package client.net.sf.saxon.ce.style;
import client.net.sf.saxon.ce.expr.Expression;
import client.net.sf.saxon.ce.expr.instruct.Executable;
import client.net.sf.saxon.ce.expr.instruct.NextMatch;
import client.net.sf.saxon.ce.om.AttributeCollection;
import client.net.sf.saxon.ce.om.Axis;
import client.net.sf.saxon.ce.tree.iter.AxisIterator;
import client.net.sf.saxon.ce.om.NodeInfo;
import client.net.sf.saxon.ce.value.Whitespace;
import client.net.sf.saxon.ce.trans.XPathException;
import client.net.sf.saxon.ce.type.Type;
/**
* An xsl:next-match element in the stylesheet
*/
public class XSLNextMatch extends StyleElement {
private boolean useTailRecursion = false;
/**
* Determine whether this node is an instruction.
* @return true - it is an instruction
*/
public boolean isInstruction() {
return true;
}
/**
* Determine whether this type of element is allowed to contain an xsl:fallback
* instruction
*/
public boolean mayContainFallback() {
return true;
}
public void prepareAttributes() throws XPathException {
AttributeCollection atts = getAttributeList();
for (int a=0; a<atts.getLength(); a++) {
int nc = atts.getNameCode(a);
checkUnknownAttribute(nc);
}
}
public void validate(Declaration decl) throws XPathException {
AxisIterator kids = iterateAxis(Axis.CHILD);
while (true) {
NodeInfo child = (NodeInfo)kids.next();
if (child == null) {
break;
}
if (child instanceof XSLWithParam || child instanceof XSLFallback) {
// OK;
} else if (child.getNodeKind() == Type.TEXT) {
// with xml:space=preserve, white space nodes may still be there
if (!Whitespace.isWhite(child.getStringValueCS())) {
compileError("No character data is allowed within xsl:next-match", "XTSE0010");
}
} else {
compileError("Child element " + child.getDisplayName() +
" is not allowed as a child of xsl:next-match", "XTSE0010");
}
}
}
/**
* Mark tail-recursive calls on templates and functions.
* For most instructions, this does nothing.
*/
protected boolean markTailCalls() {
useTailRecursion = true;
return true;
}
public Expression compile(Executable exec, Declaration decl) throws XPathException {
NextMatch inst = new NextMatch(useTailRecursion);
inst.setActualParameters(getWithParamInstructions(exec, decl, false, inst),
getWithParamInstructions(exec, decl, true, inst));
return inst;
}
}
// This Source Code Form is subject to the terms of the Mozilla Public License, v. 2.0.
// If a copy of the MPL was not distributed with this file, You can obtain one at http://mozilla.org/MPL/2.0/.
// This Source Code Form is “Incompatible With Secondary Licenses”, as defined by the Mozilla Public License, v. 2.0.