;"><span class="idiff left">acc_args</span></span><span class="idiff right"> </span><span class="n" style="color: #333;">ty'</span></span>
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<pre style="margin: 0;">+<span id="LC291" class="line" lang="haskell"> <span class="n" style="color: #333;">go</span> <span class="n" style="color: #333;">n</span> <span class="n" style="color: #333;">ty</span></span>
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<pre style="margin: 0;">+<span id="LC292" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">|</span> <span class="kt" style="color: #458; font-weight: 600;">Just</span> <span class="n" style="color: #333;">ty'</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">tcView</span> <span class="n" style="color: #333;">ty</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">go</span> <span class="n" style="color: #333;">n</span> <span class="n" style="color: #333;">ty'</span></span>
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<pre style="margin: 0;"> <span id="LC293" class="line" lang="haskell"></span>
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<pre style="margin: 0;">-<span id="LC293" class="line" lang="haskell"> <span class="n" style="color: #333;">go</span> <span class="n" style="color: #333;">n</span> <span class="n" style="color: #333;"><span class="idiff left">acc_args</span></span><span class="idiff right"> </span><span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">FunTy</span> <span class="p">{</span> <span class="n" style="color: #333;">ft_af</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">af</span><span class="p">,</span> <span class="n" style="color: #333;">ft_arg</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">arg_ty</span><span class="p">,</span> <span class="n" style="color: #333;">ft_res</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">res_ty</span> <span class="p">})</span></span>
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<pre style="margin: 0;">+<span id="LC294" class="line" lang="haskell"> <span class="n" style="color: #333;">go</span> <span class="n" style="color: #333;">n</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">FunTy</span> <span class="p">{</span> <span class="n" style="color: #333;">ft_af</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">af</span><span class="p">,</span> <span class="n" style="color: #333;">ft_arg</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">arg_ty</span><span class="p">,</span> <span class="n" style="color: #333;">ft_res</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">res_ty</span> <span class="p">})</span></span>
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<pre style="margin: 0;"> <span id="LC295" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">ASSERT</span><span class="p">(</span> <span class="n" style="color: #333;">af</span> <span class="o" style="font-weight: 600;">==</span> <span class="kt" style="color: #458; font-weight: 600;">VisArg</span> <span class="p">)</span></span>
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<pre style="margin: 0;">-<span id="LC295" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">do</span> <span class="p">{</span> <span class="p">(</span><span class="n" style="color: #333;">wrap_res</span><span class="p">,</span> <span class="n" style="color: #333;">tys</span><span class="p">,</span> <span class="n" style="color: #333;">ty_r</span><span class="p">)</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">go</span> <span class="p">(</span><span class="n" style="color: #333;">n</span><span class="o" style="font-weight: 600;">-</span><span class="mi" style="color: #099;">1</span><span class="p">)</span> <span class="p"><span class="idiff left">(</span></span><span class="n" style="color: #333;"><span class="idiff">arg_ty</span></span><span class="idiff"> </span><span class="o" style="font-weight: 600;"><span class="idiff">:</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">acc_args</span></span><span class="p"><span class="idiff">)</span></span><span class="idiff right"> </span><span class="n" style="color: #333;">res_ty</span></span>
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296
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<pre style="margin: 0;">+<span id="LC296" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">do</span> <span class="p">{</span> <span class="p">(</span><span class="n" style="color: #333;">wrap_res</span><span class="p">,</span> <span class="n" style="color: #333;">tys</span><span class="p">,</span> <span class="n" style="color: #333;">ty_r</span><span class="p">)</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">go</span> <span class="p">(</span><span class="n" style="color: #333;">n</span><span class="o" style="font-weight: 600;">-</span><span class="mi" style="color: #099;">1</span><span class="p">)</span> <span class="n" style="color: #333;">res_ty</span></span>
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296
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297
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<pre style="margin: 0;"> <span id="LC297" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">return</span> <span class="p">(</span> <span class="n" style="color: #333;">mkWpFun</span> <span class="n" style="color: #333;">idHsWrapper</span> <span class="n" style="color: #333;">wrap_res</span> <span class="n" style="color: #333;">arg_ty</span> <span class="n" style="color: #333;">ty_r</span> <span class="n" style="color: #333;">doc</span></span>
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297
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298
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<pre style="margin: 0;"> <span id="LC298" class="line" lang="haskell"> <span class="p">,</span> <span class="n" style="color: #333;">arg_ty</span> <span class="o" style="font-weight: 600;">:</span> <span class="n" style="color: #333;">tys</span><span class="p">,</span> <span class="n" style="color: #333;">ty_r</span> <span class="p">)</span> <span class="p">}</span></span>
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298
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299
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<pre style="margin: 0;"> <span id="LC299" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">where</span></span>
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299
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<pre style="margin: 0;"> <span id="LC300" class="line" lang="haskell"> <span class="n" style="color: #333;">doc</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">text</span> <span class="s" style="color: #d14;">"When inferring the argument type of a function with type"</span> <span class="o" style="font-weight: 600;"><+></span></span>
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300
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<pre style="margin: 0;">-<span id="LC300" class="line" lang="haskell"> <span class="n" style="color: #333;">quotes</span> <span class="p">(</span><span class="n" style="color: #333;">ppr</span> <span class="n" style="color: #333;">orig_ty</span><span class="p">)</span></span>
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<pre style="margin: 0;">+<span id="LC301" class="line" lang="haskell"> <span class="n" style="color: #333;">quotes</span> <span class="p">(</span><span class="n" style="color: #333;">ppr</span> <span class="n" style="color: #333;">orig_<span class="idiff left right">fun_</span>ty</span><span class="p">)</span></span>
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301
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302
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<pre style="margin: 0;"> <span id="LC302" class="line" lang="haskell"></span>
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302
