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EDIT :: xml2dot.xsl

<?xml version="1.0" encoding="UTF-8"?> <!-- xml2dot.xsl - transform Bison XML Report into DOT. Copyright (C) 2007-2015 Free Software Foundation, Inc. This file is part of Bison, the GNU Compiler Compiler. This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program. If not, see <http://www.gnu.org/licenses/>. Written by Wojciech Polak <polak@gnu.org>. --> <xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform" xmlns:bison="http://www.gnu.org/software/bison/"> <xsl:import href="bison.xsl"/> <xsl:output method="text" encoding="UTF-8" indent="no"/> <xsl:template match="/"> <xsl:apply-templates select="bison-xml-report"/> </xsl:template> <xsl:template match="bison-xml-report"> <xsl:text>// Generated by GNU Bison </xsl:text> <xsl:value-of select="@version"/> <xsl:text>.&#10;</xsl:text> <xsl:text>// Report bugs to &lt;</xsl:text> <xsl:value-of select="@bug-report"/> <xsl:text>&gt;.&#10;</xsl:text> <xsl:text>// Home page: &lt;</xsl:text> <xsl:value-of select="@url"/> <xsl:text>&gt;.&#10;&#10;</xsl:text> <xsl:apply-templates select="automaton"> <xsl:with-param name="filename" select="filename"/> </xsl:apply-templates> </xsl:template> <xsl:template match="automaton"> <xsl:param name="filename"/> <xsl:text>digraph "</xsl:text> <xsl:call-template name="escape"> <xsl:with-param name="subject" select="$filename"/> </xsl:call-template> <xsl:text>"&#10;{ node [fontname = courier, shape = box, colorscheme = paired6] edge [fontname = courier] </xsl:text> <xsl:apply-templates select="state"/> <xsl:text>}&#10;</xsl:text> </xsl:template> <xsl:template match="automaton/state"> <xsl:call-template name="output-node"> <xsl:with-param name="number" select="@number"/> <xsl:with-param name="label"> <xsl:apply-templates select="itemset/item"/> </xsl:with-param> </xsl:call-template> <xsl:apply-templates select="actions/transitions"/> <xsl:apply-templates select="actions/reductions"> <xsl:with-param name="staten"> <xsl:value-of select="@number"/> </xsl:with-param> </xsl:apply-templates> </xsl:template> <xsl:template match="actions/reductions"> <xsl:param name="staten"/> <xsl:for-each select='reduction'> <!-- These variables are needed because the current context can't be refered to directly in XPath expressions. --> <xsl:variable name="rul"> <xsl:value-of select="@rule"/> </xsl:variable> <xsl:variable name="ena"> <xsl:value-of select="@enabled"/> </xsl:variable> <!-- The foreach's body is protected by this, so that we are actually going to iterate once per reduction rule, and not per lookahead. --> <xsl:if test='not(preceding-sibling::*[@rule=$rul and @enabled=$ena])'> <xsl:variable name="rule"> <xsl:choose> <!-- The acceptation state is refered to as 'accept' in the XML, but just as '0' in the DOT. --> <xsl:when test="@rule='accept'"> <xsl:text>0</xsl:text> </xsl:when> <xsl:otherwise> <xsl:value-of select="@rule"/> </xsl:otherwise> </xsl:choose> </xsl:variable> <!-- The edge's beginning --> <xsl:call-template name="reduction-edge-start"> <xsl:with-param name="state" select="$staten"/> <xsl:with-param name="rule" select="$rule"/> <xsl:with-param name="enabled" select="@enabled"/> </xsl:call-template> <!-- The edge's tokens --> <!-- Don't show labels for the default action. In other cases, there will always be at least one token, so 'label="[]"' will not occur. --> <xsl:if test='$rule!=0 and not(../reduction[@enabled=$ena and @rule=$rule and @symbol="$default"])'> <xsl:text>label="[</xsl:text> <xsl:for-each select='../reduction[@enabled=$ena and @rule=$rule]'> <xsl:call-template name="escape"> <xsl:with-param name="subject" select="@symbol"/> </xsl:call-template> <xsl:if test="position() != last ()"> <xsl:text>, </xsl:text> </xsl:if> </xsl:for-each> <xsl:text>]", </xsl:text> </xsl:if> <!