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<pre><a name="line-1"></a><span class='hs-comment'>{-
<a name="line-2"></a>Copyright (C) 2009 John MacFarlane <jgm@berkeley.edu>
<a name="line-3"></a>
<a name="line-4"></a>This program is free software; you can redistribute it and/or modify
<a name="line-5"></a>it under the terms of the GNU General Public License as published by
<a name="line-6"></a>the Free Software Foundation; either version 2 of the License, or
<a name="line-7"></a>(at your option) any later version.
<a name="line-8"></a>
<a name="line-9"></a>This program is distributed in the hope that it will be useful,
<a name="line-10"></a>but WITHOUT ANY WARRANTY; without even the implied warranty of
<a name="line-11"></a>MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
<a name="line-12"></a>GNU General Public License for more details.
<a name="line-13"></a>
<a name="line-14"></a>You should have received a copy of the GNU General Public License
<a name="line-15"></a>along with this program; if not, write to the Free Software
<a name="line-16"></a>Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
<a name="line-17"></a>-}</span>
<a name="line-18"></a>
<a name="line-19"></a><span class='hs-comment'>{- | Functions for writing a parsed formula as MathML.
<a name="line-20"></a>-}</span>
<a name="line-21"></a>
<a name="line-22"></a><span class='hs-keyword'>module</span> <span class='hs-conid'>Text</span><span class='hs-varop'>.</span><span class='hs-conid'>TeXMath</span><span class='hs-varop'>.</span><span class='hs-conid'>MathML</span> <span class='hs-layout'>(</span><span class='hs-varid'>toMathML</span><span class='hs-layout'>,</span> <span class='hs-conid'>DisplayType</span><span class='hs-layout'>(</span><span class='hs-keyglyph'>..</span><span class='hs-layout'>)</span><span class='hs-layout'>,</span> <span class='hs-varid'>showExp</span><span class='hs-layout'>)</span>
<a name="line-23"></a><span class='hs-keyword'>where</span>
<a name="line-24"></a>
<a name="line-25"></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'>M</span>
<a name="line-26"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Text</span><span class='hs-varop'>.</span><span class='hs-conid'>XML</span><span class='hs-varop'>.</span><span class='hs-conid'>Light</span>
<a name="line-27"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Text</span><span class='hs-varop'>.</span><span class='hs-conid'>TeXMath</span><span class='hs-varop'>.</span><span class='hs-conid'>Types</span>
<a name="line-28"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>Generics</span> <span class='hs-layout'>(</span><span class='hs-varid'>everywhere</span><span class='hs-layout'>,</span> <span class='hs-varid'>mkT</span><span class='hs-layout'>)</span>
<a name="line-29"></a>
<a name="line-30"></a><a name="DisplayType"></a><span class='hs-keyword'>data</span> <span class='hs-conid'>DisplayType</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>DisplayBlock</span>
<a name="line-31"></a> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>DisplayInline</span>
<a name="line-32"></a> <span class='hs-keyword'>deriving</span> <span class='hs-conid'>Show</span>
<a name="line-33"></a>
<a name="line-34"></a><a name="toMathML"></a><span class='hs-definition'>toMathML</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>DisplayType</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>Exp</span><span class='hs-keyglyph'>]</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Element</span>
<a name="line-35"></a><span class='hs-definition'>toMathML</span> <span class='hs-varid'>dt</span> <span class='hs-varid'>exprs</span> <span class='hs-keyglyph'>=</span>
<a name="line-36"></a> <span class='hs-varid'>add_attr</span> <span class='hs-varid'>dtattr</span> <span class='hs-varop'>$</span> <span class='hs-varid'>math</span> <span class='hs-varop'>$</span> <span class='hs-varid'>map</span> <span class='hs-varid'>showExp</span> <span class='hs-varop'>$</span> <span class='hs-varid'>everywhere</span> <span class='hs-layout'>(</span><span class='hs-varid'>mkT</span> <span class='hs-varop'>$</span> <span class='hs-varid'>handleDownup</span> <span class='hs-varid'>dt</span><span class='hs-layout'>)</span> <span class='hs-varid'>exprs</span>
<a name="line-37"></a> <span class='hs-keyword'>where</span> <span class='hs-varid'>dtattr</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Attr</span> <span class='hs-layout'>(</span><span class='hs-varid'>unqual</span> <span class='hs-str'>"display"</span><span class='hs-layout'>)</span> <span class='hs-varid'>dt'</span>
