/**
* Create a new location path iterator.
*
* @param compiler The Compiler which is creating this expression.
* @param opPos The position of this iterator in the
* @return New location path iterator.
* @throws javax.xml.transform.TransformerException
*/
protected LocPathIterator createDTMIterator(Compiler compiler, int opPos)
throws javax.xml.transform.TransformerException {
LocPathIterator lpi =
(LocPathIterator)
WalkerFactory.newDTMIterator(compiler, opPos, (compiler.getLocationPathDepth() <= 0));
return lpi;
}
/**
* Initialize the location path iterators. Recursive.
*
* @param compiler The Compiler which is creating this expression.
* @param opPos The position of this iterator in the opcode list from the compiler.
* @param count The insert position of the iterator.
* @throws javax.xml.transform.TransformerException
*/
protected void loadLocationPaths(Compiler compiler, int opPos, int count)
throws javax.xml.transform.TransformerException {
// TODO: Handle unwrapped FilterExpr
int steptype = compiler.getOp(opPos);
if (steptype == OpCodes.OP_LOCATIONPATH) {
loadLocationPaths(compiler, compiler.getNextOpPos(opPos), count + 1);
m_exprs[count] = createDTMIterator(compiler, opPos);
m_exprs[count].exprSetParent(this);
} else {
// Have to check for unwrapped functions, which the LocPathIterator
// doesn't handle.
switch (steptype) {
case OpCodes.OP_VARIABLE:
case OpCodes.OP_EXTFUNCTION:
case OpCodes.OP_FUNCTION:
case OpCodes.OP_GROUP:
loadLocationPaths(compiler, compiler.getNextOpPos(opPos), count + 1);
WalkingIterator iter = new WalkingIterator(compiler.getNamespaceContext());
iter.exprSetParent(this);
if (compiler.getLocationPathDepth() <= 0) iter.setIsTopLevel(true);
iter.m_firstWalker = new com.sun.org.apache.xpath.internal.axes.FilterExprWalker(iter);
iter.m_firstWalker.init(compiler, opPos, steptype);
m_exprs[count] = iter;
break;
default:
m_exprs = new LocPathIterator[count];
}
}
}