mkwan 2003/07/25 13:04:20
Modified: java/src/org/apache/xalan/xsltc/compiler LiteralElement.java
Log:
Fix for bugzilla 20832. Also fix testcase attribset19.
Revision Changes Path
1.22 +28 -26
xml-xalan/java/src/org/apache/xalan/xsltc/compiler/LiteralElement.java
Index: LiteralElement.java
===================================================================
RCS file:
/home/cvs/xml-xalan/java/src/org/apache/xalan/xsltc/compiler/LiteralElement.java,v
retrieving revision 1.21
retrieving revision 1.22
diff -u -r1.21 -r1.22
--- LiteralElement.java 25 Jun 2003 14:40:35 -0000 1.21
+++ LiteralElement.java 25 Jul 2003 20:04:20 -0000 1.22
@@ -427,7 +427,9 @@
for (int i = 0; i < count; i++) {
SyntaxTreeNode node =
(SyntaxTreeNode)_attributeElements.elementAt(i);
- node.translate(classGen, methodGen);
+ if (!(node instanceof XslAttribute)) {
+ node.translate(classGen, methodGen);
+ }
}
}
@@ -469,7 +471,7 @@
* Check whether all attributes are unique.
*/
private boolean checkAttributesUnique() {
- boolean hasHiddenXslAttribute = hasXslAttributeChildren(this, true);
+ boolean hasHiddenXslAttribute = canProduceAttributeNodes(this, true);
if (hasHiddenXslAttribute)
return false;
@@ -515,11 +517,12 @@
}
/**
- * Return true if the given SyntaxTreeNode may contains <xsl:attribute>s in it.
The flag
- * ignoreXslAttribute indicates if the direct <xsl:attribute> children of this
node
- * are included.
+ * Return true if the instructions under the given SyntaxTreeNode can produce
attribute nodes
+ * to an element. Only return false when we are sure that no attribute node is
produced.
+ * Return true if we are not sure. If the flag ignoreXslAttribute is true, the
direct
+ * <xsl:attribute> children of the current node are not included in the check.
*/
- private boolean hasXslAttributeChildren(SyntaxTreeNode node, boolean
ignoreXslAttribute) {
+ private boolean canProduceAttributeNodes(SyntaxTreeNode node, boolean
ignoreXslAttribute) {
Vector contents = node.getContents();
int size = contents.size();
for (int i = 0; i < size; i++) {
@@ -531,20 +534,33 @@
else
return false;
}
- else if (hasOutputEffect(child))
+ // Cannot add an attribute to an element after children have been added to
it.
+ // We can safely return false when the instruction can produce an output
node.
+ else if (child instanceof LiteralElement
+ || child instanceof ValueOf
+ || child instanceof XslElement
+ || child instanceof Comment
+ || child instanceof Number
+ || child instanceof ProcessingInstruction)
return false;
else if (child instanceof XslAttribute) {
if (ignoreXslAttribute)
continue;
else
return true;
- }
+ }
+ // In general, there is no way to check whether <xsl:call-template> or
+ // <xsl:apply-templates> can produce attribute nodes. <xsl:copy> and
+ // <xsl:copy-of> can also copy attribute nodes to an element. Return
+ // true in those cases to be safe.
else if (child instanceof CallTemplate
- || child instanceof ApplyTemplates)
+ || child instanceof ApplyTemplates
+ || child instanceof Copy
+ || child instanceof CopyOf)
return true;
else if ((child instanceof If
|| child instanceof ForEach)
- && hasXslAttributeChildren(child, false)) {
+ && canProduceAttributeNodes(child, false)) {
return true;
}
else if (child instanceof Choose) {
@@ -553,7 +569,7 @@
for (int k = 0; k < num; k++) {
SyntaxTreeNode chooseChild =
(SyntaxTreeNode)chooseContents.elementAt(k);
if (chooseChild instanceof When || chooseChild instanceof
Otherwise) {
- if (hasXslAttributeChildren(chooseChild, false))
+ if (canProduceAttributeNodes(chooseChild, false))
return true;
}
}
@@ -562,18 +578,4 @@
return false;
}
- /**
- * Return true if this node can output something to the result tree.
- */
- private boolean hasOutputEffect(SyntaxTreeNode node) {
- return (node instanceof LiteralElement)
- || (node instanceof ValueOf)
- || (node instanceof Copy)
- || (node instanceof CopyOf)
- || (node instanceof XslElement)
- || (node instanceof Comment)
- || (node instanceof Number)
- || (node instanceof ProcessingInstruction);
- }
-
}
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