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<title>src/full/Agda/Interaction/Imports.hs</title>
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<pre><a name="line-1"></a><span class='hs-comment'>{-# LANGUAGE CPP #-}</span>
<a name="line-2"></a><span class='hs-comment'>{-| This module deals with finding imported modules and loading their
<a name="line-3"></a> interface files.
<a name="line-4"></a>-}</span>
<a name="line-5"></a><span class='hs-keyword'>module</span> <span class='hs-conid'>Agda</span><span class='hs-varop'>.</span><span class='hs-conid'>Interaction</span><span class='hs-varop'>.</span><span class='hs-conid'>Imports</span> <span class='hs-keyword'>where</span>
<a name="line-6"></a>
<a name="line-7"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Prelude</span>
<a name="line-8"></a>
<a name="line-9"></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-10"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Control</span><span class='hs-varop'>.</span><span class='hs-conid'>Monad</span><span class='hs-varop'>.</span><span class='hs-conid'>Error</span>
<a name="line-11"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Control</span><span class='hs-varop'>.</span><span class='hs-conid'>Monad</span><span class='hs-varop'>.</span><span class='hs-conid'>Reader</span>
<a name="line-12"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Control</span><span class='hs-varop'>.</span><span class='hs-conid'>Monad</span><span class='hs-varop'>.</span><span class='hs-conid'>State</span>
<a name="line-13"></a><span class='hs-keyword'>import</span> <span class='hs-keyword'>qualified</span> <span class='hs-conid'>Control</span><span class='hs-varop'>.</span><span class='hs-conid'>Exception</span> <span class='hs-keyword'>as</span> <span class='hs-conid'>E</span>
<a name="line-14"></a>
<a name="line-15"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>Function</span> <span class='hs-layout'>(</span><span class='hs-varid'>on</span><span class='hs-layout'>)</span>
<a name="line-16"></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-17"></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'>List</span> <span class='hs-keyword'>as</span> <span class='hs-conid'>List</span>
<a name="line-18"></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'>Set</span> <span class='hs-keyword'>as</span> <span class='hs-conid'>Set</span>
<a name="line-19"></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'>Foldable</span> <span class='hs-keyword'>as</span> <span class='hs-conid'>Fold</span> <span class='hs-layout'>(</span><span class='hs-varid'>toList</span><span class='hs-layout'>)</span>
<a name="line-20"></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'>ByteString</span><span class='hs-varop'>.</span><span class='hs-conid'>Lazy</span> <span class='hs-keyword'>as</span> <span class='hs-conid'>BS</span>
<a name="line-21"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>List</span>
<a name="line-22"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>Maybe</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'>Monoid</span> <span class='hs-layout'>(</span><span class='hs-varid'>mempty</span><span class='hs-layout'>,</span> <span class='hs-varid'>mappend</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'>Map</span> <span class='hs-layout'>(</span><span class='hs-conid'>Map</span><span class='hs-layout'>)</span>
<a name="line-25"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>Set</span> <span class='hs-layout'>(</span><span class='hs-conid'>Set</span><span class='hs-layout'>)</span>
<a name="line-26"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>System</span><span class='hs-varop'>.</span><span class='hs-conid'>Directory</span> <span class='hs-layout'>(</span><span class='hs-varid'>doesFileExist</span><span class='hs-layout'>,</span> <span class='hs-varid'>getModificationTime</span><span class='hs-layout'>,</span> <span class='hs-varid'>removeFile</span><span class='hs-layout'>)</span>
<a name="line-27"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>System</span><span class='hs-varop'>.</span><span class='hs-conid'>FilePath</span> <span class='hs-varid'>hiding</span> <span class='hs-layout'>(</span><span class='hs-varid'>splitPath</span><span class='hs-layout'>)</span>
<a name="line-28"></a>
<a name="line-29"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Agda</span><span class='hs-varop'>.</span><span class='hs-conid'>Syntax</span><span class='hs-varop'>.</span><span class='hs-conid'>Position</span>
<a name="line-30"></a><span class='hs-keyword'>import</span> <span class='hs-keyword'>qualified</span> <span class='hs-conid'>Agda</span><span class='hs-varop'>.</span><span class='hs-conid'>Syntax</span><span class='hs-varop'>.</span><span class='hs-conid'>Abstract</span> <span class='hs-keyword'>as</span> <span class='hs-conid'>A</span>
<a name="line-31"></a><span class='hs-keyword'>import</span> <span class='hs-keyword'>qualified</span> <span class='hs-conid'>Agda</span><span class='hs-varop'>.</span><span class='hs-conid'>Syntax</span><span class='hs-varop'>.</span><span class='hs-conid'>Concrete</span> <span class='hs-keyword'>as</span> <span class='hs-conid'>C</span>
<a name="line-32"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Agda</span><span class='hs-varop'>.</span><span class='hs-conid'>Syntax</span><span class='hs-varop'>.</span><span class='hs-conid'>Abstract</span><span class='hs-varop'>.</span><span class='hs-conid'>Name</span>
<a name="line-33"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Agda</span><span class='hs-varop'>.</span><span class='hs-conid'>Syntax</span><span class='hs-varop'>.</span><span class='hs-conid'>Parser</span>
<a name="line-34"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Agda</span><span class='hs-varop'>.</span><span class='hs-conid'>Syntax</span><span class='hs-varop'>.</span><span class='hs-conid'>Scope</span><span class='hs-varop'>.</span><span class='hs-conid'>Base</span>
<a name="line-35"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Agda</span><span class='hs-varop'>.</span><span class='hs-conid'>Syntax</span><span class='hs-varop'>.</span><span class='hs-conid'>Scope</span><span class='hs-varop'>.</span><span class='hs-conid'>Monad</span>
<a name="line-36"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Agda</span><span class='hs-varop'>.</span><span class='hs-conid'>Syntax</span><span class='hs-varop'>.</span><span class='hs-conid'>Translation</span><span class='hs-varop'>.</span><span class='hs-conid'>ConcreteToAbstract</span>
<a name="line-37"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Agda</span><span class='hs-varop'>.</span><span class='hs-conid'>Syntax</span><span class='hs-varop'>.</span><span class='hs-conid'>Internal</span>
<a name="line-38"></a>
<a name="line-39"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Agda</span><span class='hs-varop'>.</span><span class='hs-conid'>Termination</span><span class='hs-varop'>.</span><span class='hs-conid'>TermCheck</span>
<a name="line-40"></a>
<a name="line-41"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Agda</span><span class='hs-varop'>.</span><span class='hs-conid'>TypeChecking</span><span class='hs-varop'>.</span><span class='hs-conid'>Errors</span>
<a name="line-42"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Agda</span><span class='hs-varop'>.</span><span class='hs-conid'>TypeChecking</span><span class='hs-varop'>.</span><span class='hs-conid'>Reduce</span>
<a name="line-43"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Agda</span><span class='hs-varop'>.</span><span class='hs-conid'>TypeChecking</span><span class='hs-varop'>.</span><span class='hs-conid'>Monad</span>
<a name="line-44"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Agda</span><span class='hs-varop'>.</span><span class='hs-conid'>TypeChecking</span><span class='hs-varop'>.</span><span class='hs-conid'>Monad</span><span class='hs-varop'>.</span><span class='hs-conid'>Builtin</span>
<a name="line-45"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Agda</span><span class='hs-varop'>.</span><span class='hs-conid'>TypeChecking</span><span class='hs-varop'>.</span><span class='hs-conid'>Serialise</span>
<a name="line-46"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Agda</span><span class='hs-varop'>.</span><span class='hs-conid'>TypeChecking</span><span class='hs-varop'>.</span><span class='hs-conid'>Primitive</span>
<a name="line-47"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Agda</span><span class='hs-varop'>.</span><span class='hs-conid'>TypeChecker</span>
<a name="line-48"></a>
<a name="line-49"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Agda</span><span class='hs-varop'>.</span><span class='hs-conid'>Interaction</span><span class='hs-varop'>.</span><span class='hs-conid'>EmacsCommand</span>
<a name="line-50"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Agda</span><span class='hs-varop'>.</span><span class='hs-conid'>Interaction</span><span class='hs-varop'>.</span><span class='hs-conid'>FindFile</span>
<a name="line-51"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Agda</span><span class='hs-varop'>.</span><span class='hs-conid'>Interaction</span><span class='hs-varop'>.</span><span class='hs-conid'>Options</span>
<a name="line-52"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Agda</span><span class='hs-varop'>.</span><span class='hs-conid'>Interaction</span><span class='hs-varop'>.</span><span class='hs-conid'>Response</span> <span class='hs-layout'>(</span><span class='hs-conid'>Response</span><span class='hs-layout'>(</span><span class='hs-conid'>Resp_RunningInfo</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span>
<a name="line-53"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Agda</span><span class='hs-varop'>.</span><span class='hs-conid'>Interaction</span><span class='hs-varop'>.</span><span class='hs-conid'>Highlighting</span><span class='hs-varop'>.</span><span class='hs-conid'>Precise</span> <span class='hs-layout'>(</span><span class='hs-conid'>HighlightingInfo</span><span class='hs-layout'>)</span>
<a name="line-54"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Agda</span><span class='hs-varop'>.</span><span class='hs-conid'>Interaction</span><span class='hs-varop'>.</span><span class='hs-conid'>Highlighting</span><span class='hs-varop'>.</span><span class='hs-conid'>Generate</span>
<a name="line-55"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Agda</span><span class='hs-varop'>.</span><span class='hs-conid'>Interaction</span><span class='hs-varop'>.</span><span class='hs-conid'>Highlighting</span><span class='hs-varop'>.</span><span class='hs-conid'>Vim</span>
<a name="line-56"></a><span class='hs-keyword'>import</span> <span class='hs-keyword'>qualified</span> <span class='hs-conid'>Agda</span><span class='hs-varop'>.</span><span class='hs-conid'>Interaction</span><span class='hs-varop'>.</span><span class='hs-conid'>Highlighting</span><span class='hs-varop'>.</span><span class='hs-conid'>Range</span> <span class='hs-keyword'>as</span> <span class='hs-conid'>R</span>
<a name="line-57"></a>
<a name="line-58"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Agda</span><span class='hs-varop'>.</span><span class='hs-conid'>Utils</span><span class='hs-varop'>.</span><span class='hs-conid'>FileName</span>
<a name="line-59"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Agda</span><span class='hs-varop'>.</span><span class='hs-conid'>Utils</span><span class='hs-varop'>.</span><span class='hs-conid'>Monad</span>
<a name="line-60"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Agda</span><span class='hs-varop'>.</span><span class='hs-conid'>Utils</span><span class='hs-varop'>.</span><span class='hs-conid'>IO</span><span class='hs-varop'>.</span><span class='hs-conid'>Binary</span>
<a name="line-61"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Agda</span><span class='hs-varop'>.</span><span class='hs-conid'>Utils</span><span class='hs-varop'>.</span><span class='hs-conid'>Pretty</span>
<a name="line-62"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Agda</span><span class='hs-varop'>.</span><span class='hs-conid'>Utils</span><span class='hs-varop'>.</span><span class='hs-conid'>Fresh</span>
<a name="line-63"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Agda</span><span class='hs-varop'>.</span><span class='hs-conid'>Utils</span><span class='hs-varop'>.</span><span class='hs-conid'>Time</span>
<a name="line-64"></a>
<a name="line-65"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Agda</span><span class='hs-varop'>.</span><span class='hs-conid'>Utils</span><span class='hs-varop'>.</span><span class='hs-conid'>Impossible</span>
<a name="line-66"></a><span class='hs-cpp'>#include "../undefined.h"</span>
<a name="line-67"></a>
<a name="line-68"></a><a name="mergeInterface"></a><span class='hs-comment'>-- | Merge an interface into the current proof state.</span>
<a name="line-69"></a><span class='hs-definition'>mergeInterface</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Interface</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>TCM</span> <span class='hs-conid'>()</span>
<a name="line-70"></a><span class='hs-definition'>mergeInterface</span> <span class='hs-varid'>i</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span>
