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<title>src/full/Agda/Interaction/Highlighting/LaTeX.hs</title>
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<pre><a name="line-1"></a><span class='hs-comment'>{-# LANGUAGE CPP, ViewPatterns #-}</span>
<a name="line-2"></a>
<a name="line-3"></a><span class='hs-comment'>-- | Function for generating highlighted and aligned LaTeX from literate</span>
<a name="line-4"></a><span class='hs-comment'>-- Agda source.</span>
<a name="line-5"></a>
<a name="line-6"></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'>Highlighting</span><span class='hs-varop'>.</span><span class='hs-conid'>LaTeX</span>
<a name="line-7"></a> <span class='hs-layout'>(</span> <span class='hs-varid'>generateLaTeX</span>
<a name="line-8"></a> <span class='hs-layout'>)</span> <span class='hs-keyword'>where</span>
<a name="line-9"></a>
<a name="line-10"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>Char</span>
<a name="line-11"></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-12"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>Function</span>
<a name="line-13"></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-14"></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'>RWS</span>
<a name="line-15"></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-16"></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'>Trans</span>
<a name="line-17"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>System</span><span class='hs-varop'>.</span><span class='hs-conid'>Directory</span>
<a name="line-18"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>System</span><span class='hs-varop'>.</span><span class='hs-conid'>FilePath</span>
<a name="line-19"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>System</span><span class='hs-varop'>.</span><span class='hs-conid'>Process</span>
<a name="line-20"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>System</span><span class='hs-varop'>.</span><span class='hs-conid'>Exit</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'>Text</span> <span class='hs-layout'>(</span><span class='hs-conid'>Text</span><span class='hs-layout'>)</span>
<a name="line-22"></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'>Text</span> <span class='hs-keyword'>as</span> <span class='hs-conid'>T</span>
<a name="line-23"></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'>Text</span><span class='hs-varop'>.</span><span class='hs-conid'>Encoding</span> <span class='hs-keyword'>as</span> <span class='hs-conid'>E</span>
<a name="line-24"></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-keyword'>as</span> <span class='hs-conid'>BS</span>
<a name="line-25"></a>
<a name="line-26"></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-27"></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-28"></a>
<a name="line-29"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Paths_Agda</span>
<a name="line-30"></a>
<a name="line-31"></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'>Common</span>
<a name="line-32"></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-33"></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>
<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'>TypeChecking</span><span class='hs-varop'>.</span><span class='hs-conid'>Monad</span> <span class='hs-layout'>(</span><span class='hs-conid'>TCM</span><span class='hs-layout'>)</span>
<a name="line-35"></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'>TypeChecking</span><span class='hs-varop'>.</span><span class='hs-conid'>Monad</span> <span class='hs-keyword'>as</span> <span class='hs-conid'>TCM</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'>Interaction</span><span class='hs-varop'>.</span><span class='hs-conid'>Options</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'>Compiler</span><span class='hs-varop'>.</span><span class='hs-conid'>CallCompiler</span>
<a name="line-38"></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'>Utils</span><span class='hs-varop'>.</span><span class='hs-conid'>IO</span><span class='hs-varop'>.</span><span class='hs-conid'>UTF8</span> <span class='hs-keyword'>as</span> <span class='hs-conid'>UTF8</span>
<a name="line-39"></a>
<a name="line-40"></a><span class='hs-cpp'>#include "../../undefined.h"</span>
<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'>Utils</span><span class='hs-varop'>.</span><span class='hs-conid'>Impossible</span>
<a name="line-42"></a>
<a name="line-43"></a><span class='hs-comment'>------------------------------------------------------------------------</span>
<a name="line-44"></a><span class='hs-comment'>-- * Datatypes.</span>
<a name="line-45"></a>
<a name="line-46"></a><a name="LaTeX"></a><span class='hs-comment'>-- | The @LaTeX@ monad is a combination of @ErrorT@ and @RWS@. The error</span>
<a name="line-47"></a><a name="LaTeX"></a><span class='hs-comment'>-- part is just used to keep track whether we finished or not, the</span>
<a name="line-48"></a><a name="LaTeX"></a><span class='hs-comment'>-- reader part isn't used, the writer is where the output goes and the</span>
<a name="line-49"></a><a name="LaTeX"></a><span class='hs-comment'>-- state is for keeping track of the tokens and some other useful info.</span>
<a name="line-50"></a><a name="LaTeX"></a><span class='hs-keyword'>type</span> <span class='hs-conid'>LaTeX</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>ErrorT</span> <span class='hs-conid'>String</span> <span class='hs-layout'>(</span><span class='hs-conid'>RWS</span> <span class='hs-conid'>()</span> <span class='hs-conid'>Text</span> <span class='hs-conid'>State</span><span class='hs-layout'>)</span>
<a name="line-51"></a>
<a name="line-52"></a><a name="State"></a><span class='hs-keyword'>data</span> <span class='hs-conid'>State</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>State</span>
<a name="line-53"></a> <span class='hs-layout'>{</span> <span class='hs-varid'>tokens</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Tokens</span>
<a name="line-54"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>column</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Int</span> <span class='hs-comment'>-- ^ Column number, used for polytable alignment.</span>
<a name="line-55"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>indent</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Int</span> <span class='hs-comment'>-- ^ Indentation level, also for alignment.</span>
<a name="line-56"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>indentPrev</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Int</span>
<a name="line-57"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>inCode</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Bool</span> <span class='hs-comment'>-- ^ Keeps track of whether we are in a code</span>
<a name="line-58"></a> <span class='hs-comment'>-- block or not.</span>
<a name="line-59"></a> <span class='hs-layout'>}</span>
<a name="line-60"></a>
<a name="line-61"></a><a name="Tokens"></a><span class='hs-keyword'>type</span> <span class='hs-conid'>Tokens</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>Token</span><span class='hs-keyglyph'>]</span>
<a name="line-62"></a>
<a name="line-63"></a><a name="Token"></a><span class='hs-keyword'>data</span> <span class='hs-conid'>Token</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Token</span>
<a name="line-64"></a> <span class='hs-layout'>{</span> <span class='hs-varid'>string</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Text</span>
<a name="line-65"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>info</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>MetaInfo</span>
<a name="line-66"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>position</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Integer</span> <span class='hs-comment'>-- ^ Is not used currently, but could</span>
<a name="line-67"></a> <span class='hs-comment'>-- potentially be used for hyperlinks as in</span>
<a name="line-68"></a> <span class='hs-comment'>-- the HTML output?</span>
<a name="line-69"></a> <span class='hs-layout'>}</span>
<a name="line-70"></a>
<a name="line-71"></a><a name="runLaTeX"></a><span class='hs-comment'>-- | Run function for the @LaTeX@ monad.</span>
<a name="line-72"></a><span class='hs-definition'>runLaTeX</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>LaTeX</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>()</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>State</span> <span class='hs-keyglyph'>-></span> <span class='hs-layout'>(</span><span class='hs-conid'>Either</span> <span class='hs-conid'>String</span> <span class='hs-varid'>a</span><span class='hs-layout'>,</span> <span class='hs-conid'>State</span><span class='hs-layout'>,</span> <span class='hs-conid'>Text</span><span class='hs-layout'>)</span>
<a name="line-73"></a><span class='hs-definition'>runLaTeX</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>runRWS</span> <span class='hs-varop'>.</span> <span class='hs-varid'>runErrorT</span>
<a name="line-74"></a>
<a name="line-75"></a><a name="emptyState"></a><span class='hs-definition'>emptyState</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>State</span>
<a name="line-76"></a><span class='hs-definition'>emptyState</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>State</span>
