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<pre><a name="line-1"></a><span class='hs-comment'>{-# LANGUAGE FlexibleInstances #-}</span>
<a name="line-2"></a><span class='hs-comment'>{-# OPTIONS_GHC -fno-warn-orphans #-}</span>
<a name="line-3"></a><span class='hs-comment'>{-# OPTIONS_HADDOCK hide #-}</span>
<a name="line-4"></a><span class='hs-comment'>-----------------------------------------------------------------------------</span>
<a name="line-5"></a><span class='hs-comment'>-- |</span>
<a name="line-6"></a><span class='hs-comment'>-- Module : Haddock.GhcUtils</span>
<a name="line-7"></a><span class='hs-comment'>-- Copyright : (c) David Waern 2006-2009</span>
<a name="line-8"></a><span class='hs-comment'>-- License : BSD-like</span>
<a name="line-9"></a><span class='hs-comment'>--</span>
<a name="line-10"></a><span class='hs-comment'>-- Maintainer : haddock@projects.haskell.org</span>
<a name="line-11"></a><span class='hs-comment'>-- Stability : experimental</span>
<a name="line-12"></a><span class='hs-comment'>-- Portability : portable</span>
<a name="line-13"></a><span class='hs-comment'>--</span>
<a name="line-14"></a><span class='hs-comment'>-- Utils for dealing with types from the GHC API</span>
<a name="line-15"></a><span class='hs-comment'>-----------------------------------------------------------------------------</span>
<a name="line-16"></a>
<a name="line-17"></a><span class='hs-keyword'>module</span> <span class='hs-conid'>Haddock</span><span class='hs-varop'>.</span><span class='hs-conid'>GhcUtils</span> <span class='hs-keyword'>where</span>
<a name="line-18"></a>
<a name="line-19"></a>
<a name="line-20"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>Version</span>
<a name="line-21"></a><span class='hs-keyword'>import</span> <span class='hs-keyword'>qualified</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>Map</span> <span class='hs-keyword'>as</span> <span class='hs-conid'>Map</span>
<a name="line-22"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Control</span><span class='hs-varop'>.</span><span class='hs-conid'>Arrow</span>
<a name="line-23"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>Foldable</span> <span class='hs-varid'>hiding</span> <span class='hs-layout'>(</span><span class='hs-varid'>concatMap</span><span class='hs-layout'>)</span>
<a name="line-24"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>Traversable</span>
<a name="line-25"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Distribution</span><span class='hs-varop'>.</span><span class='hs-conid'>Compat</span><span class='hs-varop'>.</span><span class='hs-conid'>ReadP</span>
<a name="line-26"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Distribution</span><span class='hs-varop'>.</span><span class='hs-conid'>Text</span>
<a name="line-27"></a>
<a name="line-28"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Outputable</span>
<a name="line-29"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Name</span>
<a name="line-30"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Packages</span>
<a name="line-31"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Module</span>
<a name="line-32"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>RdrName</span> <span class='hs-layout'>(</span><span class='hs-conid'>GlobalRdrEnv</span><span class='hs-layout'>)</span>
<a name="line-33"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>HscTypes</span>
<a name="line-34"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>LazyUniqFM</span>
<a name="line-35"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>GHC</span>
<a name="line-36"></a>
<a name="line-37"></a>
<a name="line-38"></a><a name="moduleString"></a><span class='hs-definition'>moduleString</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Module</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>String</span>
<a name="line-39"></a><span class='hs-definition'>moduleString</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>moduleNameString</span> <span class='hs-varop'>.</span> <span class='hs-varid'>moduleName</span>
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<a name="line-41"></a>
<a name="line-42"></a><a name="modulePackageString"></a><span class='hs-comment'>-- return the name of the package, with version info</span>
