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<?xml version="1.0" encoding="UTF-8"?> <!-- xml2html.xsl - transform Bison XML Report into XHTML. Copyright (C) 2007-2015, 2018-2020 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="http://www.w3.org/1999/xhtml" xmlns:bison="http://www.gnu.org/software/bison/"> <xsl:import href="bison.xsl"/> <xsl:output method="xml" encoding="UTF-8" doctype-public="-//W3C//DTD XHTML 1.0 Strict//EN" doctype-system="http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd" indent="yes"/> <xsl:template match="/"> <html> <head> <meta http-equiv="Content-Type" content="text/html;charset=UTF-8"/> <title> <xsl:value-of select="bison-xml-report/filename"/> <xsl:text> - GNU Bison XML Automaton Report</xsl:text> </title> <style type="text/css"><![CDATA[ body { font-family: "Nimbus Sans L", Arial, sans-serif; font-size: 9pt; } a:link { color: #1f00ff; text-decoration: none; } a:visited { color: #1f00ff; text-decoration: none; } a:hover { color: red; } #menu a { text-decoration: underline; } .i { font-style: italic; } .pre { font-family: monospace; white-space: pre; } ol.decimal { list-style-type: decimal; } ol.lower-alpha { list-style-type: lower-alpha; } .dot { color: #cc0000; } #footer { margin-top: 3.5em; font-size: 7pt; } ]]></style> </head> <body> <xsl:apply-templates select="bison-xml-report"/> <xsl:text> </xsl:text> <div id="footer"><hr />This document was generated using <a href="http://www.gnu.org/software/bison/" title="GNU Bison"> GNU Bison <xsl:value-of select="/bison-xml-report/@version"/></a> XML Automaton Report.<br /> <!-- default copying notice --> Verbatim copying and distribution of this entire page is permitted in any medium, provided this notice is preserved.</div> </body> </html> </xsl:template> <xsl:template match="bison-xml-report"> <h1>GNU Bison XML Automaton Report</h1> <p> input grammar: <span class="i"><xsl:value-of select="filename"/></span> </p> <xsl:text> </xsl:text> <h3>Table of Contents</h3> <ul id="menu"> <li> <a href="#reductions">Reductions</a> <ul class="lower-alpha"> <li><a href="#nonterminals_useless_in_grammar">Nonterminals useless in grammar</a></li> <li><a href="#terminals_unused_in_grammar">Terminals unused in grammar</a></li> <li><a href="#rules_useless_in_grammar">Rules useless in grammar</a></li> <xsl:if test="grammar/rules/rule[@usefulness='useless-in-parser']"> <li><a href="#rules_useless_in_parser">Rules useless in parser due to conflicts</a></li> </xsl:if> </ul> </li> <li><a href="#conflicts">Conflicts</a></li> <li> <a href="#grammar">Grammar</a> <ul class="lower-alpha"> <li><a href="#grammar">Itemset</a></li> <li><a href="#terminals">Terminal symbols</a></li> <li><a href="#nonterminals">Nonterminal symbols</a></li> </ul> </li> <li><a href="#automaton">Automaton</a></li> </ul> <xsl:apply-templates select="grammar" mode="reductions"/> <xsl:apply-templates select="grammar" mode="useless-in-parser"/> <xsl:apply-templates select="automaton" mode="conflicts"/> <xsl:apply-templates select="grammar"/> <xsl:apply-templates select="automaton"/> </xsl:template> <xsl:template match="grammar" mode="reductions"> <h2> <a name="reductions"/> <xsl:text> Reductions</xsl:text> </h2> <xsl:apply-templates select="nonterminals" mode="useless-in-grammar"/> <xsl:apply-templates select="terminals" mode="unused-in-grammar"/> <xsl:apply-templates select="rules" mode="useless-in-grammar"/> </xsl:template> <xsl:template match="nonterminals" mode="useless-in-grammar"> <h3> <a name="nonterminals_useless_in_grammar"/> <xsl:text> Nonterminals useless in grammar</xsl:text> </h3> <xsl:text> </xsl:text> <xsl:if test="nonterminal[@usefulness='useless-in-grammar']"> <p class="pre"> <xsl:for-each