<a name="line-38"></a> <span class='hs-varid'>dt'</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>case</span> <span class='hs-varid'>dt</span> <span class='hs-keyword'>of</span>
<a name="line-39"></a> <span class='hs-conid'>DisplayBlock</span> <span class='hs-keyglyph'>-></span> <span class='hs-str'>"block"</span>
<a name="line-40"></a> <span class='hs-conid'>DisplayInline</span> <span class='hs-keyglyph'>-></span> <span class='hs-str'>"inline"</span>
<a name="line-41"></a>
<a name="line-42"></a><a name="math"></a><span class='hs-definition'>math</span> <span class='hs-keyglyph'>::</span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>Element</span><span class='hs-keyglyph'>]</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Element</span>
<a name="line-43"></a><span class='hs-definition'>math</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>add_attr</span> <span class='hs-layout'>(</span><span class='hs-conid'>Attr</span> <span class='hs-layout'>(</span><span class='hs-varid'>unqual</span> <span class='hs-str'>"xmlns"</span><span class='hs-layout'>)</span> <span class='hs-str'>"http://www.w3.org/1998/Math/MathML"</span><span class='hs-layout'>)</span> <span class='hs-varop'>.</span> <span class='hs-varid'>unode</span> <span class='hs-str'>"math"</span> <span class='hs-varop'>.</span> <span class='hs-varid'>unode</span> <span class='hs-str'>"mrow"</span>
<a name="line-44"></a>
<a name="line-45"></a><a name="mrow"></a><span class='hs-definition'>mrow</span> <span class='hs-keyglyph'>::</span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>Element</span><span class='hs-keyglyph'>]</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Element</span>
<a name="line-46"></a><span class='hs-definition'>mrow</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>unode</span> <span class='hs-str'>"mrow"</span>
<a name="line-47"></a>
<a name="line-48"></a><span class='hs-comment'>{- Firefox seems to set spacing based on its own dictionary,
<a name="line-49"></a>- so I believe this is unnecessary.
<a name="line-50"></a>
<a name="line-51"></a>setSpacing :: String -> String -> Bool -> Element -> Element
<a name="line-52"></a>setSpacing left right stretchy elt =
<a name="line-53"></a> add_attr (Attr (unqual "lspace") left) $
<a name="line-54"></a> add_attr (Attr (unqual "rspace") right) $
<a name="line-55"></a> if stretchy
<a name="line-56"></a> then add_attr (Attr (unqual "stretchy") "true") elt
<a name="line-57"></a> else elt
<a name="line-58"></a>
<a name="line-59"></a>showSymbol (ESymbol s x) =
<a name="line-60"></a> case s of
<a name="line-61"></a> Ord x -> unode "mo" x
<a name="line-62"></a> Op x -> setSpacing "0" "0.167em" True $ unode "mo" x
<a name="line-63"></a> Bin x -> setSpacing "0.222em" "0.222em" False $ unode "mo" x
<a name="line-64"></a> Rel x -> setSpacing "0.278em" "0.278em" False $ unode "mo" x
<a name="line-65"></a> Open x -> setSpacing "0" "0" True $ unode "mo" x
<a name="line-66"></a> Close x -> setSpacing "0" "0" True $ unode "mo" x
<a name="line-67"></a> Pun x -> setSpacing "0" "0.167em" False $ unode "mo" x
<a name="line-68"></a>-}</span>
<a name="line-69"></a>
<a name="line-70"></a><a name="unaryOps"></a><span class='hs-definition'>unaryOps</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>M</span><span class='hs-varop'>.</span><span class='hs-conid'>Map</span> <span class='hs-conid'>String</span> <span class='hs-conid'>String</span>
<a name="line-71"></a><span class='hs-definition'>unaryOps</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>M</span><span class='hs-varop'>.</span><span class='hs-varid'>fromList</span>
<a name="line-72"></a> <span class='hs-keyglyph'>[</span> <span class='hs-layout'>(</span><span class='hs-str'>"\\sqrt"</span><span class='hs-layout'>,</span> <span class='hs-str'>"msqrt"</span><span class='hs-layout'>)</span>
<a name="line-73"></a> <span class='hs-layout'>,</span> <span class='hs-layout'>(</span><span class='hs-str'>"\\surd"</span><span class='hs-layout'>,</span> <span class='hs-str'>"msqrt"</span><span class='hs-layout'>)</span>
<a name="line-74"></a> <span class='hs-keyglyph'>]</span>
<a name="line-75"></a>
<a name="line-76"></a><a name="showUnary"></a><span class='hs-definition'>showUnary</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>String</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Exp</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Element</span>