<a name="line-43"></a><span class='hs-definition'>modulePackageString</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Module</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>String</span>
<a name="line-44"></a><span class='hs-definition'>modulePackageString</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>packageIdString</span> <span class='hs-varop'>.</span> <span class='hs-varid'>modulePackageId</span>
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<a name="line-46"></a>
<a name="line-47"></a><a name="modulePackageInfo"></a><span class='hs-comment'>-- return the (name,version) of the package</span>
<a name="line-48"></a><span class='hs-definition'>modulePackageInfo</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Module</span> <span class='hs-keyglyph'>-></span> <span class='hs-layout'>(</span><span class='hs-conid'>String</span><span class='hs-layout'>,</span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>Char</span><span class='hs-keyglyph'>]</span><span class='hs-layout'>)</span>
<a name="line-49"></a><span class='hs-definition'>modulePackageInfo</span> <span class='hs-varid'>modu</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>case</span> <span class='hs-varid'>unpackPackageId</span> <span class='hs-varid'>pkg</span> <span class='hs-keyword'>of</span>
<a name="line-50"></a> <span class='hs-conid'>Nothing</span> <span class='hs-keyglyph'>-></span> <span class='hs-layout'>(</span><span class='hs-varid'>packageIdString</span> <span class='hs-varid'>pkg</span><span class='hs-layout'>,</span> <span class='hs-str'>""</span><span class='hs-layout'>)</span>
<a name="line-51"></a> <span class='hs-conid'>Just</span> <span class='hs-varid'>x</span> <span class='hs-keyglyph'>-></span> <span class='hs-layout'>(</span><span class='hs-varid'>display</span> <span class='hs-varop'>$</span> <span class='hs-varid'>pkgName</span> <span class='hs-varid'>x</span><span class='hs-layout'>,</span> <span class='hs-varid'>showVersion</span> <span class='hs-layout'>(</span><span class='hs-varid'>pkgVersion</span> <span class='hs-varid'>x</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span>
<a name="line-52"></a> <span class='hs-keyword'>where</span> <span class='hs-varid'>pkg</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>modulePackageId</span> <span class='hs-varid'>modu</span>
<a name="line-53"></a>
<a name="line-54"></a>
<a name="line-55"></a><span class='hs-comment'>-- This was removed from GHC 6.11</span>
<a name="line-56"></a><span class='hs-comment'>-- XXX we shouldn't be using it, probably</span>
<a name="line-57"></a>
<a name="line-58"></a><a name="unpackPackageId"></a><span class='hs-comment'>-- | Try and interpret a GHC 'PackageId' as a cabal 'PackageIdentifer'. Returns @Nothing@ if</span>
<a name="line-59"></a><span class='hs-comment'>-- we could not parse it as such an object.</span>
<a name="line-60"></a><span class='hs-definition'>unpackPackageId</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>PackageId</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Maybe</span> <span class='hs-conid'>PackageIdentifier</span>
<a name="line-61"></a><span class='hs-definition'>unpackPackageId</span> <span class='hs-varid'>p</span>
<a name="line-62"></a> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>case</span> <span class='hs-keyglyph'>[</span> <span class='hs-varid'>pid</span> <span class='hs-keyglyph'>|</span> <span class='hs-layout'>(</span><span class='hs-varid'>pid</span><span class='hs-layout'>,</span><span class='hs-str'>""</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>readP_to_S</span> <span class='hs-varid'>parse</span> <span class='hs-varid'>str</span> <span class='hs-keyglyph'>]</span> <span class='hs-keyword'>of</span>
<a name="line-63"></a> <span class='hs-conid'>[]</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Nothing</span>
<a name="line-64"></a> <span class='hs-layout'>(</span><span class='hs-varid'>pid</span><span class='hs-conop'>:</span><span class='hs-keyword'>_</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Just</span> <span class='hs-varid'>pid</span>
<a name="line-65"></a> <span class='hs-keyword'>where</span> <span class='hs-varid'>str</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>packageIdString</span> <span class='hs-varid'>p</span>
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<a name="line-68"></a><a name="mkModuleNoPackage"></a><span class='hs-definition'>mkModuleNoPackage</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>String</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Module</span>
