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<h3>
Marge Bot pushed to branch master
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/964d3ea21e734a4b2ad3ab97955274a003242121">964d3ea2</a></strong>
<div>
<span>by John Ericson</span>
<i>at 2020-05-21T12:17:30-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">Use `Checker` for `tc_pat`
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/b797aa420b65c8ee214a4fc94813d0d597352bb4">b797aa42</a></strong>
<div>
<span>by John Ericson</span>
<i>at 2020-05-21T12:17:30-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">Use `Checker` for `tc_lpat` and `tc_lpats`
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/5108e84abb102920ab28e3aeb083ab6e483eb2f6">5108e84a</a></strong>
<div>
<span>by John Ericson</span>
<i>at 2020-05-21T12:17:30-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">More judiciously panic in `ts_pat`
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</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/510e04515bb3eaed95d374d685b5322ad7e6389d">510e0451</a></strong>
<div>
<span>by John Ericson</span>
<i>at 2020-05-21T12:17:30-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">Put `PatEnv` first in `GHC.Tc.Gen.Pat.Checker`
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/cb4231db322f4a2bb146c456852df6cdf1498dca">cb4231db</a></strong>
<div>
<span>by John Ericson</span>
<i>at 2020-05-21T12:17:30-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">Tiny cleaup eta-reduce away a function argument
In GHC, not in the code being compiled!
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/6890c38d4568ca444cccc47dd1a86c5e020c3521">6890c38d</a></strong>
<div>
<span>by John Ericson</span>
<i>at 2020-05-21T12:17:30-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">Use braces with do in `SplicePat` case for consistency
</pre>
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<h4>1 changed file:</h4>
<ul>
<li class="file-stats">
<a href="#3ee8be814b6c6727880deab3772e6af922524bf0">
compiler/GHC/Tc/Gen/Pat.hs
</a>
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<h4>Changes:</h4>
<li id="3ee8be814b6c6727880deab3772e6af922524bf0">
<a href="https://gitlab.haskell.org/ghc/ghc/-/compare/0004ccb885e534c386ceae21580fc59ec7ad0ede...6890c38d4568ca444cccc47dd1a86c5e020c3521#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">@@ -4,8 +4,10 @@</td>
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<pre style="margin: 0;"> <span id="LC4" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC5" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">-}</span></span>
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<td class="diff-line-num new_line" data-linenumber="6" 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="LC6" class="line" lang="haskell"></span>
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<td class="diff-line-num new_line old" data-linenumber="7" 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="LC7" class="line" lang="haskell"><span class="cp" style="color: #999; font-weight: 600;">{-# LANGUAGE CPP<span class="idiff left right">, RankNTypes, TupleSections</span> #-}</span></span>
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<td class="diff-line-num new new_line" data-linenumber="7" 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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<pre style="margin: 0;">+<span id="LC7" class="line" lang="haskell"><span class="cp" style="color: #999; font-weight: 600;">{-# LANGUAGE CPP #-}</span></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 FlexibleContexts #-}</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 RankNTypes #-}</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 TupleSections #-}</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 TypeFamilies #-}</span></span>
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<pre style="margin: 0;"> <span id="LC12" class="line" lang="haskell"><span class="cp" style="color: #999; font-weight: 600;">{-# LANGUAGE ViewPatterns #-}</span></span>
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<pre style="margin: 0;"> <span id="LC13" class="line" lang="haskell"></span>
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<td class="diff-line-num unfold js-unfold old_line" data-linenumber="87" 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="89" 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">@@ -87,7 +89,7 @@ tcLetPat sig_fn no_gen pat pat_ty thing_inside</td>
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<pre style="margin: 0;"> <span id="LC89" class="line" lang="haskell"> <span class="p">,</span> <span class="n" style="color: #333;">pe_ctxt</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">ctxt</span></span>
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<pre style="margin: 0;"> <span id="LC90" class="line" lang="haskell"> <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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<pre style="margin: 0;"> <span id="LC91" class="line" lang="haskell"></span>
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<pre style="margin: 0;">-<span id="LC90" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">tc_lpat</span> <span class="n" style="color: #333;">pat</span><span class="idiff left"> </span><span class="n" style="color: #333;"><span class="idiff">pat_ty</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff right">penv</span></span> <span class="n" style="color: #333;">thing_inside</span> <span class="p">}</span></span>
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<pre style="margin: 0;">+<span id="LC92" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">tc_lpat</span> <span class="n" style="color: #333;">pat<span class="idiff left">_ty</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">penv</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff right">pat</span></span> <span class="n" style="color: #333;">thing_inside</span> <span class="p">}</span></span>
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<pre style="margin: 0;"> <span id="LC93" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC94" 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="LC95" class="line" lang="haskell"><span class="n" style="color: #333;">tcPats</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">HsMatchContext</span> <span class="kt" style="color: #458; font-weight: 600;">GhcRn</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">@@ -108,7 +110,7 @@ tcPats :: HsMatchContext GhcRn</td>
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<pre style="margin: 0;"> <span id="LC110" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- 4. Check that no existentials escape</span></span>
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<pre style="margin: 0;"> <span id="LC111" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC112" class="line" lang="haskell"><span class="n" style="color: #333;">tcPats</span> <span class="n" style="color: #333;">ctxt</span> <span class="n" style="color: #333;">pats</span> <span class="n" style="color: #333;">pat_tys</span> <span class="n" style="color: #333;">thing_inside</span></span>
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<pre style="margin: 0;">-<span id="LC111" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">tc_lpats</span> <span class="n" style="color: #333;">p<span class="idiff left">env</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">pats</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff right">pat_ty</span>s</span> <span class="n" style="color: #333;">thing_inside</span></span>
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<pre style="margin: 0;">+<span id="LC113" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">tc_lpats</span> <span class="n" style="color: #333;">p<span class="idiff left">at_tys</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">penv</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff right">pat</span>s</span> <span class="n" style="color: #333;">thing_inside</span></span>
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<pre style="margin: 0;"> <span id="LC114" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">where</span></span>
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<pre style="margin: 0;"> <span id="LC115" 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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<pre style="margin: 0;"> <span id="LC116" 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">@@ -117,7 +119,7 @@ tcInferPat :: HsMatchContext GhcRn -> LPat GhcRn</td>
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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;">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="LC120" 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="LC121" 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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<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;"><span class="idiff left">pat</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="n" style="color: #333;"><span class="idiff right">penv</span></span> <span class="n" style="color: #333;">thing_inside</span></span>
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<pre style="margin: 0;">+<span id="LC122" class="line" lang="haskell"> <span class="n" style="color: #333;">tc_lpat</span> <span class="n" style="color: #333;"><span class="idiff left">exp_ty</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">penv</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff right">pat</span></span> <span class="n" style="color: #333;">thing_inside</span></span>
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<pre style="margin: 0;"> <span id="LC123" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">where</span></span>
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<pre style="margin: 0;"> <span id="LC124" 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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<pre style="margin: 0;"> <span id="LC125" class="line" lang="haskell"></span>
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<td class="diff-line-num unfold js-unfold new_line" data-linenumber="136" 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">@@ -134,7 +136,7 @@ tcCheckPat_O :: HsMatchContext GhcRn</td>
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<pre style="margin: 0;"> <span id="LC136" 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="c1" style="color: #998; font-style: italic;">-- Checker for body</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;">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>
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<pre style="margin: 0;"> <span id="LC138" class="line" lang="haskell"><span class="n" style="color: #333;">tcCheckPat_O</span> <span class="n" style="color: #333;">ctxt</span> <span class="n" style="color: #333;">orig</span> <span class="n" style="color: #333;">pat</span> <span class="n" style="color: #333;">pat_ty</span> <span class="n" style="color: #333;">thing_inside</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;">tc_lpat</span> <span class="n" style="color: #333;"><span class="idiff left">pat</span></span><span class="idiff"> </span><span class="p"><span class="idiff">(</span></span><span class="n" style="color: #333;"><span class="idiff">mkCheckExpType</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">pat_ty</span></span><span class="p"><span class="idiff">)</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff right">penv</span></span> <span class="n" style="color: #333;">thing_inside</span></span>
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<pre style="margin: 0;">+<span id="LC139" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">tc_lpat</span> <span class="p"><span class="idiff left">(</span></span><span class="n" style="color: #333;"><span class="idiff">mkCheckExpType</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">pat_ty</span></span><span class="p"><span class="idiff">)</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">penv</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff right">pat</span></span> <span class="n" style="color: #333;">thing_inside</span></span>
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<pre style="margin: 0;"> <span id="LC140" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">where</span></span>
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<pre style="margin: 0;"> <span id="LC141" 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="n" style="color: #333;">orig</span> <span class="p">}</span></span>
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<pre style="margin: 0;"> <span id="LC142" 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">@@ -291,14 +293,17 @@ Hence the getErrCtxt/setErrCtxt stuff in tcMultiple</td>
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<pre style="margin: 0;"> <span id="LC293" 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="LC294" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC295" 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="LC296" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC297" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">type</span> <span class="kt" style="color: #458; font-weight: 600;">Checker</span> <span class="n" style="color: #333;">inp</span> <span class="n" style="color: #333;">out</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">forall</span> <span class="n" style="color: #333;">r</span><span class="o" style="font-weight: 600;">.</span></span>
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<pre style="margin: 0;">-<span id="LC295" class="line" lang="haskell"> <span class="n" style="color: #333;">inp</span></span>
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<pre style="margin: 0;">-<span id="LC296" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">PatEnv</span></span>
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<pre style="margin: 0;">-<span id="LC297" 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;">r</span></span>
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<pre style="margin: 0;">-<span id="LC298" 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="n" style="color: #333;">out</span><span class="p">,</span> <span class="n" style="color: #333;">r</span><span class="p">)</span></span>
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<pre style="margin: 0;">+<span id="LC298" class="line" lang="haskell"> <span class="kt" style="color: #458; font-weight: 600;">PatEnv</span></span>
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<pre style="margin: 0;">+<span id="LC299" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">inp</span></span>
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<pre style="margin: 0;">+<span id="LC300" 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;">r</span> <span class="c1" style="color: #998; font-style: italic;">-- Thing inside</span></span>
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<pre style="margin: 0;">+<span id="LC301" 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="n" style="color: #333;">out</span></span>
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<pre style="margin: 0;">+<span id="LC302" class="line" lang="haskell"> <span class="p">,</span> <span class="n" style="color: #333;">r</span> <span class="c1" style="color: #998; font-style: italic;">-- Result of thing inside</span></span>
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<pre style="margin: 0;">+<span id="LC303" class="line" lang="haskell"> <span class="p">)</span></span>
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<pre style="margin: 0;"> <span id="LC304" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC305" class="line" lang="haskell"><span class="n" style="color: #333;">tcMultiple</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">Checker</span> <span class="n" style="color: #333;">inp</span> <span class="n" style="color: #333;">out</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Checker</span> <span class="p">[</span><span class="n" style="color: #333;">inp</span><span class="p">]</span> <span class="p">[</span><span class="n" style="color: #333;">out</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;">tcMultiple</span> <span class="n" style="color: #333;">tc_pat</span> <span class="n" style="color: #333;"><span class="idiff left">args</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff right">penv</span></span> <span class="n" style="color: #333;">thing_inside</span></span>
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<pre style="margin: 0;">+<span id="LC306" class="line" lang="haskell"><span class="n" style="color: #333;">tcMultiple</span> <span class="n" style="color: #333;">tc_pat</span> <span class="n" style="color: #333;"><span class="idiff left">penv</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff right">args</span></span> <span class="n" style="color: #333;">thing_inside</span></span>
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<pre style="margin: 0;"> <span id="LC307" 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;">err_ctxt</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">getErrCtxt</span></span>
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<pre style="margin: 0;"> <span id="LC308" class="line" lang="haskell"> <span class="p">;</span> <span class="kr" style="font-weight: 600;">let</span> <span class="n" style="color: #333;">loop</span> <span class="kr" style="font-weight: 600;">_</span> <span class="kt" style="color: #458; font-weight: 600;">[]</span></span>
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<pre style="margin: 0;"> <span id="LC309" 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</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">thing_inside</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">@@ -306,7 +311,7 @@ tcMultiple tc_pat args penv thing_inside</td>
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<pre style="margin: 0;"> <span id="LC311" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC312" class="line" lang="haskell"> <span class="n" style="color: #333;">loop</span> <span class="n" style="color: #333;">penv</span> <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;">args</span><span class="p">)</span></span>
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<pre style="margin: 0;"> <span id="LC313" 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;">p'</span><span class="p">,</span> <span class="p">(</span><span class="n" style="color: #333;">ps'</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="LC309" class="line" lang="haskell"> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">tc_pat</span> <span class="n" style="color: #333;"><span class="idiff left">arg</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff right">penv</span></span> <span class="o" style="font-weight: 600;">$</span></span>
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<pre style="margin: 0;">+<span id="LC314" class="line" lang="haskell"> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">tc_pat</span> <span class="n" style="color: #333;"><span class="idiff left">penv</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff right">arg</span></span> <span class="o" style="font-weight: 600;">$</span></span>
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<pre style="margin: 0;"> <span id="LC315" class="line" lang="haskell"> <span class="n" style="color: #333;">setErrCtxt</span> <span class="n" style="color: #333;">err_ctxt</span> <span class="o" style="font-weight: 600;">$</span></span>
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<pre style="margin: 0;"> <span id="LC316" class="line" lang="haskell"> <span class="n" style="color: #333;">loop</span> <span class="n" style="color: #333;">penv</span> <span class="n" style="color: #333;">args</span></span>
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<pre style="margin: 0;"> <span id="LC317" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- setErrCtxt: restore context before doing the next pattern</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">@@ -317,52 +322,46 @@ tcMultiple tc_pat args penv thing_inside</td>
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<pre style="margin: 0;"> <span id="LC322" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">loop</span> <span class="n" style="color: #333;">penv</span> <span class="n" style="color: #333;">args</span> <span class="p">}</span></span>
