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<?xml version="1.0" encoding="UTF-8"?>
<!--
xml2dot.xsl - transform Bison XML Report into DOT.
Copyright (C) 2007, 2008 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:apply-templates select="automaton"/>
</xsl:template>
<xsl:template match="automaton">
<xsl:text>digraph Automaton { </xsl:text>
<xsl:apply-templates select="state"/>
<xsl:text>} </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:value-of select="@number"/>
<xsl:apply-templates select="itemset/item"/>
</xsl:with-param>
</xsl:call-template>
<xsl:apply-templates select="actions/transitions"/>
</xsl:template>
<xsl:template match="actions/transitions">
<xsl:apply-templates select="transition"/>
</xsl:template>
<xsl:template match="item">
<xsl:apply-templates select="key('bison:ruleByNumber', @rule-number)">
<xsl:with-param name="point" select="@point"/>
</xsl:apply-templates>
<xsl:apply-templates select="lookaheads"/>
</xsl:template>
<xsl:template match="rule">
<xsl:param name="point"/>
<xsl:text> </xsl:text>
<xsl:value-of select="lhs"/>
<xsl:text> -></xsl:text>
<xsl:if test="$point = 0">
<xsl:text> .</xsl:text>
</xsl:if>
<xsl:for-each select="rhs/symbol|rhs/empty">
<xsl:apply-templates select="."/>
<xsl:if test="$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: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 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="$number"/>
<xsl:text> [label="</xsl:text>
<xsl:call-template name="escape">
<xsl:with-param name="subject" select="$label"/>
</xsl:call-template>
<xsl:text>"] </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>] </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="$subject"/>
<xsl:with-param name="search" select="'\'"/>
<xsl:with-param name="replace" select="'\\'"/>
</xsl:call-template>
</xsl:with-param>
<xsl:with-param name="search" select="'"'"/>
<xsl:with-param name="replace" select="'\"'"/>
</xsl:call-template>
</xsl:with-param>
<xsl:with-param name="search" select="' '"/>
<xsl:with-param name="replace" select="'\n'"/>
</xsl:call-template>
</xsl:template>
<xsl:template name="string-replace">
<xsl:param name="subject"/>
<xsl:param name="search"/>
<xsl:param name="replace"/>
<xsl:choose>
<xsl:when test="contains($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:stylesheet>
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