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+<?xml version='1.0'?>
+<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
+ xmlns:doc="http://nwalsh.com/xsl/documentation/1.0"
+ exclude-result-prefixes="doc"
+ version='1.0'>
+
+<!-- ********************************************************************
+ $Id: ebnf.xsl 9358 2012-05-12 23:37:10Z bobstayton $
+ ********************************************************************
+
+ This file is part of the XSL DocBook Stylesheet distribution.
+ See ../README or http://docbook.sf.net/release/xsl/current/ for
+ copyright and other information.
+
+ ******************************************************************** -->
+
+<doc:reference xmlns="">
+<referenceinfo>
+<releaseinfo role="meta">
+$Id: ebnf.xsl 9358 2012-05-12 23:37:10Z bobstayton $
+</releaseinfo>
+<author><surname>Walsh</surname>
+<firstname>Norman</firstname></author>
+<copyright><year>1999</year><year>2000</year>
+<holder>Norman Walsh</holder>
+</copyright>
+</referenceinfo>
+<title>HTML EBNF Reference</title>
+
+<partintro>
+<section><title>Introduction</title>
+
+<para>This is technical reference documentation for the DocBook XSL
+Stylesheets; it documents (some of) the parameters, templates, and
+other elements of the stylesheets.</para>
+
+<para>This reference describes the templates and parameters relevant
+to formatting EBNF markup.</para>
+
+<para>This is not intended to be <quote>user</quote> documentation.
+It is provided for developers writing customization layers for the
+stylesheets, and for anyone who's interested in <quote>how it
+works</quote>.</para>
+
+<para>Although I am trying to be thorough, this documentation is known
+to be incomplete. Don't forget to read the source, too :-)</para>
+</section>
+</partintro>
+</doc:reference>
+
+<!-- ==================================================================== -->
+
+<xsl:template match="productionset">
+ <table width="100%" cellpadding="5">
+ <xsl:if test="$ebnf.table.bgcolor != ''">
+ <xsl:attribute name="bgcolor">
+ <xsl:value-of select="$ebnf.table.bgcolor"/>
+ </xsl:attribute>
+ </xsl:if>
+ <xsl:if test="$ebnf.table.border != 0">
+ <xsl:attribute name="border">1</xsl:attribute>
+ </xsl:if>
+ <xsl:attribute name="class">
+ <xsl:value-of select="local-name(.)"/>
+ </xsl:attribute>
+ <xsl:attribute name="summary">
+ <xsl:text>EBNF</xsl:text>
+ <xsl:if test="title|info/title">
+ <xsl:text> for </xsl:text>
+ <xsl:value-of select="title|info/title[1]"/>
+ </xsl:if>
+ </xsl:attribute>
+
+ <xsl:if test="title|info/title">
+ <tr>
+ <th align="{$direction.align.start}" valign="top">
+ <xsl:apply-templates select="." mode="class.attribute"/>
+ <xsl:apply-templates select="title|info/title[1]"/>
+ </th>
+ </tr>
+ </xsl:if>
+ <tr>
+ <td>
+ <table border="0" width="99%" cellpadding="0">
+ <xsl:if test="$ebnf.table.bgcolor != ''">
+ <xsl:attribute name="bgcolor">
+ <xsl:value-of select="$ebnf.table.bgcolor"/>
+ </xsl:attribute>
+ </xsl:if>
+ <xsl:attribute name="class">
+ <xsl:value-of select="local-name(.)"/>
+ </xsl:attribute>
+ <xsl:attribute name="summary">EBNF productions</xsl:attribute>
+ <xsl:apply-templates select="production|productionrecap"/>
+ </table>
+ </td>
+ </tr>
+ </table>