<a name="line-77"></a> <span class='hs-layout'>{</span> <span class='hs-varid'>tokens</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>[]</span>
<a name="line-78"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>column</span> <span class='hs-keyglyph'>=</span> <span class='hs-num'>0</span>
<a name="line-79"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>indent</span> <span class='hs-keyglyph'>=</span> <span class='hs-num'>0</span>
<a name="line-80"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>indentPrev</span> <span class='hs-keyglyph'>=</span> <span class='hs-num'>0</span>
<a name="line-81"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>inCode</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>False</span>
<a name="line-82"></a> <span class='hs-layout'>}</span>
<a name="line-83"></a>
<a name="line-84"></a><span class='hs-comment'>------------------------------------------------------------------------</span>
<a name="line-85"></a><span class='hs-comment'>-- * Some helpers.</span>
<a name="line-86"></a>
<a name="line-87"></a><a name="%3c+%3e"></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'>T</span><span class='hs-varop'>.</span><span class='hs-varid'>append</span>
<a name="line-88"></a>
<a name="line-89"></a><a name="isInfixOf'"></a><span class='hs-definition'>isInfixOf'</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Text</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Text</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Maybe</span> <span class='hs-layout'>(</span><span class='hs-conid'>Text</span><span class='hs-layout'>,</span> <span class='hs-conid'>Text</span><span class='hs-layout'>)</span>
<a name="line-90"></a><span class='hs-definition'>isInfixOf'</span> <span class='hs-varid'>needle</span> <span class='hs-varid'>haystack</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>go</span> <span class='hs-layout'>(</span><span class='hs-conid'>T</span><span class='hs-varop'>.</span><span class='hs-varid'>tails</span> <span class='hs-varid'>haystack</span><span class='hs-layout'>)</span> <span class='hs-num'>0</span>
<a name="line-91"></a> <span class='hs-keyword'>where</span>
<a name="line-92"></a> <span class='hs-varid'>go</span> <span class='hs-conid'>[]</span> <span class='hs-varid'>n</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Nothing</span>
<a name="line-93"></a> <span class='hs-varid'>go</span> <span class='hs-layout'>(</span><span class='hs-layout'>(</span><span class='hs-conid'>T</span><span class='hs-varop'>.</span><span class='hs-varid'>stripPrefix</span> <span class='hs-varid'>needle</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Just</span> <span class='hs-varid'>suf</span><span class='hs-layout'>)</span> <span class='hs-conop'>:</span> <span class='hs-varid'>xss</span><span class='hs-layout'>)</span> <span class='hs-varid'>n</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Just</span> <span class='hs-layout'>(</span><span class='hs-conid'>T</span><span class='hs-varop'>.</span><span class='hs-varid'>take</span> <span class='hs-varid'>n</span> <span class='hs-varid'>haystack</span><span class='hs-layout'>,</span> <span class='hs-varid'>suf</span><span class='hs-layout'>)</span>
<a name="line-94"></a> <span class='hs-varid'>go</span> <span class='hs-layout'>(</span><span class='hs-keyword'>_</span> <span class='hs-conop'>:</span> <span class='hs-varid'>xss</span><span class='hs-layout'>)</span> <span class='hs-varid'>n</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>go</span> <span class='hs-varid'>xss</span> <span class='hs-layout'>(</span><span class='hs-varid'>n</span> <span class='hs-varop'>+</span> <span class='hs-num'>1</span><span class='hs-layout'>)</span>
<a name="line-95"></a>
<a name="line-96"></a><a name="isSpaces"></a><span class='hs-definition'>isSpaces</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Text</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Bool</span>
<a name="line-97"></a><span class='hs-definition'>isSpaces</span> <span class='hs-layout'>(</span><span class='hs-conid'>T</span><span class='hs-varop'>.</span><span class='hs-varid'>uncons</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Nothing</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>True</span>
<a name="line-98"></a><span class='hs-definition'>isSpaces</span> <span class='hs-layout'>(</span><span class='hs-conid'>T</span><span class='hs-varop'>.</span><span class='hs-varid'>uncons</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Just</span> <span class='hs-layout'>(</span><span class='hs-varid'>c</span><span class='hs-layout'>,</span> <span class='hs-varid'>s</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>isSpace</span> <span class='hs-varid'>c</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>isSpaces</span> <span class='hs-varid'>s</span>
<a name="line-99"></a> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>otherwise</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>False</span>
<a name="line-100"></a>
<a name="line-101"></a><span class='hs-definition'>isSpaces</span> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'>=</span> <span class='hs-sel'>__IMPOSSIBLE__</span>
<a name="line-102"></a>
<a name="line-103"></a><a name="nextToken'"></a><span class='hs-comment'>-- | Yields the next token, taking special care to begin/end code</span>
<a name="line-104"></a><span class='hs-comment'>-- blocks. Junk occuring before and after the code blocks is separated</span>
<a name="line-105"></a><span class='hs-comment'>-- into separate tokens, this makes it easier to keep track of whether</span>
<a name="line-106"></a><span class='hs-comment'>-- we are in a code block or not.</span>
<a name="line-107"></a><span class='hs-definition'>nextToken'</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>LaTeX</span> <span class='hs-conid'>Token</span>
<a name="line-108"></a><span class='hs-definition'>nextToken'</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span>
<a name="line-109"></a> <span class='hs-varid'>toks</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>gets</span> <span class='hs-varid'>tokens</span>
<a name="line-110"></a> <span class='hs-keyword'>case</span> <span class='hs-varid'>toks</span> <span class='hs-keyword'>of</span>
<a name="line-111"></a> <span class='hs-conid'>[]</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>throwError</span> <span class='hs-str'>"Done"</span>
<a name="line-112"></a>
<a name="line-113"></a> <span class='hs-comment'>-- Clean begin/end code block or a LaTeX comment.</span>
<a name="line-114"></a> <span class='hs-varid'>t</span> <span class='hs-conop'>:</span> <span class='hs-varid'>ts</span> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>string</span> <span class='hs-varid'>t</span> <span class='hs-varop'>==</span> <span class='hs-varid'>beginCode</span> <span class='hs-varop'>||</span> <span class='hs-varid'>string</span> <span class='hs-varid'>t</span> <span class='hs-varop'>==</span> <span class='hs-varid'>endCode</span> <span class='hs-varop'>||</span>
<a name="line-115"></a> <span class='hs-conid'>T</span><span class='hs-varop'>.</span><span class='hs-varid'>singleton</span> <span class='hs-chr'>'%'</span> <span class='hs-varop'>==</span> <span class='hs-conid'>T</span><span class='hs-varop'>.</span><span class='hs-varid'>take</span> <span class='hs-num'>1</span> <span class='hs-layout'>(</span><span class='hs-conid'>T</span><span class='hs-varop'>.</span><span class='hs-varid'>stripStart</span> <span class='hs-layout'>(</span><span class='hs-varid'>string</span> <span class='hs-varid'>t</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyword'>do</span>
<a name="line-116"></a>
<a name="line-117"></a> <span class='hs-varid'>modify</span> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>s</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>s</span> <span class='hs-layout'>{</span> <span class='hs-varid'>tokens</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>ts</span> <span class='hs-layout'>}</span>
<a name="line-118"></a> <span class='hs-varid'>return</span> <span class='hs-varid'>t</span>
<a name="line-119"></a>
<a name="line-120"></a> <span class='hs-varid'>t</span> <span class='hs-conop'>:</span> <span class='hs-varid'>ts</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyword'>do</span>
<a name="line-121"></a> <span class='hs-varid'>modify</span> <span class='hs-varop'>$</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'>tokens</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>ts</span> <span class='hs-layout'>}</span>
<a name="line-122"></a>
<a name="line-123"></a> <span class='hs-varid'>inCode</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>gets</span> <span class='hs-varid'>inCode</span>
<a name="line-124"></a> <span class='hs-keyword'>let</span> <span class='hs-varid'>code</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>if</span> <span class='hs-varid'>inCode</span> <span class='hs-keyword'>then</span> <span class='hs-varid'>endCode</span> <span class='hs-keyword'>else</span> <span class='hs-varid'>beginCode</span>
<a name="line-125"></a>
<a name="line-126"></a> <span class='hs-keyword'>case</span> <span class='hs-varid'>code</span> <span class='hs-varop'>`isInfixOf'`</span> <span class='hs-varid'>string</span> <span class='hs-varid'>t</span> <span class='hs-keyword'>of</span>
