annotate mayachemtools/docs/modules/html/code/SimpleCalcParser.html @ 0:73ae111cf86f draft

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date Wed, 20 Jan 2016 11:55:01 -0500
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1 <html>
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2 <head>
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3 <title>MayaChemTools:Code:Parsers::SimpleCalcParser.pm</title>
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4 <meta http-equiv="content-type" content="text/html;charset=utf-8">
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5 <link rel="stylesheet" type="text/css" href="../../../css/MayaChemToolsCode.css">
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6 </head>
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7 <body leftmargin="20" rightmargin="20" topmargin="10" bottommargin="10">
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8 <br/>
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9 <center>
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10 <a href="http://www.mayachemtools.org" title="MayaChemTools Home"><img src="../../../images/MayaChemToolsLogo.gif" border="0" alt="MayaChemTools"></a>
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11 </center>
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12 <br/>
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13 <pre>
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14 <a name="package-Parsers::SimpleCalcParser-"></a> 1 <span class="k">package </span><span class="i">Parsers::SimpleCalcParser</span><span class="sc">;</span>
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15 2 <span class="c">#</span>
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16 3 <span class="c"># $RCSfile: SimpleCalcParser.yy,v $</span>
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17 4 <span class="c"># $Date: 2015/02/28 20:50:55 $</span>
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18 5 <span class="c"># $Revision: 1.10 $</span>
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19 6 <span class="c">#</span>
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20 7 <span class="c"># Author: Manish Sud &lt;msud@san.rr.com&gt;</span>
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21 8 <span class="c">#</span>
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22 9 <span class="c"># Copyright (C) 2015 Manish Sud. All rights reserved.</span>
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23 10 <span class="c">#</span>
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24 11 <span class="c"># This file is part of MayaChemTools.</span>
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25 12 <span class="c">#</span>
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26 13 <span class="c"># MayaChemTools is free software; you can redistribute it and/or modify it under</span>
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27 14 <span class="c"># the terms of the GNU Lesser General Public License as published by the Free</span>
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28 15 <span class="c"># Software Foundation; either version 3 of the License, or (at your option) any</span>
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29 16 <span class="c"># later version.</span>
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30 17 <span class="c">#</span>
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31 18 <span class="c"># MayaChemTools is distributed in the hope that it will be useful, but without</span>
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32 19 <span class="c"># any warranty; without even the implied warranty of merchantability of fitness</span>
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33 20 <span class="c"># for a particular purpose. See the GNU Lesser General Public License for more</span>
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34 21 <span class="c"># details.</span>
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35 22 <span class="c">#</span>
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36 23 <span class="c"># You should have received a copy of the GNU Lesser General Public License</span>
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37 24 <span class="c"># along with MayaChemTools; if not, see &lt;http://www.gnu.org/licenses/&gt; or</span>
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38 25 <span class="c"># write to the Free Software Foundation Inc., 59 Temple Place, Suite 330,</span>
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39 26 <span class="c"># Boston, MA, 02111-1307, USA.</span>
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40 27 <span class="c">#</span>
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41 28 <span class="c">#</span>
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42 29 <span class="c"># A WORD TO THE WISE:</span>
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43 30 <span class="c">#</span>
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44 31 <span class="c"># The parser package and token table files, SimpleCalcParser.pm and</span>
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45 32 <span class="c"># SimpleCalcParser.tab.ph, are automatically generated from parser grammar</span>
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46 33 <span class="c"># definition file, SimpleCalcParser.yy, using byacc available through perl-byacc1.8</span>
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47 34 <span class="c"># modified with perl5-byacc-patches-0.5 for generation of object oriented parser:</span>
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48 35 <span class="c">#</span>
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49 36 <span class="c"># byacc -l -P -d -b SimpleCalcParser SimpleCalcParser.yy</span>
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50 37 <span class="c"># mv SimpleCalcParser.tab.pl SimpleCalcParser.pm</span>
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51 38 <span class="c">#</span>
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52 39
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53 40 <span class="k">use</span> <span class="w">Carp</span><span class="sc">;</span>
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54 41
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55 42 <span class="c"># Setup a hash map for mapping of words/letters to values...</span>
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56 43 <span class="i">%LetterToValueMap</span> = <span class="s">(</span><span class="s">)</span><span class="sc">;</span>
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57 44
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58 45 <span class="i">$NUMBER</span>=<span class="n">257</span><span class="sc">;</span>
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59 46 <span class="i">$LETTER</span>=<span class="n">258</span><span class="sc">;</span>
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60 47 <span class="i">$YYERRCODE</span>=<span class="n">256</span><span class="sc">;</span>
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61 48 <span class="i">@yylhs</span> = <span class="s">(</span> <span class="n">-1</span><span class="cm">,</span>
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64 51 <span class="s">)</span><span class="sc">;</span>
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65 52 <span class="i">@yylen</span> = <span class="s">(</span> <span class="n">2</span><span class="cm">,</span>
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81 68 <span class="s">)</span><span class="sc">;</span>
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89 76 <span class="s">)</span><span class="sc">;</span>
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90 77 <span class="i">$YYTABLESIZE</span>=<span class="n">220</span><span class="sc">;</span>
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110 97 <span class="n">0</span><span class="cm">,</span> <span class="n">0</span><span class="cm">,</span> <span class="n">0</span><span class="cm">,</span> <span class="n">0</span><span class="cm">,</span> <span class="n">0</span><span class="cm">,</span> <span class="n">0</span><span class="cm">,</span> <span class="n">0</span><span class="cm">,</span> <span class="n">0</span><span class="cm">,</span> <span class="n">0</span><span class="cm">,</span> <span class="n">0</span><span class="cm">,</span>
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137 124 <span class="n">-1</span><span class="cm">,</span> <span class="n">-1</span><span class="cm">,</span> <span class="n">-1</span><span class="cm">,</span> <span class="n">-1</span><span class="cm">,</span> <span class="n">-1</span><span class="cm">,</span> <span class="n">256</span><span class="cm">,</span> <span class="n">257</span><span class="cm">,</span> <span class="n">258</span><span class="cm">,</span> <span class="n">257</span><span class="cm">,</span> <span class="n">258</span><span class="cm">,</span>
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138 125 <span class="s">)</span><span class="sc">;</span>
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139 126 <span class="i">$YYFINAL</span>=<span class="n">1</span><span class="sc">;</span>
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140 127 <span class="c">#ifndef YYDEBUG</span>
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141 128 <span class="c">#define YYDEBUG 0</span>
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142 129 <span class="c">#endif</span>
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143 130 <span class="i">$YYMAXTOKEN</span>=<span class="n">258</span><span class="sc">;</span>
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144 131 <span class="c">#if YYDEBUG</span>
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145 132 <span class="i">@yyname</span> = <span class="s">(</span>
