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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/ef950b19c04bc9c41920ecc9f94382653981d4bb">ef950b19</a></strong>
<div>
<span>by Andreas Klebinger</span>
<i>at 2020-10-09T08:53:21-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">Add TyCon Set/Env and use them in a few places.
Firstly this improves code clarity.
But it also has performance benefits as we no longer
go through the name of the TyCon to get at it's unique.
In order to make this work the recursion check for TyCon
has been moved into it's own module in order to avoid import
cycles.
</pre>
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<h4>17 changed files:</h4>
<ul>
<li class="file-stats">
<a href="#783e5dae6e86931f06700fc088fb7d48c8a07386">
compiler/GHC/Core/Coercion.hs
</a>
</li>
<li class="file-stats">
<a href="#c3967bb9d3e8f5aae2dd111b5a335b48c21c1999">
compiler/GHC/Core/Opt/Arity.hs
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<li class="file-stats">
<a href="#b6a5ba32bafb8fbda933538b3007e755fef6f101">
compiler/GHC/Core/Opt/SpecConstr.hs
</a>
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<li class="file-stats">
<a href="#f4421b4e35592648510c877ecf55b1af2b96dcee">
compiler/GHC/Core/Opt/WorkWrap/Utils.hs
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<li class="file-stats">
<a href="#0ca1508e5b0cedec2f19fe10e414597184209573">
compiler/GHC/Core/Predicate.hs
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<li class="file-stats">
<a href="#4aad0050db1a8a20db8bbca149111de99cb299c9">
compiler/GHC/Core/TyCon.hs
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<li class="file-stats">
<a href="#d1a980a3e0f207c148bb3ab404696977015bcc56">
<span class="new-file">
+
compiler/GHC/Core/TyCon/Env.hs
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<li class="file-stats">
<a href="#3aff1ead098d7ac649fdd19134f4ad3c06a0b742">
<span class="new-file">
+
compiler/GHC/Core/TyCon/RecWalk.hs
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<li class="file-stats">
<a href="#141eb4ec1dcef790aae10e538a00fe7bff164034">
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compiler/GHC/Core/TyCon/Set.hs
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<li class="file-stats">
<a href="#9095b3c5485a1f2f18a0a43346b7a49dfdd1f65d">
compiler/GHC/HsToCore/Pmc/Solver.hs
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<li class="file-stats">
<a href="#08a3d553a8ca7a753d77697815b63cd85e7dfbd6">
compiler/GHC/Tc/Gen/Foreign.hs
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<li class="file-stats">
<a href="#0c6b585a8a21f8340a85ca2cef89c4b1bf5a8953">
compiler/GHC/Tc/Solver/Monad.hs
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<li class="file-stats">
<a href="#5ed3ecf19a26af612b8100b2639f8e153f580fe9">
compiler/GHC/Tc/TyCl/Utils.hs
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<li class="file-stats">
<a href="#ee98f016857ad5548bb7cdc5dd85246585acdfd6">
compiler/GHC/Types/Literal.hs
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<li class="file-stats">
<a href="#804ef387cfc0e82b5b58b0764a766737229ac624">
compiler/GHC/Types/RepType.hs
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<li class="file-stats">
<a href="#0f33fd88c617246c7f89c4477d2d1d24f942df23">
compiler/ghc.cabal.in
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<li class="file-stats">
<a href="#bb16b4bf5aabf481dde073c41558250c783cb731">
testsuite/tests/parser/should_run/CountParserDeps.hs
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</ul>
<h4>Changes:</h4>
<li id="783e5dae6e86931f06700fc088fb7d48c8a07386">
<a href="https://gitlab.haskell.org/ghc/ghc/-/commit/ef950b19c04bc9c41920ecc9f94382653981d4bb#783e5dae6e86931f06700fc088fb7d48c8a07386"><strong>compiler/GHC/Core/Coercion.hs</strong></a>
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<td class="diff-line-num unfold js-unfold old_line" data-linenumber="135" 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="135" 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">@@ -135,6 +135,7 @@ import GHC.Core.TyCo.Subst</td>
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<pre style="margin: 0;"> <span id="LC135" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Core.TyCo.Tidy</span></span>
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<td class="diff-line-num old_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">
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<pre style="margin: 0;"> <span id="LC136" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Core.Type</span></span>
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<td class="diff-line-num old_line" data-linenumber="137" 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="LC137" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Core.TyCon</span></span>
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<td class="diff-line-num new new_line" data-linenumber="138" 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="LC138" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Core.TyCon.RecWalk</span></span>
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<td class="diff-line-num old_line" data-linenumber="138" 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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<td class="diff-line-num new_line" data-linenumber="139" 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">
139
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<pre style="margin: 0;"> <span id="LC139" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Core.Coercion.Axiom</span></span>
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<td class="diff-line-num new_line" data-linenumber="140" 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">
140
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<pre style="margin: 0;"> <span id="LC140" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="err" style="color: #a61717; background-color: #e3d2d2;">{-#</span> <span class="nn" style="color: #555;">SOURCE</span> <span class="o" style="font-weight: 600;">#-</span><span class="p">}</span> <span class="kt" style="color: #458; font-weight: 600;">GHC</span><span class="o" style="font-weight: 600;">.</span><span class="kt" style="color: #458; font-weight: 600;">Core</span><span class="o" style="font-weight: 600;">.</span><span class="kt" style="color: #458; font-weight: 600;">Utils</span> <span class="p">(</span> <span class="n" style="color: #333;">mkFunctionType</span> <span class="p">)</span></span>
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140
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<td class="diff-line-num new_line" data-linenumber="141" 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="LC141" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Types.Var</span></span>
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</li>
<li id="c3967bb9d3e8f5aae2dd111b5a335b48c21c1999">
<a href="https://gitlab.haskell.org/ghc/ghc/-/commit/ef950b19c04bc9c41920ecc9f94382653981d4bb#c3967bb9d3e8f5aae2dd111b5a335b48c21c1999"><strong>compiler/GHC/Core/Opt/Arity.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">@@ -52,7 +52,8 @@ import GHC.Core.Type as Type</td>
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<pre style="margin: 0;"> <span id="LC52" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Core.Coercion</span> <span class="k" style="font-weight: 600;">as</span> <span class="n" style="color: #333;">Type</span></span>
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<pre style="margin: 0;"> <span id="LC53" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC54" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Core.DataCon</span></span>
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<pre style="margin: 0;">-<span id="LC55" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Core.TyCon</span> <span class="p">(</span> <span class="nf" style="color: #900; font-weight: 600;">initRecTc</span><span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">checkRecTc</span><span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">tyConArity</span> <span class="p">)</span></span>
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<td class="diff-line-num new old_line" data-linenumber="56" 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="LC55" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Core.TyCon</span> <span class="p">(</span> <span class="nf" style="color: #900; font-weight: 600;">tyConArity</span> <span class="p">)</span></span>
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<pre style="margin: 0;">+<span id="LC56" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Core.TyCon.RecWalk</span> <span class="p">(</span> <span class="nf" style="color: #900; font-weight: 600;">initRecTc</span><span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">checkRecTc</span> <span class="p">)</span></span>
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56
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<pre style="margin: 0;"> <span id="LC57" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Core.Predicate</span> <span class="p">(</span> <span class="nf" style="color: #900; font-weight: 600;">isDictTy</span> <span class="p">)</span></span>
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<pre style="margin: 0;"> <span id="LC58" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Core.Multiplicity</span></span>
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<pre style="margin: 0;"> <span id="LC59" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Types.Var.Set</span></span>
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<li id="b6a5ba32bafb8fbda933538b3007e755fef6f101">
<a href="https://gitlab.haskell.org/ghc/ghc/-/commit/ef950b19c04bc9c41920ecc9f94382653981d4bb#b6a5ba32bafb8fbda933538b3007e755fef6f101"><strong>compiler/GHC/Core/Opt/SpecConstr.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">@@ -31,7 +31,7 @@ import GHC.Core.DataCon</td>
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<pre style="margin: 0;"> <span id="LC31" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Core.Coercion</span> <span class="n" style="color: #333;">hiding</span><span class="p">(</span> <span class="n" style="color: #333;">substCo</span> <span class="p">)</span></span>
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<pre style="margin: 0;"> <span id="LC32" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Core.Rules</span></span>
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<pre style="margin: 0;"> <span id="LC33" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Core.Type</span> <span class="k" style="font-weight: 600;">hiding</span> <span class="p">(</span> <span class="nf" style="color: #900; font-weight: 600;">substTy</span> <span class="p">)</span></span>
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<pre style="margin: 0;">-<span id="LC34" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Core.TyCon</span> <span class="p">(</span> <span class="nf" style="color: #900; font-weight: 600;">tyCon<span class="idiff left right">Nam</span>e</span> <span class="p">)</span></span>
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<pre style="margin: 0;">+<span id="LC34" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Core.TyCon</span> <span class="p">(</span> <span class="nf" style="color: #900; font-weight: 600;">tyCon<span class="idiff left right">Uniqu</span>e</span> <span class="p">)</span></span>
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<pre style="margin: 0;"> <span id="LC35" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Core.Multiplicity</span></span>
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<pre style="margin: 0;"> <span id="LC36" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Types.Id</span></span>
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<pre style="margin: 0;"> <span id="LC37" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Core.Ppr</span> <span class="p">(</span> <span class="nf" style="color: #900; font-weight: 600;">pprParendExpr</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">@@ -56,7 +56,7 @@ import GHC.Types.Unique.FM</td>
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<pre style="margin: 0;"> <span id="LC56" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Utils.Monad</span></span>
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<pre style="margin: 0;"> <span id="LC57" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">Control.Monad</span> <span class="p">(</span> <span class="nf" style="color: #900; font-weight: 600;">zipWithM</span> <span class="p">)</span></span>
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<pre style="margin: 0;"> <span id="LC58" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">Data.List</span></span>
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<pre style="margin: 0;">-<span id="LC59" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Builtin.Names</span> <span class="p">(</span> <span class="nf" style="color: #900; font-weight: 600;">specTyCon<span class="idiff left right">Name</span></span> <span class="p">)</span></span>
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<pre style="margin: 0;">+<span id="LC59" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Builtin.Names</span> <span class="p">(</span> <span class="nf" style="color: #900; font-weight: 600;">specTyCon<span class="idiff left right">Key</span></span> <span class="p">)</span></span>
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<pre style="margin: 0;"> <span id="LC60" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Unit.Module</span></span>
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<pre style="margin: 0;"> <span id="LC61" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">Data.Ord</span><span class="p">(</span> <span class="n" style="color: #333;">comparing</span> <span class="p">)</span></span>
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<pre style="margin: 0;"> <span id="LC62" 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">@@ -983,7 +983,7 @@ forceSpecArgTy env ty</td>
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983
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<pre style="margin: 0;"> <span id="LC983" class="line" lang="haskell"><span class="n" style="color: #333;">forceSpecArgTy</span> <span class="n" style="color: #333;">env</span> <span class="n" style="color: #333;">ty</span></span>
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984
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<pre style="margin: 0;"> <span id="LC984" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">|</span> <span class="kt" style="color: #458; font-weight: 600;">Just</span> <span class="p">(</span><span class="n" style="color: #333;">tycon</span><span class="p">,</span> <span class="n" style="color: #333;">tys</span><span class="p">)</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">splitTyConApp_maybe</span> <span class="n" style="color: #333;">ty</span></span>
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985
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<pre style="margin: 0;"> <span id="LC985" class="line" lang="haskell"> <span class="p">,</span> <span class="n" style="color: #333;">tycon</span> <span class="o" style="font-weight: 600;">/=</span> <span class="n" style="color: #333;">funTyCon</span></span>
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986
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<pre style="margin: 0;">-<span id="LC986" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">tyCon<span class="idiff left">Name</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">tycon</span></span><span class="idiff"> </span><span class="o" style="font-weight: 600;"><span class="idiff">==</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff right">specTyConName</span></span></span>
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<pre style="margin: 0;">+<span id="LC986" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">tyCon<span class="idiff left">Unique</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">tycon</span></span><span class="idiff"> </span><span class="o" style="font-weight: 600;"><span class="idiff">==</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff right">specTyConKey</span></span></span>
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987
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987
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<pre style="margin: 0;"> <span id="LC987" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">||</span> <span class="n" style="color: #333;">any</span> <span class="p">(</span><span class="n" style="color: #333;">forceSpecArgTy</span> <span class="n" style="color: #333;">env</span><span class="p">)</span> <span class="n" style="color: #333;">tys</span></span>
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988
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988
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<pre style="margin: 0;"> <span id="LC988" class="line" lang="haskell"></span>
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989
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989
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<pre style="margin: 0;"> <span id="LC989" class="line" lang="haskell"><span class="n" style="color: #333;">forceSpecArgTy</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="kt" style="color: #458; font-weight: 600;">False</span></span>
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<a href="https://gitlab.haskell.org/ghc/ghc/-/commit/ef950b19c04bc9c41920ecc9f94382653981d4bb#f4421b4e35592648510c877ecf55b1af2b96dcee"><strong>compiler/GHC/Core/Opt/WorkWrap/Utils.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">@@ -40,6 +40,7 @@ import GHC.Core.Coercion</td>
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40
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<pre style="margin: 0;"> <span id="LC40" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Core.FamInstEnv</span></span>
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41
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<pre style="margin: 0;"> <span id="LC41" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Types.Basic</span> <span class="p">(</span> <span class="kt" style="color: #458; font-weight: 600;">Boxity</span><span class="p">(</span><span class="o" style="font-weight: 600;">..</span><span class="p">)</span> <span class="p">)</span></span>
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42
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<pre style="margin: 0;"> <span id="LC42" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Core.TyCon</span></span>
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<pre style="margin: 0;">+<span id="LC43" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Core.TyCon.RecWalk</span></span>
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<pre style="margin: 0;"> <span id="LC44" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Types.Unique.Supply</span></span>
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<pre style="margin: 0;"> <span id="LC45" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Types.Unique</span></span>
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<pre style="margin: 0;"> <span id="LC46" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Data.Maybe</span></span>
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<a href="https://gitlab.haskell.org/ghc/ghc/-/commit/ef950b19c04bc9c41920ecc9f94382653981d4bb#0ca1508e5b0cedec2f19fe10e414597184209573"><strong>compiler/GHC/Core/Predicate.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">@@ -34,6 +34,7 @@ import GHC.Prelude</td>
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34
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<pre style="margin: 0;"> <span id="LC34" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Core.Type</span></span>
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<pre style="margin: 0;"> <span id="LC35" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Core.Class</span></span>
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<pre style="margin: 0;"> <span id="LC36" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Core.TyCon</span></span>
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<pre style="margin: 0;">+<span id="LC37" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Core.TyCon.RecWalk</span></span>
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37
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<pre style="margin: 0;"> <span id="LC38" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Types.Var</span></span>
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<pre style="margin: 0;"> <span id="LC39" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Core.Coercion</span></span>
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<pre style="margin: 0;"> <span id="LC40" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Core.Multiplicity</span> <span class="p">(</span> <span class="nf" style="color: #900; font-weight: 600;">scaledThing</span> <span class="p">)</span></span>
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<a href="https://gitlab.haskell.org/ghc/ghc/-/commit/ef950b19c04bc9c41920ecc9f94382653981d4bb#4aad0050db1a8a20db8bbca149111de99cb299c9"><strong>compiler/GHC/Core/TyCon.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">@@ -126,10 +126,6 @@ module GHC.Core.TyCon(</td>
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<pre style="margin: 0;"> <span id="LC126" class="line" lang="haskell"> <span class="n" style="color: #333;">primRepsCompatible</span><span class="p">,</span></span>
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<pre style="margin: 0;"> <span id="LC127" class="line" lang="haskell"> <span class="n" style="color: #333;">primRepCompatible</span><span class="p">,</span></span>
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<pre style="margin: 0;"> <span id="LC128" class="line" lang="haskell"></span>
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<pre style="margin: 0;">-<span id="LC129" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- * Recursion breaking</span></span>
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<pre style="margin: 0;">-<span id="LC130" class="line" lang="haskell"> <span class="kt" style="color: #458; font-weight: 600;">RecTcChecker</span><span class="p">,</span> <span class="n" style="color: #333;">initRecTc</span><span class="p">,</span> <span class="n" style="color: #333;">defaultRecTcMaxBound</span><span class="p">,</span></span>
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<pre style="margin: 0;">-<span id="LC131" class="line" lang="haskell"> <span class="n" style="color: #333;">setRecTcMaxBound</span><span class="p">,</span> <span class="n" style="color: #333;">checkRecTc</span></span>
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<pre style="margin: 0;">-<span id="LC132" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC129" class="line" lang="haskell"><span class="p">)</span> <span class="kr" style="font-weight: 600;">where</span></span>
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<pre style="margin: 0;"> <span id="LC130" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC131" class="line" lang="haskell"><span class="o" style="font-weight: 600;">#</span><span class="n" style="color: #333;">include</span> <span class="s" style="color: #d14;">"HsVersions.h"</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">@@ -2710,83 +2706,6 @@ instance Binary Injectivity where</td>
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<pre style="margin: 0;"> <span id="LC2706" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">_</span> <span class="o" style="font-weight: 600;">-></span> <span class="kr" style="font-weight: 600;">do</span> <span class="p">{</span> <span class="n" style="color: #333;">xs</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">get</span> <span class="n" style="color: #333;">bh</span></span>
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<pre style="margin: 0;"> <span id="LC2707" 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;">Injective</span> <span class="n" style="color: #333;">xs</span><span class="p">)</span> <span class="p">}</span> <span class="p">}</span></span>
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<pre style="margin: 0;"> <span id="LC2708" class="line" lang="haskell"></span>
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<pre style="margin: 0;">-<span id="LC2713" 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="LC2714" 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="LC2715" 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="LC2716" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;"> Walking over recursive TyCons</span></span>
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<pre style="margin: 0;">-<span id="LC2717" 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="LC2718" 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="LC2719" class="line" lang="haskell"></span>
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<pre style="margin: 0;">-<span id="LC2720" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">Note [Expanding newtypes and products]</span></span>
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<pre style="margin: 0;">-<span id="LC2721" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~</span></span>
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2722
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<pre style="margin: 0;">-<span id="LC2722" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">When expanding a type to expose a data-type constructor, we need to be</span></span>
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2723
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<pre style="margin: 0;">-<span id="LC2723" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">careful about newtypes, lest we fall into an infinite loop. Here are</span></span>
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2724
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<pre style="margin: 0;">-<span id="LC2724" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">the key examples:</span></span>
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2725
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<pre style="margin: 0;">-<span id="LC2725" class="line" lang="haskell"></span>
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2726
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<pre style="margin: 0;">-<span id="LC2726" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;"> newtype Id x = MkId x</span></span>
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2727
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<pre style="margin: 0;">-<span id="LC2727" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;"> newtype Fix f = MkFix (f (Fix f))</span></span>
