/*
 * 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: RtMethodGenerator.java 468649 2006-10-28 07:00:55Z minchau $
 */

package org.apache.xalan.xsltc.compiler.util;

import org.apache.bcel.generic.ALOAD;
import org.apache.bcel.generic.ASTORE;
import org.apache.bcel.generic.ConstantPoolGen;
import org.apache.bcel.generic.Instruction;
import org.apache.bcel.generic.InstructionList;
import org.apache.bcel.generic.Type;

/**
 * This class is used for result trees implemented as methods. These
 * methods take a reference to the DOM and to the handler only.
 * @author Jacek Ambroziak
 * @author Santiago Pericas-Geertsen
 */
public final class RtMethodGenerator extends MethodGenerator {
    private static final int HANDLER_INDEX = 2;
    private final Instruction _astoreHandler;
    private final Instruction _aloadHandler;

    public RtMethodGenerator(int access_flags, Type return_type,
			     Type[] arg_types, String[] arg_names,
			     String method_name, String class_name,
			     InstructionList il, ConstantPoolGen cp) {
	super(access_flags, return_type, arg_types, arg_names, method_name, 
	      class_name, il, cp);
	
	_astoreHandler = new ASTORE(HANDLER_INDEX);
	_aloadHandler  = new ALOAD(HANDLER_INDEX);
    }

    public int getIteratorIndex() {
	return INVALID_INDEX;		// not available
    }
    
    public final Instruction storeHandler() {
	return _astoreHandler;
    }

    public final Instruction loadHandler() {
	return _aloadHandler;
    }

    public int getLocalIndex(String name) {
	return INVALID_INDEX;		// not available
    }
}