<a name="line-77"></a><span class='hs-definition'>showUnary</span> <span class='hs-varid'>c</span> <span class='hs-varid'>x</span> <span class='hs-keyglyph'>=</span>
<a name="line-78"></a> <span class='hs-keyword'>case</span> <span class='hs-conid'>M</span><span class='hs-varop'>.</span><span class='hs-varid'>lookup</span> <span class='hs-varid'>c</span> <span class='hs-varid'>unaryOps</span> <span class='hs-keyword'>of</span>
<a name="line-79"></a> <span class='hs-conid'>Just</span> <span class='hs-varid'>c'</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>unode</span> <span class='hs-varid'>c'</span> <span class='hs-layout'>(</span><span class='hs-varid'>showExp</span> <span class='hs-varid'>x</span><span class='hs-layout'>)</span>
<a name="line-80"></a> <span class='hs-conid'>Nothing</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>error</span> <span class='hs-varop'>$</span> <span class='hs-str'>"Unknown unary op: "</span> <span class='hs-varop'>++</span> <span class='hs-varid'>c</span>
<a name="line-81"></a>
<a name="line-82"></a><a name="binaryOps"></a><span class='hs-definition'>binaryOps</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>M</span><span class='hs-varop'>.</span><span class='hs-conid'>Map</span> <span class='hs-conid'>String</span> <span class='hs-layout'>(</span><span class='hs-keyglyph'>[</span><span class='hs-conid'>Element</span><span class='hs-keyglyph'>]</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Element</span><span class='hs-layout'>)</span>
<a name="line-83"></a><span class='hs-definition'>binaryOps</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>M</span><span class='hs-varop'>.</span><span class='hs-varid'>fromList</span>
<a name="line-84"></a> <span class='hs-keyglyph'>[</span> <span class='hs-layout'>(</span><span class='hs-str'>"\\frac"</span><span class='hs-layout'>,</span> <span class='hs-varid'>unode</span> <span class='hs-str'>"mfrac"</span><span class='hs-layout'>)</span>
<a name="line-85"></a> <span class='hs-layout'>,</span> <span class='hs-layout'>(</span><span class='hs-str'>"\\tfrac"</span><span class='hs-layout'>,</span> <span class='hs-varid'>withAttribute</span> <span class='hs-str'>"displaystyle"</span> <span class='hs-str'>"false"</span> <span class='hs-varop'>.</span>
<a name="line-86"></a> <span class='hs-varid'>unode</span> <span class='hs-str'>"mstyle"</span> <span class='hs-varop'>.</span> <span class='hs-varid'>unode</span> <span class='hs-str'>"mfrac"</span><span class='hs-layout'>)</span>
<a name="line-87"></a> <span class='hs-layout'>,</span> <span class='hs-layout'>(</span><span class='hs-str'>"\\dfrac"</span><span class='hs-layout'>,</span> <span class='hs-varid'>withAttribute</span> <span class='hs-str'>"displaystyle"</span> <span class='hs-str'>"true"</span> <span class='hs-varop'>.</span>
<a name="line-88"></a> <span class='hs-varid'>unode</span> <span class='hs-str'>"mstyle"</span> <span class='hs-varop'>.</span> <span class='hs-varid'>unode</span> <span class='hs-str'>"mfrac"</span><span class='hs-layout'>)</span>
<a name="line-89"></a> <span class='hs-layout'>,</span> <span class='hs-layout'>(</span><span class='hs-str'>"\\sqrt"</span><span class='hs-layout'>,</span> <span class='hs-varid'>unode</span> <span class='hs-str'>"mroot"</span><span class='hs-layout'>)</span>
<a name="line-90"></a> <span class='hs-layout'>,</span> <span class='hs-layout'>(</span><span class='hs-str'>"\\stackrel"</span><span class='hs-layout'>,</span> <span class='hs-varid'>unode</span> <span class='hs-str'>"mover"</span><span class='hs-layout'>)</span>
<a name="line-91"></a> <span class='hs-layout'>,</span> <span class='hs-layout'>(</span><span class='hs-str'>"\\overset"</span><span class='hs-layout'>,</span> <span class='hs-varid'>unode</span> <span class='hs-str'>"mover"</span><span class='hs-layout'>)</span>
<a name="line-92"></a> <span class='hs-layout'>,</span> <span class='hs-layout'>(</span><span class='hs-str'>"\\underset"</span><span class='hs-layout'>,</span> <span class='hs-varid'>unode</span> <span class='hs-str'>"munder"</span><span class='hs-layout'>)</span>
<a name="line-93"></a> <span class='hs-layout'>,</span> <span class='hs-layout'>(</span><span class='hs-str'>"\\binom"</span><span class='hs-layout'>,</span> <span class='hs-varid'>showBinom</span><span class='hs-layout'>)</span>