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2728
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<pre style="margin: 0;">-<span id="LC2728" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;"> newtype T = MkT (T -> T)</span></span>
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2729
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<pre style="margin: 0;">-<span id="LC2729" class="line" lang="haskell"></span>
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2730
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<pre style="margin: 0;">-<span id="LC2730" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;"> Type Expansion</span></span>
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2731
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<pre style="margin: 0;">-<span id="LC2731" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;"> --------------------------</span></span>
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2732
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<pre style="margin: 0;">-<span id="LC2732" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;"> T T -> T</span></span>
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2733
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<pre style="margin: 0;">-<span id="LC2733" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;"> Fix Maybe Maybe (Fix Maybe)</span></span>
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2734
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<pre style="margin: 0;">-<span id="LC2734" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;"> Id (Id Int) Int</span></span>
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2735
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<pre style="margin: 0;">-<span id="LC2735" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;"> Fix Id NO NO NO</span></span>
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2736
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<pre style="margin: 0;">-<span id="LC2736" class="line" lang="haskell"></span>
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2737
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<pre style="margin: 0;">-<span id="LC2737" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">Notice that</span></span>
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2738
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<pre style="margin: 0;">-<span id="LC2738" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;"> * We can expand T, even though it's recursive.</span></span>
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2739
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<pre style="margin: 0;">-<span id="LC2739" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;"> * We can expand Id (Id Int), even though the Id shows up</span></span>
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2740
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<pre style="margin: 0;">-<span id="LC2740" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;"> twice at the outer level, because Id is non-recursive</span></span>
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2741
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<pre style="margin: 0;">-<span id="LC2741" class="line" lang="haskell"></span>
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2742
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<pre style="margin: 0;">-<span id="LC2742" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">So, when expanding, we keep track of when we've seen a recursive</span></span>
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2743
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<pre style="margin: 0;">-<span id="LC2743" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">newtype at outermost level; and bail out if we see it again.</span></span>
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2744
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<pre style="margin: 0;">-<span id="LC2744" class="line" lang="haskell"></span>
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2745
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<pre style="margin: 0;">-<span id="LC2745" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">We sometimes want to do the same for product types, so that the</span></span>
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2746
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<pre style="margin: 0;">-<span id="LC2746" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">strictness analyser doesn't unbox infinitely deeply.</span></span>
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2747
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<pre style="margin: 0;">-<span id="LC2747" class="line" lang="haskell"></span>
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2748
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<td class="diff-line-num new_line old" data-linenumber="2709" 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="LC2748" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">More precisely, we keep a *count* of how many times we've seen it.</span></span>
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2749
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<pre style="margin: 0;">-<span id="LC2749" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">This is to account for</span></span>
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2750
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<pre style="margin: 0;">-<span id="LC2750" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;"> data instance T (a,b) = MkT (T a) (T b)</span></span>
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<td class="diff-line-num old old_line" data-linenumber="2751" 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">
2751
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<td class="diff-line-num new_line old" data-linenumber="2709" 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="LC2751" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">Then (#10482) if we have a type like</span></span>
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2752
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<pre style="margin: 0;">-<span id="LC2752" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;"> T (Int,(Int,(Int,(Int,Int))))</span></span>
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2753
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<pre style="margin: 0;">-<span id="LC2753" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">we can still unbox deeply enough during strictness analysis.</span></span>
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2754
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<pre style="margin: 0;">-<span id="LC2754" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">We have to treat T as potentially recursive, but it's still</span></span>
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2755
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<pre style="margin: 0;">-<span id="LC2755" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">good to be able to unwrap multiple layers.</span></span>
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2756
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<pre style="margin: 0;">-<span id="LC2756" class="line" lang="haskell"></span>
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2757
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<pre style="margin: 0;">-<span id="LC2757" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">The function that manages all this is checkRecTc.</span></span>
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2758
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<pre style="margin: 0;">-<span id="LC2758" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">-}</span></span>
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2759
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<pre style="margin: 0;">-<span id="LC2759" class="line" lang="haskell"></span>
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2760
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<pre style="margin: 0;">-<span id="LC2760" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">data</span> <span class="kt" style="color: #458; font-weight: 600;">RecTcChecker</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">RC</span> <span class="o" style="font-weight: 600;">!</span><span class="kt" style="color: #458; font-weight: 600;">Int</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">NameEnv</span> <span class="kt" style="color: #458; font-weight: 600;">Int</span><span class="p">)</span></span>
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2761
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<pre style="margin: 0;">-<span id="LC2761" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- The upper bound, and the number of times</span></span>
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2762
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<pre style="margin: 0;">-<span id="LC2762" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- we have encountered each TyCon</span></span>
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2763
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<pre style="margin: 0;">-<span id="LC2763" class="line" lang="haskell"></span>
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2764
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<pre style="margin: 0;">-<span id="LC2764" class="line" lang="haskell"><span class="cd">-- | Initialise a 'RecTcChecker' with 'defaultRecTcMaxBound'.</span></span>
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2765
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<pre style="margin: 0;">-<span id="LC2765" class="line" lang="haskell"><span class="n" style="color: #333;">initRecTc</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">RecTcChecker</span></span>
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2766
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<pre style="margin: 0;">-<span id="LC2766" class="line" lang="haskell"><span class="n" style="color: #333;">initRecTc</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">RC</span> <span class="n" style="color: #333;">defaultRecTcMaxBound</span> <span class="n" style="color: #333;">emptyNameEnv</span></span>
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2767
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<pre style="margin: 0;">-<span id="LC2767" class="line" lang="haskell"></span>
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2768
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<pre style="margin: 0;">-<span id="LC2768" class="line" lang="haskell"><span class="cd">-- | The default upper bound (100) for the number of times a 'RecTcChecker' is</span></span>
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2769
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<pre style="margin: 0;">-<span id="LC2769" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- allowed to encounter each 'TyCon'.</span></span>
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2770
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<pre style="margin: 0;">-<span id="LC2770" class="line" lang="haskell"><span class="n" style="color: #333;">defaultRecTcMaxBound</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">Int</span></span>
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2771
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<pre style="margin: 0;">-<span id="LC2771" class="line" lang="haskell"><span class="n" style="color: #333;">defaultRecTcMaxBound</span> <span class="o" style="font-weight: 600;">=</span> <span class="mi" style="color: #099;">100</span></span>
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2772
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<pre style="margin: 0;">-<span id="LC2772" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- Should we have a flag for this?</span></span>
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2773
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<pre style="margin: 0;">-<span id="LC2773" class="line" lang="haskell"></span>
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2774
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<pre style="margin: 0;">-<span id="LC2774" class="line" lang="haskell"><span class="cd">-- | Change the upper bound for the number of times a 'RecTcChecker' is allowed</span></span>
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2775
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<pre style="margin: 0;">-<span id="LC2775" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- to encounter each 'TyCon'.</span></span>
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2776
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<pre style="margin: 0;">-<span id="LC2776" class="line" lang="haskell"><span class="n" style="color: #333;">setRecTcMaxBound</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">Int</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">RecTcChecker</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">RecTcChecker</span></span>
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2777
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<pre style="margin: 0;">-<span id="LC2777" class="line" lang="haskell"><span class="n" style="color: #333;">setRecTcMaxBound</span> <span class="n" style="color: #333;">new_bound</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">RC</span> <span class="n" style="color: #333;">_old_bound</span> <span class="n" style="color: #333;">rec_nts</span><span class="p">)</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">RC</span> <span class="n" style="color: #333;">new_bound</span> <span class="n" style="color: #333;">rec_nts</span></span>
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2778
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<pre style="margin: 0;">-<span id="LC2778" class="line" lang="haskell"></span>
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2779
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<pre style="margin: 0;">-<span id="LC2779" class="line" lang="haskell"><span class="n" style="color: #333;">checkRecTc</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">RecTcChecker</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TyCon</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Maybe</span> <span class="kt" style="color: #458; font-weight: 600;">RecTcChecker</span></span>
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2780
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<pre style="margin: 0;">-<span id="LC2780" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- Nothing => Recursion detected</span></span>
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2781
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<pre style="margin: 0;">-<span id="LC2781" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- Just rec_tcs => Keep going</span></span>
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2782
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<pre style="margin: 0;">-<span id="LC2782" class="line" lang="haskell"><span class="n" style="color: #333;">checkRecTc</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">RC</span> <span class="n" style="color: #333;">bound</span> <span class="n" style="color: #333;">rec_nts</span><span class="p">)</span> <span class="n" style="color: #333;">tc</span></span>
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2783
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<pre style="margin: 0;">-<span id="LC2783" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">case</span> <span class="n" style="color: #333;">lookupNameEnv</span> <span class="n" style="color: #333;">rec_nts</span> <span class="n" style="color: #333;">tc_name</span> <span class="kr" style="font-weight: 600;">of</span></span>
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<td class="diff-line-num old old_line" data-linenumber="2784" 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">
2784
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<pre style="margin: 0;">-<span id="LC2784" class="line" lang="haskell"> <span class="kt" style="color: #458; font-weight: 600;">Just</span> <span class="n" style="color: #333;">n</span> <span class="o" style="font-weight: 600;">|</span> <span class="n" style="color: #333;">n</span> <span class="o" style="font-weight: 600;">>=</span> <span class="n" style="color: #333;">bound</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Nothing</span></span>
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2785
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<pre style="margin: 0;">-<span id="LC2785" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">|</span> <span class="n" style="color: #333;">otherwise</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Just</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">RC</span> <span class="n" style="color: #333;">bound</span> <span class="p">(</span><span class="n" style="color: #333;">extendNameEnv</span> <span class="n" style="color: #333;">rec_nts</span> <span class="n" style="color: #333;">tc_name</span> <span class="p">(</span><span class="n" style="color: #333;">n</span><span class="o" style="font-weight: 600;">+</span><span class="mi" style="color: #099;">1</span><span class="p">)))</span></span>
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2786
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<pre style="margin: 0;">-<span id="LC2786" class="line" lang="haskell"> <span class="kt" style="color: #458; font-weight: 600;">Nothing</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Just</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">RC</span> <span class="n" style="color: #333;">bound</span> <span class="p">(</span><span class="n" style="color: #333;">extendNameEnv</span> <span class="n" style="color: #333;">rec_nts</span> <span class="n" style="color: #333;">tc_name</span> <span class="mi" style="color: #099;">1</span><span class="p">))</span></span>
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2787
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<pre style="margin: 0;">-<span id="LC2787" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">where</span></span>
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2788
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<pre style="margin: 0;">-<span id="LC2788" class="line" lang="haskell"> <span class="n" style="color: #333;">tc_name</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">tyConName</span> <span class="n" style="color: #333;">tc</span></span>
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2789
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<pre style="margin: 0;">-<span id="LC2789" class="line" lang="haskell"></span>
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2790
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2709
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<pre style="margin: 0;"> <span id="LC2709" class="line" lang="haskell"><span class="cd">-- | Returns whether or not this 'TyCon' is definite, or a hole</span></span>
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2791
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<pre style="margin: 0;"> <span id="LC2710" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- that may be filled in at some later point. See Note [Skolem abstract data]</span></span>
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<pre style="margin: 0;"> <span id="LC2711" class="line" lang="haskell"><span class="n" style="color: #333;">tyConSkolem</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">TyCon</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Bool</span></span>
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<a href="https://gitlab.haskell.org/ghc/ghc/-/commit/ef950b19c04bc9c41920ecc9f94382653981d4bb#d1a980a3e0f207c148bb3ab404696977015bcc56"><strong>compiler/GHC/Core/TyCon/Env.hs</strong></a>
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<pre style="margin: 0;">+<span id="LC1" 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="LC2" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">(c) The University of Glasgow 2006</span></span>
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<pre style="margin: 0;">+<span id="LC3" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">(c) The GRASP/AQUA Project, Glasgow University, 1992-1998</span></span>
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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;">\section[TyConEnv]{@TyConEnv@: tyCon environments}</span></span>
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<pre style="margin: 0;">+<span id="LC6" 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="LC7" class="line" lang="haskell"></span>
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<pre style="margin: 0;">+<span id="LC8" class="line" lang="haskell"><span class="cp" style="color: #999; font-weight: 600;">{-# LANGUAGE CPP, DeriveDataTypeable #-}</span></span>
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<pre style="margin: 0;">+<span id="LC9" class="line" lang="haskell"></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 BangPatterns #-}</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 ScopedTypeVariables #-}</span></span>
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<pre style="margin: 0;">+<span id="LC12" class="line" lang="haskell"></span>
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<pre style="margin: 0;">+<span id="LC13" class="line" lang="haskell"></span>
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<pre style="margin: 0;">+<span id="LC14" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">module</span> <span class="nn" style="color: #555;">GHC.Core.TyCon.Env</span> <span class="p">(</span></span>
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<pre style="margin: 0;">+<span id="LC15" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- * TyCon environment (map)</span></span>
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<pre style="margin: 0;">+<span id="LC16" class="line" lang="haskell"> <span class="kt" style="color: #458; font-weight: 600;">TyConEnv</span><span class="p">,</span></span>
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<pre style="margin: 0;">+<span id="LC17" class="line" lang="haskell"></span>
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<pre style="margin: 0;">+<span id="LC18" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- ** Manipulating these environments</span></span>
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<pre style="margin: 0;">+<span id="LC19" class="line" lang="haskell"> <span class="nf" style="color: #900; font-weight: 600;">mkTyConEnv</span><span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">mkTyConEnvWith</span><span class="p">,</span></span>
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<pre style="margin: 0;">+<span id="LC20" class="line" lang="haskell"> <span class="nf" style="color: #900; font-weight: 600;">emptyTyConEnv</span><span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">isEmptyTyConEnv</span><span class="p">,</span></span>
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<pre style="margin: 0;">+<span id="LC21" class="line" lang="haskell"> <span class="nf" style="color: #900; font-weight: 600;">unitTyConEnv</span><span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">nameEnvElts</span><span class="p">,</span></span>
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<pre style="margin: 0;">+<span id="LC22" class="line" lang="haskell"> <span class="nf" style="color: #900; font-weight: 600;">extendTyConEnv_C</span><span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">extendTyConEnv_Acc</span><span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">extendTyConEnv</span><span class="p">,</span></span>
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23
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<pre style="margin: 0;">+<span id="LC23" class="line" lang="haskell"> <span class="nf" style="color: #900; font-weight: 600;">extendTyConEnvList</span><span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">extendTyConEnvList_C</span><span class="p">,</span></span>
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24
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<pre style="margin: 0;">+<span id="LC24" class="line" lang="haskell"> <span class="nf" style="color: #900; font-weight: 600;">filterTyConEnv</span><span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">anyTyConEnv</span><span class="p">,</span></span>
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25
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<pre style="margin: 0;">+<span id="LC25" class="line" lang="haskell"> <span class="nf" style="color: #900; font-weight: 600;">plusTyConEnv</span><span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">plusTyConEnv_C</span><span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">plusTyConEnv_CD</span><span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">plusTyConEnv_CD2</span><span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">alterTyConEnv</span><span class="p">,</span></span>
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26
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<pre style="margin: 0;">+<span id="LC26" class="line" lang="haskell"> <span class="nf" style="color: #900; font-weight: 600;">lookupTyConEnv</span><span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">lookupTyConEnv_NF</span><span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">delFromTyConEnv</span><span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">delListFromTyConEnv</span><span class="p">,</span></span>
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27
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<pre style="margin: 0;">+<span id="LC27" class="line" lang="haskell"> <span class="nf" style="color: #900; font-weight: 600;">elemTyConEnv</span><span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">mapTyConEnv</span><span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">disjointTyConEnv</span><span class="p">,</span></span>
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28
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<pre style="margin: 0;">+<span id="LC28" class="line" lang="haskell"></span>
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29
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<pre style="margin: 0;">+<span id="LC29" class="line" lang="haskell"> <span class="kt" style="color: #458; font-weight: 600;">DTyConEnv</span><span class="p">,</span></span>
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30
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<pre style="margin: 0;">+<span id="LC30" class="line" lang="haskell"></span>