<a name="line-69"></a><span class='hs-definition'>mkModuleNoPackage</span> <span class='hs-varid'>str</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>mkModule</span> <span class='hs-layout'>(</span><span class='hs-varid'>stringToPackageId</span> <span class='hs-str'>""</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-varid'>mkModuleName</span> <span class='hs-varid'>str</span><span class='hs-layout'>)</span>
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<a name="line-71"></a>
<a name="line-72"></a><a name="lookupLoadedHomeModuleGRE"></a><span class='hs-definition'>lookupLoadedHomeModuleGRE</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>GhcMonad</span> <span class='hs-varid'>m</span> <span class='hs-keyglyph'>=></span> <span class='hs-conid'>ModuleName</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>m</span> <span class='hs-layout'>(</span><span class='hs-conid'>Maybe</span> <span class='hs-conid'>GlobalRdrEnv</span><span class='hs-layout'>)</span>
<a name="line-73"></a><span class='hs-definition'>lookupLoadedHomeModuleGRE</span> <span class='hs-varid'>mod_name</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>withSession</span> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>hsc_env</span> <span class='hs-keyglyph'>-></span>
<a name="line-74"></a> <span class='hs-keyword'>case</span> <span class='hs-varid'>lookupUFM</span> <span class='hs-layout'>(</span><span class='hs-varid'>hsc_HPT</span> <span class='hs-varid'>hsc_env</span><span class='hs-layout'>)</span> <span class='hs-varid'>mod_name</span> <span class='hs-keyword'>of</span>
<a name="line-75"></a> <span class='hs-conid'>Just</span> <span class='hs-varid'>mod_info</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>return</span> <span class='hs-layout'>(</span><span class='hs-varid'>mi_globals</span> <span class='hs-layout'>(</span><span class='hs-varid'>hm_iface</span> <span class='hs-varid'>mod_info</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span>
<a name="line-76"></a> <span class='hs-sel'>_not_a_home_module</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>return</span> <span class='hs-conid'>Nothing</span>
<a name="line-77"></a>
<a name="line-78"></a>
<a name="line-79"></a><span class='hs-keyword'>instance</span> <span class='hs-layout'>(</span><span class='hs-conid'>Outputable</span> <span class='hs-varid'>a</span><span class='hs-layout'>,</span> <span class='hs-conid'>Outputable</span> <span class='hs-varid'>b</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=></span> <span class='hs-conid'>Outputable</span> <span class='hs-layout'>(</span><span class='hs-conid'>Map</span><span class='hs-varop'>.</span><span class='hs-conid'>Map</span> <span class='hs-varid'>a</span> <span class='hs-varid'>b</span><span class='hs-layout'>)</span> <span class='hs-keyword'>where</span>
<a name="line-80"></a> <span class='hs-varid'>ppr</span> <span class='hs-varid'>m</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>ppr</span> <span class='hs-layout'>(</span><span class='hs-conid'>Map</span><span class='hs-varop'>.</span><span class='hs-varid'>toList</span> <span class='hs-varid'>m</span><span class='hs-layout'>)</span>
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<a name="line-82"></a>
<a name="line-83"></a><a name="isNameSym"></a><span class='hs-definition'>isNameSym</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Name</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Bool</span>
<a name="line-84"></a><span class='hs-definition'>isNameSym</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>isSymOcc</span> <span class='hs-varop'>.</span> <span class='hs-varid'>nameOccName</span>
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<a name="line-86"></a>
<a name="line-87"></a><a name="isVarSym"></a><span class='hs-definition'>isVarSym</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>OccName</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Bool</span>
<a name="line-88"></a><span class='hs-definition'>isVarSym</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>isLexVarSym</span> <span class='hs-varop'>.</span> <span class='hs-varid'>occNameFS</span>
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<a name="line-90"></a>