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<pre style="margin: 0;">-<span id="LC302" class="line" lang="haskell"> <span class="n" style="color: #333;">go</span> <span class="n" style="color: #333;">n</span> <span class="n" style="color: #333;"><span class="idiff left">acc_args</span></span><span class="idiff right"> </span><span class="n" style="color: #333;">ty</span><span class="o" style="font-weight: 600;">@</span><span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">TyVarTy</span> <span class="n" style="color: #333;">tv</span><span class="p">)</span></span>
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<pre style="margin: 0;">+<span id="LC303" class="line" lang="haskell"> <span class="n" style="color: #333;">go</span> <span class="n" style="color: #333;">n</span> <span class="n" style="color: #333;">ty</span><span class="o" style="font-weight: 600;">@</span><span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">TyVarTy</span> <span class="n" style="color: #333;">tv</span><span class="p">)</span></span>
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303
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304
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<pre style="margin: 0;"> <span id="LC304" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">|</span> <span class="n" style="color: #333;">isMetaTyVar</span> <span class="n" style="color: #333;">tv</span></span>
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304
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305
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<pre style="margin: 0;"> <span id="LC305" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">do</span> <span class="p">{</span> <span class="n" style="color: #333;">cts</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">readMetaTyVar</span> <span class="n" style="color: #333;">tv</span></span>
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305
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306
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<pre style="margin: 0;"> <span id="LC306" class="line" lang="haskell"> <span class="p">;</span> <span class="kr" style="font-weight: 600;">case</span> <span class="n" style="color: #333;">cts</span> <span class="kr" style="font-weight: 600;">of</span></span>
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306
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<pre style="margin: 0;">-<span id="LC306" class="line" lang="haskell"> <span class="kt" style="color: #458; font-weight: 600;">Indirect</span> <span class="n" style="color: #333;">ty'</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">go</span> <span class="n" style="color: #333;">n</span> <span class="n" style="color: #333;"><span class="idiff left">acc_args</span></span><span class="idiff right"> </span><span class="n" style="color: #333;">ty'</span></span>
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307
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<pre style="margin: 0;">+<span id="LC307" class="line" lang="haskell"> <span class="kt" style="color: #458; font-weight: 600;">Indirect</span> <span class="n" style="color: #333;">ty'</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">go</span> <span class="n" style="color: #333;">n</span> <span class="n" style="color: #333;">ty'</span></span>
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<pre style="margin: 0;"> <span id="LC308" class="line" lang="haskell"> <span class="kt" style="color: #458; font-weight: 600;">Flexi</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">defer</span> <span class="n" style="color: #333;">n</span> <span class="n" style="color: #333;">ty</span> <span class="p">}</span></span>
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309
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<pre style="margin: 0;"> <span id="LC309" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC310" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- In all other cases we bale out into ordinary unification</span></span>
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<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -321,8 +322,7 @@ matchActualFunTysPart herald ct_orig mb_thing arity orig_ty</td>
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321
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322
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<pre style="margin: 0;"> <span id="LC322" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">--</span></span>
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323
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<pre style="margin: 0;"> <span id="LC323" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- But in that case we add specialized type into error context</span></span>
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324
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<pre style="margin: 0;"> <span id="LC324" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- anyway, because it may be useful. See also #9605.</span></span>
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<pre style="margin: 0;">-<span id="LC324" class="line" lang="haskell"> <span class="n" style="color: #333;">go</span> <span class="n" style="color: #333;">n</span> <span class="n" style="color: #333;">acc_args</span> <span class="n" style="color: #333;">ty</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">addErrCtxtM</span> <span class="p">(</span><span class="n" style="color: #333;">mk_ctxt</span> <span class="p">(</span><span class="n" style="color: #333;">reverse</span> <span class="n" style="color: #333;">acc_args</span><span class="p">)</span> <span class="n" style="color: #333;">ty</span><span class="p">)</span> <span class="o" style="font-weight: 600;">$</span></span>
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<pre style="margin: 0;">-<span id="LC325" class="line" lang="haskell"> <span class="n" style="color: #333;">defer</span> <span class="n" style="color: #333;">n</span> <span class="n" style="color: #333;">ty</span></span>
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<pre style="margin: 0;">+<span id="LC325" class="line" lang="haskell"> <span class="n" style="color: #333;">go</span> <span class="n" style="color: #333;">n</span> <span class="n" style="color: #333;">ty</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">addErrCtxtM</span> <span class="n" style="color: #333;">mk_ctxt</span> <span class="p">(</span><span class="n" style="color: #333;">defer</span> <span class="n" style="color: #333;">n</span> <span class="n" style="color: #333;">ty</span><span class="p">)</span></span>
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<pre style="margin: 0;"> <span id="LC326" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC327" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">------------</span></span>
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<pre style="margin: 0;"> <span id="LC328" class="line" lang="haskell"> <span class="n" style="color: #333;">defer</span> <span class="n" style="color: #333;">n</span> <span class="n" style="color: #333;">fun_ty</span></span>
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<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -333,16 +333,16 @@ matchActualFunTysPart herald ct_orig mb_thing arity orig_ty</td>
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<pre style="margin: 0;"> <span id="LC333" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">return</span> <span class="p">(</span><span class="n" style="color: #333;">mkWpCastN</span> <span class="n" style="color: #333;">co</span><span class="p">,</span> <span class="n" style="color: #333;">arg_tys</span><span class="p">,</span> <span class="n" style="color: #333;">res_ty</span><span class="p">)</span> <span class="p">}</span></span>