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146 133 <span class="q">&quot;end-of-file&quot;</span><span class="cm">,</span><span class="q">&#39;&#39;</span><span class="cm">,</span><span class="q">&#39;&#39;</span><span class="cm">,</span><span class="q">&#39;&#39;</span><span class="cm">,</span><span class="q">&#39;&#39;</span><span class="cm">,</span><span class="q">&#39;&#39;</span><span class="cm">,</span><span class="q">&#39;&#39;</span><span class="cm">,</span><span class="q">&#39;&#39;</span><span class="cm">,</span><span class="q">&#39;&#39;</span><span class="cm">,</span><span class="q">&#39;&#39;</span><span class="cm">,</span><span class="q">&quot;&#39;\\n&#39;&quot;</span><span class="cm">,</span><span class="q">&#39;&#39;</span><span class="cm">,</span><span class="q">&#39;&#39;</span><span class="cm">,</span><span class="q">&#39;&#39;</span><span class="cm">,</span><span class="q">&#39;&#39;</span><span class="cm">,</span><span class="q">&#39;&#39;</span><span class="cm">,</span><span class="q">&#39;&#39;</span><span class="cm">,</span><span class="q">&#39;&#39;</span><span class="cm">,</span><span class="q">&#39;&#39;</span><span class="cm">,</span><span class="q">&#39;&#39;</span><span class="cm">,</span><span class="q">&#39;&#39;</span><span class="cm">,</span><span class="q">&#39;&#39;</span><span class="cm">,</span><span class="q">&#39;&#39;</span><span class="cm">,</span><span class="q">&#39;&#39;</span><span class="cm">,</span><span class="q">&#39;&#39;</span><span class="cm">,</span><span class="q">&#39;&#39;</span><span class="cm">,</span><span class="q">&#39;&#39;</span><span class="cm">,</span><span class="q">&#39;&#39;</span><span class="cm">,</span><span class="q">&#39;&#39;</span><span class="cm">,</span><span class="q">&#39;&#39;</span><span class="cm">,</span><span class="q">&#39;&#39;</span><span class="cm">,</span>
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147 134 <span class="q">&#39;&#39;</span><span class="cm">,</span><span class="q">&#39;&#39;</span><span class="cm">,</span><span class="q">&#39;&#39;</span><span class="cm">,</span><span class="q">&#39;&#39;</span><span class="cm">,</span><span class="q">&#39;&#39;</span><span class="cm">,</span><span class="q">&#39;&#39;</span><span class="cm">,</span><span class="q">&quot;&#39;%&#39;&quot;</span><span class="cm">,</span><span class="q">&#39;&#39;</span><span class="cm">,</span><span class="q">&#39;&#39;</span><span class="cm">,</span><span class="q">&quot;&#39;(&#39;&quot;</span><span class="cm">,</span><span class="q">&quot;&#39;)&#39;&quot;</span><span class="cm">,</span><span class="q">&quot;&#39;*&#39;&quot;</span><span class="cm">,</span><span class="q">&quot;&#39;+&#39;&quot;</span><span class="cm">,</span><span class="q">&#39;&#39;</span><span class="cm">,</span><span class="q">&quot;&#39;-&#39;&quot;</span><span class="cm">,</span><span class="q">&#39;&#39;</span><span class="cm">,</span><span class="q">&quot;&#39;/&#39;&quot;</span><span class="cm">,</span><span class="q">&#39;&#39;</span><span class="cm">,</span><span class="q">&#39;&#39;</span><span class="cm">,</span><span class="q">&#39;&#39;</span><span class="cm">,</span><span class="q">&#39;&#39;</span><span class="cm">,</span><span class="q">&#39;&#39;</span><span class="cm">,</span><span class="q">&#39;&#39;</span><span class="cm">,</span><span class="q">&#39;&#39;</span><span class="cm">,</span><span class="q">&#39;&#39;</span><span class="cm">,</span><span class="q">&#39;&#39;</span><span class="cm">,</span>
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148 135 <span class="q">&#39;&#39;</span><span class="cm">,</span><span class="q">&#39;&#39;</span><span class="cm">,</span><span class="q">&#39;&#39;</span><span class="cm">,</span><span class="q">&#39;&#39;</span><span class="cm">,</span><span class="q">&quot;&#39;=&#39;&quot;</span><span class="cm">,</span><span class="q">&#39;&#39;</span><span class="cm">,</span><span class="q">&#39;&#39;</span><span class="cm">,</span><span class="q">&#39;&#39;</span><span class="cm">,</span><span class="q">&#39;&#39;</span><span class="cm">,</span><span class="q">&#39;&#39;</span><span class="cm">,</span><span class="q">&#39;&#39;</span><span class="cm">,</span><span class="q">&#39;&#39;</span><span class="cm">,</span><span class="q">&#39;&#39;</span><span class="cm">,</span><span class="q">&#39;&#39;</span><span class="cm">,</span><span class="q">&#39;&#39;</span><span class="cm">,</span><span class="q">&#39;&#39;</span><span class="cm">,</span><span class="q">&#39;&#39;</span><span class="cm">,</span><span class="q">&#39;&#39;</span><span class="cm">,</span><span class="q">&#39;&#39;</span><span class="cm">,</span><span class="q">&#39;&#39;</span><span class="cm">,</span><span class="q">&#39;&#39;</span><span class="cm">,</span><span class="q">&#39;&#39;</span><span class="cm">,</span><span class="q">&#39;&#39;</span><span class="cm">,</span><span class="q">&#39;&#39;</span><span class="cm">,</span><span class="q">&#39;&#39;</span><span class="cm">,</span><span class="q">&#39;&#39;</span><span class="cm">,</span><span class="q">&#39;&#39;</span><span class="cm">,</span><span class="q">&#39;&#39;</span><span class="cm">,</span><span class="q">&#39;&#39;</span><span class="cm">,</span><span class="q">&#39;&#39;</span><span class="cm">,</span><span class="q">&#39;&#39;</span><span class="cm">,</span><span class="q">&#39;&#39;</span><span class="cm">,</span><span class="q">&#39;&#39;</span><span class="cm">,</span><span class="q">&#39;&#39;</span><span class="cm">,</span><span class="q">&#39;&#39;</span><span class="cm">,</span><span class="q">&#39;&#39;</span><span class="cm">,</span><span class="q">&#39;&#39;</span><span class="cm">,</span><span class="q">&#39;&#39;</span><span class="cm">,</span>
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149 136 <span class="q">&#39;&#39;</span><span class="cm">,</span><span class="q">&#39;&#39;</span><span class="cm">,</span><span class="q">&#39;&#39;</span><span class="cm">,</span><span class="q">&#39;&#39;</span><span class="cm">,</span><span class="q">&#39;&#39;</span><span class="cm">,</span><span class="q">&#39;&#39;</span><span class="cm">,</span><span class="q">&#39;&#39;</span><span class="cm">,</span><span class="q">&#39;&#39;</span><span class="cm">,</span><span class="q">&#39;&#39;</span><span class="cm">,</span><span class="q">&#39;&#39;</span><span class="cm">,</span><span class="q">&#39;&#39;</span><span class="cm">,</span><span class="q">&#39;&#39;</span><span class="cm">,</span><span class="q">&#39;&#39;</span><span class="cm">,</span><span class="q">&#39;&#39;</span><span class="cm">,</span><span class="q">&#39;&#39;</span><span class="cm">,</span><span class="q">&#39;&#39;</span><span class="cm">,</span><span class="q">&#39;&#39;</span><span class="cm">,</span><span class="q">&#39;&#39;</span><span class="cm">,</span><span class="q">&#39;&#39;</span><span class="cm">,</span><span class="q">&#39;&#39;</span><span class="cm">,</span><span class="q">&#39;&#39;</span><span class="cm">,</span><span class="q">&#39;&#39;</span><span class="cm">,</span><span class="q">&#39;&#39;</span><span class="cm">,</span><span class="q">&#39;&#39;</span><span class="cm">,</span><span class="q">&#39;&#39;</span><span class="cm">,</span><span class="q">&#39;&#39;</span><span class="cm">,</span><span class="q">&#39;&#39;</span><span class="cm">,</span><span class="q">&#39;&#39;</span><span class="cm">,</span><span class="q">&#39;&#39;</span><span class="cm">,</span><span class="q">&#39;&#39;</span><span class="cm">,</span><span class="q">&#39;&#39;</span><span class="cm">,</span><span class="q">&#39;&#39;</span><span class="cm">,</span><span class="q">&#39;&#39;</span><span class="cm">,</span><span class="q">&#39;&#39;</span><span class="cm">,</span><span class="q">&#39;&#39;</span><span class="cm">,</span><span class="q">&#39;&#39;</span><span class="cm">,</span><span class="q">&#39;&#39;</span><span class="cm">,</span><span class="q">&#39;&#39;</span><span class="cm">,</span><span class="q">&#39;&#39;</span><span class="cm">,</span><span class="q">&#39;&#39;</span><span class="cm">,</span>
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150 137 <span class="q">&#39;&#39;</span><span class="cm">,</span><span class="q">&#39;&#39;</span><span class="cm">,</span><span class="q">&#39;&#39;</span><span class="cm">,</span><span class="q">&#39;&#39;</span><span class="cm">,</span><span class="q">&#39;&#39;</span><span class="cm">,</span><span class="q">&#39;&#39;</span><span class="cm">,</span><span class="q">&#39;&#39;</span><span class="cm">,</span><span class="q">&#39;&#39;</span><span class="cm">,</span><span class="q">&#39;&#39;</span><span class="cm">,</span><span class="q">&#39;&#39;</span><span class="cm">,</span><span class="q">&#39;&#39;</span><span class="cm">,</span><span class="q">&#39;&#39;</span><span class="cm">,</span><span class="q">&#39;&#39;</span><span class="cm">,</span><span class="q">&#39;&#39;</span><span class="cm">,</span><span class="q">&#39;&#39;</span><span class="cm">,</span><span class="q">&#39;&#39;</span><span class="cm">,</span><span class="q">&#39;&#39;</span><span class="cm">,</span><span class="q">&#39;&#39;</span><span class="cm">,</span><span class="q">&#39;&#39;</span><span class="cm">,</span><span class="q">&#39;&#39;</span><span class="cm">,</span><span class="q">&#39;&#39;</span><span class="cm">,</span><span class="q">&#39;&#39;</span><span class="cm">,</span><span class="q">&#39;&#39;</span><span class="cm">,</span><span class="q">&#39;&#39;</span><span class="cm">,</span><span class="q">&#39;&#39;</span><span class="cm">,</span><span class="q">&#39;&#39;</span><span class="cm">,</span><span class="q">&#39;&#39;</span><span class="cm">,</span><span class="q">&#39;&#39;</span><span class="cm">,</span><span class="q">&#39;&#39;</span><span class="cm">,</span><span class="q">&#39;&#39;</span><span class="cm">,</span><span class="q">&#39;&#39;</span><span class="cm">,</span><span class="q">&#39;&#39;</span><span class="cm">,</span><span class="q">&#39;&#39;</span><span class="cm">,</span><span class="q">&#39;&#39;</span><span class="cm">,</span><span class="q">&#39;&#39;</span><span class="cm">,</span><span class="q">&#39;&#39;</span><span class="cm">,</span><span class="q">&#39;&#39;</span><span class="cm">,</span><span class="q">&#39;&#39;</span><span class="cm">,</span><span class="q">&#39;&#39;</span><span class="cm">,</span><span class="q">&#39;&#39;</span><span class="cm">,</span>