+</xsl:template>
+
+<xsl:template match="productionset/title">
+ <xsl:apply-templates/>
+</xsl:template>
+
+<xsl:template match="production">
+ <xsl:param name="recap" select="false()"/>
+ <tr>
+ <td align="{$direction.align.start}" valign="top" width="3%">
+ <xsl:text>[</xsl:text>
+ <xsl:number count="production" level="any"/>
+ <xsl:text>]</xsl:text>
+ </td>
+ <td align="{$direction.align.end}" valign="top" width="10%">
+ <xsl:choose>
+ <xsl:when test="$recap">
+ <a>
+ <xsl:attribute name="href">
+ <xsl:call-template name="href.target">
+ <xsl:with-param name="object" select="."/>
+ </xsl:call-template>
+ </xsl:attribute>
+ <xsl:apply-templates select="lhs"/>
+ </a>
+ </xsl:when>
+ <xsl:otherwise>
+ <xsl:call-template name="id.attribute"/>
+ <xsl:call-template name="anchor"/>
+ <xsl:apply-templates select="lhs"/>
+ </xsl:otherwise>
+ </xsl:choose>
+ </td>
+ <td valign="top" width="5%" align="center">
+ <xsl:copy-of select="$ebnf.assignment"/>
+ </td>
+ <td valign="top" width="52%">
+ <xsl:apply-templates select="rhs"/>
+ <xsl:copy-of select="$ebnf.statement.terminator"/>
+ </td>
+ <td align="{$direction.align.start}" valign="top" width="30%">
+ <xsl:choose>
+ <xsl:when test="rhs/lineannotation|constraint">
+ <xsl:apply-templates select="rhs/lineannotation" mode="rhslo"/>
+ <xsl:apply-templates select="constraint"/>
+ </xsl:when>
+ <xsl:otherwise>
+ <xsl:text>&#160;</xsl:text>
+ </xsl:otherwise>
+ </xsl:choose>
+ </td>
+ </tr>
+</xsl:template>
+
+<xsl:template match="productionrecap">
+ <xsl:variable name="targets" select="key('id',@linkend)"/>
+ <xsl:variable name="target" select="$targets[1]"/>
+
+ <xsl:if test="count($targets)=0">
+ <xsl:message>
+ <xsl:text>Error: no ID for productionrecap linkend: </xsl:text>
+ <xsl:value-of select="@linkend"/>
+ <xsl:text>.</xsl:text>
+ </xsl:message>
+ </xsl:if>
+
+ <xsl:if test="count($targets)>1">
+ <xsl:message>
+ <xsl:text>Warning: multiple "IDs" for productionrecap linkend: </xsl:text>
+ <xsl:value-of select="@linkend"/>
+ <xsl:text>.</xsl:text>
+ </xsl:message>
+ </xsl:if>
+
+ <xsl:apply-templates select="$target">
+ <xsl:with-param name="recap" select="true()"/>
+ </xsl:apply-templates>
+</xsl:template>
+
+<xsl:template match="lhs">
+ <xsl:apply-templates/>
+</xsl:template>
+
+<xsl:template match="rhs">
+ <xsl:apply-templates/>
+ <xsl:if test="following-sibling::rhs">
+ <xsl:text> |</xsl:text>
+ <br/>
+ </xsl:if>
+</xsl:template>
+
+<xsl:template match="nonterminal">
+ <xsl:variable name="linkend">
+ <xsl:call-template name="xpointer.idref">
+ <xsl:with-param name="xpointer" select="@def"/>
+ </xsl:call-template>
+ </xsl:variable>
+
+ <xsl:call-template name="check.id.unique">
+ <xsl:with-param name="linkend" select="$linkend"/>
+ </xsl:call-template>
+
+ <xsl:call-template name="check.idref.targets">
+ <xsl:with-param name="linkend" select="$linkend"/>
+ <xsl:with-param name="element-list">production</xsl:with-param>
+ </xsl:call-template>
+
+ <!-- If you don't provide content, you can't point outside this doc. -->
+ <xsl:choose>
+ <xsl:when test="*|text()"><!--nop--></xsl:when>
+ <xsl:otherwise>
+ <xsl:if test="$linkend = ''">
+ <xsl:message>
+ <xsl:text>Non-terminals with no content must point to </xsl:text>
