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
24import com.sun.org.apache.bcel.internal.classfile.ConstantPool;
25
26/**
27 * Super class for the GET/PUTxxx family of instructions.
28 *
29 * @version $Id: FieldInstruction.java 1747278 2016-06-07 17:28:43Z britter $
30 */
31public abstract class FieldInstruction extends FieldOrMethod {
32
33    /**
34     * Empty constructor needed for the Class.newInstance() statement in
35     * Instruction.readInstruction(). Not to be used otherwise.
36     */
37    FieldInstruction() {
38    }
39
40
41    /**
42     * @param index to constant pool
43     */
44    protected FieldInstruction(final short opcode, final int index) {
45        super(opcode, index);
46    }
47
48
49    /**
50     * @return mnemonic for instruction with symbolic references resolved
51     */
52    @Override
53    public String toString( final ConstantPool cp ) {
54        return com.sun.org.apache.bcel.internal.Const.getOpcodeName(super.getOpcode()) + " "
55                + cp.constantToString(super.getIndex(), com.sun.org.apache.bcel.internal.Const.CONSTANT_Fieldref);
56    }
57
58
59    /** @return size of field (1 or 2)
60     */
61    protected int getFieldSize( final ConstantPoolGen cpg ) {
62        return Type.size(Type.getTypeSize(getSignature(cpg)));
63    }
64
65
66    /** @return return type of referenced field
67     */
68    @Override
69    public Type getType( final ConstantPoolGen cpg ) {
70        return getFieldType(cpg);
71    }
72
73
74    /** @return type of field
75     */
76    public Type getFieldType( final ConstantPoolGen cpg ) {
77        return Type.getType(getSignature(cpg));
78    }
79
80
81    /** @return name of referenced field.
82     */
83    public String getFieldName( final ConstantPoolGen cpg ) {
84        return getName(cpg);
85    }
86}
87