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Java > Open Source Codes > oracle > toplink > libraries > 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
31 package oracle.toplink.libraries.asm.tree;
32
33 import oracle.toplink.libraries.asm.CodeVisitor;
34
35 /**
36  * A node that represents a field instruction. A field instruction is an
37  * instruction that loads or stores the value of a field of an object.
38  *
39  * @author Eric Bruneton
40  */
41
42 public class FieldInsnNode extends AbstractInsnNode {
43
44   /**
45    * The internal name of the field's owner class (see {@link
46    * oracle.toplink.libraries.asm.Type#getInternalName() getInternalName}).
47    */
48
49   public String JavaDoc owner;
50
51   /**
52    * The field's name.
53    */
54
55   public String JavaDoc name;
56
57   /**
58    * The field's descriptor (see {@link oracle.toplink.libraries.asm.Type Type}).
59    */
60
61   public String JavaDoc desc;
62
63   /**
64    * Constructs a new {@link FieldInsnNode FieldInsnNode} object.
65    *
66    * @param opcode the opcode of the type instruction to be constructed. This
67    * opcode must be GETSTATIC, PUTSTATIC, GETFIELD or PUTFIELD.
68    * @param owner the internal name of the field's owner class (see {@link
69    * oracle.toplink.libraries.asm.Type#getInternalName() getInternalName}).
70    * @param name the field's name.
71    * @param desc the field's descriptor (see {@link oracle.toplink.libraries.asm.Type
72    * Type}).
73    */
74
75   public FieldInsnNode (
76     final int opcode,
77     final String JavaDoc owner,
78     final String JavaDoc name,
79     final String JavaDoc desc)
80   {
81     super(opcode);
82     this.owner = owner;
83     this.name = name;
84     this.desc = desc;
85   }
86
87   /**
88    * Sets the opcode of this instruction.
89    *
90    * @param opcode the new instruction opcode. This opcode must be GETSTATIC,
91    * PUTSTATIC, GETFIELD or PUTFIELD.
92    */
93
94   public void setOpcode (final int opcode) {
95     this.opcode = opcode;
96   }
97
98   public void accept (final CodeVisitor cv) {
99     cv.visitFieldInsn(opcode, owner, name, desc);
100   }
101 }
102
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