1<?xml version='1.0'?>
2<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
3                xmlns:doc="http://nwalsh.com/xsl/documentation/1.0"
4                exclude-result-prefixes="doc"
5                version='1.0'>
6
7<!-- ********************************************************************
8     $Id: ebnf.xsl,v 1.9 2003/04/12 21:08:45 nwalsh Exp $
9     ********************************************************************
10
11     This file is part of the XSL DocBook Stylesheet distribution.
12     See /README or http://nwalsh.com/docbook/xsl/ for copyright
13     and other information.
14
15     ******************************************************************** -->
16
17<doc:reference xmlns="">
18<referenceinfo>
19<releaseinfo role="meta">
20$Id: ebnf.xsl,v 1.9 2003/04/12 21:08:45 nwalsh Exp $
21</releaseinfo>
22<author><surname>Walsh</surname>
23<firstname>Norman</firstname></author>
24<copyright><year>1999</year><year>2000</year>
25<holder>Norman Walsh</holder>
26</copyright>
27</referenceinfo>
28<title>HTML EBNF Reference</title>
29
30<partintro>
31<section><title>Introduction</title>
32
33<para>This is technical reference documentation for the DocBook XSL
34Stylesheets; it documents (some of) the parameters, templates, and
35other elements of the stylesheets.</para>
36
37<para>This reference describes the templates and parameters relevant
38to formatting EBNF markup.</para>
39
40<para>This is not intended to be <quote>user</quote> documentation.
41It is provided for developers writing customization layers for the
42stylesheets, and for anyone who's interested in <quote>how it
43works</quote>.</para>
44
45<para>Although I am trying to be thorough, this documentation is known
46to be incomplete. Don't forget to read the source, too :-)</para>
47</section>
48</partintro>
49</doc:reference>
50
51<!-- ==================================================================== -->
52
53<xsl:template match="productionset">
54  <table width="100%" cellpadding="5">
55    <xsl:if test="$ebnf.table.bgcolor != ''">
56      <xsl:attribute name="bgcolor">
57	<xsl:value-of select="$ebnf.table.bgcolor"/>
58      </xsl:attribute>
59    </xsl:if>
60    <xsl:if test="$ebnf.table.border != 0">
61      <xsl:attribute name="border">1</xsl:attribute>
62    </xsl:if>
63    <xsl:attribute name="class">
64      <xsl:value-of select="name(.)"/>
65    </xsl:attribute>
66    <xsl:attribute name="summary">
67      <xsl:text>EBNF</xsl:text>
68      <xsl:if test="title">
69	<xsl:text> for </xsl:text>
70	<xsl:value-of select="title"/>
71      </xsl:if>
72    </xsl:attribute>
73
74    <xsl:if test="title">
75      <tr>
76	<th align="left" valign="top" class="{name(.)}">
77	  <xsl:apply-templates select="title"/>
78	</th>
79      </tr>
80    </xsl:if>
81    <tr>
82      <td>
83	<table border="0" width="99%" cellpadding="0">
84	  <xsl:if test="$ebnf.table.bgcolor != ''">
85	    <xsl:attribute name="bgcolor">
86	      <xsl:value-of select="$ebnf.table.bgcolor"/>
87	    </xsl:attribute>
88	  </xsl:if>
89	  <xsl:attribute name="class">
90	    <xsl:value-of select="name(.)"/>
91	  </xsl:attribute>
92	  <xsl:attribute name="summary">EBNF productions</xsl:attribute>
93	  <xsl:apply-templates select="production|productionrecap"/>
94	</table>
95      </td>
96    </tr>
97  </table>
98</xsl:template>
99
100<xsl:template match="productionset/title">
101  <xsl:apply-templates/>
102</xsl:template>
103
104<xsl:template match="production">
105  <xsl:param name="recap" select="false()"/>
