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<h3>
Andreas Klebinger pushed to branch wip/andreask/typedUniqFM
at <a href="https://gitlab.haskell.org/ghc/ghc">Glasgow Haskell Compiler / GHC</a>
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<h4>
Commits:
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<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/36db8a56a87acedd8c6d5e2460cc220f94d6bca4">36db8a56</a></strong>
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<span>by Andreas Klebinger</span>
<i>at 2020-06-23T22:52:41+02:00</i>
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<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">Expand map types haddocks
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<h4>2 changed files:</h4>
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<a href="#266bc13b57ed8c43a461b6d9a429c917879e16b4">
compiler/GHC/Types/Unique/DFM.hs
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<a href="#b0b25f424f682f899323d3f74070dbe8fd59628e">
compiler/GHC/Types/Unique/FM.hs
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<h4>Changes:</h4>
<li id="266bc13b57ed8c43a461b6d9a429c917879e16b4">
<a href="https://gitlab.haskell.org/ghc/ghc/-/commit/36db8a56a87acedd8c6d5e2460cc220f94d6bca4#266bc13b57ed8c43a461b6d9a429c917879e16b4"><strong>compiler/GHC/Types/Unique/DFM.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">@@ -129,6 +129,12 @@ instance Eq val => Eq (TaggedVal val) where</td>
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<pre style="margin: 0;"> <span id="LC129" class="line" lang="haskell"> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">TaggedVal</span> <span class="n" style="color: #333;">v1</span> <span class="kr" style="font-weight: 600;">_</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;">TaggedVal</span> <span class="n" style="color: #333;">v2</span> <span class="kr" style="font-weight: 600;">_</span><span class="p">)</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">v1</span> <span class="o" style="font-weight: 600;">==</span> <span class="n" style="color: #333;">v2</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="cd">-- | Type of unique deterministic finite maps</span></span>
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<pre style="margin: 0;">+<span id="LC132" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">--</span></span>
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<pre style="margin: 0;">+<span id="LC133" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- The key is just here to keep us honest. It's always safe</span></span>
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<pre style="margin: 0;">+<span id="LC134" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- to use a single type as key.</span></span>
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<pre style="margin: 0;">+<span id="LC135" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- If two types don't overlap in their uniques it's also safe</span></span>
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<pre style="margin: 0;">+<span id="LC136" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- to index the same map at multiple key types. But this is</span></span>
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<pre style="margin: 0;">+<span id="LC137" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- very much discouraged.</span></span>
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<pre style="margin: 0;"> <span id="LC138" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">data</span> <span class="kt" style="color: #458; font-weight: 600;">UniqDFM</span> <span class="n" style="color: #333;">key</span> <span class="n" style="color: #333;">ele</span> <span class="o" style="font-weight: 600;">=</span></span>
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<pre style="margin: 0;"> <span id="LC139" class="line" lang="haskell"> <span class="kt" style="color: #458; font-weight: 600;">UDFM</span></span>
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<pre style="margin: 0;"> <span id="LC140" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">!</span><span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">M</span><span class="o" style="font-weight: 600;">.</span><span class="kt" style="color: #458; font-weight: 600;">IntMap</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">TaggedVal</span> <span class="n" style="color: #333;">ele</span><span class="p">))</span> <span class="c1" style="color: #998; font-style: italic;">-- A map where keys are Unique's values and</span></span>
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<li id="b0b25f424f682f899323d3f74070dbe8fd59628e">
<a href="https://gitlab.haskell.org/ghc/ghc/-/commit/36db8a56a87acedd8c6d5e2460cc220f94d6bca4#b0b25f424f682f899323d3f74070dbe8fd59628e"><strong>compiler/GHC/Types/Unique/FM.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">@@ -85,7 +85,14 @@ import Data.Data</td>
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<pre style="margin: 0;"> <span id="LC85" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="k" style="font-weight: 600;">qualified</span> <span class="nn" style="color: #555;">Data.Semigroup</span> <span class="k" style="font-weight: 600;">as</span> <span class="n" style="color: #333;">Semi</span></span>
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<pre style="margin: 0;"> <span id="LC86" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">Data.Functor.Classes</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Eq1</span> <span class="p">(</span><span class="o" style="font-weight: 600;">..</span><span class="p">))</span></span>
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<pre style="margin: 0;"> <span id="LC87" class="line" lang="haskell"></span>
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<pre style="margin: 0;">-<span id="LC88" class="line" lang="haskell"></span>
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<pre style="margin: 0;">+<span id="LC88" class="line" lang="haskell"><span class="cd">-- | A finite map from @uniques@ of one type to</span></span>
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<pre style="margin: 0;">+<span id="LC89" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- elements in another type.</span></span>
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<pre style="margin: 0;">+<span id="LC90" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">--</span></span>
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91
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<pre style="margin: 0;">+<span id="LC91" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- The key is just here to keep us honest. It's always safe</span></span>
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92
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<pre style="margin: 0;">+<span id="LC92" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- to use a single type as key.</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;">-- If two types don't overlap in their uniques it's also safe</span></span>
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94
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<pre style="margin: 0;">+<span id="LC94" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- to index the same map at multiple key types. But this is</span></span>
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95
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<pre style="margin: 0;">+<span id="LC95" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- very much discouraged.</span></span>
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89
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<pre style="margin: 0;"> <span id="LC96" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">newtype</span> <span class="kt" style="color: #458; font-weight: 600;">UniqFM</span> <span class="n" style="color: #333;">key</span> <span class="n" style="color: #333;">ele</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">UFM</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">M</span><span class="o" style="font-weight: 600;">.</span><span class="kt" style="color: #458; font-weight: 600;">IntMap</span> <span class="n" style="color: #333;">ele</span><span class="p">)</span></span>
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90
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<pre style="margin: 0;"> <span id="LC97" 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;">Data</span><span class="p">,</span> <span class="kt" style="color: #458; font-weight: 600;">Eq</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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91
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98
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<pre style="margin: 0;"> <span id="LC98" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- Nondeterministic Foldable and Traversable instances are accessible through</span></span>
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