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31
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<pre style="margin: 0;">+<span id="LC31" class="line" lang="haskell"> <span class="nf" style="color: #900; font-weight: 600;">emptyDTyConEnv</span><span class="p">,</span></span>
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<pre style="margin: 0;">+<span id="LC32" class="line" lang="haskell"> <span class="nf" style="color: #900; font-weight: 600;">lookupDTyConEnv</span><span class="p">,</span></span>
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<pre style="margin: 0;">+<span id="LC33" class="line" lang="haskell"> <span class="nf" style="color: #900; font-weight: 600;">delFromDTyConEnv</span><span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">filterDTyConEnv</span><span class="p">,</span></span>
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<pre style="margin: 0;">+<span id="LC34" class="line" lang="haskell"> <span class="nf" style="color: #900; font-weight: 600;">mapDTyConEnv</span><span class="p">,</span></span>
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<pre style="margin: 0;">+<span id="LC35" class="line" lang="haskell"> <span class="nf" style="color: #900; font-weight: 600;">adjustDTyConEnv</span><span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">alterDTyConEnv</span><span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">extendDTyConEnv</span><span class="p">,</span></span>
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<pre style="margin: 0;">+<span id="LC36" class="line" lang="haskell"> <span class="p">)</span> <span class="kr" style="font-weight: 600;">where</span></span>
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37
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<pre style="margin: 0;">+<span id="LC37" class="line" lang="haskell"></span>
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<pre style="margin: 0;">+<span id="LC38" class="line" lang="haskell"><span class="o" style="font-weight: 600;">#</span><span class="n" style="color: #333;">include</span> <span class="s" style="color: #d14;">"HsVersions.h"</span></span>
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<pre style="margin: 0;">+<span id="LC39" class="line" lang="haskell"></span>
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<pre style="margin: 0;">+<span id="LC40" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Prelude</span></span>
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41
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<pre style="margin: 0;">+<span id="LC41" class="line" lang="haskell"></span>
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<pre style="margin: 0;">+<span id="LC42" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Types.Unique.FM</span></span>
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<pre style="margin: 0;">+<span id="LC43" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Types.Unique.DFM</span></span>
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<pre style="margin: 0;">+<span id="LC44" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Core.TyCon</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">TyCon</span><span class="p">)</span></span>
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<pre style="margin: 0;">+<span id="LC46" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Data.Maybe</span></span>
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<pre style="margin: 0;">+<span id="LC47" class="line" lang="haskell"></span>
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<pre style="margin: 0;">+<span id="LC48" 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="LC49" 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="LC50" 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="LC51" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">\subsection{TyCon environment}</span></span>
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<pre style="margin: 0;">+<span id="LC52" 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="LC53" 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="LC54" 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="LC55" class="line" lang="haskell"></span>
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<pre style="margin: 0;">+<span id="LC56" class="line" lang="haskell"><span class="cd">-- | TyCon Environment</span></span>
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<pre style="margin: 0;">+<span id="LC57" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">type</span> <span class="kt" style="color: #458; font-weight: 600;">TyConEnv</span> <span class="n" style="color: #333;">a</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">UniqFM</span> <span class="kt" style="color: #458; font-weight: 600;">TyCon</span> <span class="n" style="color: #333;">a</span> <span class="c1" style="color: #998; font-style: italic;">-- Domain is TyCon</span></span>
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<pre style="margin: 0;">+<span id="LC58" class="line" lang="haskell"></span>
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<pre style="margin: 0;">+<span id="LC59" class="line" lang="haskell"><span class="n" style="color: #333;">emptyTyConEnv</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">TyConEnv</span> <span class="n" style="color: #333;">a</span></span>
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<pre style="margin: 0;">+<span id="LC60" class="line" lang="haskell"><span class="n" style="color: #333;">isEmptyTyConEnv</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">TyConEnv</span> <span class="n" style="color: #333;">a</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Bool</span></span>
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<pre style="margin: 0;">+<span id="LC61" class="line" lang="haskell"><span class="n" style="color: #333;">mkTyConEnv</span> <span class="o" style="font-weight: 600;">::</span> <span class="p">[(</span><span class="kt" style="color: #458; font-weight: 600;">TyCon</span><span class="p">,</span><span class="n" style="color: #333;">a</span><span class="p">)]</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TyConEnv</span> <span class="n" style="color: #333;">a</span></span>
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<pre style="margin: 0;">+<span id="LC62" class="line" lang="haskell"><span class="n" style="color: #333;">mkTyConEnvWith</span> <span class="o" style="font-weight: 600;">::</span> <span class="p">(</span><span class="n" style="color: #333;">a</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TyCon</span><span class="p">)</span> <span class="o" style="font-weight: 600;">-></span> <span class="p">[</span><span class="n" style="color: #333;">a</span><span class="p">]</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TyConEnv</span> <span class="n" style="color: #333;">a</span></span>
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<pre style="margin: 0;">+<span id="LC63" class="line" lang="haskell"><span class="n" style="color: #333;">nameEnvElts</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">TyConEnv</span> <span class="n" style="color: #333;">a</span> <span class="o" style="font-weight: 600;">-></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="LC64" class="line" lang="haskell"><span class="n" style="color: #333;">alterTyConEnv</span> <span class="o" style="font-weight: 600;">::</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Maybe</span> <span class="n" style="color: #333;">a</span><span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Maybe</span> <span class="n" style="color: #333;">a</span><span class="p">)</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TyConEnv</span> <span class="n" style="color: #333;">a</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TyCon</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TyConEnv</span> <span class="n" style="color: #333;">a</span></span>
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65
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<pre style="margin: 0;">+<span id="LC65" class="line" lang="haskell"><span class="n" style="color: #333;">extendTyConEnv_C</span> <span class="o" style="font-weight: 600;">::</span> <span class="p">(</span><span class="n" style="color: #333;">a</span><span class="o" style="font-weight: 600;">-></span><span class="n" style="color: #333;">a</span><span class="o" style="font-weight: 600;">-></span><span class="n" style="color: #333;">a</span><span class="p">)</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TyConEnv</span> <span class="n" style="color: #333;">a</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TyCon</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">a</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TyConEnv</span> <span class="n" style="color: #333;">a</span></span>
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<pre style="margin: 0;">+<span id="LC66" class="line" lang="haskell"><span class="n" style="color: #333;">extendTyConEnv_Acc</span> <span class="o" style="font-weight: 600;">::</span> <span class="p">(</span><span class="n" style="color: #333;">a</span><span class="o" style="font-weight: 600;">-></span><span class="n" style="color: #333;">b</span><span class="o" style="font-weight: 600;">-></span><span class="n" style="color: #333;">b</span><span class="p">)</span> <span class="o" style="font-weight: 600;">-></span> <span class="p">(</span><span class="n" style="color: #333;">a</span><span class="o" style="font-weight: 600;">-></span><span class="n" style="color: #333;">b</span><span class="p">)</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TyConEnv</span> <span class="n" style="color: #333;">b</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TyCon</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">a</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TyConEnv</span> <span class="n" style="color: #333;">b</span></span>
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<pre style="margin: 0;">+<span id="LC67" class="line" lang="haskell"><span class="n" style="color: #333;">extendTyConEnv</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">TyConEnv</span> <span class="n" style="color: #333;">a</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TyCon</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">a</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TyConEnv</span> <span class="n" style="color: #333;">a</span></span>
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68
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<pre style="margin: 0;">+<span id="LC68" class="line" lang="haskell"><span class="n" style="color: #333;">plusTyConEnv</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">TyConEnv</span> <span class="n" style="color: #333;">a</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TyConEnv</span> <span class="n" style="color: #333;">a</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TyConEnv</span> <span class="n" style="color: #333;">a</span></span>
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69
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<pre style="margin: 0;">+<span id="LC69" class="line" lang="haskell"><span class="n" style="color: #333;">plusTyConEnv_C</span> <span class="o" style="font-weight: 600;">::</span> <span class="p">(</span><span class="n" style="color: #333;">a</span><span class="o" style="font-weight: 600;">-></span><span class="n" style="color: #333;">a</span><span class="o" style="font-weight: 600;">-></span><span class="n" style="color: #333;">a</span><span class="p">)</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TyConEnv</span> <span class="n" style="color: #333;">a</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TyConEnv</span> <span class="n" style="color: #333;">a</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TyConEnv</span> <span class="n" style="color: #333;">a</span></span>
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70
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<pre style="margin: 0;">+<span id="LC70" class="line" lang="haskell"><span class="n" style="color: #333;">plusTyConEnv_CD</span> <span class="o" style="font-weight: 600;">::</span> <span class="p">(</span><span class="n" style="color: #333;">a</span><span class="o" style="font-weight: 600;">-></span><span class="n" style="color: #333;">a</span><span class="o" style="font-weight: 600;">-></span><span class="n" style="color: #333;">a</span><span class="p">)</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TyConEnv</span> <span class="n" style="color: #333;">a</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">a</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TyConEnv</span> <span class="n" style="color: #333;">a</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">a</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TyConEnv</span> <span class="n" style="color: #333;">a</span></span>
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71
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<pre style="margin: 0;">+<span id="LC71" class="line" lang="haskell"><span class="n" style="color: #333;">plusTyConEnv_CD2</span> <span class="o" style="font-weight: 600;">::</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Maybe</span> <span class="n" style="color: #333;">a</span><span class="o" style="font-weight: 600;">-></span><span class="kt" style="color: #458; font-weight: 600;">Maybe</span> <span class="n" style="color: #333;">a</span><span class="o" style="font-weight: 600;">-></span><span class="n" style="color: #333;">a</span><span class="p">)</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TyConEnv</span> <span class="n" style="color: #333;">a</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TyConEnv</span> <span class="n" style="color: #333;">a</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TyConEnv</span> <span class="n" style="color: #333;">a</span></span>
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72
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<pre style="margin: 0;">+<span id="LC72" class="line" lang="haskell"><span class="n" style="color: #333;">extendTyConEnvList</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">TyConEnv</span> <span class="n" style="color: #333;">a</span> <span class="o" style="font-weight: 600;">-></span> <span class="p">[(</span><span class="kt" style="color: #458; font-weight: 600;">TyCon</span><span class="p">,</span><span class="n" style="color: #333;">a</span><span class="p">)]</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TyConEnv</span> <span class="n" style="color: #333;">a</span></span>
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73
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<pre style="margin: 0;">+<span id="LC73" class="line" lang="haskell"><span class="n" style="color: #333;">extendTyConEnvList_C</span> <span class="o" style="font-weight: 600;">::</span> <span class="p">(</span><span class="n" style="color: #333;">a</span><span class="o" style="font-weight: 600;">-></span><span class="n" style="color: #333;">a</span><span class="o" style="font-weight: 600;">-></span><span class="n" style="color: #333;">a</span><span class="p">)</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TyConEnv</span> <span class="n" style="color: #333;">a</span> <span class="o" style="font-weight: 600;">-></span> <span class="p">[(</span><span class="kt" style="color: #458; font-weight: 600;">TyCon</span><span class="p">,</span><span class="n" style="color: #333;">a</span><span class="p">)]</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TyConEnv</span> <span class="n" style="color: #333;">a</span></span>
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74
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<pre style="margin: 0;">+<span id="LC74" class="line" lang="haskell"><span class="n" style="color: #333;">delFromTyConEnv</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">TyConEnv</span> <span class="n" style="color: #333;">a</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TyCon</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TyConEnv</span> <span class="n" style="color: #333;">a</span></span>
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75
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<pre style="margin: 0;">+<span id="LC75" class="line" lang="haskell"><span class="n" style="color: #333;">delListFromTyConEnv</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">TyConEnv</span> <span class="n" style="color: #333;">a</span> <span class="o" style="font-weight: 600;">-></span> <span class="p">[</span><span class="kt" style="color: #458; font-weight: 600;">TyCon</span><span class="p">]</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TyConEnv</span> <span class="n" style="color: #333;">a</span></span>
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76
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<pre style="margin: 0;">+<span id="LC76" class="line" lang="haskell"><span class="n" style="color: #333;">elemTyConEnv</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">TyCon</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TyConEnv</span> <span class="n" style="color: #333;">a</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Bool</span></span>
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77
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<pre style="margin: 0;">+<span id="LC77" class="line" lang="haskell"><span class="n" style="color: #333;">unitTyConEnv</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">TyCon</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">a</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TyConEnv</span> <span class="n" style="color: #333;">a</span></span>
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78
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<pre style="margin: 0;">+<span id="LC78" class="line" lang="haskell"><span class="n" style="color: #333;">lookupTyConEnv</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">TyConEnv</span> <span class="n" style="color: #333;">a</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TyCon</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Maybe</span> <span class="n" style="color: #333;">a</span></span>
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79
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<pre style="margin: 0;">+<span id="LC79" class="line" lang="haskell"><span class="n" style="color: #333;">lookupTyConEnv_NF</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">TyConEnv</span> <span class="n" style="color: #333;">a</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TyCon</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">a</span></span>
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80
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<pre style="margin: 0;">+<span id="LC80" class="line" lang="haskell"><span class="n" style="color: #333;">filterTyConEnv</span> <span class="o" style="font-weight: 600;">::</span> <span class="p">(</span><span class="n" style="color: #333;">elt</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Bool</span><span class="p">)</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TyConEnv</span> <span class="n" style="color: #333;">elt</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TyConEnv</span> <span class="n" style="color: #333;">elt</span></span>
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<pre style="margin: 0;">+<span id="LC81" class="line" lang="haskell"><span class="n" style="color: #333;">anyTyConEnv</span> <span class="o" style="font-weight: 600;">::</span> <span class="p">(</span><span class="n" style="color: #333;">elt</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Bool</span><span class="p">)</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TyConEnv</span> <span class="n" style="color: #333;">elt</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Bool</span></span>
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<pre style="margin: 0;">+<span id="LC82" class="line" lang="haskell"><span class="n" style="color: #333;">mapTyConEnv</span> <span class="o" style="font-weight: 600;">::</span> <span class="p">(</span><span class="n" style="color: #333;">elt1</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">elt2</span><span class="p">)</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TyConEnv</span> <span class="n" style="color: #333;">elt1</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TyConEnv</span> <span class="n" style="color: #333;">elt2</span></span>
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<pre style="margin: 0;">+<span id="LC83" class="line" lang="haskell"><span class="n" style="color: #333;">disjointTyConEnv</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">TyConEnv</span> <span class="n" style="color: #333;">a</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TyConEnv</span> <span class="n" style="color: #333;">a</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Bool</span></span>
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84
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<pre style="margin: 0;">+<span id="LC84" class="line" lang="haskell"></span>
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85
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<pre style="margin: 0;">+<span id="LC85" class="line" lang="haskell"><span class="n" style="color: #333;">nameEnvElts</span> <span class="n" style="color: #333;">x</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">eltsUFM</span> <span class="n" style="color: #333;">x</span></span>
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86
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<pre style="margin: 0;">+<span id="LC86" class="line" lang="haskell"><span class="n" style="color: #333;">emptyTyConEnv</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">emptyUFM</span></span>
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87
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<pre style="margin: 0;">+<span id="LC87" class="line" lang="haskell"><span class="n" style="color: #333;">isEmptyTyConEnv</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">isNullUFM</span></span>
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88
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<pre style="margin: 0;">+<span id="LC88" class="line" lang="haskell"><span class="n" style="color: #333;">unitTyConEnv</span> <span class="n" style="color: #333;">x</span> <span class="n" style="color: #333;">y</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">unitUFM</span> <span class="n" style="color: #333;">x</span> <span class="n" style="color: #333;">y</span></span>
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89
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<pre style="margin: 0;">+<span id="LC89" class="line" lang="haskell"><span class="n" style="color: #333;">extendTyConEnv</span> <span class="n" style="color: #333;">x</span> <span class="n" style="color: #333;">y</span> <span class="n" style="color: #333;">z</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">addToUFM</span> <span class="n" style="color: #333;">x</span> <span class="n" style="color: #333;">y</span> <span class="n" style="color: #333;">z</span></span>
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90
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<pre style="margin: 0;">+<span id="LC90" class="line" lang="haskell"><span class="n" style="color: #333;">extendTyConEnvList</span> <span class="n" style="color: #333;">x</span> <span class="n" style="color: #333;">l</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">addListToUFM</span> <span class="n" style="color: #333;">x</span> <span class="n" style="color: #333;">l</span></span>
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91
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<pre style="margin: 0;">+<span id="LC91" class="line" lang="haskell"><span class="n" style="color: #333;">lookupTyConEnv</span> <span class="n" style="color: #333;">x</span> <span class="n" style="color: #333;">y</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">lookupUFM</span> <span class="n" style="color: #333;">x</span> <span class="n" style="color: #333;">y</span></span>
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92
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<pre style="margin: 0;">+<span id="LC92" class="line" lang="haskell"><span class="n" style="color: #333;">alterTyConEnv</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">alterUFM</span></span>
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<pre style="margin: 0;">+<span id="LC93" class="line" lang="haskell"><span class="n" style="color: #333;">mkTyConEnv</span> <span class="n" style="color: #333;">l</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">listToUFM</span> <span class="n" style="color: #333;">l</span></span>
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94
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<pre style="margin: 0;">+<span id="LC94" class="line" lang="haskell"><span class="n" style="color: #333;">mkTyConEnvWith</span> <span class="n" style="color: #333;">f</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">mkTyConEnv</span> <span class="o" style="font-weight: 600;">.</span> <span class="n" style="color: #333;">map</span> <span class="p">(</span><span class="nf" style="color: #900; font-weight: 600;">\</span><span class="n" style="color: #333;">a</span> <span class="o" style="font-weight: 600;">-></span> <span class="p">(</span><span class="n" style="color: #333;">f</span> <span class="n" style="color: #333;">a</span><span class="p">,</span> <span class="n" style="color: #333;">a</span><span class="p">))</span></span>
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<pre style="margin: 0;">+<span id="LC95" class="line" lang="haskell"><span class="n" style="color: #333;">elemTyConEnv</span> <span class="n" style="color: #333;">x</span> <span class="n" style="color: #333;">y</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">elemUFM</span> <span class="n" style="color: #333;">x</span> <span class="n" style="color: #333;">y</span></span>
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96
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<pre style="margin: 0;">+<span id="LC96" class="line" lang="haskell"><span class="n" style="color: #333;">plusTyConEnv</span> <span class="n" style="color: #333;">x</span> <span class="n" style="color: #333;">y</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">plusUFM</span> <span class="n" style="color: #333;">x</span> <span class="n" style="color: #333;">y</span></span>
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97