<a name="line-127"></a> <span class='hs-conid'>Nothing</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyword'>do</span>
<a name="line-128"></a>
<a name="line-129"></a> <span class='hs-comment'>-- Spaces take care of their own column tracking.</span>
<a name="line-130"></a> <span class='hs-varid'>unless</span> <span class='hs-layout'>(</span><span class='hs-varid'>isSpaces</span> <span class='hs-layout'>(</span><span class='hs-varid'>string</span> <span class='hs-varid'>t</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <span class='hs-varop'>$</span> <span class='hs-keyword'>do</span>
<a name="line-131"></a> <span class='hs-varid'>moveColumn</span> <span class='hs-varop'>$</span> <span class='hs-conid'>T</span><span class='hs-varop'>.</span><span class='hs-varid'>length</span> <span class='hs-varop'>$</span> <span class='hs-varid'>string</span> <span class='hs-varid'>t</span>
<a name="line-132"></a>
<a name="line-133"></a> <span class='hs-varid'>return</span> <span class='hs-varid'>t</span>
<a name="line-134"></a>
<a name="line-135"></a> <span class='hs-conid'>Just</span> <span class='hs-layout'>(</span><span class='hs-varid'>pre</span><span class='hs-layout'>,</span> <span class='hs-varid'>suf</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyword'>do</span>
<a name="line-136"></a> <span class='hs-keyword'>let</span> <span class='hs-varid'>t'</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>t</span> <span class='hs-layout'>{</span> <span class='hs-varid'>string</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>code</span> <span class='hs-layout'>}</span>
<a name="line-137"></a> <span class='hs-keyword'>let</span> <span class='hs-varid'>t''</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>t</span> <span class='hs-layout'>{</span> <span class='hs-varid'>string</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>suf</span> <span class='hs-layout'>}</span>
<a name="line-138"></a> <span class='hs-varid'>modify</span> <span class='hs-varop'>$</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'>tokens</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>t'</span> <span class='hs-conop'>:</span> <span class='hs-varid'>t''</span> <span class='hs-conop'>:</span> <span class='hs-varid'>tokens</span> <span class='hs-varid'>s</span> <span class='hs-layout'>}</span>
<a name="line-139"></a>
<a name="line-140"></a> <span class='hs-varid'>unless</span> <span class='hs-layout'>(</span><span class='hs-varid'>isSpaces</span> <span class='hs-varid'>pre</span><span class='hs-layout'>)</span> <span class='hs-varop'>$</span> <span class='hs-keyword'>do</span>
<a name="line-141"></a> <span class='hs-varid'>moveColumn</span> <span class='hs-varop'>$</span> <span class='hs-conid'>T</span><span class='hs-varop'>.</span><span class='hs-varid'>length</span> <span class='hs-varid'>pre</span>
<a name="line-142"></a>
<a name="line-143"></a> <span class='hs-varid'>return</span> <span class='hs-varop'>$</span> <span class='hs-varid'>t</span> <span class='hs-layout'>{</span> <span class='hs-varid'>string</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>pre</span> <span class='hs-layout'>}</span>
<a name="line-144"></a>
<a name="line-145"></a><a name="nextToken"></a><span class='hs-definition'>nextToken</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>LaTeX</span> <span class='hs-conid'>Text</span>
<a name="line-146"></a><span class='hs-definition'>nextToken</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>string</span> <span class='hs-varop'>`fmap`</span> <span class='hs-varid'>nextToken'</span>
<a name="line-147"></a>
<a name="line-148"></a><a name="resetColumn"></a><span class='hs-definition'>resetColumn</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>LaTeX</span> <span class='hs-conid'>()</span>
<a name="line-149"></a><span class='hs-definition'>resetColumn</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>modify</span> <span class='hs-varop'>$</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'>column</span> <span class='hs-keyglyph'>=</span> <span class='hs-num'>0</span> <span class='hs-layout'>}</span>
<a name="line-150"></a>
<a name="line-151"></a><a name="moveColumn"></a><span class='hs-definition'>moveColumn</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Int</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>LaTeX</span> <span class='hs-conid'>()</span>
<a name="line-152"></a><span class='hs-definition'>moveColumn</span> <span class='hs-varid'>i</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>modify</span> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>s</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>s</span> <span class='hs-layout'>{</span> <span class='hs-varid'>column</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>i</span> <span class='hs-varop'>+</span> <span class='hs-varid'>column</span> <span class='hs-varid'>s</span> <span class='hs-layout'>}</span>
<a name="line-153"></a>
<a name="line-154"></a><a name="moveIndent"></a><span class='hs-definition'>moveIndent</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Int</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>LaTeX</span> <span class='hs-conid'>()</span>
<a name="line-155"></a><span class='hs-definition'>moveIndent</span> <span class='hs-varid'>i</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>modify</span> <span class='hs-varop'>$</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'>indent</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>i</span> <span class='hs-varop'>+</span> <span class='hs-varid'>indent</span> <span class='hs-varid'>s</span> <span class='hs-layout'>}</span>
<a name="line-156"></a>
<a name="line-157"></a><a name="resetIndent"></a><span class='hs-definition'>resetIndent</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>LaTeX</span> <span class='hs-conid'>()</span>
<a name="line-158"></a><span class='hs-definition'>resetIndent</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>modify</span> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>s</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>s</span> <span class='hs-layout'>{</span> <span class='hs-varid'>indent</span> <span class='hs-keyglyph'>=</span> <span class='hs-num'>0</span> <span class='hs-layout'>}</span>
<a name="line-159"></a>
<a name="line-160"></a><a name="setIndentPrev"></a><span class='hs-definition'>setIndentPrev</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Int</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>LaTeX</span> <span class='hs-conid'>()</span>
<a name="line-161"></a><span class='hs-definition'>setIndentPrev</span> <span class='hs-varid'>i</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>modify</span> <span class='hs-varop'>$</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'>indentPrev</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>i</span> <span class='hs-layout'>}</span>
<a name="line-162"></a>
<a name="line-163"></a><a name="resetIndentPrev"></a><span class='hs-definition'>resetIndentPrev</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>LaTeX</span> <span class='hs-conid'>()</span>
<a name="line-164"></a><span class='hs-definition'>resetIndentPrev</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>modify</span> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>s</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>s</span> <span class='hs-layout'>{</span> <span class='hs-varid'>indentPrev</span> <span class='hs-keyglyph'>=</span> <span class='hs-num'>0</span> <span class='hs-layout'>}</span>
<a name="line-165"></a>
<a name="line-166"></a><a name="setInCode"></a><span class='hs-definition'>setInCode</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>LaTeX</span> <span class='hs-conid'>()</span>
<a name="line-167"></a><span class='hs-definition'>setInCode</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>modify</span> <span class='hs-varop'>$</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'>inCode</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>True</span> <span class='hs-layout'>}</span>
<a name="line-168"></a>
<a name="line-169"></a><a name="unsetInCode"></a><span class='hs-definition'>unsetInCode</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>LaTeX</span> <span class='hs-conid'>()</span>
<a name="line-170"></a><span class='hs-definition'>unsetInCode</span> <span class='hs-keyglyph'>=</span> <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'>inCode</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>False</span> <span class='hs-layout'>}</span>
<a name="line-171"></a>
<a name="line-172"></a><span class='hs-comment'>------------------------------------------------------------------------</span>
<a name="line-173"></a><span class='hs-comment'>-- * LaTeX and polytable strings.</span>
<a name="line-174"></a>
<a name="line-175"></a><span class='hs-comment'>-- Polytable, <a href="http://www.ctan.org/pkg/polytable,">http://www.ctan.org/pkg/polytable,</a> is used for code</span>
<a name="line-176"></a><span class='hs-comment'>-- alignment, similar to lhs2TeX's approach.</span>
<a name="line-177"></a>
<a name="line-178"></a><a name="nl"></a><span class='hs-definition'>nl</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>T</span><span class='hs-varop'>.</span><span class='hs-varid'>pack</span> <span class='hs-str'>"%\n"</span>