-- The edge's end --> <xsl:text>style=solid]&#10;</xsl:text> <!-- The diamond representing the reduction --> <xsl:call-template name="reduction-node"> <xsl:with-param name="state" select="$staten"/> <xsl:with-param name="rule" select="$rule"/> <xsl:with-param name="color"> <xsl:choose> <xsl:when test='@enabled="true"'> <xsl:text>3</xsl:text> </xsl:when> <xsl:otherwise> <xsl:text>5</xsl:text> </xsl:otherwise> </xsl:choose> </xsl:with-param> </xsl:call-template> </xsl:if> </xsl:for-each> </xsl:template> <xsl:template match="actions/transitions"> <xsl:apply-templates select="transition"/> </xsl:template> <xsl:template match="item"> <xsl:param name="prev-rule-number" select="preceding-sibling::item[1]/@rule-number"/> <xsl:apply-templates select="key('bison:ruleByNumber', @rule-number)"> <xsl:with-param name="point" select="@point"/> <xsl:with-param name="num" select="@rule-number"/> <xsl:with-param name="prev-lhs" select="key('bison:ruleByNumber', $prev-rule-number)/lhs[text()]" /> </xsl:apply-templates> <xsl:apply-templates select="lookaheads"/> </xsl:template> <xsl:template match="rule"> <xsl:param name="point"/> <xsl:param name="num"/> <xsl:param name="prev-lhs"/> <xsl:text>&#10;</xsl:text> <xsl:choose> <xsl:when test="$num &lt; 10"> <xsl:text> </xsl:text> </xsl:when> <xsl:when test="$num &lt; 100"> <xsl:text> </xsl:text> </xsl:when> <xsl:otherwise> <xsl:text></xsl:text> </xsl:otherwise> </xsl:choose> <xsl:value-of select="$num"/> <xsl:text> </xsl:text> <xsl:choose> <xsl:when test="$prev-lhs = lhs[text()]"> <xsl:call-template name="lpad"> <xsl:with-param name="str" select="'|'"/> <xsl:with-param name="pad" select="number(string-length(lhs[text()])) + 1"/> </xsl:call-template> </xsl:when> <xsl:otherwise> <xsl:value-of select="lhs"/> <xsl:text>:</xsl:text> </xsl:otherwise> </xsl:choose> <xsl:if test="$point = 0"> <xsl:text> .</xsl:text> </xsl:if> <!-- RHS --> <xsl:for-each select="rhs/symbol|rhs/empty"> <xsl:apply-templates select="."/> <xsl:if test="$point = position()"> <xsl:text> .</xsl:text> </xsl:if> </xsl:for-each> </xsl:template> <xsl:template match="symbol"> <xsl:text> </xsl:text> <xsl:value-of select="."/> </xsl:template> <xsl:template match="empty"> <xsl:text> %empty</xsl:text> </xsl:template> <xsl:template match="lookaheads"> <xsl:text> [</xsl:text> <xsl:apply-templates select="symbol"/> <xsl:text>]</xsl:text> </xsl:template> <xsl:template match="lookaheads/symbol"> <xsl:value-of select="."/> <xsl:if test="position() != last()"> <xsl:text>, </xsl:text> </xsl:if> </xsl:template> <xsl:template name="reduction-edge-start"> <xsl:param name="state"/> <xsl:param name="rule"/> <xsl:param name="enabled"/> <xsl:text> </xsl:text> <xsl:value-of select="$state"/> <xsl:text> -> "</xsl:text> <xsl:value-of select="$state"/> <xsl:text>R</xsl:text> <xsl:value-of select="$rule"/> <xsl:if test='$enabled = "false"'> <xsl:text>d</xsl:text> </xsl:if> <xsl:text>" [</xsl:text> </xsl:template> <xsl:template name="reduction-node"> <xsl:param name="state"/> <xsl:param name="rule"/> <xsl:param name="color"/> <xsl:text> "</xsl:text> <xsl:value-of select="$state"/> <xsl:text>R</xsl:text> <xsl:value-of select="$rule"/> <xsl:if test="$color = 5"> <xsl:text>d</xsl:text> </xsl:if> <xsl:text>" [label="</xsl:text> <xsl:choose> <xsl:when test="$rule = 0"> <xsl:text>Acc", fillcolor=1</xsl:text> </xsl:when> <xsl:otherwise> <xsl:text>R</xsl:text> <xsl:value-of select="$rule"/> <xsl:text>", fillcolor=</xsl:text> <xsl:value-of