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<pre style="margin: 0;"> <span id="LC334" class="line" lang="haskell"></span>
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335
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<pre style="margin: 0;"> <span id="LC335" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">------------</span></span>
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<pre style="margin: 0;">-<span id="LC336" class="line" lang="haskell"> <span class="n" style="color: #333;">mk_ctxt</span> <span class="o" style="font-weight: 600;">::</span> <span class="p">[</span><span class="kt" style="color: #458; font-weight: 600;">TcSigmaType</span><span class="p">]</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TcSigmaType</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TidyEnv</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TcM</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">TidyEnv</span><span class="p">,</span> <span class="kt" style="color: #458; font-weight: 600;">MsgDoc</span><span class="p">)</span></span>
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337
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<pre style="margin: 0;">-<span id="LC337" class="line" lang="haskell"> <span class="n" style="color: #333;">mk_ctxt</span> <span class="n" style="color: #333;">arg_tys</span> <span class="n" style="color: #333;">res_ty</span> <span class="n" style="color: #333;">env</span></span>
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338
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<pre style="margin: 0;">-<span id="LC338" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">do</span> <span class="p">{</span> <span class="kr" style="font-weight: 600;">let</span> <span class="n" style="color: #333;">ty</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">mkVisFunTys</span> <span class="n" style="color: #333;">arg_tys</span> <span class="n" style="color: #333;">res_ty</span></span>
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339
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<pre style="margin: 0;">-<span id="LC339" class="line" lang="haskell"> <span class="p">;</span> <span class="p">(</span><span class="n" style="color: #333;">env1</span><span class="p">,</span> <span class="n" style="color: #333;">zonked</span><span class="p">)</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">zonkTidyTcType</span> <span class="n" style="color: #333;">env</span> <span class="n" style="color: #333;">ty</span></span>
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340
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<pre style="margin: 0;">-<span id="LC340" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- zonking might change # of args</span></span>
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<pre style="margin: 0;">-<span id="LC341" class="line" lang="haskell"> <span class="p">;</span> <span class="kr" style="font-weight: 600;">let</span> <span class="p">(</span><span class="n" style="color: #333;">zonked_args</span><span class="p">,</span> <span class="kr" style="font-weight: 600;">_</span><span class="p">)</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">tcSplitFunTys</span> <span class="n" style="color: #333;">zonked</span></span>
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<pre style="margin: 0;">-<span id="LC342" class="line" lang="haskell"> <span class="n" style="color: #333;">n_actual</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">length</span> <span class="n" style="color: #333;">zonked_args</span></span>
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<pre style="margin: 0;">-<span id="LC343" class="line" lang="haskell"> <span class="p">(</span><span class="n" style="color: #333;">env2</span><span class="p">,</span> <span class="n" style="color: #333;">unzonked</span><span class="p">)</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">tidyOpenType</span> <span class="n" style="color: #333;">env1</span> <span class="n" style="color: #333;">ty</span></span>
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<pre style="margin: 0;">+<span id="LC336" class="line" lang="haskell"> <span class="n" style="color: #333;">mk_ctxt</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">TidyEnv</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TcM</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">TidyEnv</span><span class="p">,</span> <span class="kt" style="color: #458; font-weight: 600;">MsgDoc</span><span class="p">)</span></span>
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<pre style="margin: 0;">+<span id="LC337" class="line" lang="haskell"> <span class="n" style="color: #333;">mk_ctxt</span> <span class="n" style="color: #333;">env</span></span>
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<pre style="margin: 0;">+<span id="LC338" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">do</span> <span class="p">{</span> <span class="p">(</span><span class="n" style="color: #333;">env1</span><span class="p">,</span> <span class="n" style="color: #333;">zonked</span><span class="p">)</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">zonkTidyTcType</span> <span class="n" style="color: #333;">env</span> <span class="n" style="color: #333;">orig_fun_ty</span></span>
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<pre style="margin: 0;">+<span id="LC339" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- Zonking might change # of args</span></span>
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<pre style="margin: 0;">+<span id="LC340" class="line" lang="haskell"> <span class="p">;</span> <span class="kr" style="font-weight: 600;">let</span> <span class="p">(</span><span class="n" style="color: #333;">zonked_args</span><span class="p">,</span> <span class="kr" style="font-weight: 600;">_</span><span class="p">)</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">tcSplitPiTys</span> <span class="n" style="color: #333;">zonked</span></span>
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<pre style="margin: 0;">+<span id="LC341" class="line" lang="haskell"> <span class="n" style="color: #333;">n_val_args_in_type</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">count</span> <span class="n" style="color: #333;">isVisibleBinder</span> <span class="n" style="color: #333;">zonked_args</span></span>
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<pre style="margin: 0;">+<span id="LC342" class="line" lang="haskell"> <span class="p">(</span><span class="n" style="color: #333;">env2</span><span class="p">,</span> <span class="n" style="color: #333;">unzonked</span><span class="p">)</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">tidyOpenType</span> <span class="n" style="color: #333;">env1</span> <span class="n" style="color: #333;">orig_fun_ty</span></span>
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<pre style="margin: 0;"> <span id="LC343" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">return</span> <span class="p">(</span> <span class="n" style="color: #333;">env2</span></span>
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<pre style="margin: 0;">-<span id="LC345" class="line" lang="haskell"> <span class="p">,</span> <span class="n" style="color: #333;">mk_fun_tys_msg</span> <span class="n" style="color: #333;">unzonked</span> <span class="n" style="color: #333;">zonked</span> <span class="n" style="color: #333;">n_actual</span> <span class="n" style="color: #333;">full_arity</span> <span class="n" style="color: #333;">herald</span><span class="p">)</span> <span class="p">}</span></span>
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<pre style="margin: 0;">+<span id="LC344" class="line" lang="haskell"> <span class="p">,</span> <span class="n" style="color: #333;">mk_fun_tys_msg</span> <span class="n" style="color: #333;">unzonked</span> <span class="n" style="color: #333;">zonked</span> <span class="n" style="color: #333;">n_val_args_in_type</span></span>