<a name="line-71"></a> <span class='hs-keyword'>let</span> <span class='hs-varid'>sig</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>iSignature</span> <span class='hs-varid'>i</span>
<a name="line-72"></a> <span class='hs-varid'>builtin</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Map</span><span class='hs-varop'>.</span><span class='hs-varid'>toList</span> <span class='hs-varop'>$</span> <span class='hs-varid'>iBuiltin</span> <span class='hs-varid'>i</span>
<a name="line-73"></a> <span class='hs-varid'>prim</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyglyph'>[</span> <span class='hs-varid'>x</span> <span class='hs-keyglyph'>|</span> <span class='hs-layout'>(</span><span class='hs-keyword'>_</span><span class='hs-layout'>,</span><span class='hs-conid'>Prim</span> <span class='hs-varid'>x</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>builtin</span> <span class='hs-keyglyph'>]</span>
<a name="line-74"></a> <span class='hs-varid'>bi</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Map</span><span class='hs-varop'>.</span><span class='hs-varid'>fromList</span> <span class='hs-keyglyph'>[</span> <span class='hs-layout'>(</span><span class='hs-varid'>x</span><span class='hs-layout'>,</span><span class='hs-conid'>Builtin</span> <span class='hs-varid'>t</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>|</span> <span class='hs-layout'>(</span><span class='hs-varid'>x</span><span class='hs-layout'>,</span><span class='hs-conid'>Builtin</span> <span class='hs-varid'>t</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>builtin</span> <span class='hs-keyglyph'>]</span>
<a name="line-75"></a> <span class='hs-varid'>bs</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>gets</span> <span class='hs-varid'>stBuiltinThings</span>
<a name="line-76"></a> <span class='hs-varid'>reportSLn</span> <span class='hs-str'>"import.iface.merge"</span> <span class='hs-num'>10</span> <span class='hs-varop'>$</span> <span class='hs-str'>"Merging interface"</span>
<a name="line-77"></a> <span class='hs-varid'>reportSLn</span> <span class='hs-str'>"import.iface.merge"</span> <span class='hs-num'>20</span> <span class='hs-varop'>$</span>
<a name="line-78"></a> <span class='hs-str'>" Current builtins "</span> <span class='hs-varop'>++</span> <span class='hs-varid'>show</span> <span class='hs-layout'>(</span><span class='hs-conid'>Map</span><span class='hs-varop'>.</span><span class='hs-varid'>keys</span> <span class='hs-varid'>bs</span><span class='hs-layout'>)</span> <span class='hs-varop'>++</span> <span class='hs-str'>"\n"</span> <span class='hs-varop'>++</span>
<a name="line-79"></a> <span class='hs-str'>" New builtins "</span> <span class='hs-varop'>++</span> <span class='hs-varid'>show</span> <span class='hs-layout'>(</span><span class='hs-conid'>Map</span><span class='hs-varop'>.</span><span class='hs-varid'>keys</span> <span class='hs-varid'>bi</span><span class='hs-layout'>)</span>
<a name="line-80"></a> <span class='hs-keyword'>let</span> <span class='hs-varid'>check</span> <span class='hs-varid'>b</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>case</span> <span class='hs-layout'>(</span><span class='hs-varid'>b1</span><span class='hs-layout'>,</span> <span class='hs-varid'>b2</span><span class='hs-layout'>)</span> <span class='hs-keyword'>of</span>
<a name="line-81"></a> <span class='hs-layout'>(</span><span class='hs-conid'>Builtin</span> <span class='hs-varid'>x</span><span class='hs-layout'>,</span> <span class='hs-conid'>Builtin</span> <span class='hs-varid'>y</span><span class='hs-layout'>)</span>
<a name="line-82"></a> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>x</span> <span class='hs-varop'>==</span> <span class='hs-varid'>y</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>return</span> <span class='hs-conid'>()</span>
<a name="line-83"></a> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>otherwise</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>typeError</span> <span class='hs-varop'>$</span> <span class='hs-conid'>DuplicateBuiltinBinding</span> <span class='hs-varid'>b</span> <span class='hs-varid'>x</span> <span class='hs-varid'>y</span>
<a name="line-84"></a> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'>-></span> <span class='hs-sel'>__IMPOSSIBLE__</span>
<a name="line-85"></a> <span class='hs-keyword'>where</span>
<a name="line-86"></a> <span class='hs-conid'>Just</span> <span class='hs-varid'>b1</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Map</span><span class='hs-varop'>.</span><span class='hs-varid'>lookup</span> <span class='hs-varid'>b</span> <span class='hs-varid'>bs</span>
<a name="line-87"></a> <span class='hs-conid'>Just</span> <span class='hs-varid'>b2</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Map</span><span class='hs-varop'>.</span><span class='hs-varid'>lookup</span> <span class='hs-varid'>b</span> <span class='hs-varid'>bi</span>
<a name="line-88"></a> <span class='hs-varid'>mapM_</span> <span class='hs-varid'>check</span> <span class='hs-layout'>(</span><span class='hs-varid'>map</span> <span class='hs-varid'>fst</span> <span class='hs-varop'>$</span> <span class='hs-conid'>Map</span><span class='hs-varop'>.</span><span class='hs-varid'>toList</span> <span class='hs-varop'>$</span> <span class='hs-conid'>Map</span><span class='hs-varop'>.</span><span class='hs-varid'>intersection</span> <span class='hs-varid'>bs</span> <span class='hs-varid'>bi</span><span class='hs-layout'>)</span>
<a name="line-89"></a> <span class='hs-varid'>addImportedThings</span> <span class='hs-varid'>sig</span> <span class='hs-varid'>bi</span> <span class='hs-layout'>(</span><span class='hs-varid'>iHaskellImports</span> <span class='hs-varid'>i</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-varid'>iPatternSyns</span> <span class='hs-varid'>i</span><span class='hs-layout'>)</span>
<a name="line-90"></a> <span class='hs-varid'>reportSLn</span> <span class='hs-str'>"import.iface.merge"</span> <span class='hs-num'>20</span> <span class='hs-varop'>$</span>
<a name="line-91"></a> <span class='hs-str'>" Rebinding primitives "</span> <span class='hs-varop'>++</span> <span class='hs-varid'>show</span> <span class='hs-varid'>prim</span>
<a name="line-92"></a> <span class='hs-varid'>prim</span> <span class='hs-keyglyph'><-</span> <span class='hs-conid'>Map</span><span class='hs-varop'>.</span><span class='hs-varid'>fromList</span> <span class='hs-varop'><$></span> <span class='hs-varid'>mapM</span> <span class='hs-varid'>rebind</span> <span class='hs-varid'>prim</span>
<a name="line-93"></a> <span class='hs-varid'>modify</span> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>st</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>st</span> <span class='hs-layout'>{</span> <span class='hs-varid'>stImportedBuiltins</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>stImportedBuiltins</span> <span class='hs-varid'>st</span> <span class='hs-varop'>`</span><span class='hs-conid'>Map</span><span class='hs-varop'>.</span><span class='hs-varid'>union</span><span class='hs-varop'>`</span> <span class='hs-varid'>prim</span>
<a name="line-94"></a> <span class='hs-layout'>}</span>
<a name="line-95"></a> <span class='hs-keyword'>where</span>
<a name="line-96"></a> <span class='hs-varid'>rebind</span> <span class='hs-layout'>(</span><span class='hs-varid'>x</span><span class='hs-layout'>,</span> <span class='hs-varid'>q</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span>
<a name="line-97"></a> <span class='hs-conid'>PrimImpl</span> <span class='hs-keyword'>_</span> <span class='hs-varid'>pf</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>lookupPrimitiveFunction</span> <span class='hs-varid'>x</span>
<a name="line-98"></a> <span class='hs-varid'>return</span> <span class='hs-layout'>(</span><span class='hs-varid'>x</span><span class='hs-layout'>,</span> <span class='hs-conid'>Prim</span> <span class='hs-varop'>$</span> <span class='hs-varid'>pf</span> <span class='hs-layout'>{</span> <span class='hs-varid'>primFunName</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>q</span> <span class='hs-layout'>}</span><span class='hs-layout'>)</span>
<a name="line-99"></a>
<a name="line-100"></a><a name="addImportedThings"></a><span class='hs-definition'>addImportedThings</span> <span class='hs-keyglyph'>::</span>
<a name="line-101"></a> <span class='hs-conid'>Signature</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>BuiltinThings</span> <span class='hs-conid'>PrimFun</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Set</span> <span class='hs-conid'>String</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>A</span><span class='hs-varop'>.</span><span class='hs-conid'>PatternSynDefns</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>TCM</span> <span class='hs-conid'>()</span>
<a name="line-102"></a><span class='hs-definition'>addImportedThings</span> <span class='hs-varid'>isig</span> <span class='hs-varid'>ibuiltin</span> <span class='hs-varid'>hsImports</span> <span class='hs-varid'>patsyns</span> <span class='hs-keyglyph'>=</span>
<a name="line-103"></a> <span class='hs-varid'>modify</span> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>st</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>st</span>
<a name="line-104"></a> <span class='hs-layout'>{</span> <span class='hs-varid'>stImports</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>unionSignatures</span> <span class='hs-keyglyph'>[</span><span class='hs-varid'>stImports</span> <span class='hs-varid'>st</span><span class='hs-layout'>,</span> <span class='hs-varid'>isig</span><span class='hs-keyglyph'>]</span>
<a name="line-105"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>stImportedBuiltins</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Map</span><span class='hs-varop'>.</span><span class='hs-varid'>union</span> <span class='hs-layout'>(</span><span class='hs-varid'>stImportedBuiltins</span> <span class='hs-varid'>st</span><span class='hs-layout'>)</span> <span class='hs-varid'>ibuiltin</span>
<a name="line-106"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>stHaskellImports</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Set</span><span class='hs-varop'>.</span><span class='hs-varid'>union</span> <span class='hs-layout'>(</span><span class='hs-varid'>stHaskellImports</span> <span class='hs-varid'>st</span><span class='hs-layout'>)</span> <span class='hs-varid'>hsImports</span>
<a name="line-107"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>stPatternSynImports</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Map</span><span class='hs-varop'>.</span><span class='hs-varid'>union</span> <span class='hs-layout'>(</span><span class='hs-varid'>stPatternSynImports</span> <span class='hs-varid'>st</span><span class='hs-layout'>)</span> <span class='hs-varid'>patsyns</span>
<a name="line-108"></a> <span class='hs-layout'>}</span>
<a name="line-109"></a>
<a name="line-110"></a><span class='hs-comment'>-- | Scope checks the given module. A proper version of the module</span>
<a name="line-111"></a><span class='hs-comment'>-- name (with correct definition sites) is returned.</span>
<a name="line-112"></a>
<a name="line-113"></a><a name="scopeCheckImport"></a><span class='hs-definition'>scopeCheckImport</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>ModuleName</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>TCM</span> <span class='hs-layout'>(</span><span class='hs-conid'>ModuleName</span><span class='hs-layout'>,</span> <span class='hs-conid'>Map</span> <span class='hs-conid'>ModuleName</span> <span class='hs-conid'>Scope</span><span class='hs-layout'>)</span>
<a name="line-114"></a><span class='hs-definition'>scopeCheckImport</span> <span class='hs-varid'>x</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span>
<a name="line-115"></a> <span class='hs-varid'>reportSLn</span> <span class='hs-str'>"import.scope"</span> <span class='hs-num'>5</span> <span class='hs-varop'>$</span> <span class='hs-str'>"Scope checking "</span> <span class='hs-varop'>++</span> <span class='hs-varid'>show</span> <span class='hs-varid'>x</span>
<a name="line-116"></a> <span class='hs-varid'>verboseS</span> <span class='hs-str'>"import.scope"</span> <span class='hs-num'>10</span> <span class='hs-varop'>$</span> <span class='hs-keyword'>do</span>
<a name="line-117"></a> <span class='hs-varid'>visited</span> <span class='hs-keyglyph'><-</span> <span class='hs-conid'>Map</span><span class='hs-varop'>.</span><span class='hs-varid'>keys</span> <span class='hs-varop'><$></span> <span class='hs-varid'>getVisitedModules</span>
<a name="line-118"></a> <span class='hs-varid'>reportSLn</span> <span class='hs-str'>""</span> <span class='hs-num'>0</span> <span class='hs-varop'>$</span>
<a name="line-119"></a> <span class='hs-str'>" visited: "</span> <span class='hs-varop'>++</span> <span class='hs-varid'>intercalate</span> <span class='hs-str'>", "</span> <span class='hs-layout'>(</span><span class='hs-varid'>map</span> <span class='hs-layout'>(</span><span class='hs-varid'>render</span> <span class='hs-varop'>.</span> <span class='hs-varid'>pretty</span><span class='hs-layout'>)</span> <span class='hs-varid'>visited</span><span class='hs-layout'>)</span>