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151 138 <span class="q">&#39;&#39;</span><span class="cm">,</span><span class="q">&#39;&#39;</span><span class="cm">,</span><span class="q">&#39;&#39;</span><span class="cm">,</span><span class="q">&#39;&#39;</span><span class="cm">,</span><span class="q">&#39;&#39;</span><span class="cm">,</span><span class="q">&#39;&#39;</span><span class="cm">,</span><span class="q">&#39;&#39;</span><span class="cm">,</span><span class="q">&#39;&#39;</span><span class="cm">,</span><span class="q">&#39;&#39;</span><span class="cm">,</span><span class="q">&#39;&#39;</span><span class="cm">,</span><span class="q">&#39;&#39;</span><span class="cm">,</span><span class="q">&#39;&#39;</span><span class="cm">,</span><span class="q">&#39;&#39;</span><span class="cm">,</span><span class="q">&#39;&#39;</span><span class="cm">,</span><span class="q">&#39;&#39;</span><span class="cm">,</span><span class="q">&#39;&#39;</span><span class="cm">,</span><span class="q">&#39;&#39;</span><span class="cm">,</span><span class="q">&#39;&#39;</span><span class="cm">,</span><span class="q">&#39;&#39;</span><span class="cm">,</span><span class="q">&#39;&#39;</span><span class="cm">,</span><span class="q">&#39;&#39;</span><span class="cm">,</span><span class="q">&#39;&#39;</span><span class="cm">,</span><span class="q">&#39;&#39;</span><span class="cm">,</span><span class="q">&#39;&#39;</span><span class="cm">,</span><span class="q">&#39;&#39;</span><span class="cm">,</span><span class="q">&#39;&#39;</span><span class="cm">,</span><span class="q">&#39;&#39;</span><span class="cm">,</span><span class="q">&#39;&#39;</span><span class="cm">,</span><span class="q">&#39;&#39;</span><span class="cm">,</span><span class="q">&#39;&#39;</span><span class="cm">,</span><span class="q">&#39;&#39;</span><span class="cm">,</span><span class="q">&#39;&#39;</span><span class="cm">,</span><span class="q">&#39;&#39;</span><span class="cm">,</span><span class="q">&#39;&#39;</span><span class="cm">,</span><span class="q">&#39;&#39;</span><span class="cm">,</span><span class="q">&#39;&#39;</span><span class="cm">,</span><span class="q">&#39;&#39;</span><span class="cm">,</span><span class="q">&#39;&#39;</span><span class="cm">,</span><span class="q">&#39;&#39;</span><span class="cm">,</span><span class="q">&#39;&#39;</span><span class="cm">,</span>
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152 139 <span class="q">&#39;&#39;</span><span class="cm">,</span><span class="q">&#39;&#39;</span><span class="cm">,</span><span class="q">&#39;&#39;</span><span class="cm">,</span><span class="q">&#39;&#39;</span><span class="cm">,</span><span class="q">&#39;&#39;</span><span class="cm">,</span><span class="q">&#39;&#39;</span><span class="cm">,</span><span class="q">&#39;&#39;</span><span class="cm">,</span><span class="q">&#39;&#39;</span><span class="cm">,</span><span class="q">&#39;&#39;</span><span class="cm">,</span><span class="q">&#39;&#39;</span><span class="cm">,</span><span class="q">&#39;&#39;</span><span class="cm">,</span><span class="q">&#39;&#39;</span><span class="cm">,</span><span class="q">&#39;&#39;</span><span class="cm">,</span><span class="q">&#39;&#39;</span><span class="cm">,</span><span class="q">&#39;&#39;</span><span class="cm">,</span><span class="q">&#39;&#39;</span><span class="cm">,</span><span class="q">&#39;&#39;</span><span class="cm">,</span><span class="q">&#39;&#39;</span><span class="cm">,</span><span class="q">&#39;&#39;</span><span class="cm">,</span><span class="q">&#39;&#39;</span><span class="cm">,</span><span class="q">&#39;&#39;</span><span class="cm">,</span><span class="q">&#39;&#39;</span><span class="cm">,</span><span class="q">&#39;&#39;</span><span class="cm">,</span><span class="q">&#39;&#39;</span><span class="cm">,</span><span class="q">&#39;&#39;</span><span class="cm">,</span><span class="q">&#39;&#39;</span><span class="cm">,</span><span class="q">&#39;&#39;</span><span class="cm">,</span><span class="q">&#39;&#39;</span><span class="cm">,</span><span class="q">&#39;&#39;</span><span class="cm">,</span><span class="q">&#39;&#39;</span><span class="cm">,</span><span class="q">&#39;&#39;</span><span class="cm">,</span><span class="q">&#39;&#39;</span><span class="cm">,</span><span class="q">&#39;&#39;</span><span class="cm">,</span><span class="q">&#39;&#39;</span><span class="cm">,</span><span class="q">&#39;&#39;</span><span class="cm">,</span><span class="q">&#39;&#39;</span><span class="cm">,</span><span class="q">&#39;&#39;</span><span class="cm">,</span><span class="q">&#39;&#39;</span><span class="cm">,</span><span class="q">&#39;&#39;</span><span class="cm">,</span><span class="q">&#39;&#39;</span><span class="cm">,</span>
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153 140 <span class="q">&#39;&#39;</span><span class="cm">,</span><span class="q">&#39;&#39;</span><span class="cm">,</span><span class="q">&quot;NUMBER&quot;</span><span class="cm">,</span><span class="q">&quot;LETTER&quot;</span><span class="cm">,</span>
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154 141 <span class="s">)</span><span class="sc">;</span>
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155 142 <span class="i">@yyrule</span> = <span class="s">(</span>
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156 143 <span class="q">&quot;\$accept : list&quot;</span><span class="cm">,</span>
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157 144 <span class="q">&quot;list :&quot;</span><span class="cm">,</span>
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158 145 <span class="q">&quot;list : list stat &#39;\\n&#39;&quot;</span><span class="cm">,</span>
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159 146 <span class="q">&quot;list : list error &#39;\\n&#39;&quot;</span><span class="cm">,</span>
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160 147 <span class="q">&quot;stat : expr&quot;</span><span class="cm">,</span>
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161 148 <span class="q">&quot;stat : LETTER &#39;=&#39; expr&quot;</span><span class="cm">,</span>
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162 149 <span class="q">&quot;expr : &#39;(&#39; expr &#39;)&#39;&quot;</span><span class="cm">,</span>
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163 150 <span class="q">&quot;expr : expr &#39;+&#39; expr&quot;</span><span class="cm">,</span>
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164 151 <span class="q">&quot;expr : expr &#39;-&#39; expr&quot;</span><span class="cm">,</span>
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165 152 <span class="q">&quot;expr : expr &#39;*&#39; expr&quot;</span><span class="cm">,</span>
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166 153 <span class="q">&quot;expr : expr &#39;/&#39; expr&quot;</span><span class="cm">,</span>
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167 154 <span class="q">&quot;expr : expr &#39;%&#39; expr&quot;</span><span class="cm">,</span>
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168 155 <span class="q">&quot;expr : NUMBER&quot;</span><span class="cm">,</span>
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169 156 <span class="q">&quot;expr : LETTER&quot;</span><span class="cm">,</span>
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170 157 <span class="s">)</span><span class="sc">;</span>
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171 158 <span class="c">#endif</span>
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172 159
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173 <a name="yyclearin-"></a> 160 <span class="k">sub </span><span class="m">yyclearin</span> <span class="s">{</span> <span class="i">$_</span>[<span class="n">0</span>]-&gt;{<span class="q">&#39;yychar&#39;</span>} = <span class="n">-1</span><span class="sc">;</span> <span class="s">}</span>
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174 161
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175 <a name="yyerrok-"></a> 162 <span class="k">sub </span><span class="m">yyerrok</span> <span class="s">{</span> <span class="i">$_</span>[<span class="n">0</span>]-&gt;{<span class="q">&#39;yyerrflag&#39;</span>} = <span class="n">0</span><span class="sc">;</span> <span class="s">}</span>
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176 163
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177 <a name="new-"></a> 164 <span class="k">sub </span><span class="m">new</span> <span class="s">{</span>
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178 165 <span class="k">my</span> <span class="i">$p</span> = <span class="s">{</span><span class="q">&#39;yylex&#39;</span> <span class="cm">=&gt;</span> <span class="i">$_</span>[<span class="n">1</span>]<span class="cm">,</span> <span class="q">&#39;yyerror&#39;</span> <span class="cm">=&gt;</span> <span class="i">$_</span>[<span class="n">2</span>]<span class="cm">,</span> <span class="q">&#39;yydebug&#39;</span> <span class="cm">=&gt;</span> <span class="i">$_</span>[<span class="n">3</span>]<span class="s">}</span><span class="sc">;</span>
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179 166 <span class="k">bless</span> <span class="i">$p</span><span class="cm">,</span> <span class="i">$_</span>[<span class="n">0</span>]<span class="sc">;</span>
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180 167 <span class="s">}</span>
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181 168
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182 <a name="YYERROR-"></a> 169 <span class="k">sub </span><span class="m">YYERROR</span> <span class="s">{</span> ++<span class="i">$_</span>[<span class="n">0</span>]-&gt;{<span class="q">&#39;yynerrs&#39;</span>}<span class="sc">;</span> <span class="i">$_</span>[<span class="n">0</span>]<span class="i">-&gt;yy_err_recover</span><span class="sc">;</span> <span class="s">}</span>