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<pre style="margin: 0;">+<span id="LC97" class="line" lang="haskell"><span class="n" style="color: #333;">plusTyConEnv_C</span> <span class="n" style="color: #333;">f</span> <span class="n" style="color: #333;">x</span> <span class="n" style="color: #333;">y</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">plusUFM_C</span> <span class="n" style="color: #333;">f</span> <span class="n" style="color: #333;">x</span> <span class="n" style="color: #333;">y</span></span>
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98
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<pre style="margin: 0;">+<span id="LC98" class="line" lang="haskell"><span class="n" style="color: #333;">plusTyConEnv_CD</span> <span class="n" style="color: #333;">f</span> <span class="n" style="color: #333;">x</span> <span class="n" style="color: #333;">d</span> <span class="n" style="color: #333;">y</span> <span class="n" style="color: #333;">b</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">plusUFM_CD</span> <span class="n" style="color: #333;">f</span> <span class="n" style="color: #333;">x</span> <span class="n" style="color: #333;">d</span> <span class="n" style="color: #333;">y</span> <span class="n" style="color: #333;">b</span></span>
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<pre style="margin: 0;">+<span id="LC99" class="line" lang="haskell"><span class="n" style="color: #333;">plusTyConEnv_CD2</span> <span class="n" style="color: #333;">f</span> <span class="n" style="color: #333;">x</span> <span class="n" style="color: #333;">y</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">plusUFM_CD2</span> <span class="n" style="color: #333;">f</span> <span class="n" style="color: #333;">x</span> <span class="n" style="color: #333;">y</span></span>
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100
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<pre style="margin: 0;">+<span id="LC100" class="line" lang="haskell"><span class="n" style="color: #333;">extendTyConEnv_C</span> <span class="n" style="color: #333;">f</span> <span class="n" style="color: #333;">x</span> <span class="n" style="color: #333;">y</span> <span class="n" style="color: #333;">z</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">addToUFM_C</span> <span class="n" style="color: #333;">f</span> <span class="n" style="color: #333;">x</span> <span class="n" style="color: #333;">y</span> <span class="n" style="color: #333;">z</span></span>
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101
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<pre style="margin: 0;">+<span id="LC101" class="line" lang="haskell"><span class="n" style="color: #333;">mapTyConEnv</span> <span class="n" style="color: #333;">f</span> <span class="n" style="color: #333;">x</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">mapUFM</span> <span class="n" style="color: #333;">f</span> <span class="n" style="color: #333;">x</span></span>
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102
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<pre style="margin: 0;">+<span id="LC102" class="line" lang="haskell"><span class="n" style="color: #333;">extendTyConEnv_Acc</span> <span class="n" style="color: #333;">x</span> <span class="n" style="color: #333;">y</span> <span class="n" style="color: #333;">z</span> <span class="n" style="color: #333;">a</span> <span class="n" style="color: #333;">b</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">addToUFM_Acc</span> <span class="n" style="color: #333;">x</span> <span class="n" style="color: #333;">y</span> <span class="n" style="color: #333;">z</span> <span class="n" style="color: #333;">a</span> <span class="n" style="color: #333;">b</span></span>
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103
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<pre style="margin: 0;">+<span id="LC103" class="line" lang="haskell"><span class="n" style="color: #333;">extendTyConEnvList_C</span> <span class="n" style="color: #333;">x</span> <span class="n" style="color: #333;">y</span> <span class="n" style="color: #333;">z</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">addListToUFM_C</span> <span class="n" style="color: #333;">x</span> <span class="n" style="color: #333;">y</span> <span class="n" style="color: #333;">z</span></span>
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104
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<pre style="margin: 0;">+<span id="LC104" class="line" lang="haskell"><span class="n" style="color: #333;">delFromTyConEnv</span> <span class="n" style="color: #333;">x</span> <span class="n" style="color: #333;">y</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">delFromUFM</span> <span class="n" style="color: #333;">x</span> <span class="n" style="color: #333;">y</span></span>
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105
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<pre style="margin: 0;">+<span id="LC105" class="line" lang="haskell"><span class="n" style="color: #333;">delListFromTyConEnv</span> <span class="n" style="color: #333;">x</span> <span class="n" style="color: #333;">y</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">delListFromUFM</span> <span class="n" style="color: #333;">x</span> <span class="n" style="color: #333;">y</span></span>
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106
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<pre style="margin: 0;">+<span id="LC106" class="line" lang="haskell"><span class="n" style="color: #333;">filterTyConEnv</span> <span class="n" style="color: #333;">x</span> <span class="n" style="color: #333;">y</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">filterUFM</span> <span class="n" style="color: #333;">x</span> <span class="n" style="color: #333;">y</span></span>
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107
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<pre style="margin: 0;">+<span id="LC107" class="line" lang="haskell"><span class="n" style="color: #333;">anyTyConEnv</span> <span class="n" style="color: #333;">f</span> <span class="n" style="color: #333;">x</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">foldUFM</span> <span class="p">((</span><span class="o" style="font-weight: 600;">||</span><span class="p">)</span> <span class="o" style="font-weight: 600;">.</span> <span class="n" style="color: #333;">f</span><span class="p">)</span> <span class="kt" style="color: #458; font-weight: 600;">False</span> <span class="n" style="color: #333;">x</span></span>
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108
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<pre style="margin: 0;">+<span id="LC108" class="line" lang="haskell"><span class="n" style="color: #333;">disjointTyConEnv</span> <span class="n" style="color: #333;">x</span> <span class="n" style="color: #333;">y</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">disjointUFM</span> <span class="n" style="color: #333;">x</span> <span class="n" style="color: #333;">y</span></span>
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109
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<pre style="margin: 0;">+<span id="LC109" class="line" lang="haskell"></span>
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<pre style="margin: 0;">+<span id="LC110" class="line" lang="haskell"><span class="n" style="color: #333;">lookupTyConEnv_NF</span> <span class="n" style="color: #333;">env</span> <span class="n" style="color: #333;">n</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">expectJust</span> <span class="s" style="color: #d14;">"lookupTyConEnv_NF"</span> <span class="p">(</span><span class="n" style="color: #333;">lookupTyConEnv</span> <span class="n" style="color: #333;">env</span> <span class="n" style="color: #333;">n</span><span class="p">)</span></span>
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111
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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="cd">-- | Deterministic TyCon Environment</span></span>
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113
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<pre style="margin: 0;">+<span id="LC113" 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="LC114" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- See Note [Deterministic UniqFM] in "GHC.Types.Unique.DFM" for explanation why</span></span>
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115
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<pre style="margin: 0;">+<span id="LC115" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- we need DTyConEnv.</span></span>
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116
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<pre style="margin: 0;">+<span id="LC116" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">type</span> <span class="kt" style="color: #458; font-weight: 600;">DTyConEnv</span> <span class="n" style="color: #333;">a</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">UniqDFM</span> <span class="kt" style="color: #458; font-weight: 600;">TyCon</span> <span class="n" style="color: #333;">a</span></span>
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117
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<pre style="margin: 0;">+<span id="LC117" class="line" lang="haskell"></span>
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<pre style="margin: 0;">+<span id="LC118" class="line" lang="haskell"><span class="n" style="color: #333;">emptyDTyConEnv</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">DTyConEnv</span> <span class="n" style="color: #333;">a</span></span>
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119
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<pre style="margin: 0;">+<span id="LC119" class="line" lang="haskell"><span class="n" style="color: #333;">emptyDTyConEnv</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">emptyUDFM</span></span>
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120
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<pre style="margin: 0;">+<span id="LC120" class="line" lang="haskell"></span>
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121
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<pre style="margin: 0;">+<span id="LC121" class="line" lang="haskell"><span class="n" style="color: #333;">lookupDTyConEnv</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">DTyConEnv</span> <span class="n" style="color: #333;">a</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TyCon</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Maybe</span> <span class="n" style="color: #333;">a</span></span>
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122
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<pre style="margin: 0;">+<span id="LC122" class="line" lang="haskell"><span class="n" style="color: #333;">lookupDTyConEnv</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">lookupUDFM</span></span>
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123
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<pre style="margin: 0;">+<span id="LC123" class="line" lang="haskell"></span>
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124
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<pre style="margin: 0;">+<span id="LC124" class="line" lang="haskell"><span class="n" style="color: #333;">delFromDTyConEnv</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">DTyConEnv</span> <span class="n" style="color: #333;">a</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TyCon</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">DTyConEnv</span> <span class="n" style="color: #333;">a</span></span>
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125
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<pre style="margin: 0;">+<span id="LC125" class="line" lang="haskell"><span class="n" style="color: #333;">delFromDTyConEnv</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">delFromUDFM</span></span>
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126
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<pre style="margin: 0;">+<span id="LC126" class="line" lang="haskell"></span>
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127
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<pre style="margin: 0;">+<span id="LC127" class="line" lang="haskell"><span class="n" style="color: #333;">filterDTyConEnv</span> <span class="o" style="font-weight: 600;">::</span> <span class="p">(</span><span class="n" style="color: #333;">a</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Bool</span><span class="p">)</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">DTyConEnv</span> <span class="n" style="color: #333;">a</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">DTyConEnv</span> <span class="n" style="color: #333;">a</span></span>
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128
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<pre style="margin: 0;">+<span id="LC128" class="line" lang="haskell"><span class="n" style="color: #333;">filterDTyConEnv</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">filterUDFM</span></span>
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129
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<pre style="margin: 0;">+<span id="LC129" class="line" lang="haskell"></span>
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130
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<pre style="margin: 0;">+<span id="LC130" class="line" lang="haskell"><span class="n" style="color: #333;">mapDTyConEnv</span> <span class="o" style="font-weight: 600;">::</span> <span class="p">(</span><span class="n" style="color: #333;">a</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">b</span><span class="p">)</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">DTyConEnv</span> <span class="n" style="color: #333;">a</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">DTyConEnv</span> <span class="n" style="color: #333;">b</span></span>
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131
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<pre style="margin: 0;">+<span id="LC131" class="line" lang="haskell"><span class="n" style="color: #333;">mapDTyConEnv</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">mapUDFM</span></span>
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132
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<pre style="margin: 0;">+<span id="LC132" class="line" lang="haskell"></span>
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133
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<pre style="margin: 0;">+<span id="LC133" class="line" lang="haskell"><span class="n" style="color: #333;">adjustDTyConEnv</span> <span class="o" style="font-weight: 600;">::</span> <span class="p">(</span><span class="n" style="color: #333;">a</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">a</span><span class="p">)</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">DTyConEnv</span> <span class="n" style="color: #333;">a</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TyCon</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">DTyConEnv</span> <span class="n" style="color: #333;">a</span></span>
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134
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<pre style="margin: 0;">+<span id="LC134" class="line" lang="haskell"><span class="n" style="color: #333;">adjustDTyConEnv</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">adjustUDFM</span></span>
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135
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<pre style="margin: 0;">+<span id="LC135" class="line" lang="haskell"></span>
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136
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<pre style="margin: 0;">+<span id="LC136" class="line" lang="haskell"><span class="n" style="color: #333;">alterDTyConEnv</span> <span class="o" style="font-weight: 600;">::</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Maybe</span> <span class="n" style="color: #333;">a</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Maybe</span> <span class="n" style="color: #333;">a</span><span class="p">)</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">DTyConEnv</span> <span class="n" style="color: #333;">a</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TyCon</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">DTyConEnv</span> <span class="n" style="color: #333;">a</span></span>
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137
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<pre style="margin: 0;">+<span id="LC137" class="line" lang="haskell"><span class="n" style="color: #333;">alterDTyConEnv</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">alterUDFM</span></span>
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138
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<pre style="margin: 0;">+<span id="LC138" class="line" lang="haskell"></span>
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<pre style="margin: 0;">+<span id="LC139" class="line" lang="haskell"><span class="n" style="color: #333;">extendDTyConEnv</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">DTyConEnv</span> <span class="n" style="color: #333;">a</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TyCon</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">a</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">DTyConEnv</span> <span class="n" style="color: #333;">a</span></span>
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140
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<pre style="margin: 0;">+<span id="LC140" class="line" lang="haskell"><span class="n" style="color: #333;">extendDTyConEnv</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">addToUDFM</span></span></pre>
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<a href="https://gitlab.haskell.org/ghc/ghc/-/commit/ef950b19c04bc9c41920ecc9f94382653981d4bb#3aff1ead098d7ac649fdd19134f4ad3c06a0b742"><strong>compiler/GHC/Core/TyCon/RecWalk.hs</strong></a>
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<pre style="margin: 0;">+<span id="LC1" 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="LC2" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">(c) The University of Glasgow 2006</span></span>
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<pre style="margin: 0;">+<span id="LC3" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">(c) The GRASP/AQUA Project, Glasgow University, 1992-1998</span></span>
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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;">Check for recursive type constructors.</span></span>
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<pre style="margin: 0;">+<span id="LC6" class="line" lang="haskell"></span>
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<pre style="margin: 0;">+<span id="LC7" 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="LC8" class="line" lang="haskell"></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 CPP, DeriveDataTypeable #-}</span></span>
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<pre style="margin: 0;">+<span id="LC10" class="line" lang="haskell"></span>
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<pre style="margin: 0;">+<span id="LC11" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">module</span> <span class="nn" style="color: #555;">GHC.Core.TyCon.RecWalk</span> <span class="p">(</span></span>
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<pre style="margin: 0;">+<span id="LC12" class="line" lang="haskell"></span>
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<pre style="margin: 0;">+<span id="LC13" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- * Recursion breaking</span></span>
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<pre style="margin: 0;">+<span id="LC14" class="line" lang="haskell"> <span class="kt" style="color: #458; font-weight: 600;">RecTcChecker</span><span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">initRecTc</span><span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">defaultRecTcMaxBound</span><span class="p">,</span></span>
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<pre style="margin: 0;">+<span id="LC15" class="line" lang="haskell"> <span class="nf" style="color: #900; font-weight: 600;">setRecTcMaxBound</span><span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">checkRecTc</span></span>
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<pre style="margin: 0;">+<span id="LC16" class="line" lang="haskell"></span>
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<pre style="margin: 0;">+<span id="LC17" class="line" lang="haskell"> <span class="p">)</span> <span class="kr" style="font-weight: 600;">where</span></span>
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<pre style="margin: 0;">+<span id="LC18" class="line" lang="haskell"></span>
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<pre style="margin: 0;">+<span id="LC19" class="line" lang="haskell"><span class="o" style="font-weight: 600;">#</span><span class="n" style="color: #333;">include</span> <span class="s" style="color: #d14;">"HsVersions.h"</span></span>
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<pre style="margin: 0;">+<span id="LC20" class="line" lang="haskell"></span>
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<pre style="margin: 0;">+<span id="LC21" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Prelude</span></span>
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<pre style="margin: 0;">+<span id="LC22" class="line" lang="haskell"></span>
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<pre style="margin: 0;">+<span id="LC23" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Core.TyCon</span></span>
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<pre style="margin: 0;">+<span id="LC24" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Core.TyCon.Env</span></span>
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<pre style="margin: 0;">+<span id="LC25" class="line" lang="haskell"></span>
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<pre style="margin: 0;">+<span id="LC26" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">{-</span></span>
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27
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<pre style="margin: 0;">+<span id="LC27" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">************************************************************************</span></span>
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28
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<pre style="margin: 0;">+<span id="LC28" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">* *</span></span>
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29
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<pre style="margin: 0;">+<span id="LC29" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;"> Walking over recursive TyCons</span></span>
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<pre style="margin: 0;">+<span id="LC30" 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="LC31" 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="LC32" class="line" lang="haskell"></span>
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<pre style="margin: 0;">+<span id="LC33" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">Note [Expanding newtypes and products]</span></span>
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<pre style="margin: 0;">+<span id="LC34" 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="LC35" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">When expanding a type to expose a data-type constructor, we need to be</span></span>
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<pre style="margin: 0;">+<span id="LC36" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">careful about newtypes, lest we fall into an infinite loop. Here are</span></span>
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<pre style="margin: 0;">+<span id="LC37" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">the key examples:</span></span>
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<pre style="margin: 0;">+<span id="LC38" class="line" lang="haskell"></span>
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<pre style="margin: 0;">+<span id="LC39" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;"> newtype Id x = MkId x</span></span>
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<pre style="margin: 0;">+<span id="LC40" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;"> newtype Fix f = MkFix (f (Fix f))</span></span>
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<pre style="margin: 0;">+<span id="LC41" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;"> newtype T = MkT (T -> T)</span></span>
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<pre style="margin: 0;">+<span id="LC42" class="line" lang="haskell"></span>
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<pre style="margin: 0;">+<span id="LC43" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;"> Type Expansion</span></span>
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<pre style="margin: 0;">+<span id="LC44" 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="LC45" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;"> T T -> T</span></span>
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<pre style="margin: 0;">+<span id="LC46" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;"> Fix Maybe Maybe (Fix Maybe)</span></span>
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<pre style="margin: 0;">+<span id="LC47" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;"> Id (Id Int) Int</span></span>
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<pre style="margin: 0;">+<span id="LC48" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;"> Fix Id NO NO NO</span></span>
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<pre style="margin: 0;">+<span id="LC49" class="line" lang="haskell"></span>
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<pre style="margin: 0;">+<span id="LC50" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">Notice that</span></span>
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<pre style="margin: 0;">+<span id="LC51" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;"> * We can expand T, even though it's recursive.</span></span>
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<pre style="margin: 0;">+<span id="LC52" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;"> * We can expand Id (Id Int), even though the Id shows up</span></span>
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<pre style="margin: 0;">+<span id="LC53" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;"> twice at the outer level, because Id is non-recursive</span></span>
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<pre style="margin: 0;">+<span id="LC54" class="line" lang="haskell"></span>