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<pre style="margin: 0;"> <span id="LC323" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC324" 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="LC320" class="line" lang="haskell"><span class="n" style="color: #333;">tc_lpat</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">LPat</span> <span class="kt" style="color: #458; font-weight: 600;">GhcRn</span></span>
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<pre style="margin: 0;">-<span id="LC321" class="line" lang="haskell"> <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="LC322" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">PatEnv</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> <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="LC324" 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>
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<pre style="margin: 0;">-<span id="LC325" class="line" lang="haskell"><span class="n" style="color: #333;">tc_lpat</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">L</span> <span class="n" style="color: #333;">span</span> <span class="n" style="color: #333;">pat</span><span class="p">)</span> <span class="n" style="color: #333;">pat_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="LC325" class="line" lang="haskell"><span class="n" style="color: #333;">tc_lpat</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="LC326" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Checker</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;">GhcRn</span><span class="p">)</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>
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<pre style="margin: 0;">+<span id="LC327" class="line" lang="haskell"><span class="n" style="color: #333;">tc_lpat</span> <span class="n" style="color: #333;">pat_ty</span> <span class="n" style="color: #333;">penv</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">L</span> <span class="n" style="color: #333;">span</span> <span class="n" style="color: #333;">pat</span><span class="p">)</span> <span class="n" style="color: #333;">thing_inside</span></span>
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<pre style="margin: 0;"> <span id="LC328" 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;">span</span> <span class="o" style="font-weight: 600;">$</span></span>
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<pre style="margin: 0;">-<span id="LC327" 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;">pat'</span><span class="p">,</span> <span class="n" style="color: #333;">res</span><span class="p">)</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">maybeWrapPatCtxt</span> <span class="n" style="color: #333;">pat</span> <span class="p">(</span><span class="n" style="color: #333;">tc_pat</span> <span class="n" style="color: #333;">p<span class="idiff left">env</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">pat</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff right">pat_ty</span></span><span class="p">)</span></span>
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<pre style="margin: 0;">+<span id="LC329" 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;">pat'</span><span class="p">,</span> <span class="n" style="color: #333;">res</span><span class="p">)</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">maybeWrapPatCtxt</span> <span class="n" style="color: #333;">pat</span> <span class="p">(</span><span class="n" style="color: #333;">tc_pat</span> <span class="n" style="color: #333;">p<span class="idiff left">at_ty</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">penv</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff right">pat</span></span><span class="p">)</span></span>
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<pre style="margin: 0;"> <span id="LC330" class="line" lang="haskell"> <span class="n" style="color: #333;">thing_inside</span></span>
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<pre style="margin: 0;"> <span id="LC331" 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;">span</span> <span class="n" style="color: #333;">pat'</span><span class="p">,</span> <span class="n" style="color: #333;">res</span><span class="p">)</span> <span class="p">}</span></span>
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<pre style="margin: 0;"> <span id="LC332" class="line" lang="haskell"></span>
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<pre style="margin: 0;">-<span id="LC331" class="line" lang="haskell"><span class="n" style="color: #333;">tc_lpats</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">PatEnv</span></span>
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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;">LPat</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;">ExpSigmaType</span><span class="p">]</span></span>
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<pre style="margin: 0;">-<span id="LC333" 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="LC334" 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>
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<pre style="margin: 0;">-<span id="LC335" class="line" lang="haskell"><span class="n" style="color: #333;">tc_lpats</span> <span class="n" style="color: #333;">penv</span> <span class="n" style="color: #333;">pats</span> <span class="n" style="color: #333;">tys</span> <span class="n" style="color: #333;">thing_inside</span></span>
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<pre style="margin: 0;">+<span id="LC333" class="line" lang="haskell"><span class="n" style="color: #333;">tc_lpats</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>
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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="kt" style="color: #458; font-weight: 600;">Checker</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;">GhcRn</span><span class="p">]</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>
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<pre style="margin: 0;">+<span id="LC335" class="line" lang="haskell"><span class="n" style="color: #333;">tc_lpats</span> <span class="n" style="color: #333;">tys</span> <span class="n" style="color: #333;">penv</span> <span class="n" style="color: #333;">pats</span></span>
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<pre style="margin: 0;"> <span id="LC336" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">ASSERT2</span><span class="p">(</span> <span class="n" style="color: #333;">equalLength</span> <span class="n" style="color: #333;">pats</span> <span class="n" style="color: #333;">tys</span><span class="p">,</span> <span class="n" style="color: #333;">ppr</span> <span class="n" style="color: #333;">pats</span> <span class="o" style="font-weight: 600;">$$</span> <span class="n" style="color: #333;">ppr</span> <span class="n" style="color: #333;">tys</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;">tcMultiple</span> <span class="p">(</span><span class="nf" style="color: #900; font-weight: 600;">\</span><span class="p"><span class="idiff left">(</span></span><span class="n" style="color: #333;"><span class="idiff">p</span></span><span class="p"><span class="idiff">,</span></span><span class="n" style="color: #333;"><span class="idiff">t</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">tc_lpat</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">p</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff right">t</span></span><span class="p">)</span></span>
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<pre style="margin: 0;">-<span id="LC338" 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">zipEqual</span></span><span class="idiff"> </span><span class="s" style="color: #d14;"><span class="idiff">"tc_lpats"</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">pats</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">tys</span></span><span class="p"><span class="idiff right">)</span></span></span>
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<pre style="margin: 0;">-<span id="LC339" class="line" lang="haskell"> <span class="idiff left"> </span><span class="n" style="color: #333;"><span class="idiff">penv</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff right">thing_inside</span></span></span>
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<pre style="margin: 0;">+<span id="LC337" class="line" lang="haskell"> <span class="n" style="color: #333;">tcMultiple</span> <span class="p">(</span><span class="nf" style="color: #900; font-weight: 600;">\</span><span class="idiff left"> </span><span class="n" style="color: #333;"><span class="idiff">penv'</span></span><span class="idiff"> </span><span class="p"><span class="idiff">(</span></span><span class="n" style="color: #333;"><span class="idiff">p</span></span><span class="p"><span class="idiff">,</span></span><span class="n" style="color: #333;"><span class="idiff">t</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">tc_lpat</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">t</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">penv'</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff right">p</span></span><span class="p">)</span></span>
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<pre style="margin: 0;">+<span id="LC338" class="line" lang="haskell"> <span class="n" style="color: #333;"><span class="idiff left right">penv</span></span></span>
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<pre style="margin: 0;">+<span id="LC339" class="line" lang="haskell"> <span class="p"><span class="idiff left">(</span></span><span class="n" style="color: #333;"><span class="idiff">zipEqual</span></span><span class="idiff"> </span><span class="s" style="color: #d14;"><span class="idiff">"tc_lpats"</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">pats</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">tys</span></span><span class="p"><span class="idiff right">)</span></span></span>
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<pre style="margin: 0;"> <span id="LC340" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC341" 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="LC342" class="line" lang="haskell"><span class="n" style="color: #333;">tc_pat</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">PatEnv</span></span>
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<pre style="margin: 0;">-<span id="LC343" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Pat</span> <span class="kt" style="color: #458; font-weight: 600;">GhcRn</span></span>
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<pre style="margin: 0;">-<span id="LC344" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">ExpSigmaType</span> <span class="c1" style="color: #998; font-style: italic;">-- Fully refined result type</span></span>
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<pre style="margin: 0;">-<span id="LC345" 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="c1" style="color: #998; font-style: italic;">-- Thing inside</span></span>
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<pre style="margin: 0;">-<span id="LC346" 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;">Pat</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;">-- Translated pattern</span></span>
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<pre style="margin: 0;">-<span id="LC347" class="line" lang="haskell"> <span class="n" style="color: #333;">a</span><span class="p">)</span> <span class="c1" style="color: #998; font-style: italic;">-- Result of thing inside</span></span>
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<pre style="margin: 0;">-<span id="LC348" class="line" lang="haskell"></span>
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<pre style="margin: 0;">-<span id="LC349" 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;">VarPat</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;">name</span><span class="p">))</span> <span class="n" style="color: #333;">pat_ty</span> <span class="n" style="color: #333;">thing_inside</span></span>
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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="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;">id</span><span class="p">)</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">tcPatBndr</span> <span class="n" style="color: #333;">penv</span> <span class="n" style="color: #333;">name</span> <span class="n" style="color: #333;">pat_ty</span></span>
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<pre style="margin: 0;">+<span id="LC342" class="line" lang="haskell"><span class="n" style="color: #333;">tc_pat</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="LC343" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- ^ Fully refined result type</span></span>
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<pre style="margin: 0;">+<span id="LC344" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Checker</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Pat</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;">Pat</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="LC345" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- ^ Translated pattern</span></span>
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<pre style="margin: 0;">+<span id="LC346" class="line" lang="haskell"><span class="n" style="color: #333;">tc_pat</span> <span class="n" style="color: #333;">pat_ty</span> <span class="n" style="color: #333;">penv</span> <span class="n" style="color: #333;">ps_pat</span> <span class="n" style="color: #333;">thing_inside</span> <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">case</span> <span class="n" style="color: #333;">ps_pat</span> <span class="kr" style="font-weight: 600;">of</span></span>
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<pre style="margin: 0;">+<span id="LC347" class="line" lang="haskell"></span>
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<pre style="margin: 0;">+<span id="LC348" class="line" lang="haskell"> <span class="kt" style="color: #458; font-weight: 600;">VarPat</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;">name</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="LC349" 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;">id</span><span class="p">)</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">tcPatBndr</span> <span class="n" style="color: #333;">penv</span> <span class="n" style="color: #333;">name</span> <span class="n" style="color: #333;">pat_ty</span></span>
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<pre style="margin: 0;"> <span id="LC350" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">res</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">tcExtendIdEnv1</span> <span class="n" style="color: #333;">name</span> <span class="n" style="color: #333;">id</span> <span class="n" style="color: #333;">thing_inside</span></span>
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<pre style="margin: 0;"> <span id="LC351" class="line" lang="haskell"> <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;">readExpType</span> <span class="n" style="color: #333;">pat_ty</span></span>
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<pre style="margin: 0;"> <span id="LC352" 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;">mkHsWrapPat</span> <span class="n" style="color: #333;">wrap</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">VarPat</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;">id</span><span class="p">))</span> <span class="n" style="color: #333;">pat_ty</span><span class="p">,</span> <span class="n" style="color: #333;">res</span><span class="p">)</span> <span class="p">}</span></span>
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<pre style="margin: 0;"> <span id="LC353" class="line" lang="haskell"></span>
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<pre style="margin: 0;">-<span id="LC355" class="line" lang="haskell"><span class="n" style="color: #333;"><span class="idiff left">tc_pat</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">penv</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">ParPat</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">x</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">pat</span></span><span class="p"><span class="idiff">)</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">pat_ty</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff right">thing_inside</span></span></span>
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<pre style="margin: 0;">-<span id="LC356" 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="p"><span class="idiff">(</span></span><span class="n" style="color: #333;"><span class="idiff">pat'</span></span><span class="p"><span class="idiff">,</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">res</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">tc_lpat</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">pat</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">pat_ty</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff right">penv</span></span> <span class="n" style="color: #333;">thing_inside</span></span>
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<pre style="margin: 0;">+<span id="LC354" class="line" lang="haskell"><span class="idiff left"> </span><span class="kt" style="color: #458; font-weight: 600;"><span class="idiff">ParPat</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">x</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">pat</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 right">do</span></span></span>
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<pre style="margin: 0;">+<span id="LC355" class="line" lang="haskell"> <span class="idiff left"> </span><span class="p"><span class="idiff">{</span></span><span class="idiff"> </span><span class="p"><span class="idiff">(</span></span><span class="n" style="color: #333;"><span class="idiff">pat'</span></span><span class="p"><span class="idiff">,</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">res</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">tc_lpat</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">pat_ty</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">penv</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff right">pat</span></span> <span class="n" style="color: #333;">thing_inside</span></span>
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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;">return</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">ParPat</span> <span class="n" style="color: #333;">x</span> <span class="n" style="color: #333;">pat'</span><span class="p">,</span> <span class="n" style="color: #333;">res</span><span class="p">)</span> <span class="p">}</span></span>
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<pre style="margin: 0;"> <span id="LC357" class="line" lang="haskell"></span>
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<pre style="margin: 0;">-<span id="LC359" class="line" lang="haskell"><span class="n" style="color: #333;"><span class="idiff left">tc_pat</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">penv</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">BangPat</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">x</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">pat</span></span><span class="p"><span class="idiff">)</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">pat_ty</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff right">thing_inside</span></span></span>
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<pre style="margin: 0;">-<span id="LC360" 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="p"><span class="idiff">(</span></span><span class="n" style="color: #333;"><span class="idiff">pat'</span></span><span class="p"><span class="idiff">,</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">res</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">tc_lpat</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">pat</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">pat_ty</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff right">penv</span></span> <span class="n" style="color: #333;">thing_inside</span></span>