<a name="line-120"></a> <span class='hs-varid'>i</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>fst</span> <span class='hs-varop'><$></span> <span class='hs-varid'>getInterface</span> <span class='hs-varid'>x</span>
<a name="line-121"></a> <span class='hs-varid'>addImport</span> <span class='hs-varid'>x</span>
<a name="line-122"></a> <span class='hs-varid'>return</span> <span class='hs-layout'>(</span><span class='hs-varid'>iModuleName</span> <span class='hs-varid'>i</span> <span class='hs-varop'>`withRangesOfQ`</span> <span class='hs-varid'>mnameToConcrete</span> <span class='hs-varid'>x</span><span class='hs-layout'>,</span> <span class='hs-varid'>iScope</span> <span class='hs-varid'>i</span><span class='hs-layout'>)</span>
<a name="line-123"></a>
<a name="line-124"></a><span class='hs-comment'>-- | If the module has already been visited (without warnings), then</span>
<a name="line-125"></a><span class='hs-comment'>-- its interface is returned directly. Otherwise the computation is</span>
<a name="line-126"></a><span class='hs-comment'>-- used to find the interface and the computed interface is stored for</span>
<a name="line-127"></a><span class='hs-comment'>-- potential later use.</span>
<a name="line-128"></a>
<a name="line-129"></a><a name="alreadyVisited"></a><span class='hs-definition'>alreadyVisited</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>C</span><span class='hs-varop'>.</span><span class='hs-conid'>TopLevelModuleName</span> <span class='hs-keyglyph'>-></span>
<a name="line-130"></a> <span class='hs-conid'>TCM</span> <span class='hs-layout'>(</span><span class='hs-conid'>Interface</span><span class='hs-layout'>,</span> <span class='hs-conid'>Either</span> <span class='hs-conid'>Warnings</span> <span class='hs-conid'>ClockTime</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span>
<a name="line-131"></a> <span class='hs-conid'>TCM</span> <span class='hs-layout'>(</span><span class='hs-conid'>Interface</span><span class='hs-layout'>,</span> <span class='hs-conid'>Either</span> <span class='hs-conid'>Warnings</span> <span class='hs-conid'>ClockTime</span><span class='hs-layout'>)</span>
<a name="line-132"></a><span class='hs-definition'>alreadyVisited</span> <span class='hs-varid'>x</span> <span class='hs-varid'>getIface</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span>
<a name="line-133"></a> <span class='hs-varid'>mm</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>getVisitedModule</span> <span class='hs-varid'>x</span>
<a name="line-134"></a> <span class='hs-keyword'>case</span> <span class='hs-varid'>mm</span> <span class='hs-keyword'>of</span>
<a name="line-135"></a> <span class='hs-comment'>-- A module with warnings should never be allowed to be</span>
<a name="line-136"></a> <span class='hs-comment'>-- imported from another module.</span>
<a name="line-137"></a> <span class='hs-conid'>Just</span> <span class='hs-varid'>mi</span> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>not</span> <span class='hs-layout'>(</span><span class='hs-varid'>miWarnings</span> <span class='hs-varid'>mi</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyword'>do</span>
<a name="line-138"></a> <span class='hs-varid'>reportSLn</span> <span class='hs-str'>"import.visit"</span> <span class='hs-num'>10</span> <span class='hs-varop'>$</span> <span class='hs-str'>" Already visited "</span> <span class='hs-varop'>++</span> <span class='hs-varid'>render</span> <span class='hs-layout'>(</span><span class='hs-varid'>pretty</span> <span class='hs-varid'>x</span><span class='hs-layout'>)</span>
<a name="line-139"></a> <span class='hs-varid'>return</span> <span class='hs-layout'>(</span><span class='hs-varid'>miInterface</span> <span class='hs-varid'>mi</span><span class='hs-layout'>,</span> <span class='hs-conid'>Right</span> <span class='hs-varop'>$</span> <span class='hs-varid'>miTimeStamp</span> <span class='hs-varid'>mi</span><span class='hs-layout'>)</span>
<a name="line-140"></a> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyword'>do</span>
<a name="line-141"></a> <span class='hs-varid'>reportSLn</span> <span class='hs-str'>"import.visit"</span> <span class='hs-num'>5</span> <span class='hs-varop'>$</span> <span class='hs-str'>" Getting interface for "</span> <span class='hs-varop'>++</span> <span class='hs-varid'>render</span> <span class='hs-layout'>(</span><span class='hs-varid'>pretty</span> <span class='hs-varid'>x</span><span class='hs-layout'>)</span>
<a name="line-142"></a> <span class='hs-varid'>r</span><span class='hs-keyglyph'>@</span><span class='hs-layout'>(</span><span class='hs-varid'>i</span><span class='hs-layout'>,</span> <span class='hs-varid'>wt</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>getIface</span>
<a name="line-143"></a> <span class='hs-varid'>reportSLn</span> <span class='hs-str'>"import.visit"</span> <span class='hs-num'>5</span> <span class='hs-varop'>$</span> <span class='hs-str'>" Now we've looked at "</span> <span class='hs-varop'>++</span> <span class='hs-varid'>render</span> <span class='hs-layout'>(</span><span class='hs-varid'>pretty</span> <span class='hs-varid'>x</span><span class='hs-layout'>)</span>
<a name="line-144"></a> <span class='hs-keyword'>case</span> <span class='hs-varid'>wt</span> <span class='hs-keyword'>of</span>
<a name="line-145"></a> <span class='hs-conid'>Left</span> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyword'>do</span>
<a name="line-146"></a> <span class='hs-varid'>t</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>liftIO</span> <span class='hs-varid'>getClockTime</span>
<a name="line-147"></a> <span class='hs-varid'>visitModule</span> <span class='hs-varop'>$</span> <span class='hs-conid'>ModuleInfo</span>
<a name="line-148"></a> <span class='hs-layout'>{</span> <span class='hs-varid'>miInterface</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>i</span>
<a name="line-149"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>miWarnings</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>True</span>
<a name="line-150"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>miTimeStamp</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>t</span>
<a name="line-151"></a> <span class='hs-layout'>}</span>
<a name="line-152"></a> <span class='hs-conid'>Right</span> <span class='hs-varid'>t</span> <span class='hs-keyglyph'>-></span>
<a name="line-153"></a> <span class='hs-varid'>visitModule</span> <span class='hs-varop'>$</span> <span class='hs-conid'>ModuleInfo</span>
<a name="line-154"></a> <span class='hs-layout'>{</span> <span class='hs-varid'>miInterface</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>i</span>
<a name="line-155"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>miWarnings</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>False</span>
<a name="line-156"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>miTimeStamp</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>t</span>
<a name="line-157"></a> <span class='hs-layout'>}</span>
<a name="line-158"></a> <span class='hs-varid'>return</span> <span class='hs-varid'>r</span>
<a name="line-159"></a>
<a name="line-160"></a><span class='hs-comment'>-- | Type checks the given module (if necessary).</span>
<a name="line-161"></a>
<a name="line-162"></a><a name="typeCheck"></a><span class='hs-definition'>typeCheck</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>AbsolutePath</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>TCM</span> <span class='hs-layout'>(</span><span class='hs-conid'>Interface</span><span class='hs-layout'>,</span> <span class='hs-conid'>Maybe</span> <span class='hs-conid'>Warnings</span><span class='hs-layout'>)</span>
<a name="line-163"></a><span class='hs-definition'>typeCheck</span> <span class='hs-varid'>f</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span>
<a name="line-164"></a> <span class='hs-varid'>m</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>moduleName</span> <span class='hs-varid'>f</span>
<a name="line-165"></a>
<a name="line-166"></a> <span class='hs-layout'>(</span><span class='hs-varid'>i</span><span class='hs-layout'>,</span> <span class='hs-varid'>wt</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>getInterface'</span> <span class='hs-varid'>m</span> <span class='hs-conid'>True</span>
<a name="line-167"></a> <span class='hs-varid'>return</span> <span class='hs-layout'>(</span><span class='hs-varid'>i</span><span class='hs-layout'>,</span> <span class='hs-keyword'>case</span> <span class='hs-varid'>wt</span> <span class='hs-keyword'>of</span>
<a name="line-168"></a> <span class='hs-conid'>Left</span> <span class='hs-varid'>w</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Just</span> <span class='hs-varid'>w</span>
<a name="line-169"></a> <span class='hs-conid'>Right</span> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Nothing</span><span class='hs-layout'>)</span>
<a name="line-170"></a>
<a name="line-171"></a><span class='hs-comment'>-- | Tries to return the interface associated to the given module. The</span>
<a name="line-172"></a><span class='hs-comment'>-- time stamp of the relevant interface file is also returned. May</span>
<a name="line-173"></a><span class='hs-comment'>-- type check the module. An error is raised if a warning is</span>
<a name="line-174"></a><span class='hs-comment'>-- encountered.</span>
<a name="line-175"></a>
<a name="line-176"></a><a name="getInterface"></a><span class='hs-definition'>getInterface</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>ModuleName</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>TCM</span> <span class='hs-layout'>(</span><span class='hs-conid'>Interface</span><span class='hs-layout'>,</span> <span class='hs-conid'>ClockTime</span><span class='hs-layout'>)</span>
<a name="line-177"></a><span class='hs-definition'>getInterface</span> <span class='hs-varid'>x</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span>
<a name="line-178"></a> <span class='hs-layout'>(</span><span class='hs-varid'>i</span><span class='hs-layout'>,</span> <span class='hs-varid'>wt</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>getInterface'</span> <span class='hs-layout'>(</span><span class='hs-varid'>toTopLevelModuleName</span> <span class='hs-varid'>x</span><span class='hs-layout'>)</span> <span class='hs-conid'>False</span>
<a name="line-179"></a> <span class='hs-keyword'>case</span> <span class='hs-varid'>wt</span> <span class='hs-keyword'>of</span>
<a name="line-180"></a> <span class='hs-conid'>Left</span> <span class='hs-varid'>w</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>typeError</span> <span class='hs-varop'>$</span> <span class='hs-varid'>warningsToError</span> <span class='hs-varid'>w</span>
<a name="line-181"></a> <span class='hs-conid'>Right</span> <span class='hs-varid'>t</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>return</span> <span class='hs-layout'>(</span><span class='hs-varid'>i</span><span class='hs-layout'>,</span> <span class='hs-varid'>t</span><span class='hs-layout'>)</span>
<a name="line-182"></a>
<a name="line-183"></a><span class='hs-comment'>-- | A more precise variant of 'getInterface'. If warnings are</span>
<a name="line-184"></a><span class='hs-comment'>-- encountered then they are returned instead of being turned into</span>
<a name="line-185"></a><span class='hs-comment'>-- errors.</span>
<a name="line-186"></a>
<a name="line-187"></a><a name="getInterface'"></a><span class='hs-definition'>getInterface'</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>C</span><span class='hs-varop'>.</span><span class='hs-conid'>TopLevelModuleName</span>
<a name="line-188"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Bool</span> <span class='hs-comment'>-- ^ If type checking is necessary, should all</span>
<a name="line-189"></a> <span class='hs-comment'>-- state changes inflicted by 'createInterface'</span>
<a name="line-190"></a> <span class='hs-comment'>-- be preserved?</span>
<a name="line-191"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>TCM</span> <span class='hs-layout'>(</span><span class='hs-conid'>Interface</span><span class='hs-layout'>,</span> <span class='hs-conid'>Either</span> <span class='hs-conid'>Warnings</span> <span class='hs-conid'>ClockTime</span><span class='hs-layout'>)</span>
<a name="line-192"></a><span class='hs-definition'>getInterface'</span> <span class='hs-varid'>x</span> <span class='hs-varid'>includeStateChanges</span> <span class='hs-keyglyph'>=</span>
<a name="line-193"></a> <span class='hs-varid'>withIncreasedModuleNestingLevel</span> <span class='hs-varop'>$</span>
<a name="line-194"></a> <span class='hs-comment'>-- Preserve the pragma options unless includeStateChanges is True.</span>
<a name="line-195"></a> <span class='hs-varid'>bracket_</span> <span class='hs-layout'>(</span><span class='hs-varid'>stPragmaOptions</span> <span class='hs-varop'><$></span> <span class='hs-varid'>get</span><span class='hs-layout'>)</span>
<a name="line-196"></a> <span class='hs-layout'>(</span><span class='hs-varid'>unless</span> <span class='hs-varid'>includeStateChanges</span> <span class='hs-varop'>.</span> <span class='hs-varid'>setPragmaOptions</span><span class='hs-layout'>)</span> <span class='hs-varop'>$</span> <span class='hs-keyword'>do</span>
<a name="line-197"></a> <span class='hs-comment'>-- Forget the pragma options (locally).</span>