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<pre style="margin: 0;">+<span id="LC55" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">So, when expanding, we keep track of when we've seen a recursive</span></span>
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<pre style="margin: 0;">+<span id="LC56" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">newtype at outermost level; and bail out if we see it again.</span></span>
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<pre style="margin: 0;">+<span id="LC57" class="line" lang="haskell"></span>
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<pre style="margin: 0;">+<span id="LC58" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">We sometimes want to do the same for product types, so that the</span></span>
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<pre style="margin: 0;">+<span id="LC59" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">strictness analyser doesn't unbox infinitely deeply.</span></span>
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<pre style="margin: 0;">+<span id="LC60" class="line" lang="haskell"></span>
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<pre style="margin: 0;">+<span id="LC61" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">More precisely, we keep a *count* of how many times we've seen it.</span></span>
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<pre style="margin: 0;">+<span id="LC62" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">This is to account for</span></span>
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<pre style="margin: 0;">+<span id="LC63" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;"> data instance T (a,b) = MkT (T a) (T b)</span></span>
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<pre style="margin: 0;">+<span id="LC64" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">Then (#10482) if we have a type like</span></span>
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<pre style="margin: 0;">+<span id="LC65" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;"> T (Int,(Int,(Int,(Int,Int))))</span></span>
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<pre style="margin: 0;">+<span id="LC66" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">we can still unbox deeply enough during strictness analysis.</span></span>
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<pre style="margin: 0;">+<span id="LC67" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">We have to treat T as potentially recursive, but it's still</span></span>
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<pre style="margin: 0;">+<span id="LC68" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">good to be able to unwrap multiple layers.</span></span>
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<pre style="margin: 0;">+<span id="LC69" class="line" lang="haskell"></span>
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<pre style="margin: 0;">+<span id="LC70" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">The function that manages all this is checkRecTc.</span></span>
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<pre style="margin: 0;">+<span id="LC71" 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="LC72" class="line" lang="haskell"></span>
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<pre style="margin: 0;">+<span id="LC73" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">data</span> <span class="kt" style="color: #458; font-weight: 600;">RecTcChecker</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">RC</span> <span class="o" style="font-weight: 600;">!</span><span class="kt" style="color: #458; font-weight: 600;">Int</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">TyConEnv</span> <span class="kt" style="color: #458; font-weight: 600;">Int</span><span class="p">)</span></span>
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<pre style="margin: 0;">+<span id="LC74" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- The upper bound, and the number of times</span></span>
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75
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<pre style="margin: 0;">+<span id="LC75" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- we have encountered each TyCon</span></span>
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76
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<pre style="margin: 0;">+<span id="LC76" class="line" lang="haskell"></span>
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77
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<pre style="margin: 0;">+<span id="LC77" class="line" lang="haskell"><span class="cd">-- | Initialise a 'RecTcChecker' with 'defaultRecTcMaxBound'.</span></span>
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78
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<pre style="margin: 0;">+<span id="LC78" class="line" lang="haskell"><span class="n" style="color: #333;">initRecTc</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">RecTcChecker</span></span>
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79
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<pre style="margin: 0;">+<span id="LC79" class="line" lang="haskell"><span class="n" style="color: #333;">initRecTc</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">RC</span> <span class="n" style="color: #333;">defaultRecTcMaxBound</span> <span class="n" style="color: #333;">emptyTyConEnv</span></span>
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80
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<pre style="margin: 0;">+<span id="LC80" class="line" lang="haskell"></span>
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<pre style="margin: 0;">+<span id="LC81" class="line" lang="haskell"><span class="cd">-- | The default upper bound (100) for the number of times a 'RecTcChecker' is</span></span>
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82
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<pre style="margin: 0;">+<span id="LC82" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- allowed to encounter each 'TyCon'.</span></span>
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<pre style="margin: 0;">+<span id="LC83" class="line" lang="haskell"><span class="n" style="color: #333;">defaultRecTcMaxBound</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">Int</span></span>
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<pre style="margin: 0;">+<span id="LC84" class="line" lang="haskell"><span class="n" style="color: #333;">defaultRecTcMaxBound</span> <span class="o" style="font-weight: 600;">=</span> <span class="mi" style="color: #099;">100</span></span>
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85
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<pre style="margin: 0;">+<span id="LC85" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- Should we have a flag for this?</span></span>
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<pre style="margin: 0;">+<span id="LC86" class="line" lang="haskell"></span>
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<pre style="margin: 0;">+<span id="LC87" class="line" lang="haskell"><span class="cd">-- | Change the upper bound for the number of times a 'RecTcChecker' is allowed</span></span>
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88
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<pre style="margin: 0;">+<span id="LC88" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- to encounter each 'TyCon'.</span></span>
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<pre style="margin: 0;">+<span id="LC89" class="line" lang="haskell"><span class="n" style="color: #333;">setRecTcMaxBound</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">Int</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">RecTcChecker</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">RecTcChecker</span></span>
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90
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<pre style="margin: 0;">+<span id="LC90" class="line" lang="haskell"><span class="n" style="color: #333;">setRecTcMaxBound</span> <span class="n" style="color: #333;">new_bound</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">RC</span> <span class="n" style="color: #333;">_old_bound</span> <span class="n" style="color: #333;">rec_nts</span><span class="p">)</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">RC</span> <span class="n" style="color: #333;">new_bound</span> <span class="n" style="color: #333;">rec_nts</span></span>
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91
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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="LC92" class="line" lang="haskell"><span class="n" style="color: #333;">checkRecTc</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">RecTcChecker</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TyCon</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Maybe</span> <span class="kt" style="color: #458; font-weight: 600;">RecTcChecker</span></span>
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93
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<pre style="margin: 0;">+<span id="LC93" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- Nothing => Recursion detected</span></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;">-- Just rec_tcs => Keep going</span></span>
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95
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<pre style="margin: 0;">+<span id="LC95" class="line" lang="haskell"><span class="n" style="color: #333;">checkRecTc</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">RC</span> <span class="n" style="color: #333;">bound</span> <span class="n" style="color: #333;">rec_nts</span><span class="p">)</span> <span class="n" style="color: #333;">tc</span></span>
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96
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<pre style="margin: 0;">+<span id="LC96" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">case</span> <span class="n" style="color: #333;">lookupTyConEnv</span> <span class="n" style="color: #333;">rec_nts</span> <span class="n" style="color: #333;">tc</span> <span class="kr" style="font-weight: 600;">of</span></span>
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97
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<pre style="margin: 0;">+<span id="LC97" class="line" lang="haskell"> <span class="kt" style="color: #458; font-weight: 600;">Just</span> <span class="n" style="color: #333;">n</span> <span class="o" style="font-weight: 600;">|</span> <span class="n" style="color: #333;">n</span> <span class="o" style="font-weight: 600;">>=</span> <span class="n" style="color: #333;">bound</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Nothing</span></span>
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98
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<pre style="margin: 0;">+<span id="LC98" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">|</span> <span class="n" style="color: #333;">otherwise</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Just</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">RC</span> <span class="n" style="color: #333;">bound</span> <span class="p">(</span><span class="n" style="color: #333;">extendTyConEnv</span> <span class="n" style="color: #333;">rec_nts</span> <span class="n" style="color: #333;">tc</span> <span class="p">(</span><span class="n" style="color: #333;">n</span><span class="o" style="font-weight: 600;">+</span><span class="mi" style="color: #099;">1</span><span class="p">)))</span></span>
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99
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<pre style="margin: 0;">+<span id="LC99" class="line" lang="haskell"> <span class="kt" style="color: #458; font-weight: 600;">Nothing</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Just</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">RC</span> <span class="n" style="color: #333;">bound</span> <span class="p">(</span><span class="n" style="color: #333;">extendTyConEnv</span> <span class="n" style="color: #333;">rec_nts</span> <span class="n" style="color: #333;">tc</span> <span class="mi" style="color: #099;">1</span><span class="p">))</span></span></pre>
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<a href="https://gitlab.haskell.org/ghc/ghc/-/commit/ef950b19c04bc9c41920ecc9f94382653981d4bb#141eb4ec1dcef790aae10e538a00fe7bff164034"><strong>compiler/GHC/Core/TyCon/Set.hs</strong></a>
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<pre style="margin: 0;">+<span id="LC1" 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="LC2" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">(c) The University of Glasgow 2006</span></span>
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<pre style="margin: 0;">+<span id="LC3" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">(c) The GRASP/AQUA Project, Glasgow University, 1992-1998</span></span>
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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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<pre style="margin: 0;">+<span id="LC6" class="line" lang="haskell"></span>
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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, DeriveDataTypeable #-}</span></span>
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<pre style="margin: 0;">+<span id="LC8" class="line" lang="haskell"></span>
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<pre style="margin: 0;">+<span id="LC9" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">module</span> <span class="nn" style="color: #555;">GHC.Core.TyCon.Set</span> <span class="p">(</span></span>
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10
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<pre style="margin: 0;">+<span id="LC10" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- * TyCons set type</span></span>
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<pre style="margin: 0;">+<span id="LC11" class="line" lang="haskell"> <span class="kt" style="color: #458; font-weight: 600;">TyConSet</span><span class="p">,</span></span>
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12
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<pre style="margin: 0;">+<span id="LC12" class="line" lang="haskell"></span>
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13
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<pre style="margin: 0;">+<span id="LC13" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- ** Manipulating these sets</span></span>
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<pre style="margin: 0;">+<span id="LC14" class="line" lang="haskell"> <span class="nf" style="color: #900; font-weight: 600;">emptyTyConSet</span><span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">unitTyConSet</span><span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">mkTyConSet</span><span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">unionTyConSet</span><span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">unionTyConSets</span><span class="p">,</span></span>
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<pre style="margin: 0;">+<span id="LC15" class="line" lang="haskell"> <span class="nf" style="color: #900; font-weight: 600;">minusTyConSet</span><span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">elemTyConSet</span><span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">extendTyConSet</span><span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">extendTyConSetList</span><span class="p">,</span></span>
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<pre style="margin: 0;">+<span id="LC16" class="line" lang="haskell"> <span class="nf" style="color: #900; font-weight: 600;">delFromTyConSet</span><span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">delListFromTyConSet</span><span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">isEmptyTyConSet</span><span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">filterTyConSet</span><span class="p">,</span></span>
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<pre style="margin: 0;">+<span id="LC17" class="line" lang="haskell"> <span class="nf" style="color: #900; font-weight: 600;">intersectsTyConSet</span><span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">disjointTyConSet</span><span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">intersectTyConSet</span><span class="p">,</span></span>
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<pre style="margin: 0;">+<span id="LC18" class="line" lang="haskell"> <span class="nf" style="color: #900; font-weight: 600;">nameSetAny</span><span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">nameSetAll</span></span>
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<pre style="margin: 0;">+<span id="LC19" class="line" lang="haskell"> <span class="p">)</span> <span class="kr" style="font-weight: 600;">where</span></span>
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<pre style="margin: 0;">+<span id="LC20" class="line" lang="haskell"></span>
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<pre style="margin: 0;">+<span id="LC21" class="line" lang="haskell"><span class="o" style="font-weight: 600;">#</span><span class="n" style="color: #333;">include</span> <span class="s" style="color: #d14;">"HsVersions.h"</span></span>
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<pre style="margin: 0;">+<span id="LC22" class="line" lang="haskell"></span>
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<pre style="margin: 0;">+<span id="LC23" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Prelude</span></span>
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<pre style="margin: 0;">+<span id="LC24" class="line" lang="haskell"></span>
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<pre style="margin: 0;">+<span id="LC25" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Types.Unique.Set</span></span>
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<pre style="margin: 0;">+<span id="LC26" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Core.TyCon</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">TyCon</span><span class="p">)</span></span>
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<pre style="margin: 0;">+<span id="LC27" class="line" lang="haskell"></span>
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<pre style="margin: 0;">+<span id="LC28" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">type</span> <span class="kt" style="color: #458; font-weight: 600;">TyConSet</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">UniqSet</span> <span class="kt" style="color: #458; font-weight: 600;">TyCon</span></span>
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<pre style="margin: 0;">+<span id="LC29" class="line" lang="haskell"></span>
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<pre style="margin: 0;">+<span id="LC30" class="line" lang="haskell"><span class="n" style="color: #333;">emptyTyConSet</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">TyConSet</span></span>
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<pre style="margin: 0;">+<span id="LC31" class="line" lang="haskell"><span class="n" style="color: #333;">unitTyConSet</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">TyCon</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TyConSet</span></span>
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<pre style="margin: 0;">+<span id="LC32" class="line" lang="haskell"><span class="n" style="color: #333;">extendTyConSetList</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">TyConSet</span> <span class="o" style="font-weight: 600;">-></span> <span class="p">[</span><span class="kt" style="color: #458; font-weight: 600;">TyCon</span><span class="p">]</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TyConSet</span></span>
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<pre style="margin: 0;">+<span id="LC33" class="line" lang="haskell"><span class="n" style="color: #333;">extendTyConSet</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">TyConSet</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TyCon</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TyConSet</span></span>
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<pre style="margin: 0;">+<span id="LC34" class="line" lang="haskell"><span class="n" style="color: #333;">mkTyConSet</span> <span class="o" style="font-weight: 600;">::</span> <span class="p">[</span><span class="kt" style="color: #458; font-weight: 600;">TyCon</span><span class="p">]</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TyConSet</span></span>
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<pre style="margin: 0;">+<span id="LC35" class="line" lang="haskell"><span class="n" style="color: #333;">unionTyConSet</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">TyConSet</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TyConSet</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TyConSet</span></span>
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<pre style="margin: 0;">+<span id="LC36" class="line" lang="haskell"><span class="n" style="color: #333;">unionTyConSets</span> <span class="o" style="font-weight: 600;">::</span> <span class="p">[</span><span class="kt" style="color: #458; font-weight: 600;">TyConSet</span><span class="p">]</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TyConSet</span></span>
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<pre style="margin: 0;">+<span id="LC37" class="line" lang="haskell"><span class="n" style="color: #333;">minusTyConSet</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">TyConSet</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TyConSet</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TyConSet</span></span>
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<pre style="margin: 0;">+<span id="LC38" class="line" lang="haskell"><span class="n" style="color: #333;">elemTyConSet</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">TyCon</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TyConSet</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Bool</span></span>
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<pre style="margin: 0;">+<span id="LC39" class="line" lang="haskell"><span class="n" style="color: #333;">isEmptyTyConSet</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">TyConSet</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Bool</span></span>
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40
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<pre style="margin: 0;">+<span id="LC40" class="line" lang="haskell"><span class="n" style="color: #333;">delFromTyConSet</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">TyConSet</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TyCon</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TyConSet</span></span>
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41
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<pre style="margin: 0;">+<span id="LC41" class="line" lang="haskell"><span class="n" style="color: #333;">delListFromTyConSet</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">TyConSet</span> <span class="o" style="font-weight: 600;">-></span> <span class="p">[</span><span class="kt" style="color: #458; font-weight: 600;">TyCon</span><span class="p">]</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TyConSet</span></span>
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<pre style="margin: 0;">+<span id="LC42" class="line" lang="haskell"><span class="n" style="color: #333;">filterTyConSet</span> <span class="o" style="font-weight: 600;">::</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">TyCon</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Bool</span><span class="p">)</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TyConSet</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TyConSet</span></span>
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<pre style="margin: 0;">+<span id="LC43" class="line" lang="haskell"><span class="n" style="color: #333;">intersectTyConSet</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">TyConSet</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TyConSet</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TyConSet</span></span>
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<pre style="margin: 0;">+<span id="LC44" class="line" lang="haskell"><span class="n" style="color: #333;">intersectsTyConSet</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">TyConSet</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TyConSet</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Bool</span></span>
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<pre style="margin: 0;">+<span id="LC45" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- ^ True if there is a non-empty intersection.</span></span>
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<pre style="margin: 0;">+<span id="LC46" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- @s1 `intersectsTyConSet` s2@ doesn't compute @s2@ if @s1@ is empty</span></span>
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<pre style="margin: 0;">+<span id="LC47" class="line" lang="haskell"><span class="n" style="color: #333;">disjointTyConSet</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">TyConSet</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TyConSet</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Bool</span></span>
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<pre style="margin: 0;">+<span id="LC48" class="line" lang="haskell"></span>
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<pre style="margin: 0;">+<span id="LC49" class="line" lang="haskell"><span class="n" style="color: #333;">isEmptyTyConSet</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">isEmptyUniqSet</span></span>
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<pre style="margin: 0;">+<span id="LC50" class="line" lang="haskell"><span class="n" style="color: #333;">emptyTyConSet</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">emptyUniqSet</span></span>
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<pre style="margin: 0;">+<span id="LC51" class="line" lang="haskell"><span class="n" style="color: #333;">unitTyConSet</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">unitUniqSet</span></span>
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<pre style="margin: 0;">+<span id="LC52" class="line" lang="haskell"><span class="n" style="color: #333;">mkTyConSet</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">mkUniqSet</span></span>
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<pre style="margin: 0;">+<span id="LC53" class="line" lang="haskell"><span class="n" style="color: #333;">extendTyConSetList</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">addListToUniqSet</span></span>