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<pre style="margin: 0;">+<span id="LC358" class="line" lang="haskell"><span class="idiff left"> </span><span class="kt" style="color: #458; font-weight: 600;"><span class="idiff">BangPat</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">x</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">pat</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 right">do</span></span></span>
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<pre style="margin: 0;">+<span id="LC359" class="line" lang="haskell"> <span class="idiff left"> </span><span class="p"><span class="idiff">{</span></span><span class="idiff"> </span><span class="p"><span class="idiff">(</span></span><span class="n" style="color: #333;"><span class="idiff">pat'</span></span><span class="p"><span class="idiff">,</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">res</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">tc_lpat</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">pat_ty</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">penv</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff right">pat</span></span> <span class="n" style="color: #333;">thing_inside</span></span>
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<pre style="margin: 0;"> <span id="LC360" 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;">BangPat</span> <span class="n" style="color: #333;">x</span> <span class="n" style="color: #333;">pat'</span><span class="p">,</span> <span class="n" style="color: #333;">res</span><span class="p">)</span> <span class="p">}</span></span>
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<pre style="margin: 0;"> <span id="LC361" class="line" lang="haskell"></span>
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<pre style="margin: 0;">-<span id="LC363" class="line" lang="haskell"><span class="n" style="color: #333;"><span class="idiff left">tc_pat</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">penv</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">LazyPat</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">x</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">pat</span></span><span class="p"><span class="idiff">)</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">pat_ty</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff right">thing_inside</span></span></span>
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<pre style="margin: 0;">-<span id="LC364" 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 right">do</span></span> <span class="p">{</span> <span class="p">(</span><span class="n" style="color: #333;">pat'</span><span class="p">,</span> <span class="p">(</span><span class="n" style="color: #333;">res</span><span class="p">,</span> <span class="n" style="color: #333;">pat_ct</span><span class="p">))</span></span>
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<pre style="margin: 0;">-<span id="LC365" class="line" lang="haskell"> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">tc_lpat</span> <span class="n" style="color: #333;">pat</span><span class="idiff left"> </span><span class="n" style="color: #333;"><span class="idiff">pat_ty</span></span><span class="idiff"> </span><span class="p"><span class="idiff">(</span></span><span class="n" style="color: #333;"><span class="idiff">makeLazy</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">penv</span></span><span class="p"><span class="idiff right">)</span></span> <span class="o" style="font-weight: 600;">$</span></span>
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<pre style="margin: 0;">+<span id="LC362" class="line" lang="haskell"><span class="idiff left"> </span><span class="kt" style="color: #458; font-weight: 600;"><span class="idiff">LazyPat</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">x</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">pat</span></span><span class="idiff"> </span><span class="o" style="font-weight: 600;"><span class="idiff">-></span></span><span class="idiff"> </span><span class="kr" style="font-weight: 600;"><span class="idiff right">do</span></span></span>
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<pre style="margin: 0;">+<span id="LC363" class="line" lang="haskell"> <span class="idiff left right"> </span> <span class="p">{</span> <span class="p">(</span><span class="n" style="color: #333;">pat'</span><span class="p">,</span> <span class="p">(</span><span class="n" style="color: #333;">res</span><span class="p">,</span> <span class="n" style="color: #333;">pat_ct</span><span class="p">))</span></span>
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<pre style="margin: 0;">+<span id="LC364" class="line" lang="haskell"> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">tc_lpat</span> <span class="n" style="color: #333;">pat<span class="idiff left">_ty</span></span><span class="idiff"> </span><span class="p"><span class="idiff">(</span></span><span class="n" style="color: #333;"><span class="idiff">makeLazy</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">penv</span></span><span class="p"><span class="idiff">)</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff right">pat</span></span> <span class="o" style="font-weight: 600;">$</span></span>
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<pre style="margin: 0;"> <span id="LC365" class="line" lang="haskell"> <span class="n" style="color: #333;">captureConstraints</span> <span class="n" style="color: #333;">thing_inside</span></span>
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<pre style="margin: 0;"> <span id="LC366" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- Ignore refined penv', revert to penv</span></span>
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<pre style="margin: 0;"> <span id="LC367" 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">@@ -376,16 +375,16 @@ tc_pat penv (LazyPat x pat) pat_ty thing_inside</td>
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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="p">;</span> <span class="n" style="color: #333;">return</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">LazyPat</span> <span class="n" style="color: #333;">x</span> <span class="n" style="color: #333;">pat'</span><span class="p">,</span> <span class="n" style="color: #333;">res</span><span class="p">)</span> <span class="p">}</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="LC379" class="line" lang="haskell"><span class="n" style="color: #333;"><span class="idiff left">tc_pat</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">WildPat</span></span><span class="idiff"> </span><span class="kr" style="font-weight: 600;"><span class="idiff">_</span></span><span class="p"><span class="idiff">)</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">pat_ty</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff right">thing_inside</span></span></span>
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<pre style="margin: 0;">-<span id="LC380" 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 right">do</span></span> <span class="p">{</span> <span class="n" style="color: #333;">res</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">thing_inside</span></span>
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<pre style="margin: 0;">+<span id="LC378" class="line" lang="haskell"><span class="idiff left"> </span><span class="kt" style="color: #458; font-weight: 600;"><span class="idiff">WildPat</span></span><span class="idiff"> </span><span class="kr" style="font-weight: 600;"><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="kr" style="font-weight: 600;"><span class="idiff right">do</span></span></span>
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<pre style="margin: 0;">+<span id="LC379" class="line" lang="haskell"> <span class="idiff left right"> </span> <span class="p">{</span> <span class="n" style="color: #333;">res</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">thing_inside</span></span>
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<pre style="margin: 0;"> <span id="LC380" class="line" lang="haskell"> <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;">expTypeToType</span> <span class="n" style="color: #333;">pat_ty</span></span>
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382
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381
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<pre style="margin: 0;"> <span id="LC381" 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;">WildPat</span> <span class="n" style="color: #333;">pat_ty</span><span class="p">,</span> <span class="n" style="color: #333;">res</span><span class="p">)</span> <span class="p">}</span></span>
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<pre style="margin: 0;"> <span id="LC382" class="line" lang="haskell"></span>
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<pre style="margin: 0;">-<span id="LC384" class="line" lang="haskell"><span class="n" style="color: #333;"><span class="idiff left">tc_pat</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">penv</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">AsPat</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">x</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">L</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">nm_loc</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">name</span></span><span class="p"><span class="idiff">)</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">pat</span></span><span class="p"><span class="idiff">)</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">pat_ty</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff right">thing_inside</span></span></span>
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<pre style="margin: 0;">-<span id="LC385" 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 right">do</span></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;">bndr_id</span><span class="p">)</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">setSrcSpan</span> <span class="n" style="color: #333;">nm_loc</span> <span class="p">(</span><span class="n" style="color: #333;">tcPatBndr</span> <span class="n" style="color: #333;">penv</span> <span class="n" style="color: #333;">name</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="LC383" class="line" lang="haskell"><span class="idiff left"> </span><span class="kt" style="color: #458; font-weight: 600;"><span class="idiff">AsPat</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">x</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">L</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">nm_loc</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">name</span></span><span class="p"><span class="idiff">)</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">pat</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 right">do</span></span></span>
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<pre style="margin: 0;">+<span id="LC384" class="line" lang="haskell"> <span class="idiff left right"> </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;">bndr_id</span><span class="p">)</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">setSrcSpan</span> <span class="n" style="color: #333;">nm_loc</span> <span class="p">(</span><span class="n" style="color: #333;">tcPatBndr</span> <span class="n" style="color: #333;">penv</span> <span class="n" style="color: #333;">name</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="LC385" 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;">res</span><span class="p">)</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">tcExtendIdEnv1</span> <span class="n" style="color: #333;">name</span> <span class="n" style="color: #333;">bndr_id</span> <span class="o" style="font-weight: 600;">$</span></span>
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<pre style="margin: 0;">-<span id="LC387" class="line" lang="haskell"> <span class="n" style="color: #333;">tc_lpat</span> <span class="n" style="color: #333;"><span class="idiff left">pat</span></span><span class="idiff right"> </span><span class="p">(</span><span class="n" style="color: #333;">mkCheckExpType</span> <span class="o" style="font-weight: 600;">$</span> <span class="n" style="color: #333;">idType</span> <span class="n" style="color: #333;">bndr_id</span><span class="p">)</span></span>
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<pre style="margin: 0;">-<span id="LC388" class="line" lang="haskell"> <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="LC386" class="line" lang="haskell"> <span class="n" style="color: #333;">tc_lpat</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;">idType</span> <span class="n" style="color: #333;">bndr_id</span><span class="p">)</span></span>
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<pre style="margin: 0;">+<span id="LC387" class="line" lang="haskell"> <span class="n" style="color: #333;">penv</span> <span class="n" style="color: #333;"><span class="idiff left">pat</span></span><span class="idiff right"> </span><span class="n" style="color: #333;">thing_inside</span></span>
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<pre style="margin: 0;"> <span id="LC388" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- NB: if we do inference on:</span></span>
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<pre style="margin: 0;"> <span id="LC389" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- \ (y@(x::forall a. a->a)) = e</span></span>
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<pre style="margin: 0;"> <span id="LC390" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- we'll fail. The as-pattern infers a monotype for 'y', which then</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">@@ -397,8 +396,8 @@ 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="LC396" 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;">mkHsWrapPat</span> <span class="n" style="color: #333;">wrap</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">AsPat</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;">nm_loc</span> <span class="n" style="color: #333;">bndr_id</span><span class="p">)</span> <span class="n" style="color: #333;">pat'</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="LC397" class="line" lang="haskell"> <span class="n" style="color: #333;">res</span><span class="p">)</span> <span class="p">}</span></span>
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<pre style="margin: 0;"> <span id="LC398" 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;"><span class="idiff left">tc_pat</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">penv</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">ViewPat</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">expr</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">pat</span></span><span class="p"><span class="idiff">)</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">overall_pat_ty</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff right">thing_inside</span></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 class="idiff left">=</span></span><span class="idiff"> </span><span class="kr" style="font-weight: 600;"><span class="idiff right">do</span></span> <span class="p">{</span></span>
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<pre style="margin: 0;">+<span id="LC399" class="line" lang="haskell"><span class="idiff left"> </span><span class="kt" style="color: #458; font-weight: 600;"><span class="idiff">ViewPat</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">expr</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">pat</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 right">do</span></span></span>
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<pre style="margin: 0;">+<span id="LC400" class="line" lang="haskell"> <span class="idiff left right"> </span> <span class="p">{</span></span>
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<pre style="margin: 0;"> <span id="LC401" 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="LC402" 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="LC403" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- blah -> forall b. burble</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">@@ -420,25 +419,25 @@ tc_pat penv (ViewPat _ expr pat) overall_pat_ty thing_inside</td>
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<pre style="margin: 0;"> <span id="LC419" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- expr_wrap1 :: expr_ty "->" (inf_arg_ty -> inf_res_ty)</span></span>
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<pre style="margin: 0;"> <span id="LC420" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC421" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- Check that overall pattern is more polymorphic than arg type</span></span>
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<pre style="margin: 0;">-<span id="LC423" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">expr_wrap2</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">tc_sub_type</span> <span class="n" style="color: #333;">penv</span> <span class="n" style="color: #333;"><span class="idiff left right">overall_</span>pat_ty</span> <span class="n" style="color: #333;">inf_arg_ty</span></span>
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<pre style="margin: 0;">-<span id="LC424" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- expr_wrap2 :: <span class="idiff left right">overall_</span>pat_ty "->" inf_arg_ty</span></span>
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<pre style="margin: 0;">+<span id="LC422" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">expr_wrap2</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">tc_sub_type</span> <span class="n" style="color: #333;">penv</span> <span class="n" style="color: #333;">pat_ty</span> <span class="n" style="color: #333;">inf_arg_ty</span></span>
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<pre style="margin: 0;">+<span id="LC423" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- expr_wrap2 :: pat_ty "->" inf_arg_ty</span></span>
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<pre style="margin: 0;"> <span id="LC424" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC425" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- Pattern must have inf_res_ty</span></span>
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<pre style="margin: 0;">-<span id="LC427" 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;">res</span><span class="p">)</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">tc_lpat</span> <span class="n" style="color: #333;"><span class="idiff left">pat</span></span><span class="idiff"> </span><span class="p"><span class="idiff">(</span></span><span class="n" style="color: #333;"><span class="idiff">mkCheckExpType</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">inf_res_ty</span></span><span class="p"><span class="idiff">)</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff right">penv</span></span> <span class="n" style="color: #333;">thing_inside</span></span>
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<pre style="margin: 0;">+<span id="LC426" 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;">res</span><span class="p">)</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">tc_lpat</span> <span class="p"><span class="idiff left">(</span></span><span class="n" style="color: #333;"><span class="idiff">mkCheckExpType</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">inf_res_ty</span></span><span class="p"><span class="idiff">)</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">penv</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff right">pat</span></span> <span class="n" style="color: #333;">thing_inside</span></span>
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<pre style="margin: 0;"> <span id="LC427" class="line" lang="haskell"></span>
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<pre style="margin: 0;">-<span id="LC429" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;"><span class="idiff left">overall_pat_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">readExpType</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff right">overall_</span>pat_ty</span></span>