<a name="line-198"></a> <span class='hs-varid'>setCommandLineOptions</span> <span class='hs-varop'>.</span> <span class='hs-varid'>stPersistentOptions</span> <span class='hs-varop'>.</span> <span class='hs-varid'>stPersistent</span> <span class='hs-varop'>=<<</span> <span class='hs-varid'>get</span>
<a name="line-199"></a>
<a name="line-200"></a> <span class='hs-varid'>alreadyVisited</span> <span class='hs-varid'>x</span> <span class='hs-varop'>$</span> <span class='hs-varid'>addImportCycleCheck</span> <span class='hs-varid'>x</span> <span class='hs-varop'>$</span> <span class='hs-keyword'>do</span>
<a name="line-201"></a> <span class='hs-varid'>file</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>findFile</span> <span class='hs-varid'>x</span> <span class='hs-comment'>-- requires source to exist</span>
<a name="line-202"></a>
<a name="line-203"></a> <span class='hs-varid'>reportSLn</span> <span class='hs-str'>"import.iface"</span> <span class='hs-num'>10</span> <span class='hs-varop'>$</span> <span class='hs-str'>" Check for cycle"</span>
<a name="line-204"></a> <span class='hs-varid'>checkForImportCycle</span>
<a name="line-205"></a>
<a name="line-206"></a> <span class='hs-varid'>uptodate</span> <span class='hs-keyglyph'><-</span> <span class='hs-keyword'>do</span>
<a name="line-207"></a> <span class='hs-varid'>ignore</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>ignoreInterfaces</span>
<a name="line-208"></a> <span class='hs-varid'>cached</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>isCached</span> <span class='hs-varid'>file</span> <span class='hs-comment'>-- if it's cached ignoreInterfaces has no effect</span>
<a name="line-209"></a> <span class='hs-comment'>-- to avoid typechecking a file more than once</span>
<a name="line-210"></a> <span class='hs-varid'>newer</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>liftIO</span> <span class='hs-varop'>$</span> <span class='hs-varid'>filePath</span> <span class='hs-layout'>(</span><span class='hs-varid'>toIFile</span> <span class='hs-varid'>file</span><span class='hs-layout'>)</span> <span class='hs-varop'>`isNewerThan`</span> <span class='hs-varid'>filePath</span> <span class='hs-varid'>file</span>
<a name="line-211"></a> <span class='hs-varid'>return</span> <span class='hs-varop'>$</span> <span class='hs-varid'>newer</span> <span class='hs-varop'>&&</span> <span class='hs-layout'>(</span><span class='hs-varid'>not</span> <span class='hs-varid'>ignore</span> <span class='hs-varop'>||</span> <span class='hs-varid'>cached</span><span class='hs-layout'>)</span>
<a name="line-212"></a>
<a name="line-213"></a> <span class='hs-varid'>reportSLn</span> <span class='hs-str'>"import.iface"</span> <span class='hs-num'>5</span> <span class='hs-varop'>$</span>
<a name="line-214"></a> <span class='hs-str'>" "</span> <span class='hs-varop'>++</span> <span class='hs-varid'>render</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-varop'>++</span> <span class='hs-str'>" is "</span> <span class='hs-varop'>++</span>
<a name="line-215"></a> <span class='hs-layout'>(</span><span class='hs-keyword'>if</span> <span class='hs-varid'>uptodate</span> <span class='hs-keyword'>then</span> <span class='hs-str'>""</span> <span class='hs-keyword'>else</span> <span class='hs-str'>"not "</span><span class='hs-layout'>)</span> <span class='hs-varop'>++</span> <span class='hs-str'>"up-to-date."</span>
<a name="line-216"></a>
<a name="line-217"></a> <span class='hs-layout'>(</span><span class='hs-varid'>stateChangesIncluded</span><span class='hs-layout'>,</span> <span class='hs-layout'>(</span><span class='hs-varid'>i</span><span class='hs-layout'>,</span> <span class='hs-varid'>wt</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'><-</span>
<a name="line-218"></a> <span class='hs-keyword'>if</span> <span class='hs-varid'>uptodate</span> <span class='hs-keyword'>then</span> <span class='hs-varid'>skip</span> <span class='hs-varid'>file</span> <span class='hs-keyword'>else</span> <span class='hs-varid'>typeCheck</span> <span class='hs-varid'>file</span>
<a name="line-219"></a>
<a name="line-220"></a> <span class='hs-comment'>-- Ensure that the given module name matches the one in the file.</span>
<a name="line-221"></a> <span class='hs-keyword'>let</span> <span class='hs-varid'>topLevelName</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>toTopLevelModuleName</span> <span class='hs-varop'>$</span> <span class='hs-varid'>iModuleName</span> <span class='hs-varid'>i</span>
<a name="line-222"></a> <span class='hs-varid'>unless</span> <span class='hs-layout'>(</span><span class='hs-varid'>topLevelName</span> <span class='hs-varop'>==</span> <span class='hs-varid'>x</span><span class='hs-layout'>)</span> <span class='hs-varop'>$</span> <span class='hs-keyword'>do</span>
<a name="line-223"></a> <span class='hs-varid'>checkModuleName</span> <span class='hs-varid'>topLevelName</span> <span class='hs-varid'>file</span>
<a name="line-224"></a> <span class='hs-varid'>typeError</span> <span class='hs-varop'>$</span> <span class='hs-conid'>OverlappingProjects</span> <span class='hs-varid'>file</span> <span class='hs-varid'>topLevelName</span> <span class='hs-varid'>x</span>
<a name="line-225"></a>
<a name="line-226"></a> <span class='hs-varid'>visited</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>isVisited</span> <span class='hs-varid'>x</span>
<a name="line-227"></a> <span class='hs-varid'>reportSLn</span> <span class='hs-str'>"import.iface"</span> <span class='hs-num'>5</span> <span class='hs-varop'>$</span> <span class='hs-keyword'>if</span> <span class='hs-varid'>visited</span> <span class='hs-keyword'>then</span> <span class='hs-str'>" We've been here. Don't merge."</span>
<a name="line-228"></a> <span class='hs-keyword'>else</span> <span class='hs-str'>" New module. Let's check it out."</span>
<a name="line-229"></a> <span class='hs-varid'>unless</span> <span class='hs-layout'>(</span><span class='hs-varid'>visited</span> <span class='hs-varop'>||</span> <span class='hs-varid'>stateChangesIncluded</span><span class='hs-layout'>)</span> <span class='hs-varop'>$</span> <span class='hs-keyword'>do</span>
<a name="line-230"></a> <span class='hs-varid'>mergeInterface</span> <span class='hs-varid'>i</span>
<a name="line-231"></a> <span class='hs-varid'>ifTopLevelAndHighlightingLevelIs</span> <span class='hs-conid'>NonInteractive</span> <span class='hs-varop'>$</span>
<a name="line-232"></a> <span class='hs-varid'>highlightFromInterface</span> <span class='hs-varid'>i</span> <span class='hs-varid'>file</span>
<a name="line-233"></a>
<a name="line-234"></a> <span class='hs-varid'>modify</span> <span class='hs-layout'>(</span><span class='hs-keyglyph'>\</span><span class='hs-varid'>s</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>s</span> <span class='hs-layout'>{</span> <span class='hs-varid'>stCurrentModule</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Just</span> <span class='hs-varop'>$</span> <span class='hs-varid'>iModuleName</span> <span class='hs-varid'>i</span> <span class='hs-layout'>}</span><span class='hs-layout'>)</span>
<a name="line-235"></a>
<a name="line-236"></a> <span class='hs-comment'>-- Interfaces are only stored if no warnings were encountered.</span>
<a name="line-237"></a> <span class='hs-keyword'>case</span> <span class='hs-varid'>wt</span> <span class='hs-keyword'>of</span>
<a name="line-238"></a> <span class='hs-conid'>Left</span> <span class='hs-varid'>w</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>return</span> <span class='hs-conid'>()</span>
<a name="line-239"></a> <span class='hs-conid'>Right</span> <span class='hs-varid'>t</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>storeDecodedModule</span> <span class='hs-varid'>i</span> <span class='hs-varid'>t</span>
<a name="line-240"></a>
<a name="line-241"></a> <span class='hs-varid'>return</span> <span class='hs-layout'>(</span><span class='hs-varid'>i</span><span class='hs-layout'>,</span> <span class='hs-varid'>wt</span><span class='hs-layout'>)</span>
<a name="line-242"></a>
<a name="line-243"></a> <span class='hs-keyword'>where</span>
<a name="line-244"></a> <span class='hs-varid'>isCached</span> <span class='hs-varid'>file</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span>
<a name="line-245"></a> <span class='hs-keyword'>let</span> <span class='hs-varid'>ifile</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>filePath</span> <span class='hs-varop'>$</span> <span class='hs-varid'>toIFile</span> <span class='hs-varid'>file</span>
<a name="line-246"></a> <span class='hs-varid'>exist</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>liftIO</span> <span class='hs-varop'>$</span> <span class='hs-varid'>doesFileExistCaseSensitive</span> <span class='hs-varid'>ifile</span>
<a name="line-247"></a> <span class='hs-keyword'>if</span> <span class='hs-varid'>not</span> <span class='hs-varid'>exist</span>
<a name="line-248"></a> <span class='hs-keyword'>then</span> <span class='hs-varid'>return</span> <span class='hs-conid'>False</span>
<a name="line-249"></a> <span class='hs-keyword'>else</span> <span class='hs-keyword'>do</span>
<a name="line-250"></a> <span class='hs-varid'>t</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>liftIO</span> <span class='hs-varop'>$</span> <span class='hs-varid'>getModificationTime</span> <span class='hs-varid'>ifile</span>
<a name="line-251"></a> <span class='hs-varid'>mm</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>getDecodedModule</span> <span class='hs-varid'>x</span>
<a name="line-252"></a> <span class='hs-varid'>return</span> <span class='hs-varop'>$</span> <span class='hs-keyword'>case</span> <span class='hs-varid'>mm</span> <span class='hs-keyword'>of</span>
<a name="line-253"></a> <span class='hs-conid'>Just</span> <span class='hs-layout'>(</span><span class='hs-varid'>mi</span><span class='hs-layout'>,</span> <span class='hs-varid'>mt</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>mt</span> <span class='hs-varop'>>=</span> <span class='hs-varid'>t</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>True</span>
<a name="line-254"></a> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>False</span>
<a name="line-255"></a>
<a name="line-256"></a> <span class='hs-comment'>-- Formats the "Checking", "Finished" and "Skipping" messages.</span>
<a name="line-257"></a> <span class='hs-varid'>chaseMsg</span> <span class='hs-varid'>kind</span> <span class='hs-varid'>file</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span>
<a name="line-258"></a> <span class='hs-varid'>nesting</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>envModuleNestingLevel</span> <span class='hs-varop'><$></span> <span class='hs-varid'>ask</span>
<a name="line-259"></a> <span class='hs-keyword'>let</span> <span class='hs-varid'>s</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>genericReplicate</span> <span class='hs-varid'>nesting</span> <span class='hs-chr'>' '</span> <span class='hs-varop'>++</span> <span class='hs-varid'>kind</span> <span class='hs-varop'>++</span>
<a name="line-260"></a> <span class='hs-str'>" "</span> <span class='hs-varop'>++</span> <span class='hs-varid'>render</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-varop'>++</span>
<a name="line-261"></a> <span class='hs-keyword'>case</span> <span class='hs-varid'>file</span> <span class='hs-keyword'>of</span>
<a name="line-262"></a> <span class='hs-conid'>Nothing</span> <span class='hs-keyglyph'>-></span> <span class='hs-str'>"."</span>
<a name="line-263"></a> <span class='hs-conid'>Just</span> <span class='hs-varid'>f</span> <span class='hs-keyglyph'>-></span> <span class='hs-str'>" ("</span> <span class='hs-varop'>++</span> <span class='hs-varid'>f</span> <span class='hs-varop'>++</span> <span class='hs-str'>")."</span>
<a name="line-264"></a> <span class='hs-varid'>ifM</span> <span class='hs-layout'>(</span><span class='hs-varid'>envEmacs</span> <span class='hs-varop'><$></span> <span class='hs-varid'>ask</span><span class='hs-layout'>)</span>
<a name="line-265"></a> <span class='hs-layout'>(</span><span class='hs-varid'>get</span> <span class='hs-varop'>>>=</span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>st</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>stInteractionOutputCallback</span> <span class='hs-varid'>st</span> <span class='hs-varop'>$</span> <span class='hs-conid'>Resp_RunningInfo</span> <span class='hs-varid'>s</span><span class='hs-layout'>)</span>
<a name="line-266"></a> <span class='hs-layout'>(</span><span class='hs-varid'>reportSLn</span> <span class='hs-str'>""</span> <span class='hs-num'>1</span> <span class='hs-varid'>s</span><span class='hs-layout'>)</span>
<a name="line-267"></a>
<a name="line-268"></a> <span class='hs-varid'>skip</span> <span class='hs-varid'>file</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span>
<a name="line-269"></a> <span class='hs-comment'>-- Examine the mtime of the interface file. If it is newer than the</span>
<a name="line-270"></a> <span class='hs-comment'>-- stored version (in stDecodedModules), or if there is no stored version,</span>
<a name="line-271"></a> <span class='hs-comment'>-- read and decode it. Otherwise use the stored version.</span>
<a name="line-272"></a> <span class='hs-keyword'>let</span> <span class='hs-varid'>ifile</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>filePath</span> <span class='hs-varop'>$</span> <span class='hs-varid'>toIFile</span> <span class='hs-varid'>file</span>
