hxt-8.3.0: doc/hdoc/src/Text-XML-HXT-RelaxNG-XmlSchema-RegexParser.html
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<pre><a name="line-1"></a><span class='comment'>-- ------------------------------------------------------------</span>
<a name="line-2"></a>
<a name="line-3"></a><span class='comment'>{- |
<a name="line-4"></a> Module : Text.XML.HXT.RelaxNG.XmlSchema.RegexParser
<a name="line-5"></a> Copyright : Copyright (C) 2005 Uwe Schmidt
<a name="line-6"></a> License : MIT
<a name="line-7"></a>
<a name="line-8"></a> Maintainer : Uwe Schmidt (uwe@fh-wedel.de)
<a name="line-9"></a> Stability : experimental
<a name="line-10"></a> Portability: portable
<a name="line-11"></a>
<a name="line-12"></a> W3C XML Schema Regular Expression Parser
<a name="line-13"></a>
<a name="line-14"></a> This parser supports the full W3C standard, the
<a name="line-15"></a> complete grammar can be found under <<a href="http://www.w3.org/TR/xmlschema11-2/#regexs">http://www.w3.org/TR/xmlschema11-2/#regexs</a>>
<a name="line-16"></a>
<a name="line-17"></a>-}</span>
<a name="line-18"></a>
<a name="line-19"></a><span class='comment'>-- ------------------------------------------------------------</span>
<a name="line-20"></a>
<a name="line-21"></a><span class='keyword'>module</span> <span class='conid'>Text</span><span class='varop'>.</span><span class='conid'>XML</span><span class='varop'>.</span><span class='conid'>HXT</span><span class='varop'>.</span><span class='conid'>RelaxNG</span><span class='varop'>.</span><span class='conid'>XmlSchema</span><span class='varop'>.</span><span class='conid'>RegexParser</span>
<a name="line-22"></a> <span class='layout'>(</span> <span class='varid'>parseRegex</span> <span class='layout'>)</span>
<a name="line-23"></a><span class='keyword'>where</span>
<a name="line-24"></a>
<a name="line-25"></a><span class='keyword'>import</span> <span class='conid'>Data</span><span class='varop'>.</span><span class='conid'>Maybe</span>
<a name="line-26"></a>
<a name="line-27"></a><span class='keyword'>import</span> <span class='conid'>Text</span><span class='varop'>.</span><span class='conid'>ParserCombinators</span><span class='varop'>.</span><span class='conid'>Parsec</span>
<a name="line-28"></a>
<a name="line-29"></a><span class='keyword'>import</span> <span class='conid'>Text</span><span class='varop'>.</span><span class='conid'>XML</span><span class='varop'>.</span><span class='conid'>HXT</span><span class='varop'>.</span><span class='conid'>DOM</span><span class='varop'>.</span><span class='conid'>Unicode</span>
<a name="line-30"></a>
<a name="line-31"></a><span class='keyword'>import</span> <span class='conid'>Text</span><span class='varop'>.</span><span class='conid'>XML</span><span class='varop'>.</span><span class='conid'>HXT</span><span class='varop'>.</span><span class='conid'>RelaxNG</span><span class='varop'>.</span><span class='conid'>Unicode</span><span class='varop'>.</span><span class='conid'>Blocks</span>
<a name="line-32"></a><span class='keyword'>import</span> <span class='conid'>Text</span><span class='varop'>.</span><span class='conid'>XML</span><span class='varop'>.</span><span class='conid'>HXT</span><span class='varop'>.</span><span class='conid'>RelaxNG</span><span class='varop'>.</span><span class='conid'>Unicode</span><span class='varop'>.</span><span class='conid'>CharProps</span>
<a name="line-33"></a><span class='keyword'>import</span> <span class='conid'>Text</span><span class='varop'>.</span><span class='conid'>XML</span><span class='varop'>.</span><span class='conid'>HXT</span><span class='varop'>.</span><span class='conid'>RelaxNG</span><span class='varop'>.</span><span class='conid'>XmlSchema</span><span class='varop'>.</span><span class='conid'>Regex</span>
<a name="line-34"></a>
<a name="line-35"></a><span class='comment'>-- ------------------------------------------------------------</span>
<a name="line-36"></a>
<a name="line-37"></a><a name="parseRegex"></a><span class='definition'>parseRegex</span> <span class='keyglyph'>::</span> <span class='conid'>String</span> <span class='keyglyph'>-></span> <span class='conid'>Either</span> <span class='conid'>String</span> <span class='conid'>Regex</span>
<a name="line-38"></a><span class='definition'>parseRegex</span>
<a name="line-39"></a> <span class='keyglyph'>=</span> <span class='varid'>either</span> <span class='layout'>(</span><span class='conid'>Left</span> <span class='varop'>.</span> <span class='varid'>show</span><span class='layout'>)</span> <span class='conid'>Right</span>
<a name="line-40"></a> <span class='varop'>.</span>
<a name="line-41"></a> <span class='varid'>parse</span> <span class='layout'>(</span> <span class='keyword'>do</span>
<a name="line-42"></a> <span class='varid'>r</span> <span class='keyglyph'><-</span> <span class='varid'>regExp</span>
<a name="line-43"></a> <span class='varid'>eof</span>
<a name="line-44"></a> <span class='varid'>return</span> <span class='varid'>r</span>
<a name="line-45"></a> <span class='layout'>)</span> <span class='str'>""</span>
<a name="line-46"></a>
<a name="line-47"></a><span class='comment'>-- ------------------------------------------------------------</span>
<a name="line-48"></a>
<a name="line-49"></a><a name="regExp"></a><span class='definition'>regExp</span> <span class='keyglyph'>::</span> <span class='conid'>Parser</span> <span class='conid'>Regex</span>
<a name="line-50"></a><span class='definition'>regExp</span>
<a name="line-51"></a> <span class='keyglyph'>=</span> <span class='keyword'>do</span>
<a name="line-52"></a> <span class='varid'>r1</span> <span class='keyglyph'><-</span> <span class='varid'>branch</span>
<a name="line-53"></a> <span class='varid'>rs</span> <span class='keyglyph'><-</span> <span class='varid'>many</span> <span class='varid'>branch1</span>
<a name="line-54"></a> <span class='varid'>return</span> <span class='layout'>(</span><span class='varid'>foldr1</span> <span class='varid'>mkAlt</span> <span class='varop'>$</span> <span class='varid'>r1</span><span class='conop'>:</span><span class='varid'>rs</span><span class='layout'>)</span>