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<pre style="margin: 0;">+<span id="LC54" class="line" lang="haskell"><span class="n" style="color: #333;">extendTyConSet</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">addOneToUniqSet</span></span>
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<pre style="margin: 0;">+<span id="LC55" class="line" lang="haskell"><span class="n" style="color: #333;">unionTyConSet</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">unionUniqSets</span></span>
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<pre style="margin: 0;">+<span id="LC56" class="line" lang="haskell"><span class="n" style="color: #333;">unionTyConSets</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">unionManyUniqSets</span></span>
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<pre style="margin: 0;">+<span id="LC57" class="line" lang="haskell"><span class="n" style="color: #333;">minusTyConSet</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">minusUniqSet</span></span>
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<pre style="margin: 0;">+<span id="LC58" class="line" lang="haskell"><span class="n" style="color: #333;">elemTyConSet</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">elementOfUniqSet</span></span>
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<pre style="margin: 0;">+<span id="LC59" class="line" lang="haskell"><span class="n" style="color: #333;">delFromTyConSet</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">delOneFromUniqSet</span></span>
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<pre style="margin: 0;">+<span id="LC60" class="line" lang="haskell"><span class="n" style="color: #333;">filterTyConSet</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">filterUniqSet</span></span>
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<pre style="margin: 0;">+<span id="LC61" class="line" lang="haskell"><span class="n" style="color: #333;">intersectTyConSet</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">intersectUniqSets</span></span>
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<pre style="margin: 0;">+<span id="LC62" class="line" lang="haskell"><span class="n" style="color: #333;">disjointTyConSet</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">disjointUniqSets</span></span>
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<pre style="margin: 0;">+<span id="LC63" class="line" lang="haskell"></span>
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<pre style="margin: 0;">+<span id="LC64" class="line" lang="haskell"></span>
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<pre style="margin: 0;">+<span id="LC65" class="line" lang="haskell"><span class="n" style="color: #333;">delListFromTyConSet</span> <span class="n" style="color: #333;">set</span> <span class="n" style="color: #333;">ns</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">foldl'</span> <span class="n" style="color: #333;">delFromTyConSet</span> <span class="n" style="color: #333;">set</span> <span class="n" style="color: #333;">ns</span></span>
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<pre style="margin: 0;">+<span id="LC66" class="line" lang="haskell"></span>
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<pre style="margin: 0;">+<span id="LC67" class="line" lang="haskell"><span class="n" style="color: #333;">intersectsTyConSet</span> <span class="n" style="color: #333;">s1</span> <span class="n" style="color: #333;">s2</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">not</span> <span class="p">(</span><span class="n" style="color: #333;">isEmptyTyConSet</span> <span class="p">(</span><span class="n" style="color: #333;">s1</span> <span class="p">`</span><span class="n" style="color: #333;">intersectTyConSet</span><span class="p">`</span> <span class="n" style="color: #333;">s2</span><span class="p">))</span></span>
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68
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<pre style="margin: 0;">+<span id="LC68" class="line" lang="haskell"></span>
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<pre style="margin: 0;">+<span id="LC69" class="line" lang="haskell"><span class="n" style="color: #333;">nameSetAny</span> <span class="o" style="font-weight: 600;">::</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">TyCon</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Bool</span><span class="p">)</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TyConSet</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Bool</span></span>
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<pre style="margin: 0;">+<span id="LC70" class="line" lang="haskell"><span class="n" style="color: #333;">nameSetAny</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">uniqSetAny</span></span>
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<pre style="margin: 0;">+<span id="LC71" class="line" lang="haskell"></span>
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<pre style="margin: 0;">+<span id="LC72" class="line" lang="haskell"><span class="n" style="color: #333;">nameSetAll</span> <span class="o" style="font-weight: 600;">::</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">TyCon</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Bool</span><span class="p">)</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TyConSet</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Bool</span></span>
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<pre style="margin: 0;">+<span id="LC73" class="line" lang="haskell"><span class="n" style="color: #333;">nameSetAll</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">uniqSetAll</span></span></pre>
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<a href="https://gitlab.haskell.org/ghc/ghc/-/commit/ef950b19c04bc9c41920ecc9f94382653981d4bb#9095b3c5485a1f2f18a0a43346b7a49dfdd1f65d"><strong>compiler/GHC/HsToCore/Pmc/Solver.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">@@ -67,6 +67,7 @@ import GHC.Core.ConLike</td>
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<pre style="margin: 0;"> <span id="LC67" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Core.DataCon</span></span>
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<pre style="margin: 0;"> <span id="LC68" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Core.PatSyn</span></span>
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<pre style="margin: 0;"> <span id="LC69" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Core.TyCon</span></span>
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<pre style="margin: 0;">+<span id="LC70" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Core.TyCon.RecWalk</span></span>
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<pre style="margin: 0;"> <span id="LC71" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Builtin.Types</span></span>
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71
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72
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<pre style="margin: 0;"> <span id="LC72" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Builtin.Types.Prim</span> <span class="p">(</span><span class="nf" style="color: #900; font-weight: 600;">tYPETyCon</span><span class="p">)</span></span>
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72
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73
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<pre style="margin: 0;"> <span id="LC73" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Core.TyCo.Rep</span></span>
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<a href="https://gitlab.haskell.org/ghc/ghc/-/commit/ef950b19c04bc9c41920ecc9f94382653981d4bb#08a3d553a8ca7a753d77697815b63cd85e7dfbd6"><strong>compiler/GHC/Tc/Gen/Foreign.hs</strong></a>
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<td class="diff-line-num unfold js-unfold new_line" data-linenumber="58" 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">@@ -58,6 +58,7 @@ import GHC.Types.Name</td>
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58
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<pre style="margin: 0;"> <span id="LC58" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Types.Name.Reader</span></span>
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59
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<pre style="margin: 0;"> <span id="LC59" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Core.DataCon</span></span>
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60
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<pre style="margin: 0;"> <span id="LC60" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Core.TyCon</span></span>
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61
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<pre style="margin: 0;">+<span id="LC61" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Core.TyCon.RecWalk</span></span>
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61
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62
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<pre style="margin: 0;"> <span id="LC62" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Tc.Utils.TcType</span></span>
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62
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63
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<pre style="margin: 0;"> <span id="LC63" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Builtin.Names</span></span>
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63
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64
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<pre style="margin: 0;"> <span id="LC64" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Driver.Session</span></span>
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<a href="https://gitlab.haskell.org/ghc/ghc/-/commit/ef950b19c04bc9c41920ecc9f94382653981d4bb#0c6b585a8a21f8340a85ca2cef89c4b1bf5a8953"><strong>compiler/GHC/Tc/Solver/Monad.hs</strong></a>
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<td class="diff-line-num unfold js-unfold new_line" data-linenumber="174" 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">@@ -174,6 +174,7 @@ import GHC.Core.Predicate</td>
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174
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<pre style="margin: 0;"> <span id="LC174" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Types.Unique</span></span>
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<pre style="margin: 0;"> <span id="LC175" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Types.Unique.FM</span></span>
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<pre style="margin: 0;"> <span id="LC176" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Types.Unique.DFM</span></span>
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<pre style="margin: 0;">+<span id="LC177" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Core.TyCon.Env</span></span>
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177
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178
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<pre style="margin: 0;"> <span id="LC178" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Data.Maybe</span></span>
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178
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179
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<pre style="margin: 0;"> <span id="LC179" class="line" lang="haskell"></span>
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179
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<pre style="margin: 0;"> <span id="LC180" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Core.Map</span></span>
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<td class="diff-line-num unfold js-unfold new_line" data-linenumber="2641" 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">@@ -2640,7 +2641,7 @@ delFunEq :: FunEqMap a -> TyCon -> [Type] -> FunEqMap a</td>
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2640
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2641
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<pre style="margin: 0;"> <span id="LC2641" class="line" lang="haskell"><span class="n" style="color: #333;">delFunEq</span> <span class="n" style="color: #333;">m</span> <span class="n" style="color: #333;">tc</span> <span class="n" style="color: #333;">tys</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">delTcApp</span> <span class="n" style="color: #333;">m</span> <span class="p">(</span><span class="n" style="color: #333;">getUnique</span> <span class="n" style="color: #333;">tc</span><span class="p">)</span> <span class="n" style="color: #333;">tys</span></span>
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2641
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2642
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<pre style="margin: 0;"> <span id="LC2642" class="line" lang="haskell"></span>
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2642
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2643
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<pre style="margin: 0;"> <span id="LC2643" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">------------------------------</span></span>
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2643
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<pre style="margin: 0;">-<span id="LC2643" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">type</span> <span class="kt" style="color: #458; font-weight: 600;">ExactFunEqMap</span> <span class="n" style="color: #333;">a</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;"><span class="idiff left">UniqFM</span></span><span class="idiff"> </span><span class="kt" style="color: #458; font-weight: 600;"><span class="idiff right">TyCon</span></span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">ListMap</span> <span class="kt" style="color: #458; font-weight: 600;">TypeMap</span> <span class="n" style="color: #333;">a</span><span class="p">)</span></span>
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<pre style="margin: 0;">+<span id="LC2644" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">type</span> <span class="kt" style="color: #458; font-weight: 600;">ExactFunEqMap</span> <span class="n" style="color: #333;">a</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;"><span class="idiff left right">TyConEnv</span></span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">ListMap</span> <span class="kt" style="color: #458; font-weight: 600;">TypeMap</span> <span class="n" style="color: #333;">a</span><span class="p">)</span></span>
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<pre style="margin: 0;"> <span id="LC2645" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC2646" class="line" lang="haskell"><span class="n" style="color: #333;">emptyExactFunEqs</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">ExactFunEqMap</span> <span class="n" style="color: #333;">a</span></span>
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<pre style="margin: 0;"> <span id="LC2647" class="line" lang="haskell"><span class="n" style="color: #333;">emptyExactFunEqs</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">emptyUFM</span></span>
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<a href="https://gitlab.haskell.org/ghc/ghc/-/commit/ef950b19c04bc9c41920ecc9f94382653981d4bb#5ed3ecf19a26af612b8100b2639f8e153f580fe9"><strong>compiler/GHC/Tc/TyCl/Utils.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">@@ -50,12 +50,13 @@ import GHC.Core.ConLike</td>
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<pre style="margin: 0;"> <span id="LC50" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Core.DataCon</span></span>
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<pre style="margin: 0;"> <span id="LC51" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Types.Name</span></span>
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<pre style="margin: 0;"> <span id="LC52" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Types.Name.Env</span></span>
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<pre style="margin: 0;">-<span id="LC53" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Types.Name.Set</span> <span class="k" style="font-weight: 600;">hiding</span> <span class="p">(</span><span class="nf" style="color: #900; font-weight: 600;">unitFV</span><span class="p">)</span></span>
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<pre style="margin: 0;"> <span id="LC53" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Types.Name.Reader</span> <span class="p">(</span> <span class="nf" style="color: #900; font-weight: 600;">mkVarUnqual</span> <span class="p">)</span></span>
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<pre style="margin: 0;"> <span id="LC54" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Types.Id</span></span>
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<pre style="margin: 0;"> <span id="LC55" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Types.Id.Info</span></span>
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<pre style="margin: 0;"> <span id="LC56" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Types.Var.Env</span></span>
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<pre style="margin: 0;"> <span id="LC57" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Types.Var.Set</span></span>
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<pre style="margin: 0;">+<span id="LC58" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Types.Unique.Set</span></span>
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<pre style="margin: 0;">+<span id="LC59" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Core.TyCon.Set</span></span>
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<pre style="margin: 0;"> <span id="LC60" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Core.Coercion</span> <span class="p">(</span> <span class="nf" style="color: #900; font-weight: 600;">ltRole</span> <span class="p">)</span></span>
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<pre style="margin: 0;"> <span id="LC61" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Types.Basic</span></span>
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<pre style="margin: 0;"> <span id="LC62" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Types.SrcLoc</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">@@ -156,7 +157,11 @@ newtype SynCycleM a = SynCycleM {</td>
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<pre style="margin: 0;"> <span id="LC157" class="line" lang="haskell"> <span class="n" style="color: #333;">runSynCycleM</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">SynCycleState</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Either</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">SrcSpan</span><span class="p">,</span> <span class="kt" style="color: #458; font-weight: 600;">SDoc</span><span class="p">)</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;">SynCycleState</span><span class="p">)</span> <span class="p">}</span></span>
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<pre style="margin: 0;"> <span id="LC158" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">deriving</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Functor</span><span class="p">)</span></span>
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158
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<pre style="margin: 0;"> <span id="LC159" class="line" lang="haskell"></span>
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<pre style="margin: 0;">-<span id="LC159" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">type</span> <span class="kt" style="color: #458; font-weight: 600;">SynCycleState</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">NameSet</span></span>
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160
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<pre style="margin: 0;">+<span id="LC160" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- TODO: TyConSet is implemented as IntMap over uniques.</span></span>
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<pre style="margin: 0;">+<span id="LC161" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- But we could get away with something based on IntSet</span></span>
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162
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<pre style="margin: 0;">+<span id="LC162" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- since we only check membershib, but never extract the</span></span>
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<pre style="margin: 0;">+<span id="LC163" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- elements.</span></span>
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<pre style="margin: 0;">+<span id="LC164" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">type</span> <span class="kt" style="color: #458; font-weight: 600;">SynCycleState</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">TyConSet</span></span>
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165
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<pre style="margin: 0;"> <span id="LC165" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC166" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">instance</span> <span class="kt" style="color: #458; font-weight: 600;">Applicative</span> <span class="kt" style="color: #458; font-weight: 600;">SynCycleM</span> <span class="kr" style="font-weight: 600;">where</span></span>
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162
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<pre style="margin: 0;"> <span id="LC167" class="line" lang="haskell"> <span class="n" style="color: #333;">pure</span> <span class="n" style="color: #333;">x</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">SynCycleM</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;">state</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Right</span> <span class="p">(</span><span class="n" style="color: #333;">x</span><span class="p">,</span> <span class="n" style="color: #333;">state</span><span class="p">)</span></span>
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<td class="diff-line-num unfold js-unfold new_line" data-linenumber="179" 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">@@ -174,12 +179,12 @@ failSynCycleM loc err = SynCycleM $ \_ -> Left (loc, err)</td>
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<pre style="margin: 0;"> <span id="LC179" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC180" class="line" lang="haskell"><span class="cd">-- | Test if a 'Name' is acyclic, short-circuiting if we've</span></span>
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<pre style="margin: 0;"> <span id="LC181" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- seen it already.</span></span>
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<pre style="margin: 0;">-<span id="LC177" class="line" lang="haskell"><span class="n" style="color: #333;">check<span class="idiff left">NameIsAcyclic</span></span><span class="idiff"> </span><span class="o" style="font-weight: 600;"><span class="idiff">::</span></span><span class="idiff"> </span><span class="kt" style="color: #458; font-weight: 600;"><span class="idiff right">Name</span></span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">SynCycleM</span> <span class="nb" style="color: #0086b3;">()</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">SynCycleM</span> <span class="nb" style="color: #0086b3;">()</span></span>
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178
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<pre style="margin: 0;">-<span id="LC178" class="line" lang="haskell"><span class="n" style="color: #333;">check<span class="idiff left">NameIsAcyclic</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff right">n</span></span> <span class="n" style="color: #333;">m</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">SynCycleM</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;">s</span> <span class="o" style="font-weight: 600;">-></span></span>
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179
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<pre style="margin: 0;">-<span id="LC179" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">if</span> <span class="n" style="color: #333;"><span class="idiff left">n</span></span><span class="idiff"> </span><span class="p"><span class="idiff">`</span></span><span class="n" style="color: #333;"><span class="idiff right">elemName</span>Set</span><span class="p">`</span> <span class="n" style="color: #333;">s</span></span>
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182
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<pre style="margin: 0;">+<span id="LC182" class="line" lang="haskell"><span class="n" style="color: #333;">check<span class="idiff left">TyConIsAcyclic</span></span><span class="idiff"> </span><span class="o" style="font-weight: 600;"><span class="idiff">::</span></span><span class="idiff"> </span><span class="kt" style="color: #458; font-weight: 600;"><span class="idiff right">TyCon</span></span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">SynCycleM</span> <span class="nb" style="color: #0086b3;">()</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">SynCycleM</span> <span class="nb" style="color: #0086b3;">()</span></span>
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183
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<pre style="margin: 0;">+<span id="LC183" class="line" lang="haskell"><span class="n" style="color: #333;">check<span class="idiff left">TyConIsAcyclic</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff right">tc</span></span> <span class="n" style="color: #333;">m</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">SynCycleM</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;">s</span> <span class="o" style="font-weight: 600;">-></span></span>
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184
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<pre style="margin: 0;">+<span id="LC184" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">if</span> <span class="n" style="color: #333;"><span class="idiff left">tc</span></span><span class="idiff"> </span><span class="p"><span class="idiff">`</span></span><span class="n" style="color: #333;"><span class="idiff right">elemTyCon</span>Set</span><span class="p">`</span> <span class="n" style="color: #333;">s</span></span>
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185
