1/*
2 * reserved comment block
3 * DO NOT REMOVE OR ALTER!
4 */
5/*
6 * Licensed to the Apache Software Foundation (ASF) under one or more
7 * contributor license agreements.  See the NOTICE file distributed with
8 * this work for additional information regarding copyright ownership.
9 * The ASF licenses this file to You under the Apache License, Version 2.0
10 * (the "License"); you may not use this file except in compliance with
11 * the License.  You may obtain a copy of the License at
12 *
13 *      http://www.apache.org/licenses/LICENSE-2.0
14 *
15 * Unless required by applicable law or agreed to in writing, software
16 * distributed under the License is distributed on an "AS IS" BASIS,
17 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
18 * See the License for the specific language governing permissions and
19 * limitations under the License.
20 */
21
22package com.sun.org.apache.xalan.internal.xsltc.compiler.util;
23
24import com.sun.org.apache.bcel.internal.generic.ALOAD;
25import com.sun.org.apache.bcel.internal.generic.ASTORE;
26import com.sun.org.apache.bcel.internal.generic.ConstantPoolGen;
27import com.sun.org.apache.bcel.internal.generic.Instruction;
28import com.sun.org.apache.bcel.internal.generic.InstructionList;
29import com.sun.org.apache.bcel.internal.generic.Type;
30
31/**
32 * This class is used for named templates. Named template methods have access
33 * to the DOM, the current iterator, the handler and the current node.
34 * @author Jacek Ambroziak
35 * @author Santiago Pericas-Geertsen
36 */
37public final class NamedMethodGenerator extends MethodGenerator {
38    protected static final int CURRENT_INDEX  = 4;
39
40    // The index of the first parameter (after dom/iterator/handler/current)
41    private static final int PARAM_START_INDEX = 5;
42
43    public NamedMethodGenerator(int access_flags, Type return_type,
44                                Type[] arg_types, String[] arg_names,
45                                String method_name, String class_name,
46                                InstructionList il, ConstantPoolGen cp) {
47        super(access_flags, return_type, arg_types, arg_names, method_name,
48              class_name, il, cp);
49    }
50
51    public int getLocalIndex(String name) {
52        if (name.equals("current")) {
53            return CURRENT_INDEX;
54        }
55        return super.getLocalIndex(name);
56    }
57
58    public Instruction loadParameter(int index) {
59        return new ALOAD(index + PARAM_START_INDEX);
60    }
61
62    public Instruction storeParameter(int index) {
63        return new ASTORE(index + PARAM_START_INDEX);
64    }
65}
66