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<title>src/Language/Haskell/Exts/SrcLoc.hs</title>
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<pre><a name="line-1"></a><span class='hs-comment'>{-# LANGUAGE CPP, DeriveDataTypeable #-}</span>
<a name="line-2"></a><span class='hs-comment'>-----------------------------------------------------------------------------</span>
<a name="line-3"></a><span class='hs-comment'>-- |</span>
<a name="line-4"></a><span class='hs-comment'>-- Module : Language.Haskell.Exts.SrcLoc</span>
<a name="line-5"></a><span class='hs-comment'>-- Copyright : (c) Niklas Broberg 2009</span>
<a name="line-6"></a><span class='hs-comment'>-- License : BSD-style (see the file LICENSE.txt)</span>
<a name="line-7"></a><span class='hs-comment'>--</span>
<a name="line-8"></a><span class='hs-comment'>-- Maintainer : Niklas Broberg, d00nibro@chalmers.se</span>
<a name="line-9"></a><span class='hs-comment'>-- Stability : stable</span>
<a name="line-10"></a><span class='hs-comment'>-- Portability : portable</span>
<a name="line-11"></a><span class='hs-comment'>--</span>
<a name="line-12"></a><span class='hs-comment'>-- This module defines various data types representing source location</span>
<a name="line-13"></a><span class='hs-comment'>-- information, of varying degree of preciseness.</span>
<a name="line-14"></a><span class='hs-comment'>--</span>
<a name="line-15"></a><span class='hs-comment'>-----------------------------------------------------------------------------</span>
<a name="line-16"></a><span class='hs-keyword'>module</span> <span class='hs-conid'>Language</span><span class='hs-varop'>.</span><span class='hs-conid'>Haskell</span><span class='hs-varop'>.</span><span class='hs-conid'>Exts</span><span class='hs-varop'>.</span><span class='hs-conid'>SrcLoc</span> <span class='hs-keyword'>where</span>
<a name="line-17"></a>
<a name="line-18"></a><span class='hs-cpp'>#ifdef __GLASGOW_HASKELL__</span>
<a name="line-19"></a><span class='hs-cpp'>#ifdef BASE4</span>
<a name="line-20"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>Data</span>
<a name="line-21"></a><span class='hs-cpp'>#else</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'>Generics</span> <span class='hs-layout'>(</span><span class='hs-conid'>Data</span><span class='hs-layout'>(</span><span class='hs-keyglyph'>..</span><span class='hs-layout'>)</span><span class='hs-layout'>,</span><span class='hs-conid'>Typeable</span><span class='hs-layout'>(</span><span class='hs-keyglyph'>..</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span>
<a name="line-23"></a><span class='hs-cpp'>#endif</span>
<a name="line-24"></a><span class='hs-cpp'>#endif</span>
<a name="line-25"></a>
<a name="line-26"></a><a name="SrcLoc"></a><span class='hs-comment'>-- | A single position in the source.</span>
<a name="line-27"></a><a name="SrcLoc"></a><span class='hs-keyword'>data</span> <span class='hs-conid'>SrcLoc</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>SrcLoc</span>
<a name="line-28"></a> <span class='hs-layout'>{</span> <span class='hs-varid'>srcFilename</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>String</span>
<a name="line-29"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>srcLine</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-varid'>srcColumn</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Int</span>
<a name="line-31"></a> <span class='hs-layout'>}</span>
<a name="line-32"></a><span class='hs-cpp'>#ifdef __GLASGOW_HASKELL__</span>
<a name="line-33"></a> <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><span class='hs-conid'>Typeable</span><span class='hs-layout'>,</span><span class='hs-conid'>Data</span><span class='hs-layout'>)</span>
<a name="line-34"></a><span class='hs-cpp'>#else</span>
<a name="line-35"></a> <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-36"></a><span class='hs-cpp'>#endif</span>
<a name="line-37"></a>
<a name="line-38"></a>
<a name="line-39"></a><a name="SrcSpan"></a><span class='hs-comment'>-- | A portion of the source, spanning one or more lines and zero or more columns.</span>
<a name="line-40"></a><a name="SrcSpan"></a><span class='hs-keyword'>data</span> <span class='hs-conid'>SrcSpan</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>SrcSpan</span>
<a name="line-41"></a> <span class='hs-layout'>{</span> <span class='hs-varid'>srcSpanFilename</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>String</span>
<a name="line-42"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>srcSpanStartLine</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Int</span>
<a name="line-43"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>srcSpanStartColumn</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Int</span>
