data/xslt/xml2dot.xsl

   1 <?xml version="1.0" encoding="UTF-8"?>
   2
   3 <!--
   4     xml2dot.xsl - transform Bison XML Report into DOT.
   5
   6     Copyright (C) 2007-2012 Free Software Foundation, Inc.
   7
   8     This file is part of Bison, the GNU Compiler Compiler.
   9
  10     This program is free software: you can redistribute it and/or modify
  11     it under the terms of the GNU General Public License as published by
  12     the Free Software Foundation, either version 3 of the License, or
  13     (at your option) any later version.
  14
  15     This program is distributed in the hope that it will be useful,
  16     but WITHOUT ANY WARRANTY; without even the implied warranty of
  17     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18     GNU General Public License for more details.
  19
  20     You should have received a copy of the GNU General Public License
  21     along with this program.  If not, see <http://www.gnu.org/licenses/>.
  22
  23     Written by Wojciech Polak <polak@gnu.org>.
  24   -->
  25
  26 <xsl:stylesheet version="1.0"
  27   xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
  28   xmlns:bison="http://www.gnu.org/software/bison/">
  29
  30 <xsl:import href="bison.xsl"/>
  31 <xsl:output method="text" encoding="UTF-8" indent="no"/>
  32
  33 <xsl:template match="/">
  34   <xsl:apply-templates select="bison-xml-report"/>
  35 </xsl:template>
  36
  37 <xsl:template match="bison-xml-report">
  38   <xsl:text>// Generated by GNU Bison </xsl:text>
  39   <xsl:value-of select="@version"/>
  40   <xsl:text>.&#10;</xsl:text>
  41   <xsl:text>// Report bugs to &lt;</xsl:text>
  42   <xsl:value-of select="@bug-report"/>
  43   <xsl:text>&gt;.&#10;</xsl:text>
  44   <xsl:text>// Home page: &lt;</xsl:text>
  45   <xsl:value-of select="@url"/>
  46   <xsl:text>&gt;.&#10;&#10;</xsl:text>
  47   <xsl:apply-templates select="automaton">
  48     <xsl:with-param name="filename" select="filename"/>
  49   </xsl:apply-templates>
  50 </xsl:template>
  51
  52 <xsl:template match="automaton">
  53   <xsl:param name="filename"/>
  54   <xsl:text>digraph "</xsl:text>
  55   <xsl:call-template name="escape">
  56     <xsl:with-param name="subject" select="$filename"/>
  57   </xsl:call-template>
  58   <xsl:text>"&#10;{&#10;</xsl:text>
  59   <xsl:apply-templates select="state"/>
  60   <xsl:text>}&#10;</xsl:text>
  61 </xsl:template>
  62
  63 <xsl:template match="automaton/state">
  64   <xsl:call-template name="output-node">
  65     <xsl:with-param name="number" select="@number"/>
  66     <xsl:with-param name="label">
  67       <xsl:value-of select="@number"/>
  68       <xsl:apply-templates select="itemset/item"/>
  69     </xsl:with-param>
  70   </xsl:call-template>
  71   <xsl:apply-templates select="actions/transitions"/>
  72 </xsl:template>
  73
  74 <xsl:template match="actions/transitions">
  75   <xsl:apply-templates select="transition"/>
  76 </xsl:template>
  77
  78 <xsl:template match="item">
  79   <xsl:apply-templates select="key('bison:ruleByNumber', @rule-number)">
  80     <xsl:with-param name="point" select="@point"/>
  81   </xsl:apply-templates>
  82   <xsl:apply-templates select="lookaheads"/>
  83 </xsl:template>
  84
  85 <xsl:template match="rule">
  86   <xsl:param name="point"/>
  87   <xsl:text>&#10;</xsl:text>
  88   <xsl:value-of select="lhs"/>
  89   <xsl:text> -&gt;</xsl:text>
  90   <xsl:if test="$point = 0">
  91     <xsl:text> .</xsl:text>
  92   </xsl:if>
  93   <xsl:for-each select="rhs/symbol|rhs/empty">
  94     <xsl:apply-templates select="."/>
  95     <xsl:if test="$point = position()">
  96       <xsl:text> .</xsl:text>
  97     </xsl:if>
  98   </xsl:for-each>
  99 </xsl:template>
 100
 101 <xsl:template match="symbol">
 102   <xsl:text> </xsl:text>
 103   <xsl:value-of select="."/>
 104 </xsl:template>
 105
 106 <xsl:template match="empty"/>
 107
 108 <xsl:template match="lookaheads">
 109   <xsl:text>[</xsl:text>
 110   <xsl:apply-templates select="symbol"/>
 111   <xsl:text>]</xsl:text>
 112 </xsl:template>
 113