<a name="line-94"></a> <span class='hs-keyglyph'>]</span>
<a name="line-95"></a>
<a name="line-96"></a><a name="showBinom"></a><span class='hs-definition'>showBinom</span> <span class='hs-keyglyph'>::</span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>Element</span><span class='hs-keyglyph'>]</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Element</span>
<a name="line-97"></a><span class='hs-definition'>showBinom</span> <span class='hs-varid'>lst</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>unode</span> <span class='hs-str'>"mfenced"</span> <span class='hs-varop'>$</span> <span class='hs-varid'>withAttribute</span> <span class='hs-str'>"linethickness"</span> <span class='hs-str'>"0"</span> <span class='hs-varop'>$</span> <span class='hs-varid'>unode</span> <span class='hs-str'>"mfrac"</span> <span class='hs-varid'>lst</span>
<a name="line-98"></a>
<a name="line-99"></a><a name="showBinary"></a><span class='hs-definition'>showBinary</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>String</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Exp</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Exp</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Element</span>
<a name="line-100"></a><span class='hs-definition'>showBinary</span> <span class='hs-varid'>c</span> <span class='hs-varid'>x</span> <span class='hs-varid'>y</span> <span class='hs-keyglyph'>=</span>
<a name="line-101"></a> <span class='hs-keyword'>case</span> <span class='hs-conid'>M</span><span class='hs-varop'>.</span><span class='hs-varid'>lookup</span> <span class='hs-varid'>c</span> <span class='hs-varid'>binaryOps</span> <span class='hs-keyword'>of</span>
<a name="line-102"></a> <span class='hs-conid'>Just</span> <span class='hs-varid'>f</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>f</span> <span class='hs-keyglyph'>[</span><span class='hs-varid'>showExp</span> <span class='hs-varid'>x</span><span class='hs-layout'>,</span> <span class='hs-varid'>showExp</span> <span class='hs-varid'>y</span><span class='hs-keyglyph'>]</span>
<a name="line-103"></a> <span class='hs-conid'>Nothing</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>error</span> <span class='hs-varop'>$</span> <span class='hs-str'>"Unknown binary op: "</span> <span class='hs-varop'>++</span> <span class='hs-varid'>c</span>
<a name="line-104"></a>
<a name="line-105"></a><a name="spaceWidth"></a><span class='hs-definition'>spaceWidth</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>String</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Element</span>
<a name="line-106"></a><span class='hs-definition'>spaceWidth</span> <span class='hs-varid'>w</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>withAttribute</span> <span class='hs-str'>"width"</span> <span class='hs-varid'>w</span> <span class='hs-varop'>$</span> <span class='hs-varid'>unode</span> <span class='hs-str'>"mspace"</span> <span class='hs-conid'>()</span>
<a name="line-107"></a>
<a name="line-108"></a><a name="makeStretchy"></a><span class='hs-definition'>makeStretchy</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Element</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Element</span>
<a name="line-109"></a><span class='hs-definition'>makeStretchy</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>withAttribute</span> <span class='hs-str'>"stretchy"</span> <span class='hs-str'>"true"</span>
<a name="line-110"></a>
<a name="line-111"></a><a name="makeScaled"></a><span class='hs-definition'>makeScaled</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>String</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Element</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Element</span>
<a name="line-112"></a><span class='hs-definition'>makeScaled</span> <span class='hs-varid'>s</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>withAttribute</span> <span class='hs-str'>"minsize"</span> <span class='hs-varid'>s</span> <span class='hs-varop'>.</span> <span class='hs-varid'>withAttribute</span> <span class='hs-str'>"maxsize"</span> <span class='hs-varid'>s</span>
<a name="line-113"></a>
<a name="line-114"></a><a name="makeText"></a><span class='hs-definition'>makeText</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>String</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>String</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Element</span>