<a name="line-44"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>srcSpanEndLine</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Int</span>
<a name="line-45"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>srcSpanEndColumn</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Int</span>
<a name="line-46"></a> <span class='hs-layout'>}</span>
<a name="line-47"></a><span class='hs-cpp'>#ifdef __GLASGOW_HASKELL__</span>
<a name="line-48"></a> <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><span class='hs-conid'>Typeable</span><span class='hs-layout'>,</span><span class='hs-conid'>Data</span><span class='hs-layout'>)</span>
<a name="line-49"></a><span class='hs-cpp'>#else</span>
<a name="line-50"></a> <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-51"></a><span class='hs-cpp'>#endif</span>
<a name="line-52"></a>
<a name="line-53"></a>
<a name="line-54"></a><a name="srcSpanStart"></a><span class='hs-comment'>-- | Returns 'srcSpanStartLine' and 'srcSpanStartColumn' in a pair.</span>
<a name="line-55"></a><span class='hs-definition'>srcSpanStart</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>SrcSpan</span> <span class='hs-keyglyph'>-></span> <span class='hs-layout'>(</span><span class='hs-conid'>Int</span><span class='hs-layout'>,</span><span class='hs-conid'>Int</span><span class='hs-layout'>)</span>
<a name="line-56"></a><span class='hs-definition'>srcSpanStart</span> <span class='hs-varid'>x</span> <span class='hs-keyglyph'>=</span> <span class='hs-layout'>(</span><span class='hs-varid'>srcSpanStartLine</span> <span class='hs-varid'>x</span><span class='hs-layout'>,</span> <span class='hs-varid'>srcSpanStartColumn</span> <span class='hs-varid'>x</span><span class='hs-layout'>)</span>
<a name="line-57"></a>
<a name="line-58"></a><a name="srcSpanEnd"></a><span class='hs-comment'>-- | Returns 'srcSpanEndLine' and 'srcSpanEndColumn' in a pair.</span>
<a name="line-59"></a><span class='hs-definition'>srcSpanEnd</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>SrcSpan</span> <span class='hs-keyglyph'>-></span> <span class='hs-layout'>(</span><span class='hs-conid'>Int</span><span class='hs-layout'>,</span><span class='hs-conid'>Int</span><span class='hs-layout'>)</span>
<a name="line-60"></a><span class='hs-definition'>srcSpanEnd</span> <span class='hs-varid'>x</span> <span class='hs-keyglyph'>=</span> <span class='hs-layout'>(</span><span class='hs-varid'>srcSpanEndLine</span> <span class='hs-varid'>x</span><span class='hs-layout'>,</span> <span class='hs-varid'>srcSpanEndColumn</span> <span class='hs-varid'>x</span><span class='hs-layout'>)</span>
<a name="line-61"></a>
<a name="line-62"></a>
<a name="line-63"></a><a name="mkSrcSpan"></a><span class='hs-comment'>-- | Combine two locations in the source to denote a span.</span>
<a name="line-64"></a><span class='hs-definition'>mkSrcSpan</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>SrcLoc</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>SrcLoc</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>SrcSpan</span>
<a name="line-65"></a><span class='hs-definition'>mkSrcSpan</span> <span class='hs-layout'>(</span><span class='hs-conid'>SrcLoc</span> <span class='hs-varid'>fn</span> <span class='hs-varid'>sl</span> <span class='hs-varid'>sc</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-conid'>SrcLoc</span> <span class='hs-keyword'>_</span> <span class='hs-varid'>el</span> <span class='hs-varid'>ec</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>SrcSpan</span> <span class='hs-varid'>fn</span> <span class='hs-varid'>sl</span> <span class='hs-varid'>sc</span> <span class='hs-varid'>el</span> <span class='hs-varid'>ec</span>
<a name="line-66"></a>
<a name="line-67"></a><a name="mergeSrcSpan"></a><span class='hs-comment'>-- | Merge two source spans into a single span from the start of the first</span>
<a name="line-68"></a><span class='hs-comment'>-- to the end of the second. Assumes that the two spans relate to the</span>
<a name="line-69"></a><span class='hs-comment'>-- same source file.</span>
<a name="line-70"></a><span class='hs-definition'>mergeSrcSpan</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>SrcSpan</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>SrcSpan</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>SrcSpan</span>
<a name="line-71"></a><span class='hs-definition'>mergeSrcSpan</span> <span class='hs-layout'>(</span><span class='hs-conid'>SrcSpan</span> <span class='hs-varid'>fn</span> <span class='hs-varid'>sl1</span> <span class='hs-varid'>sc1</span> <span class='hs-varid'>el1</span> <span class='hs-varid'>ec1</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-conid'>SrcSpan</span> <span class='hs-keyword'>_</span> <span class='hs-varid'>sl2</span> <span class='hs-varid'>sc2</span> <span class='hs-varid'>el2</span> <span class='hs-varid'>ec2</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span>