<a name="line-91"></a><a name="getMainDeclBinder"></a><span class='hs-definition'>getMainDeclBinder</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>HsDecl</span> <span class='hs-varid'>name</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Maybe</span> <span class='hs-varid'>name</span>
<a name="line-92"></a><span class='hs-definition'>getMainDeclBinder</span> <span class='hs-layout'>(</span><span class='hs-conid'>TyClD</span> <span class='hs-varid'>d</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Just</span> <span class='hs-layout'>(</span><span class='hs-varid'>tcdName</span> <span class='hs-varid'>d</span><span class='hs-layout'>)</span>
<a name="line-93"></a><span class='hs-definition'>getMainDeclBinder</span> <span class='hs-layout'>(</span><span class='hs-conid'>ValD</span> <span class='hs-varid'>d</span><span class='hs-layout'>)</span>
<a name="line-94"></a> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>case</span> <span class='hs-varid'>collectAcc</span> <span class='hs-varid'>d</span> <span class='hs-conid'>[]</span> <span class='hs-keyword'>of</span>
<a name="line-95"></a> <span class='hs-conid'>[]</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Nothing</span>
<a name="line-96"></a> <span class='hs-layout'>(</span><span class='hs-varid'>name</span><span class='hs-conop'>:</span><span class='hs-keyword'>_</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Just</span> <span class='hs-layout'>(</span><span class='hs-varid'>unLoc</span> <span class='hs-varid'>name</span><span class='hs-layout'>)</span>
<a name="line-97"></a><span class='hs-definition'>getMainDeclBinder</span> <span class='hs-layout'>(</span><span class='hs-conid'>SigD</span> <span class='hs-varid'>d</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>sigNameNoLoc</span> <span class='hs-varid'>d</span>
<a name="line-98"></a><span class='hs-definition'>getMainDeclBinder</span> <span class='hs-layout'>(</span><span class='hs-conid'>ForD</span> <span class='hs-layout'>(</span><span class='hs-conid'>ForeignImport</span> <span class='hs-varid'>name</span> <span class='hs-keyword'>_</span> <span class='hs-keyword'>_</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Just</span> <span class='hs-layout'>(</span><span class='hs-varid'>unLoc</span> <span class='hs-varid'>name</span><span class='hs-layout'>)</span>
<a name="line-99"></a><span class='hs-definition'>getMainDeclBinder</span> <span class='hs-layout'>(</span><span class='hs-conid'>ForD</span> <span class='hs-layout'>(</span><span class='hs-conid'>ForeignExport</span> <span class='hs-keyword'>_</span> <span class='hs-keyword'>_</span> <span class='hs-keyword'>_</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Nothing</span>
<a name="line-100"></a><span class='hs-definition'>getMainDeclBinder</span> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Nothing</span>
<a name="line-101"></a>
<a name="line-102"></a>
<a name="line-103"></a><a name="isTyClD"></a><span class='hs-definition'>isTyClD</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>HsDecl</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Bool</span>
<a name="line-104"></a><span class='hs-definition'>isTyClD</span> <span class='hs-layout'>(</span><span class='hs-conid'>TyClD</span> <span class='hs-keyword'>_</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>True</span>
<a name="line-105"></a><span class='hs-definition'>isTyClD</span> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>False</span>
<a name="line-106"></a>
<a name="line-107"></a>
<a name="line-108"></a><a name="isClassD"></a><span class='hs-definition'>isClassD</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>HsDecl</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Bool</span>
<a name="line-109"></a><span class='hs-definition'>isClassD</span> <span class='hs-layout'>(</span><span class='hs-conid'>TyClD</span> <span class='hs-varid'>d</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>isClassDecl</span> <span class='hs-varid'>d</span>
<a name="line-110"></a><span class='hs-definition'>isClassD</span> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>False</span>
<a name="line-111"></a>
<a name="line-112"></a>
<a name="line-113"></a><a name="isDocD"></a><span class='hs-definition'>isDocD</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>HsDecl</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Bool</span>