select="nonterminal[@usefulness='useless-in-grammar']"> <xsl:text> </xsl:text> <xsl:value-of select="@name"/> <xsl:text> </xsl:text> </xsl:for-each> <xsl:text> </xsl:text> </p> </xsl:if> </xsl:template> <xsl:template match="terminals" mode="unused-in-grammar"> <h3> <a name="terminals_unused_in_grammar"/> <xsl:text> Terminals unused in grammar</xsl:text> </h3> <xsl:text> </xsl:text> <xsl:if test="terminal[@usefulness='unused-in-grammar']"> <p class="pre"> <xsl:for-each select="terminal[@usefulness='unused-in-grammar']"> <xsl:sort select="@symbol-number" data-type="number"/> <xsl:text> </xsl:text> <xsl:value-of select="@name"/> <xsl:text> </xsl:text> </xsl:for-each> <xsl:text> </xsl:text> </p> </xsl:if> </xsl:template> <xsl:template match="rules" mode="useless-in-grammar"> <h3> <a name="rules_useless_in_grammar"/> <xsl:text> Rules useless in grammar</xsl:text> </h3> <xsl:text> </xsl:text> <xsl:variable name="set" select="rule[@usefulness='useless-in-grammar']"/> <xsl:if test="$set"> <p class="pre"> <xsl:call-template name="style-rule-set"> <xsl:with-param name="rule-set" select="$set"/> </xsl:call-template> <xsl:text> </xsl:text> </p> </xsl:if> </xsl:template> <xsl:template match="grammar" mode="useless-in-parser"> <xsl:variable name="set" select="rules/rule[@usefulness='useless-in-parser']" /> <xsl:if test="$set"> <h2> <a name="rules_useless_in_parser"/> <xsl:text> Rules useless in parser due to conflicts</xsl:text> </h2> <xsl:text> </xsl:text> <p class="pre"> <xsl:call-template name="style-rule-set"> <xsl:with-param name="rule-set" select="$set"/> </xsl:call-template> </p> <xsl:text> </xsl:text> </xsl:if> </xsl:template> <xsl:template match="grammar"> <h2> <a name="grammar"/> <xsl:text> Grammar</xsl:text> </h2> <xsl:text> </xsl:text> <p class="pre"> <xsl:call-template name="style-rule-set"> <xsl:with-param name="anchor" select="'true'" /> <xsl:with-param name="rule-set" select="rules/rule[@usefulness!='useless-in-grammar']" /> </xsl:call-template> </p> <xsl:text> </xsl:text> <xsl:apply-templates select="terminals"/> <xsl:apply-templates select="nonterminals"/> </xsl:template> <xsl:template name="style-rule-set"> <xsl:param name="anchor"/> <xsl:param name="rule-set"/> <xsl:for-each select="$rule-set"> <xsl:apply-templates select="."> <xsl:with-param name="anchor" select="$anchor"/> <xsl:with-param name="pad" select="'3'"/> <xsl:with-param name="prev-lhs"> <xsl:if test="position()>1"> <xsl:variable name="position" select="position()"/> <xsl:value-of select="$rule-set[$position - 1]/lhs"/> </xsl:if> </xsl:with-param> </xsl:apply-templates> </xsl:for-each> </xsl:template> <xsl:template match="automaton" mode="conflicts"> <h2> <a name="conflicts"/> <xsl:text> Conflicts</xsl:text> </h2> <xsl:text> </xsl:text> <xsl:variable name="conflict-report"> <xsl:apply-templates select="state" mode="conflicts"/> </xsl:variable> <xsl:if test="string-length($conflict-report) != 0"> <p class="pre"> <xsl:copy-of select="$conflict-report"/> <xsl:text> </xsl:text> </p> </xsl:if> </xsl:template> <xsl:template match="state" mode="conflicts"> <xsl:variable name="conflict-counts"> <xsl:apply-templates select="." mode="bison:count-conflicts" /> </xsl:variable> <xsl:variable name="sr-count" select="substring-before($conflict-counts, ',')" /> <xsl:variable name="rr-count" select="substring-after($conflict-counts, ',')" /> <xsl:if test="$sr-count > 0 or $rr-count > 0"> <a> <xsl:attribute name="href"> <xsl:value-of select="concat('#state_', @number)"/> </xsl:attribute> <xsl:value-of select="concat('State ', @number)"/> </a> <xsl:text> conflicts:</xsl:text> <xsl:if test="$sr-count > 0"> <xsl:value-of select="concat(' ', $sr-count, ' shift/reduce')"/> <xsl:if test="$rr-count > 