<a name="line-179"></a><a name="beginCode"></a><span class='hs-definition'>beginCode</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>T</span><span class='hs-varop'>.</span><span class='hs-varid'>pack</span> <span class='hs-str'>"\\begin{code}"</span>
<a name="line-180"></a><a name="endCode"></a><span class='hs-definition'>endCode</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>T</span><span class='hs-varop'>.</span><span class='hs-varid'>pack</span> <span class='hs-str'>"\\end{code}"</span>
<a name="line-181"></a>
<a name="line-182"></a><a name="ptOpen"></a><span class='hs-definition'>ptOpen</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>T</span><span class='hs-varop'>.</span><span class='hs-varid'>pack</span> <span class='hs-str'>"\\>"</span>
<a name="line-183"></a><a name="ptOpen'"></a><span class='hs-definition'>ptOpen'</span> <span class='hs-varid'>i</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>ptOpen</span> <span class='hs-varop'><+></span> <span class='hs-conid'>T</span><span class='hs-varop'>.</span><span class='hs-varid'>pack</span> <span class='hs-layout'>(</span><span class='hs-str'>"["</span> <span class='hs-varop'>++</span> <span class='hs-varid'>show</span> <span class='hs-varid'>i</span> <span class='hs-varop'>++</span> <span class='hs-str'>"]"</span><span class='hs-layout'>)</span>
<a name="line-184"></a><a name="ptClose"></a><span class='hs-definition'>ptClose</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>T</span><span class='hs-varop'>.</span><span class='hs-varid'>pack</span> <span class='hs-str'>"\\<"</span>
<a name="line-185"></a><a name="ptClose'"></a><span class='hs-definition'>ptClose'</span> <span class='hs-varid'>i</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>ptClose</span> <span class='hs-varop'><+></span> <span class='hs-conid'>T</span><span class='hs-varop'>.</span><span class='hs-varid'>pack</span> <span class='hs-layout'>(</span><span class='hs-str'>"["</span> <span class='hs-varop'>++</span> <span class='hs-varid'>show</span> <span class='hs-varid'>i</span> <span class='hs-varop'>++</span> <span class='hs-str'>"]"</span><span class='hs-layout'>)</span>
<a name="line-186"></a><a name="ptNL"></a><span class='hs-definition'>ptNL</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>nl</span> <span class='hs-varop'><+></span> <span class='hs-conid'>T</span><span class='hs-varop'>.</span><span class='hs-varid'>pack</span> <span class='hs-str'>"\\\\\n"</span>
<a name="line-187"></a>
<a name="line-188"></a><a name="cmdPrefix"></a><span class='hs-definition'>cmdPrefix</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>T</span><span class='hs-varop'>.</span><span class='hs-varid'>pack</span> <span class='hs-str'>"\\Agda"</span>
<a name="line-189"></a><a name="cmdArg"></a><span class='hs-definition'>cmdArg</span> <span class='hs-varid'>x</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>T</span><span class='hs-varop'>.</span><span class='hs-varid'>singleton</span> <span class='hs-chr'>'{'</span> <span class='hs-varop'><+></span> <span class='hs-varid'>x</span> <span class='hs-varop'><+></span> <span class='hs-conid'>T</span><span class='hs-varop'>.</span><span class='hs-varid'>singleton</span> <span class='hs-chr'>'}'</span>
<a name="line-190"></a><a name="cmdIndent"></a><span class='hs-definition'>cmdIndent</span> <span class='hs-varid'>i</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>cmdPrefix</span> <span class='hs-varop'><+></span> <span class='hs-conid'>T</span><span class='hs-varop'>.</span><span class='hs-varid'>pack</span> <span class='hs-str'>"Indent"</span> <span class='hs-varop'><+></span>
<a name="line-191"></a> <span class='hs-varid'>cmdArg</span> <span class='hs-layout'>(</span><span class='hs-conid'>T</span><span class='hs-varop'>.</span><span class='hs-varid'>pack</span> <span class='hs-layout'>(</span><span class='hs-varid'>show</span> <span class='hs-varid'>i</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <span class='hs-varop'><+></span> <span class='hs-varid'>cmdArg</span> <span class='hs-conid'>T</span><span class='hs-varop'>.</span><span class='hs-varid'>empty</span>
<a name="line-192"></a>
<a name="line-193"></a><a name="infixl'"></a><span class='hs-definition'>infixl'</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>T</span><span class='hs-varop'>.</span><span class='hs-varid'>pack</span> <span class='hs-str'>"infixl"</span>
<a name="line-194"></a><a name="infix'"></a><span class='hs-definition'>infix'</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>T</span><span class='hs-varop'>.</span><span class='hs-varid'>pack</span> <span class='hs-str'>"infix"</span>
<a name="line-195"></a><a name="infixr'"></a><span class='hs-definition'>infixr'</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>T</span><span class='hs-varop'>.</span><span class='hs-varid'>pack</span> <span class='hs-str'>"infixr"</span>
<a name="line-196"></a>
<a name="line-197"></a><span class='hs-comment'>------------------------------------------------------------------------</span>
<a name="line-198"></a><span class='hs-comment'>-- * Automaton.</span>
<a name="line-199"></a>
<a name="line-200"></a><a name="nonCode"></a><span class='hs-comment'>-- | The start state, @nonCode@, prints non-code (the LaTeX part of</span>
<a name="line-201"></a><span class='hs-comment'>-- literate Agda) until it sees a @beginBlock@.</span>
<a name="line-202"></a><span class='hs-definition'>nonCode</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>LaTeX</span> <span class='hs-conid'>()</span>
<a name="line-203"></a><span class='hs-definition'>nonCode</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span>
<a name="line-204"></a> <span class='hs-varid'>tok</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>nextToken</span>
<a name="line-205"></a>
<a name="line-206"></a> <span class='hs-keyword'>if</span> <span class='hs-varid'>tok</span> <span class='hs-varop'>==</span> <span class='hs-varid'>beginCode</span>
<a name="line-207"></a>
<a name="line-208"></a> <span class='hs-keyword'>then</span> <span class='hs-keyword'>do</span>
<a name="line-209"></a> <span class='hs-varid'>tell</span> <span class='hs-varid'>tok</span>
<a name="line-210"></a> <span class='hs-varid'>resetColumn</span>
<a name="line-211"></a> <span class='hs-varid'>setInCode</span>
<a name="line-212"></a> <span class='hs-varid'>code</span>
<a name="line-213"></a>
<a name="line-214"></a> <span class='hs-keyword'>else</span> <span class='hs-keyword'>do</span>
<a name="line-215"></a> <span class='hs-varid'>tell</span> <span class='hs-varid'>tok</span>
<a name="line-216"></a> <span class='hs-varid'>nonCode</span>
<a name="line-217"></a>
<a name="line-218"></a><a name="code"></a><span class='hs-comment'>-- | Deals with code blocks. Every token, except spaces, is pretty</span>
<a name="line-219"></a><span class='hs-comment'>-- printed as a LaTeX command.</span>
<a name="line-220"></a><span class='hs-definition'>code</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>LaTeX</span> <span class='hs-conid'>()</span>
<a name="line-221"></a><span class='hs-definition'>code</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span>
<a name="line-222"></a>
<a name="line-223"></a> <span class='hs-varid'>col</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>gets</span> <span class='hs-varid'>column</span>
<a name="line-224"></a> <span class='hs-varid'>when</span> <span class='hs-layout'>(</span><span class='hs-varid'>col</span> <span class='hs-varop'>==</span> <span class='hs-num'>0</span><span class='hs-layout'>)</span> <span class='hs-varop'>$</span> <span class='hs-keyword'>do</span>
<a name="line-225"></a> <span class='hs-varid'>tell</span> <span class='hs-varid'>ptOpen</span>
<a name="line-226"></a>
<a name="line-227"></a> <span class='hs-varid'>tok'</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>nextToken'</span>
<a name="line-228"></a> <span class='hs-keyword'>let</span> <span class='hs-varid'>tok</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>string</span> <span class='hs-varid'>tok'</span>
<a name="line-229"></a>
<a name="line-230"></a> <span class='hs-varid'>when</span> <span class='hs-layout'>(</span><span class='hs-varid'>tok</span> <span class='hs-varop'>==</span> <span class='hs-varid'>endCode</span><span class='hs-layout'>)</span> <span class='hs-varop'>$</span> <span class='hs-keyword'>do</span>
<a name="line-231"></a> <span class='hs-varid'>tell</span> <span class='hs-varop'>$</span> <span class='hs-varid'>ptClose</span> <span class='hs-varop'><+></span> <span class='hs-varid'>tok</span>
<a name="line-232"></a> <span class='hs-varid'>unsetInCode</span>
<a name="line-233"></a> <span class='hs-varid'>nonCode</span>
<a name="line-234"></a>
<a name="line-235"></a> <span class='hs-varid'>when</span> <span class='hs-layout'>(</span><span class='hs-varid'>tok</span> <span class='hs-varop'>`elem`</span> <span class='hs-keyglyph'>[</span> <span class='hs-varid'>infixl'</span><span class='hs-layout'>,</span> <span class='hs-varid'>infix'</span><span class='hs-layout'>,</span> <span class='hs-varid'>infixr'</span> <span class='hs-keyglyph'>]</span><span class='hs-layout'>)</span> <span class='hs-varop'>$</span> <span class='hs-keyword'>do</span>