<a name="line-114"></a><span class='hs-definition'>isDocD</span> <span class='hs-layout'>(</span><span class='hs-conid'>DocD</span> <span class='hs-keyword'>_</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>True</span>
<a name="line-115"></a><span class='hs-definition'>isDocD</span> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>False</span>
<a name="line-116"></a>
<a name="line-117"></a>
<a name="line-118"></a><a name="isInstD"></a><span class='hs-definition'>isInstD</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>HsDecl</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Bool</span>
<a name="line-119"></a><span class='hs-definition'>isInstD</span> <span class='hs-layout'>(</span><span class='hs-conid'>InstD</span> <span class='hs-keyword'>_</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>True</span>
<a name="line-120"></a><span class='hs-definition'>isInstD</span> <span class='hs-layout'>(</span><span class='hs-conid'>TyClD</span> <span class='hs-varid'>d</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>isFamInstDecl</span> <span class='hs-varid'>d</span>
<a name="line-121"></a><span class='hs-definition'>isInstD</span> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>False</span>
<a name="line-122"></a>
<a name="line-123"></a>
<a name="line-124"></a><a name="declATs"></a><span class='hs-definition'>declATs</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>HsDecl</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyglyph'>[</span><span class='hs-varid'>a</span><span class='hs-keyglyph'>]</span>
<a name="line-125"></a><span class='hs-definition'>declATs</span> <span class='hs-layout'>(</span><span class='hs-conid'>TyClD</span> <span class='hs-varid'>d</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>isClassDecl</span> <span class='hs-varid'>d</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>map</span> <span class='hs-layout'>(</span><span class='hs-varid'>tcdName</span> <span class='hs-varop'>.</span> <span class='hs-varid'>unL</span><span class='hs-layout'>)</span> <span class='hs-varop'>$</span> <span class='hs-varid'>tcdATs</span> <span class='hs-varid'>d</span>
<a name="line-126"></a><span class='hs-definition'>declATs</span> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>[]</span>
<a name="line-127"></a>
<a name="line-128"></a>
<a name="line-129"></a><a name="pretty"></a><span class='hs-definition'>pretty</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Outputable</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>=></span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>String</span>
<a name="line-130"></a><span class='hs-definition'>pretty</span> <span class='hs-varid'>x</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>showSDoc</span> <span class='hs-layout'>(</span><span class='hs-varid'>ppr</span> <span class='hs-varid'>x</span><span class='hs-layout'>)</span>
<a name="line-131"></a>
<a name="line-132"></a>
<a name="line-133"></a><a name="trace_ppr"></a><span class='hs-definition'>trace_ppr</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Outputable</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>=></span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>b</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>b</span>
<a name="line-134"></a><span class='hs-definition'>trace_ppr</span> <span class='hs-varid'>x</span> <span class='hs-varid'>y</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>trace</span> <span class='hs-layout'>(</span><span class='hs-varid'>pretty</span> <span class='hs-varid'>x</span><span class='hs-layout'>)</span> <span class='hs-varid'>y</span>
<a name="line-135"></a>
<a name="line-136"></a>
<a name="line-137"></a><span class='hs-comment'>-------------------------------------------------------------------------------</span>
<a name="line-138"></a><span class='hs-comment'>-- Located</span>
<a name="line-139"></a><span class='hs-comment'>-------------------------------------------------------------------------------</span>
<a name="line-140"></a>
<a name="line-141"></a>
<a name="line-142"></a><a name="unL"></a><span class='hs-definition'>unL</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Located</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>a</span>
<a name="line-143"></a><span class='hs-definition'>unL</span> <span class='hs-layout'>(</span><span class='hs-conid'>L</span> <span class='hs-keyword'>_</span> <span class='hs-varid'>x</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>x</span>