<a name="line-273"></a> <span class='hs-varid'>t</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>liftIO</span> <span class='hs-varop'>$</span> <span class='hs-varid'>getModificationTime</span> <span class='hs-varid'>ifile</span>
<a name="line-274"></a> <span class='hs-varid'>mm</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>getDecodedModule</span> <span class='hs-varid'>x</span>
<a name="line-275"></a> <span class='hs-layout'>(</span><span class='hs-varid'>cached</span><span class='hs-layout'>,</span> <span class='hs-varid'>mi</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'><-</span> <span class='hs-keyword'>case</span> <span class='hs-varid'>mm</span> <span class='hs-keyword'>of</span>
<a name="line-276"></a> <span class='hs-conid'>Just</span> <span class='hs-layout'>(</span><span class='hs-varid'>mi</span><span class='hs-layout'>,</span> <span class='hs-varid'>mt</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span>
<a name="line-277"></a> <span class='hs-keyword'>if</span> <span class='hs-varid'>mt</span> <span class='hs-varop'><</span> <span class='hs-varid'>t</span>
<a name="line-278"></a> <span class='hs-keyword'>then</span> <span class='hs-keyword'>do</span> <span class='hs-varid'>dropDecodedModule</span> <span class='hs-varid'>x</span>
<a name="line-279"></a> <span class='hs-varid'>reportSLn</span> <span class='hs-str'>"import.iface"</span> <span class='hs-num'>5</span> <span class='hs-varop'>$</span> <span class='hs-str'>" file is newer, re-reading "</span> <span class='hs-varop'>++</span> <span class='hs-varid'>ifile</span>
<a name="line-280"></a> <span class='hs-conid'>(,)</span> <span class='hs-conid'>False</span> <span class='hs-varop'><$></span> <span class='hs-varid'>readInterface</span> <span class='hs-varid'>ifile</span>
<a name="line-281"></a> <span class='hs-keyword'>else</span> <span class='hs-keyword'>do</span> <span class='hs-varid'>reportSLn</span> <span class='hs-str'>"import.iface"</span> <span class='hs-num'>5</span> <span class='hs-varop'>$</span> <span class='hs-str'>" using stored version of "</span> <span class='hs-varop'>++</span> <span class='hs-varid'>ifile</span>
<a name="line-282"></a> <span class='hs-varid'>return</span> <span class='hs-layout'>(</span><span class='hs-conid'>True</span><span class='hs-layout'>,</span> <span class='hs-conid'>Just</span> <span class='hs-varid'>mi</span><span class='hs-layout'>)</span>
<a name="line-283"></a> <span class='hs-conid'>Nothing</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyword'>do</span>
<a name="line-284"></a> <span class='hs-varid'>reportSLn</span> <span class='hs-str'>"import.iface"</span> <span class='hs-num'>5</span> <span class='hs-varop'>$</span> <span class='hs-str'>" no stored version, reading "</span> <span class='hs-varop'>++</span> <span class='hs-varid'>ifile</span>
<a name="line-285"></a> <span class='hs-conid'>(,)</span> <span class='hs-conid'>False</span> <span class='hs-varop'><$></span> <span class='hs-varid'>readInterface</span> <span class='hs-varid'>ifile</span>
<a name="line-286"></a>
<a name="line-287"></a> <span class='hs-comment'>-- Check that it's the right version</span>
<a name="line-288"></a> <span class='hs-keyword'>case</span> <span class='hs-varid'>mi</span> <span class='hs-keyword'>of</span>
<a name="line-289"></a> <span class='hs-conid'>Nothing</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyword'>do</span>
<a name="line-290"></a> <span class='hs-varid'>reportSLn</span> <span class='hs-str'>"import.iface"</span> <span class='hs-num'>5</span> <span class='hs-varop'>$</span> <span class='hs-str'>" bad interface, re-type checking"</span>
<a name="line-291"></a> <span class='hs-varid'>typeCheck</span> <span class='hs-varid'>file</span>
<a name="line-292"></a> <span class='hs-conid'>Just</span> <span class='hs-varid'>i</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyword'>do</span>
<a name="line-293"></a>
<a name="line-294"></a> <span class='hs-varid'>reportSLn</span> <span class='hs-str'>"import.iface"</span> <span class='hs-num'>5</span> <span class='hs-varop'>$</span> <span class='hs-str'>" imports: "</span> <span class='hs-varop'>++</span> <span class='hs-varid'>show</span> <span class='hs-layout'>(</span><span class='hs-varid'>iImportedModules</span> <span class='hs-varid'>i</span><span class='hs-layout'>)</span>
<a name="line-295"></a>
<a name="line-296"></a> <span class='hs-varid'>ts</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>map</span> <span class='hs-varid'>snd</span> <span class='hs-varop'><$></span> <span class='hs-varid'>mapM</span> <span class='hs-varid'>getInterface</span> <span class='hs-layout'>(</span><span class='hs-varid'>iImportedModules</span> <span class='hs-varid'>i</span><span class='hs-layout'>)</span>
<a name="line-297"></a>
<a name="line-298"></a> <span class='hs-comment'>-- If any of the imports are newer we need to retype check</span>
<a name="line-299"></a> <span class='hs-keyword'>if</span> <span class='hs-varid'>any</span> <span class='hs-layout'>(</span><span class='hs-varop'>></span> <span class='hs-varid'>t</span><span class='hs-layout'>)</span> <span class='hs-varid'>ts</span>
<a name="line-300"></a> <span class='hs-keyword'>then</span> <span class='hs-keyword'>do</span>
<a name="line-301"></a> <span class='hs-comment'>-- liftIO close -- Close the interface file. See above.</span>
<a name="line-302"></a> <span class='hs-varid'>typeCheck</span> <span class='hs-varid'>file</span>
<a name="line-303"></a> <span class='hs-keyword'>else</span> <span class='hs-keyword'>do</span>
<a name="line-304"></a> <span class='hs-varid'>unless</span> <span class='hs-varid'>cached</span> <span class='hs-varop'>$</span> <span class='hs-varid'>chaseMsg</span> <span class='hs-str'>"Skipping"</span> <span class='hs-layout'>(</span><span class='hs-conid'>Just</span> <span class='hs-varid'>ifile</span><span class='hs-layout'>)</span>
<a name="line-305"></a> <span class='hs-comment'>-- We set the pragma options of the skipped file here,</span>
<a name="line-306"></a> <span class='hs-comment'>-- because if the top-level file is skipped we want the</span>
<a name="line-307"></a> <span class='hs-comment'>-- pragmas to apply to interactive commands in the UI.</span>
<a name="line-308"></a> <span class='hs-varid'>mapM_</span> <span class='hs-varid'>setOptionsFromPragma</span> <span class='hs-layout'>(</span><span class='hs-varid'>iPragmaOptions</span> <span class='hs-varid'>i</span><span class='hs-layout'>)</span>
<a name="line-309"></a> <span class='hs-varid'>return</span> <span class='hs-layout'>(</span><span class='hs-conid'>False</span><span class='hs-layout'>,</span> <span class='hs-layout'>(</span><span class='hs-varid'>i</span><span class='hs-layout'>,</span> <span class='hs-conid'>Right</span> <span class='hs-varid'>t</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span>
<a name="line-310"></a>
<a name="line-311"></a> <span class='hs-varid'>typeCheck</span> <span class='hs-varid'>file</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span>
<a name="line-312"></a> <span class='hs-keyword'>let</span> <span class='hs-varid'>withMsgs</span> <span class='hs-varid'>m</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span>
<a name="line-313"></a> <span class='hs-varid'>chaseMsg</span> <span class='hs-str'>"Checking"</span> <span class='hs-layout'>(</span><span class='hs-conid'>Just</span> <span class='hs-varop'>$</span> <span class='hs-varid'>filePath</span> <span class='hs-varid'>file</span><span class='hs-layout'>)</span>
<a name="line-314"></a> <span class='hs-varid'>x</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>m</span>
<a name="line-315"></a> <span class='hs-varid'>chaseMsg</span> <span class='hs-str'>"Finished"</span> <span class='hs-conid'>Nothing</span>
<a name="line-316"></a> <span class='hs-varid'>return</span> <span class='hs-varid'>x</span>
<a name="line-317"></a>
<a name="line-318"></a> <span class='hs-comment'>-- Do the type checking.</span>
<a name="line-319"></a>
<a name="line-320"></a> <span class='hs-keyword'>if</span> <span class='hs-varid'>includeStateChanges</span> <span class='hs-keyword'>then</span> <span class='hs-keyword'>do</span>
<a name="line-321"></a> <span class='hs-varid'>r</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>withMsgs</span> <span class='hs-varop'>$</span> <span class='hs-varid'>createInterface</span> <span class='hs-varid'>file</span> <span class='hs-varid'>x</span>
<a name="line-322"></a>
<a name="line-323"></a> <span class='hs-comment'>-- Merge the signature with the signature for imported</span>
<a name="line-324"></a> <span class='hs-comment'>-- things.</span>
<a name="line-325"></a> <span class='hs-varid'>sig</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>getSignature</span>
<a name="line-326"></a> <span class='hs-varid'>patsyns</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>getPatternSyns</span>
<a name="line-327"></a> <span class='hs-varid'>addImportedThings</span> <span class='hs-varid'>sig</span> <span class='hs-conid'>Map</span><span class='hs-varop'>.</span><span class='hs-varid'>empty</span> <span class='hs-conid'>Set</span><span class='hs-varop'>.</span><span class='hs-varid'>empty</span> <span class='hs-varid'>patsyns</span>
<a name="line-328"></a> <span class='hs-varid'>setSignature</span> <span class='hs-varid'>emptySignature</span>
<a name="line-329"></a> <span class='hs-varid'>setPatternSyns</span> <span class='hs-conid'>Map</span><span class='hs-varop'>.</span><span class='hs-varid'>empty</span>
<a name="line-330"></a>
<a name="line-331"></a> <span class='hs-varid'>return</span> <span class='hs-layout'>(</span><span class='hs-conid'>True</span><span class='hs-layout'>,</span> <span class='hs-varid'>r</span><span class='hs-layout'>)</span>
<a name="line-332"></a> <span class='hs-keyword'>else</span> <span class='hs-keyword'>do</span>
<a name="line-333"></a> <span class='hs-varid'>ms</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>getImportPath</span>
<a name="line-334"></a> <span class='hs-varid'>emacs</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>envEmacs</span> <span class='hs-varop'><$></span> <span class='hs-varid'>ask</span>
<a name="line-335"></a> <span class='hs-varid'>nesting</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>envModuleNestingLevel</span> <span class='hs-varop'><$></span> <span class='hs-varid'>ask</span>
<a name="line-336"></a> <span class='hs-varid'>mf</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>stModuleToSource</span> <span class='hs-varop'><$></span> <span class='hs-varid'>get</span>
<a name="line-337"></a> <span class='hs-varid'>vs</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>getVisitedModules</span>
<a name="line-338"></a> <span class='hs-varid'>ds</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>getDecodedModules</span>
<a name="line-339"></a> <span class='hs-varid'>opts</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>stPersistentOptions</span> <span class='hs-varop'>.</span> <span class='hs-varid'>stPersistent</span> <span class='hs-varop'><$></span> <span class='hs-varid'>get</span>
<a name="line-340"></a> <span class='hs-varid'>isig</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>getImportedSignature</span>
<a name="line-341"></a> <span class='hs-varid'>ibuiltin</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>gets</span> <span class='hs-varid'>stImportedBuiltins</span>
<a name="line-342"></a> <span class='hs-varid'>ipatsyns</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>getPatternSynImports</span>
<a name="line-343"></a> <span class='hs-varid'>ho</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>stInteractionOutputCallback</span> <span class='hs-varop'><$></span> <span class='hs-varid'>get</span>
<a name="line-344"></a> <span class='hs-comment'>-- Every interface is treated in isolation. Note: Changes</span>
<a name="line-345"></a> <span class='hs-comment'>-- to stDecodedModules are not preserved if an error is</span>
<a name="line-346"></a> <span class='hs-comment'>-- encountered in an imported module.</span>
<a name="line-347"></a> <span class='hs-varid'>r</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>liftIO</span> <span class='hs-varop'>$</span> <span class='hs-varid'>runTCM</span> <span class='hs-varop'>$</span>
<a name="line-348"></a> <span class='hs-varid'>withImportPath</span> <span class='hs-varid'>ms</span> <span class='hs-varop'>$</span>
<a name="line-349"></a> <span class='hs-varid'>local</span> <span class='hs-layout'>(</span><span class='hs-keyglyph'>\</span><span class='hs-varid'>e</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>e</span> <span class='hs-layout'>{</span> <span class='hs-varid'>envEmacs</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>emacs</span>
<a name="line-350"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>envModuleNestingLevel</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>nesting</span>
<a name="line-351"></a> <span class='hs-layout'>}</span><span class='hs-layout'>)</span> <span class='hs-varop'>$</span> <span class='hs-keyword'>do</span>
<a name="line-352"></a> <span class='hs-varid'>setDecodedModules</span> <span class='hs-varid'>ds</span>
