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 jump instruction. A jump instruction is an
38 * instruction that may jump to another instruction.
39 *
40 * @author Eric Bruneton
41 */
42public class JumpInsnNode extends AbstractInsnNode {
43
44    /**
45     * The operand of this instruction. This operand is a label that designates
46     * the instruction to which this instruction may jump.
47     */
48    public LabelNode label;
49
50    /**
51     * Constructs a new {@link JumpInsnNode}.
52     *
53     * @param opcode the opcode of the type instruction to be constructed. This
54     *        opcode must be IFEQ, IFNE, IFLT, IFGE, IFGT, IFLE, IF_ICMPEQ,
55     *        IF_ICMPNE, IF_ICMPLT, IF_ICMPGE, IF_ICMPGT, IF_ICMPLE, IF_ACMPEQ,
56     *        IF_ACMPNE, GOTO, JSR, IFNULL or IFNONNULL.
57     * @param label the operand of the instruction to be constructed. This
58     *        operand is a label that designates the instruction to which the
59     *        jump instruction may jump.
60     */
61    public JumpInsnNode(final int opcode, final LabelNode label) {
62        super(opcode);
63        this.label = label;
64    }
65
66    /**
67     * Sets the opcode of this instruction.
68     *
69     * @param opcode the new instruction opcode. This opcode must be IFEQ, IFNE,
70     *        IFLT, IFGE, IFGT, IFLE, IF_ICMPEQ, IF_ICMPNE, IF_ICMPLT,
71     *        IF_ICMPGE, IF_ICMPGT, IF_ICMPLE, IF_ACMPEQ, IF_ACMPNE, GOTO, JSR,
72     *        IFNULL or IFNONNULL.
73     */
74    public void setOpcode(final int opcode) {
75        this.opcode = opcode;
76    }
77
78    public int getType() {
79        return JUMP_INSN;
80    }
81
82    public void accept(final MethodVisitor mv) {
83        mv.visitJumpInsn(opcode, label.getLabel());
84    }
85
86    public AbstractInsnNode clone(final Map labels) {
87        return new JumpInsnNode(opcode, clone(label, labels));
88    }
89}
90