 114 <xsl:template match="lookaheads/symbol">
 115   <xsl:value-of select="."/>
 116   <xsl:if test="position() != last()">
 117     <xsl:text>, </xsl:text>
 118   </xsl:if>
 119 </xsl:template>
 120
 121 <xsl:template match="transition">
 122   <xsl:call-template name="output-edge">
 123     <xsl:with-param name="src" select="../../../@number"/>
 124     <xsl:with-param name="dst" select="@state"/>
 125     <xsl:with-param name="style">
 126       <xsl:choose>
 127         <xsl:when test="@symbol = 'error'">
 128           <xsl:text>dotted</xsl:text>
 129         </xsl:when>
 130         <xsl:when test="@type = 'shift'">
 131           <xsl:text>solid</xsl:text>
 132         </xsl:when>
 133         <xsl:otherwise>
 134           <xsl:text>dashed</xsl:text>
 135         </xsl:otherwise>
 136       </xsl:choose>
 137     </xsl:with-param>
 138     <xsl:with-param name="label">
 139       <xsl:if test="not(@symbol = 'error')">
 140         <xsl:value-of select="@symbol"/>
 141       </xsl:if>
 142     </xsl:with-param>
 143   </xsl:call-template>
 144 </xsl:template>
 145
 146 <xsl:template name="output-node">
 147   <xsl:param name="number"/>
 148   <xsl:param name="label"/>
 149   <xsl:text>  </xsl:text>
 150   <xsl:value-of select="$number"/>
 151   <xsl:text> [label="</xsl:text>
 152   <xsl:call-template name="escape">
 153     <xsl:with-param name="subject" select="$label"/>
 154   </xsl:call-template>
 155   <xsl:text>"]&#10;</xsl:text>
 156 </xsl:template>
 157
 158 <xsl:template name="output-edge">
 159   <xsl:param name="src"/>
 160   <xsl:param name="dst"/>
 161   <xsl:param name="style"/>
 162   <xsl:param name="label"/>
 163   <xsl:text>  </xsl:text>
 164   <xsl:value-of select="$src"/>
 165   <xsl:text> -> </xsl:text>
 166   <xsl:value-of select="$dst"/>
 167   <xsl:text> [style=</xsl:text>
 168   <xsl:value-of select="$style"/>
 169   <xsl:if test="$label and $label != ''">
 170     <xsl:text> label="</xsl:text>
 171     <xsl:call-template name="escape">
 172       <xsl:with-param name="subject" select="$label"/>
 173     </xsl:call-template>
 174     <xsl:text>"</xsl:text>
 175   </xsl:if>
 176   <xsl:text>]&#10;</xsl:text>
 177 </xsl:template>
 178
 179 <xsl:template name="escape">
 180   <xsl:param name="subject"/> <!-- required -->
 181   <xsl:call-template name="string-replace">
 182     <xsl:with-param name="subject">
 183       <xsl:call-template name="string-replace">
 184         <xsl:with-param name="subject">
 185           <xsl:call-template name="string-replace">
 186             <xsl:with-param name="subject" select="$subject"/>
 187             <xsl:with-param name="search" select="'\'"/>
 188             <xsl:with-param name="replace" select="'\\'"/>
 189           </xsl:call-template>
 190         </xsl:with-param>
 191         <xsl:with-param name="search" select="'&quot;'"/>
 192         <xsl:with-param name="replace" select="'\&quot;'"/>
 193       </xsl:call-template>
 194     </xsl:with-param>
 195     <xsl:with-param name="search" select="'&#10;'"/>
 196     <xsl:with-param name="replace" select="'\n'"/>
 197   </xsl:call-template>
 198 </xsl:template>
 199
 200 <xsl:template name="string-replace">
 201   <xsl:param name="subject"/>
 202   <xsl:param name="search"/>
 203   <xsl:param name="replace"/>
 204   <xsl:choose>
 205     <xsl:when test="contains($subject, $search)">
 206       <xsl:variable name="before" select="substring-before($subject, $search)"/>
 207       <xsl:variable name="after" select="substring-after($subject, $search)"/>
 208       <xsl:value-of select="$before"/>
 209       <xsl:value-of select="$replace"/>
 210       <xsl:call-template name="string-replace">
 211         <xsl:with-param name="subject" select="$after"/>
 212         <xsl:with-param name="search" select="$search"/>
 213         <xsl:with-param name="replace" select="$replace"/>
 214       </xsl:call-template>
 215     </xsl:when>
 216     <xsl:otherwise>
 217       <xsl:value-of select="$subject"/>
 218     </xsl:otherwise>
 219   </xsl:choose>
 220 </xsl:template>
 221
 222 </xsl:stylesheet>