X-Git-Url: https://git.saurik.com/bison.git/blobdiff_plain/21f1b063d812990caeb738fa8db21085ece53a30..d03c0413f0c73f2ab6dde539928eaca8f9f86c9f:/data/xslt/xml2text.xsl

diff --git a/data/xslt/xml2text.xsl b/data/xslt/xml2text.xsl
index 74688525..d14f1be5 100644
--- a/data/xslt/xml2text.xsl
+++ b/data/xslt/xml2text.xsl
@@ -2,9 +2,8 @@
 
 <!--
     xml2text.xsl - transform Bison XML Report into plain text.
-    $Id$
 
-    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.
 
@@ -36,73 +35,95 @@
 </xsl:template>
 
 <xsl:template match="bison-xml-report">
-  <xsl:apply-templates select="reductions"/>
-  <xsl:apply-templates select="rules-never-reduced"/>
+  <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="rules-never-reduced">
-  <xsl:if test="rule">
-    <xsl:text>Rules never reduced&#10;</xsl:text>
-    <xsl:apply-templates select="rule">
-      <xsl:with-param name="pad" select="'3'"/>
-    </xsl:apply-templates>
-    <xsl:text>&#10;&#10;</xsl:text>
-  </xsl:if>
+<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="reductions">
-  <xsl:apply-templates select="useless/nonterminals"/>
-  <xsl:apply-templates select="unused/terminals"/>
-  <xsl:apply-templates select="useless/rules"/>
+<xsl:template match="nonterminals" mode="useless-in-grammar">
+  <xsl:if test="nonterminal[@usefulness='useless-in-grammar']">
+    <xsl:text>Nonterminals useless in grammar&#10;&#10;</xsl:text>
+    <xsl:for-each select="nonterminal[@usefulness='useless-in-grammar']">
+      <xsl:text>   </xsl:text>
+      <xsl:value-of select="@name"/>
+      <xsl:text>&#10;</xsl:text>
+    </xsl:for-each>
+    <xsl:text>&#10;&#10;</xsl:text>
+  </xsl:if>
 </xsl:template>
 
-<xsl:template match="useless/nonterminals">
-  <xsl:if test="nonterminal">
-    <xsl:text>Useless nonterminals&#10;&#10;</xsl:text>
-    <xsl:for-each select="nonterminal">
+<xsl:template match="terminals" mode="unused-in-grammar">
+  <xsl:if test="terminal[@usefulness='unused-in-grammar']">
+    <xsl:text>Terminals unused in grammar&#10;&#10;</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="."/>
+      <xsl:value-of select="@name"/>
       <xsl:text>&#10;</xsl:text>
     </xsl:for-each>
     <xsl:text>&#10;&#10;</xsl:text>
   </xsl:if>
 </xsl:template>
 
-<xsl:template match="useless/rules">
-  <xsl:if test="rule">
-    <xsl:text>Useless rules&#10;</xsl:text>
-    <xsl:apply-templates select="rule">
-      <xsl:with-param name="pad" select="'3'"/>
-    </xsl:apply-templates>
+<xsl:template match="rules" mode="useless-in-grammar">
+  <xsl:variable name="set" select="rule[@usefulness='useless-in-grammar']"/>
+  <xsl:if test="$set">
+    <xsl:text>Rules useless in grammar&#10;</xsl:text>
+    <xsl:call-template name="style-rule-set">
+      <xsl:with-param name="rule-set" select="$set"/>
+    </xsl:call-template>
     <xsl:text>&#10;&#10;</xsl:text>
   </xsl:if>
 </xsl:template>
 
-<xsl:template match="unused/terminals">
-  <xsl:if test="terminal">
-    <xsl:text>Terminals which are not used&#10;&#10;</xsl:text>
-    <xsl:for-each select="terminal">
-      <xsl:text>   </xsl:text>
-      <xsl:value-of select="."/>
-      <xsl:text>&#10;</xsl:text>
-    </xsl:for-each>
+<xsl:template match="grammar" mode="useless-in-parser">
+  <xsl:variable
+    name="set" select="rules/rule[@usefulness='useless-in-parser']"
+  />
+  <xsl:if test="$set">
+    <xsl:text>Rules useless in parser due to conflicts&#10;</xsl:text>
+    <xsl:call-template name="style-rule-set">
+      <xsl:with-param name="rule-set" select="$set"/>
+    </xsl:call-template>
     <xsl:text>&#10;&#10;</xsl:text>
   </xsl:if>
 </xsl:template>
 