<a name="line-353"></a> <span class='hs-varid'>setCommandLineOptions</span> <span class='hs-varid'>opts</span>
<a name="line-354"></a> <span class='hs-varid'>modify</span> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>s</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>s</span> <span class='hs-layout'>{</span> <span class='hs-varid'>stModuleToSource</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>mf</span>
<a name="line-355"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>stInteractionOutputCallback</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>ho</span>
<a name="line-356"></a> <span class='hs-layout'>}</span>
<a name="line-357"></a> <span class='hs-varid'>setVisitedModules</span> <span class='hs-varid'>vs</span>
<a name="line-358"></a> <span class='hs-varid'>addImportedThings</span> <span class='hs-varid'>isig</span> <span class='hs-varid'>ibuiltin</span> <span class='hs-conid'>Set</span><span class='hs-varop'>.</span><span class='hs-varid'>empty</span> <span class='hs-varid'>ipatsyns</span>
<a name="line-359"></a>
<a name="line-360"></a> <span class='hs-varid'>r</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>withMsgs</span> <span class='hs-varop'>$</span> <span class='hs-varid'>createInterface</span> <span class='hs-varid'>file</span> <span class='hs-varid'>x</span>
<a name="line-361"></a>
<a name="line-362"></a> <span class='hs-varid'>mf</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>stModuleToSource</span> <span class='hs-varop'><$></span> <span class='hs-varid'>get</span>
<a name="line-363"></a> <span class='hs-varid'>ds</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>getDecodedModules</span>
<a name="line-364"></a> <span class='hs-varid'>return</span> <span class='hs-layout'>(</span><span class='hs-varid'>r</span><span class='hs-layout'>,</span> <span class='hs-keyword'>do</span>
<a name="line-365"></a> <span class='hs-varid'>modify</span> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>s</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>s</span> <span class='hs-layout'>{</span> <span class='hs-varid'>stModuleToSource</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>mf</span> <span class='hs-layout'>}</span>
<a name="line-366"></a> <span class='hs-varid'>setDecodedModules</span> <span class='hs-varid'>ds</span>
<a name="line-367"></a> <span class='hs-keyword'>case</span> <span class='hs-varid'>r</span> <span class='hs-keyword'>of</span>
<a name="line-368"></a> <span class='hs-layout'>(</span><span class='hs-varid'>i</span><span class='hs-layout'>,</span> <span class='hs-conid'>Right</span> <span class='hs-varid'>t</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>storeDecodedModule</span> <span class='hs-varid'>i</span> <span class='hs-varid'>t</span>
<a name="line-369"></a> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>return</span> <span class='hs-conid'>()</span>
<a name="line-370"></a> <span class='hs-layout'>)</span>
<a name="line-371"></a>
<a name="line-372"></a> <span class='hs-keyword'>case</span> <span class='hs-varid'>r</span> <span class='hs-keyword'>of</span>
<a name="line-373"></a> <span class='hs-conid'>Left</span> <span class='hs-varid'>err</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>throwError</span> <span class='hs-varid'>err</span>
<a name="line-374"></a> <span class='hs-conid'>Right</span> <span class='hs-layout'>(</span><span class='hs-varid'>r</span><span class='hs-layout'>,</span> <span class='hs-varid'>update</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyword'>do</span>
<a name="line-375"></a> <span class='hs-varid'>update</span>
<a name="line-376"></a> <span class='hs-keyword'>case</span> <span class='hs-varid'>r</span> <span class='hs-keyword'>of</span>
<a name="line-377"></a> <span class='hs-layout'>(</span><span class='hs-keyword'>_</span><span class='hs-layout'>,</span> <span class='hs-conid'>Right</span> <span class='hs-keyword'>_</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span>
<a name="line-378"></a> <span class='hs-comment'>-- We skip the file which has just been type-checked to</span>
<a name="line-379"></a> <span class='hs-comment'>-- be able to forget some of the local state from</span>
<a name="line-380"></a> <span class='hs-comment'>-- checking the module.</span>
<a name="line-381"></a> <span class='hs-comment'>-- Note that this doesn't actually read the interface</span>
<a name="line-382"></a> <span class='hs-comment'>-- file, only the cached interface.</span>
<a name="line-383"></a> <span class='hs-varid'>skip</span> <span class='hs-varid'>file</span>
<a name="line-384"></a> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>return</span> <span class='hs-layout'>(</span><span class='hs-conid'>False</span><span class='hs-layout'>,</span> <span class='hs-varid'>r</span><span class='hs-layout'>)</span>
<a name="line-385"></a>
<a name="line-386"></a><span class='hs-comment'>-- | Print the highlighting information contained in the given</span>
<a name="line-387"></a><span class='hs-comment'>-- interface.</span>
<a name="line-388"></a>
<a name="line-389"></a><a name="highlightFromInterface"></a><span class='hs-definition'>highlightFromInterface</span>
<a name="line-390"></a> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Interface</span>
<a name="line-391"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>AbsolutePath</span>
<a name="line-392"></a> <span class='hs-comment'>-- ^ The corresponding file.</span>
<a name="line-393"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>TCM</span> <span class='hs-conid'>()</span>
<a name="line-394"></a><span class='hs-definition'>highlightFromInterface</span> <span class='hs-varid'>i</span> <span class='hs-varid'>file</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span>
<a name="line-395"></a> <span class='hs-varid'>reportSLn</span> <span class='hs-str'>"import.iface"</span> <span class='hs-num'>5</span> <span class='hs-varop'>$</span>
<a name="line-396"></a> <span class='hs-str'>"Generating syntax info for "</span> <span class='hs-varop'>++</span> <span class='hs-varid'>filePath</span> <span class='hs-varid'>file</span> <span class='hs-varop'>++</span>
<a name="line-397"></a> <span class='hs-str'>" (read from interface)."</span>
<a name="line-398"></a> <span class='hs-varid'>printHighlightingInfo</span> <span class='hs-layout'>(</span><span class='hs-varid'>iHighlighting</span> <span class='hs-varid'>i</span><span class='hs-layout'>)</span>
<a name="line-399"></a>
<a name="line-400"></a><a name="readInterface"></a><span class='hs-definition'>readInterface</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>FilePath</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>TCM</span> <span class='hs-layout'>(</span><span class='hs-conid'>Maybe</span> <span class='hs-conid'>Interface</span><span class='hs-layout'>)</span>
<a name="line-401"></a><span class='hs-definition'>readInterface</span> <span class='hs-varid'>file</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span>
<a name="line-402"></a> <span class='hs-comment'>-- Decode the interface file</span>
<a name="line-403"></a> <span class='hs-layout'>(</span><span class='hs-varid'>s</span><span class='hs-layout'>,</span> <span class='hs-varid'>close</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>liftIO</span> <span class='hs-varop'>$</span> <span class='hs-varid'>readBinaryFile'</span> <span class='hs-varid'>file</span>
<a name="line-404"></a> <span class='hs-keyword'>do</span> <span class='hs-varid'>i</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>liftIO</span> <span class='hs-varop'>.</span> <span class='hs-conid'>E</span><span class='hs-varop'>.</span><span class='hs-varid'>evaluate</span> <span class='hs-varop'>=<<</span> <span class='hs-varid'>decode</span> <span class='hs-varid'>s</span>
<a name="line-405"></a>
<a name="line-406"></a> <span class='hs-comment'>-- Close the file. Note</span>
<a name="line-407"></a> <span class='hs-comment'>-- ⑴ that evaluate ensures that i is evaluated to WHNF (before</span>
<a name="line-408"></a> <span class='hs-comment'>-- the next IO operation is executed), and</span>
<a name="line-409"></a> <span class='hs-comment'>-- ⑵ that decode returns Nothing if an error is encountered,</span>
<a name="line-410"></a> <span class='hs-comment'>-- so it is safe to close the file here.</span>
<a name="line-411"></a> <span class='hs-varid'>liftIO</span> <span class='hs-varid'>close</span>
<a name="line-412"></a>
<a name="line-413"></a> <span class='hs-varid'>return</span> <span class='hs-varid'>i</span>
<a name="line-414"></a> <span class='hs-comment'>-- Catch exceptions and close</span>
<a name="line-415"></a> <span class='hs-varop'>`catchError`</span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>e</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>liftIO</span> <span class='hs-varid'>close</span> <span class='hs-varop'>>></span> <span class='hs-varid'>handler</span> <span class='hs-varid'>e</span>
<a name="line-416"></a> <span class='hs-comment'>-- Catch exceptions</span>
<a name="line-417"></a> <span class='hs-varop'>`catchError`</span> <span class='hs-varid'>handler</span>
<a name="line-418"></a> <span class='hs-keyword'>where</span>
<a name="line-419"></a> <span class='hs-varid'>handler</span> <span class='hs-varid'>e</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>case</span> <span class='hs-varid'>e</span> <span class='hs-keyword'>of</span>
<a name="line-420"></a> <span class='hs-conid'>IOException</span> <span class='hs-keyword'>_</span> <span class='hs-varid'>e</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyword'>do</span>
<a name="line-421"></a> <span class='hs-varid'>reportSLn</span> <span class='hs-str'>""</span> <span class='hs-num'>0</span> <span class='hs-varop'>$</span> <span class='hs-str'>"IO exception: "</span> <span class='hs-varop'>++</span> <span class='hs-varid'>show</span> <span class='hs-varid'>e</span>
<a name="line-422"></a> <span class='hs-varid'>return</span> <span class='hs-conid'>Nothing</span> <span class='hs-comment'>-- Work-around for file locking bug.</span>
<a name="line-423"></a> <span class='hs-comment'>-- TODO: What does this refer to? Please</span>
<a name="line-424"></a> <span class='hs-comment'>-- document.</span>
<a name="line-425"></a> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>throwError</span> <span class='hs-varid'>e</span>
<a name="line-426"></a>
<a name="line-427"></a><span class='hs-comment'>-- | Writes the given interface to the given file. Returns the file's</span>
<a name="line-428"></a><span class='hs-comment'>-- new modification time stamp, or 'Nothing' if the write failed.</span>
<a name="line-429"></a>
<a name="line-430"></a><a name="writeInterface"></a><span class='hs-definition'>writeInterface</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>FilePath</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Interface</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>TCM</span> <span class='hs-conid'>ClockTime</span>
<a name="line-431"></a><span class='hs-definition'>writeInterface</span> <span class='hs-varid'>file</span> <span class='hs-varid'>i</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span>
<a name="line-432"></a> <span class='hs-varid'>reportSLn</span> <span class='hs-str'>"import.iface.write"</span> <span class='hs-num'>5</span> <span class='hs-varop'>$</span> <span class='hs-str'>"Writing interface file "</span> <span class='hs-varop'>++</span> <span class='hs-varid'>file</span> <span class='hs-varop'>++</span> <span class='hs-str'>"."</span>
<a name="line-433"></a> <span class='hs-varid'>encodeFile</span> <span class='hs-varid'>file</span> <span class='hs-varid'>i</span>
<a name="line-434"></a> <span class='hs-varid'>reportSLn</span> <span class='hs-str'>"import.iface.write"</span> <span class='hs-num'>5</span> <span class='hs-str'>"Wrote interface file."</span>
<a name="line-435"></a> <span class='hs-varid'>liftIO</span> <span class='hs-varop'>$</span> <span class='hs-varid'>getModificationTime</span> <span class='hs-varid'>file</span>
<a name="line-436"></a> <span class='hs-varop'>`catchError`</span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>e</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyword'>do</span>
<a name="line-437"></a> <span class='hs-varid'>reportSLn</span> <span class='hs-str'>""</span> <span class='hs-num'>1</span> <span class='hs-varop'>$</span>
<a name="line-438"></a> <span class='hs-str'>"Failed to write interface "</span> <span class='hs-varop'>++</span> <span class='hs-varid'>file</span> <span class='hs-varop'>++</span> <span class='hs-str'>"."</span>
<a name="line-439"></a> <span class='hs-varid'>liftIO</span> <span class='hs-varop'>$</span>
<a name="line-440"></a> <span class='hs-varid'>whenM</span> <span class='hs-layout'>(</span><span class='hs-varid'>doesFileExist</span> <span class='hs-varid'>file</span><span class='hs-layout'>)</span> <span class='hs-varop'>$</span> <span class='hs-varid'>removeFile</span> <span class='hs-varid'>file</span>
<a name="line-441"></a> <span class='hs-varid'>throwError</span> <span class='hs-varid'>e</span>
<a name="line-442"></a>
<a name="line-443"></a><span class='hs-comment'>-- | Tries to type check a module and write out its interface. The</span>
<a name="line-444"></a><span class='hs-comment'>-- function only writes out an interface file if it does not encounter</span>