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183 170
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184 <a name="yy_err_recover-"></a> 171 <span class="k">sub </span><span class="m">yy_err_recover</span> <span class="s">{</span>
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185 172 <span class="c">#</span>
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186 173 <span class="c"># msud@san.rr.com:</span>
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187 174 <span class="c">#</span>
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188 175 <span class="c"># Turn off &quot;exiting&quot; warning to suppress the following warning at &quot;next yyloop&quot;:</span>
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189 176 <span class="c">#</span>
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190 177 <span class="c"># Exiting subroutine via next at &lt;LineNum&gt;</span>
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191 178 <span class="c">#</span>
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192 179 <span class="c"># The code does work as expected with or without turning off the warning.</span>
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193 180 <span class="c"># This method is invoked in yyparse method directly or indirectly in another</span>
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194 181 <span class="c"># method and Perl compilers ends up finding &quot;yyloop&quot; as the nearst enclosure</span>
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195 182 <span class="c"># label.</span>
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196 183 <span class="c">#</span>
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197 184 <span class="k">no</span> <span class="w">warnings</span> <span class="q">qw(exiting)</span><span class="sc">;</span>
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198 185
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199 186 <span class="k">my</span> <span class="s">(</span><span class="i">$p</span><span class="s">)</span> = <span class="i">@_</span><span class="sc">;</span>
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200 187 <span class="k">if</span> <span class="s">(</span><span class="i">$p</span>-&gt;{<span class="q">&#39;yyerrflag&#39;</span>} &lt; <span class="n">3</span><span class="s">)</span>
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201 188 <span class="s">{</span>
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202 189 <span class="i">$p</span>-&gt;{<span class="q">&#39;yyerrflag&#39;</span>} = <span class="n">3</span><span class="sc">;</span>
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203 190 <span class="k">while</span> <span class="s">(</span><span class="n">1</span><span class="s">)</span>
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204 191 <span class="s">{</span>
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205 192 <span class="k">if</span> <span class="s">(</span><span class="s">(</span><span class="i">$p</span>-&gt;{<span class="q">&#39;yyn&#39;</span>} = <span class="i">$yysindex</span>[<span class="i">$p</span>-&gt;{<span class="q">&#39;yyss&#39;</span>}-&gt;[<span class="i">$p</span>-&gt;{<span class="q">&#39;yyssp&#39;</span>}]]<span class="s">)</span> &amp;&amp;
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206 193 <span class="s">(</span><span class="i">$p</span>-&gt;{<span class="q">&#39;yyn&#39;</span>} += <span class="i">$YYERRCODE</span><span class="s">)</span> &gt;= <span class="n">0</span> &amp;&amp;
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207 194 <span class="i">$p</span>-&gt;{<span class="q">&#39;yyn&#39;</span>} &lt; <span class="i">@yycheck</span> &amp;&amp;
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208 195 <span class="i">$yycheck</span>[<span class="i">$p</span>-&gt;{<span class="q">&#39;yyn&#39;</span>}] == <span class="i">$YYERRCODE</span><span class="s">)</span>
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209 196 <span class="s">{</span>
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210 197 <span class="k">warn</span><span class="s">(</span><span class="q">&quot;yydebug: state &quot;</span> .
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211 198 <span class="i">$p</span>-&gt;{<span class="q">&#39;yyss&#39;</span>}-&gt;[<span class="i">$p</span>-&gt;{<span class="q">&#39;yyssp&#39;</span>}] .
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212 199 <span class="q">&quot;, error recovery shifting to state&quot;</span> .
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213 200 <span class="i">$yytable</span>[<span class="i">$p</span>-&gt;{<span class="q">&#39;yyn&#39;</span>}] . <span class="q">&quot;\n&quot;</span><span class="s">)</span>
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214 201 <span class="k">if</span> <span class="i">$p</span>-&gt;{<span class="q">&#39;yydebug&#39;</span>}<span class="sc">;</span>
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215 202 <span class="i">$p</span>-&gt;{<span class="q">&#39;yyss&#39;</span>}-&gt;[++<span class="i">$p</span>-&gt;{<span class="q">&#39;yyssp&#39;</span>}] =
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216 203 <span class="i">$p</span>-&gt;{<span class="q">&#39;yystate&#39;</span>} = <span class="i">$yytable</span>[<span class="i">$p</span>-&gt;{<span class="q">&#39;yyn&#39;</span>}]<span class="sc">;</span>
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217 204 <span class="i">$p</span>-&gt;{<span class="q">&#39;yyvs&#39;</span>}-&gt;[++<span class="i">$p</span>-&gt;{<span class="q">&#39;yyvsp&#39;</span>}] = <span class="i">$p</span>-&gt;{<span class="q">&#39;yylval&#39;</span>}<span class="sc">;</span>
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218 205 <span class="k">next</span> <span class="j">yyloop</span><span class="sc">;</span>
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219 206 <span class="s">}</span>
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220 207 <span class="k">else</span>
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221 208 <span class="s">{</span>
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222 209 <span class="k">warn</span><span class="s">(</span><span class="q">&quot;yydebug: error recovery discarding state &quot;</span>.
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223 210 <span class="i">$p</span>-&gt;{<span class="q">&#39;yyss&#39;</span>}-&gt;[<span class="i">$p</span>-&gt;{<span class="q">&#39;yyssp&#39;</span>}]. <span class="q">&quot;\n&quot;</span><span class="s">)</span>
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224 211 <span class="k">if</span> <span class="i">$p</span>-&gt;{<span class="q">&#39;yydebug&#39;</span>}<span class="sc">;</span>
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225 212 <span class="k">return</span><span class="s">(</span><span class="k">undef</span><span class="s">)</span> <span class="k">if</span> <span class="i">$p</span>-&gt;{<span class="q">&#39;yyssp&#39;</span>} &lt;= <span class="n">0</span><span class="sc">;</span>
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226 213 --<span class="i">$p</span>-&gt;{<span class="q">&#39;yyssp&#39;</span>}<span class="sc">;</span>
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227 214 --<span class="i">$p</span>-&gt;{<span class="q">&#39;yyvsp&#39;</span>}<span class="sc">;</span>
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228 215 <span class="s">}</span>
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229 216 <span class="s">}</span>
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230 217 <span class="s">}</span>
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231 218 <span class="k">else</span>
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232 219 <span class="s">{</span>
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233 220 <span class="k">return</span> <span class="s">(</span><span class="k">undef</span><span class="s">)</span> <span class="k">if</span> <span class="i">$p</span>-&gt;{<span class="q">&#39;yychar&#39;</span>} == <span class="n">0</span><span class="sc">;</span>
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234 221 <span class="k">if</span> <span class="s">(</span><span class="i">$p</span>-&gt;{<span class="q">&#39;yydebug&#39;</span>}<span class="s">)</span>
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235 222 <span class="s">{</span>
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236 223 <span class="i">$p</span>-&gt;{<span class="q">&#39;yys&#39;</span>} = <span class="q">&#39;&#39;</span><span class="sc">;</span>
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237 224 <span class="k">if</span> <span class="s">(</span><span class="i">$p</span>-&gt;{<span class="q">&#39;yychar&#39;</span>} &lt;= <span class="i">$YYMAXTOKEN</span><span class="s">)</span> <span class="s">{</span> <span class="i">$p</span>-&gt;{<span class="q">&#39;yys&#39;</span>} =
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238 225 <span class="i">$yyname</span>[<span class="i">$p</span>-&gt;{<span class="q">&#39;yychar&#39;</span>}]<span class="sc">;</span> <span class="s">}</span>
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239 226 <span class="k">if</span> <span class="s">(</span>!<span class="i">$p</span>-&gt;{<span class="q">&#39;yys&#39;</span>}<span class="s">)</span> <span class="s">{</span> <span class="i">$p</span>-&gt;{<span class="q">&#39;yys&#39;</span>} = <span class="q">&#39;illegal-symbol&#39;</span><span class="sc">;</span> <span class="s">}</span>
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240 227 <span class="k">warn</span><span class="s">(</span><span class="q">&quot;yydebug: state &quot;</span> . <span class="i">$p</span>-&gt;{<span class="q">&#39;yystate&#39;</span>} .
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241 228 <span class="q">&quot;, error recovery discards &quot;</span> .
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242 229 <span class="q">&quot;token &quot;</span> . <span class="i">$p</span>-&gt;{<span class="q">&#39;yychar&#39;</span>} . <span class="q">&quot;(&quot;</span> .