<a name="line-55"></a> <span class='keyword'>where</span>
<a name="line-56"></a> <span class='varid'>branch1</span>
<a name="line-57"></a> <span class='keyglyph'>=</span> <span class='keyword'>do</span>
<a name="line-58"></a> <span class='varid'>char</span> <span class='chr'>'|'</span>
<a name="line-59"></a> <span class='varid'>branch</span>
<a name="line-60"></a>
<a name="line-61"></a><a name="branch"></a><span class='definition'>branch</span> <span class='keyglyph'>::</span> <span class='conid'>Parser</span> <span class='conid'>Regex</span>
<a name="line-62"></a><span class='definition'>branch</span>
<a name="line-63"></a> <span class='keyglyph'>=</span> <span class='keyword'>do</span>
<a name="line-64"></a> <span class='varid'>rs</span> <span class='keyglyph'><-</span> <span class='varid'>many</span> <span class='varid'>piece</span>
<a name="line-65"></a> <span class='varid'>return</span> <span class='varop'>$</span> <span class='varid'>foldr</span> <span class='varid'>mkSeq</span> <span class='varid'>mkUnit</span> <span class='varid'>rs</span>
<a name="line-66"></a>
<a name="line-67"></a><a name="piece"></a><span class='definition'>piece</span> <span class='keyglyph'>::</span> <span class='conid'>Parser</span> <span class='conid'>Regex</span>
<a name="line-68"></a><span class='definition'>piece</span>
<a name="line-69"></a> <span class='keyglyph'>=</span> <span class='keyword'>do</span>
<a name="line-70"></a> <span class='varid'>r</span> <span class='keyglyph'><-</span> <span class='varid'>atom</span>
<a name="line-71"></a> <span class='varid'>quantifier</span> <span class='varid'>r</span>
<a name="line-72"></a>
<a name="line-73"></a><a name="quantifier"></a><span class='definition'>quantifier</span> <span class='keyglyph'>::</span> <span class='conid'>Regex</span> <span class='keyglyph'>-></span> <span class='conid'>Parser</span> <span class='conid'>Regex</span>
<a name="line-74"></a><span class='definition'>quantifier</span> <span class='varid'>r</span>
<a name="line-75"></a> <span class='keyglyph'>=</span> <span class='layout'>(</span> <span class='keyword'>do</span>
<a name="line-76"></a> <span class='varid'>char</span> <span class='chr'>'?'</span>
<a name="line-77"></a> <span class='varid'>return</span> <span class='varop'>$</span> <span class='varid'>mkOpt</span> <span class='varid'>r</span> <span class='layout'>)</span>
<a name="line-78"></a> <span class='varop'><|></span>
<a name="line-79"></a> <span class='layout'>(</span> <span class='keyword'>do</span>
<a name="line-80"></a> <span class='varid'>char</span> <span class='chr'>'*'</span>
<a name="line-81"></a> <span class='varid'>return</span> <span class='varop'>$</span> <span class='varid'>mkStar</span> <span class='varid'>r</span> <span class='layout'>)</span>
<a name="line-82"></a> <span class='varop'><|></span>
<a name="line-83"></a> <span class='layout'>(</span> <span class='keyword'>do</span>
<a name="line-84"></a> <span class='varid'>char</span> <span class='chr'>'+'</span>
<a name="line-85"></a> <span class='varid'>return</span> <span class='varop'>$</span> <span class='varid'>mkRep</span> <span class='num'>1</span> <span class='varid'>r</span> <span class='layout'>)</span>
<a name="line-86"></a> <span class='varop'><|></span>
<a name="line-87"></a> <span class='layout'>(</span> <span class='keyword'>do</span>
<a name="line-88"></a> <span class='varid'>char</span> <span class='chr'>'{'</span>
<a name="line-89"></a> <span class='varid'>res</span> <span class='keyglyph'><-</span> <span class='varid'>quantity</span> <span class='varid'>r</span>
<a name="line-90"></a> <span class='varid'>char</span> <span class='chr'>'}'</span>
<a name="line-91"></a> <span class='varid'>return</span> <span class='varid'>res</span>
<a name="line-92"></a> <span class='layout'>)</span>
<a name="line-93"></a> <span class='varop'><|></span>
<a name="line-94"></a> <span class='layout'>(</span> <span class='varid'>return</span> <span class='varid'>r</span> <span class='layout'>)</span>
<a name="line-95"></a>
<a name="line-96"></a><a name="quantity"></a><span class='definition'>quantity</span> <span class='keyglyph'>::</span> <span class='conid'>Regex</span> <span class='keyglyph'>-></span> <span class='conid'>Parser</span> <span class='conid'>Regex</span>
<a name="line-97"></a><span class='definition'>quantity</span> <span class='varid'>r</span>
<a name="line-98"></a> <span class='keyglyph'>=</span> <span class='keyword'>do</span>
<a name="line-99"></a> <span class='varid'>lb</span> <span class='keyglyph'><-</span> <span class='varid'>many1</span> <span class='varid'>digit</span>
<a name="line-100"></a> <span class='varid'>quantityRest</span> <span class='varid'>r</span> <span class='layout'>(</span><span class='varid'>read</span> <span class='varid'>lb</span><span class='layout'>)</span>
<a name="line-101"></a>
<a name="line-102"></a><a name="quantityRest"></a><span class='definition'>quantityRest</span> <span class='keyglyph'>::</span> <span class='conid'>Regex</span> <span class='keyglyph'>-></span> <span class='conid'>Int</span> <span class='keyglyph'>-></span> <span class='conid'>Parser</span> <span class='conid'>Regex</span>
<a name="line-103"></a><span class='definition'>quantityRest</span> <span class='varid'>r</span> <span class='varid'>lb</span>
<a name="line-104"></a> <span class='keyglyph'>=</span> <span class='layout'>(</span> <span class='keyword'>do</span>
<a name="line-105"></a> <span class='varid'>char</span> <span class='chr'>','</span>
<a name="line-106"></a> <span class='varid'>ub</span> <span class='keyglyph'><-</span> <span class='varid'>many</span> <span class='varid'>digit</span>
<a name="line-107"></a> <span class='varid'>return</span> <span class='layout'>(</span> <span class='keyword'>if</span> <span class='varid'>null</span> <span class='varid'>ub</span>
