xml2text.xsl
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<?xml version="1.0" encoding="UTF-8"?> <!-- xml2text.xsl - transform Bison XML Report into plain text. 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: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"> <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"> <xsl:if test="nonterminal[@usefulness='useless-in-grammar']"> <xsl:text>Nonterminals useless in grammar </xsl:text> <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> </xsl:if> </xsl:template> <xsl:template match="terminals" mode="unused-in-grammar"> <xsl:if test="terminal[@usefulness='unused-in-grammar']"> <xsl:text>Terminals unused in grammar </xsl:text> <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> </xsl:if> </xsl:template> <xsl:template match="rules" mode="useless-in-grammar"> <xsl:variable name="set" select="rule[@usefulness='useless-in-grammar']"/> <xsl:if test="$set"> <xsl:text>Rules useless in grammar </xsl:text> <xsl:call-template name="style-rule-set"> <xsl:with-param name="rule-set" select="$set"/> </xsl:call-template> <xsl:text> </xsl:text> </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="$set"> <xsl:text>Rules useless in parser due to conflicts </xsl:text> <xsl:call-template name="style-rule-set"> <xsl:with-param name="rule-set" select="$set"/> </xsl:call-template> <xsl:text> </xsl:text> </xsl:if> </xsl:template> <xsl:template match="grammar"> <xsl:text>Grammar </xsl:text> <xsl:call-template name="style-rule-set"> <xsl:with-param name="rule-set" select="rules/rule[@usefulness!='useless-in-grammar']" /> </xsl:call-template> <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="rule-set"/> <xsl:for-each select="$rule-set"> <xsl:apply-templates select="."> <xsl:with-param name="pad" select="'3'"/> <xsl:with-param name="prev-lhs"> <xsl:if test="position()>1"> <xsl:variable name="position" select="position()"/> <xsl:value-of select="$rule-set[$position - 1]/lhs"/> </xsl:if> </xsl:with-param> </xsl:apply-templates> </xsl:for-each> </xsl:template> <xsl:template match="grammar/terminals"> <xsl:text>Terminals, with rules where they appear </xsl:text> <xsl:apply-templates select="terminal"/> <xsl:text> </xsl:text> </xsl:template> <xsl:template match="grammar/nonterminals"> <xsl:text>Nonterminals, with rules where they appear </xsl:text> <xsl:apply-templates select="nonterminal[@usefulness!='useless-in-grammar']"/> </xsl:template> <xsl:template match="terminal"> <xsl:value-of select="@name"/> <xsl:call-template name="line-wrap"> <xsl:with-param name="first-line-length"> <xsl:choose> <xsl:when test="string-length(@name) > 66">0</xsl:when> <xsl:otherwise> <xsl:value-of select="66 - string-length(@name)" /> </xsl:otherwise> </xsl:choose> </xsl:with-param> <xsl:with-param name="line-length" select="66" /> <xsl:with-param name="text"> <xsl:value-of select="concat(' (', @token-number, ')')"/> <xsl:for-each select="key('bison:ruleByRhs', @name)"> <xsl:value-of select="concat(' ', @number)"/> </xsl:for-each> </xsl:with-param> </xsl:call-template> </xsl:template> <xsl:template match="nonterminal"> <xsl:value-of select="@name"/> <xsl:value-of select="concat(' (', @symbol-number, ')')"/> <xsl:text> </xsl:text> <xsl:variable name="output"> <xsl:call-template name="line-wrap"> <xsl:with-param name="line-length" select="66" /> <xsl:with-param name="text"> <xsl:text> </xsl:text> <xsl:if test="key('bison:ruleByLhs', @name)"> <xsl:text>on@left:</xsl:text> <xsl:for-each select="key('bison:ruleByLhs', @name)"> <xsl:value-of select="concat(' ', @number)"/> </xsl:for-each> </xsl:if> <xsl:if test="key('bison:ruleByRhs', @name)"> <xsl:if test="key('bison:ruleByLhs', @name)"> <xsl:text>, </xsl:text> </xsl:if> <xsl:text>on@right:</xsl:text> <xsl:for-each select="key('bison:ruleByRhs', @name)"> <xsl:value-of select="concat(' ', @number)"/> </xsl:for-each> </xsl:if> </xsl:with-param> </xsl:call-template> </xsl:variable> <xsl:value-of select="translate($output, '@', ' ')" /> </xsl:template> <xsl:template match="automaton" mode="conflicts"> <xsl:variable name="conflict-report"> <xsl:apply-templates select="state" mode="conflicts"/> </xsl:variable> <xsl:if test="string-length($conflict-report) != 0"> <xsl:value-of select="$conflict-report"/> <xsl:text> </xsl:text> </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 $rr-count > 0"> <xsl:value-of select="concat('State ', @number, ' conflicts:')"/> <xsl:if test="$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(' ', $rr-count, ' reduce/reduce')"/> </xsl:if> <xsl:value-of select="' '"/> </xsl:if> </xsl:template> <xsl:template