 <xsl:template match="grammar">
   <xsl:text>Grammar&#10;</xsl:text>
-  <xsl:apply-templates select="rules/rule">
-    <xsl:with-param name="pad" select="'3'"/>
-  </xsl:apply-templates>
+  <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>&#10;&#10;</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&#10;&#10;</xsl:text>
   <xsl:apply-templates select="terminal"/>
@@ -111,59 +132,60 @@
 
 <xsl:template match="grammar/nonterminals">
   <xsl:text>Nonterminals, with rules where they appear&#10;&#10;</xsl:text>
-  <xsl:apply-templates select="nonterminal"/>
+  <xsl:apply-templates select="nonterminal[@usefulness!='useless-in-grammar']"/>
 </xsl:template>
 
 <xsl:template match="terminal">
-  <xsl:value-of select="@symbol"/>
+  <xsl:value-of select="@name"/>
   <xsl:call-template name="line-wrap">
-    <xsl:with-param
-      name="first-line-length" select="66 - string-length(@symbol)"
-    />
+    <xsl:with-param name="first-line-length">
+      <xsl:choose>
+        <xsl:when test="string-length(@name) &gt; 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(' (', @type, ')')"/>
-      <xsl:apply-templates select="rule" />
+      <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="terminal/rule">
-  <xsl:text> </xsl:text>
-  <xsl:value-of select="."/>
-</xsl:template>
-
 <xsl:template match="nonterminal">
-  <xsl:value-of select="@symbol"/>
-  <xsl:value-of select="concat(' (', @type, ')')"/>
+  <xsl:value-of select="@name"/>
+  <xsl:value-of select="concat(' (', @symbol-number, ')')"/>
   <xsl:text>&#10;</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="left/rule">
+        <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:apply-templates select="left/rule"/>
-        <xsl:if test="left/rule and right/rule">
-          <xsl:text>, </xsl:text>
-        </xsl:if>
-        <xsl:if test="right/rule">
+        <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:apply-templates select="right/rule"/>
       </xsl:with-param>
     </xsl:call-template>
   </xsl:variable>
   <xsl:value-of select="translate($output, '@', ' ')" />
 </xsl:template>
 
-<xsl:template match="nonterminal/left/rule|nonterminal/right/rule">
-  <xsl:text> </xsl:text>
-  <xsl:value-of select="."/>
-</xsl:template>
-
 <xsl:template match="automaton" mode="conflicts">
   <xsl:variable name="conflict-report">
     <xsl:apply-templates select="state" mode="conflicts"/>
@@ -211,7 +233,7 @@
   <xsl:text>state </xsl:text>
   <xsl:value-of select="@number"/>
   <xsl:text>&#10;&#10;</xsl:text>
-  <xsl:apply-templates select="itemset/rule">
+  <xsl:apply-templates select="itemset/item">
     <xsl:with-param name="pad" select="$pad"/>
   </xsl:apply-templates>
   <xsl:apply-templates select="actions/transitions">
@@ -265,19 +287,53 @@
   </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', $prev-rule-number)/lhs[text()]"
+   />
+    <xsl:with-param name="point" select="@point"/>
+    <xsl:with-param name="lookaheads">
+      <xsl:apply-templates select="lookaheads"/>
+    </xsl:with-param>
+  </xsl:apply-templates>
+</xsl:template>
+
 <xsl:template match="rule">
+  <xsl:param name="itemset"/>
   <xsl:param name="pad"/>
-  <xsl:if test="not(name(..) = 'itemset') and not(preceding-sibling::rule[1]/lhs[text()] = lhs[text()])">
+  <xsl:param name="prev-lhs"/>
+  <xsl:param name="point"/>
+  <xsl:param name="lookaheads"/>
+
+  <xsl:if test="$itemset != 'true' and not($prev-lhs = lhs[text()])">
     <xsl:text>&#10;</xsl:text>
   </xsl:if>
+
   <xsl:text>  </xsl:text>
   <xsl:call-template name="lpad">
     <xsl:with-param name="str" select="string(@number)"/>
     <xsl:with-param name="pad" select="number($pad)"/>
   </xsl:call-template>
   <xsl:text> </xsl:text>
+
+  <!-- LHS -->
   <xsl:choose>
-    <xsl:when test="preceding-sibling::rule[1]/lhs[text()] = lhs[text()]">
+    <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"/>
@@ -288,8 +344,26 @@
       <xsl:text>:</xsl:text>
     </xsl:otherwise>
   </xsl:choose>
-  <xsl:apply-templates select="rhs/symbol|rhs/point|rhs/empty"/>
-  <xsl:apply-templates select="lookaheads"/>
+
+  <!-- RHS -->
+  <xsl:for-each select="rhs/*">
+    <xsl:if test="position() = $point + 1">
+      <xsl:text> .</xsl:text>
+    </xsl:if>
+    <xsl:if test="$itemset = 'true' and name(.) != 'empty'">
+      <xsl:apply-templates select="."/>
+    </xsl:if>
+    <xsl:if test="$itemset != 'true'">
+      <xsl:apply-templates select="."/>
+    </xsl:if>
+    <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>&#10;</xsl:text>
 </xsl:template>
 