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243 230 <span class="i">$p</span>-&gt;{<span class="q">&#39;yys&#39;</span>} . <span class="q">&quot;)\n&quot;</span><span class="s">)</span><span class="sc">;</span>
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244 231 <span class="s">}</span>
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245 232 <span class="i">$p</span>-&gt;{<span class="q">&#39;yychar&#39;</span>} = <span class="n">-1</span><span class="sc">;</span>
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246 233 <span class="k">next</span> <span class="j">yyloop</span><span class="sc">;</span>
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247 234 <span class="s">}</span>
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248 235 <span class="n">0</span><span class="sc">;</span>
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249 236 <span class="s">}</span> <span class="c"># yy_err_recover</span>
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250 237
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251 <a name="yyparse-"></a> 238 <span class="k">sub </span><span class="m">yyparse</span> <span class="s">{</span>
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252 239 <span class="k">my</span> <span class="s">(</span><span class="i">$p</span><span class="cm">,</span> <span class="i">$s</span><span class="s">)</span> = <span class="i">@_</span><span class="sc">;</span>
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253 240 <span class="k">if</span> <span class="s">(</span><span class="i">$p</span>-&gt;{<span class="q">&#39;yys&#39;</span>} = <span class="i">$ENV</span>{<span class="q">&#39;YYDEBUG&#39;</span>}<span class="s">)</span>
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254 241 <span class="s">{</span>
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255 242 <span class="i">$p</span>-&gt;{<span class="q">&#39;yydebug&#39;</span>} = <span class="k">int</span><span class="s">(</span><span class="i">$1</span><span class="s">)</span> <span class="k">if</span> <span class="i">$p</span>-&gt;{<span class="q">&#39;yys&#39;</span>} =~ <span class="q">/^(\d)/</span><span class="sc">;</span>
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256 243 <span class="s">}</span>
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257 244
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258 245 <span class="i">$p</span>-&gt;{<span class="q">&#39;yynerrs&#39;</span>} = <span class="n">0</span><span class="sc">;</span>
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259 246 <span class="i">$p</span>-&gt;{<span class="q">&#39;yyerrflag&#39;</span>} = <span class="n">0</span><span class="sc">;</span>
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260 247 <span class="i">$p</span>-&gt;{<span class="q">&#39;yychar&#39;</span>} = <span class="s">(</span><span class="n">-1</span><span class="s">)</span><span class="sc">;</span>
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261 248
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262 249 <span class="i">$p</span>-&gt;{<span class="q">&#39;yyssp&#39;</span>} = <span class="n">0</span><span class="sc">;</span>
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263 250 <span class="i">$p</span>-&gt;{<span class="q">&#39;yyvsp&#39;</span>} = <span class="n">0</span><span class="sc">;</span>
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264 251 <span class="i">$p</span>-&gt;{<span class="q">&#39;yyss&#39;</span>}-&gt;[<span class="i">$p</span>-&gt;{<span class="q">&#39;yyssp&#39;</span>}] = <span class="i">$p</span>-&gt;{<span class="q">&#39;yystate&#39;</span>} = <span class="n">0</span><span class="sc">;</span>
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265 252
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266 253 <span class="j">yyloop:</span> <span class="k">while</span><span class="s">(</span><span class="n">1</span><span class="s">)</span>
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267 254 <span class="s">{</span>
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268 255 <span class="j">yyreduce:</span> <span class="s">{</span>
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269 256 <span class="k">last</span> <span class="j">yyreduce</span> <span class="k">if</span> <span class="s">(</span><span class="i">$p</span>-&gt;{<span class="q">&#39;yyn&#39;</span>} = <span class="i">$yydefred</span>[<span class="i">$p</span>-&gt;{<span class="q">&#39;yystate&#39;</span>}]<span class="s">)</span><span class="sc">;</span>
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270 257 <span class="k">if</span> <span class="s">(</span><span class="i">$p</span>-&gt;{<span class="q">&#39;yychar&#39;</span>} &lt; <span class="n">0</span><span class="s">)</span>
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271 258 <span class="s">{</span>
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272 259 <span class="k">if</span> <span class="s">(</span><span class="s">(</span><span class="s">(</span><span class="i">$p</span>-&gt;{<span class="q">&#39;yychar&#39;</span>}<span class="cm">,</span> <span class="i">$p</span>-&gt;{<span class="q">&#39;yylval&#39;</span>}<span class="s">)</span> =
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273 260 <span class="i">&amp;</span>{<span class="i">$p</span>-&gt;{<span class="q">&#39;yylex&#39;</span>}}<span class="s">(</span><span class="i">$s</span><span class="s">)</span><span class="s">)</span> &lt; <span class="n">0</span><span class="s">)</span> <span class="s">{</span> <span class="i">$p</span>-&gt;{<span class="q">&#39;yychar&#39;</span>} = <span class="n">0</span><span class="sc">;</span> <span class="s">}</span>
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274 261 <span class="k">if</span> <span class="s">(</span><span class="i">$p</span>-&gt;{<span class="q">&#39;yydebug&#39;</span>}<span class="s">)</span>
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275 262 <span class="s">{</span>
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276 263 <span class="i">$p</span>-&gt;{<span class="q">&#39;yys&#39;</span>} = <span class="q">&#39;&#39;</span><span class="sc">;</span>
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277 264 <span class="k">if</span> <span class="s">(</span><span class="i">$p</span>-&gt;{<span class="q">&#39;yychar&#39;</span>} &lt;= <span class="i">$#yyname</span><span class="s">)</span>
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278 265 <span class="s">{</span> <span class="i">$p</span>-&gt;{<span class="q">&#39;yys&#39;</span>} = <span class="i">$yyname</span>[<span class="i">$p</span>-&gt;{<span class="q">&#39;yychar&#39;</span>}]<span class="sc">;</span> <span class="s">}</span>
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279 266 <span class="k">if</span> <span class="s">(</span>!<span class="i">$p</span>-&gt;{<span class="q">&#39;yys&#39;</span>}<span class="s">)</span> <span class="s">{</span> <span class="i">$p</span>-&gt;{<span class="q">&#39;yys&#39;</span>} = <span class="q">&#39;illegal-symbol&#39;</span><span class="sc">;</span> <span class="s">}</span><span class="sc">;</span>
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280 267 <span class="k">warn</span><span class="s">(</span><span class="q">&quot;yydebug: state &quot;</span> . <span class="i">$p</span>-&gt;{<span class="q">&#39;yystate&#39;</span>} .
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281 268 <span class="q">&quot;, reading &quot;</span> . <span class="i">$p</span>-&gt;{<span class="q">&#39;yychar&#39;</span>} . <span class="q">&quot; (&quot;</span> .
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282 269 <span class="i">$p</span>-&gt;{<span class="q">&#39;yys&#39;</span>} . <span class="q">&quot;)\n&quot;</span><span class="s">)</span><span class="sc">;</span>
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283 270 <span class="s">}</span>
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284 271 <span class="s">}</span>
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285 272 <span class="k">if</span> <span class="s">(</span><span class="s">(</span><span class="i">$p</span>-&gt;{<span class="q">&#39;yyn&#39;</span>} = <span class="i">$yysindex</span>[<span class="i">$p</span>-&gt;{<span class="q">&#39;yystate&#39;</span>}]<span class="s">)</span> &amp;&amp;
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286 273 <span class="s">(</span><span class="i">$p</span>-&gt;{<span class="q">&#39;yyn&#39;</span>} += <span class="i">$p</span>-&gt;{<span class="q">&#39;yychar&#39;</span>}<span class="s">)</span> &gt;= <span class="n">0</span> &amp;&amp;
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287 274 <span class="i">$yycheck</span>[<span class="i">$p</span>-&gt;{<span class="q">&#39;yyn&#39;</span>}] == <span class="i">$p</span>-&gt;{<span class="q">&#39;yychar&#39;</span>}<span class="s">)</span>
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288 275 <span class="s">{</span>
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289 276 <span class="k">warn</span><span class="s">(</span><span class="q">&quot;yydebug: state &quot;</span> . <span class="i">$p</span>-&gt;{<span class="q">&#39;yystate&#39;</span>} .
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290 277 <span class="q">&quot;, shifting to state &quot;</span> .