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<pre style="margin: 0;">+<span id="LC428" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;"><span class="idiff left">pat_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">readExpType</span></span><span class="idiff right"> </span><span class="n" style="color: #333;">pat_ty</span></span>
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<pre style="margin: 0;"> <span id="LC429" class="line" lang="haskell"> <span class="p">;</span> <span class="kr" style="font-weight: 600;">let</span> <span class="n" style="color: #333;">expr_wrap2'</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">mkWpFun</span> <span class="n" style="color: #333;">expr_wrap2</span> <span class="n" style="color: #333;">idHsWrapper</span></span>
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<pre style="margin: 0;">-<span id="LC431" class="line" lang="haskell"> <span class="n" style="color: #333;"><span class="idiff left right">overall_</span>pat_ty</span> <span class="n" style="color: #333;">inf_res_ty</span> <span class="n" style="color: #333;">doc</span></span>
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<pre style="margin: 0;">+<span id="LC430" class="line" lang="haskell"> <span class="n" style="color: #333;">pat_ty</span> <span class="n" style="color: #333;">inf_res_ty</span> <span class="n" style="color: #333;">doc</span></span>
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<pre style="margin: 0;"> <span id="LC431" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- expr_wrap2' :: (inf_arg_ty -> inf_res_ty) "->"</span></span>
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<pre style="margin: 0;">-<span id="LC433" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- (<span class="idiff left right">overall_</span>pat_ty -> inf_res_ty)</span></span>
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<pre style="margin: 0;">+<span id="LC432" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- (pat_ty -> inf_res_ty)</span></span>
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<pre style="margin: 0;"> <span id="LC433" class="line" lang="haskell"> <span class="n" style="color: #333;">expr_wrap</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">expr_wrap2'</span> <span class="o" style="font-weight: 600;"><.></span> <span class="n" style="color: #333;">expr_wrap1</span></span>
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<pre style="margin: 0;"> <span id="LC434" 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 checking the view pattern function:"</span> <span class="o" style="font-weight: 600;"><+></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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<pre style="margin: 0;">-<span id="LC436" 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;">ViewPat</span> <span class="n" style="color: #333;"><span class="idiff left right">overall_</span>pat_ty</span> <span class="p">(</span><span class="n" style="color: #333;">mkLHsWrap</span> <span class="n" style="color: #333;">expr_wrap</span> <span class="n" style="color: #333;">expr'</span><span class="p">)</span> <span class="n" style="color: #333;">pat'</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="LC435" 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;">ViewPat</span> <span class="n" style="color: #333;">pat_ty</span> <span class="p">(</span><span class="n" style="color: #333;">mkLHsWrap</span> <span class="n" style="color: #333;">expr_wrap</span> <span class="n" style="color: #333;">expr'</span><span class="p">)</span> <span class="n" style="color: #333;">pat'</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="LC436" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC437" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- Type signatures in patterns</span></span>
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<pre style="margin: 0;"> <span id="LC438" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- See Note [Pattern coercions] below</span></span>
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<pre style="margin: 0;">-<span id="LC440" class="line" lang="haskell"><span class="n" style="color: #333;"><span class="idiff left">tc_pat</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">penv</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">SigPat</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">pat</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">sig_ty</span></span><span class="p"><span class="idiff">)</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">pat_ty</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff right">thing_inside</span></span></span>
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<pre style="margin: 0;">-<span id="LC441" 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 right">do</span></span> <span class="p">{</span> <span class="p">(</span><span class="n" style="color: #333;">inner_ty</span><span class="p">,</span> <span class="n" style="color: #333;">tv_binds</span><span class="p">,</span> <span class="n" style="color: #333;">wcs</span><span class="p">,</span> <span class="n" style="color: #333;">wrap</span><span class="p">)</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">tcPatSig</span> <span class="p">(</span><span class="n" style="color: #333;">inPatBind</span> <span class="n" style="color: #333;">penv</span><span class="p">)</span></span>
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<pre style="margin: 0;">+<span id="LC439" class="line" lang="haskell"><span class="idiff left"> </span><span class="kt" style="color: #458; font-weight: 600;"><span class="idiff">SigPat</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">pat</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">sig_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="kr" style="font-weight: 600;"><span class="idiff right">do</span></span></span>
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<pre style="margin: 0;">+<span id="LC440" class="line" lang="haskell"> <span class="idiff left right"> </span> <span class="p">{</span> <span class="p">(</span><span class="n" style="color: #333;">inner_ty</span><span class="p">,</span> <span class="n" style="color: #333;">tv_binds</span><span class="p">,</span> <span class="n" style="color: #333;">wcs</span><span class="p">,</span> <span class="n" style="color: #333;">wrap</span><span class="p">)</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">tcPatSig</span> <span class="p">(</span><span class="n" style="color: #333;">inPatBind</span> <span class="n" style="color: #333;">penv</span><span class="p">)</span></span>
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<pre style="margin: 0;"> <span id="LC441" class="line" lang="haskell"> <span class="n" style="color: #333;">sig_ty</span> <span class="n" style="color: #333;">pat_ty</span></span>
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<pre style="margin: 0;"> <span id="LC442" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- Using tcExtendNameTyVarEnv is appropriate here</span></span>
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<pre style="margin: 0;"> <span id="LC443" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- because we're not really bringing fresh tyvars into scope.</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">@@ -446,35 +445,35 @@ tc_pat penv (SigPat _ pat sig_ty) pat_ty thing_inside</td>
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<pre style="margin: 0;"> <span id="LC445" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- from an outer scope to mention one of these tyvars in its kind.</span></span>
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<pre style="margin: 0;"> <span id="LC446" 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;">res</span><span class="p">)</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">tcExtendNameTyVarEnv</span> <span class="n" style="color: #333;">wcs</span> <span class="o" style="font-weight: 600;">$</span></span>
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<pre style="margin: 0;"> <span id="LC447" class="line" lang="haskell"> <span class="n" style="color: #333;">tcExtendNameTyVarEnv</span> <span class="n" style="color: #333;">tv_binds</span> <span class="o" style="font-weight: 600;">$</span></span>
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<pre style="margin: 0;">-<span id="LC449" class="line" lang="haskell"> <span class="n" style="color: #333;">tc_lpat</span> <span class="n" style="color: #333;"><span class="idiff left">pat</span></span><span class="idiff"> </span><span class="p"><span class="idiff">(</span></span><span class="n" style="color: #333;"><span class="idiff">mkCheckExpType</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">inner_ty</span></span><span class="p"><span class="idiff">)</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff right">penv</span></span> <span class="n" style="color: #333;">thing_inside</span></span>
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<pre style="margin: 0;">+<span id="LC448" class="line" lang="haskell"> <span class="n" style="color: #333;">tc_lpat</span> <span class="p"><span class="idiff left">(</span></span><span class="n" style="color: #333;"><span class="idiff">mkCheckExpType</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">inner_ty</span></span><span class="p"><span class="idiff">)</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">penv</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff right">pat</span></span> <span class="n" style="color: #333;">thing_inside</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;">pat_ty</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">readExpType</span> <span class="n" style="color: #333;">pat_ty</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;">return</span> <span class="p">(</span><span class="n" style="color: #333;">mkHsWrapPat</span> <span class="n" style="color: #333;">wrap</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">SigPat</span> <span class="n" style="color: #333;">inner_ty</span> <span class="n" style="color: #333;">pat'</span> <span class="n" style="color: #333;">sig_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;">res</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="c1" style="color: #998; font-style: italic;">------------------------</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;">-- Lists, tuples, arrays</span></span>
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<pre style="margin: 0;">-<span id="LC455" class="line" lang="haskell"><span class="n" style="color: #333;"><span class="idiff left">tc_pat</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">penv</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">ListPat</span></span><span class="idiff"> </span><span class="kt" style="color: #458; font-weight: 600;"><span class="idiff">Nothing</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">pats</span></span><span class="p"><span class="idiff">)</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">pat_ty</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff right">thing_inside</span></span></span>
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<pre style="margin: 0;">-<span id="LC456" 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 right">do</span></span> <span class="p">{</span> <span class="p">(</span><span class="n" style="color: #333;">coi</span><span class="p">,</span> <span class="n" style="color: #333;">elt_ty</span><span class="p">)</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">matchExpectedPatTy</span> <span class="n" style="color: #333;">matchExpectedListTy</span> <span class="n" style="color: #333;">penv</span> <span class="n" style="color: #333;">pat_ty</span></span>
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<pre style="margin: 0;">-<span id="LC457" class="line" lang="haskell"> <span class="p">;</span> <span class="p">(</span><span class="n" style="color: #333;">pats'</span><span class="p">,</span> <span class="n" style="color: #333;">res</span><span class="p">)</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">tcMultiple</span> <span class="p">(</span><span class="nf" style="color: #900; font-weight: 600;"><span class="idiff left">\</span></span><span class="n" style="color: #333;"><span class="idiff">p</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">tc_lpat</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">p</span></span><span class="idiff"> </span><span class="p"><span class="idiff">(</span></span><span class="n" style="color: #333;"><span class="idiff">mkCheckExpType</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">elt_ty</span></span><span class="p"><span class="idiff right">)</span>)</span></span>
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<pre style="margin: 0;">-<span id="LC458" class="line" lang="haskell"> <span class="n" style="color: #333;">p<span class="idiff left">ats</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff right">penv</span></span> <span class="n" style="color: #333;">thing_inside</span></span>
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<pre style="margin: 0;">+<span id="LC454" class="line" lang="haskell"><span class="idiff left"> </span><span class="kt" style="color: #458; font-weight: 600;"><span class="idiff">ListPat</span></span><span class="idiff"> </span><span class="kt" style="color: #458; font-weight: 600;"><span class="idiff">Nothing</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">pats</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 right">do</span></span></span>
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<pre style="margin: 0;">+<span id="LC455" class="line" lang="haskell"> <span class="idiff left right"> </span> <span class="p">{</span> <span class="p">(</span><span class="n" style="color: #333;">coi</span><span class="p">,</span> <span class="n" style="color: #333;">elt_ty</span><span class="p">)</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">matchExpectedPatTy</span> <span class="n" style="color: #333;">matchExpectedListTy</span> <span class="n" style="color: #333;">penv</span> <span class="n" style="color: #333;">pat_ty</span></span>
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<pre style="margin: 0;">+<span id="LC456" class="line" lang="haskell"> <span class="p">;</span> <span class="p">(</span><span class="n" style="color: #333;">pats'</span><span class="p">,</span> <span class="n" style="color: #333;">res</span><span class="p">)</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">tcMultiple</span> <span class="p">(</span><span class="n" style="color: #333;"><span class="idiff left">tc_lpat</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">mkCheckExpType</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff right">elt_ty</span></span><span class="p">)</span></span>
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<pre style="margin: 0;">+<span id="LC457" class="line" lang="haskell"> <span class="n" style="color: #333;">p<span class="idiff left">env</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff right">pats</span></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="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;">readExpType</span> <span class="n" style="color: #333;">pat_ty</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;">return</span> <span class="p">(</span><span class="n" style="color: #333;">mkHsWrapPat</span> <span class="n" style="color: #333;">coi</span></span>
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<pre style="margin: 0;"> <span id="LC460" class="line" lang="haskell"> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">ListPat</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">ListPatTc</span> <span class="n" style="color: #333;">elt_ty</span> <span class="kt" style="color: #458; font-weight: 600;">Nothing</span><span class="p">)</span> <span class="n" style="color: #333;">pats'</span><span class="p">)</span> <span class="n" style="color: #333;">pat_ty</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="LC461" class="line" lang="haskell"><span class="p">}</span></span>
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<pre style="margin: 0;"> <span id="LC462" class="line" lang="haskell"></span>
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<pre style="margin: 0;">-<span id="LC464" class="line" lang="haskell"><span class="n" style="color: #333;"><span class="idiff left">tc_pat</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">penv</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">ListPat</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">Just</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">e</span></span><span class="p"><span class="idiff">)</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">pats</span></span><span class="p"><span class="idiff">)</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">pat_ty</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff right">thing_inside</span></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 class="idiff left">=</span></span><span class="idiff"> </span><span class="kr" style="font-weight: 600;"><span class="idiff right">do</span></span> <span class="p">{</span> <span class="n" style="color: #333;">tau_pat_ty</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">expTypeToType</span> <span class="n" style="color: #333;">pat_ty</span></span>
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<pre style="margin: 0;">+<span id="LC463" class="line" lang="haskell"><span class="idiff left"> </span><span class="kt" style="color: #458; font-weight: 600;"><span class="idiff">ListPat</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">Just</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">e</span></span><span class="p"><span class="idiff">)</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">pats</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 right">do</span></span></span>
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<pre style="margin: 0;">+<span id="LC464" class="line" lang="haskell"> <span class="idiff left right"> </span> <span class="p">{</span> <span class="n" style="color: #333;">tau_pat_ty</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">expTypeToType</span> <span class="n" style="color: #333;">pat_ty</span></span>
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<pre style="margin: 0;"> <span id="LC465" class="line" lang="haskell"> <span class="p">;</span> <span class="p">((</span><span class="n" style="color: #333;">pats'</span><span class="p">,</span> <span class="n" style="color: #333;">res</span><span class="p">,</span> <span class="n" style="color: #333;">elt_ty</span><span class="p">),</span> <span class="n" style="color: #333;">e'</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="n" style="color: #333;">tcSyntaxOpGen</span> <span class="kt" style="color: #458; font-weight: 600;">ListOrigin</span> <span class="n" style="color: #333;">e</span> <span class="p">[</span><span class="kt" style="color: #458; font-weight: 600;">SynType</span> <span class="p">(</span><span class="n" style="color: #333;">mkCheckExpType</span> <span class="n" style="color: #333;">tau_pat_ty</span><span class="p">)]</span></span>
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<pre style="margin: 0;"> <span id="LC467" class="line" lang="haskell"> <span class="kt" style="color: #458; font-weight: 600;">SynList</span> <span class="o" style="font-weight: 600;">$</span></span>
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<pre style="margin: 0;"> <span id="LC468" class="line" lang="haskell"> <span class="nf" style="color: #900; font-weight: 600;">\</span> <span class="p">[</span><span class="n" style="color: #333;">elt_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="LC470" 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;">pats'</span><span class="p">,</span> <span class="n" style="color: #333;">res</span><span class="p">)</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">tcMultiple</span> <span class="p">(</span><span class="nf" style="color: #900; font-weight: 600;"><span class="idiff left">\</span></span><span class="n" style="color: #333;"><span class="idiff">p</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">tc_lpat</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">p</span></span><span class="idiff"> </span><span class="p"><span class="idiff">(</span></span><span class="n" style="color: #333;"><span class="idiff">mkCheckExpType</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">elt_ty</span></span><span class="p"><span class="idiff right">)</span>)</span></span>