<a name="line-72"></a> <span class='hs-keyword'>let</span> <span class='hs-layout'>(</span><span class='hs-varid'>sl</span><span class='hs-layout'>,</span><span class='hs-varid'>sc</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>min</span> <span class='hs-layout'>(</span><span class='hs-varid'>sl1</span><span class='hs-layout'>,</span><span class='hs-varid'>sc1</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-varid'>sl2</span><span class='hs-layout'>,</span><span class='hs-varid'>sc2</span><span class='hs-layout'>)</span>
<a name="line-73"></a> <span class='hs-layout'>(</span><span class='hs-varid'>el</span><span class='hs-layout'>,</span><span class='hs-varid'>ec</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>max</span> <span class='hs-layout'>(</span><span class='hs-varid'>el1</span><span class='hs-layout'>,</span><span class='hs-varid'>ec1</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-varid'>el2</span><span class='hs-layout'>,</span><span class='hs-varid'>ec2</span><span class='hs-layout'>)</span>
<a name="line-74"></a> <span class='hs-keyword'>in</span> <span class='hs-conid'>SrcSpan</span> <span class='hs-varid'>fn</span> <span class='hs-varid'>sl</span> <span class='hs-varid'>sc</span> <span class='hs-varid'>el</span> <span class='hs-varid'>ec</span>
<a name="line-75"></a>
<a name="line-76"></a><a name="isNullSpan"></a><span class='hs-comment'>-- | Test if a given span starts and ends at the same location.</span>
<a name="line-77"></a><span class='hs-definition'>isNullSpan</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>SrcSpan</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Bool</span>
<a name="line-78"></a><span class='hs-definition'>isNullSpan</span> <span class='hs-varid'>ss</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>srcSpanStartLine</span> <span class='hs-varid'>ss</span> <span class='hs-varop'>==</span> <span class='hs-varid'>srcSpanEndLine</span> <span class='hs-varid'>ss</span> <span class='hs-varop'>&&</span>
<a name="line-79"></a> <span class='hs-varid'>srcSpanStartColumn</span> <span class='hs-varid'>ss</span> <span class='hs-varop'>>=</span> <span class='hs-varid'>srcSpanEndColumn</span> <span class='hs-varid'>ss</span>
<a name="line-80"></a>
<a name="line-81"></a><a name="Loc"></a><span class='hs-comment'>-- | An entity located in the source.</span>
<a name="line-82"></a><a name="Loc"></a><span class='hs-keyword'>data</span> <span class='hs-conid'>Loc</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Loc</span>
<a name="line-83"></a> <span class='hs-layout'>{</span> <span class='hs-varid'>loc</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>SrcSpan</span>
<a name="line-84"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>unLoc</span> <span class='hs-keyglyph'>::</span> <span class='hs-varid'>a</span>
<a name="line-85"></a> <span class='hs-layout'>}</span>
<a name="line-86"></a> <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-87"></a>
<a name="line-88"></a>
<a name="line-89"></a><a name="SrcSpanInfo"></a><span class='hs-comment'>-- | A portion of the source, extended with information on the position of entities within the span.</span>
<a name="line-90"></a><a name="SrcSpanInfo"></a><span class='hs-keyword'>data</span> <span class='hs-conid'>SrcSpanInfo</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>SrcSpanInfo</span>
<a name="line-91"></a> <span class='hs-layout'>{</span> <span class='hs-varid'>srcInfoSpan</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>SrcSpan</span>
<a name="line-92"></a><span class='hs-comment'>-- , explLayout :: Bool</span>
<a name="line-93"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>srcInfoPoints</span> <span class='hs-keyglyph'>::</span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>SrcSpan</span><span class='hs-keyglyph'>]</span> <span class='hs-comment'>-- Marks the location of specific entities inside the span</span>
<a name="line-94"></a> <span class='hs-layout'>}</span>
<a name="line-95"></a><span class='hs-cpp'>#ifdef __GLASGOW_HASKELL__</span>
<a name="line-96"></a> <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><span class='hs-conid'>Typeable</span><span class='hs-layout'>,</span><span class='hs-conid'>Data</span><span class='hs-layout'>)</span>
<a name="line-97"></a><span class='hs-cpp'>#else</span>
<a name="line-98"></a> <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-99"></a><span class='hs-cpp'>#endif</span>