<a name="line-144"></a>
<a name="line-145"></a>
<a name="line-146"></a><a name="reL"></a><span class='hs-definition'>reL</span> <span class='hs-keyglyph'>::</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Located</span> <span class='hs-varid'>a</span>
<a name="line-147"></a><span class='hs-definition'>reL</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>L</span> <span class='hs-varid'>undefined</span>
<a name="line-148"></a>
<a name="line-149"></a>
<a name="line-150"></a><span class='hs-keyword'>instance</span> <span class='hs-conid'>Foldable</span> <span class='hs-conid'>Located</span> <span class='hs-keyword'>where</span>
<a name="line-151"></a> <span class='hs-varid'>foldMap</span> <span class='hs-varid'>f</span> <span class='hs-layout'>(</span><span class='hs-conid'>L</span> <span class='hs-keyword'>_</span> <span class='hs-varid'>x</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>f</span> <span class='hs-varid'>x</span>
<a name="line-152"></a>
<a name="line-153"></a>
<a name="line-154"></a><span class='hs-keyword'>instance</span> <span class='hs-conid'>Traversable</span> <span class='hs-conid'>Located</span> <span class='hs-keyword'>where</span>
<a name="line-155"></a> <span class='hs-varid'>mapM</span> <span class='hs-varid'>f</span> <span class='hs-layout'>(</span><span class='hs-conid'>L</span> <span class='hs-varid'>l</span> <span class='hs-varid'>x</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-layout'>(</span><span class='hs-varid'>return</span> <span class='hs-varop'>.</span> <span class='hs-conid'>L</span> <span class='hs-varid'>l</span><span class='hs-layout'>)</span> <span class='hs-varop'>=<<</span> <span class='hs-varid'>f</span> <span class='hs-varid'>x</span>
<a name="line-156"></a>
<a name="line-157"></a>
<a name="line-158"></a><span class='hs-comment'>-------------------------------------------------------------------------------</span>
<a name="line-159"></a><span class='hs-comment'>-- NamedThing instances</span>
<a name="line-160"></a><span class='hs-comment'>-------------------------------------------------------------------------------</span>
<a name="line-161"></a>
<a name="line-162"></a>
<a name="line-163"></a><span class='hs-keyword'>instance</span> <span class='hs-conid'>NamedThing</span> <span class='hs-layout'>(</span><span class='hs-conid'>TyClDecl</span> <span class='hs-conid'>Name</span><span class='hs-layout'>)</span> <span class='hs-keyword'>where</span>
<a name="line-164"></a> <span class='hs-varid'>getName</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>tcdName</span>
<a name="line-165"></a>
<a name="line-166"></a>
<a name="line-167"></a><span class='hs-keyword'>instance</span> <span class='hs-conid'>NamedThing</span> <span class='hs-layout'>(</span><span class='hs-conid'>ConDecl</span> <span class='hs-conid'>Name</span><span class='hs-layout'>)</span> <span class='hs-keyword'>where</span>
<a name="line-168"></a> <span class='hs-varid'>getName</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>unL</span> <span class='hs-varop'>.</span> <span class='hs-varid'>con_name</span>
<a name="line-169"></a>
<a name="line-170"></a>
<a name="line-171"></a><span class='hs-comment'>-------------------------------------------------------------------------------</span>
<a name="line-172"></a><span class='hs-comment'>-- Subordinates</span>
<a name="line-173"></a><span class='hs-comment'>-------------------------------------------------------------------------------</span>
<a name="line-174"></a>
<a name="line-175"></a>
<a name="line-176"></a><a name="Parent"></a><span class='hs-keyword'>class</span> <span class='hs-conid'>Parent</span> <span class='hs-varid'>a</span> <span class='hs-keyword'>where</span>
<a name="line-177"></a> <span class='hs-varid'>children</span> <span class='hs-keyglyph'>::</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>Name</span><span class='hs-keyglyph'>]</span>
<a name="line-178"></a>
<a name="line-179"></a>
<a name="line-180"></a><span class='hs-keyword'>instance</span> <span class='hs-conid'>Parent</span> <span class='hs-layout'>(</span><span class='hs-conid'>ConDecl</span> <span class='hs-conid'>Name</span><span class='hs-layout'>)</span> <span class='hs-keyword'>where</span>