<a name="line-108"></a> <span class='keyword'>then</span> <span class='varid'>mkRep</span> <span class='varid'>lb</span> <span class='varid'>r</span>
<a name="line-109"></a> <span class='keyword'>else</span> <span class='varid'>mkRng</span> <span class='varid'>lb</span> <span class='layout'>(</span><span class='varid'>read</span> <span class='varid'>ub</span><span class='layout'>)</span> <span class='varid'>r</span>
<a name="line-110"></a> <span class='layout'>)</span>
<a name="line-111"></a> <span class='layout'>)</span>
<a name="line-112"></a> <span class='varop'><|></span>
<a name="line-113"></a> <span class='layout'>(</span> <span class='varid'>return</span> <span class='varop'>$</span> <span class='varid'>mkRng</span> <span class='varid'>lb</span> <span class='varid'>lb</span> <span class='varid'>r</span><span class='layout'>)</span>
<a name="line-114"></a>
<a name="line-115"></a><a name="atom"></a><span class='definition'>atom</span> <span class='keyglyph'>::</span> <span class='conid'>Parser</span> <span class='conid'>Regex</span>
<a name="line-116"></a><span class='definition'>atom</span>
<a name="line-117"></a> <span class='keyglyph'>=</span> <span class='varid'>char1</span>
<a name="line-118"></a> <span class='varop'><|></span>
<a name="line-119"></a> <span class='varid'>charClass</span>
<a name="line-120"></a> <span class='varop'><|></span>
<a name="line-121"></a> <span class='varid'>between</span> <span class='layout'>(</span><span class='varid'>char</span> <span class='chr'>'('</span><span class='layout'>)</span> <span class='layout'>(</span><span class='varid'>char</span> <span class='chr'>')'</span><span class='layout'>)</span> <span class='varid'>regExp</span>
<a name="line-122"></a>
<a name="line-123"></a><a name="char1"></a><span class='definition'>char1</span> <span class='keyglyph'>::</span> <span class='conid'>Parser</span> <span class='conid'>Regex</span>
<a name="line-124"></a><span class='definition'>char1</span>
<a name="line-125"></a> <span class='keyglyph'>=</span> <span class='keyword'>do</span>
<a name="line-126"></a> <span class='varid'>c</span> <span class='keyglyph'><-</span> <span class='varid'>satisfy</span> <span class='varop'>$</span> <span class='layout'>(</span><span class='varop'>`notElem`</span> <span class='str'>".\\?*+{}()|[]"</span><span class='layout'>)</span>
<a name="line-127"></a> <span class='varid'>return</span> <span class='varop'>$</span> <span class='varid'>mkSym1</span> <span class='varid'>c</span>
<a name="line-128"></a>
<a name="line-129"></a><a name="charClass"></a><span class='definition'>charClass</span> <span class='keyglyph'>::</span> <span class='conid'>Parser</span> <span class='conid'>Regex</span>
<a name="line-130"></a><span class='definition'>charClass</span>
<a name="line-131"></a> <span class='keyglyph'>=</span> <span class='varid'>charClassEsc</span>
<a name="line-132"></a> <span class='varop'><|></span>
<a name="line-133"></a> <span class='varid'>charClassExpr</span>
<a name="line-134"></a> <span class='varop'><|></span>
<a name="line-135"></a> <span class='varid'>wildCardEsc</span>
<a name="line-136"></a>
<a name="line-137"></a><a name="charClassEsc"></a><span class='definition'>charClassEsc</span> <span class='keyglyph'>::</span> <span class='conid'>Parser</span> <span class='conid'>Regex</span>
<a name="line-138"></a><span class='definition'>charClassEsc</span>
<a name="line-139"></a> <span class='keyglyph'>=</span> <span class='keyword'>do</span>
<a name="line-140"></a> <span class='varid'>char</span> <span class='chr'>'\\'</span>
<a name="line-141"></a> <span class='layout'>(</span> <span class='varid'>singleCharEsc</span>
<a name="line-142"></a> <span class='varop'><|></span>
<a name="line-143"></a> <span class='varid'>multiCharEsc</span>
<a name="line-144"></a> <span class='varop'><|></span>
<a name="line-145"></a> <span class='varid'>catEsc</span>
<a name="line-146"></a> <span class='varop'><|></span>
<a name="line-147"></a> <span class='varid'>complEsc</span> <span class='layout'>)</span>
<a name="line-148"></a>
<a name="line-149"></a><a name="singleCharEsc"></a><span class='definition'>singleCharEsc</span> <span class='keyglyph'>::</span> <span class='conid'>Parser</span> <span class='conid'>Regex</span>
<a name="line-150"></a><span class='definition'>singleCharEsc</span>
<a name="line-151"></a> <span class='keyglyph'>=</span> <span class='keyword'>do</span>
<a name="line-152"></a> <span class='varid'>c</span> <span class='keyglyph'><-</span> <span class='varid'>singleCharEsc'</span>
<a name="line-153"></a> <span class='varid'>return</span> <span class='varop'>$</span> <span class='varid'>mkSym1</span> <span class='varid'>c</span>
<a name="line-154"></a>
<a name="line-155"></a><a name="singleCharEsc'"></a><span class='definition'>singleCharEsc'</span> <span class='keyglyph'>::</span> <span class='conid'>Parser</span> <span class='conid'>Char</span>
<a name="line-156"></a><span class='definition'>singleCharEsc'</span>
<a name="line-157"></a> <span class='keyglyph'>=</span> <span class='keyword'>do</span>
<a name="line-158"></a> <span class='varid'>c</span> <span class='keyglyph'><-</span> <span class='varid'>satisfy</span> <span class='layout'>(</span><span class='varop'>`elem`</span> <span class='str'>"nrt\\|.?*+(){}-[]^"</span><span class='layout'>)</span>
<a name="line-159"></a> <span class='varid'>return</span> <span class='varop'>$</span> <span class='varid'>maybe</span> <span class='varid'>c</span> <span class='varid'>id</span> <span class='varop'>.</span> <span class='varid'>lookup</span> <span class='varid'>c</span> <span class='varop'>.</span> <span class='varid'>zip</span> <span class='str'>"ntr"</span> <span class='varop'>$</span> <span class='str'>"\n\r\t"</span>
<a name="line-160"></a>
<a name="line-161"></a><a name="multiCharEsc"></a><span class='definition'>multiCharEsc</span> <span class='keyglyph'>::</span> <span class='conid'>Parser</span> <span class='conid'>Regex</span>
<a name="line-162"></a><span class='definition'>multiCharEsc</span>