<a name="line-115"></a><span class='hs-definition'>makeText</span> <span class='hs-varid'>a</span> <span class='hs-varid'>s</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>if</span> <span class='hs-varid'>trailingSp</span>
<a name="line-116"></a> <span class='hs-keyword'>then</span> <span class='hs-varid'>mrow</span> <span class='hs-keyglyph'>[</span><span class='hs-varid'>s'</span><span class='hs-layout'>,</span> <span class='hs-varid'>sp</span><span class='hs-keyglyph'>]</span>
<a name="line-117"></a> <span class='hs-keyword'>else</span> <span class='hs-varid'>s'</span>
<a name="line-118"></a> <span class='hs-keyword'>where</span> <span class='hs-varid'>sp</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>spaceWidth</span> <span class='hs-str'>"0.333em"</span>
<a name="line-119"></a> <span class='hs-varid'>s'</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>withAttribute</span> <span class='hs-str'>"mathvariant"</span> <span class='hs-varid'>a</span> <span class='hs-varop'>$</span> <span class='hs-varid'>unode</span> <span class='hs-str'>"mtext"</span> <span class='hs-varid'>s</span>
<a name="line-120"></a> <span class='hs-varid'>trailingSp</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>not</span> <span class='hs-layout'>(</span><span class='hs-varid'>null</span> <span class='hs-varid'>s</span><span class='hs-layout'>)</span> <span class='hs-varop'>&&</span> <span class='hs-varid'>last</span> <span class='hs-varid'>s</span> <span class='hs-varop'>`elem`</span> <span class='hs-str'>" \t"</span>
<a name="line-121"></a>
<a name="line-122"></a><a name="makeArray"></a><span class='hs-definition'>makeArray</span> <span class='hs-keyglyph'>::</span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>Alignment</span><span class='hs-keyglyph'>]</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>ArrayLine</span><span class='hs-keyglyph'>]</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Element</span>
<a name="line-123"></a><span class='hs-definition'>makeArray</span> <span class='hs-keyword'>as</span> <span class='hs-varid'>ls</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>unode</span> <span class='hs-str'>"mtable"</span> <span class='hs-varop'>$</span>
<a name="line-124"></a> <span class='hs-varid'>map</span> <span class='hs-layout'>(</span><span class='hs-varid'>unode</span> <span class='hs-str'>"mtr"</span> <span class='hs-varop'>.</span>
<a name="line-125"></a> <span class='hs-varid'>zipWith</span> <span class='hs-layout'>(</span><span class='hs-keyglyph'>\</span><span class='hs-varid'>a</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>setAlignment</span> <span class='hs-varid'>a</span> <span class='hs-varop'>.</span> <span class='hs-varid'>unode</span> <span class='hs-str'>"mtd"</span><span class='hs-varop'>.</span> <span class='hs-varid'>map</span> <span class='hs-varid'>showExp</span><span class='hs-layout'>)</span> <span class='hs-varid'>as'</span><span class='hs-layout'>)</span> <span class='hs-varid'>ls</span>
<a name="line-126"></a> <span class='hs-keyword'>where</span> <span class='hs-varid'>setAlignment</span> <span class='hs-conid'>AlignLeft</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>withAttribute</span> <span class='hs-str'>"columnalign"</span> <span class='hs-str'>"left"</span>
<a name="line-127"></a> <span class='hs-varid'>setAlignment</span> <span class='hs-conid'>AlignRight</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>withAttribute</span> <span class='hs-str'>"columnalign"</span> <span class='hs-str'>"right"</span>
<a name="line-128"></a> <span class='hs-varid'>setAlignment</span> <span class='hs-conid'>AlignCenter</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>withAttribute</span> <span class='hs-str'>"columnalign"</span> <span class='hs-str'>"center"</span>
<a name="line-129"></a> <span class='hs-varid'>setAlignment</span> <span class='hs-conid'>AlignDefault</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>id</span>
<a name="line-130"></a> <span class='hs-varid'>as'</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>as</span> <span class='hs-varop'>++</span> <span class='hs-varid'>cycle</span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>AlignDefault</span><span class='hs-keyglyph'>]</span>
<a name="line-131"></a>
<a name="line-132"></a><a name="withAttribute"></a><span class='hs-definition'>withAttribute</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>String</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>String</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Element</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Element</span>
