1/***
2 * ASM: a very small and fast Java bytecode manipulation framework
3 * Copyright (c) 2000-2007 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 */
30package org.mockito.asm.tree;
31
32import java.util.Map;
33
34import org.mockito.asm.MethodVisitor;
35
36/**
37 * A node that represents a local variable instruction. A local variable
38 * instruction is an instruction that loads or stores the value of a local
39 * variable.
40 *
41 * @author Eric Bruneton
42 */
43public class VarInsnNode extends AbstractInsnNode {
44
45    /**
46     * The operand of this instruction. This operand is the index of a local
47     * variable.
48     */
49    public int var;
50
51    /**
52     * Constructs a new {@link VarInsnNode}.
53     *
54     * @param opcode the opcode of the local variable instruction to be
55     *        constructed. This opcode must be ILOAD, LLOAD, FLOAD, DLOAD,
56     *        ALOAD, ISTORE, LSTORE, FSTORE, DSTORE, ASTORE or RET.
57     * @param var the operand of the instruction to be constructed. This operand
58     *        is the index of a local variable.
59     */
60    public VarInsnNode(final int opcode, final int var) {
61        super(opcode);
62        this.var = var;
63    }
64
65    /**
66     * Sets the opcode of this instruction.
67     *
68     * @param opcode the new instruction opcode. This opcode must be ILOAD,
69     *        LLOAD, FLOAD, DLOAD, ALOAD, ISTORE, LSTORE, FSTORE, DSTORE, ASTORE
70     *        or RET.
71     */
72    public void setOpcode(final int opcode) {
73        this.opcode = opcode;
74    }
75
76    public int getType() {
77        return VAR_INSN;
78    }
79
80    public void accept(final MethodVisitor mv) {
81        mv.visitVarInsn(opcode, var);
82    }
83
84    public AbstractInsnNode clone(final Map labels) {
85        return new VarInsnNode(opcode, var);
86    }
87}