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/*
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* reserved comment block
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* DO NOT REMOVE OR ALTER!
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*/
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/*
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* Copyright 2001-2004 The Apache Software Foundation.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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/*
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* $Id: PositionCall.java,v 1.2.4.1 2005/09/02 11:17:10 pvedula Exp $
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*/
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package com.sun.org.apache.xalan.internal.xsltc.compiler;
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import com.sun.org.apache.bcel.internal.generic.ConstantPoolGen;
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import com.sun.org.apache.bcel.internal.generic.ILOAD;
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import com.sun.org.apache.bcel.internal.generic.INVOKEINTERFACE;
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import com.sun.org.apache.bcel.internal.generic.InstructionList;
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import com.sun.org.apache.xalan.internal.xsltc.compiler.util.ClassGenerator;
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import com.sun.org.apache.xalan.internal.xsltc.compiler.util.CompareGenerator;
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import com.sun.org.apache.xalan.internal.xsltc.compiler.util.MethodGenerator;
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import com.sun.org.apache.xalan.internal.xsltc.compiler.util.TestGenerator;
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/**
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* @author Jacek Ambroziak
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* @author Santiago Pericas-Geertsen
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* @author Morten Jorgensen
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*/
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final class PositionCall extends FunctionCall {
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public PositionCall(QName fname) {
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super(fname);
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}
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public boolean hasPositionCall() {
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return true;
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}
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public void translate(ClassGenerator classGen, MethodGenerator methodGen) {
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final InstructionList il = methodGen.getInstructionList();
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if (methodGen instanceof CompareGenerator) {
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il.append(((CompareGenerator)methodGen).loadCurrentNode());
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}
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else if (methodGen instanceof TestGenerator) {
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il.append(new ILOAD(POSITION_INDEX));
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}
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else {
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final ConstantPoolGen cpg = classGen.getConstantPool();
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final int index = cpg.addInterfaceMethodref(NODE_ITERATOR,
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"getPosition",
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"()I");
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il.append(methodGen.loadIterator());
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il.append(new INVOKEINTERFACE(index,1));
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}
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}
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}
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