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<pre style="margin: 0;">-<span id="LC471" class="line" lang="haskell"> <span class="n" style="color: #333;">p<span class="idiff left">ats</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff right">penv</span></span> <span class="n" style="color: #333;">thing_inside</span></span>
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<pre style="margin: 0;">+<span id="LC469" 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;">pats'</span><span class="p">,</span> <span class="n" style="color: #333;">res</span><span class="p">)</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">tcMultiple</span> <span class="p">(</span><span class="n" style="color: #333;"><span class="idiff left">tc_lpat</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">mkCheckExpType</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff right">elt_ty</span></span><span class="p">)</span></span>
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<pre style="margin: 0;">+<span id="LC470" class="line" lang="haskell"> <span class="n" style="color: #333;">p<span class="idiff left">env</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff right">pats</span></span> <span class="n" style="color: #333;">thing_inside</span></span>
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<pre style="margin: 0;"> <span id="LC471" 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;">pats'</span><span class="p">,</span> <span class="n" style="color: #333;">res</span><span class="p">,</span> <span class="n" style="color: #333;">elt_ty</span><span class="p">)</span> <span class="p">}</span></span>
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<pre style="margin: 0;"> <span id="LC472" 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;">ListPat</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">ListPatTc</span> <span class="n" style="color: #333;">elt_ty</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;">tau_pat_ty</span><span class="p">,</span><span class="n" style="color: #333;">e'</span><span class="p">)))</span> <span class="n" style="color: #333;">pats'</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="LC473" class="line" lang="haskell"><span class="p">}</span></span>
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<pre style="margin: 0;"> <span id="LC474" class="line" lang="haskell"></span>
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<pre style="margin: 0;">-<span id="LC476" class="line" lang="haskell"><span class="n" style="color: #333;"><span class="idiff left">tc_pat</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">penv</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">TuplePat</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">pats</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">boxity</span></span><span class="p"><span class="idiff">)</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">pat_ty</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff right">thing_inside</span></span></span>
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<pre style="margin: 0;">-<span id="LC477" 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 right">do</span></span> <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;">pats</span></span>
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<pre style="margin: 0;">+<span id="LC475" class="line" lang="haskell"><span class="idiff left"> </span><span class="kt" style="color: #458; font-weight: 600;"><span class="idiff">TuplePat</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">pats</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">boxity</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 right">do</span></span></span>
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<pre style="margin: 0;">+<span id="LC476" class="line" lang="haskell"> <span class="idiff left right"> </span> <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;">pats</span></span>
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<pre style="margin: 0;"> <span id="LC477" class="line" lang="haskell"> <span class="n" style="color: #333;">tc</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">tupleTyCon</span> <span class="n" style="color: #333;">boxity</span> <span class="n" style="color: #333;">arity</span></span>
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<pre style="margin: 0;"> <span id="LC478" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- NB: tupleTyCon does not flatten 1-tuples</span></span>
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<pre style="margin: 0;"> <span id="LC479" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- See Note [Don't flatten tuples from HsSyn] in GHC.Core.Make</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">@@ -484,8 +483,8 @@ tc_pat penv (TuplePat _ pats boxity) pat_ty thing_inside</td>
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<pre style="margin: 0;"> <span id="LC483" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- See Note [Unboxed tuple RuntimeRep vars] in GHC.Core.TyCon</span></span>
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<pre style="margin: 0;"> <span id="LC484" class="line" lang="haskell"> <span class="p">;</span> <span class="kr" style="font-weight: 600;">let</span> <span class="n" style="color: #333;">con_arg_tys</span> <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">case</span> <span class="n" style="color: #333;">boxity</span> <span class="kr" style="font-weight: 600;">of</span> <span class="kt" style="color: #458; font-weight: 600;">Unboxed</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">drop</span> <span class="n" style="color: #333;">arity</span> <span class="n" style="color: #333;">arg_tys</span></span>
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<pre style="margin: 0;"> <span id="LC485" class="line" lang="haskell"> <span class="kt" style="color: #458; font-weight: 600;">Boxed</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">arg_tys</span></span>
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<pre style="margin: 0;">-<span id="LC487" class="line" lang="haskell"> <span class="p">;</span> <span class="p">(</span><span class="n" style="color: #333;">pats'</span><span class="p">,</span> <span class="n" style="color: #333;">res</span><span class="p">)</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">tc_lpats</span> <span class="n" style="color: #333;"><span class="idiff left">penv</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">pats</span></span><span class="idiff right"> </span><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;">con_arg_tys</span><span class="p">)</span></span>
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<pre style="margin: 0;">-<span id="LC488" class="line" lang="haskell"> <span class="n" style="color: #333;">thing_inside</span></span>
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<pre style="margin: 0;">+<span id="LC486" class="line" lang="haskell"> <span class="p">;</span> <span class="p">(</span><span class="n" style="color: #333;">pats'</span><span class="p">,</span> <span class="n" style="color: #333;">res</span><span class="p">)</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">tc_lpats</span> <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;">con_arg_tys</span><span class="p">)</span></span>
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<pre style="margin: 0;">+<span id="LC487" class="line" lang="haskell"> <span class="n" style="color: #333;"><span class="idiff left">penv</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">pats</span></span><span class="idiff right"> </span><span class="n" style="color: #333;">thing_inside</span></span>
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<pre style="margin: 0;"> <span id="LC488" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC489" 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>
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<pre style="margin: 0;"> <span id="LC490" 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">@@ -506,14 +505,14 @@ tc_pat penv (TuplePat _ pats boxity) pat_ty thing_inside</td>
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<pre style="margin: 0;"> <span id="LC505" class="line" lang="haskell"> <span class="n" style="color: #333;">return</span> <span class="p">(</span><span class="n" style="color: #333;">mkHsWrapPat</span> <span class="n" style="color: #333;">coi</span> <span class="n" style="color: #333;">possibly_mangled_result</span> <span class="n" style="color: #333;">pat_ty</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="LC506" class="line" lang="haskell"> <span class="p">}</span></span>
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<pre style="margin: 0;"> <span id="LC507" class="line" lang="haskell"></span>
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<pre style="margin: 0;">-<span id="LC509" class="line" lang="haskell"><span class="n" style="color: #333;"><span class="idiff left">tc_pat</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">penv</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">SumPat</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">pat</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">alt</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">arity</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">pat_ty</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff right">thing_inside</span></span></span>
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<pre style="margin: 0;">-<span id="LC510" 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 right">do</span></span> <span class="p">{</span> <span class="kr" style="font-weight: 600;">let</span> <span class="n" style="color: #333;">tc</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">sumTyCon</span> <span class="n" style="color: #333;">arity</span></span>
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<pre style="margin: 0;">+<span id="LC508" class="line" lang="haskell"><span class="idiff left"> </span><span class="kt" style="color: #458; font-weight: 600;"><span class="idiff">SumPat</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">pat</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">alt</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">arity</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 right">do</span></span></span>
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<pre style="margin: 0;">+<span id="LC509" class="line" lang="haskell"> <span class="idiff left right"> </span> <span class="p">{</span> <span class="kr" style="font-weight: 600;">let</span> <span class="n" style="color: #333;">tc</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">sumTyCon</span> <span class="n" style="color: #333;">arity</span></span>
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<pre style="margin: 0;"> <span id="LC510" class="line" lang="haskell"> <span class="p">;</span> <span class="p">(</span><span class="n" style="color: #333;">coi</span><span class="p">,</span> <span class="n" style="color: #333;">arg_tys</span><span class="p">)</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">matchExpectedPatTy</span> <span class="p">(</span><span class="n" style="color: #333;">matchExpectedTyConApp</span> <span class="n" style="color: #333;">tc</span><span class="p">)</span></span>
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<pre style="margin: 0;"> <span id="LC511" class="line" lang="haskell"> <span class="n" style="color: #333;">penv</span> <span class="n" style="color: #333;">pat_ty</span></span>
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<pre style="margin: 0;"> <span id="LC512" class="line" lang="haskell"> <span class="p">;</span> <span class="c1" style="color: #998; font-style: italic;">-- Drop levity vars, we don't care about them here</span></span>
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<pre style="margin: 0;"> <span id="LC513" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">let</span> <span class="n" style="color: #333;">con_arg_tys</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">drop</span> <span class="n" style="color: #333;">arity</span> <span class="n" style="color: #333;">arg_tys</span></span>
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<pre style="margin: 0;">-<span id="LC515" 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;">res</span><span class="p">)</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">tc_lpat</span> <span class="n" style="color: #333;"><span class="idiff left">pat</span></span><span class="idiff right"> </span><span class="p">(</span><span class="n" style="color: #333;">mkCheckExpType</span> <span class="p">(</span><span class="n" style="color: #333;">con_arg_tys</span> <span class="p">`</span><span class="n" style="color: #333;">getNth</span><span class="p">`</span> <span class="p">(</span><span class="n" style="color: #333;">alt</span> <span class="o" style="font-weight: 600;">-</span> <span class="mi" style="color: #099;">1</span><span class="p">)))</span></span>
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<pre style="margin: 0;">-<span id="LC516" class="line" lang="haskell"> <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="LC514" 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;">res</span><span class="p">)</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">tc_lpat</span> <span class="p">(</span><span class="n" style="color: #333;">mkCheckExpType</span> <span class="p">(</span><span class="n" style="color: #333;">con_arg_tys</span> <span class="p">`</span><span class="n" style="color: #333;">getNth</span><span class="p">`</span> <span class="p">(</span><span class="n" style="color: #333;">alt</span> <span class="o" style="font-weight: 600;">-</span> <span class="mi" style="color: #099;">1</span><span class="p">)))</span></span>
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<pre style="margin: 0;">+<span id="LC515" class="line" lang="haskell"> <span class="n" style="color: #333;">penv</span> <span class="n" style="color: #333;"><span class="idiff left">pat</span></span><span class="idiff right"> </span><span class="n" style="color: #333;">thing_inside</span></span>
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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;">pat_ty</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">readExpType</span> <span class="n" style="color: #333;">pat_ty</span></span>
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<pre style="margin: 0;"> <span id="LC517" 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;">mkHsWrapPat</span> <span class="n" style="color: #333;">coi</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">SumPat</span> <span class="n" style="color: #333;">con_arg_tys</span> <span class="n" style="color: #333;">pat'</span> <span class="n" style="color: #333;">alt</span> <span class="n" style="color: #333;">arity</span><span class="p">)</span> <span class="n" style="color: #333;">pat_ty</span></span>
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<pre style="margin: 0;"> <span id="LC518" class="line" lang="haskell"> <span class="p">,</span> <span class="n" style="color: #333;">res</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">@@ -521,13 +520,13 @@ tc_pat penv (SumPat _ pat alt arity ) pat_ty thing_inside</td>
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<pre style="margin: 0;"> <span id="LC520" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC521" 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="LC522" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- Data constructors</span></span>
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<pre style="margin: 0;">-<span id="LC524" class="line" lang="haskell"><span class="n" style="color: #333;"><span class="idiff left">tc_pat</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">penv</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">ConPat</span></span><span class="idiff"> </span><span class="kt" style="color: #458; font-weight: 600;"><span class="idiff">NoExtField</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">con</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">arg_pats</span></span><span class="p"><span class="idiff">)</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">pat_ty</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff right">thing_inside</span></span></span>
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<pre style="margin: 0;">-<span id="LC525" class="line" lang="haskell"> <span class="o" style="font-weight: 600;"><span class="idiff left right">=</span></span> <span class="n" style="color: #333;">tcConPat</span> <span class="n" style="color: #333;">penv</span> <span class="n" style="color: #333;">con</span> <span class="n" style="color: #333;">pat_ty</span> <span class="n" style="color: #333;">arg_pats</span> <span class="n" style="color: #333;">thing_inside</span></span>
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<pre style="margin: 0;">+<span id="LC523" class="line" lang="haskell"><span class="idiff left"> </span><span class="kt" style="color: #458; font-weight: 600;"><span class="idiff">ConPat</span></span><span class="idiff"> </span><span class="kt" style="color: #458; font-weight: 600;"><span class="idiff">NoExtField</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">con</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">arg_pats</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="LC524" class="line" lang="haskell"> <span class="idiff left right"> </span> <span class="n" style="color: #333;">tcConPat</span> <span class="n" style="color: #333;">penv</span> <span class="n" style="color: #333;">con</span> <span class="n" style="color: #333;">pat_ty</span> <span class="n" style="color: #333;">arg_pats</span> <span class="n" style="color: #333;">thing_inside</span></span>
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<pre style="margin: 0;"> <span id="LC525" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC526" 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="LC527" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- Literal patterns</span></span>
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<pre style="margin: 0;">-<span id="LC529" class="line" lang="haskell"><span class="n" style="color: #333;"><span class="idiff left">tc_pat</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">penv</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">LitPat</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">x</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">simple_lit</span></span><span class="p"><span class="idiff">)</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">pat_ty</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff right">thing_inside</span></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 class="idiff left">=</span></span><span class="idiff"> </span><span class="kr" style="font-weight: 600;"><span class="idiff right">do</span></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;">simple_lit</span></span>
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<pre style="margin: 0;">+<span id="LC528" class="line" lang="haskell"><span class="idiff left"> </span><span class="kt" style="color: #458; font-weight: 600;"><span class="idiff">LitPat</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">x</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">simple_lit</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 right">do</span></span></span>
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<pre style="margin: 0;">+<span id="LC529" class="line" lang="haskell"> <span class="idiff left right"> </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;">simple_lit</span></span>
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<pre style="margin: 0;"> <span id="LC530" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">wrap</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">tc_sub_type</span> <span class="n" style="color: #333;">penv</span> <span class="n" style="color: #333;">pat_ty</span> <span class="n" style="color: #333;">lit_ty</span></span>