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<pre style="margin: 0;">+<span id="LC345" class="line" lang="haskell"> <span class="n" style="color: #333;">n_val_args_in_call</span> <span class="n" style="color: #333;">herald</span><span class="p">)</span> <span class="p">}</span></span>
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<pre style="margin: 0;"> <span id="LC346" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC347" class="line" lang="haskell"><span class="n" style="color: #333;">mk_fun_tys_msg</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">TcType</span> <span class="c1" style="color: #998; font-style: italic;">-- the full type passed in (unzonked)</span></span>
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<pre style="margin: 0;"> <span id="LC348" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TcType</span> <span class="c1" style="color: #998; font-style: italic;">-- the full type passed in (zonked)</span></span>
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<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -350,15 +350,15 @@ mk_fun_tys_msg :: TcType -- the full type passed in (unzonked)</td>
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<pre style="margin: 0;"> <span id="LC350" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Arity</span> <span class="c1" style="color: #998; font-style: italic;">-- the # of args wanted</span></span>
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<pre style="margin: 0;"> <span id="LC351" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">SDoc</span> <span class="c1" style="color: #998; font-style: italic;">-- overall herald</span></span>
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<pre style="margin: 0;"> <span id="LC352" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">SDoc</span></span>
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<pre style="margin: 0;">-<span id="LC353" class="line" lang="haskell"><span class="n" style="color: #333;">mk_fun_tys_msg</span> <span class="n" style="color: #333;">full_ty</span> <span class="n" style="color: #333;">ty</span> <span class="n" style="color: #333;">n_args</span><span class="idiff left"> </span><span class="n" style="color: #333;"><span class="idiff right">full_arity</span></span> <span class="n" style="color: #333;">herald</span></span>
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<pre style="margin: 0;">-<span id="LC354" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">herald</span> <span class="o" style="font-weight: 600;"><+></span> <span class="n" style="color: #333;">speakNOf</span> <span class="n" style="color: #333;"><span class="idiff left right">full_arity</span></span> <span class="p">(</span><span class="n" style="color: #333;">text</span> <span class="s" style="color: #d14;">"argument"</span><span class="p">)</span> <span class="o" style="font-weight: 600;"><></span> <span class="n" style="color: #333;">comma</span> <span class="o" style="font-weight: 600;">$$</span></span>
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<pre style="margin: 0;">-<span id="LC355" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">if</span> <span class="n" style="color: #333;">n_args</span><span class="idiff left"> </span><span class="o" style="font-weight: 600;"><span class="idiff">==</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff right">full_arity</span></span></span>
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<pre style="margin: 0;">+<span id="LC353" class="line" lang="haskell"><span class="n" style="color: #333;">mk_fun_tys_msg</span> <span class="n" style="color: #333;">full_ty</span> <span class="n" style="color: #333;">ty</span> <span class="n" style="color: #333;">n_args<span class="idiff left">_in_type</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff right">n_args_in_call</span></span> <span class="n" style="color: #333;">herald</span></span>
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<pre style="margin: 0;">+<span id="LC354" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">herald</span> <span class="o" style="font-weight: 600;"><+></span> <span class="n" style="color: #333;">speakNOf</span> <span class="n" style="color: #333;"><span class="idiff left right">n_args_in_call</span></span> <span class="p">(</span><span class="n" style="color: #333;">text</span> <span class="s" style="color: #d14;">"argument"</span><span class="p">)</span> <span class="o" style="font-weight: 600;"><></span> <span class="n" style="color: #333;">comma</span> <span class="o" style="font-weight: 600;">$$</span></span>
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<pre style="margin: 0;">+<span id="LC355" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">if</span> <span class="n" style="color: #333;">n_args<span class="idiff left">_in_type</span></span><span class="idiff"> </span><span class="o" style="font-weight: 600;"><span class="idiff">==</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff right">n_args_in_call</span></span></span>
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<pre style="margin: 0;"> <span id="LC356" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">then</span> <span class="n" style="color: #333;">text</span> <span class="s" style="color: #d14;">"its type is"</span> <span class="o" style="font-weight: 600;"><+></span> <span class="n" style="color: #333;">quotes</span> <span class="p">(</span><span class="n" style="color: #333;">pprType</span> <span class="n" style="color: #333;">full_ty</span><span class="p">)</span> <span class="o" style="font-weight: 600;"><></span></span>
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<pre style="margin: 0;"> <span id="LC357" class="line" lang="haskell"> <span class="n" style="color: #333;">comma</span> <span class="o" style="font-weight: 600;">$$</span></span>
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<pre style="margin: 0;"> <span id="LC358" class="line" lang="haskell"> <span class="n" style="color: #333;">text</span> <span class="s" style="color: #d14;">"it is specialized to"</span> <span class="o" style="font-weight: 600;"><+></span> <span class="n" style="color: #333;">quotes</span> <span class="p">(</span><span class="n" style="color: #333;">pprType</span> <span class="n" style="color: #333;">ty</span><span class="p">)</span></span>
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<pre style="margin: 0;"> <span id="LC359" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">else</span> <span class="n" style="color: #333;">sep</span> <span class="p">[</span><span class="n" style="color: #333;">text</span> <span class="s" style="color: #d14;">"but its type"</span> <span class="o" style="font-weight: 600;"><+></span> <span class="n" style="color: #333;">quotes</span> <span class="p">(</span><span class="n" style="color: #333;">pprType</span> <span class="n" style="color: #333;">ty</span><span class="p">),</span></span>
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<pre style="margin: 0;">-<span id="LC360" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">if</span> <span class="n" style="color: #333;">n_args</span> <span class="o" style="font-weight: 600;">==</span> <span class="mi" style="color: #099;">0</span> <span class="kr" style="font-weight: 600;">then</span> <span class="n" style="color: #333;">text</span> <span class="s" style="color: #d14;">"has none"</span></span>
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<pre style="margin: 0;">-<span id="LC361" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">else</span> <span class="n" style="color: #333;">text</span> <span class="s" style="color: #d14;">"has only"</span> <span class="o" style="font-weight: 600;"><+></span> <span class="n" style="color: #333;">speakN</span> <span class="n" style="color: #333;">n_args</span><span class="p">]</span></span>