<a name="line-100"></a>
<a name="line-101"></a><a name="noInfoSpan"></a><span class='hs-comment'>-- | Generate a 'SrcSpanInfo' with no positional information for entities.</span>
<a name="line-102"></a><span class='hs-definition'>noInfoSpan</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>SrcSpan</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>SrcSpanInfo</span>
<a name="line-103"></a><span class='hs-definition'>noInfoSpan</span> <span class='hs-varid'>ss</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>SrcSpanInfo</span> <span class='hs-varid'>ss</span> <span class='hs-conid'>[]</span>
<a name="line-104"></a>
<a name="line-105"></a><a name="infoSpan"></a><span class='hs-comment'>-- | Generate a 'SrcSpanInfo' with the supplied positional information for entities.</span>
<a name="line-106"></a><span class='hs-definition'>infoSpan</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>SrcSpan</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>SrcSpan</span><span class='hs-keyglyph'>]</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>SrcSpanInfo</span>
<a name="line-107"></a><span class='hs-definition'>infoSpan</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>SrcSpanInfo</span>
<a name="line-108"></a>
<a name="line-109"></a><a name="combSpanInfo"></a><span class='hs-comment'>-- | Combine two 'SrcSpanInfo's into one that spans the combined source area of</span>
<a name="line-110"></a><span class='hs-comment'>-- the two arguments, leaving positional information blank.</span>
<a name="line-111"></a><span class='hs-definition'>combSpanInfo</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>SrcSpanInfo</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>SrcSpanInfo</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>SrcSpanInfo</span>
<a name="line-112"></a><span class='hs-definition'>combSpanInfo</span> <span class='hs-varid'>s1</span> <span class='hs-varid'>s2</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>SrcSpanInfo</span>
<a name="line-113"></a> <span class='hs-layout'>(</span><span class='hs-varid'>mergeSrcSpan</span> <span class='hs-layout'>(</span><span class='hs-varid'>srcInfoSpan</span> <span class='hs-varid'>s1</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-varid'>srcInfoSpan</span> <span class='hs-varid'>s2</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span>
<a name="line-114"></a> <span class='hs-conid'>[]</span>
<a name="line-115"></a>
<a name="line-116"></a><a name="<++>"></a><span class='hs-comment'>-- | Short name for 'combSpanInfo'</span>
<a name="line-117"></a><span class='hs-layout'>(</span><span class='hs-varop'><++></span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>SrcSpanInfo</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>SrcSpanInfo</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>SrcSpanInfo</span>
<a name="line-118"></a><span class='hs-layout'>(</span><span class='hs-varop'><++></span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>combSpanInfo</span>
<a name="line-119"></a>
<a name="line-120"></a><a name="<+?>"></a><span class='hs-comment'>-- | Optionally combine the first argument with the second,</span>
<a name="line-121"></a><span class='hs-comment'>-- or return it unchanged if the second argument is 'Nothing'.</span>
<a name="line-122"></a><span class='hs-layout'>(</span><span class='hs-varop'><+?></span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>SrcSpanInfo</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Maybe</span> <span class='hs-conid'>SrcSpanInfo</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>SrcSpanInfo</span>
<a name="line-123"></a><a name="a"></a><span class='hs-definition'>a</span> <span class='hs-varop'><+?></span> <span class='hs-varid'>b</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>case</span> <span class='hs-varid'>b</span> <span class='hs-keyword'>of</span> <span class='hs-layout'>{</span><span class='hs-conid'>Nothing</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>a</span><span class='hs-layout'>;</span> <span class='hs-conid'>Just</span> <span class='hs-varid'>b</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>a</span> <span class='hs-varop'><++></span> <span class='hs-varid'>b</span><span class='hs-layout'>}</span>
<a name="line-124"></a>
<a name="line-125"></a><a name="<?+>"></a><span class='hs-comment'>-- | Optionally combine the second argument with the first,</span>
<a name="line-126"></a><span class='hs-comment'>-- or return it unchanged if the first argument is 'Nothing'.</span>
