- /*
- * Copyright 2001-2004 The Apache Software Foundation.
- *
- * Licensed 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: PositionCall.java,v 1.14 2004/02/16 22:24:29 minchau Exp $
- */
-
- package com.sun.org.apache.xalan.internal.xsltc.compiler;
-
- import com.sun.org.apache.bcel.internal.generic.ConstantPoolGen;
- import com.sun.org.apache.bcel.internal.generic.ILOAD;
- import com.sun.org.apache.bcel.internal.generic.INVOKEINTERFACE;
- import com.sun.org.apache.bcel.internal.generic.InstructionList;
- import com.sun.org.apache.xalan.internal.xsltc.compiler.util.ClassGenerator;
- import com.sun.org.apache.xalan.internal.xsltc.compiler.util.CompareGenerator;
- import com.sun.org.apache.xalan.internal.xsltc.compiler.util.MethodGenerator;
- import com.sun.org.apache.xalan.internal.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));
- }
- }
- }