<a name="line-163"></a> <span class='keyglyph'>=</span> <span class='keyword'>do</span>
<a name="line-164"></a> <span class='varid'>c</span> <span class='keyglyph'><-</span> <span class='varid'>satisfy</span> <span class='layout'>(</span><span class='varop'>`elem`</span> <span class='varid'>es</span><span class='layout'>)</span>
<a name="line-165"></a> <span class='varid'>return</span> <span class='varop'>$</span> <span class='varid'>mkSym</span> <span class='varop'>.</span> <span class='varid'>fromJust</span> <span class='varop'>.</span> <span class='varid'>lookup</span> <span class='varid'>c</span> <span class='varop'>$</span> <span class='varid'>pm</span>
<a name="line-166"></a> <span class='keyword'>where</span>
<a name="line-167"></a> <span class='varid'>es</span> <span class='keyglyph'>=</span> <span class='varid'>map</span> <span class='varid'>fst</span> <span class='varid'>pm</span>
<a name="line-168"></a> <span class='varid'>pm</span> <span class='keyglyph'>=</span> <span class='keyglyph'>[</span> <span class='layout'>(</span><span class='chr'>'s'</span><span class='layout'>,</span> <span class='varid'>isXmlSpaceChar</span> <span class='layout'>)</span>
<a name="line-169"></a> <span class='layout'>,</span> <span class='layout'>(</span><span class='chr'>'S'</span><span class='layout'>,</span> <span class='varid'>not</span> <span class='varop'>.</span> <span class='varid'>isXmlSpaceChar</span> <span class='layout'>)</span>
<a name="line-170"></a> <span class='layout'>,</span> <span class='layout'>(</span><span class='chr'>'i'</span><span class='layout'>,</span> <span class='varid'>isXmlNameStartChar</span> <span class='layout'>)</span>
<a name="line-171"></a> <span class='layout'>,</span> <span class='layout'>(</span><span class='chr'>'I'</span><span class='layout'>,</span> <span class='varid'>not</span> <span class='varop'>.</span> <span class='varid'>isXmlNameStartChar</span> <span class='layout'>)</span>
<a name="line-172"></a> <span class='layout'>,</span> <span class='layout'>(</span><span class='chr'>'c'</span><span class='layout'>,</span> <span class='varid'>isXmlNameChar</span> <span class='layout'>)</span>
<a name="line-173"></a> <span class='layout'>,</span> <span class='layout'>(</span><span class='chr'>'C'</span><span class='layout'>,</span> <span class='varid'>not</span> <span class='varop'>.</span> <span class='varid'>isXmlNameChar</span> <span class='layout'>)</span>
<a name="line-174"></a> <span class='layout'>,</span> <span class='layout'>(</span><span class='chr'>'d'</span><span class='layout'>,</span> <span class='varid'>isDigit</span> <span class='layout'>)</span>
<a name="line-175"></a> <span class='layout'>,</span> <span class='layout'>(</span><span class='chr'>'D'</span><span class='layout'>,</span> <span class='varid'>not</span> <span class='varop'>.</span> <span class='varid'>isDigit</span> <span class='layout'>)</span>
<a name="line-176"></a> <span class='layout'>,</span> <span class='layout'>(</span><span class='chr'>'w'</span><span class='layout'>,</span> <span class='varid'>not</span> <span class='varop'>.</span> <span class='varid'>isNotWord</span> <span class='layout'>)</span>
<a name="line-177"></a> <span class='layout'>,</span> <span class='layout'>(</span><span class='chr'>'W'</span><span class='layout'>,</span> <span class='varid'>isNotWord</span> <span class='layout'>)</span>
<a name="line-178"></a> <span class='keyglyph'>]</span>
<a name="line-179"></a> <span class='varid'>isDigit</span> <span class='keyglyph'>=</span> <span class='layout'>(</span><span class='chr'>'0'</span> <span class='varop'><=</span><span class='layout'>)</span> <span class='varop'><&&></span> <span class='layout'>(</span><span class='varop'><=</span> <span class='chr'>'9'</span><span class='layout'>)</span>
<a name="line-180"></a> <span class='varid'>isNotWord</span> <span class='keyglyph'>=</span> <span class='varid'>isUnicodeP</span> <span class='varop'><||></span>
<a name="line-181"></a> <span class='varid'>isUnicodeZ</span> <span class='varop'><||></span>
<a name="line-182"></a> <span class='varid'>isUnicodeC</span>
<a name="line-183"></a>
<a name="line-184"></a><a name="catEsc"></a><span class='definition'>catEsc</span> <span class='keyglyph'>::</span> <span class='conid'>Parser</span> <span class='conid'>Regex</span>
<a name="line-185"></a><span class='definition'>catEsc</span>
<a name="line-186"></a> <span class='keyglyph'>=</span> <span class='keyword'>do</span>
<a name="line-187"></a> <span class='varid'>char</span> <span class='chr'>'p'</span>
<a name="line-188"></a> <span class='varid'>s</span> <span class='keyglyph'><-</span> <span class='varid'>between</span> <span class='layout'>(</span><span class='varid'>char</span> <span class='chr'>'{'</span><span class='layout'>)</span> <span class='layout'>(</span><span class='varid'>char</span> <span class='chr'>'}'</span><span class='layout'>)</span> <span class='varid'>charProp</span>
<a name="line-189"></a> <span class='varid'>return</span> <span class='varop'>$</span> <span class='varid'>mkSym</span> <span class='varid'>s</span>
<a name="line-190"></a>
<a name="line-191"></a><a name="charProp"></a><span class='definition'>charProp</span> <span class='keyglyph'>::</span> <span class='conid'>Parser</span> <span class='layout'>(</span><span class='conid'>Char</span> <span class='keyglyph'>-></span> <span class='conid'>Bool</span><span class='layout'>)</span>
<a name="line-192"></a><span class='definition'>charProp</span>
<a name="line-193"></a> <span class='keyglyph'>=</span> <span class='varid'>isCategory</span>
<a name="line-194"></a> <span class='varop'><|></span>
<a name="line-195"></a> <span class='varid'>isBlock</span>
<a name="line-196"></a>
<a name="line-197"></a><a name="isBlock"></a><span class='definition'>isBlock</span> <span class='keyglyph'>::</span> <span class='conid'>Parser</span> <span class='layout'>(</span><span class='conid'>Char</span> <span class='keyglyph'>-></span> <span class='conid'>Bool</span><span class='layout'>)</span>
