1/* 2 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 3 * 4 * This code is free software; you can redistribute it and/or modify it 5 * under the terms of the GNU General Public License version 2 only, as 6 * published by the Free Software Foundation. Oracle designates this 7 * particular file as subject to the "Classpath" exception as provided 8 * by Oracle in the LICENSE file that accompanied this code. 9 * 10 * This code is distributed in the hope that it will be useful, but WITHOUT 11 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 12 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 13 * version 2 for more details (a copy is included in the LICENSE file that 14 * accompanied this code). 15 * 16 * You should have received a copy of the GNU General Public License version 17 * 2 along with this work; if not, write to the Free Software Foundation, 18 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 19 * 20 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 21 * or visit www.oracle.com if you need additional information or have any 22 * questions. 23 */ 24 25/* 26 * This file is available under and governed by the GNU General Public 27 * License version 2 only, as published by the Free Software Foundation. 28 * However, the following notice accompanied the original version of this 29 * file: 30 * 31 * ASM: a very small and fast Java bytecode manipulation framework 32 * Copyright (c) 2000-2011 INRIA, France Telecom 33 * All rights reserved. 34 * 35 * Redistribution and use in source and binary forms, with or without 36 * modification, are permitted provided that the following conditions 37 * are met: 38 * 1. Redistributions of source code must retain the above copyright 39 * notice, this list of conditions and the following disclaimer. 40 * 2. Redistributions in binary form must reproduce the above copyright 41 * notice, this list of conditions and the following disclaimer in the 42 * documentation and/or other materials provided with the distribution. 43 * 3. Neither the name of the copyright holders nor the names of its 44 * contributors may be used to endorse or promote products derived from 45 * this software without specific prior written permission. 46 * 47 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 48 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 49 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 50 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE 51 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 52 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 53 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 54 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 55 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 56 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF 57 * THE POSSIBILITY OF SUCH DAMAGE. 58 */ 59package jdk.internal.org.objectweb.asm.tree; 60 61import java.util.Map; 62 63import jdk.internal.org.objectweb.asm.MethodVisitor; 64 65/** 66 * A node that represents a jump instruction. A jump instruction is an 67 * instruction that may jump to another instruction. 68 * 69 * @author Eric Bruneton 70 */ 71public class JumpInsnNode extends AbstractInsnNode { 72 73 /** 74 * The operand of this instruction. This operand is a label that designates 75 * the instruction to which this instruction may jump. 76 */ 77 public LabelNode label; 78 79 /** 80 * Constructs a new {@link JumpInsnNode}. 81 * 82 * @param opcode 83 * the opcode of the type instruction to be constructed. This 84 * opcode must be IFEQ, IFNE, IFLT, IFGE, IFGT, IFLE, IF_ICMPEQ, 85 * IF_ICMPNE, IF_ICMPLT, IF_ICMPGE, IF_ICMPGT, IF_ICMPLE, 86 * IF_ACMPEQ, IF_ACMPNE, GOTO, JSR, IFNULL or IFNONNULL. 87 * @param label 88 * the operand of the instruction to be constructed. This operand 89 * is a label that designates the instruction to which the jump 90 * instruction may jump. 91 */ 92 public JumpInsnNode(final int opcode, final LabelNode label) { 93 super(opcode); 94 this.label = label; 95 } 96 97 /** 98 * Sets the opcode of this instruction. 99 * 100 * @param opcode 101 * the new instruction opcode. This opcode must be IFEQ, IFNE, 102 * IFLT, IFGE, IFGT, IFLE, IF_ICMPEQ, IF_ICMPNE, IF_ICMPLT, 103 * IF_ICMPGE, IF_ICMPGT, IF_ICMPLE, IF_ACMPEQ, IF_ACMPNE, GOTO, 104 * JSR, IFNULL or IFNONNULL. 105 */ 106 public void setOpcode(final int opcode) { 107 this.opcode = opcode; 108 } 109 110 @Override 111 public int getType() { 112 return JUMP_INSN; 113 } 114 115 @Override 116 public void accept(final MethodVisitor mv) { 117 mv.visitJumpInsn(opcode, label.getLabel()); 118 acceptAnnotations(mv); 119 } 120 121 @Override 122 public AbstractInsnNode clone(final Map<LabelNode, LabelNode> labels) { 123 return new JumpInsnNode(opcode, clone(label, labels)) 124 .cloneAnnotations(this); 125 } 126} 127