+ <xsl:text>production elements in the current document.</xsl:text>
+ </xsl:message>
+ <xsl:message>
+ <xsl:text>Invalid xpointer for empty nt: </xsl:text>
+ <xsl:value-of select="@def"/>
+ </xsl:message>
+ </xsl:if>
+ </xsl:otherwise>
+ </xsl:choose>
+
+ <xsl:variable name="href">
+ <xsl:choose>
+ <xsl:when test="$linkend != ''">
+ <xsl:variable name="targets" select="key('id',$linkend)"/>
+ <xsl:variable name="target" select="$targets[1]"/>
+ <xsl:call-template name="href.target">
+ <xsl:with-param name="object" select="$target"/>
+ </xsl:call-template>
+ </xsl:when>
+ <xsl:otherwise>
+ <xsl:value-of select="@def"/>
+ </xsl:otherwise>
+ </xsl:choose>
+ </xsl:variable>
+
+ <a href="{$href}">
+ <xsl:choose>
+ <xsl:when test="*|text()">
+ <xsl:apply-templates/>
+ </xsl:when>
+ <xsl:otherwise>
+ <xsl:choose>
+ <xsl:when test="$linkend != ''">
+ <xsl:variable name="targets" select="key('id',$linkend)"/>
+ <xsl:variable name="target" select="$targets[1]"/>
+ <xsl:apply-templates select="$target/lhs"/>
+ </xsl:when>
+ <xsl:otherwise>
+ <xsl:text>???</xsl:text>
+ </xsl:otherwise>
+ </xsl:choose>
+ </xsl:otherwise>
+ </xsl:choose>
+ </a>
+</xsl:template>
+
+<xsl:template match="rhs/lineannotation">
+ <!--nop-->
+</xsl:template>
+
+<xsl:template match="rhs/lineannotation" mode="rhslo">
+ <xsl:text>/*&#160;</xsl:text>
+ <xsl:apply-templates/>
+ <xsl:text>&#160;*/</xsl:text>
+ <br/>
+</xsl:template>
+
+<xsl:template match="constraint">
+ <xsl:call-template name="check.id.unique">
+ <xsl:with-param name="linkend" select="@linkend"/>
+ </xsl:call-template>
+
+ <xsl:call-template name="check.idref.targets">
+ <xsl:with-param name="linkend" select="@linkend"/>
+ <xsl:with-param name="element-list">constraintdef</xsl:with-param>
+ </xsl:call-template>
+
+ <xsl:variable name="href">
+ <xsl:variable name="targets" select="key('id',@linkend)"/>
+ <xsl:variable name="target" select="$targets[1]"/>
+ <xsl:call-template name="href.target">
+ <xsl:with-param name="object" select="$target"/>
+ </xsl:call-template>
+ </xsl:variable>
+
+ <xsl:text>[&#160;</xsl:text>
+
+ <xsl:choose>
+ <xsl:when test="@role">
+ <xsl:value-of select="@role"/>
+ <xsl:text>: </xsl:text>
+ </xsl:when>
+ <xsl:otherwise>
+ <xsl:variable name="targets" select="key('id',@linkend)"/>
+ <xsl:variable name="target" select="$targets[1]"/>
+ <xsl:if test="$target/@role">
+ <xsl:value-of select="$target/@role"/>
+ <xsl:text>: </xsl:text>
+ </xsl:if>
+ </xsl:otherwise>
+ </xsl:choose>
+
+ <a href="{$href}">
+ <xsl:variable name="targets" select="key('id',@linkend)"/>
+ <xsl:variable name="target" select="$targets[1]"/>
+ <xsl:apply-templates select="$target" mode="title.markup"/>
+ </a>
+ <xsl:text>&#160;]</xsl:text>
+ <xsl:if test="following-sibling::constraint">
+ <br/>
+ </xsl:if>
+</xsl:template>
+
+<xsl:template match="constraintdef">
+ <div>
+ <xsl:apply-templates select="." mode="class.attribute"/>
+ <xsl:call-template name="id.attribute"/>
+ <xsl:call-template name="anchor"/>
+ <xsl:apply-templates/>
+ </div>
+</xsl:template>
+
+<xsl:template match="constraintdef/title">
+ <p><b><xsl:apply-templates/></b></p>
+</xsl:template>
+
+<!-- ==================================================================== -->
+
+</xsl:stylesheet>