X-Git-Url: https://git.saurik.com/bison.git/blobdiff_plain/32f19b6b47b41c46fdeb66b26cc67b609f8ae48c..d0d3313d10a28aa6fe77f158d61b84424aa9b3ce:/data/xslt/xml2text.xsl

diff --git a/data/xslt/xml2text.xsl b/data/xslt/xml2text.xsl
index 9271e8c7..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"/>
@@ -111,7 +132,7 @@
 
 <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">
@@ -128,16 +149,13 @@
     <xsl:with-param name="line-length" select="66" />
     <xsl:with-param name="text">
       <xsl:value-of select="concat(' (', @token-number, ')')"/>
-      <xsl:apply-templates select="rule" />
+      <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="@name"/>
   <xsl:value-of select="concat(' (', @symbol-number, ')')"/>
@@ -147,28 +165,27 @@
       <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"/>
@@ -274,11 +291,15 @@
   <xsl:param name="pad"/>
   <xsl:param name="prev-rule-number"
 	     select="preceding-sibling::item[1]/@rule-number"/>
-  <xsl:apply-templates select="key('bison:ruleNumber', current()/@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:ruleNumber', $prev-rule-number)/lhs[text()]"/>
+    <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"/>
@@ -293,8 +314,7 @@
   <xsl:param name="point"/>
   <xsl:param name="lookaheads"/>
 
-  <xsl:if test="$itemset != 'true'
-		and not(preceding-sibling::rule[1]/lhs[text()] = lhs[text()])">
+  <xsl:if test="$itemset != 'true' and not($prev-lhs = lhs[text()])">
     <xsl:text>&#10;</xsl:text>
   </xsl:if>
 
@@ -307,8 +327,7 @@
 
   <!-- LHS -->
   <xsl:choose>
-    <xsl:when test="$itemset != 'true'
-		    and preceding-sibling::rule[1]/lhs[text()] = lhs[text()]">
+    <xsl:when test="$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"/>
@@ -423,7 +442,7 @@
       <xsl:value-of select="@rule"/>
       <xsl:text> (</xsl:text>
       <xsl:value-of
-	  select="key('bison:ruleNumber', current()/@rule)/lhs[text()]"/>
+	  select="key('bison:ruleByNumber', current()/@rule)/lhs[text()]"/>
       <xsl:text>)</xsl:text>
     </xsl:otherwise>
   </xsl:choose>