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<title>src/Data/WithLocation.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'>{-# LANGUAGE Rank2Types #-}</span>
<a name="line-3"></a>
<a name="line-4"></a><span class='hs-cpp'>#if MIN_VERSION_base(4,8,1)</span>
<a name="line-5"></a><span class='hs-cpp'>#define HAS_SOURCE_LOCATIONS</span>
<a name="line-6"></a><span class='hs-comment'>{-# LANGUAGE ImplicitParams #-}</span>
<a name="line-7"></a><span class='hs-cpp'>#endif</span>
<a name="line-8"></a>
<a name="line-9"></a><span class='hs-keyword'>module</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>WithLocation</span> <span class='hs-keyword'>where</span>
<a name="line-10"></a>
<a name="line-11"></a><span class='hs-cpp'>#ifdef HAS_SOURCE_LOCATIONS</span>
<a name="line-12"></a><span class='hs-cpp'>#if !(MIN_VERSION_base(4,9,0))</span>
<a name="line-13"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>GHC</span><span class='hs-varop'>.</span><span class='hs-conid'>SrcLoc</span>
<a name="line-14"></a><span class='hs-cpp'>#endif</span>
<a name="line-15"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>GHC</span><span class='hs-varop'>.</span><span class='hs-conid'>Stack</span>
<a name="line-16"></a><span class='hs-cpp'>#endif</span>
<a name="line-17"></a>
<a name="line-18"></a><span class='hs-cpp'>#ifdef HAS_SOURCE_LOCATIONS</span>
<a name="line-19"></a><a name="WithLocation"></a><span class='hs-keyword'>type</span> <span class='hs-conid'>WithLocation</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>=</span> <span class='hs-layout'>(</span><span class='hs-varop'>?</span><span class='hs-varid'>loc</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>CallStack</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=></span> <span class='hs-varid'>a</span>
<a name="line-20"></a><span class='hs-cpp'>#else</span>
<a name="line-21"></a><a name="WithLocation"></a><span class='hs-keyword'>type</span> <span class='hs-conid'>WithLocation</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>a</span>
<a name="line-22"></a><span class='hs-cpp'>#endif</span>
<a name="line-23"></a>
<a name="line-24"></a><a name="Location"></a><span class='hs-keyword'>data</span> <span class='hs-conid'>Location</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Location</span> <span class='hs-layout'>{</span>
<a name="line-25"></a> <span class='hs-varid'>locationPackage</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>String</span>
<a name="line-26"></a><span class='hs-layout'>,</span> <span class='hs-varid'>locationModule</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>String</span>
<a name="line-27"></a><span class='hs-layout'>,</span> <span class='hs-varid'>locationFile</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>FilePath</span>
<a name="line-28"></a><span class='hs-layout'>,</span> <span class='hs-varid'>locationLine</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Int</span>
<a name="line-29"></a><span class='hs-layout'>,</span> <span class='hs-varid'>locationColumn</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Int</span>
<a name="line-30"></a><span class='hs-layout'>}</span> <span class='hs-keyword'>deriving</span> <span class='hs-layout'>(</span><span class='hs-conid'>Eq</span><span class='hs-layout'>,</span> <span class='hs-conid'>Ord</span><span class='hs-layout'>,</span> <span class='hs-conid'>Show</span><span class='hs-layout'>)</span>
<a name="line-31"></a>
<a name="line-32"></a><a name="location"></a><span class='hs-definition'>location</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>WithLocation</span> <span class='hs-layout'>(</span><span class='hs-conid'>Maybe</span> <span class='hs-conid'>Location</span><span class='hs-layout'>)</span>
<a name="line-33"></a><span class='hs-cpp'>#ifdef HAS_SOURCE_LOCATIONS</span>
<a name="line-34"></a><span class='hs-definition'>location</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>case</span> <span class='hs-varid'>reverse</span> <span class='hs-layout'>(</span><span class='hs-varid'>getCallStack</span> <span class='hs-varop'>?</span><span class='hs-varid'>loc</span><span class='hs-layout'>)</span> <span class='hs-keyword'>of</span>
<a name="line-35"></a> <span class='hs-layout'>(</span><span class='hs-keyword'>_</span><span class='hs-layout'>,</span> <span class='hs-varid'>loc</span><span class='hs-layout'>)</span> <span class='hs-conop'>:</span> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Just</span> <span class='hs-varop'>$</span> <span class='hs-conid'>Location</span> <span class='hs-layout'>(</span><span class='hs-varid'>srcLocPackage</span> <span class='hs-varid'>loc</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-varid'>srcLocModule</span> <span class='hs-varid'>loc</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-varid'>srcLocFile</span> <span class='hs-varid'>loc</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-varid'>srcLocStartLine</span> <span class='hs-varid'>loc</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-varid'>srcLocStartCol</span> <span class='hs-varid'>loc</span><span class='hs-layout'>)</span>
<a name="line-36"></a> <span class='hs-conid'>[]</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Nothing</span>
<a name="line-37"></a><span class='hs-cpp'>#else</span>
<a name="line-38"></a><span class='hs-definition'>location</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Nothing</span>
<a name="line-39"></a><span class='hs-cpp'>#endif</span>
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