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<pre style="margin: 0;"> <span id="LC531" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">res</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">thing_inside</span></span>
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<pre style="margin: 0;"> <span id="LC532" class="line" lang="haskell"> <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;">readExpType</span> <span class="n" style="color: #333;">pat_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">@@ -552,8 +551,8 @@ tc_pat penv (LitPat x simple_lit) pat_ty thing_inside</td>
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<pre style="margin: 0;"> <span id="LC551" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- where lit_ty is the type of the overloaded literal 5.</span></span>
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<pre style="margin: 0;"> <span id="LC552" 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="LC553" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- When there is no negation, neg_lit_ty and lit_ty are the same</span></span>
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<pre style="margin: 0;">-<span id="LC555" class="line" lang="haskell"><span class="n" style="color: #333;"><span class="idiff left">tc_pat</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">NPat</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">L</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">over_lit</span></span><span class="p"><span class="idiff">)</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">mb_neg</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">eq</span></span><span class="p"><span class="idiff">)</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">pat_ty</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff right">thing_inside</span></span></span>
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<pre style="margin: 0;">-<span id="LC556" 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 right">do</span></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="kt" style="color: #458; font-weight: 600;">LiteralOrigin</span> <span class="n" style="color: #333;">over_lit</span></span>
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<pre style="margin: 0;">+<span id="LC554" class="line" lang="haskell"><span class="idiff left"> </span><span class="kt" style="color: #458; font-weight: 600;"><span class="idiff">NPat</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">L</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">over_lit</span></span><span class="p"><span class="idiff">)</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">mb_neg</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">eq</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 right">do</span></span></span>
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<pre style="margin: 0;">+<span id="LC555" class="line" lang="haskell"> <span class="idiff left right"> </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="kt" style="color: #458; font-weight: 600;">LiteralOrigin</span> <span class="n" style="color: #333;">over_lit</span></span>
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<pre style="margin: 0;"> <span id="LC556" class="line" lang="haskell"> <span class="p">;</span> <span class="p">((</span><span class="n" style="color: #333;">lit'</span><span class="p">,</span> <span class="n" style="color: #333;">mb_neg'</span><span class="p">),</span> <span class="n" style="color: #333;">eq'</span><span class="p">)</span></span>
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<pre style="margin: 0;"> <span id="LC557" class="line" lang="haskell"> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">tcSyntaxOp</span> <span class="n" style="color: #333;">orig</span> <span class="n" style="color: #333;">eq</span> <span class="p">[</span><span class="kt" style="color: #458; font-weight: 600;">SynType</span> <span class="n" style="color: #333;">pat_ty</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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<pre style="margin: 0;"> <span id="LC558" class="line" lang="haskell"> <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 class="o" style="font-weight: 600;">$</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">@@ -601,10 +600,9 @@ AST is used for the subtraction operation.</td>
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<pre style="margin: 0;"> <span id="LC600" 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="LC601" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC602" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- See Note [NPlusK patterns]</span></span>
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<pre style="margin: 0;">-<span id="LC604" 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;">NPlusKPat</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;">nm_loc</span> <span class="n" style="color: #333;">name</span><span class="p">)</span></span>
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<pre style="margin: 0;">-<span id="LC605" class="line" lang="haskell"> <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;">lit</span><span class="p">)</span> <span class="kr" style="font-weight: 600;">_</span> <span class="n" style="color: #333;">ge</span> <span class="n" style="color: #333;">minus</span><span class="p">)</span> <span class="n" style="color: #333;">pat_ty</span></span>
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<pre style="margin: 0;">-<span id="LC606" class="line" lang="haskell"> <span class="n" style="color: #333;">thing_inside</span></span>
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<pre style="margin: 0;">-<span id="LC607" 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;">expTypeToType</span> <span class="n" style="color: #333;">pat_ty</span></span>
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<pre style="margin: 0;">+<span id="LC603" class="line" lang="haskell"> <span class="kt" style="color: #458; font-weight: 600;">NPlusKPat</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;">nm_loc</span> <span class="n" style="color: #333;">name</span><span class="p">)</span></span>
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<pre style="margin: 0;">+<span id="LC604" class="line" lang="haskell"> <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;">lit</span><span class="p">)</span> <span class="kr" style="font-weight: 600;">_</span> <span class="n" style="color: #333;">ge</span> <span class="n" style="color: #333;">minus</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="LC605" class="line" lang="haskell"> <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;">expTypeToType</span> <span class="n" style="color: #333;">pat_ty</span></span>
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<pre style="margin: 0;"> <span id="LC606" class="line" lang="haskell"> <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="kt" style="color: #458; font-weight: 600;">LiteralOrigin</span> <span class="n" style="color: #333;">lit</span></span>
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<pre style="margin: 0;"> <span id="LC607" class="line" lang="haskell"> <span class="p">;</span> <span class="p">(</span><span class="n" style="color: #333;">lit1'</span><span class="p">,</span> <span class="n" style="color: #333;">ge'</span><span class="p">)</span></span>
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<pre style="margin: 0;"> <span id="LC608" class="line" lang="haskell"> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">tcSyntaxOp</span> <span class="n" style="color: #333;">orig</span> <span class="n" style="color: #333;">ge</span> <span class="p">[</span><span class="n" style="color: #333;">synKnownType</span> <span class="n" style="color: #333;">pat_ty</span><span class="p">,</span> <span class="kt" style="color: #458; font-weight: 600;">SynRho</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">@@ -650,12 +648,11 @@ tc_pat penv (NPlusKPat _ (L nm_loc name)</td>
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<pre style="margin: 0;"> <span id="LC648" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- Here we get rid of it and add the finalizers to the global environment.</span></span>
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<pre style="margin: 0;"> <span id="LC649" 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="LC650" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- See Note [Delaying modFinalizers in untyped splices] in GHC.Rename.Splice.</span></span>
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<pre style="margin: 0;">-<span id="LC653" 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;">SplicePat</span> <span class="kr" style="font-weight: 600;">_</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">HsSpliced</span> <span class="kr" style="font-weight: 600;">_</span> <span class="n" style="color: #333;">mod_finalizers</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">HsSplicedPat</span> <span class="n" style="color: #333;">pat</span><span class="p">)))</span></span>
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<pre style="margin: 0;">-<span id="LC654" class="line" lang="haskell"> <span class="n" style="color: #333;">pat_ty</span> <span class="n" style="color: #333;">thing_inside</span></span>
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<pre style="margin: 0;">-<span id="LC655" 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;">addModFinalizersWithLclEnv</span> <span class="n" style="color: #333;">mod_finalizers</span></span>
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<pre style="margin: 0;">-<span id="LC656" class="line" lang="haskell"> <span class="n" style="color: #333;">tc_pat</span> <span class="n" style="color: #333;">penv</span> <span class="n" style="color: #333;">pat</span> <span class="n" style="color: #333;">pat_ty</span> <span class="n" style="color: #333;">thing_inside</span></span>
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<pre style="margin: 0;">-<span id="LC657" class="line" lang="haskell"></span>
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<pre style="margin: 0;">-<span id="LC658" class="line" lang="haskell"><span class="n" style="color: #333;">tc_pat</span> <span class="kr" style="font-weight: 600;">_</span> <span class="n" style="color: #333;">_other_pat</span> <span class="kr" 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;">panic</span> <span class="s" style="color: #d14;">"tc_pat"</span> <span class="c1" style="color: #998; font-style: italic;">-- ConPatOut, SigPatOut</span></span>
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<pre style="margin: 0;">+<span id="LC651" class="line" lang="haskell"> <span class="kt" style="color: #458; font-weight: 600;">SplicePat</span> <span class="kr" style="font-weight: 600;">_</span> <span class="n" style="color: #333;">splice</span> <span class="o" style="font-weight: 600;">-></span> <span class="kr" style="font-weight: 600;">case</span> <span class="n" style="color: #333;">splice</span> <span class="kr" style="font-weight: 600;">of</span></span>
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<pre style="margin: 0;">+<span id="LC652" class="line" lang="haskell"> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">HsSpliced</span> <span class="kr" style="font-weight: 600;">_</span> <span class="n" style="color: #333;">mod_finalizers</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">HsSplicedPat</span> <span class="n" style="color: #333;">pat</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="LC653" class="line" lang="haskell"> <span class="p">{</span> <span class="n" style="color: #333;">addModFinalizersWithLclEnv</span> <span class="n" style="color: #333;">mod_finalizers</span></span>
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<pre style="margin: 0;">+<span id="LC654" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">tc_pat</span> <span class="n" style="color: #333;">pat_ty</span> <span class="n" style="color: #333;">penv</span> <span class="n" style="color: #333;">pat</span> <span class="n" style="color: #333;">thing_inside</span> <span class="p">}</span></span>
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<pre style="margin: 0;">+<span id="LC655" 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;">panic</span> <span class="s" style="color: #d14;">"invalid splice in splice pat"</span></span>
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<pre style="margin: 0;"> <span id="LC656" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC657" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC658" 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 new_line" data-linenumber="868" 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">@@ -871,7 +868,7 @@ tcDataConPat penv (L con_span con_name) data_con pat_ty</td>
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<pre style="margin: 0;"> <span id="LC868" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">then</span> <span class="kr" style="font-weight: 600;">do</span> <span class="p">{</span> <span class="c1" style="color: #998; font-style: italic;">-- The common case; no class bindings etc</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;">-- (see Note [Arrows and patterns])</span></span>
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<pre style="margin: 0;"> <span id="LC870" class="line" lang="haskell"> <span class="p">(</span><span class="n" style="color: #333;">arg_pats'</span><span class="p">,</span> <span class="n" style="color: #333;">res</span><span class="p">)</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">tcConArgs</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">RealDataCon</span> <span class="n" style="color: #333;">data_con</span><span class="p">)</span> <span class="n" style="color: #333;">arg_tys'</span></span>
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<pre style="margin: 0;">-<span id="LC874" class="line" lang="haskell"> <span class="n" style="color: #333;"><span class="idiff left">arg_pats</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff right">penv</span></span> <span class="n" style="color: #333;">thing_inside</span></span>
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<pre style="margin: 0;">+<span id="LC871" class="line" lang="haskell"> <span class="n" style="color: #333;"><span class="idiff left">penv</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff right">arg_pats</span></span> <span class="n" style="color: #333;">thing_inside</span></span>
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<pre style="margin: 0;"> <span id="LC872" class="line" lang="haskell"> <span class="p">;</span> <span class="kr" style="font-weight: 600;">let</span> <span class="n" style="color: #333;">res_pat</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">ConPat</span> <span class="p">{</span> <span class="n" style="color: #333;">pat_con</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">header</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;">pat_args</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">arg_pats'</span></span>
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<pre style="margin: 0;"> <span id="LC874" class="line" lang="haskell"> <span class="p">,</span> <span class="n" style="color: #333;">pat_con_ext</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">ConPatTc</span></span>
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<td class="diff-line-num unfold js-unfold new_line" data-linenumber="904" 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">@@ -907,7 +904,7 @@ tcDataConPat penv (L con_span con_name) data_con pat_ty</td>
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907
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<pre style="margin: 0;"> <span id="LC904" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">given</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">newEvVars</span> <span class="n" style="color: #333;">theta'</span></span>
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908
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<pre style="margin: 0;"> <span id="LC905" 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="p">(</span><span class="n" style="color: #333;">arg_pats'</span><span class="p">,</span> <span class="n" style="color: #333;">res</span><span class="p">))</span></span>
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909
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906
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<pre style="margin: 0;"> <span id="LC906" 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="n" style="color: #333;">ex_tvs'</span> <span class="n" style="color: #333;">given</span> <span class="o" style="font-weight: 600;">$</span></span>
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<pre style="margin: 0;">-<span id="LC910" class="line" lang="haskell"> <span class="n" style="color: #333;">tcConArgs</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">RealDataCon</span> <span class="n" style="color: #333;">data_con</span><span class="p">)</span> <span class="n" style="color: #333;">arg_tys'</span> <span class="n" style="color: #333;"><span class="idiff left">arg_pats</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff right">penv</span></span> <span class="n" style="color: #333;">thing_inside</span></span>
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<pre style="margin: 0;">+<span id="LC907" class="line" lang="haskell"> <span class="n" style="color: #333;">tcConArgs</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">RealDataCon</span> <span class="n" style="color: #333;">data_con</span><span class="p">)</span> <span class="n" style="color: #333;">arg_tys'</span> <span class="n" style="color: #333;"><span class="idiff left">penv</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff right">arg_pats</span></span> <span class="n" style="color: #333;">thing_inside</span></span>
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908
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<pre style="margin: 0;"> <span id="LC908" class="line" lang="haskell"></span>
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912
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909
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<pre style="margin: 0;"> <span id="LC909" class="line" lang="haskell"> <span class="p">;</span> <span class="kr" style="font-weight: 600;">let</span> <span class="n" style="color: #333;">res_pat</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">ConPat</span></span>
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910
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<pre style="margin: 0;"> <span id="LC910" class="line" lang="haskell"> <span class="p">{</span> <span class="n" style="color: #333;">pat_con</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">header</span></span>
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<td class="diff-line-num unfold js-unfold new_line" data-linenumber="958" 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">@@ -961,7 +958,7 @@ tcPatSynPat penv (L con_span _) pat_syn pat_ty arg_pats thing_inside</td>
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961
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958
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<pre style="margin: 0;"> <span id="LC958" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">traceTc</span> <span class="s" style="color: #d14;">"checkConstraints {"</span> <span class="kt" style="color: #458; font-weight: 600;">Outputable</span><span class="o" style="font-weight: 600;">.</span><span class="n" style="color: #333;">empty</span></span>
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962
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959
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<pre style="margin: 0;"> <span id="LC959" 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="p">(</span><span class="n" style="color: #333;">arg_pats'</span><span class="p">,</span> <span class="n" style="color: #333;">res</span><span class="p">))</span></span>
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963
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960
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<pre style="margin: 0;"> <span id="LC960" 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="n" style="color: #333;">ex_tvs'</span> <span class="n" style="color: #333;">prov_dicts'</span> <span class="o" style="font-weight: 600;">$</span></span>