<a name="line-198"></a><span class='definition'>isBlock</span>
<a name="line-199"></a> <span class='keyglyph'>=</span> <span class='keyword'>do</span>
<a name="line-200"></a> <span class='varid'>string</span> <span class='str'>"Is"</span>
<a name="line-201"></a> <span class='varid'>name</span> <span class='keyglyph'><-</span> <span class='varid'>many1</span> <span class='layout'>(</span><span class='varid'>satisfy</span> <span class='varid'>legalChar</span><span class='layout'>)</span>
<a name="line-202"></a> <span class='keyword'>let</span> <span class='varid'>b</span> <span class='keyglyph'>=</span> <span class='varid'>lookup</span> <span class='varid'>name</span> <span class='varid'>codeBlocks</span>
<a name="line-203"></a> <span class='keyword'>if</span> <span class='varid'>isJust</span> <span class='varid'>b</span>
<a name="line-204"></a> <span class='keyword'>then</span> <span class='varid'>return</span> <span class='varop'>$</span> <span class='keyword'>let</span>
<a name="line-205"></a> <span class='layout'>(</span><span class='varid'>lb</span><span class='layout'>,</span> <span class='varid'>ub</span><span class='layout'>)</span> <span class='keyglyph'>=</span> <span class='varid'>fromJust</span> <span class='varid'>b</span>
<a name="line-206"></a> <span class='keyword'>in</span>
<a name="line-207"></a> <span class='layout'>(</span><span class='varid'>lb</span> <span class='varop'><=</span><span class='layout'>)</span> <span class='varop'><&&></span> <span class='layout'>(</span><span class='varop'><=</span> <span class='varid'>ub</span><span class='layout'>)</span>
<a name="line-208"></a> <span class='keyword'>else</span> <span class='varid'>fail</span> <span class='varop'>$</span> <span class='str'>"unknown Unicode code block "</span> <span class='varop'>++</span> <span class='varid'>show</span> <span class='varid'>name</span>
<a name="line-209"></a> <span class='keyword'>where</span>
<a name="line-210"></a> <span class='varid'>legalChar</span> <span class='varid'>c</span> <span class='keyglyph'>=</span> <span class='chr'>'A'</span> <span class='varop'><=</span> <span class='varid'>c</span> <span class='varop'>&&</span> <span class='varid'>c</span> <span class='varop'><=</span> <span class='chr'>'Z'</span> <span class='varop'>||</span>
<a name="line-211"></a> <span class='chr'>'a'</span> <span class='varop'><=</span> <span class='varid'>c</span> <span class='varop'>&&</span> <span class='varid'>c</span> <span class='varop'><=</span> <span class='chr'>'z'</span> <span class='varop'>||</span>
<a name="line-212"></a> <span class='chr'>'0'</span> <span class='varop'><=</span> <span class='varid'>c</span> <span class='varop'>&&</span> <span class='varid'>c</span> <span class='varop'><=</span> <span class='chr'>'9'</span> <span class='varop'>||</span>
<a name="line-213"></a> <span class='chr'>'-'</span> <span class='varop'>==</span> <span class='varid'>c</span>
<a name="line-214"></a>
<a name="line-215"></a><a name="isCategory"></a><span class='definition'>isCategory</span> <span class='keyglyph'>::</span> <span class='conid'>Parser</span> <span class='layout'>(</span><span class='conid'>Char</span> <span class='keyglyph'>-></span> <span class='conid'>Bool</span><span class='layout'>)</span>
<a name="line-216"></a><span class='definition'>isCategory</span>
<a name="line-217"></a> <span class='keyglyph'>=</span> <span class='keyword'>do</span>
<a name="line-218"></a> <span class='varid'>pr</span> <span class='keyglyph'><-</span> <span class='varid'>isCategory'</span>
<a name="line-219"></a> <span class='varid'>return</span> <span class='varop'>$</span> <span class='varid'>fromJust</span> <span class='layout'>(</span><span class='varid'>lookup</span> <span class='varid'>pr</span> <span class='varid'>categories</span><span class='layout'>)</span>
<a name="line-220"></a>
<a name="line-221"></a><a name="categories"></a><span class='definition'>categories</span> <span class='keyglyph'>::</span> <span class='keyglyph'>[</span><span class='layout'>(</span><span class='conid'>String</span><span class='layout'>,</span> <span class='conid'>Char</span> <span class='keyglyph'>-></span> <span class='conid'>Bool</span><span class='layout'>)</span><span class='keyglyph'>]</span>
<a name="line-222"></a><span class='definition'>categories</span>
<a name="line-223"></a> <span class='keyglyph'>=</span> <span class='keyglyph'>[</span> <span class='layout'>(</span><span class='str'>"C"</span><span class='layout'>,</span> <span class='varid'>isUnicodeC</span> <span class='layout'>)</span>
<a name="line-224"></a> <span class='layout'>,</span> <span class='layout'>(</span><span class='str'>"Cc"</span><span class='layout'>,</span> <span class='varid'>isUnicodeCc</span><span class='layout'>)</span>
<a name="line-225"></a> <span class='layout'>,</span> <span class='layout'>(</span><span class='str'>"Cf"</span><span class='layout'>,</span> <span class='varid'>isUnicodeCf</span><span class='layout'>)</span>
<a name="line-226"></a> <span class='layout'>,</span> <span class='layout'>(</span><span class='str'>"Co"</span><span class='layout'>,</span> <span class='varid'>isUnicodeCo</span><span class='layout'>)</span>
<a name="line-227"></a> <span class='layout'>,</span> <span class='layout'>(</span><span class='str'>"Cs"</span><span class='layout'>,</span> <span class='varid'>isUnicodeCs</span><span class='layout'>)</span>
<a name="line-228"></a> <span class='layout'>,</span> <span class='layout'>(</span><span class='str'>"L"</span><span class='layout'>,</span> <span class='varid'>isUnicodeL</span> <span class='layout'>)</span>
<a name="line-229"></a> <span class='layout'>,</span> <span class='layout'>(</span><span class='str'>"Ll"</span><span class='layout'>,</span> <span class='varid'>isUnicodeLl</span><span class='layout'>)</span>
<a name="line-230"></a> <span class='layout'>,</span> <span class='layout'>(</span><span class='str'>"Lm"</span><span class='layout'>,</span> <span class='varid'>isUnicodeLm</span><span class='layout'>)</span>