106  <tr>
107    <td align="left" valign="top" width="3%">
108      <xsl:text>[</xsl:text>
109      <xsl:number count="production" level="any"/>
110      <xsl:text>]</xsl:text>
111    </td>
112    <td align="right" valign="top" width="10%">
113      <xsl:choose>
114	<xsl:when test="$recap">
115	  <a>
116	    <xsl:attribute name="href">
117	      <xsl:call-template name="href.target">
118		<xsl:with-param name="object" select="."/>
119	      </xsl:call-template>
120	    </xsl:attribute>
121	    <xsl:apply-templates select="lhs"/>
122	  </a>
123	</xsl:when>
124	<xsl:otherwise>
125          <xsl:call-template name="anchor"/>
126	  <xsl:apply-templates select="lhs"/>
127	</xsl:otherwise>
128      </xsl:choose>
129    </td>
130    <td valign="top" width="5%" align="center">
131      <xsl:copy-of select="$ebnf.assignment"/>
132    </td>
133    <td valign="top" width="52%">
134      <xsl:apply-templates select="rhs"/>
135      <xsl:copy-of select="$ebnf.statement.terminator"/>
136    </td>
137    <td align="left" valign="top" width="30%">
138      <xsl:choose>
139	<xsl:when test="rhs/lineannotation|constraint">
140          <xsl:apply-templates select="rhs/lineannotation" mode="rhslo"/>
141          <xsl:apply-templates select="constraint"/>
142	</xsl:when>
143	<xsl:otherwise>
144	  <xsl:text>&#160;</xsl:text>
145	</xsl:otherwise>
146      </xsl:choose>
147    </td>
148  </tr>
149</xsl:template>
150
151<xsl:template match="productionrecap">
152  <xsl:variable name="targets" select="key('id',@linkend)"/>
153  <xsl:variable name="target" select="$targets[1]"/>
154
155  <xsl:if test="count($targets)=0">
156    <xsl:message>
157      <xsl:text>Error: no ID for productionrecap linkend: </xsl:text>
158      <xsl:value-of select="@linkend"/>
159      <xsl:text>.</xsl:text>
160    </xsl:message>
161  </xsl:if>
162
163  <xsl:if test="count($targets)>1">
164    <xsl:message>
165      <xsl:text>Warning: multiple "IDs" for productionrecap linkend: </xsl:text>
166      <xsl:value-of select="@linkend"/>
167      <xsl:text>.</xsl:text>
168    </xsl:message>
169  </xsl:if>
170
171  <xsl:apply-templates select="$target">
172    <xsl:with-param name="recap" select="true()"/>
173  </xsl:apply-templates>
174</xsl:template>
175
176<xsl:template match="lhs">
177  <xsl:apply-templates/>
178</xsl:template>
179
180<xsl:template match="rhs">
181  <xsl:apply-templates/>
182  <xsl:if test="following-sibling::rhs">
183    <xsl:text> |</xsl:text>
184    <br/>
185  </xsl:if>
186</xsl:template>
187
188<xsl:template match="nonterminal">
189  <xsl:variable name="linkend">
190    <xsl:call-template name="xpointer.idref">
191      <xsl:with-param name="xpointer" select="@def"/>
192    </xsl:call-template>
193  </xsl:variable>
194
195  <xsl:call-template name="check.id.unique">
196    <xsl:with-param name="linkend" select="$linkend"/>
197  </xsl:call-template>
198
199  <xsl:call-template name="check.idref.targets">
200    <xsl:with-param name="linkend" select="$linkend"/>
201    <xsl:with-param name="element-list">production</xsl:with-param>
202  </xsl:call-template>
203
204  <!-- If you don't provide content, you can't point outside this doc. -->
205  <xsl:choose>
206    <xsl:when test="*|text()"><!--nop--></xsl:when>
207    <xsl:otherwise>
208      <xsl:if test="$linkend = ''">
209	<xsl:message>
210	  <xsl:text>Non-terminals with no content must point to </xsl:text>
211	  <xsl:text>production elements in the current document.</xsl:text>
212	</xsl:message>
