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.bcel.internal.generic;
23
24/**
25 * Denotes an unparameterized instruction to load a value from a local
26 * variable, e.g. ILOAD.
27 *
28 * @version $Id: LoadInstruction.java 1747278 2016-06-07 17:28:43Z britter $
29 */
30public abstract class LoadInstruction extends LocalVariableInstruction implements PushInstruction {
31
32    /**
33     * Empty constructor needed for the Class.newInstance() statement in
34     * Instruction.readInstruction(). Not to be used otherwise.
35     * tag and length are defined in readInstruction and initFromFile, respectively.
36     */
37    LoadInstruction(final short canon_tag, final short c_tag) {
38        super(canon_tag, c_tag);
39    }
40
41
42    /**
43     * @param opcode Instruction opcode
44     * @param c_tag Instruction number for compact version, ALOAD_0, e.g.
45     * @param n local variable index (unsigned short)
46     */
47    protected LoadInstruction(final short opcode, final short c_tag, final int n) {
48        super(opcode, c_tag, n);
49    }
50
51
52    /**
53     * Call corresponding visitor method(s). The order is:
54     * Call visitor methods of implemented interfaces first, then
55     * call methods according to the class hierarchy in descending order,
56     * i.e., the most specific visitXXX() call comes last.
57     *
58     * @param v Visitor object
59     */
60    @Override
61    public void accept( final Visitor v ) {
62        v.visitStackProducer(this);
63        v.visitPushInstruction(this);
64        v.visitTypedInstruction(this);
65        v.visitLocalVariableInstruction(this);
66        v.visitLoadInstruction(this);
67    }
68}
69