<a name="line-231"></a> <span class='layout'>,</span> <span class='layout'>(</span><span class='str'>"Lo"</span><span class='layout'>,</span> <span class='varid'>isUnicodeLo</span><span class='layout'>)</span>
<a name="line-232"></a> <span class='layout'>,</span> <span class='layout'>(</span><span class='str'>"Lt"</span><span class='layout'>,</span> <span class='varid'>isUnicodeLt</span><span class='layout'>)</span>
<a name="line-233"></a> <span class='layout'>,</span> <span class='layout'>(</span><span class='str'>"Lu"</span><span class='layout'>,</span> <span class='varid'>isUnicodeLu</span><span class='layout'>)</span>
<a name="line-234"></a> <span class='layout'>,</span> <span class='layout'>(</span><span class='str'>"M"</span><span class='layout'>,</span> <span class='varid'>isUnicodeM</span> <span class='layout'>)</span>
<a name="line-235"></a> <span class='layout'>,</span> <span class='layout'>(</span><span class='str'>"Mc"</span><span class='layout'>,</span> <span class='varid'>isUnicodeMc</span><span class='layout'>)</span>
<a name="line-236"></a> <span class='layout'>,</span> <span class='layout'>(</span><span class='str'>"Me"</span><span class='layout'>,</span> <span class='varid'>isUnicodeMe</span><span class='layout'>)</span>
<a name="line-237"></a> <span class='layout'>,</span> <span class='layout'>(</span><span class='str'>"Mn"</span><span class='layout'>,</span> <span class='varid'>isUnicodeMn</span><span class='layout'>)</span>
<a name="line-238"></a> <span class='layout'>,</span> <span class='layout'>(</span><span class='str'>"N"</span><span class='layout'>,</span> <span class='varid'>isUnicodeN</span> <span class='layout'>)</span>
<a name="line-239"></a> <span class='layout'>,</span> <span class='layout'>(</span><span class='str'>"Nd"</span><span class='layout'>,</span> <span class='varid'>isUnicodeNd</span><span class='layout'>)</span>
<a name="line-240"></a> <span class='layout'>,</span> <span class='layout'>(</span><span class='str'>"Nl"</span><span class='layout'>,</span> <span class='varid'>isUnicodeNl</span><span class='layout'>)</span>
<a name="line-241"></a> <span class='layout'>,</span> <span class='layout'>(</span><span class='str'>"No"</span><span class='layout'>,</span> <span class='varid'>isUnicodeNo</span><span class='layout'>)</span>
<a name="line-242"></a> <span class='layout'>,</span> <span class='layout'>(</span><span class='str'>"P"</span><span class='layout'>,</span> <span class='varid'>isUnicodeP</span> <span class='layout'>)</span>
<a name="line-243"></a> <span class='layout'>,</span> <span class='layout'>(</span><span class='str'>"Pc"</span><span class='layout'>,</span> <span class='varid'>isUnicodePc</span><span class='layout'>)</span>
<a name="line-244"></a> <span class='layout'>,</span> <span class='layout'>(</span><span class='str'>"Pd"</span><span class='layout'>,</span> <span class='varid'>isUnicodePd</span><span class='layout'>)</span>
<a name="line-245"></a> <span class='layout'>,</span> <span class='layout'>(</span><span class='str'>"Pe"</span><span class='layout'>,</span> <span class='varid'>isUnicodePe</span><span class='layout'>)</span>
<a name="line-246"></a> <span class='layout'>,</span> <span class='layout'>(</span><span class='str'>"Pf"</span><span class='layout'>,</span> <span class='varid'>isUnicodePf</span><span class='layout'>)</span>
<a name="line-247"></a> <span class='layout'>,</span> <span class='layout'>(</span><span class='str'>"Pi"</span><span class='layout'>,</span> <span class='varid'>isUnicodePi</span><span class='layout'>)</span>
<a name="line-248"></a> <span class='layout'>,</span> <span class='layout'>(</span><span class='str'>"Po"</span><span class='layout'>,</span> <span class='varid'>isUnicodePo</span><span class='layout'>)</span>
<a name="line-249"></a> <span class='layout'>,</span> <span class='layout'>(</span><span class='str'>"Ps"</span><span class='layout'>,</span> <span class='varid'>isUnicodePs</span><span class='layout'>)</span>
<a name="line-250"></a> <span class='layout'>,</span> <span class='layout'>(</span><span class='str'>"S"</span><span class='layout'>,</span> <span class='varid'>isUnicodeS</span> <span class='layout'>)</span>
<a name="line-251"></a> <span class='layout'>,</span> <span class='layout'>(</span><span class='str'>"Sc"</span><span class='layout'>,</span> <span class='varid'>isUnicodeSc</span><span class='layout'>)</span>
<a name="line-252"></a> <span class='layout'>,</span> <span class='layout'>(</span><span class='str'>"Sk"</span><span class='layout'>,</span> <span class='varid'>isUnicodeSk</span><span class='layout'>)</span>
<a name="line-253"></a> <span class='layout'>,</span> <span class='layout'>(</span><span class='str'>"Sm"</span><span class='layout'>,</span> <span class='varid'>isUnicodeSm</span><span class='layout'>)</span>
<a name="line-254"></a> <span class='layout'>,</span> <span class='layout'>(</span><span class='str'>"So"</span><span class='layout'>,</span> <span class='varid'>isUnicodeSo</span><span class='layout'>)</span>
<a name="line-255"></a> <span class='layout'>,</span> <span class='layout'>(</span><span class='str'>"Z"</span><span class='layout'>,</span> <span class='varid'>isUnicodeZ</span> <span class='layout'>)</span>
<a name="line-256"></a> <span class='layout'>,</span> <span class='layout'>(</span><span class='str'>"Zl"</span><span class='layout'>,</span> <span class='varid'>isUnicodeZl</span><span class='layout'>)</span>
<a name="line-257"></a> <span class='layout'>,</span> <span class='layout'>(</span><span class='str'>"Zp"</span><span class='layout'>,</span> <span class='varid'>isUnicodeZp</span><span class='layout'>)</span>
<a name="line-258"></a> <span class='layout'>,</span> <span class='layout'>(</span><span class='str'>"Zs"</span><span class='layout'>,</span> <span class='varid'>isUnicodeZs</span><span class='layout'>)</span>
<a name="line-259"></a> <span class='keyglyph'>]</span>
<a name="line-260"></a>