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<pre style="margin: 0;"> <span id="LC185" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">then</span> <span class="kt" style="color: #458; font-weight: 600;">Right</span> <span class="p">(</span><span class="nb" style="color: #0086b3;">()</span><span class="p">,</span> <span class="n" style="color: #333;">s</span><span class="p">)</span> <span class="c1" style="color: #998; font-style: italic;">-- short circuit</span></span>
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181
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186
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<pre style="margin: 0;"> <span id="LC186" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">else</span> <span class="kr" style="font-weight: 600;">case</span> <span class="n" style="color: #333;">runSynCycleM</span> <span class="n" style="color: #333;">m</span> <span class="n" style="color: #333;">s</span> <span class="kr" style="font-weight: 600;">of</span></span>
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182
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<pre style="margin: 0;">-<span id="LC182" class="line" lang="haskell"> <span class="kt" style="color: #458; font-weight: 600;">Right</span> <span class="p">(</span><span class="nb" style="color: #0086b3;">()</span><span class="p">,</span> <span class="n" style="color: #333;">s'</span><span class="p">)</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Right</span> <span class="p">(</span><span class="nb" style="color: #0086b3;">()</span><span class="p">,</span> <span class="n" style="color: #333;">extend<span class="idiff left">NameSet</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">s'</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff right">n</span></span><span class="p">)</span></span>
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187
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<pre style="margin: 0;">+<span id="LC187" class="line" lang="haskell"> <span class="kt" style="color: #458; font-weight: 600;">Right</span> <span class="p">(</span><span class="nb" style="color: #0086b3;">()</span><span class="p">,</span> <span class="n" style="color: #333;">s'</span><span class="p">)</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Right</span> <span class="p">(</span><span class="nb" style="color: #0086b3;">()</span><span class="p">,</span> <span class="n" style="color: #333;">extend<span class="idiff left">TyConSet</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">s'</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff right">tc</span></span><span class="p">)</span></span>
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183
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188
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<pre style="margin: 0;"> <span id="LC188" class="line" lang="haskell"> <span class="kt" style="color: #458; font-weight: 600;">Left</span> <span class="n" style="color: #333;">err</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Left</span> <span class="n" style="color: #333;">err</span></span>
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184
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189
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<pre style="margin: 0;"> <span id="LC189" class="line" lang="haskell"></span>
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185
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190
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<pre style="margin: 0;"> <span id="LC190" class="line" lang="haskell"><span class="cd">-- | Checks if any of the passed in 'TyCon's have cycles.</span></span>
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<td class="diff-line-num unfold js-unfold new_line" data-linenumber="194" 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">@@ -189,7 +194,7 @@ checkNameIsAcyclic n m = SynCycleM $ \s -></td>
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189
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194
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<pre style="margin: 0;"> <span id="LC194" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- can give better error messages.</span></span>
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190
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195
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<pre style="margin: 0;"> <span id="LC195" class="line" lang="haskell"><span class="n" style="color: #333;">checkSynCycles</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">Unit</span> <span class="o" style="font-weight: 600;">-></span> <span class="p">[</span><span class="kt" style="color: #458; font-weight: 600;">TyCon</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;">LTyClDecl</span> <span class="kt" style="color: #458; font-weight: 600;">GhcRn</span><span class="p">]</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TcM</span> <span class="nb" style="color: #0086b3;">()</span></span>
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191
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<pre style="margin: 0;"> <span id="LC196" class="line" lang="haskell"><span class="n" style="color: #333;">checkSynCycles</span> <span class="n" style="color: #333;">this_uid</span> <span class="n" style="color: #333;">tcs</span> <span class="n" style="color: #333;">tyclds</span> <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">do</span></span>
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192
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<pre style="margin: 0;">-<span id="LC192" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">case</span> <span class="n" style="color: #333;">runSynCycleM</span> <span class="p">(</span><span class="n" style="color: #333;">mapM_</span> <span class="p">(</span><span class="n" style="color: #333;">go</span> <span class="n" style="color: #333;">empty<span class="idiff left">NameSet</span></span><span class="idiff"> </span><span class="kt" style="color: #458; 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">tcs</span></span><span class="p"><span class="idiff">)</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff right">emptyName</span>Set</span> <span class="kr" style="font-weight: 600;">of</span></span>
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<pre style="margin: 0;">+<span id="LC197" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">case</span> <span class="n" style="color: #333;">runSynCycleM</span> <span class="p">(</span><span class="n" style="color: #333;">mapM_</span> <span class="p">(</span><span class="n" style="color: #333;">go</span> <span class="n" style="color: #333;">empty<span class="idiff left">TyConSet</span></span><span class="idiff"> </span><span class="kt" style="color: #458; 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">tcs</span></span><span class="p"><span class="idiff">)</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff right">emptyTyCon</span>Set</span> <span class="kr" style="font-weight: 600;">of</span></span>
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193
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198
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<pre style="margin: 0;"> <span id="LC198" class="line" lang="haskell"> <span class="kt" style="color: #458; font-weight: 600;">Left</span> <span class="p">(</span><span class="n" style="color: #333;">loc</span><span class="p">,</span> <span class="n" style="color: #333;">err</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;">loc</span> <span class="o" style="font-weight: 600;">$</span> <span class="n" style="color: #333;">failWithTc</span> <span class="n" style="color: #333;">err</span></span>
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194
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199
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<pre style="margin: 0;"> <span id="LC199" class="line" lang="haskell"> <span class="kt" style="color: #458; font-weight: 600;">Right</span> <span class="kr" style="font-weight: 600;">_</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">return</span> <span class="nb" style="color: #0086b3;">()</span></span>
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195
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200
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<pre style="margin: 0;"> <span id="LC200" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">where</span></span>
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<td class="diff-line-num unfold js-unfold new_line" data-linenumber="203" 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">@@ -198,15 +203,15 @@ checkSynCycles this_uid tcs tyclds = do</td>
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198
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203
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<pre style="margin: 0;"> <span id="LC203" class="line" lang="haskell"></span>
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199
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204
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<pre style="margin: 0;"> <span id="LC204" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- Short circuit if we've already seen this Name and concluded</span></span>
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200
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205
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<pre style="margin: 0;"> <span id="LC205" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- it was acyclic.</span></span>
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<pre style="margin: 0;">-<span id="LC201" class="line" lang="haskell"> <span class="n" style="color: #333;">go</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;"><span class="idiff left right">Name</span>Set</span> <span class="o" style="font-weight: 600;">-></span> <span class="p">[</span><span class="kt" style="color: #458; font-weight: 600;">TyCon</span><span class="p">]</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TyCon</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">SynCycleM</span> <span class="nb" style="color: #0086b3;">()</span></span>
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206
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<pre style="margin: 0;">+<span id="LC206" class="line" lang="haskell"> <span class="n" style="color: #333;">go</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;"><span class="idiff left right">TyCon</span>Set</span> <span class="o" style="font-weight: 600;">-></span> <span class="p">[</span><span class="kt" style="color: #458; font-weight: 600;">TyCon</span><span class="p">]</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TyCon</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">SynCycleM</span> <span class="nb" style="color: #0086b3;">()</span></span>
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<pre style="margin: 0;"> <span id="LC207" class="line" lang="haskell"> <span class="n" style="color: #333;">go</span> <span class="n" style="color: #333;">so_far</span> <span class="n" style="color: #333;">seen_tcs</span> <span class="n" style="color: #333;">tc</span> <span class="o" style="font-weight: 600;">=</span></span>
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203
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<pre style="margin: 0;">-<span id="LC203" class="line" lang="haskell"> <span class="n" style="color: #333;">check<span class="idiff left">NameIsAcyclic</span></span><span class="idiff"> </span><span class="p"><span class="idiff">(</span></span><span class="n" style="color: #333;"><span class="idiff">tyConName</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">tc</span></span><span class="p"><span class="idiff right">)</span></span> <span class="o" style="font-weight: 600;">$</span> <span class="n" style="color: #333;">go'</span> <span class="n" style="color: #333;">so_far</span> <span class="n" style="color: #333;">seen_tcs</span> <span class="n" style="color: #333;">tc</span></span>
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208
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<pre style="margin: 0;">+<span id="LC208" class="line" lang="haskell"> <span class="n" style="color: #333;">check<span class="idiff left">TyConIsAcyclic</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff right">tc</span></span> <span class="o" style="font-weight: 600;">$</span> <span class="n" style="color: #333;">go'</span> <span class="n" style="color: #333;">so_far</span> <span class="n" style="color: #333;">seen_tcs</span> <span class="n" style="color: #333;">tc</span></span>
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204
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209
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<pre style="margin: 0;"> <span id="LC209" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC210" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- Expand type synonyms, complaining if you find the same</span></span>
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206
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<pre style="margin: 0;"> <span id="LC211" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- type synonym a second time.</span></span>
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207
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<pre style="margin: 0;">-<span id="LC207" class="line" lang="haskell"> <span class="n" style="color: #333;">go'</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;"><span class="idiff left right">Name</span>Set</span> <span class="o" style="font-weight: 600;">-></span> <span class="p">[</span><span class="kt" style="color: #458; font-weight: 600;">TyCon</span><span class="p">]</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TyCon</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">SynCycleM</span> <span class="nb" style="color: #0086b3;">()</span></span>
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212
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<pre style="margin: 0;">+<span id="LC212" class="line" lang="haskell"> <span class="n" style="color: #333;">go'</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;"><span class="idiff left right">TyCon</span>Set</span> <span class="o" style="font-weight: 600;">-></span> <span class="p">[</span><span class="kt" style="color: #458; font-weight: 600;">TyCon</span><span class="p">]</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TyCon</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">SynCycleM</span> <span class="nb" style="color: #0086b3;">()</span></span>
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<pre style="margin: 0;"> <span id="LC213" class="line" lang="haskell"> <span class="n" style="color: #333;">go'</span> <span class="n" style="color: #333;">so_far</span> <span class="n" style="color: #333;">seen_tcs</span> <span class="n" style="color: #333;">tc</span></span>
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<pre style="margin: 0;">-<span id="LC209" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">|</span> <span class="n" style="color: #333;"><span class="idiff left">n</span></span><span class="idiff"> </span><span class="p"><span class="idiff">`</span></span><span class="n" style="color: #333;"><span class="idiff right">elemName</span>Set</span><span class="p">`</span> <span class="n" style="color: #333;">so_far</span></span>
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<pre style="margin: 0;">+<span id="LC214" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">|</span> <span class="n" style="color: #333;"><span class="idiff left">tc</span></span><span class="idiff"> </span><span class="p"><span class="idiff">`</span></span><span class="n" style="color: #333;"><span class="idiff right">elemTyCon</span>Set</span><span class="p">`</span> <span class="n" style="color: #333;">so_far</span></span>
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210
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<pre style="margin: 0;"> <span id="LC215" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">failSynCycleM</span> <span class="p">(</span><span class="n" style="color: #333;">getSrcSpan</span> <span class="p">(</span><span class="n" style="color: #333;">head</span> <span class="n" style="color: #333;">seen_tcs</span><span class="p">))</span> <span class="o" style="font-weight: 600;">$</span></span>
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<pre style="margin: 0;"> <span id="LC216" class="line" lang="haskell"> <span class="n" style="color: #333;">sep</span> <span class="p">[</span> <span class="n" style="color: #333;">text</span> <span class="s" style="color: #d14;">"Cycle in type synonym declarations:"</span></span>
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<pre style="margin: 0;"> <span id="LC217" class="line" lang="haskell"> <span class="p">,</span> <span class="n" style="color: #333;">nest</span> <span class="mi" style="color: #099;">2</span> <span class="p">(</span><span class="n" style="color: #333;">vcat</span> <span class="p">(</span><span class="n" style="color: #333;">map</span> <span class="n" style="color: #333;">ppr_decl</span> <span class="n" style="color: #333;">seen_tcs</span><span class="p">))</span> <span class="p">]</span></span>
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<td class="diff-line-num unfold js-unfold new_line" data-linenumber="226" 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">@@ -221,7 +226,7 @@ checkSynCycles this_uid tcs tyclds = do</td>
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<pre style="margin: 0;"> <span id="LC226" class="line" lang="haskell"> <span class="n" style="color: #333;">isInteractiveModule</span> <span class="n" style="color: #333;">mod</span><span class="p">)</span></span>
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<pre style="margin: 0;"> <span id="LC227" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">return</span> <span class="nb" style="color: #0086b3;">()</span></span>
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<pre style="margin: 0;"> <span id="LC228" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">|</span> <span class="kt" style="color: #458; font-weight: 600;">Just</span> <span class="n" style="color: #333;">ty</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">synTyConRhs_maybe</span> <span class="n" style="color: #333;">tc</span> <span class="o" style="font-weight: 600;">=</span></span>
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<pre style="margin: 0;">-<span id="LC224" class="line" lang="haskell"> <span class="n" style="color: #333;">go_ty</span> <span class="p">(</span><span class="n" style="color: #333;">extend<span class="idiff left">NameSet</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">so_far</span></span><span class="idiff"> </span><span class="p"><span class="idiff">(</span></span><span class="n" style="color: #333;"><span class="idiff">tyConName</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">tc</span></span><span class="p"><span class="idiff right">)</span>)</span> <span class="p">(</span><span class="n" style="color: #333;">tc</span><span class="o" style="font-weight: 600;">:</span><span class="n" style="color: #333;">seen_tcs</span><span class="p">)</span> <span class="n" style="color: #333;">ty</span></span>
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<pre style="margin: 0;">+<span id="LC229" class="line" lang="haskell"> <span class="n" style="color: #333;">go_ty</span> <span class="p">(</span><span class="n" style="color: #333;">extend<span class="idiff left">TyConSet</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">so_far</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff right">tc</span></span><span class="p">)</span> <span class="p">(</span><span class="n" style="color: #333;">tc</span><span class="o" style="font-weight: 600;">:</span><span class="n" style="color: #333;">seen_tcs</span><span class="p">)</span> <span class="n" style="color: #333;">ty</span></span>
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<pre style="margin: 0;"> <span id="LC230" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">|</span> <span class="n" style="color: #333;">otherwise</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">return</span> <span class="nb" style="color: #0086b3;">()</span></span>
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231
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<pre style="margin: 0;"> <span id="LC231" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">where</span></span>
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<pre style="margin: 0;"> <span id="LC232" class="line" lang="haskell"> <span class="n" style="color: #333;">n</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">tyConName</span> <span class="n" style="color: #333;">tc</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">@@ -234,7 +239,7 @@ checkSynCycles this_uid tcs tyclds = do</td>
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<pre style="margin: 0;"> <span id="LC239" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">where</span></span>
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<pre style="margin: 0;"> <span id="LC240" class="line" lang="haskell"> <span class="n" style="color: #333;">n</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">tyConName</span> <span class="n" style="color: #333;">tc</span></span>
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<pre style="margin: 0;"> <span id="LC241" class="line" lang="haskell"></span>
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<pre style="margin: 0;">-<span id="LC237" class="line" lang="haskell"> <span class="n" style="color: #333;">go_ty</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;"><span class="idiff left right">Name</span>Set</span> <span class="o" style="font-weight: 600;">-></span> <span class="p">[</span><span class="kt" style="color: #458; font-weight: 600;">TyCon</span><span class="p">]</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Type</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">SynCycleM</span> <span class="nb" style="color: #0086b3;">()</span></span>
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<pre style="margin: 0;">+<span id="LC242" class="line" lang="haskell"> <span class="n" style="color: #333;">go_ty</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;"><span class="idiff left right">TyCon</span>Set</span> <span class="o" style="font-weight: 600;">-></span> <span class="p">[</span><span class="kt" style="color: #458; font-weight: 600;">TyCon</span><span class="p">]</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Type</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">SynCycleM</span> <span class="nb" style="color: #0086b3;">()</span></span>
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<pre style="margin: 0;"> <span id="LC243" class="line" lang="haskell"> <span class="n" style="color: #333;">go_ty</span> <span class="n" style="color: #333;">so_far</span> <span class="n" style="color: #333;">seen_tcs</span> <span class="n" style="color: #333;">ty</span> <span class="o" style="font-weight: 600;">=</span></span>
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<pre style="margin: 0;"> <span id="LC244" class="line" lang="haskell"> <span class="n" style="color: #333;">mapM_</span> <span class="p">(</span><span class="n" style="color: #333;">go</span> <span class="n" style="color: #333;">so_far</span> <span class="n" style="color: #333;">seen_tcs</span><span class="p">)</span> <span class="p">(</span><span class="n" style="color: #333;">synonymTyConsOfType</span> <span class="n" style="color: #333;">ty</span><span class="p">)</span></span>
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<pre style="margin: 0;"> <span id="LC245" 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">@@ -284,11 +289,13 @@ and now expand superclasses for constraint (C Id):</td>
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<pre style="margin: 0;"> <span id="LC289" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">Each step expands superclasses one layer, and clearly does not terminate.</span></span>
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<pre style="margin: 0;"> <span id="LC290" 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="LC291" class="line" lang="haskell"></span>
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<pre style="margin: 0;">+<span id="LC292" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">type</span> <span class="kt" style="color: #458; font-weight: 600;">ClassSet</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">UniqSet</span> <span class="kt" style="color: #458; font-weight: 600;">Class</span></span>
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<pre style="margin: 0;">+<span id="LC293" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC294" class="line" lang="haskell"><span class="n" style="color: #333;">checkClassCycles</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">Class</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Maybe</span> <span class="kt" style="color: #458; font-weight: 600;">SDoc</span></span>
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<pre style="margin: 0;"> <span id="LC295" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- Nothing <=> ok</span></span>
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<pre style="margin: 0;"> <span id="LC296" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- Just err <=> possible cycle error</span></span>
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290
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<pre style="margin: 0;"> <span id="LC297" class="line" lang="haskell"><span class="n" style="color: #333;">checkClassCycles</span> <span class="n" style="color: #333;">cls</span></span>
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<pre style="margin: 0;">-<span id="LC291" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">do</span> <span class="p">{</span> <span class="p">(</span><span class="n" style="color: #333;">definite_cycle</span><span class="p">,</span> <span class="n" style="color: #333;">err</span><span class="p">)</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">go</span> <span class="p">(</span><span class="n" style="color: #333;">unit<span class="idiff left">NameSet</span></span><span class="idiff"> </span><span class="p"><span class="idiff">(</span></span><span class="n" style="color: #333;"><span class="idiff">getName</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">cls</span></span><span class="p"><span class="idiff right">)</span>)</span></span>
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298
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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="kr" style="font-weight: 600;">do</span> <span class="p">{</span> <span class="p">(</span><span class="n" style="color: #333;">definite_cycle</span><span class="p">,</span> <span class="n" style="color: #333;">err</span><span class="p">)</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">go</span> <span class="p">(</span><span class="n" style="color: #333;">unit<span class="idiff left">UniqSet</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff right">cls</span></span><span class="p">)</span></span>
