<!--
xml2dot.xsl - transform Bison XML Report into DOT.
- $Id$
- Copyright (C) 2007 Free Software Foundation, Inc.
+ Copyright (C) 2007-2012 Free Software Foundation, Inc.
This file is part of Bison, the GNU Compiler Compiler.
-->
<xsl:stylesheet version="1.0"
- xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
-
+ 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:template>
<xsl:template match="bison-xml-report">
- <xsl:apply-templates select="automaton"/>
+ <xsl:text>// Generated by GNU Bison </xsl:text>
+ <xsl:value-of select="@version"/>
+ <xsl:text>. </xsl:text>
+ <xsl:text>// Report bugs to <</xsl:text>
+ <xsl:value-of select="@bug-report"/>
+ <xsl:text>>. </xsl:text>
+ <xsl:text>// Home page: <</xsl:text>
+ <xsl:value-of select="@url"/>
+ <xsl:text>>. </xsl:text>
+ <xsl:apply-templates select="automaton">
+ <xsl:with-param name="filename" select="filename"/>
+ </xsl:apply-templates>
</xsl:template>
<xsl:template match="automaton">
- <xsl:text>digraph Automaton { </xsl:text>
+ <xsl:param name="filename"/>
+ <xsl:text>digraph "</xsl:text>
+ <xsl:call-template name="escape">
+ <xsl:with-param name="subject" select="$filename"/>
+ </xsl:call-template>
+ <xsl:text>" {
+ node [fontname = courier, shape = box, colorscheme = paired6]
+ edge [fontname = courier]
+
+</xsl:text>
<xsl:apply-templates select="state"/>
<xsl:text>} </xsl:text>
</xsl:template>
<xsl:call-template name="output-node">
<xsl:with-param name="number" select="@number"/>
<xsl:with-param name="label">
- <xsl:value-of select="@number"/>
- <xsl:apply-templates select="itemset/rule"/>
+ <xsl:apply-templates select="itemset/item"/>
</xsl:with-param>
</xsl:call-template>
<xsl:apply-templates select="actions/transitions"/>
+ <xsl:apply-templates select="actions/reductions">
+ <xsl:with-param name="staten">
+ <xsl:value-of select="@number"/>
+ </xsl:with-param>
+ </xsl:apply-templates>
+</xsl:template>
+
+<xsl:template match="actions/reductions">
+ <xsl:param name="staten"/>
+ <xsl:for-each select='reduction'>
+ <!-- These variables are needed because the current context can't be
+ refered to directly in XPath expressions. -->
+ <xsl:variable name="rul">
+ <xsl:value-of select="@rule"/>
+ </xsl:variable>
+ <xsl:variable name="ena">
+ <xsl:value-of select="@enabled"/>
+ </xsl:variable>
+ <!-- The foreach's body is protected by this, so that we are actually
+ going to iterate once per reduction rule, and not per lookahead. -->
+ <xsl:if test='not(preceding-sibling::*[@rule=$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=$rule]'>
+ <xsl:call-template name="escape">
+ <xsl:with-param name="subject" select="@symbol"/>
+ </xsl:call-template>
+ <xsl:if test="position() != last ()">
+ <xsl:text>, </xsl:text>
+ </xsl:if>
+ </xsl:for-each>
+ <xsl:text>]", </xsl:text>
+ </xsl:if>
+
+ <!-- The edge's end -->
+ <xsl:text>style=solid] </xsl:text>
+
+ <!-- The diamond representing the reduction -->
+ <xsl:call-template name="reduction-node">
+ <xsl:with-param name="state" select="$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', $prev-rule-number)/lhs[text()]"
+ />
+ </xsl:apply-templates>
+ <xsl:apply-templates select="lookaheads"/>
+</xsl:template>
+
<xsl:template match="rule">
+ <xsl:param name="point"/>
+ <xsl:param name="num"/>
+ <xsl:param name="prev-lhs"/>
<xsl:text> </xsl:text>
- <xsl:value-of select="lhs"/>
- <xsl:text> -></xsl:text>
- <xsl:apply-templates select="rhs/symbol|rhs/point|rhs/empty"/>
- <xsl:apply-templates select="lookaheads"/>
+ <xsl:choose>
+ <xsl:when test="$num < 10">
+ <xsl:text> </xsl:text>
+ </xsl:when>
+ <xsl:when test="$num < 100">
+ <xsl:text> </xsl:text>
+ </xsl:when>
+ <xsl:otherwise>
+ <xsl:text></xsl:text>
+ </xsl:otherwise>
+ </xsl:choose>
+ <xsl:value-of select="$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>
+ <xsl:for-each select="rhs/symbol|rhs/empty">
+ <xsl:apply-templates select="."/>
+ <xsl:if test="$point = position()">
+ <xsl:text> .</xsl:text>
+ </xsl:if>
+ </xsl:for-each>
</xsl:template>
<xsl:template match="symbol">
<xsl:value-of select="."/>
</xsl:template>
-<xsl:template match="point">
- <xsl:text> .</xsl:text>
-</xsl:template>
-
-<xsl:template match="empty">
- <xsl:text> /* empty */</xsl:text>
-</xsl:template>
+<xsl:template match="empty"/>
<xsl:template match="lookaheads">
- <xsl:text>[</xsl:text>
+ <xsl:text> [</xsl:text>
<xsl:apply-templates select="symbol"/>
<xsl:text>]</xsl:text>
</xsl:template>
</xsl:if>
</xsl:template>
+<xsl:template name="reduction-edge-start">
+ <xsl:param name="state"/>
+ <xsl:param name="rule"/>
+ <xsl:param name="enabled"/>
+
+ <xsl:text> </xsl:text>
+ <xsl:value-of select="$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="$color"/>
+ </xsl:otherwise>
+ </xsl:choose>
+ <xsl:text>, shape=diamond, style=filled] </xsl:text>
+</xsl:template>
+
<xsl:template match="transition">
<xsl:call-template name="output-edge">
<xsl:with-param name="src" select="../../../@number"/>
<xsl:text> </xsl:text>
<xsl:value-of select="$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>"] </xsl:text>
+ <xsl:text>\l"] </xsl:text>
</xsl:template>
<xsl:template name="output-edge">
</xsl:template>
<xsl:template name="escape">
- <xsl:param name="subject" required="yes"/>
+ <xsl:param name="subject"/> <!-- required -->
<xsl:call-template name="string-replace">
<xsl:with-param name="subject">
<xsl:call-template name="string-replace">
</xsl:call-template>
</xsl:with-param>
<xsl:with-param name="search" select="' '"/>
- <xsl:with-param name="replace" select="'\n'"/>
+ <xsl:with-param name="replace" select="'\l'"/>
</xsl:call-template>
</xsl:template>
<xsl:with-param name="search" select="$search"/>
<xsl:with-param name="replace" select="$replace"/>
</xsl:call-template>
- </xsl:when>
+ </xsl:when>
<xsl:otherwise>
- <xsl:value-of select="$subject"/>
+ <xsl:value-of select="$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="$diff < 0">
+ <xsl:value-of select="$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:choose>
</xsl:template>
</xsl:stylesheet>
projects / bison.git / blobdiff