<a name="line-236"></a> <span class='hs-varid'>tell</span> <span class='hs-varop'>$</span> <span class='hs-varid'>cmdPrefix</span> <span class='hs-varop'><+></span> <span class='hs-conid'>T</span><span class='hs-varop'>.</span><span class='hs-varid'>pack</span> <span class='hs-str'>"Keyword"</span> <span class='hs-varop'><+></span> <span class='hs-varid'>cmdArg</span> <span class='hs-varid'>tok</span>
<a name="line-237"></a> <span class='hs-varid'>fixity</span>
<a name="line-238"></a> <span class='hs-varid'>code</span>
<a name="line-239"></a>
<a name="line-240"></a> <span class='hs-varid'>when</span> <span class='hs-layout'>(</span><span class='hs-varid'>isSpaces</span> <span class='hs-varid'>tok</span><span class='hs-layout'>)</span> <span class='hs-varop'>$</span> <span class='hs-keyword'>do</span>
<a name="line-241"></a> <span class='hs-varid'>spaces</span> <span class='hs-varop'>$</span> <span class='hs-conid'>T</span><span class='hs-varop'>.</span><span class='hs-varid'>group</span> <span class='hs-varid'>tok</span>
<a name="line-242"></a> <span class='hs-varid'>code</span>
<a name="line-243"></a>
<a name="line-244"></a> <span class='hs-keyword'>case</span> <span class='hs-varid'>aspect</span> <span class='hs-layout'>(</span><span class='hs-varid'>info</span> <span class='hs-varid'>tok'</span><span class='hs-layout'>)</span> <span class='hs-keyword'>of</span>
<a name="line-245"></a> <span class='hs-conid'>Nothing</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>tell</span> <span class='hs-varop'>$</span> <span class='hs-varid'>escape</span> <span class='hs-varid'>tok</span>
<a name="line-246"></a> <span class='hs-conid'>Just</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>tell</span> <span class='hs-varop'>$</span> <span class='hs-varid'>cmdPrefix</span> <span class='hs-varop'><+></span> <span class='hs-conid'>T</span><span class='hs-varop'>.</span><span class='hs-varid'>pack</span> <span class='hs-layout'>(</span><span class='hs-varid'>cmd</span> <span class='hs-varid'>a</span><span class='hs-layout'>)</span> <span class='hs-varop'><+></span> <span class='hs-varid'>cmdArg</span> <span class='hs-layout'>(</span><span class='hs-varid'>escape</span> <span class='hs-varid'>tok</span><span class='hs-layout'>)</span>
<a name="line-247"></a> <span class='hs-varid'>code</span>
<a name="line-248"></a>
<a name="line-249"></a> <span class='hs-keyword'>where</span>
<a name="line-250"></a> <span class='hs-varid'>cmd</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Aspect</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>String</span>
<a name="line-251"></a> <span class='hs-varid'>cmd</span> <span class='hs-layout'>(</span><span class='hs-conid'>Name</span> <span class='hs-varid'>mKind</span> <span class='hs-keyword'>_</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>maybe</span> <span class='hs-sel'>__IMPOSSIBLE__</span> <span class='hs-varid'>showKind</span> <span class='hs-varid'>mKind</span>
<a name="line-252"></a> <span class='hs-keyword'>where</span>
<a name="line-253"></a> <span class='hs-varid'>showKind</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>NameKind</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>String</span>
<a name="line-254"></a> <span class='hs-varid'>showKind</span> <span class='hs-layout'>(</span><span class='hs-conid'>Constructor</span> <span class='hs-conid'>Inductive</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-str'>"InductiveConstructor"</span>
<a name="line-255"></a> <span class='hs-varid'>showKind</span> <span class='hs-layout'>(</span><span class='hs-conid'>Constructor</span> <span class='hs-conid'>CoInductive</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-str'>"CoinductiveConstructor"</span>
<a name="line-256"></a> <span class='hs-varid'>showKind</span> <span class='hs-varid'>k</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>show</span> <span class='hs-varid'>k</span>
<a name="line-257"></a> <span class='hs-varid'>cmd</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>show</span> <span class='hs-varid'>a</span>
<a name="line-258"></a>
<a name="line-259"></a><a name="escape"></a><span class='hs-comment'>-- Escapes special characters.</span>
<a name="line-260"></a><span class='hs-definition'>escape</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Text</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Text</span>
<a name="line-261"></a><span class='hs-definition'>escape</span> <span class='hs-layout'>(</span><span class='hs-conid'>T</span><span class='hs-varop'>.</span><span class='hs-varid'>uncons</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Nothing</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>T</span><span class='hs-varop'>.</span><span class='hs-varid'>empty</span>
<a name="line-262"></a><span class='hs-definition'>escape</span> <span class='hs-layout'>(</span><span class='hs-conid'>T</span><span class='hs-varop'>.</span><span class='hs-varid'>uncons</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Just</span> <span class='hs-layout'>(</span><span class='hs-varid'>c</span><span class='hs-layout'>,</span> <span class='hs-varid'>s</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>T</span><span class='hs-varop'>.</span><span class='hs-varid'>pack</span> <span class='hs-layout'>(</span><span class='hs-varid'>replace</span> <span class='hs-varid'>c</span><span class='hs-layout'>)</span> <span class='hs-varop'><+></span> <span class='hs-varid'>escape</span> <span class='hs-varid'>s</span>
<a name="line-263"></a> <span class='hs-keyword'>where</span>
<a name="line-264"></a> <span class='hs-varid'>replace</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Char</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>String</span>
<a name="line-265"></a> <span class='hs-varid'>replace</span> <span class='hs-varid'>c</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>case</span> <span class='hs-varid'>c</span> <span class='hs-keyword'>of</span>
<a name="line-266"></a> <span class='hs-chr'>'_'</span> <span class='hs-keyglyph'>-></span> <span class='hs-str'>"\\_"</span>
<a name="line-267"></a> <span class='hs-chr'>'{'</span> <span class='hs-keyglyph'>-></span> <span class='hs-str'>"\\{"</span>
<a name="line-268"></a> <span class='hs-chr'>'}'</span> <span class='hs-keyglyph'>-></span> <span class='hs-str'>"\\}"</span>
<a name="line-269"></a> <span class='hs-chr'>'#'</span> <span class='hs-keyglyph'>-></span> <span class='hs-str'>"\\#"</span>
<a name="line-270"></a> <span class='hs-chr'>'$'</span> <span class='hs-keyglyph'>-></span> <span class='hs-str'>"\\$"</span>
<a name="line-271"></a> <span class='hs-chr'>'&'</span> <span class='hs-keyglyph'>-></span> <span class='hs-str'>"\\&"</span>
<a name="line-272"></a> <span class='hs-chr'>'%'</span> <span class='hs-keyglyph'>-></span> <span class='hs-str'>"\\%"</span>
<a name="line-273"></a> <span class='hs-chr'>'~'</span> <span class='hs-keyglyph'>-></span> <span class='hs-str'>"\textasciitilde"</span>
<a name="line-274"></a> <span class='hs-chr'>'^'</span> <span class='hs-keyglyph'>-></span> <span class='hs-str'>"\textasciicircum"</span>
<a name="line-275"></a> <span class='hs-chr'>'\\'</span> <span class='hs-keyglyph'>-></span> <span class='hs-str'>"\textbackslash"</span>
<a name="line-276"></a> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyglyph'>[</span> <span class='hs-varid'>c</span> <span class='hs-keyglyph'>]</span>
<a name="line-277"></a><span class='hs-definition'>escape</span> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'>=</span> <span class='hs-sel'>__IMPOSSIBLE__</span>
<a name="line-278"></a>
<a name="line-279"></a><a name="fixity"></a><span class='hs-comment'>-- | Fixity declarations need a special treatment. The operations in</span>
<a name="line-280"></a><span class='hs-comment'>-- declarations like:</span>
<a name="line-281"></a><span class='hs-comment'>--</span>
<a name="line-282"></a><span class='hs-comment'>-- infix num op1 op2 op3</span>
<a name="line-283"></a><span class='hs-comment'>--</span>
<a name="line-284"></a><span class='hs-comment'>-- are treated as comments and thus grouped together with the newlines</span>
<a name="line-285"></a><span class='hs-comment'>-- that follow, which results incorrect LaTeX output -- the following</span>
<a name="line-286"></a><span class='hs-comment'>-- state remedies the problem by breaking on newlines.</span>
<a name="line-287"></a><span class='hs-definition'>fixity</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>LaTeX</span> <span class='hs-conid'>()</span>
<a name="line-288"></a><span class='hs-definition'>fixity</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span>
<a name="line-289"></a> <span class='hs-varid'>tok</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>nextToken</span>
<a name="line-290"></a>
<a name="line-291"></a> <span class='hs-keyword'>case</span> <span class='hs-conid'>T</span><span class='hs-varop'>.</span><span class='hs-varid'>breakOn</span> <span class='hs-layout'>(</span><span class='hs-conid'>T</span><span class='hs-varop'>.</span><span class='hs-varid'>pack</span> <span class='hs-str'>"\n"</span><span class='hs-layout'>)</span> <span class='hs-varid'>tok</span> <span class='hs-keyword'>of</span>
<a name="line-292"></a>
<a name="line-293"></a> <span class='hs-comment'>-- Spaces.</span>