<a name="line-181"></a> <span class='hs-varid'>children</span> <span class='hs-varid'>con</span> <span class='hs-keyglyph'>=</span>
<a name="line-182"></a> <span class='hs-keyword'>case</span> <span class='hs-varid'>con_details</span> <span class='hs-varid'>con</span> <span class='hs-keyword'>of</span>
<a name="line-183"></a> <span class='hs-conid'>RecCon</span> <span class='hs-varid'>fields</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>map</span> <span class='hs-layout'>(</span><span class='hs-varid'>unL</span> <span class='hs-varop'>.</span> <span class='hs-varid'>cd_fld_name</span><span class='hs-layout'>)</span> <span class='hs-varid'>fields</span>
<a name="line-184"></a> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>[]</span>
<a name="line-185"></a>
<a name="line-186"></a>
<a name="line-187"></a><span class='hs-keyword'>instance</span> <span class='hs-conid'>Parent</span> <span class='hs-layout'>(</span><span class='hs-conid'>TyClDecl</span> <span class='hs-conid'>Name</span><span class='hs-layout'>)</span> <span class='hs-keyword'>where</span>
<a name="line-188"></a> <span class='hs-varid'>children</span> <span class='hs-varid'>d</span>
<a name="line-189"></a> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>isDataDecl</span> <span class='hs-varid'>d</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>map</span> <span class='hs-layout'>(</span><span class='hs-varid'>unL</span> <span class='hs-varop'>.</span> <span class='hs-varid'>con_name</span> <span class='hs-varop'>.</span> <span class='hs-varid'>unL</span><span class='hs-layout'>)</span> <span class='hs-varop'>.</span> <span class='hs-varid'>tcdCons</span> <span class='hs-varop'>$</span> <span class='hs-varid'>d</span>
<a name="line-190"></a> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>isClassDecl</span> <span class='hs-varid'>d</span> <span class='hs-keyglyph'>=</span>
<a name="line-191"></a> <span class='hs-varid'>map</span> <span class='hs-layout'>(</span><span class='hs-varid'>tcdName</span> <span class='hs-varop'>.</span> <span class='hs-varid'>unL</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-varid'>tcdATs</span> <span class='hs-varid'>d</span><span class='hs-layout'>)</span> <span class='hs-varop'>++</span>
<a name="line-192"></a> <span class='hs-keyglyph'>[</span> <span class='hs-varid'>unL</span> <span class='hs-varid'>n</span> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>L</span> <span class='hs-keyword'>_</span> <span class='hs-layout'>(</span><span class='hs-conid'>TypeSig</span> <span class='hs-varid'>n</span> <span class='hs-keyword'>_</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>tcdSigs</span> <span class='hs-varid'>d</span> <span class='hs-keyglyph'>]</span>
<a name="line-193"></a> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>otherwise</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>[]</span>
<a name="line-194"></a>
<a name="line-195"></a>
<a name="line-196"></a><a name="family"></a><span class='hs-comment'>-- | A parent and its children</span>
<a name="line-197"></a><span class='hs-definition'>family</span> <span class='hs-keyglyph'>::</span> <span class='hs-layout'>(</span><span class='hs-conid'>NamedThing</span> <span class='hs-varid'>a</span><span class='hs-layout'>,</span> <span class='hs-conid'>Parent</span> <span class='hs-varid'>a</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=></span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>-></span> <span class='hs-layout'>(</span><span class='hs-conid'>Name</span><span class='hs-layout'>,</span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>Name</span><span class='hs-keyglyph'>]</span><span class='hs-layout'>)</span>
<a name="line-198"></a><span class='hs-definition'>family</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>getName</span> <span class='hs-varop'>&&&</span> <span class='hs-varid'>children</span>
<a name="line-199"></a>
<a name="line-200"></a>
<a name="line-201"></a><a name="families"></a><span class='hs-comment'>-- | A mapping from the parent (main-binder) to its children and from each</span>
<a name="line-202"></a><span class='hs-comment'>-- child to its grand-children, recursively.</span>