<a name="line-133"></a><span class='hs-definition'>withAttribute</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>add_attr</span> <span class='hs-varop'>.</span> <span class='hs-conid'>Attr</span> <span class='hs-layout'>(</span><span class='hs-varid'>unqual</span> <span class='hs-varid'>a</span><span class='hs-layout'>)</span>
<a name="line-134"></a>
<a name="line-135"></a><a name="accent"></a><span class='hs-definition'>accent</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>String</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Element</span>
<a name="line-136"></a><span class='hs-definition'>accent</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>add_attr</span> <span class='hs-layout'>(</span><span class='hs-conid'>Attr</span> <span class='hs-layout'>(</span><span class='hs-varid'>unqual</span> <span class='hs-str'>"accent"</span><span class='hs-layout'>)</span> <span class='hs-str'>"true"</span><span class='hs-layout'>)</span> <span class='hs-varop'>.</span>
<a name="line-137"></a> <span class='hs-varid'>unode</span> <span class='hs-str'>"mo"</span>
<a name="line-138"></a>
<a name="line-139"></a><a name="handleDownup"></a><span class='hs-definition'>handleDownup</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>DisplayType</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Exp</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Exp</span>
<a name="line-140"></a><span class='hs-definition'>handleDownup</span> <span class='hs-conid'>DisplayInline</span> <span class='hs-layout'>(</span><span class='hs-conid'>EDown</span> <span class='hs-varid'>x</span> <span class='hs-varid'>y</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>ESub</span> <span class='hs-varid'>x</span> <span class='hs-varid'>y</span>
<a name="line-141"></a><span class='hs-definition'>handleDownup</span> <span class='hs-conid'>DisplayBlock</span> <span class='hs-layout'>(</span><span class='hs-conid'>EDown</span> <span class='hs-varid'>x</span> <span class='hs-varid'>y</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>EUnder</span> <span class='hs-varid'>x</span> <span class='hs-varid'>y</span>
<a name="line-142"></a><span class='hs-definition'>handleDownup</span> <span class='hs-conid'>DisplayInline</span> <span class='hs-layout'>(</span><span class='hs-conid'>EUp</span> <span class='hs-varid'>x</span> <span class='hs-varid'>y</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>ESuper</span> <span class='hs-varid'>x</span> <span class='hs-varid'>y</span>
<a name="line-143"></a><span class='hs-definition'>handleDownup</span> <span class='hs-conid'>DisplayBlock</span> <span class='hs-layout'>(</span><span class='hs-conid'>EUp</span> <span class='hs-varid'>x</span> <span class='hs-varid'>y</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>EOver</span> <span class='hs-varid'>x</span> <span class='hs-varid'>y</span>
<a name="line-144"></a><span class='hs-definition'>handleDownup</span> <span class='hs-conid'>DisplayInline</span> <span class='hs-layout'>(</span><span class='hs-conid'>EDownup</span> <span class='hs-varid'>x</span> <span class='hs-varid'>y</span> <span class='hs-varid'>z</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>ESubsup</span> <span class='hs-varid'>x</span> <span class='hs-varid'>y</span> <span class='hs-varid'>z</span>
<a name="line-145"></a><span class='hs-definition'>handleDownup</span> <span class='hs-conid'>DisplayBlock</span> <span class='hs-layout'>(</span><span class='hs-conid'>EDownup</span> <span class='hs-varid'>x</span> <span class='hs-varid'>y</span> <span class='hs-varid'>z</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>EUnderover</span> <span class='hs-varid'>x</span> <span class='hs-varid'>y</span> <span class='hs-varid'>z</span>
<a name="line-146"></a><span class='hs-definition'>handleDownup</span> <span class='hs-keyword'>_</span> <span class='hs-varid'>x</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>x</span>
<a name="line-147"></a>
<a name="line-148"></a><a name="showExp"></a><span class='hs-definition'>showExp</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Exp</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Element</span>
<a name="line-149"></a><span class='hs-definition'>showExp</span> <span class='hs-varid'>e</span> <span class='hs-keyglyph'>=</span>