<a name="line-261"></a><a name="isCategory'"></a><span class='definition'>isCategory'</span> <span class='keyglyph'>::</span> <span class='conid'>Parser</span> <span class='conid'>String</span>
<a name="line-262"></a><span class='definition'>isCategory'</span>
<a name="line-263"></a> <span class='keyglyph'>=</span> <span class='layout'>(</span> <span class='varid'>foldr1</span> <span class='layout'>(</span><span class='varop'><|></span><span class='layout'>)</span> <span class='varop'>.</span> <span class='varid'>map</span> <span class='layout'>(</span><span class='varid'>uncurry</span> <span class='varid'>prop</span><span class='layout'>)</span> <span class='varop'>$</span>
<a name="line-264"></a> <span class='keyglyph'>[</span> <span class='layout'>(</span><span class='chr'>'L'</span><span class='layout'>,</span> <span class='str'>"ultmo"</span><span class='layout'>)</span>
<a name="line-265"></a> <span class='layout'>,</span> <span class='layout'>(</span><span class='chr'>'M'</span><span class='layout'>,</span> <span class='str'>"nce"</span><span class='layout'>)</span>
<a name="line-266"></a> <span class='layout'>,</span> <span class='layout'>(</span><span class='chr'>'N'</span><span class='layout'>,</span> <span class='str'>"dlo"</span><span class='layout'>)</span>
<a name="line-267"></a> <span class='layout'>,</span> <span class='layout'>(</span><span class='chr'>'P'</span><span class='layout'>,</span> <span class='str'>"cdseifo"</span><span class='layout'>)</span>
<a name="line-268"></a> <span class='layout'>,</span> <span class='layout'>(</span><span class='chr'>'Z'</span><span class='layout'>,</span> <span class='str'>"slp"</span><span class='layout'>)</span>
<a name="line-269"></a> <span class='layout'>,</span> <span class='layout'>(</span><span class='chr'>'S'</span><span class='layout'>,</span> <span class='str'>"mcko"</span><span class='layout'>)</span>
<a name="line-270"></a> <span class='layout'>,</span> <span class='layout'>(</span><span class='chr'>'C'</span><span class='layout'>,</span> <span class='str'>"cfon"</span><span class='layout'>)</span>
<a name="line-271"></a> <span class='keyglyph'>]</span>
<a name="line-272"></a> <span class='layout'>)</span> <span class='varop'><?></span> <span class='str'>"illegal Unicode character property"</span>
<a name="line-273"></a> <span class='keyword'>where</span>
<a name="line-274"></a> <span class='varid'>prop</span> <span class='varid'>c1</span> <span class='varid'>cs2</span>
<a name="line-275"></a> <span class='keyglyph'>=</span> <span class='keyword'>do</span>
<a name="line-276"></a> <span class='varid'>char</span> <span class='varid'>c1</span>
<a name="line-277"></a> <span class='varid'>s2</span> <span class='keyglyph'><-</span> <span class='varid'>option</span> <span class='str'>""</span>
<a name="line-278"></a> <span class='layout'>(</span> <span class='keyword'>do</span>
<a name="line-279"></a> <span class='varid'>c2</span> <span class='keyglyph'><-</span> <span class='varid'>satisfy</span> <span class='layout'>(</span><span class='varop'>`elem`</span> <span class='varid'>cs2</span><span class='layout'>)</span>
<a name="line-280"></a> <span class='varid'>return</span> <span class='keyglyph'>[</span><span class='varid'>c2</span><span class='keyglyph'>]</span> <span class='layout'>)</span>
<a name="line-281"></a> <span class='varid'>return</span> <span class='varop'>$</span> <span class='varid'>c1</span><span class='conop'>:</span><span class='varid'>s2</span>
<a name="line-282"></a>
<a name="line-283"></a><a name="complEsc"></a><span class='definition'>complEsc</span> <span class='keyglyph'>::</span> <span class='conid'>Parser</span> <span class='conid'>Regex</span>
<a name="line-284"></a><span class='definition'>complEsc</span>
<a name="line-285"></a> <span class='keyglyph'>=</span> <span class='keyword'>do</span>
<a name="line-286"></a> <span class='varid'>char</span> <span class='chr'>'P'</span>
<a name="line-287"></a> <span class='varid'>s</span> <span class='keyglyph'><-</span> <span class='varid'>between</span> <span class='layout'>(</span><span class='varid'>char</span> <span class='chr'>'{'</span><span class='layout'>)</span> <span class='layout'>(</span><span class='varid'>char</span> <span class='chr'>'}'</span><span class='layout'>)</span> <span class='varid'>charProp</span>
<a name="line-288"></a> <span class='varid'>return</span> <span class='varop'>$</span> <span class='varid'>mkSym</span> <span class='layout'>(</span><span class='varid'>not</span> <span class='varop'>.</span> <span class='varid'>s</span><span class='layout'>)</span>
<a name="line-289"></a>
<a name="line-290"></a><a name="charClassExpr"></a><span class='definition'>charClassExpr</span> <span class='keyglyph'>::</span> <span class='conid'>Parser</span> <span class='conid'>Regex</span>
<a name="line-291"></a><span class='definition'>charClassExpr</span>
<a name="line-292"></a> <span class='keyglyph'>=</span> <span class='varid'>between</span> <span class='layout'>(</span><span class='varid'>char</span> <span class='chr'>'['</span><span class='layout'>)</span> <span class='layout'>(</span><span class='varid'>char</span> <span class='chr'>']'</span><span class='layout'>)</span> <span class='varid'>charGroup</span>
<a name="line-293"></a>
<a name="line-294"></a><a name="charGroup"></a><span class='definition'>charGroup</span> <span class='keyglyph'>::</span> <span class='conid'>Parser</span> <span class='conid'>Regex</span>
<a name="line-295"></a><span class='definition'>charGroup</span>
<a name="line-296"></a> <span class='keyglyph'>=</span> <span class='keyword'>do</span>
<a name="line-297"></a> <span class='varid'>r</span> <span class='keyglyph'><-</span> <span class='layout'>(</span> <span class='varid'>negCharGroup</span> <span class='comment'>-- a ^ at beginning denotes negation, not start of posCharGroup</span>
<a name="line-298"></a> <span class='varop'><|></span>
<a name="line-299"></a> <span class='varid'>posCharGroup</span>
<a name="line-300"></a> <span class='layout'>)</span>