match="automaton"> <xsl:apply-templates select="state"> <xsl:with-param name="pad" select="'3'"/> </xsl:apply-templates> </xsl:template> <xsl:template match="automaton/state"> <xsl:param name="pad"/> <xsl:text> </xsl:text> <xsl:text>State </xsl:text> <xsl:value-of select="@number"/> <xsl:text> </xsl:text> <xsl:apply-templates select="itemset/item"> <xsl:with-param name="pad" select="$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"/> </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', $prev-rule-number)/lhs[text()]" /> <xsl:with-param name="point" select="@point"/> <xsl:with-param name="lookaheads"> <xsl:apply-templates select="lookaheads"/> </xsl:with-param> </xsl:apply-templates> </xsl:template> <xsl:template match="rule"> <xsl:param name="itemset"/> <xsl:param name="pad"/> <xsl:param name="prev-lhs"/> <xsl:param name="point"/> <xsl:param name="lookaheads"/> <xsl:if test="$itemset != 'true' and not($prev-lhs = lhs[text()])"> <xsl:text> </xsl:text> </xsl:if> <xsl:text> </xsl:text> <xsl:call-template name="lpad"> <xsl:with-param name="str" select="string(@number)"/> <xsl:with-param name="pad" select="number($pad)"/> </xsl:call-template> <xsl:text> </xsl:text> <!-- LHS --> <xsl:choose> <xsl:when test="$itemset != 'true' and $prev-lhs = lhs[text()]"> <xsl:call-template name="lpad"> <xsl:with-param name="str" select="'|'"/> <xsl:with-param name="pad" select="number(string-length(lhs[text()])) + 1"/> </xsl:call-template> </xsl:when> <xsl:when test="$itemset = 'true' and $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> <!-- RHS --> <xsl:for-each select="rhs/*"> <xsl:if test="position() = $point + 1"> <xsl:text> .</xsl:text> </xsl:if> <xsl:apply-templates select="."/> <xsl:if test="position() = last() and position() = $point"> <xsl:text> .</xsl:text> </xsl:if> </xsl:for-each> <xsl:if test="$lookaheads"> <xsl:value-of select="$lookaheads"/> </xsl:if> <xsl:text> </xsl:text> </xsl:template> <xsl:template match="symbol"> <xsl:text> </xsl:text> <xsl:value-of select="."/> </xsl:template> <xsl:template match="empty"> <xsl:text> %empty</xsl:text> </xsl:template> <xsl:template match="lookaheads"> <xsl:text> [</xsl:text> <xsl:apply-templates select="symbol"/> <xsl:text>]</xsl:text> </xsl:template> <xsl:template match="lookaheads/symbol"> <xsl:value-of select="."/> <xsl:if test="position() != last()"> <xsl:text>, </xsl:text> </xsl:if> </xsl:template> <xsl:template match="transition"> <xsl:param name="pad"/> <xsl:text> </xsl:text> <xsl:call-template name="rpad"> <xsl:with-param name="str" select="string(@symbol)"/> <xsl:with-param name="pad" select="number($pad) + 2"/> </xsl:call-template> <xsl:choose> <xsl:when test="@type = 'shift'"> <xsl:text>shift, and go to state </xsl:text> <xsl:value-of select="@state"/> </xsl:when> <xsl:when test="@type = 'goto'"> <xsl:text>go to state </xsl:text> <xsl:value-of select="@state"/> </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> <xsl:text>reduce using rule </xsl:text> <xsl:value-of select="@rule"/> <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 rule </xsl:text> <xsl:value-of select="@rule"/> <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="line-wrap"> <xsl:param name="line-length"/> <!-- required --> <xsl:param name="first-line-length" select="$line-length"/> <xsl:param name="text"/> <!-- required --> <xsl:choose> <xsl:when test="normalize-space($text) = ''" /> <xsl:when test="string-length($text) <= $first-line-length"> <xsl:value-of select="concat($text, ' ')" /> </xsl:when> <xsl:otherwise> <xsl:variable name="break-pos"> <xsl:call-template name="ws-search"> <xsl:with-param name="text" select="$text" /> <xsl:with-param name="start" select="$first-line-length+1" /> </xsl:call-template> </xsl:variable> <xsl:value-of select="substring($text, 1, $break-pos - 1)" /> <xsl:text> </xsl:text> <xsl:call-template name="line-wrap"> <xsl:with-param name="line-length" select="$line-length" /> <xsl:with-param name="text" select="concat(' ', substring($text, $break-pos+1))" /> </xsl:call-template> </xsl:otherwise> </xsl:choose> </xsl:template> <xsl:template name="ws-search"> <xsl:param name="text"/> <!-- required --> <xsl:param name="start"/> <!-- required --> <xsl:variable name="search-text" select="substring($text, $start)" /> <xsl:choose> <xsl:when test="not(contains($search-text, ' '))"> <xsl:value-of select="string-length($text)+1" /> </xsl:when> <xsl:otherwise> <xsl:value-of select="$start + string-length(substring-before($search-text, ' '))" /> </xsl:otherwise> </xsl:choose> </xsl:template> </xsl:stylesheet>
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