<a name="line-150"></a> <span class='hs-keyword'>case</span> <span class='hs-varid'>e</span> <span class='hs-keyword'>of</span>
<a name="line-151"></a> <span class='hs-conid'>ENumber</span> <span class='hs-varid'>x</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>unode</span> <span class='hs-str'>"mn"</span> <span class='hs-varid'>x</span>
<a name="line-152"></a> <span class='hs-conid'>EGrouped</span> <span class='hs-keyglyph'>[</span><span class='hs-varid'>x</span><span class='hs-keyglyph'>]</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>showExp</span> <span class='hs-varid'>x</span>
<a name="line-153"></a> <span class='hs-conid'>EGrouped</span> <span class='hs-varid'>xs</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>mrow</span> <span class='hs-varop'>$</span> <span class='hs-varid'>map</span> <span class='hs-varid'>showExp</span> <span class='hs-varid'>xs</span>
<a name="line-154"></a> <span class='hs-conid'>EIdentifier</span> <span class='hs-varid'>x</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>unode</span> <span class='hs-str'>"mi"</span> <span class='hs-varid'>x</span>
<a name="line-155"></a> <span class='hs-conid'>EMathOperator</span> <span class='hs-varid'>x</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>unode</span> <span class='hs-str'>"mi"</span> <span class='hs-varid'>x</span>
<a name="line-156"></a> <span class='hs-conid'>ESymbol</span> <span class='hs-conid'>Accent</span> <span class='hs-varid'>x</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>accent</span> <span class='hs-varid'>x</span>
<a name="line-157"></a> <span class='hs-conid'>EStretchy</span> <span class='hs-layout'>(</span><span class='hs-conid'>ESymbol</span> <span class='hs-conid'>Open</span> <span class='hs-varid'>x</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>makeStretchy</span> <span class='hs-varop'>$</span> <span class='hs-varid'>unode</span> <span class='hs-str'>"mo"</span> <span class='hs-varid'>x</span>
<a name="line-158"></a> <span class='hs-conid'>EStretchy</span> <span class='hs-layout'>(</span><span class='hs-conid'>ESymbol</span> <span class='hs-conid'>Close</span> <span class='hs-varid'>x</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>makeStretchy</span> <span class='hs-varop'>$</span> <span class='hs-varid'>unode</span> <span class='hs-str'>"mo"</span> <span class='hs-varid'>x</span>
<a name="line-159"></a> <span class='hs-conid'>ESymbol</span> <span class='hs-conid'>Open</span> <span class='hs-varid'>x</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>withAttribute</span> <span class='hs-str'>"stretchy"</span> <span class='hs-str'>"false"</span> <span class='hs-varop'>$</span> <span class='hs-varid'>unode</span> <span class='hs-str'>"mo"</span> <span class='hs-varid'>x</span>
<a name="line-160"></a> <span class='hs-conid'>ESymbol</span> <span class='hs-conid'>Close</span> <span class='hs-varid'>x</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>withAttribute</span> <span class='hs-str'>"stretchy"</span> <span class='hs-str'>"false"</span> <span class='hs-varop'>$</span> <span class='hs-varid'>unode</span> <span class='hs-str'>"mo"</span> <span class='hs-varid'>x</span>
<a name="line-161"></a> <span class='hs-conid'>ESymbol</span> <span class='hs-keyword'>_</span> <span class='hs-varid'>x</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>unode</span> <span class='hs-str'>"mo"</span> <span class='hs-varid'>x</span>
<a name="line-162"></a> <span class='hs-conid'>ESpace</span> <span class='hs-varid'>x</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>spaceWidth</span> <span class='hs-varid'>x</span>
<a name="line-163"></a> <span class='hs-conid'>EBinary</span> <span class='hs-varid'>c</span> <span class='hs-varid'>x</span> <span class='hs-varid'>y</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>showBinary</span> <span class='hs-varid'>c</span> <span class='hs-varid'>x</span> <span class='hs-varid'>y</span>
<a name="line-164"></a> <span class='hs-conid'>ESub</span> <span class='hs-varid'>x</span> <span class='hs-varid'>y</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>unode</span> <span class='hs-str'>"msub"</span> <span class='hs-varop'>$</span> <span class='hs-varid'>map</span> <span class='hs-varid'>showExp</span> <span class='hs-keyglyph'>[</span><span class='hs-varid'>x</span><span class='hs-layout'>,</span> <span class='hs-varid'>y</span><span class='hs-keyglyph'>]</span>