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291 278 <span class="i">$yytable</span>[<span class="i">$p</span>-&gt;{<span class="q">&#39;yyn&#39;</span>}] . <span class="q">&quot;\n&quot;</span><span class="s">)</span> <span class="k">if</span> <span class="i">$p</span>-&gt;{<span class="q">&#39;yydebug&#39;</span>}<span class="sc">;</span>
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292 279 <span class="i">$p</span>-&gt;{<span class="q">&#39;yyss&#39;</span>}-&gt;[++<span class="i">$p</span>-&gt;{<span class="q">&#39;yyssp&#39;</span>}] = <span class="i">$p</span>-&gt;{<span class="q">&#39;yystate&#39;</span>} =
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293 280 <span class="i">$yytable</span>[<span class="i">$p</span>-&gt;{<span class="q">&#39;yyn&#39;</span>}]<span class="sc">;</span>
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294 281 <span class="i">$p</span>-&gt;{<span class="q">&#39;yyvs&#39;</span>}-&gt;[++<span class="i">$p</span>-&gt;{<span class="q">&#39;yyvsp&#39;</span>}] = <span class="i">$p</span>-&gt;{<span class="q">&#39;yylval&#39;</span>}<span class="sc">;</span>
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295 282 <span class="i">$p</span>-&gt;{<span class="q">&#39;yychar&#39;</span>} = <span class="s">(</span><span class="n">-1</span><span class="s">)</span><span class="sc">;</span>
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296 283 --<span class="i">$p</span>-&gt;{<span class="q">&#39;yyerrflag&#39;</span>} <span class="k">if</span> <span class="i">$p</span>-&gt;{<span class="q">&#39;yyerrflag&#39;</span>} &gt; <span class="n">0</span><span class="sc">;</span>
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297 284 <span class="k">next</span> <span class="j">yyloop</span><span class="sc">;</span>
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298 285 <span class="s">}</span>
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299 286 <span class="k">if</span> <span class="s">(</span><span class="s">(</span><span class="i">$p</span>-&gt;{<span class="q">&#39;yyn&#39;</span>} = <span class="i">$yyrindex</span>[<span class="i">$p</span>-&gt;{<span class="q">&#39;yystate&#39;</span>}]<span class="s">)</span> &amp;&amp;
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300 287 <span class="s">(</span><span class="i">$p</span>-&gt;{<span class="q">&#39;yyn&#39;</span>} += <span class="i">$p</span>-&gt;{<span class="q">&#39;yychar&#39;</span>}<span class="s">)</span> &gt;= <span class="n">0</span> &amp;&amp;
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301 288 <span class="i">$yycheck</span>[<span class="i">$p</span>-&gt;{<span class="q">&#39;yyn&#39;</span>}] == <span class="i">$p</span>-&gt;{<span class="q">&#39;yychar&#39;</span>}<span class="s">)</span>
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302 289 <span class="s">{</span>
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303 290 <span class="i">$p</span>-&gt;{<span class="q">&#39;yyn&#39;</span>} = <span class="i">$yytable</span>[<span class="i">$p</span>-&gt;{<span class="q">&#39;yyn&#39;</span>}]<span class="sc">;</span>
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304 291 <span class="k">last</span> <span class="j">yyreduce</span><span class="sc">;</span>
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305 292 <span class="s">}</span>
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306 293 <span class="k">if</span> <span class="s">(</span>! <span class="i">$p</span>-&gt;{<span class="q">&#39;yyerrflag&#39;</span>}<span class="s">)</span> <span class="s">{</span>
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307 294 <span class="k">if</span> <span class="s">(</span> <span class="s">(</span><span class="k">defined</span><span class="s">(</span><span class="i">$EOI</span><span class="s">)</span> &amp;&amp; <span class="i">$p</span>-&gt;{<span class="q">&#39;yychar&#39;</span>} == <span class="i">$EOI</span><span class="s">)</span> || <span class="s">(</span><span class="i">$p</span>-&gt;{<span class="q">&#39;yychar&#39;</span>} == <span class="n">0</span><span class="s">)</span> <span class="s">)</span> <span class="s">{</span>
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308 295 <span class="i">&amp;</span>{<span class="i">$p</span>-&gt;{<span class="q">&#39;yyerror&#39;</span>}}<span class="s">(</span><span class="q">&quot;syntax error at or near the end of input text&quot;</span><span class="cm">,</span> <span class="i">$s</span><span class="s">)</span><span class="sc">;</span>
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309 296 <span class="s">}</span>
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310 297 <span class="k">else</span> <span class="s">{</span>
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311 298 <span class="i">&amp;</span>{<span class="i">$p</span>-&gt;{<span class="q">&#39;yyerror&#39;</span>}}<span class="s">(</span><span class="q">&quot;syntax error at or near input text: &#39;$p-&gt;{&#39;yylval&#39;}&#39;&quot;</span><span class="cm">,</span> <span class="i">$s</span><span class="s">)</span><span class="sc">;</span>
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312 299 <span class="s">}</span>
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313 300 ++<span class="i">$p</span>-&gt;{<span class="q">&#39;yynerrs&#39;</span>}<span class="sc">;</span>
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314 301 <span class="s">}</span>
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315 302 <span class="k">return</span><span class="s">(</span><span class="k">undef</span><span class="s">)</span> <span class="k">if</span> <span class="i">$p</span><span class="i">-&gt;yy_err_recover</span><span class="sc">;</span>
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316 303 <span class="s">}</span> <span class="c"># yyreduce</span>
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317 304 <span class="k">warn</span><span class="s">(</span><span class="q">&quot;yydebug: state &quot;</span> . <span class="i">$p</span>-&gt;{<span class="q">&#39;yystate&#39;</span>} .
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318 305 <span class="q">&quot;, reducing by rule &quot;</span> .
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319 306 <span class="i">$p</span>-&gt;{<span class="q">&#39;yyn&#39;</span>} . <span class="q">&quot; (&quot;</span> . <span class="i">$yyrule</span>[<span class="i">$p</span>-&gt;{<span class="q">&#39;yyn&#39;</span>}] .
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320 307 <span class="q">&quot;)\n&quot;</span><span class="s">)</span> <span class="k">if</span> <span class="i">$p</span>-&gt;{<span class="q">&#39;yydebug&#39;</span>}<span class="sc">;</span>
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321 308 <span class="i">$p</span>-&gt;{<span class="q">&#39;yym&#39;</span>} = <span class="i">$yylen</span>[<span class="i">$p</span>-&gt;{<span class="q">&#39;yyn&#39;</span>}]<span class="sc">;</span>
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322 309 <span class="i">$p</span>-&gt;{<span class="q">&#39;yyval&#39;</span>} = <span class="i">$p</span>-&gt;{<span class="q">&#39;yyvs&#39;</span>}-&gt;[<span class="i">$p</span>-&gt;{<span class="q">&#39;yyvsp&#39;</span>}+<span class="n">1</span>-<span class="i">$p</span>-&gt;{<span class="q">&#39;yym&#39;</span>}]<span class="sc">;</span>
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323 310
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324 311 <span class="k">if</span> <span class="s">(</span><span class="i">$p</span>-&gt;{<span class="q">&#39;yyn&#39;</span>} == <span class="n">2</span><span class="s">)</span> <span class="s">{</span>
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325 312 <span class="s">{</span> <span class="i">$p</span>-&gt;{<span class="q">&#39;yyval&#39;</span>} = <span class="i">$p</span>-&gt;{<span class="q">&#39;yyvs&#39;</span>}-&gt;[<span class="i">$p</span>-&gt;{<span class="q">&#39;yyvsp&#39;</span>}-<span class="n">1</span>]<span class="sc">;</span> <span class="s">}</span>
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326 313 <span class="s">}</span>
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327 314
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328 315 <span class="k">if</span> <span class="s">(</span><span class="i">$p</span>-&gt;{<span class="q">&#39;yyn&#39;</span>} == <span class="n">3</span><span class="s">)</span> <span class="s">{</span>
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329 316 <span class="s">{</span> <span class="i">$p</span><span class="i">-&gt;yyerrok</span><span class="sc">;</span> <span class="i">$p</span><span class="i">-&gt;yyclearin</span><span class="sc">;</span> <span class="s">}</span>
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330 317 <span class="s">}</span>
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331 318
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332 319 <span class="k">if</span> <span class="s">(</span><span class="i">$p</span>-&gt;{<span class="q">&#39;yyn&#39;</span>} == <span class="n">4</span><span class="s">)</span> <span class="s">{</span>
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333 320 <span class="s">{</span> <span class="i">$ExprOut</span> = <span class="k">sprintf</span> <span class="q">&quot;%5i&quot;</span><span class="cm">,</span> <span class="i">$p</span>-&gt;{<span class="q">&#39;yyvs&#39;</span>}-&gt;[<span class="i">$p</span>-&gt;{<span class="q">&#39;yyvsp&#39;</span>}-<span class="n">0</span>]<span class="sc">;</span> <span class="k">print</span> <span class="q">&quot;$ExprOut\n&quot;</span><span class="sc">;</span> <span class="i">$p</span>-&gt;{<span class="q">&#39;yyval&#39;</span>} = <span class="i">$p</span>-&gt;{<span class="q">&#39;yyvs&#39;</span>}-&gt;[<span class="i">$p</span>-&gt;{<span class="q">&#39;yyvsp&#39;</span>}-<span class="n">0</span>]<span class="sc">;</span> <span class="s">}</span>
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334 321 <span class="s">}</span>
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335 322
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336 323 <span class="k">if</span> <span class="s">(</span><span class="i">$p</span>-&gt;{<span class="q">&#39;yyn&#39;</span>} == <span class="n">5</span><span class="s">)</span> <span class="s">{</span>
