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Java > Open Source Codes > org > logicalcobwebs > asm > tree > FieldInsnNode


1 /***
2  * ASM: a very small and fast Java bytecode manipulation framework
3  * Copyright (c) 2000,2002,2003 INRIA, France Telecom
4  * All rights reserved.
5  *
6  * Redistribution and use in source and binary forms, with or without
7  * modification, are permitted provided that the following conditions
8  * are met:
9  * 1. Redistributions of source code must retain the above copyright
10  * notice, this list of conditions and the following disclaimer.
11  * 2. Redistributions in binary form must reproduce the above copyright
12  * notice, this list of conditions and the following disclaimer in the
13  * documentation and/or other materials provided with the distribution.
14  * 3. Neither the name of the copyright holders nor the names of its
15  * contributors may be used to endorse or promote products derived from
16  * this software without specific prior written permission.
17  *
18  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
19  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
20  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
21  * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
22  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
23  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
24  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
25  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
26  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
27  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
28  * THE POSSIBILITY OF SUCH DAMAGE.
29  *
30  * Contact: Eric.Bruneton@rd.francetelecom.com
31  *
32  * Author: Eric Bruneton
33  */
34
35 package org.logicalcobwebs.asm.tree;
36
37 import org.logicalcobwebs.asm.CodeVisitor;
38
39 /**
40  * A node that represents a field instruction. A field instruction is an
41  * instruction that loads or stores the value of a field of an object.
42  */
43
44 public class FieldInsnNode extends AbstractInsnNode {
45
46   /**
47    * The internal name of the field's owner class (see {@link
48    * org.logicalcobwebs.asm.Type#getInternalName getInternalName}).
49    */
50
51   public String JavaDoc owner;
52
53   /**
54    * The field's name.
55    */
56
57   public String JavaDoc name;
58
59   /**
60    * The field's descriptor (see {@link org.logicalcobwebs.asm.Type Type}).
61    */
62
63   public String JavaDoc desc;
64
65   /**
66    * Constructs a new {@link FieldInsnNode FieldInsnNode} object.
67    *
68    * @param opcode the opcode of the type instruction to be constructed. This
69    * opcode must be GETSTATIC, PUTSTATIC, GETFIELD or PUTFIELD.
70    * @param owner the internal name of the field's owner class (see {@link
71    * org.logicalcobwebs.asm.Type#getInternalName getInternalName}).
72    * @param name the field's name.
73    * @param desc the field's descriptor (see {@link org.logicalcobwebs.asm.Type
74    * Type}).
75    */
76
77   public FieldInsnNode (
78     final int opcode,
79     final String JavaDoc owner,
80     final String JavaDoc name,
81     final String JavaDoc desc)
82   {
83     super(opcode);
84     this.owner = owner;
85     this.name = name;
86     this.desc = desc;
87   }
88
89   /**
90    * Sets the opcode of this instruction.
91    *
92    * @param opcode the new instruction opcode. This opcode must be GETSTATIC,
93    * PUTSTATIC, GETFIELD or PUTFIELD.
94    */
95
96   public void setOpcode (final int opcode) {
97     this.opcode = opcode;
98   }
99
100   public void accept (final CodeVisitor cv) {
101     cv.visitFieldInsn(opcode, owner, name, desc);
102   }
103 }
104
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