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<pre style="margin: 0;">+<span id="LC360" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">if</span> <span class="n" style="color: #333;">n_args<span class="idiff left right">_in_type</span></span> <span class="o" style="font-weight: 600;">==</span> <span class="mi" style="color: #099;">0</span> <span class="kr" style="font-weight: 600;">then</span> <span class="n" style="color: #333;">text</span> <span class="s" style="color: #d14;">"has none"</span></span>
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<pre style="margin: 0;">+<span id="LC361" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">else</span> <span class="n" style="color: #333;">text</span> <span class="s" style="color: #d14;">"has only"</span> <span class="o" style="font-weight: 600;"><+></span> <span class="n" style="color: #333;">speakN</span> <span class="n" style="color: #333;">n_args<span class="idiff left right">_in_type</span></span><span class="p">]</span></span>
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<pre style="margin: 0;"> <span id="LC362" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC363" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">----------------------</span></span>
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<pre style="margin: 0;"> <span id="LC364" class="line" lang="haskell"><span class="n" style="color: #333;">matchExpectedListTy</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">TcRhoType</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TcM</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">TcCoercionN</span><span class="p">,</span> <span class="kt" style="color: #458; font-weight: 600;">TcRhoType</span><span class="p">)</span></span>
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<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -564,8 +564,7 @@ tcSubTypeET orig ctxt (Check ty_actual) ty_expected</td>
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<pre style="margin: 0;"> <span id="LC564" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC565" class="line" lang="haskell"><span class="n" style="color: #333;">tcSubTypeET</span> <span class="kr" style="font-weight: 600;">_</span> <span class="kr" style="font-weight: 600;">_</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Infer</span> <span class="n" style="color: #333;">inf_res</span><span class="p">)</span> <span class="n" style="color: #333;">ty_expected</span></span>
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<pre style="margin: 0;"> <span id="LC566" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">do</span> <span class="p">{</span> <span class="n" style="color: #333;">co</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">fillInferResult</span> <span class="n" style="color: #333;">ty_expected</span> <span class="n" style="color: #333;">inf_res</span></span>
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<pre style="margin: 0;">-<span id="LC567" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- In patterns we ignore the ir_inst field</span></span>
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<pre style="margin: 0;">-<span id="LC568" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- and never instantatiate</span></span>
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<pre style="margin: 0;">+<span id="LC567" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- In patterns we do not instantatiate</span></span>
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<pre style="margin: 0;"> <span id="LC568" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC569" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">return</span> <span class="p">(</span><span class="n" style="color: #333;">mkWpCastN</span> <span class="p">(</span><span class="n" style="color: #333;">mkTcSymCo</span> <span class="n" style="color: #333;">co</span><span class="p">))</span> <span class="p">}</span></span>
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<pre style="margin: 0;"> <span id="LC570" class="line" lang="haskell"></span>
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<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -866,16 +865,9 @@ tcWrapResultO orig rn_expr expr actual_ty res_ty</td>
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<pre style="margin: 0;"> <span id="LC865" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC866" class="line" lang="haskell"><span class="cd">-- | Infer a type using a fresh ExpType</span></span>
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<pre style="margin: 0;"> <span id="LC867" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- See also Note [ExpType] in GHC.Tc.Utils.TcMType</span></span>
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<pre style="margin: 0;">-<span id="LC869" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- Does not attempt to instantiate the inferred type</span></span>
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<pre style="margin: 0;">-<span id="LC870" class="line" lang="haskell"><span class="n" style="color: #333;">tcInferNoInst</span> <span class="o" style="font-weight: 600;">::</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">ExpSigmaType</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TcM</span> <span class="n" style="color: #333;">a</span><span class="p">)</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TcM</span> <span class="p">(</span><span class="n" style="color: #333;">a</span><span class="p">,</span> <span class="kt" style="color: #458; font-weight: 600;">TcSigmaType</span><span class="p">)</span></span>
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<pre style="margin: 0;">-<span id="LC871" class="line" lang="haskell"><span class="n" style="color: #333;">tcInferNoInst</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">tcInfer</span> <span class="kt" style="color: #458; font-weight: 600;">False</span></span>
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<pre style="margin: 0;">-<span id="LC872" class="line" lang="haskell"></span>
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<pre style="margin: 0;">-<span id="LC873" class="line" lang="haskell"><span class="n" style="color: #333;">tcInferInst</span> <span class="o" style="font-weight: 600;">::</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">ExpRhoType</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TcM</span> <span class="n" style="color: #333;">a</span><span class="p">)</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TcM</span> <span class="p">(</span><span class="n" style="color: #333;">a</span><span class="p">,</span> <span class="kt" style="color: #458; font-weight: 600;">TcRhoType</span><span class="p">)</span></span>
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<pre style="margin: 0;">-<span id="LC874" class="line" lang="haskell"><span class="n" style="color: #333;">tcInferInst</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">tcInfer</span> <span class="kt" style="color: #458; font-weight: 600;">True</span></span>
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<pre style="margin: 0;">-<span id="LC875" class="line" lang="haskell"></span>
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<pre style="margin: 0;">-<span id="LC876" class="line" lang="haskell"><span class="n" style="color: #333;">tcInfer</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">Bool</span> <span class="o" style="font-weight: 600;">-></span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">ExpSigmaType</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TcM</span> <span class="n" style="color: #333;">a</span><span class="p">)</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TcM</span> <span class="p">(</span><span class="n" style="color: #333;">a</span><span class="p">,</span> <span class="kt" style="color: #458; font-weight: 600;">TcSigmaType</span><span class="p">)</span></span>