213	<xsl:message>
214	  <xsl:text>Invalid xpointer for empty nt: </xsl:text>
215	  <xsl:value-of select="@def"/>
216	</xsl:message>
217      </xsl:if>
218    </xsl:otherwise>
219  </xsl:choose>
220
221  <xsl:variable name="href">
222    <xsl:choose>
223      <xsl:when test="$linkend != ''">
224	<xsl:variable name="targets" select="key('id',$linkend)"/>
225	<xsl:variable name="target" select="$targets[1]"/>
226	<xsl:call-template name="href.target">
227	  <xsl:with-param name="object" select="$target"/>
228	</xsl:call-template>
229      </xsl:when>
230      <xsl:otherwise>
231	<xsl:value-of select="@def"/>
232      </xsl:otherwise>
233    </xsl:choose>
234  </xsl:variable>
235
236  <a href="{$href}">
237    <xsl:choose>
238      <xsl:when test="*|text()">
239	<xsl:apply-templates/>
240      </xsl:when>
241      <xsl:otherwise>
242	<xsl:choose>
243	  <xsl:when test="$linkend != ''">
244	    <xsl:variable name="targets" select="key('id',$linkend)"/>
245	    <xsl:variable name="target" select="$targets[1]"/>
246	    <xsl:apply-templates select="$target/lhs"/>
247	  </xsl:when>
248	  <xsl:otherwise>
249	    <xsl:text>???</xsl:text>
250	  </xsl:otherwise>
251	</xsl:choose>
252      </xsl:otherwise>
253    </xsl:choose>
254  </a>
255</xsl:template>
256
257<xsl:template match="rhs/lineannotation">
258  <!--nop-->
259</xsl:template>
260
261<xsl:template match="rhs/lineannotation" mode="rhslo">
262  <xsl:text>/*&#160;</xsl:text>
263  <xsl:apply-templates/>
264  <xsl:text>&#160;*/</xsl:text>
265  <br/>
266</xsl:template>
267
268<xsl:template match="constraint">
269  <xsl:call-template name="check.id.unique">
270    <xsl:with-param name="linkend" select="@linkend"/>
271  </xsl:call-template>
272
273  <xsl:call-template name="check.idref.targets">
274    <xsl:with-param name="linkend" select="@linkend"/>
275    <xsl:with-param name="element-list">constraintdef</xsl:with-param>
276  </xsl:call-template>
277
278  <xsl:variable name="href">
279    <xsl:variable name="targets" select="key('id',@linkend)"/>
280    <xsl:variable name="target" select="$targets[1]"/>
281    <xsl:call-template name="href.target">
282      <xsl:with-param name="object" select="$target"/>
283    </xsl:call-template>
284  </xsl:variable>
285
286  <xsl:text>[&#160;</xsl:text>
287
288  <xsl:choose>
289    <xsl:when test="@role">
290      <xsl:value-of select="@role"/>
291      <xsl:text>: </xsl:text>
292    </xsl:when>
293    <xsl:otherwise>
294      <xsl:variable name="targets" select="key('id',@linkend)"/>
295      <xsl:variable name="target" select="$targets[1]"/>
296      <xsl:if test="$target/@role">
297	<xsl:value-of select="$target/@role"/>
298	<xsl:text>: </xsl:text>
299      </xsl:if>
300    </xsl:otherwise>
301  </xsl:choose>
302
303  <a href="{$href}">
304    <xsl:variable name="targets" select="key('id',@linkend)"/>
305    <xsl:variable name="target" select="$targets[1]"/>
306    <xsl:apply-templates select="$target" mode="title.markup"/>
307  </a>
308  <xsl:text>&#160;]</xsl:text>
309  <xsl:if test="following-sibling::constraint">
310    <br/>
311  </xsl:if>
312</xsl:template>
313
314<xsl:template match="constraintdef">
315  <div class="{name(.)}">
316    <xsl:call-template name="anchor"/>
317    <xsl:apply-templates/>
318  </div>
319</xsl:template>
320
321<xsl:template match="constraintdef/title">
322  <p><b><xsl:apply-templates/></b></p>
323</xsl:template>
324
325<!-- ==================================================================== -->
326
327</xsl:stylesheet>
328