0"> <xsl:value-of select="(',')"/> </xsl:if> </xsl:if> <xsl:if test="$rr-count > 0"> <xsl:value-of select="concat(' ', $rr-count, ' reduce/reduce')"/> </xsl:if> <xsl:value-of select="' '"/> </xsl:if> </xsl:template> <xsl:template match="grammar/terminals"> <h3> <a name="terminals"/> <xsl:text> Terminals, with rules where they appear</xsl:text> </h3> <xsl:text> </xsl:text> <ul> <xsl:text> </xsl:text> <xsl:apply-templates select="terminal"/> </ul> <xsl:text> </xsl:text> </xsl:template> <xsl:template match="grammar/nonterminals"> <h3> <a name="nonterminals"/> <xsl:text> Nonterminals, with rules where they appear</xsl:text> </h3> <xsl:text> </xsl:text> <ul> <xsl:text> </xsl:text> <xsl:apply-templates select="nonterminal[@usefulness!='useless-in-grammar']" /> </ul> </xsl:template> <xsl:template match="terminal"> <xsl:text> </xsl:text> <li> <b><xsl:value-of select="@name"/></b> <xsl:if test="string-length(@type) != 0"> <xsl:value-of select="concat(' <', @type, '>')"/> </xsl:if> <xsl:value-of select="concat(' (', @token-number, ')')"/> <xsl:for-each select="key('bison:ruleByRhs', @name)"> <xsl:apply-templates select="." mode="number-link"/> </xsl:for-each> </li> <xsl:text> </xsl:text> </xsl:template> <xsl:template match="nonterminal"> <xsl:text> </xsl:text> <li> <b><xsl:value-of select="@name"/></b> <xsl:if test="string-length(@type) != 0"> <xsl:value-of select="concat(' <', @type, '>')"/> </xsl:if> <xsl:value-of select="concat(' (', @symbol-number, ')')"/> <xsl:text> </xsl:text> <ul> <xsl:text> </xsl:text> <xsl:if test="key('bison:ruleByLhs', @name)"> <xsl:text> </xsl:text> <li> <xsl:text>on left:</xsl:text> <xsl:for-each select="key('bison:ruleByLhs', @name)"> <xsl:apply-templates select="." mode="number-link"/> </xsl:for-each> </li> <xsl:text> </xsl:text> </xsl:if> <xsl:if test="key('bison:ruleByRhs', @name)"> <xsl:text> </xsl:text> <li> <xsl:text>on right:</xsl:text> <xsl:for-each select="key('bison:ruleByRhs', @name)"> <xsl:apply-templates select="." mode="number-link"/> </xsl:for-each> </li> <xsl:text> </xsl:text> </xsl:if> <xsl:text> </xsl:text> </ul> <xsl:text> </xsl:text> </li> <xsl:text> </xsl:text> </xsl:template> <xsl:template match="rule" mode="number-link"> <xsl:text> </xsl:text> <a> <xsl:attribute name="href"> <xsl:value-of select="concat('#rule_', @number)"/> </xsl:attribute> <xsl:value-of select="@number"/> </a> </xsl:template> <xsl:template match="automaton"> <h2> <a name="automaton"/> <xsl:text> Automaton</xsl:text> </h2> <xsl:apply-templates select="state"> <xsl:with-param name="pad" select="'3'"/> </xsl:apply-templates> </xsl:template> <xsl:template match="automaton/state"> <xsl:param name="pad"/> <xsl:text> </xsl:text> <h3> <a> <xsl:attribute name="name"> <xsl:value-of select="concat('state_', @number)"/> </xsl:attribute> </a> <xsl:text>State </xsl:text> <xsl:value-of select="@number"/> </h3> <xsl:text> </xsl:text> <p class="pre"> <xsl:apply-templates select="itemset/item"> <xsl:with-param name="pad" select="$pad"/> </xsl:apply-templates> <xsl:apply-templates select="actions/transitions"> <xsl:with-param name="type" select="'shift'"/> </xsl:apply-templates> <xsl:apply-templates select="actions/errors"/> <xsl:apply-templates select="actions/reductions"/> <xsl:apply-templates select="actions/transitions"> <xsl:with-param name="type" select="'goto'"/> </xsl:apply-templates> <xsl:apply-templates select="solved-conflicts"/> </p> </xsl:template> <xsl:template match="actions/transitions"> <xsl:param name="type"/> <xsl:if test="transition[@type = $type]"> <xsl:text> </xsl:text> <xsl:apply-templates select="transition[@type = $type]"> <xsl:with-param name="pad"> <xsl:call-template name="max-width-symbol"> <xsl:with-param name="node" select="transition[@type = $type]"/> </xsl:call-template> </xsl:with-param> </xsl:apply-templates> </xsl:if> </xsl:template> <xsl:template match="actions/errors"> <xsl:if test="error"> <xsl:text> </xsl:text> <xsl:apply-templates select="error"> <xsl:with-param name="pad"> <xsl:call-template name="max-width-symbol"> <xsl:with-param name="node" select="error"/> </xsl:call-template> </xsl:with-param> </xsl:apply-templates> </xsl:if> </xsl:template> <xsl:template match="actions/reductions"> <xsl:if test="reduction"> <xsl:text> </xsl:text> <xsl:apply-templates select="reduction"> <xsl:with-param name="pad"> <xsl:call-template name="max-width-symbol"> <xsl:with-param name="node" select="reduction"/> </xsl:call-template> </xsl:with-param> </xsl:apply-templates> </xsl:if> </xsl:template> <xsl:template match="item"> <xsl:param name="pad"/> <xsl:param name="prev-rule-number" select="preceding-sibling::item[1]/@rule-number"/> <xsl:apply-templates select="key('bison:ruleByNumber', current()/@rule-number)" > <xsl:with-param name="itemset" select="'true'"/> <xsl:with-param name="pad" select="$pad"/> <xsl:with-param name="prev-lhs" select="key('bison:ruleByNumber', $prev-rule-number)/lhs[text()]" /> <xsl:with-param name="dot" select="@dot"/> <xsl:with-param name="lookaheads"> <xsl:apply-templates select="lookaheads"/> </xsl:with-param> </xsl:apply-templates> </xsl:template> <!-- anchor = 'true': define as an <a> anchor. itemset = 'true': show the items. --> <xsl:template match="rule"> <xsl:param name="anchor"/> <xsl:param name="itemset"/> <xsl:param name="pad"/> <xsl:param name="prev-lhs"/> <xsl:param name="dot"/> <xsl:param name="lookaheads"/> <xsl:if test="$itemset != 'true' and not($prev-lhs = lhs[text()])"> <xsl:text> </xsl:text> </xsl:if> <xsl:text> </xsl:text> <xsl:choose> <xsl:when test="$anchor = 'true'"> <a> <xsl:attribute name="name"> <xsl:value-of select="concat('rule_', @number)"/> </xsl:attribute> <xsl:call-template name="lpad"> <xsl:with-param name="str" select="string(@number)"/> <xsl:with-param name="pad" select="number($pad)"/> </xsl:call-template> </a> </xsl:when> <xsl:otherwise> <a> <xsl:attribute name="href"> <xsl:value-of select="concat('#rule_', @number)"/> </xsl:attribute> <xsl:call-template name="lpad"> <xsl:with-param name="str" select="string(@number)"/> <xsl:with-param name="pad" select="number($pad)"/> </xsl:call-template> </a> </xsl:otherwise> </xsl:choose> <xsl:text> </xsl:text> <!-- LHS --> <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()])) + 2"/> </xsl:call-template> </xsl:when> <xsl:otherwise> <span class="i"> <xsl:value-of select="lhs"/> </span> <xsl:text> →</xsl:text> </xsl:otherwise> </xsl:choose> <!-- RHS --> <xsl:for-each select="rhs/*"> <xsl:if test="position() = $dot + 1"> <xsl:text> </xsl:text> <span class="dot">•</span> </xsl:if> <xsl:apply-templates select="."/> <xsl:if test="position() = last() and position() = $dot"> <xsl:text> </xsl:text> <span class="dot">•</span> </xsl:if> </xsl:for-each> <xsl:if test="$lookaheads"> <xsl:value-of select="$lookaheads"/> </xsl:if> <xsl:text> </xsl:text> </xsl:template> <xsl:template match="symbol"> <xsl:text> </xsl:text> <xsl:choose> <xsl:when test="name(key('bison:symbolByName', .)) = 'nonterminal'"> <span class="i"><xsl:value-of select="."/></span> </xsl:when> <xsl:otherwise> <b><xsl:value-of select="."/></b> </xsl:otherwise> </xsl:choose> </xsl:template> <xsl:template match="empty"> <xsl:text> %empty</xsl:text> </xsl:template> <xsl:template match="lookaheads"> <xsl:text> [</xsl:text> <xsl:apply-templates select="symbol"/> <xsl:text>]</xsl:text> </xsl:template> <xsl:template match="lookaheads/symbol"> <xsl:value-of select="."