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964
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<pre style="margin: 0;">-<span id="LC964" class="line" lang="haskell"> <span class="n" style="color: #333;">tcConArgs</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">PatSynCon</span> <span class="n" style="color: #333;">pat_syn</span><span class="p">)</span> <span class="n" style="color: #333;">arg_tys'</span> <span class="n" style="color: #333;"><span class="idiff left">arg_pats</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff right">penv</span></span> <span class="n" style="color: #333;">thing_inside</span></span>
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961
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<pre style="margin: 0;">+<span id="LC961" class="line" lang="haskell"> <span class="n" style="color: #333;">tcConArgs</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">PatSynCon</span> <span class="n" style="color: #333;">pat_syn</span><span class="p">)</span> <span class="n" style="color: #333;">arg_tys'</span> <span class="n" style="color: #333;"><span class="idiff left">penv</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff right">arg_pats</span></span> <span class="n" style="color: #333;">thing_inside</span></span>
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965
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962
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<pre style="margin: 0;"> <span id="LC962" class="line" lang="haskell"></span>
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966
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963
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<pre style="margin: 0;"> <span id="LC963" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">traceTc</span> <span class="s" style="color: #d14;">"checkConstraints }"</span> <span class="p">(</span><span class="n" style="color: #333;">ppr</span> <span class="n" style="color: #333;">ev_binds</span><span class="p">)</span></span>
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967
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964
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<pre style="margin: 0;"> <span id="LC964" class="line" lang="haskell"> <span class="p">;</span> <span class="kr" style="font-weight: 600;">let</span> <span class="n" style="color: #333;">res_pat</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">ConPat</span> <span class="p">{</span> <span class="n" style="color: #333;">pat_con</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;">con_span</span> <span class="o" style="font-weight: 600;">$</span> <span class="kt" style="color: #458; font-weight: 600;">PatSynCon</span> <span class="n" style="color: #333;">pat_syn</span></span>
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<td class="diff-line-num unfold js-unfold new_line" data-linenumber="1067" 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">@@ -1070,46 +1067,48 @@ Suppose (coi, tys) = matchExpectedConType data_tc pat_ty</td>
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1070
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1067
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<pre style="margin: 0;"> <span id="LC1067" class="line" lang="haskell"><span class="n" style="color: #333;">tcConArgs</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">ConLike</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>
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1071
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1068
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<pre style="margin: 0;"> <span id="LC1068" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Checker</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">HsConPatDetails</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;">HsConPatDetails</span> <span class="kt" style="color: #458; font-weight: 600;">GhcTc</span><span class="p">)</span></span>
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1072
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1069
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<pre style="margin: 0;"> <span id="LC1069" class="line" lang="haskell"></span>
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1073
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<pre style="margin: 0;">-<span id="LC1073" class="line" lang="haskell"><span class="n" style="color: #333;">tcConArgs</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;">PrefixCon</span> <span class="n" style="color: #333;">arg_pats</span><span class="p">)</span> <span class="n" style="color: #333;">penv</span> <span class="n" style="color: #333;">thing_inside</span></span>
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1074
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<pre style="margin: 0;">-<span id="LC1074" 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;">checkTc</span> <span class="p">(</span><span class="n" style="color: #333;">con_arity</span> <span class="o" style="font-weight: 600;">==</span> <span class="n" style="color: #333;">no_of_args</span><span class="p">)</span> <span class="c1" style="color: #998; font-style: italic;">-- Check correct arity</span></span>
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<pre style="margin: 0;">+<span id="LC1070" class="line" lang="haskell"><span class="n" style="color: #333;">tcConArgs</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;">penv</span> <span class="n" style="color: #333;">con_args</span> <span class="n" style="color: #333;">thing_inside</span> <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">case</span> <span class="n" style="color: #333;">con_args</span> <span class="kr" style="font-weight: 600;">of</span></span>
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<pre style="margin: 0;">+<span id="LC1071" class="line" lang="haskell"> <span class="kt" style="color: #458; font-weight: 600;">PrefixCon</span> <span class="n" style="color: #333;">arg_pats</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="LC1072" 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;">con_arity</span> <span class="o" style="font-weight: 600;">==</span> <span class="n" style="color: #333;">no_of_args</span><span class="p">)</span> <span class="c1" style="color: #998; font-style: italic;">-- Check correct arity</span></span>
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1075
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1073
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<pre style="margin: 0;"> <span id="LC1073" class="line" lang="haskell"> <span class="p">(</span><span class="n" style="color: #333;">arityErr</span> <span class="p">(</span><span class="n" style="color: #333;">text</span> <span class="s" style="color: #d14;">"constructor"</span><span class="p">)</span> <span class="n" style="color: #333;">con_like</span> <span class="n" style="color: #333;">con_arity</span> <span class="n" style="color: #333;">no_of_args</span><span class="p">)</span></span>
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1076
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<pre style="margin: 0;"> <span id="LC1074" class="line" lang="haskell"> <span class="p">;</span> <span class="kr" style="font-weight: 600;">let</span> <span class="n" style="color: #333;">pats_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;">"tcConArgs"</span> <span class="n" style="color: #333;">arg_pats</span> <span class="n" style="color: #333;">arg_tys</span></span>
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1077
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<pre style="margin: 0;">-<span id="LC1077" class="line" lang="haskell"> <span class="p">;</span> <span class="p">(</span><span class="n" style="color: #333;">arg_pats'</span><span class="p">,</span> <span class="n" style="color: #333;">res</span><span class="p">)</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">tcMultiple</span> <span class="n" style="color: #333;">tcConArg</span> <span class="n" style="color: #333;">pats_w_tys</span></span>
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1078
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<pre style="margin: 0;">-<span id="LC1078" class="line" lang="haskell"> <span class="n" style="color: #333;"><span class="idiff left">penv</span></span><span class="idiff right"> </span><span class="n" style="color: #333;">thing_inside</span></span>
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<pre style="margin: 0;">+<span id="LC1075" class="line" lang="haskell"> <span class="p">;</span> <span class="p">(</span><span class="n" style="color: #333;">arg_pats'</span><span class="p">,</span> <span class="n" style="color: #333;">res</span><span class="p">)</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">tcMultiple</span> <span class="n" style="color: #333;">tcConArg</span> <span class="n" style="color: #333;">p<span class="idiff left">env</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff right">p</span>ats_w_tys</span></span>
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<pre style="margin: 0;">+<span id="LC1076" class="line" lang="haskell"> <span class="n" style="color: #333;">thing_inside</span></span>
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<pre style="margin: 0;"> <span id="LC1077" 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;">PrefixCon</span> <span class="n" style="color: #333;">arg_pats'</span><span class="p">,</span> <span class="n" style="color: #333;">res</span><span class="p">)</span> <span class="p">}</span></span>
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<pre style="margin: 0;">-<span id="LC1080" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">where</span></span>
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1081
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<pre style="margin: 0;">-<span id="LC1081" class="line" lang="haskell"> <span class="n" style="color: #333;">con_arity</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">conLikeArity</span> <span class="n" style="color: #333;">con_like</span></span>
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1082
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<pre style="margin: 0;">-<span id="LC1082" class="line" lang="haskell"> <span class="n" style="color: #333;">no_of_args</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">length</span> <span class="n" style="color: #333;">arg_pats</span></span>
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<pre style="margin: 0;">+<span id="LC1078" class="line" lang="haskell"> <span class="idiff left right"> </span><span class="kr" style="font-weight: 600;">where</span></span>
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<pre style="margin: 0;">+<span id="LC1079" class="line" lang="haskell"> <span class="idiff left right"> </span><span class="n" style="color: #333;">con_arity</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">conLikeArity</span> <span class="n" style="color: #333;">con_like</span></span>
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<pre style="margin: 0;">+<span id="LC1080" class="line" lang="haskell"> <span class="idiff left right"> </span><span class="n" style="color: #333;">no_of_args</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">length</span> <span class="n" style="color: #333;">arg_pats</span></span>
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<pre style="margin: 0;"> <span id="LC1081" class="line" lang="haskell"></span>
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<pre style="margin: 0;">-<span id="LC1084" class="line" lang="haskell"><span class="n" style="color: #333;"><span class="idiff left">tcConArgs</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">con_like</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">arg_tys</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">InfixCon</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">p1</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">p2</span></span><span class="p"><span class="idiff">)</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">penv</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff right">thing_inside</span></span></span>
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1085
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<pre style="margin: 0;">-<span id="LC1085" 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 right">do</span></span> <span class="p">{</span> <span class="n" style="color: #333;">checkTc</span> <span class="p">(</span><span class="n" style="color: #333;">con_arity</span> <span class="o" style="font-weight: 600;">==</span> <span class="mi" style="color: #099;">2</span><span class="p">)</span> <span class="c1" style="color: #998; font-style: italic;">-- Check correct arity</span></span>
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<pre style="margin: 0;">+<span id="LC1082" class="line" lang="haskell"><span class="idiff left"> </span><span class="kt" style="color: #458; font-weight: 600;"><span class="idiff">InfixCon</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">p1</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">p2</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 right">do</span></span></span>
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<pre style="margin: 0;">+<span id="LC1083" class="line" lang="haskell"> <span class="idiff left right"> </span> <span class="p">{</span> <span class="n" style="color: #333;">checkTc</span> <span class="p">(</span><span class="n" style="color: #333;">con_arity</span> <span class="o" style="font-weight: 600;">==</span> <span class="mi" style="color: #099;">2</span><span class="p">)</span> <span class="c1" style="color: #998; font-style: italic;">-- Check correct arity</span></span>
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<pre style="margin: 0;"> <span id="LC1084" class="line" lang="haskell"> <span class="p">(</span><span class="n" style="color: #333;">arityErr</span> <span class="p">(</span><span class="n" style="color: #333;">text</span> <span class="s" style="color: #d14;">"constructor"</span><span class="p">)</span> <span class="n" style="color: #333;">con_like</span> <span class="n" style="color: #333;">con_arity</span> <span class="mi" style="color: #099;">2</span><span class="p">)</span></span>
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<pre style="margin: 0;"> <span id="LC1085" 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;">arg_ty1</span><span class="p">,</span><span class="n" style="color: #333;">arg_ty2</span><span class="p">]</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">arg_tys</span> <span class="c1" style="color: #998; font-style: italic;">-- This can't fail after the arity check</span></span>
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<pre style="margin: 0;">-<span id="LC1088" class="line" lang="haskell"> <span class="p">;</span> <span class="p">([</span><span class="n" style="color: #333;">p1'</span><span class="p">,</span><span class="n" style="color: #333;">p2'</span><span class="p">],</span> <span class="n" style="color: #333;">res</span><span class="p">)</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">tcMultiple</span> <span class="n" style="color: #333;">tcConArg</span> <span class="p">[(</span><span class="n" style="color: #333;">p1</span><span class="p">,</span><span class="n" style="color: #333;">arg_ty1</span><span class="p">),(</span><span class="n" style="color: #333;">p2</span><span class="p">,</span><span class="n" style="color: #333;">arg_ty2</span><span class="p">)]</span></span>
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<pre style="margin: 0;">-<span id="LC1089" class="line" lang="haskell"> <span class="n" style="color: #333;"><span class="idiff left right">penv</span></span> <span class="n" style="color: #333;">thing_inside</span></span>
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<pre style="margin: 0;">+<span id="LC1086" class="line" lang="haskell"> <span class="p">;</span> <span class="p">([</span><span class="n" style="color: #333;">p1'</span><span class="p">,</span><span class="n" style="color: #333;">p2'</span><span class="p">],</span> <span class="n" style="color: #333;">res</span><span class="p">)</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">tcMultiple</span> <span class="n" style="color: #333;">tcConArg</span> <span class="n" style="color: #333;"><span class="idiff left">penv</span></span><span class="idiff right"> </span><span class="p">[(</span><span class="n" style="color: #333;">p1</span><span class="p">,</span><span class="n" style="color: #333;">arg_ty1</span><span class="p">),(</span><span class="n" style="color: #333;">p2</span><span class="p">,</span><span class="n" style="color: #333;">arg_ty2</span><span class="p">)]</span></span>
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<pre style="margin: 0;">+<span id="LC1087" class="line" lang="haskell"> <span class="idiff left right"> </span> <span class="n" style="color: #333;">thing_inside</span></span>
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<pre style="margin: 0;"> <span id="LC1088" 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;">InfixCon</span> <span class="n" style="color: #333;">p1'</span> <span class="n" style="color: #333;">p2'</span><span class="p">,</span> <span class="n" style="color: #333;">res</span><span class="p">)</span> <span class="p">}</span></span>
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<pre style="margin: 0;">-<span id="LC1091" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">where</span></span>
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<pre style="margin: 0;">-<span id="LC1092" class="line" lang="haskell"> <span class="n" style="color: #333;">con_arity</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">conLikeArity</span> <span class="n" style="color: #333;">con_like</span></span>
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<pre style="margin: 0;">+<span id="LC1089" class="line" lang="haskell"> <span class="idiff left right"> </span><span class="kr" style="font-weight: 600;">where</span></span>
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<pre style="margin: 0;">+<span id="LC1090" class="line" lang="haskell"> <span class="idiff left right"> </span><span class="n" style="color: #333;">con_arity</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">conLikeArity</span> <span class="n" style="color: #333;">con_like</span></span>
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<pre style="margin: 0;"> <span id="LC1091" class="line" lang="haskell"></span>
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<pre style="margin: 0;">-<span id="LC1094" class="line" lang="haskell"><span class="n" style="color: #333;"><span class="idiff left">tcConArgs</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">con_like</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">arg_tys</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">RecCon</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">HsRecFields</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">rpats</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">dd</span></span><span class="p"><span class="idiff">))</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">penv</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff right">thing_inside</span></span></span>
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<pre style="margin: 0;">-<span id="LC1095" 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="p"><span class="idiff">(</span></span><span class="n" style="color: #333;"><span class="idiff">rpats'</span></span><span class="p"><span class="idiff">,</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">res</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">tcMultiple</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">tc_field</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">rpats</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff right">penv</span></span> <span class="n" style="color: #333;">thing_inside</span></span>