@@ -298,10 +372,6 @@
   <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>
@@ -372,7 +442,7 @@
       <xsl:value-of select="@rule"/>
       <xsl:text> (</xsl:text>
       <xsl:value-of
-	  select="/bison-xml-report/grammar/rules/rule[@number = current()/@rule]/lhs[text()]"/>
+	  select="key('bison:ruleByNumber', current()/@rule)/lhs[text()]"/>
       <xsl:text>)</xsl:text>
     </xsl:otherwise>
   </xsl:choose>
@@ -465,11 +535,11 @@
 </xsl:template>
 
 <xsl:template name="line-wrap">
-  <xsl:param name="line-length" required="yes" />
-  <xsl:param name="first-line-length" select="$line-length" />
-  <xsl:param name="text" required="yes" />
+  <xsl:param name="line-length"/> <!-- required -->
+  <xsl:param name="first-line-length" select="$line-length"/>
+  <xsl:param name="text"/> <!-- required -->
   <xsl:choose>
-    <xsl:when test="string-length($text) = 0 or normalize-space($text) = ''" />
+    <xsl:when test="normalize-space($text) = ''" />
     <xsl:when test="string-length($text) &lt;= $first-line-length">
       <xsl:value-of select="concat($text, '&#10;')" />
     </xsl:when>
@@ -477,7 +547,7 @@
       <xsl:variable name="break-pos">
         <xsl:call-template name="ws-search">
           <xsl:with-param name="text" select="$text" />
-          <xsl:with-param name="pos" select="$first-line-length+1" />
+          <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)" />
@@ -493,19 +563,17 @@
 </xsl:template>
 
 <xsl:template name="ws-search">
-  <xsl:param name="text" required="yes" />
-  <xsl:param name="pos" required="yes" />
+  <xsl:param name="text"/> <!-- required -->
+  <xsl:param name="start"/> <!-- required -->
+  <xsl:variable name="search-text" select="substring($text, $start)" />
   <xsl:choose>
-    <xsl:when
-      test="$pos &gt; string-length($text) or substring($text, $pos, 1) = ' '"
-    >
-      <xsl:value-of select="$pos" />
+    <xsl:when test="not(contains($search-text, ' '))">
+      <xsl:value-of select="string-length($text)+1" />
     </xsl:when>
     <xsl:otherwise>
-      <xsl:call-template name="ws-search">
-        <xsl:with-param name="text" select="$text" />
-        <xsl:with-param name="pos" select="$pos+1" />
-      </xsl:call-template>
+      <xsl:value-of
+        select="$start + string-length(substring-before($search-text, ' '))"
+      />
     </xsl:otherwise>
   </xsl:choose>
 </xsl:template>