<a name="line-127"></a><span class='hs-layout'>(</span><span class='hs-varop'><?+></span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Maybe</span> <span class='hs-conid'>SrcSpanInfo</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>SrcSpanInfo</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>SrcSpanInfo</span>
<a name="line-128"></a><span class='hs-definition'>a</span> <span class='hs-varop'><?+></span> <span class='hs-varid'>b</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>case</span> <span class='hs-varid'>a</span> <span class='hs-keyword'>of</span> <span class='hs-layout'>{</span><span class='hs-conid'>Nothing</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>b</span><span class='hs-layout'>;</span> <span class='hs-conid'>Just</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>a</span> <span class='hs-varop'><++></span> <span class='hs-varid'>b</span><span class='hs-layout'>}</span>
<a name="line-129"></a>
<a name="line-130"></a><a name="<**"></a><span class='hs-comment'>-- | Add more positional information for entities of a span.</span>
<a name="line-131"></a><span class='hs-layout'>(</span><span class='hs-varop'><**</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>SrcSpanInfo</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>SrcSpan</span><span class='hs-keyglyph'>]</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>SrcSpanInfo</span>
<a name="line-132"></a><a name="ss"></a><span class='hs-definition'>ss</span><span class='hs-keyglyph'>@</span><span class='hs-layout'>(</span><span class='hs-conid'>SrcSpanInfo</span> <span class='hs-layout'>{</span><span class='hs-varid'>srcInfoPoints</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>ps</span><span class='hs-layout'>}</span><span class='hs-layout'>)</span> <span class='hs-varop'><**</span> <span class='hs-varid'>xs</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>ss</span> <span class='hs-layout'>{</span><span class='hs-varid'>srcInfoPoints</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>ps</span> <span class='hs-varop'>++</span> <span class='hs-varid'>xs</span><span class='hs-layout'>}</span>
<a name="line-133"></a>
<a name="line-134"></a><a name="<^^>"></a><span class='hs-comment'>-- | Merge two 'SrcSpan's and lift them to a 'SrcInfoSpan' with</span>
<a name="line-135"></a><span class='hs-comment'>-- no positional information for entities.</span>
<a name="line-136"></a><span class='hs-layout'>(</span><span class='hs-varop'><^^></span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>SrcSpan</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>SrcSpan</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>SrcSpanInfo</span>
<a name="line-137"></a><span class='hs-definition'>a</span> <span class='hs-varop'><^^></span> <span class='hs-varid'>b</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>noInfoSpan</span> <span class='hs-layout'>(</span><span class='hs-varid'>mergeSrcSpan</span> <span class='hs-varid'>a</span> <span class='hs-varid'>b</span><span class='hs-layout'>)</span>
<a name="line-138"></a>
<a name="line-139"></a><span class='hs-keyword'>infixl</span> <span class='hs-num'>6</span> <span class='hs-varop'><^^></span>
<a name="line-140"></a><span class='hs-keyword'>infixl</span> <span class='hs-num'>5</span> <span class='hs-varop'><++></span>
<a name="line-141"></a><span class='hs-keyword'>infixl</span> <span class='hs-num'>4</span> <span class='hs-varop'><**</span><span class='hs-layout'>,</span> <span class='hs-varop'><+?></span><span class='hs-layout'>,</span> <span class='hs-varop'><?+></span>
<a name="line-142"></a>
<a name="line-143"></a><a name="SrcInfo"></a><span class='hs-comment'>-- | A class to work over all kinds of source location information.</span>
<a name="line-144"></a><a name="SrcInfo"></a><span class='hs-keyword'>class</span> <span class='hs-conid'>SrcInfo</span> <span class='hs-varid'>si</span> <span class='hs-keyword'>where</span>
<a name="line-145"></a> <span class='hs-varid'>toSrcInfo</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>SrcLoc</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>SrcSpan</span><span class='hs-keyglyph'>]</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>SrcLoc</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>si</span>
<a name="line-146"></a> <span class='hs-varid'>fromSrcInfo</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>SrcSpanInfo</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>si</span>
<a name="line-147"></a> <span class='hs-varid'>getPointLoc</span> <span class='hs-keyglyph'>::</span> <span class='hs-varid'>si</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>SrcLoc</span>
<a name="line-148"></a> <span class='hs-varid'>fileName</span> <span class='hs-keyglyph'>::</span> <span class='hs-varid'>si</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>String</span>