<a name="line-445"></a><span class='hs-comment'>-- any warnings.</span>
<a name="line-446"></a><span class='hs-comment'>--</span>
<a name="line-447"></a><span class='hs-comment'>-- If appropriate this function writes out syntax highlighting</span>
<a name="line-448"></a><span class='hs-comment'>-- information.</span>
<a name="line-449"></a>
<a name="line-450"></a><a name="createInterface"></a><span class='hs-definition'>createInterface</span>
<a name="line-451"></a> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>AbsolutePath</span> <span class='hs-comment'>-- ^ The file to type check.</span>
<a name="line-452"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>C</span><span class='hs-varop'>.</span><span class='hs-conid'>TopLevelModuleName</span> <span class='hs-comment'>-- ^ The expected module name.</span>
<a name="line-453"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>TCM</span> <span class='hs-layout'>(</span><span class='hs-conid'>Interface</span><span class='hs-layout'>,</span> <span class='hs-conid'>Either</span> <span class='hs-conid'>Warnings</span> <span class='hs-conid'>ClockTime</span><span class='hs-layout'>)</span>
<a name="line-454"></a><span class='hs-definition'>createInterface</span> <span class='hs-varid'>file</span> <span class='hs-varid'>mname</span> <span class='hs-keyglyph'>=</span>
<a name="line-455"></a> <span class='hs-varid'>local</span> <span class='hs-layout'>(</span><span class='hs-keyglyph'>\</span><span class='hs-varid'>e</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>e</span> <span class='hs-layout'>{</span> <span class='hs-varid'>envCurrentPath</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>file</span> <span class='hs-layout'>}</span><span class='hs-layout'>)</span> <span class='hs-varop'>$</span> <span class='hs-keyword'>do</span>
<a name="line-456"></a> <span class='hs-varid'>modFile</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>stModuleToSource</span> <span class='hs-varop'><$></span> <span class='hs-varid'>get</span>
<a name="line-457"></a> <span class='hs-varid'>fileTokenInfo</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>generateTokenInfo</span> <span class='hs-varid'>file</span>
<a name="line-458"></a> <span class='hs-varid'>modify</span> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>st</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>st</span> <span class='hs-layout'>{</span> <span class='hs-varid'>stTokens</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>fileTokenInfo</span> <span class='hs-layout'>}</span>
<a name="line-459"></a>
<a name="line-460"></a> <span class='hs-varid'>reportSLn</span> <span class='hs-str'>"import.iface.create"</span> <span class='hs-num'>5</span> <span class='hs-varop'>$</span>
<a name="line-461"></a> <span class='hs-str'>"Creating interface for "</span> <span class='hs-varop'>++</span> <span class='hs-varid'>render</span> <span class='hs-layout'>(</span><span class='hs-varid'>pretty</span> <span class='hs-varid'>mname</span><span class='hs-layout'>)</span> <span class='hs-varop'>++</span> <span class='hs-str'>"."</span>
<a name="line-462"></a> <span class='hs-varid'>verboseS</span> <span class='hs-str'>"import.iface.create"</span> <span class='hs-num'>10</span> <span class='hs-varop'>$</span> <span class='hs-keyword'>do</span>
<a name="line-463"></a> <span class='hs-varid'>visited</span> <span class='hs-keyglyph'><-</span> <span class='hs-conid'>Map</span><span class='hs-varop'>.</span><span class='hs-varid'>keys</span> <span class='hs-varop'><$></span> <span class='hs-varid'>getVisitedModules</span>
<a name="line-464"></a> <span class='hs-varid'>reportSLn</span> <span class='hs-str'>""</span> <span class='hs-num'>0</span> <span class='hs-varop'>$</span>
<a name="line-465"></a> <span class='hs-str'>" visited: "</span> <span class='hs-varop'>++</span> <span class='hs-varid'>intercalate</span> <span class='hs-str'>", "</span> <span class='hs-layout'>(</span><span class='hs-varid'>map</span> <span class='hs-layout'>(</span><span class='hs-varid'>render</span> <span class='hs-varop'>.</span> <span class='hs-varid'>pretty</span><span class='hs-layout'>)</span> <span class='hs-varid'>visited</span><span class='hs-layout'>)</span>
<a name="line-466"></a>
<a name="line-467"></a> <span class='hs-varid'>previousHsImports</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>getHaskellImports</span>
<a name="line-468"></a>
<a name="line-469"></a> <span class='hs-layout'>(</span><span class='hs-varid'>pragmas</span><span class='hs-layout'>,</span> <span class='hs-varid'>top</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>liftIO</span> <span class='hs-varop'>$</span> <span class='hs-varid'>parseFile'</span> <span class='hs-varid'>moduleParser</span> <span class='hs-varid'>file</span>
<a name="line-470"></a>
<a name="line-471"></a> <span class='hs-varid'>pragmas</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>concat</span> <span class='hs-varop'><$></span> <span class='hs-varid'>concreteToAbstract_</span> <span class='hs-varid'>pragmas</span>
<a name="line-472"></a> <span class='hs-comment'>-- identity for top-level pragmas at the moment</span>
<a name="line-473"></a> <span class='hs-keyword'>let</span> <span class='hs-varid'>getOptions</span> <span class='hs-layout'>(</span><span class='hs-conid'>A</span><span class='hs-varop'>.</span><span class='hs-conid'>OptionsPragma</span> <span class='hs-varid'>opts</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Just</span> <span class='hs-varid'>opts</span>
<a name="line-474"></a> <span class='hs-varid'>getOptions</span> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Nothing</span>
<a name="line-475"></a> <span class='hs-varid'>options</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>catMaybes</span> <span class='hs-varop'>$</span> <span class='hs-varid'>map</span> <span class='hs-varid'>getOptions</span> <span class='hs-varid'>pragmas</span>
<a name="line-476"></a> <span class='hs-varid'>mapM_</span> <span class='hs-varid'>setOptionsFromPragma</span> <span class='hs-varid'>options</span>
<a name="line-477"></a> <span class='hs-varid'>topLevel</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>concreteToAbstract_</span> <span class='hs-layout'>(</span><span class='hs-conid'>TopLevel</span> <span class='hs-varid'>top</span><span class='hs-layout'>)</span>
<a name="line-478"></a>
<a name="line-479"></a> <span class='hs-keyword'>let</span> <span class='hs-varid'>ds</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>topLevelDecls</span> <span class='hs-varid'>topLevel</span>
<a name="line-480"></a>
<a name="line-481"></a> <span class='hs-varid'>ifTopLevelAndHighlightingLevelIs</span> <span class='hs-conid'>NonInteractive</span> <span class='hs-varop'>$</span> <span class='hs-keyword'>do</span>
<a name="line-482"></a> <span class='hs-comment'>-- Generate and print approximate syntax highlighting info.</span>
<a name="line-483"></a> <span class='hs-varid'>printHighlightingInfo</span> <span class='hs-varid'>fileTokenInfo</span>
<a name="line-484"></a> <span class='hs-varid'>mapM_</span> <span class='hs-layout'>(</span><span class='hs-keyglyph'>\</span><span class='hs-varid'>d</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>generateAndPrintSyntaxInfo</span> <span class='hs-varid'>d</span> <span class='hs-conid'>Partial</span><span class='hs-layout'>)</span> <span class='hs-varid'>ds</span>
<a name="line-485"></a>
<a name="line-486"></a> <span class='hs-varid'>catchError</span> <span class='hs-layout'>(</span><span class='hs-varid'>checkDecls</span> <span class='hs-varid'>ds</span><span class='hs-layout'>)</span> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>e</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyword'>do</span>
<a name="line-487"></a> <span class='hs-varid'>ifTopLevelAndHighlightingLevelIs</span> <span class='hs-conid'>NonInteractive</span> <span class='hs-varop'>$</span>
<a name="line-488"></a> <span class='hs-varid'>printErrorInfo</span> <span class='hs-varid'>e</span>
<a name="line-489"></a> <span class='hs-varid'>throwError</span> <span class='hs-varid'>e</span>
<a name="line-490"></a>
<a name="line-491"></a> <span class='hs-varid'>unfreezeMetas</span>
<a name="line-492"></a>
<a name="line-493"></a> <span class='hs-comment'>-- Count number of metas</span>
<a name="line-494"></a> <span class='hs-varid'>verboseS</span> <span class='hs-str'>"profile.metas"</span> <span class='hs-num'>10</span> <span class='hs-varop'>$</span> <span class='hs-keyword'>do</span>
<a name="line-495"></a> <span class='hs-conid'>MetaId</span> <span class='hs-varid'>n</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>fresh</span>
<a name="line-496"></a> <span class='hs-varid'>tickN</span> <span class='hs-str'>"metas"</span> <span class='hs-layout'>(</span><span class='hs-varid'>fromIntegral</span> <span class='hs-varid'>n</span><span class='hs-layout'>)</span>
<a name="line-497"></a>
<a name="line-498"></a> <span class='hs-comment'>-- Move any remaining token highlighting to stSyntaxInfo.</span>
<a name="line-499"></a> <span class='hs-varid'>ifTopLevelAndHighlightingLevelIs</span> <span class='hs-conid'>NonInteractive</span> <span class='hs-varop'>$</span>
<a name="line-500"></a> <span class='hs-varid'>printHighlightingInfo</span> <span class='hs-varop'>.</span> <span class='hs-varid'>stTokens</span> <span class='hs-varop'>=<<</span> <span class='hs-varid'>get</span>
<a name="line-501"></a> <span class='hs-varid'>modify</span> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>st</span> <span class='hs-keyglyph'>-></span>
<a name="line-502"></a> <span class='hs-varid'>st</span> <span class='hs-layout'>{</span> <span class='hs-varid'>stTokens</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>mempty</span>
<a name="line-503"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>stSyntaxInfo</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>stSyntaxInfo</span> <span class='hs-varid'>st</span> <span class='hs-varop'>`mappend`</span> <span class='hs-varid'>stTokens</span> <span class='hs-varid'>st</span>
<a name="line-504"></a> <span class='hs-layout'>}</span>
<a name="line-505"></a>
<a name="line-506"></a> <span class='hs-varid'>whenM</span> <span class='hs-layout'>(</span><span class='hs-varid'>optGenerateVimFile</span> <span class='hs-varop'><$></span> <span class='hs-varid'>commandLineOptions</span><span class='hs-layout'>)</span> <span class='hs-varop'>$</span>
<a name="line-507"></a> <span class='hs-comment'>-- Generate Vim file.</span>
<a name="line-508"></a> <span class='hs-varid'>withScope_</span> <span class='hs-layout'>(</span><span class='hs-varid'>insideScope</span> <span class='hs-varid'>topLevel</span><span class='hs-layout'>)</span> <span class='hs-varop'>$</span> <span class='hs-varid'>generateVimFile</span> <span class='hs-varop'>$</span> <span class='hs-varid'>filePath</span> <span class='hs-varid'>file</span>
<a name="line-509"></a>
<a name="line-510"></a> <span class='hs-varid'>setScope</span> <span class='hs-varop'>$</span> <span class='hs-varid'>outsideScope</span> <span class='hs-varid'>topLevel</span>
<a name="line-511"></a>
<a name="line-512"></a> <span class='hs-varid'>reportSLn</span> <span class='hs-str'>"scope.top"</span> <span class='hs-num'>50</span> <span class='hs-varop'>$</span> <span class='hs-str'>"SCOPE "</span> <span class='hs-varop'>++</span> <span class='hs-varid'>show</span> <span class='hs-layout'>(</span><span class='hs-varid'>insideScope</span> <span class='hs-varid'>topLevel</span><span class='hs-layout'>)</span>
<a name="line-513"></a>
<a name="line-514"></a> <span class='hs-varid'>syntaxInfo</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>stSyntaxInfo</span> <span class='hs-varop'><$></span> <span class='hs-varid'>get</span>
<a name="line-515"></a> <span class='hs-varid'>i</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>buildInterface</span> <span class='hs-varid'>topLevel</span> <span class='hs-varid'>syntaxInfo</span> <span class='hs-varid'>previousHsImports</span> <span class='hs-varid'>options</span>
<a name="line-516"></a>
<a name="line-517"></a> <span class='hs-comment'>-- TODO: It would be nice if unsolved things were highlighted</span>
<a name="line-518"></a> <span class='hs-comment'>-- after every mutual block.</span>
<a name="line-519"></a>
<a name="line-520"></a> <span class='hs-varid'>termErrs</span> <span class='hs-keyglyph'><-</span> <span class='hs-conid'>Fold</span><span class='hs-varop'>.</span><span class='hs-varid'>toList</span> <span class='hs-varop'><$></span> <span class='hs-varid'>stTermErrs</span> <span class='hs-varop'><$></span> <span class='hs-varid'>get</span>
<a name="line-521"></a> <span class='hs-varid'>unsolvedMetas</span> <span class='hs-keyglyph'><-</span> <span class='hs-conid'>List</span><span class='hs-varop'>.</span><span class='hs-varid'>nub</span> <span class='hs-varop'><$></span> <span class='hs-layout'>(</span><span class='hs-varid'>mapM</span> <span class='hs-varid'>getMetaRange</span> <span class='hs-varop'>=<<</span> <span class='hs-varid'>getOpenMetas</span><span class='hs-layout'>)</span>
<a name="line-522"></a> <span class='hs-varid'>unsolvedConstraints</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>getAllConstraints</span>
<a name="line-523"></a>