<a name="line-203"></a><span class='hs-definition'>families</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>TyClDecl</span> <span class='hs-conid'>Name</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyglyph'>[</span><span class='hs-layout'>(</span><span class='hs-conid'>Name</span><span class='hs-layout'>,</span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>Name</span><span class='hs-keyglyph'>]</span><span class='hs-layout'>)</span><span class='hs-keyglyph'>]</span>
<a name="line-204"></a><span class='hs-definition'>families</span> <span class='hs-varid'>d</span>
<a name="line-205"></a> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>isDataDecl</span> <span class='hs-varid'>d</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>family</span> <span class='hs-varid'>d</span> <span class='hs-conop'>:</span> <span class='hs-varid'>map</span> <span class='hs-layout'>(</span><span class='hs-varid'>family</span> <span class='hs-varop'>.</span> <span class='hs-varid'>unL</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-varid'>tcdCons</span> <span class='hs-varid'>d</span><span class='hs-layout'>)</span>
<a name="line-206"></a> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>isClassDecl</span> <span class='hs-varid'>d</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>family</span> <span class='hs-varid'>d</span> <span class='hs-conop'>:</span> <span class='hs-varid'>concatMap</span> <span class='hs-layout'>(</span><span class='hs-varid'>families</span> <span class='hs-varop'>.</span> <span class='hs-varid'>unL</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-varid'>tcdATs</span> <span class='hs-varid'>d</span><span class='hs-layout'>)</span>
<a name="line-207"></a> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>otherwise</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>[]</span>
<a name="line-208"></a>
<a name="line-209"></a>
<a name="line-210"></a><a name="parentMap"></a><span class='hs-comment'>-- | A mapping from child to parent</span>
<a name="line-211"></a><span class='hs-definition'>parentMap</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>TyClDecl</span> <span class='hs-conid'>Name</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyglyph'>[</span><span class='hs-layout'>(</span><span class='hs-conid'>Name</span><span class='hs-layout'>,</span> <span class='hs-conid'>Name</span><span class='hs-layout'>)</span><span class='hs-keyglyph'>]</span>
<a name="line-212"></a><span class='hs-definition'>parentMap</span> <span class='hs-varid'>d</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyglyph'>[</span> <span class='hs-layout'>(</span><span class='hs-varid'>c</span><span class='hs-layout'>,</span> <span class='hs-varid'>p</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>|</span> <span class='hs-layout'>(</span><span class='hs-varid'>p</span><span class='hs-layout'>,</span> <span class='hs-varid'>cs</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>families</span> <span class='hs-varid'>d</span><span class='hs-layout'>,</span> <span class='hs-varid'>c</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>cs</span> <span class='hs-keyglyph'>]</span>
<a name="line-213"></a>
<a name="line-214"></a>
<a name="line-215"></a><a name="parents"></a><span class='hs-comment'>-- | The parents of a subordinate in a declaration</span>
<a name="line-216"></a><span class='hs-definition'>parents</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Name</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>HsDecl</span> <span class='hs-conid'>Name</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>Name</span><span class='hs-keyglyph'>]</span>
<a name="line-217"></a><span class='hs-definition'>parents</span> <span class='hs-varid'>n</span> <span class='hs-layout'>(</span><span class='hs-conid'>TyClD</span> <span class='hs-varid'>d</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyglyph'>[</span> <span class='hs-varid'>p</span> <span class='hs-keyglyph'>|</span> <span class='hs-layout'>(</span><span class='hs-varid'>c</span><span class='hs-layout'>,</span> <span class='hs-varid'>p</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>parentMap</span> <span class='hs-varid'>d</span><span class='hs-layout'>,</span> <span class='hs-varid'>c</span> <span class='hs-varop'>==</span> <span class='hs-varid'>n</span> <span class='hs-keyglyph'>]</span>
<a name="line-218"></a><span class='hs-definition'>parents</span> <span class='hs-keyword'>_</span> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>[]</span>
</pre></body>
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