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<pre style="margin: 0;">-<span id="LC877" class="line" lang="haskell"><span class="n" style="color: #333;">tcInfer</span> <span class="n" style="color: #333;">instantiate</span> <span class="n" style="color: #333;">tc_check</span></span>
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<pre style="margin: 0;">-<span id="LC878" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">do</span> <span class="p">{</span> <span class="n" style="color: #333;">res_ty</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">newInferExpType</span> <span class="n" style="color: #333;">instantiate</span></span>
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<pre style="margin: 0;">+<span id="LC868" class="line" lang="haskell"><span class="n" style="color: #333;">tcInfer</span> <span class="o" style="font-weight: 600;">::</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">ExpSigmaType</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TcM</span> <span class="n" style="color: #333;">a</span><span class="p">)</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TcM</span> <span class="p">(</span><span class="n" style="color: #333;">a</span><span class="p">,</span> <span class="kt" style="color: #458; font-weight: 600;">TcSigmaType</span><span class="p">)</span></span>
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<pre style="margin: 0;">+<span id="LC869" class="line" lang="haskell"><span class="n" style="color: #333;">tcInfer</span> <span class="n" style="color: #333;">tc_check</span></span>
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<pre style="margin: 0;">+<span id="LC870" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">do</span> <span class="p">{</span> <span class="n" style="color: #333;">res_ty</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">newInferExpType</span></span>
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<pre style="margin: 0;"> <span id="LC871" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">result</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">tc_check</span> <span class="n" style="color: #333;">res_ty</span></span>
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<pre style="margin: 0;"> <span id="LC872" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">res_ty</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">readExpType</span> <span class="n" style="color: #333;">res_ty</span></span>
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<pre style="margin: 0;"> <span id="LC873" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">return</span> <span class="p">(</span><span class="n" style="color: #333;">result</span><span class="p">,</span> <span class="n" style="color: #333;">res_ty</span><span class="p">)</span> <span class="p">}</span></span>
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<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -884,16 +876,11 @@ instantiateAndFillInferResult :: CtOrigin -> TcType -> InferResult -> TcM HsWrap</td>
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<pre style="margin: 0;"> <span id="LC876" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- If wrap = instantiateAndFillInferResult t1 t2</span></span>
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<pre style="margin: 0;"> <span id="LC877" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- => wrap :: t1 ~> t2</span></span>
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<pre style="margin: 0;"> <span id="LC878" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- See Note [Deep instantiation of InferResult]</span></span>
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<pre style="margin: 0;">-<span id="LC887" class="line" lang="haskell"><span class="n" style="color: #333;">instantiateAndFillInferResult</span> <span class="n" style="color: #333;">orig</span> <span class="n" style="color: #333;">ty</span> <span class="n" style="color: #333;">inf_res</span><span class="o" style="font-weight: 600;">@</span><span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">IR</span> <span class="p">{</span> <span class="n" style="color: #333;">ir_inst</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">instantiate_me</span> <span class="p">})</span></span>
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<pre style="margin: 0;">-<span id="LC888" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">|</span> <span class="n" style="color: #333;">instantiate_me</span> <span class="c1" style="color: #998; font-style: italic;">-- This is *the* place where ir_inst is consulted</span></span>
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<pre style="margin: 0;">+<span id="LC879" class="line" lang="haskell"><span class="n" style="color: #333;">instantiateAndFillInferResult</span> <span class="n" style="color: #333;">orig</span> <span class="n" style="color: #333;">ty</span> <span class="n" style="color: #333;">inf_res</span></span>
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<pre style="margin: 0;"> <span id="LC880" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">do</span> <span class="p">{</span> <span class="p">(</span><span class="n" style="color: #333;">wrap</span><span class="p">,</span> <span class="n" style="color: #333;">rho</span><span class="p">)</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">deeplyInstantiate</span> <span class="n" style="color: #333;">orig</span> <span class="n" style="color: #333;">ty</span></span>
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<pre style="margin: 0;"> <span id="LC881" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">co</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">fillInferResult</span> <span class="n" style="color: #333;">rho</span> <span class="n" style="color: #333;">inf_res</span></span>
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<pre style="margin: 0;"> <span id="LC882" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">return</span> <span class="p">(</span><span class="n" style="color: #333;">mkWpCastN</span> <span class="n" style="color: #333;">co</span> <span class="o" style="font-weight: 600;"><.></span> <span class="n" style="color: #333;">wrap</span><span class="p">)</span> <span class="p">}</span></span>
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<pre style="margin: 0;"> <span id="LC883" class="line" lang="haskell"></span>
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<pre style="margin: 0;">-<span id="LC893" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">|</span> <span class="n" style="color: #333;">otherwise</span></span>
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<pre style="margin: 0;">-<span id="LC894" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">do</span> <span class="p">{</span> <span class="n" style="color: #333;">co</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">fillInferResult</span> <span class="n" style="color: #333;">ty</span> <span class="n" style="color: #333;">inf_res</span></span>
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<pre style="margin: 0;">-<span id="LC895" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">return</span> <span class="p">(</span><span class="n" style="color: #333;">mkWpCastN</span> <span class="n" style="color: #333;">co</span><span class="p">)</span> <span class="p">}</span></span>
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<pre style="margin: 0;">-<span id="LC896" class="line" lang="haskell"></span>
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884