<a name="line-524"></a> <span class='hs-varid'>ifTopLevelAndHighlightingLevelIs</span> <span class='hs-conid'>NonInteractive</span> <span class='hs-varop'>$</span>
<a name="line-525"></a> <span class='hs-varid'>printUnsolvedInfo</span>
<a name="line-526"></a>
<a name="line-527"></a> <span class='hs-varid'>r</span> <span class='hs-keyglyph'><-</span> <span class='hs-keyword'>if</span> <span class='hs-varid'>and</span> <span class='hs-keyglyph'>[</span> <span class='hs-varid'>null</span> <span class='hs-varid'>termErrs</span><span class='hs-layout'>,</span> <span class='hs-varid'>null</span> <span class='hs-varid'>unsolvedMetas</span><span class='hs-layout'>,</span> <span class='hs-varid'>null</span> <span class='hs-varid'>unsolvedConstraints</span> <span class='hs-keyglyph'>]</span>
<a name="line-528"></a> <span class='hs-keyword'>then</span> <span class='hs-keyword'>do</span>
<a name="line-529"></a> <span class='hs-comment'>-- The file was successfully type-checked (and no warnings were</span>
<a name="line-530"></a> <span class='hs-comment'>-- encountered), so the interface should be written out.</span>
<a name="line-531"></a> <span class='hs-keyword'>let</span> <span class='hs-varid'>ifile</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>filePath</span> <span class='hs-varop'>$</span> <span class='hs-varid'>toIFile</span> <span class='hs-varid'>file</span>
<a name="line-532"></a> <span class='hs-varid'>t</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>writeInterface</span> <span class='hs-varid'>ifile</span> <span class='hs-varid'>i</span>
<a name="line-533"></a> <span class='hs-varid'>return</span> <span class='hs-layout'>(</span><span class='hs-varid'>i</span><span class='hs-layout'>,</span> <span class='hs-conid'>Right</span> <span class='hs-varid'>t</span><span class='hs-layout'>)</span>
<a name="line-534"></a> <span class='hs-keyword'>else</span>
<a name="line-535"></a> <span class='hs-varid'>return</span> <span class='hs-layout'>(</span><span class='hs-varid'>i</span><span class='hs-layout'>,</span> <span class='hs-conid'>Left</span> <span class='hs-varop'>$</span> <span class='hs-conid'>Warnings</span> <span class='hs-varid'>termErrs</span> <span class='hs-varid'>unsolvedMetas</span> <span class='hs-varid'>unsolvedConstraints</span><span class='hs-layout'>)</span>
<a name="line-536"></a>
<a name="line-537"></a> <span class='hs-comment'>-- Print stats</span>
<a name="line-538"></a> <span class='hs-varid'>stats</span> <span class='hs-keyglyph'><-</span> <span class='hs-conid'>Map</span><span class='hs-varop'>.</span><span class='hs-varid'>toList</span> <span class='hs-varop'><$></span> <span class='hs-varid'>getStatistics</span>
<a name="line-539"></a> <span class='hs-keyword'>case</span> <span class='hs-varid'>stats</span> <span class='hs-keyword'>of</span>
<a name="line-540"></a> <span class='hs-conid'>[]</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>return</span> <span class='hs-conid'>()</span>
<a name="line-541"></a> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>reportS</span> <span class='hs-str'>"profile"</span> <span class='hs-num'>1</span> <span class='hs-varop'>$</span> <span class='hs-varid'>unlines</span> <span class='hs-varop'>$</span>
<a name="line-542"></a> <span class='hs-keyglyph'>[</span> <span class='hs-str'>"Ticks for "</span> <span class='hs-varop'>++</span> <span class='hs-varid'>show</span> <span class='hs-layout'>(</span><span class='hs-varid'>pretty</span> <span class='hs-varid'>mname</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>]</span> <span class='hs-varop'>++</span>
<a name="line-543"></a> <span class='hs-keyglyph'>[</span> <span class='hs-str'>" "</span> <span class='hs-varop'>++</span> <span class='hs-varid'>s</span> <span class='hs-varop'>++</span> <span class='hs-str'>" = "</span> <span class='hs-varop'>++</span> <span class='hs-varid'>show</span> <span class='hs-varid'>n</span>
<a name="line-544"></a> <span class='hs-keyglyph'>|</span> <span class='hs-layout'>(</span><span class='hs-varid'>s</span><span class='hs-layout'>,</span> <span class='hs-varid'>n</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>sortBy</span> <span class='hs-layout'>(</span><span class='hs-varid'>compare</span> <span class='hs-varop'>`on`</span> <span class='hs-varid'>snd</span><span class='hs-layout'>)</span> <span class='hs-varid'>stats</span> <span class='hs-keyglyph'>]</span>
<a name="line-545"></a>
<a name="line-546"></a> <span class='hs-varid'>return</span> <span class='hs-varid'>r</span>
<a name="line-547"></a>
<a name="line-548"></a><span class='hs-comment'>-- | Builds an interface for the current module, which should already</span>
<a name="line-549"></a><span class='hs-comment'>-- have been successfully type checked.</span>
<a name="line-550"></a>
<a name="line-551"></a><a name="buildInterface"></a><span class='hs-definition'>buildInterface</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>TopLevelInfo</span>
<a name="line-552"></a> <span class='hs-comment'>-- ^ 'TopLevelInfo' for the current module.</span>
<a name="line-553"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>HighlightingInfo</span>
<a name="line-554"></a> <span class='hs-comment'>-- ^ Syntax highlighting info for the module.</span>
<a name="line-555"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Set</span> <span class='hs-conid'>String</span>
<a name="line-556"></a> <span class='hs-comment'>-- ^ Haskell modules imported in imported modules</span>
<a name="line-557"></a> <span class='hs-comment'>-- (transitively).</span>
<a name="line-558"></a> <span class='hs-keyglyph'>-></span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>OptionsPragma</span><span class='hs-keyglyph'>]</span>
<a name="line-559"></a> <span class='hs-comment'>-- ^ Options set in @OPTIONS@ pragmas.</span>
<a name="line-560"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>TCM</span> <span class='hs-conid'>Interface</span>
<a name="line-561"></a><span class='hs-definition'>buildInterface</span> <span class='hs-varid'>topLevel</span> <span class='hs-varid'>syntaxInfo</span> <span class='hs-varid'>previousHsImports</span> <span class='hs-varid'>pragmas</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span>
<a name="line-562"></a> <span class='hs-varid'>reportSLn</span> <span class='hs-str'>"import.iface"</span> <span class='hs-num'>5</span> <span class='hs-str'>"Building interface..."</span>
<a name="line-563"></a> <span class='hs-varid'>scope'</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>getScope</span>
<a name="line-564"></a> <span class='hs-keyword'>let</span> <span class='hs-varid'>scope</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>scope'</span> <span class='hs-layout'>{</span> <span class='hs-varid'>scopeCurrent</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>m</span> <span class='hs-layout'>}</span>
<a name="line-565"></a> <span class='hs-varid'>sig</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>getSignature</span>
<a name="line-566"></a> <span class='hs-varid'>builtin</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>gets</span> <span class='hs-varid'>stLocalBuiltins</span>
<a name="line-567"></a> <span class='hs-varid'>ms</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>getImports</span>
<a name="line-568"></a> <span class='hs-varid'>hsImps</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>getHaskellImports</span>
<a name="line-569"></a> <span class='hs-varid'>patsyns</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>getPatternSyns</span>
<a name="line-570"></a> <span class='hs-keyword'>let</span> <span class='hs-varid'>builtin'</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Map</span><span class='hs-varop'>.</span><span class='hs-varid'>mapWithKey</span> <span class='hs-layout'>(</span><span class='hs-keyglyph'>\</span><span class='hs-varid'>x</span> <span class='hs-varid'>b</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>fmap</span> <span class='hs-layout'>(</span><span class='hs-keyglyph'>\</span><span class='hs-varid'>pf</span> <span class='hs-keyglyph'>-></span> <span class='hs-layout'>(</span><span class='hs-varid'>x</span><span class='hs-layout'>,</span> <span class='hs-varid'>primFunName</span> <span class='hs-varid'>pf</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <span class='hs-varid'>b</span><span class='hs-layout'>)</span> <span class='hs-varid'>builtin</span>
<a name="line-571"></a> <span class='hs-varid'>reportSLn</span> <span class='hs-str'>"import.iface"</span> <span class='hs-num'>7</span> <span class='hs-str'>" instantiating all meta variables"</span>
<a name="line-572"></a> <span class='hs-varid'>i</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>instantiateFull</span> <span class='hs-varop'>$</span> <span class='hs-conid'>Interface</span>
<a name="line-573"></a> <span class='hs-layout'>{</span> <span class='hs-varid'>iImportedModules</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Set</span><span class='hs-varop'>.</span><span class='hs-varid'>toList</span> <span class='hs-varid'>ms</span>
<a name="line-574"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>iModuleName</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>m</span>
<a name="line-575"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>iScope</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>publicModules</span> <span class='hs-varid'>scope</span>
<a name="line-576"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>iInsideScope</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>insideScope</span> <span class='hs-varid'>topLevel</span>
<a name="line-577"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>iSignature</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>sig</span>
<a name="line-578"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>iBuiltin</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>builtin'</span>
<a name="line-579"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>iHaskellImports</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Set</span><span class='hs-varop'>.</span><span class='hs-varid'>difference</span> <span class='hs-varid'>hsImps</span>
<a name="line-580"></a> <span class='hs-varid'>previousHsImports</span>
<a name="line-581"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>iHighlighting</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>syntaxInfo</span>
<a name="line-582"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>iPragmaOptions</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>pragmas</span>
<a name="line-583"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>iPatternSyns</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>patsyns</span>
<a name="line-584"></a> <span class='hs-layout'>}</span>
<a name="line-585"></a> <span class='hs-varid'>reportSLn</span> <span class='hs-str'>"import.iface"</span> <span class='hs-num'>7</span> <span class='hs-str'>" interface complete"</span>
<a name="line-586"></a> <span class='hs-varid'>return</span> <span class='hs-varid'>i</span>
<a name="line-587"></a> <span class='hs-keyword'>where</span> <span class='hs-varid'>m</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>topLevelModuleName</span> <span class='hs-varid'>topLevel</span>
<a name="line-588"></a>
<a name="line-589"></a><a name="isNewerThan"></a><span class='hs-comment'>-- | True if the first file is newer than the second file. If a file doesn't</span>
<a name="line-590"></a><span class='hs-comment'>-- exist it is considered to be infinitely old.</span>
<a name="line-591"></a><span class='hs-definition'>isNewerThan</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>FilePath</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>FilePath</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-conid'>Bool</span>
<a name="line-592"></a><span class='hs-definition'>isNewerThan</span> <span class='hs-varid'>new</span> <span class='hs-varid'>old</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span>
<a name="line-593"></a> <span class='hs-varid'>newExist</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>doesFileExist</span> <span class='hs-varid'>new</span>
<a name="line-594"></a> <span class='hs-varid'>oldExist</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>doesFileExist</span> <span class='hs-varid'>old</span>
<a name="line-595"></a> <span class='hs-keyword'>if</span> <span class='hs-varid'>not</span> <span class='hs-layout'>(</span><span class='hs-varid'>newExist</span> <span class='hs-varop'>&&</span> <span class='hs-varid'>oldExist</span><span class='hs-layout'>)</span>
<a name="line-596"></a> <span class='hs-keyword'>then</span> <span class='hs-varid'>return</span> <span class='hs-varid'>newExist</span>
<a name="line-597"></a> <span class='hs-keyword'>else</span> <span class='hs-keyword'>do</span>
<a name="line-598"></a> <span class='hs-varid'>newT</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>getModificationTime</span> <span class='hs-varid'>new</span>
<a name="line-599"></a> <span class='hs-varid'>oldT</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>getModificationTime</span> <span class='hs-varid'>old</span>
<a name="line-600"></a> <span class='hs-varid'>return</span> <span class='hs-varop'>$</span> <span class='hs-varid'>newT</span> <span class='hs-varop'>>=</span> <span class='hs-varid'>oldT</span>
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