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292
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<pre style="margin: 0;"> <span id="LC299" class="line" lang="haskell"> <span class="n" style="color: #333;">cls</span> <span class="p">(</span><span class="n" style="color: #333;">mkTyVarTys</span> <span class="p">(</span><span class="n" style="color: #333;">classTyVars</span> <span class="n" style="color: #333;">cls</span><span class="p">))</span></span>
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293
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300
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<pre style="margin: 0;"> <span id="LC300" class="line" lang="haskell"> <span class="p">;</span> <span class="kr" style="font-weight: 600;">let</span> <span class="n" style="color: #333;">herald</span> <span class="o" style="font-weight: 600;">|</span> <span class="n" style="color: #333;">definite_cycle</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">text</span> <span class="s" style="color: #d14;">"Superclass cycle for"</span></span>
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294
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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="n" style="color: #333;">otherwise</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">text</span> <span class="s" style="color: #d14;">"Potential superclass cycle for"</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">@@ -304,12 +311,12 @@ checkClassCycles cls</td>
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<pre style="margin: 0;"> <span id="LC311" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- NB: this code duplicates TcType.transSuperClasses, but</span></span>
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<pre style="margin: 0;"> <span id="LC312" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- with more error message generation clobber</span></span>
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<pre style="margin: 0;"> <span id="LC313" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- Make sure the two stay in sync.</span></span>
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<pre style="margin: 0;">-<span id="LC307" class="line" lang="haskell"> <span class="n" style="color: #333;">go</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;"><span class="idiff left right">Name</span>Set</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Class</span> <span class="o" style="font-weight: 600;">-></span> <span class="p">[</span><span class="kt" style="color: #458; font-weight: 600;">Type</span><span class="p">]</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Maybe</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Bool</span><span class="p">,</span> <span class="kt" style="color: #458; font-weight: 600;">SDoc</span><span class="p">)</span></span>
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<pre style="margin: 0;">+<span id="LC314" class="line" lang="haskell"> <span class="n" style="color: #333;">go</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;"><span class="idiff left right">Class</span>Set</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Class</span> <span class="o" style="font-weight: 600;">-></span> <span class="p">[</span><span class="kt" style="color: #458; font-weight: 600;">Type</span><span class="p">]</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Maybe</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Bool</span><span class="p">,</span> <span class="kt" style="color: #458; font-weight: 600;">SDoc</span><span class="p">)</span></span>
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<pre style="margin: 0;"> <span id="LC315" class="line" lang="haskell"> <span class="n" style="color: #333;">go</span> <span class="n" style="color: #333;">so_far</span> <span class="n" style="color: #333;">cls</span> <span class="n" style="color: #333;">tys</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">firstJusts</span> <span class="o" style="font-weight: 600;">$</span></span>
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309
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<pre style="margin: 0;"> <span id="LC316" class="line" lang="haskell"> <span class="n" style="color: #333;">map</span> <span class="p">(</span><span class="n" style="color: #333;">go_pred</span> <span class="n" style="color: #333;">so_far</span><span class="p">)</span> <span class="o" style="font-weight: 600;">$</span></span>
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<pre style="margin: 0;"> <span id="LC317" class="line" lang="haskell"> <span class="n" style="color: #333;">immSuperClasses</span> <span class="n" style="color: #333;">cls</span> <span class="n" style="color: #333;">tys</span></span>
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<pre style="margin: 0;"> <span id="LC318" 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;">go_pred</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;"><span class="idiff left right">Name</span>Set</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">PredType</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Maybe</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Bool</span><span class="p">,</span> <span class="kt" style="color: #458; font-weight: 600;">SDoc</span><span class="p">)</span></span>
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<pre style="margin: 0;">+<span id="LC319" class="line" lang="haskell"> <span class="n" style="color: #333;">go_pred</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;"><span class="idiff left right">Class</span>Set</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">PredType</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Maybe</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Bool</span><span class="p">,</span> <span class="kt" style="color: #458; font-weight: 600;">SDoc</span><span class="p">)</span></span>
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<pre style="margin: 0;"> <span id="LC320" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- Nothing <=> ok</span></span>
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321
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<pre style="margin: 0;"> <span id="LC321" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- Just (True, err) <=> definite cycle</span></span>
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322
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<pre style="margin: 0;"> <span id="LC322" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- Just (False, err) <=> possible cycle</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">@@ -322,7 +329,7 @@ checkClassCycles cls</td>
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<pre style="margin: 0;"> <span id="LC329" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">|</span> <span class="n" style="color: #333;">otherwise</span></span>
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<pre style="margin: 0;"> <span id="LC330" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">Nothing</span></span>
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331
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<pre style="margin: 0;"> <span id="LC331" class="line" lang="haskell"></span>
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<pre style="margin: 0;">-<span id="LC325" class="line" lang="haskell"> <span class="n" style="color: #333;">go_tc</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;"><span class="idiff left right">Name</span>Set</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">PredType</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TyCon</span> <span class="o" style="font-weight: 600;">-></span> <span class="p">[</span><span class="kt" style="color: #458; font-weight: 600;">Type</span><span class="p">]</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Maybe</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Bool</span><span class="p">,</span> <span class="kt" style="color: #458; font-weight: 600;">SDoc</span><span class="p">)</span></span>
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<pre style="margin: 0;">+<span id="LC332" class="line" lang="haskell"> <span class="n" style="color: #333;">go_tc</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;"><span class="idiff left right">Class</span>Set</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">PredType</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TyCon</span> <span class="o" style="font-weight: 600;">-></span> <span class="p">[</span><span class="kt" style="color: #458; font-weight: 600;">Type</span><span class="p">]</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Maybe</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Bool</span><span class="p">,</span> <span class="kt" style="color: #458; font-weight: 600;">SDoc</span><span class="p">)</span></span>
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<pre style="margin: 0;"> <span id="LC333" class="line" lang="haskell"> <span class="n" style="color: #333;">go_tc</span> <span class="n" style="color: #333;">so_far</span> <span class="n" style="color: #333;">pred</span> <span class="n" style="color: #333;">tc</span> <span class="n" style="color: #333;">tys</span></span>
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334
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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="n" style="color: #333;">isFamilyTyCon</span> <span class="n" style="color: #333;">tc</span></span>
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328
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335
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<pre style="margin: 0;"> <span id="LC335" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">Just</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">False</span><span class="p">,</span> <span class="n" style="color: #333;">hang</span> <span class="p">(</span><span class="n" style="color: #333;">text</span> <span class="s" style="color: #d14;">"one of whose superclass constraints is headed by a type family:"</span><span class="p">)</span></span>
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<td class="diff-line-num unfold js-unfold new_line" data-linenumber="339" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>
<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -332,18 +339,16 @@ checkClassCycles cls</td>
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<pre style="margin: 0;"> <span id="LC339" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">|</span> <span class="n" style="color: #333;">otherwise</span> <span class="c1" style="color: #998; font-style: italic;">-- Equality predicate, for example</span></span>
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<pre style="margin: 0;"> <span id="LC340" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">Nothing</span></span>
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341
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<pre style="margin: 0;"> <span id="LC341" class="line" lang="haskell"></span>
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<pre style="margin: 0;">-<span id="LC335" class="line" lang="haskell"> <span class="n" style="color: #333;">go_cls</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;"><span class="idiff left right">Name</span>Set</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Class</span> <span class="o" style="font-weight: 600;">-></span> <span class="p">[</span><span class="kt" style="color: #458; font-weight: 600;">Type</span><span class="p">]</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Maybe</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Bool</span><span class="p">,</span> <span class="kt" style="color: #458; font-weight: 600;">SDoc</span><span class="p">)</span></span>
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<pre style="margin: 0;">+<span id="LC342" class="line" lang="haskell"> <span class="n" style="color: #333;">go_cls</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;"><span class="idiff left right">Class</span>Set</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Class</span> <span class="o" style="font-weight: 600;">-></span> <span class="p">[</span><span class="kt" style="color: #458; font-weight: 600;">Type</span><span class="p">]</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Maybe</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Bool</span><span class="p">,</span> <span class="kt" style="color: #458; font-weight: 600;">SDoc</span><span class="p">)</span></span>
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<pre style="margin: 0;"> <span id="LC343" class="line" lang="haskell"> <span class="n" style="color: #333;">go_cls</span> <span class="n" style="color: #333;">so_far</span> <span class="n" style="color: #333;">cls</span> <span class="n" style="color: #333;">tys</span></span>
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<pre style="margin: 0;">-<span id="LC337" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">|</span> <span class="n" style="color: #333;">cls<span class="idiff left">_nm</span></span><span class="idiff"> </span><span class="p"><span class="idiff">`</span></span><span class="n" style="color: #333;"><span class="idiff right">elemName</span>Set</span><span class="p">`</span> <span class="n" style="color: #333;">so_far</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="n" style="color: #333;">cls</span><span class="idiff left"> </span><span class="p"><span class="idiff">`</span></span><span class="n" style="color: #333;"><span class="idiff right">elementOfUniq</span>Set</span><span class="p">`</span> <span class="n" style="color: #333;">so_far</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;">Just</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">True</span><span class="p">,</span> <span class="n" style="color: #333;">text</span> <span class="s" style="color: #d14;">"one of whose superclasses is"</span> <span class="o" style="font-weight: 600;"><+></span> <span class="n" style="color: #333;">quotes</span> <span class="p">(</span><span class="n" style="color: #333;">ppr</span> <span class="n" style="color: #333;">cls</span><span class="p">))</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="n" style="color: #333;">isCTupleClass</span> <span class="n" style="color: #333;">cls</span></span>
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<pre style="margin: 0;"> <span id="LC347" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">go</span> <span class="n" style="color: #333;">so_far</span> <span class="n" style="color: #333;">cls</span> <span class="n" style="color: #333;">tys</span></span>
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<pre style="margin: 0;"> <span id="LC348" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">|</span> <span class="n" style="color: #333;">otherwise</span></span>
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<pre style="margin: 0;">-<span id="LC342" 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;">b</span><span class="p">,</span><span class="n" style="color: #333;">err</span><span class="p">)</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">go</span> <span class="p">(</span><span class="n" style="color: #333;">so_far</span> <span class="p">`</span><span class="n" style="color: #333;"><span class="idiff left">extendNameSet</span></span><span class="p"><span class="idiff">`</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff right">cls_nm</span></span><span class="p">)</span> <span class="n" style="color: #333;">cls</span> <span class="n" style="color: #333;">tys</span></span>
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<pre style="margin: 0;">+<span id="LC349" 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;">b</span><span class="p">,</span><span class="n" style="color: #333;">err</span><span class="p">)</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">go</span> <span class="p">(</span><span class="n" style="color: #333;">so_far</span> <span class="p">`</span><span class="n" style="color: #333;"><span class="idiff left">addOneToUniqSet</span></span><span class="p"><span class="idiff">`</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff right">cls</span></span><span class="p">)</span> <span class="n" style="color: #333;">cls</span> <span class="n" style="color: #333;">tys</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;">return</span> <span class="p">(</span><span class="n" style="color: #333;">b</span><span class="p">,</span> <span class="n" style="color: #333;">text</span> <span class="s" style="color: #d14;">"one of whose superclasses is"</span> <span class="o" style="font-weight: 600;"><+></span> <span class="n" style="color: #333;">quotes</span> <span class="p">(</span><span class="n" style="color: #333;">ppr</span> <span class="n" style="color: #333;">cls</span><span class="p">)</span></span>
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<pre style="margin: 0;"> <span id="LC351" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">$$</span> <span class="n" style="color: #333;">err</span><span class="p">)</span> <span class="p">}</span></span>
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<pre style="margin: 0;">-<span id="LC345" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">where</span></span>
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<pre style="margin: 0;">-<span id="LC346" class="line" lang="haskell"> <span class="n" style="color: #333;">cls_nm</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">getName</span> <span class="n" style="color: #333;">cls</span></span>
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<pre style="margin: 0;"> <span id="LC352" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC353" 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="LC354" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">************************************************************************</span></span>
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<a href="https://gitlab.haskell.org/ghc/ghc/-/commit/ef950b19c04bc9c41920ecc9f94382653981d4bb#ee98f016857ad5548bb7cdc5dd85246585acdfd6"><strong>compiler/GHC/Types/Literal.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">@@ -646,6 +646,7 @@ absentLiteralOf :: TyCon -> Maybe Literal</td>
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<pre style="margin: 0;"> <span id="LC646" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- 2. This would need to return a type application to a literal</span></span>
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<pre style="margin: 0;"> <span id="LC647" class="line" lang="haskell"><span class="n" style="color: #333;">absentLiteralOf</span> <span class="n" style="color: #333;">tc</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">lookupUFM</span> <span class="n" style="color: #333;">absent_lits</span> <span class="n" style="color: #333;">tc</span></span>
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<pre style="margin: 0;"> <span id="LC648" class="line" lang="haskell"></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;">-- We do not use TyConEnv here to avoid import cycles.</span></span>
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<pre style="margin: 0;"> <span id="LC650" class="line" lang="haskell"><span class="n" style="color: #333;">absent_lits</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">UniqFM</span> <span class="kt" style="color: #458; font-weight: 600;">TyCon</span> <span class="kt" style="color: #458; font-weight: 600;">Literal</span></span>
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651
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<pre style="margin: 0;"> <span id="LC651" class="line" lang="haskell"><span class="n" style="color: #333;">absent_lits</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">listToUFM_Directly</span></span>
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651
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652
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<pre style="margin: 0;"> <span id="LC652" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- Explicitly construct the mape from the known</span></span>
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<a href="https://gitlab.haskell.org/ghc/ghc/-/commit/ef950b19c04bc9c41920ecc9f94382653981d4bb#804ef387cfc0e82b5b58b0764a766737229ac624"><strong>compiler/GHC/Types/RepType.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">@@ -30,6 +30,7 @@ import GHC.Core.DataCon</td>
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<pre style="margin: 0;"> <span id="LC30" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Builtin.Names</span></span>
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31
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<pre style="margin: 0;"> <span id="LC31" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Core.Coercion</span></span>
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<pre style="margin: 0;"> <span id="LC32" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Core.TyCon</span></span>
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<pre style="margin: 0;">+<span id="LC33" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Core.TyCon.RecWalk</span></span>
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<pre style="margin: 0;"> <span id="LC34" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Core.TyCo.Rep</span></span>
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<pre style="margin: 0;"> <span id="LC35" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Core.Type</span></span>
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<pre style="margin: 0;"> <span id="LC36" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Builtin.Types.Prim</span></span>
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<a href="https://gitlab.haskell.org/ghc/ghc/-/commit/ef950b19c04bc9c41920ecc9f94382653981d4bb#0f33fd88c617246c7f89c4477d2d1d24f942df23"><strong>compiler/ghc.cabal.in</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">@@ -531,6 +531,9 @@ Library</td>
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531
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<pre style="margin: 0;"> <span id="LC531" class="line" lang="plaintext"> GHC.Core.Multiplicity</span>
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532
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<pre style="margin: 0;"> <span id="LC532" class="line" lang="plaintext"> GHC.Core.UsageEnv</span>
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533
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<pre style="margin: 0;"> <span id="LC533" class="line" lang="plaintext"> GHC.Core.TyCon</span>
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534
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<pre style="margin: 0;">+<span id="LC534" class="line" lang="plaintext"> GHC.Core.TyCon.Env</span>
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<pre style="margin: 0;">+<span id="LC535" class="line" lang="plaintext"> GHC.Core.TyCon.Set</span>
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<pre style="margin: 0;">+<span id="LC536" class="line" lang="plaintext"> GHC.Core.TyCon.RecWalk</span>
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537
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<pre style="margin: 0;"> <span id="LC537" class="line" lang="plaintext"> GHC.Core.Coercion.Axiom</span>
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538
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<pre style="margin: 0;"> <span id="LC538" class="line" lang="plaintext"> GHC.Core.Type</span>
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539
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<pre style="margin: 0;"> <span id="LC539" class="line" lang="plaintext"> GHC.Core.TyCo.Rep</span>
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<a href="https://gitlab.haskell.org/ghc/ghc/-/commit/ef950b19c04bc9c41920ecc9f94382653981d4bb#bb16b4bf5aabf481dde073c41558250c783cb731"><strong>testsuite/tests/parser/should_run/CountParserDeps.hs</strong></a>
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<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -28,7 +28,7 @@ main = do</td>
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<pre style="margin: 0;"> <span id="LC28" class="line" lang="haskell"> <span class="p">[</span><span class="n" style="color: #333;">libdir</span><span class="p">]</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">getArgs</span></span>
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<pre style="margin: 0;"> <span id="LC29" class="line" lang="haskell"> <span class="n" style="color: #333;">modules</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">parserDeps</span> <span class="n" style="color: #333;">libdir</span></span>
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<pre style="margin: 0;"> <span id="LC30" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">let</span> <span class="n" style="color: #333;">num</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">sizeUniqSet</span> <span class="n" style="color: #333;">modules</span></span>
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<pre style="margin: 0;">-<span id="LC31" class="line" lang="haskell"> <span class="n" style="color: #333;">max_num</span> <span class="o" style="font-weight: 600;">=</span> <span class="mi" style="color: #099;">20<span class="idiff left right">3</span></span></span>
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<pre style="margin: 0;">+<span id="LC31" class="line" lang="haskell"> <span class="n" style="color: #333;">max_num</span> <span class="o" style="font-weight: 600;">=</span> <span class="mi" style="color: #099;">20<span class="idiff left right">5</span></span></span>
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<pre style="margin: 0;"> <span id="LC32" class="line" lang="haskell"> <span class="n" style="color: #333;">min_num</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">max_num</span> <span class="o" style="font-weight: 600;">-</span> <span class="mi" style="color: #099;">10</span> <span class="c1" style="color: #998; font-style: italic;">-- so that we don't forget to change the number</span></span>
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<pre style="margin: 0;"> <span id="LC33" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- when the number of dependencies decreases</span></span>
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<pre style="margin: 0;"> <span id="LC34" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- putStrLn $ "Found " ++ show num ++ " parser module dependencies"</span></span>
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