<a name="line-165"></a> <span class='hs-conid'>ESuper</span> <span class='hs-varid'>x</span> <span class='hs-varid'>y</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>unode</span> <span class='hs-str'>"msup"</span> <span class='hs-varop'>$</span> <span class='hs-varid'>map</span> <span class='hs-varid'>showExp</span> <span class='hs-keyglyph'>[</span><span class='hs-varid'>x</span><span class='hs-layout'>,</span> <span class='hs-varid'>y</span><span class='hs-keyglyph'>]</span>
<a name="line-166"></a> <span class='hs-conid'>ESubsup</span> <span class='hs-varid'>x</span> <span class='hs-varid'>y</span> <span class='hs-varid'>z</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>unode</span> <span class='hs-str'>"msubsup"</span> <span class='hs-varop'>$</span> <span class='hs-varid'>map</span> <span class='hs-varid'>showExp</span> <span class='hs-keyglyph'>[</span><span class='hs-varid'>x</span><span class='hs-layout'>,</span> <span class='hs-varid'>y</span><span class='hs-layout'>,</span> <span class='hs-varid'>z</span><span class='hs-keyglyph'>]</span>
<a name="line-167"></a> <span class='hs-conid'>EUnder</span> <span class='hs-varid'>x</span> <span class='hs-varid'>y</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>unode</span> <span class='hs-str'>"munder"</span> <span class='hs-varop'>$</span> <span class='hs-varid'>map</span> <span class='hs-varid'>showExp</span> <span class='hs-keyglyph'>[</span><span class='hs-varid'>x</span><span class='hs-layout'>,</span> <span class='hs-varid'>y</span><span class='hs-keyglyph'>]</span>
<a name="line-168"></a> <span class='hs-conid'>EOver</span> <span class='hs-varid'>x</span> <span class='hs-varid'>y</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>unode</span> <span class='hs-str'>"mover"</span> <span class='hs-varop'>$</span> <span class='hs-varid'>map</span> <span class='hs-varid'>showExp</span> <span class='hs-keyglyph'>[</span><span class='hs-varid'>x</span><span class='hs-layout'>,</span> <span class='hs-varid'>y</span><span class='hs-keyglyph'>]</span>
<a name="line-169"></a> <span class='hs-conid'>EUnderover</span> <span class='hs-varid'>x</span> <span class='hs-varid'>y</span> <span class='hs-varid'>z</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>unode</span> <span class='hs-str'>"munderover"</span> <span class='hs-varop'>$</span> <span class='hs-varid'>map</span> <span class='hs-varid'>showExp</span> <span class='hs-keyglyph'>[</span><span class='hs-varid'>x</span><span class='hs-layout'>,</span> <span class='hs-varid'>y</span><span class='hs-layout'>,</span> <span class='hs-varid'>z</span><span class='hs-keyglyph'>]</span>
<a name="line-170"></a> <span class='hs-conid'>EUnary</span> <span class='hs-varid'>c</span> <span class='hs-varid'>x</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>showUnary</span> <span class='hs-varid'>c</span> <span class='hs-varid'>x</span>
<a name="line-171"></a> <span class='hs-conid'>EStretchy</span> <span class='hs-varid'>x</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>makeStretchy</span> <span class='hs-varop'>$</span> <span class='hs-varid'>showExp</span> <span class='hs-varid'>x</span>
<a name="line-172"></a> <span class='hs-conid'>EScaled</span> <span class='hs-varid'>s</span> <span class='hs-varid'>x</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>makeScaled</span> <span class='hs-varid'>s</span> <span class='hs-varop'>$</span> <span class='hs-varid'>showExp</span> <span class='hs-varid'>x</span>
<a name="line-173"></a> <span class='hs-conid'>EArray</span> <span class='hs-keyword'>as</span> <span class='hs-varid'>ls</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>makeArray</span> <span class='hs-keyword'>as</span> <span class='hs-varid'>ls</span>
<a name="line-174"></a> <span class='hs-conid'>EText</span> <span class='hs-varid'>a</span> <span class='hs-varid'>s</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>makeText</span> <span class='hs-varid'>a</span> <span class='hs-varid'>s</span>
<a name="line-175"></a> <span class='hs-varid'>x</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>error</span> <span class='hs-varop'>$</span> <span class='hs-str'>"showExp encountered "</span> <span class='hs-varop'>++</span> <span class='hs-varid'>show</span> <span class='hs-varid'>x</span>
<a name="line-176"></a> <span class='hs-comment'>-- note: EUp, EDown, EDownup should be removed by handleDownup</span>
<a name="line-177"></a>
</pre></body>
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