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<pre style="margin: 0;">+<span id="LC1092" class="line" lang="haskell"><span class="idiff left"> </span><span class="kt" style="color: #458; font-weight: 600;"><span class="idiff">RecCon</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">HsRecFields</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">rpats</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">dd</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="kr" style="font-weight: 600;"><span class="idiff right">do</span></span></span>
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<pre style="margin: 0;">+<span id="LC1093" class="line" lang="haskell"> <span class="idiff left"> </span><span class="p"><span class="idiff">{</span></span><span class="idiff"> </span><span class="p"><span class="idiff">(</span></span><span class="n" style="color: #333;"><span class="idiff">rpats'</span></span><span class="p"><span class="idiff">,</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">res</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">tcMultiple</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">tc_field</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">penv</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff right">rpats</span></span> <span class="n" style="color: #333;">thing_inside</span></span>
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1096
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1094
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<pre style="margin: 0;"> <span id="LC1094" 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;">RecCon</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">HsRecFields</span> <span class="n" style="color: #333;">rpats'</span> <span class="n" style="color: #333;">dd</span><span class="p">),</span> <span class="n" style="color: #333;">res</span><span class="p">)</span> <span class="p">}</span></span>
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1097
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<pre style="margin: 0;">-<span id="LC1097" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">where</span></span>
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<td class="diff-line-num old old_line" 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">
1098
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<pre style="margin: 0;">-<span id="LC1098" class="line" lang="haskell"> <span class="n" style="color: #333;">tc_field</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">Checker</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;">GhcRn</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;">GhcRn</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="p">(</span><span class="kt" style="color: #458; font-weight: 600;">LHsRecField</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;">LPat</span> <span class="kt" style="color: #458; font-weight: 600;">GhcTcId</span><span class="p">))</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;">tc_field</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;">HsRecField</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;">FieldOcc</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="n" style="color: #333;">lr</span> <span class="n" style="color: #333;">rdr</span><span class="p">)))</span> <span class="n" style="color: #333;">pat</span> <span class="n" style="color: #333;">pun</span><span class="p">))</span></span>
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1101
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<pre style="margin: 0;">-<span id="LC1101" class="line" lang="haskell"> <span class="n" style="color: #333;">penv</span> <span class="n" style="color: #333;">thing_inside</span></span>
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1102
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<pre style="margin: 0;">-<span id="LC1102" 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;">sel'</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">tcLookupId</span> <span class="n" style="color: #333;">sel</span></span>
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1103
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<pre style="margin: 0;">-<span id="LC1103" class="line" lang="haskell"> <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;">setSrcSpan</span> <span class="n" style="color: #333;">loc</span> <span class="o" style="font-weight: 600;">$</span> <span class="n" style="color: #333;">find_field_ty</span> <span class="n" style="color: #333;">sel</span></span>
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1104
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<pre style="margin: 0;">-<span id="LC1104" class="line" lang="haskell"> <span class="p">(</span><span class="n" style="color: #333;">occNameFS</span> <span class="o" style="font-weight: 600;">$</span> <span class="n" style="color: #333;">rdrNameOcc</span> <span class="n" style="color: #333;">rdr</span><span class="p">)</span></span>
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1105
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<pre style="margin: 0;">-<span id="LC1105" 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;">res</span><span class="p">)</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">tcConArg</span> <span class="p">(</span><span class="n" style="color: #333;">pat</span><span class="p">,</span> <span class="n" style="color: #333;">pat_ty</span><span class="p">)</span> <span class="n" style="color: #333;">penv</span> <span class="n" style="color: #333;">thing_inside</span></span>
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1106
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<pre style="margin: 0;">-<span id="LC1106" 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;">l</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">HsRecField</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;">FieldOcc</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="n" style="color: #333;">lr</span> <span class="n" style="color: #333;">rdr</span><span class="p">)))</span> <span class="n" style="color: #333;">pat'</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;">pun</span><span class="p">),</span> <span class="n" style="color: #333;">res</span><span class="p">)</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>
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1109
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<pre style="margin: 0;">-<span id="LC1109" class="line" lang="haskell"></span>
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1110
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<pre style="margin: 0;">-<span id="LC1110" class="line" lang="haskell"> <span class="n" style="color: #333;">find_field_ty</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;">FieldLabelString</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;">TcType</span></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;">find_field_ty</span> <span class="n" style="color: #333;">sel</span> <span class="n" style="color: #333;">lbl</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="kr" style="font-weight: 600;">case</span> <span class="p">[</span><span class="n" style="color: #333;">ty</span> <span class="o" style="font-weight: 600;">|</span> <span class="p">(</span><span class="n" style="color: #333;">fl</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;">field_tys</span><span class="p">,</span> <span class="n" style="color: #333;">flSelector</span> <span class="n" style="color: #333;">fl</span> <span class="o" style="font-weight: 600;">==</span> <span class="n" style="color: #333;">sel</span><span class="p">]</span> <span class="kr" style="font-weight: 600;">of</span></span>
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1095
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<pre style="margin: 0;">+<span id="LC1095" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">where</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;">tc_field</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">Checker</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;">GhcRn</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;">GhcRn</span><span class="p">))</span></span>
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1097
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<pre style="margin: 0;">+<span id="LC1097" class="line" lang="haskell"> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">LHsRecField</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;">LPat</span> <span class="kt" style="color: #458; font-weight: 600;">GhcTcId</span><span class="p">))</span></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;">tc_field</span> <span class="n" style="color: #333;">penv</span></span>
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1099
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<pre style="margin: 0;">+<span id="LC1099" class="line" lang="haskell"> <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;">HsRecField</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;">FieldOcc</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="n" style="color: #333;">lr</span> <span class="n" style="color: #333;">rdr</span><span class="p">)))</span> <span class="n" style="color: #333;">pat</span> <span class="n" style="color: #333;">pun</span><span class="p">))</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;">thing_inside</span></span>
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1101
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<pre style="margin: 0;">+<span id="LC1101" 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;">sel'</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">tcLookupId</span> <span class="n" style="color: #333;">sel</span></span>
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1102
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<pre style="margin: 0;">+<span id="LC1102" class="line" lang="haskell"> <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;">setSrcSpan</span> <span class="n" style="color: #333;">loc</span> <span class="o" style="font-weight: 600;">$</span> <span class="n" style="color: #333;">find_field_ty</span> <span class="n" style="color: #333;">sel</span></span>
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1103
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<pre style="margin: 0;">+<span id="LC1103" class="line" lang="haskell"> <span class="p">(</span><span class="n" style="color: #333;">occNameFS</span> <span class="o" style="font-weight: 600;">$</span> <span class="n" style="color: #333;">rdrNameOcc</span> <span class="n" style="color: #333;">rdr</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 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;">res</span><span class="p">)</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">tcConArg</span> <span class="n" style="color: #333;">penv</span> <span class="p">(</span><span class="n" style="color: #333;">pat</span><span class="p">,</span> <span class="n" style="color: #333;">pat_ty</span><span class="p">)</span> <span class="n" style="color: #333;">thing_inside</span></span>
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1105
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<pre style="margin: 0;">+<span id="LC1105" 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;">l</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">HsRecField</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;">FieldOcc</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="n" style="color: #333;">lr</span> <span class="n" style="color: #333;">rdr</span><span class="p">)))</span> <span class="n" style="color: #333;">pat'</span></span>
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1106
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<pre style="margin: 0;">+<span id="LC1106" class="line" lang="haskell"> <span class="n" style="color: #333;">pun</span><span class="p">),</span> <span class="n" style="color: #333;">res</span><span class="p">)</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>
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1108
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<pre style="margin: 0;">+<span id="LC1108" class="line" lang="haskell"></span>
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1109
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<pre style="margin: 0;">+<span id="LC1109" class="line" lang="haskell"> <span class="n" style="color: #333;">find_field_ty</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;">FieldLabelString</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;">TcType</span></span>
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1110
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<pre style="margin: 0;">+<span id="LC1110" class="line" lang="haskell"> <span class="n" style="color: #333;">find_field_ty</span> <span class="n" style="color: #333;">sel</span> <span class="n" style="color: #333;">lbl</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="kr" style="font-weight: 600;">case</span> <span class="p">[</span><span class="n" style="color: #333;">ty</span> <span class="o" style="font-weight: 600;">|</span> <span class="p">(</span><span class="n" style="color: #333;">fl</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;">field_tys</span><span class="p">,</span> <span class="n" style="color: #333;">flSelector</span> <span class="n" style="color: #333;">fl</span> <span class="o" style="font-weight: 600;">==</span> <span class="n" style="color: #333;">sel</span> <span class="p">]</span> <span class="kr" style="font-weight: 600;">of</span></span>
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1113
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1112
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<pre style="margin: 0;"> <span id="LC1112" class="line" lang="haskell"></span>
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1114
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1113
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<pre style="margin: 0;"> <span id="LC1113" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- No matching field; chances are this field label comes from some</span></span>
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1115
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1114
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<pre style="margin: 0;"> <span id="LC1114" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- other record type (or maybe none). If this happens, just fail,</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">@@ -1124,15 +1123,14 @@ tcConArgs con_like arg_tys (RecCon (HsRecFields rpats dd)) penv thing_inside</td>
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<pre style="margin: 0;"> <span id="LC1123" class="line" lang="haskell"> <span class="n" style="color: #333;">traceTc</span> <span class="s" style="color: #d14;">"find_field"</span> <span class="p">(</span><span class="n" style="color: #333;">ppr</span> <span class="n" style="color: #333;">pat_ty</span> <span class="o" style="font-weight: 600;"><+></span> <span class="n" style="color: #333;">ppr</span> <span class="n" style="color: #333;">extras</span><span class="p">)</span></span>
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<pre style="margin: 0;"> <span id="LC1124" class="line" lang="haskell"> <span class="kt" style="color: #458; font-weight: 600;">ASSERT</span><span class="p">(</span> <span class="n" style="color: #333;">null</span> <span class="n" style="color: #333;">extras</span> <span class="p">)</span> <span class="p">(</span><span class="n" style="color: #333;">return</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="LC1125" class="line" lang="haskell"></span>
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<pre style="margin: 0;">-<span id="LC1127" class="line" lang="haskell"> <span class="n" style="color: #333;">field_tys</span> <span class="o" style="font-weight: 600;">::</span> <span class="p">[(</span><span class="kt" style="color: #458; font-weight: 600;">FieldLabel</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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<pre style="margin: 0;">-<span id="LC1128" class="line" lang="haskell"> <span class="n" style="color: #333;">field_tys</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">zip</span> <span class="p">(</span><span class="n" style="color: #333;">conLikeFieldLabels</span> <span class="n" style="color: #333;">con_like</span><span class="p">)</span> <span class="n" style="color: #333;">arg_tys</span></span>
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<pre style="margin: 0;">+<span id="LC1126" class="line" lang="haskell"> <span class="idiff left right"> </span><span class="n" style="color: #333;">field_tys</span> <span class="o" style="font-weight: 600;">::</span> <span class="p">[(</span><span class="kt" style="color: #458; font-weight: 600;">FieldLabel</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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<pre style="margin: 0;">+<span id="LC1127" class="line" lang="haskell"> <span class="idiff left right"> </span><span class="n" style="color: #333;">field_tys</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">zip</span> <span class="p">(</span><span class="n" style="color: #333;">conLikeFieldLabels</span> <span class="n" style="color: #333;">con_like</span><span class="p">)</span> <span class="n" style="color: #333;">arg_tys</span></span>
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<pre style="margin: 0;"> <span id="LC1128" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- Don't use zipEqual! If the constructor isn't really a record, then</span></span>
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<pre style="margin: 0;"> <span id="LC1129" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- dataConFieldLabels will be empty (and each field in the pattern</span></span>
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<pre style="margin: 0;"> <span id="LC1130" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- will generate an error below).</span></span>
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<pre style="margin: 0;"> <span id="LC1131" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC1132" class="line" lang="haskell"><span class="n" style="color: #333;">tcConArg</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">Checker</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;">GhcRn</span><span class="p">,</span> <span class="kt" style="color: #458; font-weight: 600;">TcSigmaType</span><span class="p">)</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;">GhcTc</span><span class="p">)</span></span>
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<pre style="margin: 0;">-<span id="LC1134" class="line" lang="haskell"><span class="n" style="color: #333;">tcConArg</span> <span class="p">(</span><span class="n" style="color: #333;">arg_pat</span><span class="p">,</span> <span class="n" style="color: #333;">arg_ty</span><span class="p">)</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="LC1135" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">tc_lpat</span> <span class="n" style="color: #333;">arg_pat</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 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="LC1133" class="line" lang="haskell"><span class="n" style="color: #333;">tcConArg</span> <span class="n" style="color: #333;">penv</span> <span class="p">(</span><span class="n" style="color: #333;">arg_pat</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 class="n" style="color: #333;">tc_lpat</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 class="n" style="color: #333;">penv</span> <span class="n" style="color: #333;">arg_pat</span></span>
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<pre style="margin: 0;"> <span id="LC1134" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC1135" class="line" lang="haskell"><span class="n" style="color: #333;">addDataConStupidTheta</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">DataCon</span> <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="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TcM</span> <span class="nb" style="color: #0086b3;">()</span></span>
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<pre style="margin: 0;"> <span id="LC1136" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- Instantiate the "stupid theta" of the data con, and throw</span></span>
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