| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| /* |
| * $Id$ |
| */ |
| |
| package org.apache.xalan.xsltc.compiler; |
| |
| import org.apache.bcel.generic.ConstantPoolGen; |
| import org.apache.bcel.generic.ILOAD; |
| import org.apache.bcel.generic.INVOKEINTERFACE; |
| import org.apache.bcel.generic.InstructionList; |
| import org.apache.xalan.xsltc.compiler.util.ClassGenerator; |
| import org.apache.xalan.xsltc.compiler.util.CompareGenerator; |
| import org.apache.xalan.xsltc.compiler.util.MethodGenerator; |
| import org.apache.xalan.xsltc.compiler.util.TestGenerator; |
| |
| /** |
| * @author Jacek Ambroziak |
| * @author Santiago Pericas-Geertsen |
| * @author Morten Jorgensen |
| */ |
| final class PositionCall extends FunctionCall { |
| |
| public PositionCall(QName fname) { |
| super(fname); |
| } |
| |
| public boolean hasPositionCall() { |
| return true; |
| } |
| |
| public void translate(ClassGenerator classGen, MethodGenerator methodGen) { |
| final InstructionList il = methodGen.getInstructionList(); |
| |
| if (methodGen instanceof CompareGenerator) { |
| il.append(((CompareGenerator)methodGen).loadCurrentNode()); |
| } |
| else if (methodGen instanceof TestGenerator) { |
| il.append(new ILOAD(POSITION_INDEX)); |
| } |
| else { |
| final ConstantPoolGen cpg = classGen.getConstantPool(); |
| final int index = cpg.addInterfaceMethodref(NODE_ITERATOR, |
| "getPosition", |
| "()I"); |
| |
| il.append(methodGen.loadIterator()); |
| il.append(new INVOKEINTERFACE(index,1)); |
| } |
| } |
| } |