/> <xsl:if test="position() != last()"> <xsl:text>, </xsl:text> </xsl:if> </xsl:template> <xsl:template match="transition"> <xsl:param name="pad"/> <xsl:text> </xsl:text> <xsl:call-template name="rpad"> <xsl:with-param name="str" select="string(@symbol)"/> <xsl:with-param name="pad" select="number($pad) + 2"/> </xsl:call-template> <xsl:choose> <xsl:when test="@type = 'shift'"> <a> <xsl:attribute name="href"> <xsl:value-of select="concat('#state_', @state)"/> </xsl:attribute> <xsl:value-of select="concat('shift, and go to state ', @state)"/> </a> </xsl:when> <xsl:when test="@type = 'goto'"> <a> <xsl:attribute name="href"> <xsl:value-of select="concat('#state_', @state)"/> </xsl:attribute> <xsl:value-of select="concat('go to state ', @state)"/> </a> </xsl:when> </xsl:choose> <xsl:text> </xsl:text> </xsl:template> <xsl:template match="error"> <xsl:param name="pad"/> <xsl:text> </xsl:text> <xsl:call-template name="rpad"> <xsl:with-param name="str" select="string(@symbol)"/> <xsl:with-param name="pad" select="number($pad) + 2"/> </xsl:call-template> <xsl:text>error</xsl:text> <xsl:text> (</xsl:text> <xsl:value-of select="text()"/> <xsl:text>)</xsl:text> <xsl:text> </xsl:text> </xsl:template> <xsl:template match="reduction"> <xsl:param name="pad"/> <xsl:text> </xsl:text> <xsl:call-template name="rpad"> <xsl:with-param name="str" select="string(@symbol)"/> <xsl:with-param name="pad" select="number($pad) + 2"/> </xsl:call-template> <xsl:if test="@enabled = 'false'"> <xsl:text>[</xsl:text> </xsl:if> <xsl:choose> <xsl:when test="@rule = 'accept'"> <xsl:text>accept</xsl:text> </xsl:when> <xsl:otherwise> <a> <xsl:attribute name="href"> <xsl:value-of select="concat('#rule_', @rule)"/> </xsl:attribute> <xsl:value-of select="concat('reduce using rule ', @rule)"/> </a> <xsl:text> (</xsl:text> <xsl:value-of select="key('bison:ruleByNumber', current()/@rule)/lhs[text()]" /> <xsl:text>)</xsl:text> </xsl:otherwise> </xsl:choose> <xsl:if test="@enabled = 'false'"> <xsl:text>]</xsl:text> </xsl:if> <xsl:text> </xsl:text> </xsl:template> <xsl:template match="solved-conflicts"> <xsl:if test="resolution"> <xsl:text> </xsl:text> <xsl:apply-templates select="resolution"/> </xsl:if> </xsl:template> <xsl:template match="resolution"> <xsl:text> Conflict between </xsl:text> <a> <xsl:attribute name="href"> <xsl:value-of select="concat('#rule_', @rule)"/> </xsl:attribute> <xsl:value-of select="concat('rule ',@rule)"/> </a> <xsl:text> and token </xsl:text> <xsl:value-of select="@symbol"/> <xsl:text> resolved as </xsl:text> <xsl:if test="@type = 'error'"> <xsl:text>an </xsl:text> </xsl:if> <xsl:value-of select="@type"/> <xsl:text> (</xsl:text> <xsl:value-of select="."/> <xsl:text>). </xsl:text> </xsl:template> <xsl:template name="max-width-symbol"> <xsl:param name="node"/> <xsl:variable name="longest"> <xsl:for-each select="$node"> <xsl:sort data-type="number" select="string-length(@symbol)" order="descending"/> <xsl:if test="position() = 1"> <xsl:value-of select="string-length(@symbol)"/> </xsl:if> </xsl:for-each> </xsl:variable> <xsl:value-of select="$longest"/> </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:template> <xsl:template name="rpad"> <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:value-of select="$str"/> <xsl:call-template name="space"> <xsl:with-param name="repeat" select="$diff"/> </xsl:call-template> </xsl:otherwise> </xsl:choose> </xsl:template> <xsl:template name="space"> <xsl:param name="repeat">0</xsl:param> <xsl:param name="fill" select="' '"/> <xsl:if test="number($repeat) >= 1"> <xsl:call-template name="space"> <xsl:with-param name="repeat" select="$repeat - 1"/> <xsl:with-param name="fill" select="$fill"/> </xsl:call-template> <xsl:value-of select="$fill"/> </xsl:if> </xsl:template> </xsl:stylesheet>