<a name="line-294"></a> <span class='hs-layout'>(</span><span class='hs-varid'>sps</span><span class='hs-layout'>,</span> <span class='hs-varid'>nls</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>nls</span> <span class='hs-varop'>==</span> <span class='hs-conid'>T</span><span class='hs-varop'>.</span><span class='hs-varid'>empty</span> <span class='hs-varop'>&&</span> <span class='hs-varid'>isSpaces</span> <span class='hs-varid'>sps</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyword'>do</span>
<a name="line-295"></a> <span class='hs-varid'>spaces</span> <span class='hs-varop'>$</span> <span class='hs-conid'>T</span><span class='hs-varop'>.</span><span class='hs-varid'>group</span> <span class='hs-varid'>sps</span>
<a name="line-296"></a> <span class='hs-varid'>fixity</span>
<a name="line-297"></a>
<a name="line-298"></a> <span class='hs-comment'>-- Fixity level.</span>
<a name="line-299"></a> <span class='hs-layout'>(</span><span class='hs-varid'>num</span><span class='hs-layout'>,</span> <span class='hs-varid'>nls</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>nls</span> <span class='hs-varop'>==</span> <span class='hs-conid'>T</span><span class='hs-varop'>.</span><span class='hs-varid'>empty</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyword'>do</span>
<a name="line-300"></a> <span class='hs-varid'>tell</span> <span class='hs-varop'>$</span> <span class='hs-varid'>cmdPrefix</span> <span class='hs-varop'><+></span> <span class='hs-conid'>T</span><span class='hs-varop'>.</span><span class='hs-varid'>pack</span> <span class='hs-str'>"Number"</span> <span class='hs-varop'><+></span> <span class='hs-varid'>cmdArg</span> <span class='hs-varid'>num</span>
<a name="line-301"></a> <span class='hs-varid'>fixity</span>
<a name="line-302"></a>
<a name="line-303"></a> <span class='hs-comment'>-- Operations followed by newlines.</span>
<a name="line-304"></a> <span class='hs-layout'>(</span><span class='hs-varid'>ops</span><span class='hs-layout'>,</span> <span class='hs-varid'>nls</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>otherwise</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyword'>do</span>
<a name="line-305"></a> <span class='hs-varid'>tell</span> <span class='hs-varop'>$</span> <span class='hs-varid'>escape</span> <span class='hs-varid'>ops</span>
<a name="line-306"></a> <span class='hs-varid'>spaces</span> <span class='hs-layout'>(</span><span class='hs-conid'>T</span><span class='hs-varop'>.</span><span class='hs-varid'>group</span> <span class='hs-varid'>nls</span><span class='hs-layout'>)</span>
<a name="line-307"></a>
<a name="line-308"></a>
<a name="line-309"></a><a name="spaces"></a><span class='hs-comment'>-- | Spaces are grouped before processed, because multiple consecutive</span>
<a name="line-310"></a><span class='hs-comment'>-- spaces determine the alignment of the code and consecutive newline</span>
<a name="line-311"></a><span class='hs-comment'>-- characters need special treatment as well.</span>
<a name="line-312"></a><span class='hs-definition'>spaces</span> <span class='hs-keyglyph'>::</span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>Text</span><span class='hs-keyglyph'>]</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>LaTeX</span> <span class='hs-conid'>()</span>
<a name="line-313"></a><span class='hs-definition'>spaces</span> <span class='hs-conid'>[]</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>return</span> <span class='hs-conid'>()</span>
<a name="line-314"></a><span class='hs-definition'>spaces</span> <span class='hs-layout'>(</span><span class='hs-layout'>(</span><span class='hs-conid'>T</span><span class='hs-varop'>.</span><span class='hs-varid'>uncons</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Nothing</span><span class='hs-layout'>)</span> <span class='hs-conop'>:</span> <span class='hs-varid'>ss</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-sel'>__IMPOSSIBLE__</span>
<a name="line-315"></a>
<a name="line-316"></a><span class='hs-comment'>-- Single spaces are ignored.</span>
<a name="line-317"></a><span class='hs-definition'>spaces</span> <span class='hs-layout'>(</span><span class='hs-layout'>(</span><span class='hs-conid'>T</span><span class='hs-varop'>.</span><span class='hs-varid'>uncons</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Just</span> <span class='hs-layout'>(</span><span class='hs-chr'>' '</span><span class='hs-layout'>,</span> <span class='hs-varid'>s</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <span class='hs-conop'>:</span> <span class='hs-conid'>[]</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>T</span><span class='hs-varop'>.</span><span class='hs-varid'>null</span> <span class='hs-varid'>s</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span>
<a name="line-318"></a> <span class='hs-varid'>moveColumn</span> <span class='hs-num'>1</span>
<a name="line-319"></a> <span class='hs-varid'>tell</span> <span class='hs-varop'>$</span> <span class='hs-conid'>T</span><span class='hs-varop'>.</span><span class='hs-varid'>singleton</span> <span class='hs-chr'>' '</span>
<a name="line-320"></a>
<a name="line-321"></a><span class='hs-comment'>-- Multiple spaces.</span>
<a name="line-322"></a><span class='hs-definition'>spaces</span> <span class='hs-layout'>(</span><span class='hs-varid'>s</span><span class='hs-keyglyph'>@</span><span class='hs-layout'>(</span><span class='hs-conid'>T</span><span class='hs-varop'>.</span><span class='hs-varid'>uncons</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Just</span> <span class='hs-layout'>(</span><span class='hs-chr'>' '</span><span class='hs-layout'>,</span> <span class='hs-keyword'>_</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <span class='hs-conop'>:</span> <span class='hs-varid'>ss</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span>
<a name="line-323"></a> <span class='hs-keyword'>let</span> <span class='hs-varid'>len</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>T</span><span class='hs-varop'>.</span><span class='hs-varid'>length</span> <span class='hs-varid'>s</span>
<a name="line-324"></a>
<a name="line-325"></a> <span class='hs-varid'>col</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>gets</span> <span class='hs-varid'>column</span>
<a name="line-326"></a> <span class='hs-varid'>moveColumn</span> <span class='hs-varid'>len</span>
<a name="line-327"></a>
<a name="line-328"></a> <span class='hs-keyword'>if</span> <span class='hs-varid'>col</span> <span class='hs-varop'>==</span> <span class='hs-num'>0</span>
<a name="line-329"></a> <span class='hs-keyword'>then</span> <span class='hs-keyword'>do</span>
<a name="line-330"></a>
<a name="line-331"></a> <span class='hs-comment'>-- FIX: What's going on here?</span>
<a name="line-332"></a> <span class='hs-varid'>ind</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>gets</span> <span class='hs-varid'>indent</span>
<a name="line-333"></a> <span class='hs-varid'>indPrev</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>gets</span> <span class='hs-varid'>indentPrev</span>
<a name="line-334"></a>
<a name="line-335"></a> <span class='hs-keyword'>if</span> <span class='hs-varid'>ind</span> <span class='hs-varop'>==</span> <span class='hs-varid'>len</span>
<a name="line-336"></a> <span class='hs-keyword'>then</span> <span class='hs-keyword'>do</span>
<a name="line-337"></a> <span class='hs-varid'>tell</span> <span class='hs-varop'>$</span> <span class='hs-varid'>ptOpen'</span> <span class='hs-varid'>indPrev</span>
<a name="line-338"></a> <span class='hs-keyword'>else</span> <span class='hs-keyword'>do</span>
<a name="line-339"></a> <span class='hs-keyword'>if</span> <span class='hs-varid'>len</span> <span class='hs-varop'><</span> <span class='hs-varid'>ind</span>
<a name="line-340"></a> <span class='hs-keyword'>then</span> <span class='hs-keyword'>do</span>
<a name="line-341"></a> <span class='hs-varid'>resetIndent</span>
<a name="line-342"></a> <span class='hs-varid'>resetIndentPrev</span>
<a name="line-343"></a> <span class='hs-varid'>tell</span> <span class='hs-varop'>$</span> <span class='hs-varid'>ptOpen'</span> <span class='hs-varop'>$</span> <span class='hs-keyword'>if</span> <span class='hs-varid'>indPrev</span> <span class='hs-varop'>==</span> <span class='hs-num'>0</span> <span class='hs-varop'>||</span>
<a name="line-344"></a> <span class='hs-varid'>len</span> <span class='hs-varop'>==</span> <span class='hs-varid'>indPrev</span>
<a name="line-345"></a> <span class='hs-keyword'>then</span> <span class='hs-num'>0</span>
<a name="line-346"></a> <span class='hs-keyword'>else</span> <span class='hs-varid'>ind</span> <span class='hs-comment'>-</span> <span class='hs-varid'>indPrev</span> <span class='hs-comment'>-</span> <span class='hs-varid'>len</span>
<a name="line-347"></a> <span class='hs-keyword'>else</span> <span class='hs-keyword'>do</span>
<a name="line-348"></a> <span class='hs-varid'>moveIndent</span> <span class='hs-varop'>$</span> <span class='hs-varid'>len</span> <span class='hs-comment'>-</span> <span class='hs-varid'>ind</span>
<a name="line-349"></a> <span class='hs-varid'>setIndentPrev</span> <span class='hs-varid'>ind</span>
<a name="line-350"></a> <span class='hs-varid'>tell</span> <span class='hs-varop'>$</span> <span class='hs-varid'>ptOpen'</span> <span class='hs-varid'>ind</span>
<a name="line-351"></a>