select="$color"/> </xsl:otherwise> </xsl:choose> <xsl:text>, shape=diamond, style=filled]&#10;</xsl:text> </xsl:template> <xsl:template match="transition"> <xsl:call-template name="output-edge"> <xsl:with-param name="src" select="../../../@number"/> <xsl:with-param name="dst" select="@state"/> <xsl:with-param name="style"> <xsl:choose> <xsl:when test="@symbol = 'error'"> <xsl:text>dotted</xsl:text> </xsl:when> <xsl:when test="@type = 'shift'"> <xsl:text>solid</xsl:text> </xsl:when> <xsl:otherwise> <xsl:text>dashed</xsl:text> </xsl:otherwise> </xsl:choose> </xsl:with-param> <xsl:with-param name="label"> <xsl:if test="not(@symbol = 'error')"> <xsl:value-of select="@symbol"/> </xsl:if> </xsl:with-param> </xsl:call-template> </xsl:template> <xsl:template name="output-node"> <xsl:param name="number"/> <xsl:param name="label"/> <xsl:text> </xsl:text> <xsl:value-of select="$number"/> <xsl:text> [label="</xsl:text> <xsl:text>State </xsl:text> <xsl:value-of select="$number"/> <xsl:text>\n</xsl:text> <xsl:call-template name="escape"> <xsl:with-param name="subject" select="$label"/> </xsl:call-template> <xsl:text>\l"]&#10;</xsl:text> </xsl:template> <xsl:template name="output-edge"> <xsl:param name="src"/> <xsl:param name="dst"/> <xsl:param name="style"/> <xsl:param name="label"/> <xsl:text> </xsl:text> <xsl:value-of select="$src"/> <xsl:text> -> </xsl:text> <xsl:value-of select="$dst"/> <xsl:text> [style=</xsl:text> <xsl:value-of select="$style"/> <xsl:if test="$label and $label != ''"> <xsl:text> label="</xsl:text> <xsl:call-template name="escape"> <xsl:with-param name="subject" select="$label"/> </xsl:call-template> <xsl:text>"</xsl:text> </xsl:if> <xsl:text>]&#10;</xsl:text> </xsl:template> <xsl:template name="escape"> <xsl:param name="subject"/> <!-- required --> <xsl:call-template name="string-replace"> <xsl:with-param name="subject"> <xsl:call-template name="string-replace"> <xsl:with-param name="subject"> <xsl:call-template name="string-replace"> <xsl:with-param name="subject" select="$subject"/> <xsl:with-param name="search" select="'\'"/> <xsl:with-param name="replace" select="'\\'"/> </xsl:call-template> </xsl:with-param> <xsl:with-param name="search" select="'&quot;'"/> <xsl:with-param name="replace" select="'\&quot;'"/> </xsl:call-template> </xsl:with-param> <xsl:with-param name="search" select="'&#10;'"/> <xsl:with-param name="replace" select="'\l'"/> </xsl:call-template> </xsl:template> <xsl:template name="string-replace"> <xsl:param name="subject"/> <xsl:param name="search"/> <xsl:param name="replace"/> <xsl:choose> <xsl:when test="contains($subject, $search)"> <xsl:variable name="before" select="substring-before($subject, $search)"/> <xsl:variable name="after" select="substring-after($subject, $search)"/> <xsl:value-of select="$before"/> <xsl:value-of select="$replace"/> <xsl:call-template name="string-replace"> <xsl:with-param name="subject" select="$after"/> <xsl:with-param name="search" select="$search"/> <xsl:with-param name="replace" select="$replace"/> </xsl:call-template> </xsl:when> <xsl:otherwise> <xsl:value-of select="$subject"/> </xsl:otherwise> </xsl:choose> </xsl:template> <xsl:template name="lpad"> <xsl:param name="str" select="''"/> <xsl:param name="pad" select="0"/> <xsl:variable name="diff" select="$pad - string-length($str)" /> <xsl:choose> <xsl:when test="$diff &lt; 0"> <xsl:value-of select="$str"/> </xsl:when> <xsl:otherwise> <xsl:call-template name="space"> <xsl:with-param name="repeat" select="$diff"/> </xsl:call-template> <xsl:value-of select="$str"/> </xsl:otherwise> </xsl:choose> </xsl:template> </xsl:stylesheet>

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