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337 324 <span class="s">{</span> <span class="i">$LetterToValueMap</span>{<span class="i">$p</span>-&gt;{<span class="q">&#39;yyvs&#39;</span>}-&gt;[<span class="i">$p</span>-&gt;{<span class="q">&#39;yyvsp&#39;</span>}-<span class="n">2</span>]} = <span class="i">$p</span>-&gt;{<span class="q">&#39;yyvs&#39;</span>}-&gt;[<span class="i">$p</span>-&gt;{<span class="q">&#39;yyvsp&#39;</span>}-<span class="n">0</span>]<span class="sc">;</span> <span class="s">}</span>
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338 325 <span class="s">}</span>
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339 326
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340 327 <span class="k">if</span> <span class="s">(</span><span class="i">$p</span>-&gt;{<span class="q">&#39;yyn&#39;</span>} == <span class="n">6</span><span class="s">)</span> <span class="s">{</span>
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341 328 <span class="s">{</span> <span class="i">$p</span>-&gt;{<span class="q">&#39;yyval&#39;</span>} = <span class="i">$p</span>-&gt;{<span class="q">&#39;yyvs&#39;</span>}-&gt;[<span class="i">$p</span>-&gt;{<span class="q">&#39;yyvsp&#39;</span>}-<span class="n">1</span>]<span class="sc">;</span> <span class="s">}</span>
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342 329 <span class="s">}</span>
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343 330
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344 331 <span class="k">if</span> <span class="s">(</span><span class="i">$p</span>-&gt;{<span class="q">&#39;yyn&#39;</span>} == <span class="n">7</span><span class="s">)</span> <span class="s">{</span>
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345 332 <span class="s">{</span> <span class="i">$p</span>-&gt;{<span class="q">&#39;yyval&#39;</span>} = <span class="i">$p</span>-&gt;{<span class="q">&#39;yyvs&#39;</span>}-&gt;[<span class="i">$p</span>-&gt;{<span class="q">&#39;yyvsp&#39;</span>}-<span class="n">2</span>] + <span class="i">$p</span>-&gt;{<span class="q">&#39;yyvs&#39;</span>}-&gt;[<span class="i">$p</span>-&gt;{<span class="q">&#39;yyvsp&#39;</span>}-<span class="n">0</span>]<span class="sc">;</span> <span class="s">}</span>
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346 333 <span class="s">}</span>
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347 334
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348 335 <span class="k">if</span> <span class="s">(</span><span class="i">$p</span>-&gt;{<span class="q">&#39;yyn&#39;</span>} == <span class="n">8</span><span class="s">)</span> <span class="s">{</span>
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349 336 <span class="s">{</span> <span class="i">$p</span>-&gt;{<span class="q">&#39;yyval&#39;</span>} = <span class="i">$p</span>-&gt;{<span class="q">&#39;yyvs&#39;</span>}-&gt;[<span class="i">$p</span>-&gt;{<span class="q">&#39;yyvsp&#39;</span>}-<span class="n">2</span>] - <span class="i">$p</span>-&gt;{<span class="q">&#39;yyvs&#39;</span>}-&gt;[<span class="i">$p</span>-&gt;{<span class="q">&#39;yyvsp&#39;</span>}-<span class="n">0</span>]<span class="sc">;</span> <span class="s">}</span>
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350 337 <span class="s">}</span>
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351 338
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352 339 <span class="k">if</span> <span class="s">(</span><span class="i">$p</span>-&gt;{<span class="q">&#39;yyn&#39;</span>} == <span class="n">9</span><span class="s">)</span> <span class="s">{</span>
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353 340 <span class="s">{</span> <span class="i">$p</span>-&gt;{<span class="q">&#39;yyval&#39;</span>} = <span class="i">$p</span>-&gt;{<span class="q">&#39;yyvs&#39;</span>}-&gt;[<span class="i">$p</span>-&gt;{<span class="q">&#39;yyvsp&#39;</span>}-<span class="n">2</span>] * <span class="i">$p</span>-&gt;{<span class="q">&#39;yyvs&#39;</span>}-&gt;[<span class="i">$p</span>-&gt;{<span class="q">&#39;yyvsp&#39;</span>}-<span class="n">0</span>]<span class="sc">;</span> <span class="s">}</span>
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354 341 <span class="s">}</span>
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355 342
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356 343 <span class="k">if</span> <span class="s">(</span><span class="i">$p</span>-&gt;{<span class="q">&#39;yyn&#39;</span>} == <span class="n">10</span><span class="s">)</span> <span class="s">{</span>
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357 344 <span class="s">{</span> <span class="i">$p</span>-&gt;{<span class="q">&#39;yyval&#39;</span>} = <span class="i">$p</span>-&gt;{<span class="q">&#39;yyvs&#39;</span>}-&gt;[<span class="i">$p</span>-&gt;{<span class="q">&#39;yyvsp&#39;</span>}-<span class="n">2</span>] / <span class="i">$p</span>-&gt;{<span class="q">&#39;yyvs&#39;</span>}-&gt;[<span class="i">$p</span>-&gt;{<span class="q">&#39;yyvsp&#39;</span>}-<span class="n">0</span>]<span class="sc">;</span> <span class="s">}</span>
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358 345 <span class="s">}</span>
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359 346
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360 347 <span class="k">if</span> <span class="s">(</span><span class="i">$p</span>-&gt;{<span class="q">&#39;yyn&#39;</span>} == <span class="n">11</span><span class="s">)</span> <span class="s">{</span>
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361 348 <span class="s">{</span> <span class="i">$p</span>-&gt;{<span class="q">&#39;yyval&#39;</span>} = <span class="i">$p</span>-&gt;{<span class="q">&#39;yyvs&#39;</span>}-&gt;[<span class="i">$p</span>-&gt;{<span class="q">&#39;yyvsp&#39;</span>}-<span class="n">2</span>] % <span class="i">$p</span>-&gt;{<span class="q">&#39;yyvs&#39;</span>}-&gt;[<span class="i">$p</span>-&gt;{<span class="q">&#39;yyvsp&#39;</span>}-<span class="n">0</span>]<span class="sc">;</span> <span class="s">}</span>
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362 349 <span class="s">}</span>
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363 350
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364 351 <span class="k">if</span> <span class="s">(</span><span class="i">$p</span>-&gt;{<span class="q">&#39;yyn&#39;</span>} == <span class="n">13</span><span class="s">)</span> <span class="s">{</span>
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365 352 <span class="s">{</span>
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366 353 <span class="k">if</span> <span class="s">(</span><span class="k">exists</span> <span class="i">$LetterToValueMap</span>{<span class="i">$p</span>-&gt;{<span class="q">&#39;yyvs&#39;</span>}-&gt;[<span class="i">$p</span>-&gt;{<span class="q">&#39;yyvsp&#39;</span>}-<span class="n">0</span>]}<span class="s">)</span> <span class="s">{</span>
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367 354 <span class="i">$p</span>-&gt;{<span class="q">&#39;yyval&#39;</span>} = <span class="i">$LetterToValueMap</span>{<span class="i">$p</span>-&gt;{<span class="q">&#39;yyvs&#39;</span>}-&gt;[<span class="i">$p</span>-&gt;{<span class="q">&#39;yyvsp&#39;</span>}-<span class="n">0</span>]}<span class="sc">;</span>
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368 355 <span class="s">}</span>
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369 356 <span class="k">else</span> <span class="s">{</span>
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370 357 <span class="i">$Letter</span> = <span class="i">$p</span>-&gt;{<span class="q">&#39;yyvs&#39;</span>}-&gt;[<span class="i">$p</span>-&gt;{<span class="q">&#39;yyvsp&#39;</span>}-<span class="n">0</span>]<span class="sc">;</span>
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371 358 <span class="k">print</span> <span class="q">&quot;Undefined variable $Letter encountered by SimpleCalcParser; Value set to 0\n&quot;</span><span class="sc">;</span>
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372 359 <span class="i">$p</span>-&gt;{<span class="q">&#39;yyval&#39;</span>} = <span class="n">0</span><span class="sc">;</span>
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373 360 <span class="s">}</span>
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374 361 <span class="s">}</span>
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375 362 <span class="s">}</span>
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376 363 <span class="i">$p</span>-&gt;{<span class="q">&#39;yyssp&#39;</span>} -= <span class="i">$p</span>-&gt;{<span class="q">&#39;yym&#39;</span>}<span class="sc">;</span>
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377 364 <span class="i">$p</span>-&gt;{<span class="q">&#39;yystate&#39;</span>} = <span class="i">$p</span>-&gt;{<span class="q">&#39;yyss&#39;</span>}-&gt;[<span class="i">$p</span>-&gt;{<span class="q">&#39;yyssp&#39;</span>}]<span class="sc">;</span>
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378 365 <span class="i">$p</span>-&gt;{<span class="q">&#39;yyvsp&#39;</span>} -= <span class="i">$p</span>-&gt;{<span class="q">&#39;yym&#39;</span>}<span class="sc">;</span>
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379 366 <span class="i">$p</span>-&gt;{<span class="q">&#39;yym&#39;</span>} = <span class="i">$yylhs</span>[<span class="i">$p</span>-&gt;{<span class="q">&#39;yyn&#39;</span>}]<span class="sc">;</span>
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380 367 <span class="k">if</span> <span class="s">(</span><span class="i">$p</span>-&gt;{<span class="q">&#39;yystate&#39;</span>} == <span class="n">0</span> &amp;&amp; <span class="i">$p</span>-&gt;{<span class="q">&#39;yym&#39;</span>} == <span class="n">0</span><span class="s">)</span>
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381 368 <span class="s">{</span>
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382 369 <span class="k">warn</span><span class="s">(</span><span class="q">&quot;yydebug: after reduction, shifting from state 0 &quot;</span><span class="cm">,</span>