<a name="line-149"></a> <span class='hs-varid'>startLine</span> <span class='hs-keyglyph'>::</span> <span class='hs-varid'>si</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Int</span>
<a name="line-150"></a> <span class='hs-varid'>startColumn</span> <span class='hs-keyglyph'>::</span> <span class='hs-varid'>si</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Int</span>
<a name="line-151"></a>
<a name="line-152"></a> <span class='hs-varid'>getPointLoc</span> <span class='hs-varid'>si</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>SrcLoc</span> <span class='hs-layout'>(</span><span class='hs-varid'>fileName</span> <span class='hs-varid'>si</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-varid'>startLine</span> <span class='hs-varid'>si</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-varid'>startColumn</span> <span class='hs-varid'>si</span><span class='hs-layout'>)</span>
<a name="line-153"></a>
<a name="line-154"></a><span class='hs-keyword'>instance</span> <span class='hs-conid'>SrcInfo</span> <span class='hs-conid'>SrcLoc</span> <span class='hs-keyword'>where</span>
<a name="line-155"></a> <span class='hs-varid'>toSrcInfo</span> <span class='hs-varid'>s</span> <span class='hs-keyword'>_</span> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>s</span>
<a name="line-156"></a> <span class='hs-varid'>fromSrcInfo</span> <span class='hs-varid'>si</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>SrcLoc</span> <span class='hs-layout'>(</span><span class='hs-varid'>fileName</span> <span class='hs-varid'>si</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-varid'>startLine</span> <span class='hs-varid'>si</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-varid'>startColumn</span> <span class='hs-varid'>si</span><span class='hs-layout'>)</span>
<a name="line-157"></a> <span class='hs-varid'>fileName</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>srcFilename</span>
<a name="line-158"></a> <span class='hs-varid'>startLine</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>srcLine</span>
<a name="line-159"></a> <span class='hs-varid'>startColumn</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>srcColumn</span>
<a name="line-160"></a>
<a name="line-161"></a><span class='hs-keyword'>instance</span> <span class='hs-conid'>SrcInfo</span> <span class='hs-conid'>SrcSpan</span> <span class='hs-keyword'>where</span>
<a name="line-162"></a> <span class='hs-varid'>toSrcInfo</span> <span class='hs-varid'>st</span> <span class='hs-keyword'>_</span> <span class='hs-varid'>end</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>mkSrcSpan</span> <span class='hs-varid'>st</span> <span class='hs-varid'>end</span>
<a name="line-163"></a> <span class='hs-varid'>fromSrcInfo</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>srcInfoSpan</span>
<a name="line-164"></a> <span class='hs-varid'>fileName</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>srcSpanFilename</span>
<a name="line-165"></a> <span class='hs-varid'>startLine</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>srcSpanStartLine</span>
<a name="line-166"></a> <span class='hs-varid'>startColumn</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>srcSpanStartColumn</span>
<a name="line-167"></a>
<a name="line-168"></a><span class='hs-keyword'>instance</span> <span class='hs-conid'>SrcInfo</span> <span class='hs-conid'>SrcSpanInfo</span> <span class='hs-keyword'>where</span>
<a name="line-169"></a> <span class='hs-varid'>toSrcInfo</span> <span class='hs-varid'>st</span> <span class='hs-varid'>pts</span> <span class='hs-varid'>end</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>SrcSpanInfo</span> <span class='hs-layout'>(</span><span class='hs-varid'>mkSrcSpan</span> <span class='hs-varid'>st</span> <span class='hs-varid'>end</span><span class='hs-layout'>)</span> <span class='hs-varid'>pts</span>
<a name="line-170"></a> <span class='hs-varid'>fromSrcInfo</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>id</span>
<a name="line-171"></a> <span class='hs-varid'>fileName</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>fileName</span> <span class='hs-varop'>.</span> <span class='hs-varid'>srcInfoSpan</span>
<a name="line-172"></a> <span class='hs-varid'>startLine</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>startLine</span> <span class='hs-varop'>.</span> <span class='hs-varid'>srcInfoSpan</span>
<a name="line-173"></a> <span class='hs-varid'>startColumn</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>startColumn</span> <span class='hs-varop'>.</span> <span class='hs-varid'>srcInfoSpan</span>
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