<a name="line-352"></a> <span class='hs-varid'>tell</span> <span class='hs-varop'>$</span> <span class='hs-varid'>cmdIndent</span> <span class='hs-varid'>len</span>
<a name="line-353"></a> <span class='hs-varid'>tell</span> <span class='hs-varop'>$</span> <span class='hs-varid'>ptClose'</span> <span class='hs-varid'>len</span> <span class='hs-varop'><+></span> <span class='hs-varid'>nl</span> <span class='hs-varop'><+></span> <span class='hs-varid'>ptOpen'</span> <span class='hs-varid'>len</span>
<a name="line-354"></a> <span class='hs-keyword'>else</span> <span class='hs-keyword'>do</span>
<a name="line-355"></a> <span class='hs-varid'>tell</span> <span class='hs-varop'>$</span> <span class='hs-conid'>T</span><span class='hs-varop'>.</span><span class='hs-varid'>singleton</span> <span class='hs-chr'>' '</span>
<a name="line-356"></a> <span class='hs-varid'>col</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>gets</span> <span class='hs-varid'>column</span>
<a name="line-357"></a> <span class='hs-varid'>tell</span> <span class='hs-varop'>$</span> <span class='hs-varid'>ptClose'</span> <span class='hs-varid'>col</span> <span class='hs-varop'><+></span> <span class='hs-varid'>nl</span> <span class='hs-varop'><+></span> <span class='hs-varid'>ptOpen'</span> <span class='hs-varid'>col</span>
<a name="line-358"></a>
<a name="line-359"></a> <span class='hs-varid'>spaces</span> <span class='hs-varid'>ss</span>
<a name="line-360"></a>
<a name="line-361"></a><span class='hs-comment'>-- Newlines.</span>
<a name="line-362"></a><span class='hs-definition'>spaces</span> <span class='hs-layout'>(</span><span class='hs-varid'>s</span><span class='hs-keyglyph'>@</span><span class='hs-layout'>(</span><span class='hs-conid'>T</span><span class='hs-varop'>.</span><span class='hs-varid'>uncons</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Just</span> <span class='hs-layout'>(</span><span class='hs-chr'>'\n'</span><span class='hs-layout'>,</span> <span class='hs-keyword'>_</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <span class='hs-conop'>:</span> <span class='hs-varid'>ss</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span>
<a name="line-363"></a> <span class='hs-varid'>resetColumn</span>
<a name="line-364"></a> <span class='hs-varid'>tell</span> <span class='hs-varop'>$</span> <span class='hs-varid'>ptClose</span> <span class='hs-varop'><+></span> <span class='hs-conid'>T</span><span class='hs-varop'>.</span><span class='hs-varid'>replicate</span> <span class='hs-layout'>(</span><span class='hs-conid'>T</span><span class='hs-varop'>.</span><span class='hs-varid'>length</span> <span class='hs-varid'>s</span><span class='hs-layout'>)</span> <span class='hs-varid'>ptNL</span>
<a name="line-365"></a> <span class='hs-varid'>spaces</span> <span class='hs-varid'>ss</span>
<a name="line-366"></a>
<a name="line-367"></a><span class='hs-comment'>-- Treat tabs as if they were spaces.</span>
<a name="line-368"></a><span class='hs-definition'>spaces</span> <span class='hs-layout'>(</span><span class='hs-varid'>s</span><span class='hs-keyglyph'>@</span><span class='hs-layout'>(</span><span class='hs-conid'>T</span><span class='hs-varop'>.</span><span class='hs-varid'>uncons</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Just</span> <span class='hs-layout'>(</span><span class='hs-chr'>'\t'</span><span class='hs-layout'>,</span> <span class='hs-keyword'>_</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <span class='hs-conop'>:</span> <span class='hs-varid'>ss</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span>
<a name="line-369"></a> <span class='hs-varid'>spaces</span> <span class='hs-varop'>$</span> <span class='hs-conid'>T</span><span class='hs-varop'>.</span><span class='hs-varid'>replicate</span> <span class='hs-layout'>(</span><span class='hs-conid'>T</span><span class='hs-varop'>.</span><span class='hs-varid'>length</span> <span class='hs-varid'>s</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-conid'>T</span><span class='hs-varop'>.</span><span class='hs-varid'>singleton</span> <span class='hs-chr'>' '</span><span class='hs-layout'>)</span> <span class='hs-conop'>:</span> <span class='hs-varid'>ss</span>
<a name="line-370"></a><span class='hs-definition'>spaces</span> <span class='hs-layout'>(</span><span class='hs-keyword'>_</span> <span class='hs-conop'>:</span> <span class='hs-varid'>ss</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-sel'>__IMPOSSIBLE__</span>
<a name="line-371"></a>
<a name="line-372"></a><span class='hs-comment'>------------------------------------------------------------------------</span>
<a name="line-373"></a><span class='hs-comment'>-- * Main.</span>
<a name="line-374"></a>
<a name="line-375"></a><a name="defaultStyFile"></a><span class='hs-definition'>defaultStyFile</span> <span class='hs-keyglyph'>=</span> <span class='hs-str'>"agda.sty"</span>
<a name="line-376"></a>
<a name="line-377"></a><a name="generateLaTeX"></a><span class='hs-comment'>-- | The only exported function. It's (only) called in @Main.hs@.</span>
<a name="line-378"></a><span class='hs-definition'>generateLaTeX</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>A</span><span class='hs-varop'>.</span><span class='hs-conid'>ModuleName</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>HighlightingInfo</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>TCM</span> <span class='hs-conid'>()</span>
<a name="line-379"></a><span class='hs-definition'>generateLaTeX</span> <span class='hs-varid'>mod</span> <span class='hs-varid'>hi</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span>
<a name="line-380"></a>
<a name="line-381"></a> <span class='hs-varid'>options</span> <span class='hs-keyglyph'><-</span> <span class='hs-conid'>TCM</span><span class='hs-varop'>.</span><span class='hs-varid'>commandLineOptions</span>
<a name="line-382"></a>
<a name="line-383"></a> <span class='hs-comment'>-- There is a default directory given by 'defaultLaTeXDir'.</span>
<a name="line-384"></a> <span class='hs-keyword'>let</span> <span class='hs-varid'>dir</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>optLaTeXDir</span> <span class='hs-varid'>options</span>
<a name="line-385"></a> <span class='hs-varid'>liftIO</span> <span class='hs-varop'>$</span> <span class='hs-varid'>createDirectoryIfMissing</span> <span class='hs-conid'>True</span> <span class='hs-varid'>dir</span>
<a name="line-386"></a>
<a name="line-387"></a> <span class='hs-conid'>TCM</span><span class='hs-varop'>.</span><span class='hs-varid'>reportSLn</span> <span class='hs-str'>"latex"</span> <span class='hs-num'>1</span> <span class='hs-varop'>$</span> <span class='hs-varid'>unlines</span>
<a name="line-388"></a> <span class='hs-keyglyph'>[</span> <span class='hs-str'>""</span>
<a name="line-389"></a> <span class='hs-layout'>,</span> <span class='hs-str'>"Checking if "</span> <span class='hs-varop'>++</span> <span class='hs-varid'>defaultStyFile</span> <span class='hs-varop'>++</span> <span class='hs-str'>" is found by the LaTeX environment."</span>
<a name="line-390"></a> <span class='hs-keyglyph'>]</span>
<a name="line-391"></a>
<a name="line-392"></a> <span class='hs-varid'>merrors</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>callCompiler'</span> <span class='hs-str'>"kpsewhich"</span> <span class='hs-keyglyph'>[</span> <span class='hs-varid'>defaultStyFile</span> <span class='hs-keyglyph'>]</span>
<a name="line-393"></a>
<a name="line-394"></a> <span class='hs-varid'>when</span> <span class='hs-layout'>(</span><span class='hs-varid'>isJust</span> <span class='hs-varid'>merrors</span><span class='hs-layout'>)</span> <span class='hs-varop'>$</span> <span class='hs-keyword'>do</span>
<a name="line-395"></a> <span class='hs-conid'>TCM</span><span class='hs-varop'>.</span><span class='hs-varid'>reportSLn</span> <span class='hs-str'>"latex"</span> <span class='hs-num'>1</span> <span class='hs-varop'>$</span> <span class='hs-varid'>unlines</span>
<a name="line-396"></a> <span class='hs-keyglyph'>[</span> <span class='hs-str'>""</span>
<a name="line-397"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>defaultStyFile</span> <span class='hs-varop'>++</span> <span class='hs-str'>" was not found. Copying a default version of "</span> <span class='hs-varop'>++</span>
<a name="line-398"></a> <span class='hs-varid'>defaultStyFile</span>
<a name="line-399"></a> <span class='hs-layout'>,</span> <span class='hs-str'>"into the working directory."</span>
<a name="line-400"></a> <span class='hs-keyglyph'>]</span>
<a name="line-401"></a>
<a name="line-402"></a> <span class='hs-varid'>liftIO</span> <span class='hs-varop'>$</span> <span class='hs-keyword'>do</span>
<a name="line-403"></a> <span class='hs-varid'>styFile</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>getDataFileName</span> <span class='hs-varid'>defaultStyFile</span>
<a name="line-404"></a> <span class='hs-varid'>liftIO</span> <span class='hs-varop'>$</span> <span class='hs-varid'>copyFile</span> <span class='hs-varid'>styFile</span> <span class='hs-varid'>defaultStyFile</span>
<a name="line-405"></a>
<a name="line-406"></a> <span class='hs-varid'>liftIO</span> <span class='hs-varop'>$</span> <span class='hs-keyword'>do</span>