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383 370 <span class="q">&quot;to state $YYFINAL\n&quot;</span><span class="s">)</span> <span class="k">if</span> <span class="i">$p</span>-&gt;{<span class="q">&#39;yydebug&#39;</span>}<span class="sc">;</span>
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384 371 <span class="i">$p</span>-&gt;{<span class="q">&#39;yystate&#39;</span>} = <span class="i">$YYFINAL</span><span class="sc">;</span>
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385 372 <span class="i">$p</span>-&gt;{<span class="q">&#39;yyss&#39;</span>}-&gt;[++<span class="i">$p</span>-&gt;{<span class="q">&#39;yyssp&#39;</span>}] = <span class="i">$YYFINAL</span><span class="sc">;</span>
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386 373 <span class="i">$p</span>-&gt;{<span class="q">&#39;yyvs&#39;</span>}-&gt;[++<span class="i">$p</span>-&gt;{<span class="q">&#39;yyvsp&#39;</span>}] = <span class="i">$p</span>-&gt;{<span class="q">&#39;yyval&#39;</span>}<span class="sc">;</span>
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387 374 <span class="k">if</span> <span class="s">(</span><span class="i">$p</span>-&gt;{<span class="q">&#39;yychar&#39;</span>} &lt; <span class="n">0</span><span class="s">)</span>
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388 375 <span class="s">{</span>
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389 376 <span class="k">if</span> <span class="s">(</span><span class="s">(</span><span class="s">(</span><span class="i">$p</span>-&gt;{<span class="q">&#39;yychar&#39;</span>}<span class="cm">,</span> <span class="i">$p</span>-&gt;{<span class="q">&#39;yylval&#39;</span>}<span class="s">)</span> =
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390 377 <span class="i">&amp;</span>{<span class="i">$p</span>-&gt;{<span class="q">&#39;yylex&#39;</span>}}<span class="s">(</span><span class="i">$s</span><span class="s">)</span><span class="s">)</span> &lt; <span class="n">0</span><span class="s">)</span> <span class="s">{</span> <span class="i">$p</span>-&gt;{<span class="q">&#39;yychar&#39;</span>} = <span class="n">0</span><span class="sc">;</span> <span class="s">}</span>
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391 378 <span class="k">if</span> <span class="s">(</span><span class="i">$p</span>-&gt;{<span class="q">&#39;yydebug&#39;</span>}<span class="s">)</span>
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392 379 <span class="s">{</span>
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393 380 <span class="i">$p</span>-&gt;{<span class="q">&#39;yys&#39;</span>} = <span class="q">&#39;&#39;</span><span class="sc">;</span>
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394 381 <span class="k">if</span> <span class="s">(</span><span class="i">$p</span>-&gt;{<span class="q">&#39;yychar&#39;</span>} &lt;= <span class="i">$#yyname</span><span class="s">)</span>
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395 382 <span class="s">{</span> <span class="i">$p</span>-&gt;{<span class="q">&#39;yys&#39;</span>} = <span class="i">$yyname</span>[<span class="i">$p</span>-&gt;{<span class="q">&#39;yychar&#39;</span>}]<span class="sc">;</span> <span class="s">}</span>
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396 383 <span class="k">if</span> <span class="s">(</span>!<span class="i">$p</span>-&gt;{<span class="q">&#39;yys&#39;</span>}<span class="s">)</span> <span class="s">{</span> <span class="i">$p</span>-&gt;{<span class="q">&#39;yys&#39;</span>} = <span class="q">&#39;illegal-symbol&#39;</span><span class="sc">;</span> <span class="s">}</span>
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397 384 <span class="k">warn</span><span class="s">(</span><span class="q">&quot;yydebug: state $YYFINAL, reading &quot;</span> .
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398 385 <span class="i">$p</span>-&gt;{<span class="q">&#39;yychar&#39;</span>} . <span class="q">&quot; (&quot;</span> . <span class="i">$p</span>-&gt;{<span class="q">&#39;yys&#39;</span>} . <span class="q">&quot;)\n&quot;</span><span class="s">)</span><span class="sc">;</span>
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399 386 <span class="s">}</span>
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400 387 <span class="s">}</span>
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401 388 <span class="k">return</span> <span class="s">(</span><span class="i">$p</span>-&gt;{<span class="q">&#39;yyvs&#39;</span>}-&gt;[<span class="n">1</span>]<span class="s">)</span> <span class="k">if</span> <span class="i">$p</span>-&gt;{<span class="q">&#39;yychar&#39;</span>} == <span class="n">0</span><span class="sc">;</span>
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402 389 <span class="k">next</span> <span class="j">yyloop</span><span class="sc">;</span>
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403 390 <span class="s">}</span>
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404 391 <span class="k">if</span> <span class="s">(</span><span class="s">(</span><span class="i">$p</span>-&gt;{<span class="q">&#39;yyn&#39;</span>} = <span class="i">$yygindex</span>[<span class="i">$p</span>-&gt;{<span class="q">&#39;yym&#39;</span>}]<span class="s">)</span> &amp;&amp;
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405 392 <span class="s">(</span><span class="i">$p</span>-&gt;{<span class="q">&#39;yyn&#39;</span>} += <span class="i">$p</span>-&gt;{<span class="q">&#39;yystate&#39;</span>}<span class="s">)</span> &gt;= <span class="n">0</span> &amp;&amp;
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406 393 <span class="i">$p</span>-&gt;{<span class="q">&#39;yyn&#39;</span>} &lt;= <span class="i">$#yycheck</span> &amp;&amp;
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407 394 <span class="i">$yycheck</span>[<span class="i">$p</span>-&gt;{<span class="q">&#39;yyn&#39;</span>}] == <span class="i">$p</span>-&gt;{<span class="q">&#39;yystate&#39;</span>}<span class="s">)</span>
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408 395 <span class="s">{</span>
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409 396 <span class="i">$p</span>-&gt;{<span class="q">&#39;yystate&#39;</span>} = <span class="i">$yytable</span>[<span class="i">$p</span>-&gt;{<span class="q">&#39;yyn&#39;</span>}]<span class="sc">;</span>
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410 397 <span class="s">}</span> <span class="k">else</span> <span class="s">{</span>
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411 398 <span class="i">$p</span>-&gt;{<span class="q">&#39;yystate&#39;</span>} = <span class="i">$yydgoto</span>[<span class="i">$p</span>-&gt;{<span class="q">&#39;yym&#39;</span>}]<span class="sc">;</span>
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412 399 <span class="s">}</span>
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413 400 <span class="k">warn</span><span class="s">(</span><span class="q">&quot;yydebug: after reduction, shifting from state &quot;</span> .
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414 401 <span class="i">$p</span>-&gt;{<span class="q">&#39;yyss&#39;</span>}-&gt;[<span class="i">$p</span>-&gt;{<span class="q">&#39;yyssp&#39;</span>}] . <span class="q">&quot; to state &quot;</span> .
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415 402 <span class="i">$p</span>-&gt;{<span class="q">&#39;yystate&#39;</span>} . <span class="q">&quot;\n&quot;</span><span class="s">)</span> <span class="k">if</span> <span class="i">$p</span>-&gt;{<span class="q">&#39;yydebug&#39;</span>}<span class="sc">;</span>
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416 403 <span class="i">$p</span>-&gt;{<span class="q">&#39;yyss&#39;</span>}[++<span class="i">$p</span>-&gt;{<span class="q">&#39;yyssp&#39;</span>}] = <span class="i">$p</span>-&gt;{<span class="q">&#39;yystate&#39;</span>}<span class="sc">;</span>
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417 404 <span class="i">$p</span>-&gt;{<span class="q">&#39;yyvs&#39;</span>}[++<span class="i">$p</span>-&gt;{<span class="q">&#39;yyvsp&#39;</span>}] = <span class="i">$p</span>-&gt;{<span class="q">&#39;yyval&#39;</span>}<span class="sc">;</span>
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418 405 <span class="s">}</span> <span class="c"># yyloop</span>
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419 406 <span class="s">}</span> <span class="c"># yyparse</span>
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420 407
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421 408
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422 409 <span class="c"># yyerror function supplied to parser along with a lexer during initialization of</span>
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423 410 <span class="c"># the parser...</span>
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424 411 <span class="c">#</span>
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425 412
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426 <a name="yyerror-1-"></a> 413 <span class="k">sub </span><span class="m">yyerror</span> <span class="s">{</span>
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427 414 <span class="k">my</span> <span class="s">(</span><span class="i">$msg</span><span class="s">)</span> = <span class="i">@_</span><span class="sc">;</span>
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428 415 <span class="k">print</span> <span class="q">&quot;yyerror: $msg...\n&quot;</span><span class="sc">;</span>
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429 416 <span class="s">}</span>
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430 417
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431 <a name="EOF-"></a></pre>
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432 <p>&nbsp;</p>
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433 <br />
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434 <center>
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435 <img src="../../../images/h2o2.png">
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436 </center>
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437 </body>
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438 </html>