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<pre style="margin: 0;"> <span id="LC884" class="line" lang="haskell"><span class="n" style="color: #333;">fillInferResult</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">TcType</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">InferResult</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TcM</span> <span class="kt" style="color: #458; font-weight: 600;">TcCoercionN</span></span>
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<pre style="margin: 0;"> <span id="LC885" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- If wrap = fillInferResult t1 t2</span></span>
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886
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<pre style="margin: 0;"> <span id="LC886" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- => wrap :: t1 ~> t2</span></span>
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<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -925,9 +912,8 @@ fillInferResult orig_ty (IR { ir_uniq = u, ir_lvl = res_lvl</td>
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<pre style="margin: 0;"> <span id="LC912" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC913" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">{- Note [Deep instantiation of InferResult]</span></span>
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914
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<pre style="margin: 0;"> <span id="LC914" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~</span></span>
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<pre style="margin: 0;">-<span id="LC928" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">In some cases we want to deeply instantiate before filling in</span></span>
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<pre style="margin: 0;">-<span id="LC929" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">an InferResult, and in some cases not. That's why InferReult</span></span>
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<pre style="margin: 0;">-<span id="LC930" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">has the ir_inst flag.</span></span>
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<pre style="margin: 0;">+<span id="LC915" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">We now alwayd deeply instantiate before filling in InferResult,</span></span>
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<pre style="margin: 0;">+<span id="LC916" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">and in some cases not: see #17775</span></span>
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<pre style="margin: 0;"> <span id="LC917" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC918" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">ir_inst = True: deeply instantiate</span></span>
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<pre style="margin: 0;"> <span id="LC919" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">----------------------------------</span></span>
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<a href="https://gitlab.haskell.org/ghc/ghc/-/commit/f39a0d86de843c105dc9cd4e0bd631176300d7f7#6a120b0673f8920127d8fffdaa16f01b90cc92d7"><strong>compiler/GHC/Tc/Utils/Zonk.hs</strong></a>
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<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -770,9 +770,10 @@ zonkExpr env (HsApp x e1 e2)</td>
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<pre style="margin: 0;"> <span id="LC770" class="line" lang="haskell"> <span class="n" style="color: #333;">new_e2</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">zonkLExpr</span> <span class="n" style="color: #333;">env</span> <span class="n" style="color: #333;">e2</span></span>
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<pre style="margin: 0;"> <span id="LC771" class="line" lang="haskell"> <span class="n" style="color: #333;">return</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">HsApp</span> <span class="n" style="color: #333;">x</span> <span class="n" style="color: #333;">new_e1</span> <span class="n" style="color: #333;">new_e2</span><span class="p">)</span></span>
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<pre style="margin: 0;"> <span id="LC772" class="line" lang="haskell"></span>
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<pre style="margin: 0;">-<span id="LC773" class="line" lang="haskell"><span class="n" style="color: #333;">zonkExpr</span> <span class="n" style="color: #333;">env</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">HsAppType</span> <span class="n" style="color: #333;"><span class="idiff left right">x</span></span> <span class="n" style="color: #333;">e</span> <span class="n" style="color: #333;">t</span><span class="p">)</span></span>
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<pre style="margin: 0;">+<span id="LC773" class="line" lang="haskell"><span class="n" style="color: #333;">zonkExpr</span> <span class="n" style="color: #333;">env</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">HsAppType</span> <span class="n" style="color: #333;"><span class="idiff left right">ty</span></span> <span class="n" style="color: #333;">e</span> <span class="n" style="color: #333;">t</span><span class="p">)</span></span>
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<pre style="margin: 0;"> <span id="LC774" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">do</span> <span class="n" style="color: #333;">new_e</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">zonkLExpr</span> <span class="n" style="color: #333;">env</span> <span class="n" style="color: #333;">e</span></span>
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<pre style="margin: 0;">-<span id="LC775" class="line" lang="haskell"> <span class="n" style="color: #333;">return</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">HsAppType</span> <span class="n" style="color: #333;">x</span> <span class="n" style="color: #333;">new_e</span> <span class="n" style="color: #333;">t</span><span class="p">)</span></span>
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<pre style="margin: 0;">+<span id="LC775" class="line" lang="haskell"> <span class="n" style="color: #333;">new_ty</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">zonkTcTypeToTypeX</span> <span class="n" style="color: #333;">env</span> <span class="n" style="color: #333;">ty</span></span>
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<pre style="margin: 0;">+<span id="LC776" class="line" lang="haskell"> <span class="n" style="color: #333;">return</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">HsAppType</span> <span class="n" style="color: #333;">new_ty</span> <span class="n" style="color: #333;">new_e</span> <span class="n" style="color: #333;">t</span><span class="p">)</span></span>
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<pre style="margin: 0;"> <span id="LC777" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- NB: the type is an HsType; can't zonk that!</span></span>
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<pre style="margin: 0;"> <span id="LC778" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC779" class="line" lang="haskell"><span class="n" style="color: #333;">zonkExpr</span> <span class="kr" style="font-weight: 600;">_</span> <span class="n" style="color: #333;">e</span><span class="o" style="font-weight: 600;">@</span><span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">HsRnBracketOut</span> <span class="kr" style="font-weight: 600;">_</span> <span class="kr" style="font-weight: 600;">_</span> <span class="kr" style="font-weight: 600;">_</span><span class="p">)</span></span>
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<pre style="margin: 0;">-<span id="LC2" class="line" lang="plaintext">tcfail007.hs:3:1<span class="idiff left right">4</span>: error:</span>
