1 /*** 2 * ASM: a very small and fast Java bytecode manipulation framework 3 * Copyright (c) 2000-2005 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 package org.objectweb.asm.tree; 31 32 import org.objectweb.asm.MethodVisitor; 33 34 /** 35 * A node that represents a zero operand instruction. 36 * 37 * @author Eric Bruneton 38 */ 39 public class InsnNode extends AbstractInsnNode { 40 41 private final static InsnNode[] INSNS; 42 43 static { 44 INSNS = new InsnNode[255]; 45 for (int i = 0; i < INSNS.length; ++i) { 46 INSNS[i] = new InsnNode(i); 47 } 48 } 49 50 /** 51 * Returns the {@link InsnNode} corresponding to the given opcode. 52 * 53 * @deprecated uses the constructor instead. 54 * 55 * @param opcode an instruction opcode. 56 * @return the {@link InsnNode} corresponding to the given opcode. 57 */ 58 public final static InsnNode getByOpcode(final int opcode) { 59 return INSNS[opcode]; 60 } 61 62 /** 63 * Constructs a new {@link InsnNode}. 64 * 65 * @param opcode the opcode of the instruction to be constructed. This 66 * opcode must be NOP, ACONST_NULL, ICONST_M1, ICONST_0, ICONST_1, 67 * ICONST_2, ICONST_3, ICONST_4, ICONST_5, LCONST_0, LCONST_1, 68 * FCONST_0, FCONST_1, FCONST_2, DCONST_0, DCONST_1, IALOAD, LALOAD, 69 * FALOAD, DALOAD, AALOAD, BALOAD, CALOAD, SALOAD, IASTORE, LASTORE, 70 * FASTORE, DASTORE, AASTORE, BASTORE, CASTORE, SASTORE, POP, POP2, 71 * DUP, DUP_X1, DUP_X2, DUP2, DUP2_X1, DUP2_X2, SWAP, IADD, LADD, 72 * FADD, DADD, ISUB, LSUB, FSUB, DSUB, IMUL, LMUL, FMUL, DMUL, IDIV, 73 * LDIV, FDIV, DDIV, IREM, LREM, FREM, DREM, INEG, LNEG, FNEG, DNEG, 74 * ISHL, LSHL, ISHR, LSHR, IUSHR, LUSHR, IAND, LAND, IOR, LOR, IXOR, 75 * LXOR, I2L, I2F, I2D, L2I, L2F, L2D, F2I, F2L, F2D, D2I, D2L, D2F, 76 * I2B, I2C, I2S, LCMP, FCMPL, FCMPG, DCMPL, DCMPG, IRETURN, LRETURN, 77 * FRETURN, DRETURN, ARETURN, RETURN, ARRAYLENGTH, ATHROW, 78 * MONITORENTER, or MONITOREXIT. 79 */ 80 public InsnNode(final int opcode) { 81 super(opcode); 82 } 83 84 /** 85 * Makes the given visitor visit this instruction. 86 * 87 * @param mv a method visitor. 88 */ 89 public void accept(final MethodVisitor mv) { 90 mv.visitInsn(opcode); 91 } 92 93 public int getType() { 94 return INSN; 95 } 96 } 97