/*
* @(#)$Id$
*
* The Apache Software License, Version 1.1
*
*
* Copyright (c) 2001 The Apache Software Foundation. All rights
* reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* 3. The end-user documentation included with the redistribution,
* if any, must include the following acknowledgment:
* "This product includes software developed by the
* Apache Software Foundation (http://www.apache.org/)."
* Alternately, this acknowledgment may appear in the software itself,
* if and wherever such third-party acknowledgments normally appear.
*
* 4. The names "Xalan" and "Apache Software Foundation" must
* not be used to endorse or promote products derived from this
* software without prior written permission. For written
* permission, please contact apache@apache.org.
*
* 5. Products derived from this software may not be called "Apache",
* nor may "Apache" appear in their name, without prior written
* permission of the Apache Software Foundation.
*
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
* ====================================================================
*
* This software consists of voluntary contributions made by many
* individuals on behalf of the Apache Software Foundation and was
* originally based on software copyright (c) 2001, Sun
* Microsystems., http://www.sun.com. For more
* information on the Apache Software Foundation, please see
* <http://www.apache.org/>.
*
* @author Jacek Ambroziak
* @author Santiago Pericas-Geertsen
*
*/
package org.apache.xalan.xsltc.compiler;
import org.apache.xalan.xsltc.compiler.util.Type;
import org.apache.xalan.xsltc.DOM;
import org.apache.xalan.xsltc.compiler.util.Type;
import de.fub.bytecode.generic.*;
import org.apache.xalan.xsltc.compiler.util.*;
final class AbsolutePathPattern extends LocationPathPattern {
private final RelativePathPattern _left; // may be null
public AbsolutePathPattern(RelativePathPattern left) {
_left = left;
if (left != null) {
left.setParent(this);
}
}
public void setParser(Parser parser) {
super.setParser(parser);
if (_left != null)
_left.setParser(parser);
}
public Type typeCheck(SymbolTable stable) throws TypeCheckError {
return _left == null ? Type.Root : _left.typeCheck(stable);
}
public boolean isWildcard() {
return false;
}
public StepPattern getKernelPattern() {
return _left != null ? _left.getKernelPattern() : null;
}
public void reduceKernelPattern() {
_left.reduceKernelPattern();
}
public void translate(ClassGenerator classGen, MethodGenerator methodGen) {
final ConstantPoolGen cpg = classGen.getConstantPool();
final InstructionList il = methodGen.getInstructionList();
final String DOM_CLASS = classGen.getDOMClass();
if (_left != null) {
if (_left instanceof StepPattern) {
final LocalVariableGen local =
// absolute path pattern temporary
methodGen.addLocalVariable2("apptmp",
Util.getJCRefType(NODE_SIG),
il.getEnd());
il.append(DUP);
il.append(new ISTORE(local.getIndex()));
_left.translate(classGen, methodGen);
il.append(methodGen.loadDOM());
local.setEnd(il.append(new ILOAD(local.getIndex())));
methodGen.removeLocalVariable(local);
}
else {
_left.translate(classGen, methodGen);
}
_trueList.append(_left._trueList);
_falseList.append(_left._falseList);
}
il.append(methodGen.loadDOM());
il.append(SWAP);
il.append(new INVOKEVIRTUAL(cpg.addMethodref(DOM_CLASS,
GET_PARENT,
GET_PARENT_SIG)));
il.append(new INVOKEVIRTUAL(cpg.addMethodref(DOM_CLASS,
"getType", "(I)I")));
il.append(new PUSH(cpg, DOM.ROOT));
_falseList.add(il.append(new IF_ICMPNE(null)));
}
public String toString() {
return "absolutePathPattern(" + (_left!=null ? _left.toString() : ")");
}
}