<a name="line-301"></a> <span class='varid'>s</span> <span class='keyglyph'><-</span> <span class='varid'>option</span> <span class='layout'>(</span><span class='varid'>mkZero</span> <span class='str'>""</span><span class='layout'>)</span> <span class='comment'>-- charClassSub</span>
<a name="line-302"></a> <span class='layout'>(</span> <span class='keyword'>do</span>
<a name="line-303"></a> <span class='varid'>char</span> <span class='chr'>'-'</span>
<a name="line-304"></a> <span class='varid'>charClassExpr</span>
<a name="line-305"></a> <span class='layout'>)</span>
<a name="line-306"></a> <span class='varid'>return</span> <span class='varop'>$</span> <span class='varid'>mkDif</span> <span class='varid'>r</span> <span class='varid'>s</span>
<a name="line-307"></a>
<a name="line-308"></a><a name="posCharGroup"></a><span class='definition'>posCharGroup</span> <span class='keyglyph'>::</span> <span class='conid'>Parser</span> <span class='conid'>Regex</span>
<a name="line-309"></a><span class='definition'>posCharGroup</span>
<a name="line-310"></a> <span class='keyglyph'>=</span> <span class='keyword'>do</span>
<a name="line-311"></a> <span class='varid'>rs</span> <span class='keyglyph'><-</span> <span class='varid'>many1</span> <span class='layout'>(</span><span class='varid'>charRange</span> <span class='varop'><|></span> <span class='varid'>charClassEsc</span><span class='layout'>)</span>
<a name="line-312"></a> <span class='varid'>return</span> <span class='varop'>$</span> <span class='varid'>foldr1</span> <span class='varid'>mkAlt</span> <span class='varid'>rs</span>
<a name="line-313"></a>
<a name="line-314"></a><a name="charRange"></a><span class='definition'>charRange</span> <span class='keyglyph'>::</span> <span class='conid'>Parser</span> <span class='conid'>Regex</span>
<a name="line-315"></a><span class='definition'>charRange</span>
<a name="line-316"></a> <span class='keyglyph'>=</span> <span class='varid'>try</span> <span class='varid'>seRange</span>
<a name="line-317"></a> <span class='varop'><|></span>
<a name="line-318"></a> <span class='varid'>xmlCharIncDash</span>
<a name="line-319"></a>
<a name="line-320"></a><a name="seRange"></a><span class='definition'>seRange</span> <span class='keyglyph'>::</span> <span class='conid'>Parser</span> <span class='conid'>Regex</span>
<a name="line-321"></a><span class='definition'>seRange</span>
<a name="line-322"></a> <span class='keyglyph'>=</span> <span class='keyword'>do</span>
<a name="line-323"></a> <span class='varid'>c1</span> <span class='keyglyph'><-</span> <span class='varid'>charOrEsc'</span>
<a name="line-324"></a> <span class='varid'>char</span> <span class='chr'>'-'</span>
<a name="line-325"></a> <span class='varid'>c2</span> <span class='keyglyph'><-</span> <span class='varid'>charOrEsc'</span>
<a name="line-326"></a> <span class='varid'>return</span> <span class='varop'>$</span> <span class='varid'>mkSymRng</span> <span class='varid'>c1</span> <span class='varid'>c2</span>
<a name="line-327"></a>
<a name="line-328"></a><a name="charOrEsc'"></a><span class='definition'>charOrEsc'</span> <span class='keyglyph'>::</span> <span class='conid'>Parser</span> <span class='conid'>Char</span>
<a name="line-329"></a><span class='definition'>charOrEsc'</span>
<a name="line-330"></a> <span class='keyglyph'>=</span> <span class='varid'>satisfy</span> <span class='layout'>(</span><span class='varop'>`notElem`</span> <span class='str'>"\\-[]"</span><span class='layout'>)</span>
<a name="line-331"></a> <span class='varop'><|></span>
<a name="line-332"></a> <span class='varid'>singleCharEsc'</span>
<a name="line-333"></a>
<a name="line-334"></a><a name="xmlCharIncDash"></a><span class='definition'>xmlCharIncDash</span> <span class='keyglyph'>::</span> <span class='conid'>Parser</span> <span class='conid'>Regex</span>
<a name="line-335"></a><span class='definition'>xmlCharIncDash</span>
<a name="line-336"></a> <span class='keyglyph'>=</span> <span class='keyword'>do</span>
<a name="line-337"></a> <span class='varid'>c</span> <span class='keyglyph'><-</span> <span class='varid'>satisfy</span> <span class='layout'>(</span><span class='varop'>`notElem`</span> <span class='str'>"\\[]"</span><span class='layout'>)</span>
<a name="line-338"></a> <span class='varid'>return</span> <span class='varop'>$</span> <span class='varid'>mkSym1</span> <span class='varid'>c</span>
<a name="line-339"></a>
<a name="line-340"></a><a name="negCharGroup"></a><span class='definition'>negCharGroup</span> <span class='keyglyph'>::</span> <span class='conid'>Parser</span> <span class='conid'>Regex</span>
<a name="line-341"></a><span class='definition'>negCharGroup</span>
<a name="line-342"></a> <span class='keyglyph'>=</span> <span class='keyword'>do</span>
<a name="line-343"></a> <span class='varid'>char</span> <span class='chr'>'^'</span>
<a name="line-344"></a> <span class='varid'>r</span> <span class='keyglyph'><-</span> <span class='varid'>posCharGroup</span>
<a name="line-345"></a> <span class='varid'>return</span> <span class='varop'>$</span> <span class='varid'>mkCompl</span> <span class='varid'>r</span>
<a name="line-346"></a>
<a name="line-347"></a><a name="wildCardEsc"></a><span class='definition'>wildCardEsc</span> <span class='keyglyph'>::</span> <span class='conid'>Parser</span> <span class='conid'>Regex</span>
<a name="line-348"></a><span class='definition'>wildCardEsc</span>
<a name="line-349"></a> <span class='keyglyph'>=</span> <span class='keyword'>do</span>
<a name="line-350"></a> <span class='varid'>char</span> <span class='chr'>'.'</span>
<a name="line-351"></a> <span class='varid'>return</span> <span class='varop'>$</span> <span class='varid'>mkSym</span> <span class='layout'>(</span><span class='varop'>`notElem`</span> <span class='str'>"\n\r"</span><span class='layout'>)</span>
<a name="line-352"></a>
<a name="line-353"></a>
<a name="line-354"></a><span class='comment'>-- ------------------------------------------------------------</span>
</pre></body>
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