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<pre style="margin: 0;">+<span id="LC2" class="line" lang="plaintext">tcfail007.hs:3:1<span class="idiff left right">5</span>: error:</span>
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<pre style="margin: 0;"> <span id="LC3" class="line" lang="plaintext"> • No instance for (Num Bool) arising from a use of ‘+’</span>
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<pre style="margin: 0;"> <span id="LC4" class="line" lang="plaintext"> • In the expression: x + 1</span>
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<pre style="margin: 0;"> <span id="LC5" class="line" lang="plaintext"> In an equation for ‘n’:</span>
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<pre style="margin: 0;">-<span id="LC2" class="line" lang="plaintext">tcfail010.hs:3:1<span class="idiff left right">6</span>: error:</span>
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<pre style="margin: 0;">+<span id="LC2" class="line" lang="plaintext">tcfail010.hs:3:1<span class="idiff left right">7</span>: error:</span>
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<pre style="margin: 0;"> <span id="LC3" class="line" lang="plaintext"> • No instance for (Num [a0]) arising from a use of ‘+’</span>
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<pre style="margin: 0;"> <span id="LC4" class="line" lang="plaintext"> • In the expression: z + 2</span>
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<pre style="margin: 0;"> <span id="LC5" class="line" lang="plaintext"> In the expression: \ (y : z) -> z + 2</span>
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<pre style="margin: 0;">-<span id="LC2" class="line" lang="plaintext">tcfail029.hs:6:<span class="idiff left right">7</span>: error:</span>
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<pre style="margin: 0;">+<span id="LC2" class="line" lang="plaintext">tcfail029.hs:6:<span class="idiff left right">9</span>: error:</span>
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<pre style="margin: 0;"> <span id="LC3" class="line" lang="plaintext"> • No instance for (Ord Foo) arising from a use of ‘>’</span>
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<pre style="margin: 0;"> <span id="LC4" class="line" lang="plaintext"> • In the expression: x > Bar</span>
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<pre style="margin: 0;"> <span id="LC5" class="line" lang="plaintext"> In an equation for ‘f’: f x = x > Bar</span></pre>
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<a href="https://gitlab.haskell.org/ghc/ghc/-/commit/f39a0d86de843c105dc9cd4e0bd631176300d7f7#fa073c4cf22cb8c288aab92ab93a4271d5832868"><strong>testsuite/tests/typecheck/should_fail/tcfail034.stderr</strong></a>
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<pre style="margin: 0;"> <span id="LC1" class="line" lang="plaintext"></span>
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<pre style="margin: 0;">-<span id="LC2" class="line" lang="plaintext">tcfail034.hs:17:1<span class="idiff left right">1</span>: error:</span>
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<pre style="margin: 0;">+<span id="LC2" class="line" lang="plaintext">tcfail034.hs:17:1<span class="idiff left right">3</span>: error:</span>
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<pre style="margin: 0;"> <span id="LC3" class="line" lang="plaintext"> • Could not deduce (Integral a) arising from a use of ‘mod’</span>
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<pre style="margin: 0;"> <span id="LC4" class="line" lang="plaintext"> from the context: (Num a, Eq a)</span>
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<pre style="margin: 0;"> <span id="LC5" class="line" lang="plaintext"> bound by the type signature for:</span>
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<a href="https://gitlab.haskell.org/ghc/ghc/-/commit/f39a0d86de843c105dc9cd4e0bd631176300d7f7#60a645922a3929cf447cd215801a94fb071c22fa"><strong>testsuite/tests/typecheck/should_fail/tcfail133.hs</strong></a>
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<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -73,7 +73,7 @@ foo = show $ add (One:@Zero) (One:@One)</td>
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<pre style="margin: 0;"> <span id="LC73" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- Add One One nr', AddDigit (Zero:@nr') One c, Show c</span></span>
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<pre style="margin: 0;"> <span id="LC74" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">--</span></span>
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<pre style="margin: 0;"> <span id="LC75" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- ==> Add One One nr', AddDigit (Zero:@nr') One c, Show c</span></span>
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<pre style="margin: 0;">-<span id="LC76" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">--<span class="idiff left right"> </span></span></span>
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<pre style="margin: 0;">+<span id="LC76" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">--</span></span>
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<pre style="margin: 0;"> <span id="LC77" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- ==> Add One One (One:@One), AddDigit (Zero:@(One:@One)) One c, Show c</span></span>
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<pre style="margin: 0;"> <span id="LC78" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">--</span></span>
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<pre style="margin: 0;"> <span id="LC79" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- ==> AddDigit (Zero:@(One:@One)) One c, Show c</span></span></pre>
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<a href="https://gitlab.haskell.org/ghc/ghc/-/commit/f39a0d86de843c105dc9cd4e0bd631176300d7f7#f8a1d2fdb6a74c812f05828fa4c6dc3144f6dc5c"><strong>testsuite/tests/typecheck/should_fail/tcfail143.stderr</strong></a>
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<pre style="margin: 0;">-<span id="LC2" class="line" lang="plaintext">tcfail143.hs:29:<span class="idiff left right">6</span>: error:</span>
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<pre style="margin: 0;">+<span id="LC2" class="line" lang="plaintext">tcfail143.hs:29:<span class="idiff left right">9</span>: error:</span>
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<pre style="margin: 0;"> <span id="LC3" class="line" lang="plaintext"> • Couldn't match type ‘S Z’ with ‘Z’</span>
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<pre style="margin: 0;"> <span id="LC4" class="line" lang="plaintext"> arising from a functional dependency between:</span>
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<pre style="margin: 0;"> <span id="LC5" class="line" lang="plaintext"> constraint ‘MinMax (S Z) Z Z Z’ arising from a use of ‘extend’</span>
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<pre style="margin: 0;">-<span id="LC2" class="line" lang="plaintext">tcfail208.hs:4:1<span class="idiff left right">0</span>: error:</span>
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<pre style="margin: 0;">+<span id="LC2" class="line" lang="plaintext">tcfail208.hs:4:1<span class="idiff left right">9</span>: error:</span>
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<pre style="margin: 0;"> <span id="LC3" class="line" lang="plaintext"> • Could not deduce (Eq (m a)) arising from a use of ‘==’</span>
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<pre style="margin: 0;"> <span id="LC4" class="line" lang="plaintext"> from the context: (Monad m, Eq a)</span>
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<pre style="margin: 0;"> <span id="LC5" class="line" lang="plaintext"> bound by the type signature for:</span>
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