<a name="line-407"></a> <span class='hs-varid'>source</span> <span class='hs-keyglyph'><-</span> <span class='hs-conid'>UTF8</span><span class='hs-varop'>.</span><span class='hs-varid'>readTextFile</span> <span class='hs-layout'>(</span><span class='hs-varid'>modToFile</span> <span class='hs-varid'>mod</span> <span class='hs-varop'><.></span> <span class='hs-str'>"lagda"</span><span class='hs-layout'>)</span>
<a name="line-408"></a> <span class='hs-keyword'>let</span> <span class='hs-varid'>latex</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>E</span><span class='hs-varop'>.</span><span class='hs-varid'>encodeUtf8</span> <span class='hs-varop'>$</span> <span class='hs-varid'>toLaTeX</span> <span class='hs-varid'>source</span> <span class='hs-varid'>hi</span>
<a name="line-409"></a> <span class='hs-conid'>BS</span><span class='hs-varop'>.</span><span class='hs-varid'>writeFile</span> <span class='hs-layout'>(</span><span class='hs-varid'>dir</span> <span class='hs-varop'></></span> <span class='hs-varid'>modToFile</span> <span class='hs-varid'>mod</span> <span class='hs-varop'><.></span> <span class='hs-str'>"tex"</span><span class='hs-layout'>)</span> <span class='hs-varid'>latex</span>
<a name="line-410"></a>
<a name="line-411"></a> <span class='hs-keyword'>where</span>
<a name="line-412"></a> <span class='hs-varid'>modToFile</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>A</span><span class='hs-varop'>.</span><span class='hs-conid'>ModuleName</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>FilePath</span>
<a name="line-413"></a> <span class='hs-varid'>modToFile</span> <span class='hs-varid'>mod</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>go</span> <span class='hs-varop'>$</span> <span class='hs-varid'>show</span> <span class='hs-varid'>mod</span>
<a name="line-414"></a> <span class='hs-keyword'>where</span>
<a name="line-415"></a> <span class='hs-varid'>go</span> <span class='hs-conid'>[]</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>[]</span>
<a name="line-416"></a> <span class='hs-varid'>go</span> <span class='hs-layout'>(</span><span class='hs-chr'>'.'</span> <span class='hs-conop'>:</span> <span class='hs-varid'>cs</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>pathSeparator</span> <span class='hs-conop'>:</span> <span class='hs-varid'>go</span> <span class='hs-varid'>cs</span>
<a name="line-417"></a> <span class='hs-varid'>go</span> <span class='hs-layout'>(</span><span class='hs-varid'>c</span> <span class='hs-conop'>:</span> <span class='hs-varid'>cs</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>c</span> <span class='hs-conop'>:</span> <span class='hs-varid'>go</span> <span class='hs-varid'>cs</span>
<a name="line-418"></a>
<a name="line-419"></a><a name="toLaTeX"></a><span class='hs-comment'>-- | Transforms the source code into LaTeX.</span>
<a name="line-420"></a><span class='hs-definition'>toLaTeX</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>String</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>HighlightingInfo</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Text</span>
<a name="line-421"></a><span class='hs-definition'>toLaTeX</span> <span class='hs-varid'>source</span> <span class='hs-varid'>hi</span>
<a name="line-422"></a>
<a name="line-423"></a> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>processTokens</span>
<a name="line-424"></a>
<a name="line-425"></a> <span class='hs-comment'>-- Head the list (the grouped chars contain the same meta info) and</span>
<a name="line-426"></a> <span class='hs-comment'>-- collect the characters into a string.</span>
<a name="line-427"></a> <span class='hs-varop'>.</span> <span class='hs-varid'>map</span> <span class='hs-layout'>(</span><span class='hs-keyglyph'>\</span><span class='hs-varid'>xs</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyword'>case</span> <span class='hs-varid'>xs</span> <span class='hs-keyword'>of</span>
<a name="line-428"></a> <span class='hs-layout'>(</span><span class='hs-varid'>mi</span><span class='hs-layout'>,</span> <span class='hs-layout'>(</span><span class='hs-varid'>pos</span><span class='hs-layout'>,</span> <span class='hs-keyword'>_</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <span class='hs-conop'>:</span> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'>-></span>
<a name="line-429"></a> <span class='hs-conid'>Token</span> <span class='hs-layout'>{</span> <span class='hs-varid'>string</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>T</span><span class='hs-varop'>.</span><span class='hs-varid'>pack</span> <span class='hs-varop'>$</span> <span class='hs-varid'>map</span> <span class='hs-layout'>(</span><span class='hs-keyglyph'>\</span><span class='hs-layout'>(</span><span class='hs-keyword'>_</span><span class='hs-layout'>,</span> <span class='hs-layout'>(</span><span class='hs-keyword'>_</span><span class='hs-layout'>,</span> <span class='hs-varid'>c</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>c</span><span class='hs-layout'>)</span> <span class='hs-varid'>xs</span>
<a name="line-430"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>info</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>maybe</span> <span class='hs-varid'>mempty</span> <span class='hs-varid'>id</span> <span class='hs-varid'>mi</span>
<a name="line-431"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>position</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>pos</span>
<a name="line-432"></a> <span class='hs-layout'>}</span>
<a name="line-433"></a> <span class='hs-conid'>[]</span> <span class='hs-keyglyph'>-></span> <span class='hs-sel'>__IMPOSSIBLE__</span><span class='hs-layout'>)</span>
<a name="line-434"></a>
<a name="line-435"></a> <span class='hs-varop'>.</span> <span class='hs-conid'>List</span><span class='hs-varop'>.</span><span class='hs-varid'>groupBy</span> <span class='hs-layout'>(</span><span class='hs-layout'>(</span><span class='hs-varop'>==</span><span class='hs-layout'>)</span> <span class='hs-varop'>`on`</span> <span class='hs-varid'>fst</span><span class='hs-layout'>)</span> <span class='hs-comment'>-- Characters which share the same</span>
<a name="line-436"></a> <span class='hs-comment'>-- meta info are the same token, so</span>
<a name="line-437"></a> <span class='hs-comment'>-- group them together.</span>
<a name="line-438"></a>
<a name="line-439"></a> <span class='hs-comment'>-- Look up the meta info at each position in the highlighting info.</span>
<a name="line-440"></a> <span class='hs-varop'>.</span> <span class='hs-varid'>map</span> <span class='hs-layout'>(</span><span class='hs-keyglyph'>\</span><span class='hs-layout'>(</span><span class='hs-varid'>pos</span><span class='hs-layout'>,</span> <span class='hs-varid'>char</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span>
<a name="line-441"></a> <span class='hs-layout'>(</span><span class='hs-conid'>Map</span><span class='hs-varop'>.</span><span class='hs-varid'>lookup</span> <span class='hs-varid'>pos</span> <span class='hs-varid'>infoMap</span><span class='hs-layout'>,</span> <span class='hs-layout'>(</span><span class='hs-varid'>pos</span><span class='hs-layout'>,</span> <span class='hs-varid'>char</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span>
<a name="line-442"></a>
<a name="line-443"></a> <span class='hs-comment'>-- Add position in file to each character.</span>
<a name="line-444"></a> <span class='hs-varop'>.</span> <span class='hs-varid'>zip</span> <span class='hs-keyglyph'>[</span><span class='hs-num'>1</span><span class='hs-keyglyph'>..</span><span class='hs-keyglyph'>]</span>
<a name="line-445"></a> <span class='hs-varop'>$</span> <span class='hs-varid'>source</span>
<a name="line-446"></a> <span class='hs-keyword'>where</span>
<a name="line-447"></a> <span class='hs-varid'>infoMap</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>toMap</span> <span class='hs-layout'>(</span><span class='hs-varid'>decompress</span> <span class='hs-varid'>hi</span><span class='hs-layout'>)</span>
<a name="line-448"></a>
<a name="line-449"></a><a name="processTokens"></a><span class='hs-definition'>processTokens</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Tokens</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Text</span>
<a name="line-450"></a><span class='hs-definition'>processTokens</span> <span class='hs-varid'>ts</span> <span class='hs-keyglyph'>=</span>
<a name="line-451"></a> <span class='hs-keyword'>case</span> <span class='hs-varid'>x</span> <span class='hs-keyword'>of</span>
<a name="line-452"></a> <span class='hs-conid'>Left</span> <span class='hs-str'>"Done"</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>s</span>
<a name="line-453"></a> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'>-></span> <span class='hs-sel'>__IMPOSSIBLE__</span>
<a name="line-454"></a> <span class='hs-keyword'>where</span>
<a name="line-455"></a> <span class='hs-layout'>(</span><span class='hs-varid'>x</span><span class='hs-layout'>,</span> <span class='hs-keyword'>_</span><span class='hs-layout'>,</span> <span class='hs-varid'>s</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>runLaTeX</span> <span class='hs-varid'>nonCode</span> <span class='hs-conid'>()</span> <span class='hs-layout'>(</span><span class='hs-varid'>emptyState</span> <span class='hs-layout'>{</span> <span class='hs-varid'>tokens</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>ts</span> <span class='hs-layout'>}</span><span class='hs-layout'>)</span>
</pre></body>
</html>
