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* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
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package com.sun.org.apache.bcel.internal.generic;
import com.sun.org.apache.bcel.internal.Const;
/**
* This interface contains shareable instruction objects.
*
* In order to save memory you can use some instructions multiply,
* since they have an immutable state and are directly derived from
* Instruction. I.e. they have no instance fields that could be
* changed. Since some of these instructions like ICONST_0 occur
* very frequently this can save a lot of time and space. This
* feature is an adaptation of the FlyWeight design pattern, we
* just use an array instead of a factory.
*
* The Instructions can also accessed directly under their names, so
* it's possible to write il.append(Instruction.ICONST_0);
*
* @version $Id: InstructionConstants.java 1695415 2015-08-12 01:02:39Z chas $
*/
public final class InstructionConst {
/**
* Predefined instruction objects
*/
/*
* NOTE these are not currently immutable, because Instruction
* has mutable protected fields opcode and length.
*/
public static final Instruction NOP = new NOP();
public static final Instruction ACONST_NULL = new ACONST_NULL();
public static final Instruction ICONST_M1 = new ICONST(-1);
public static final Instruction ICONST_0 = new ICONST(0);
public static final Instruction ICONST_1 = new ICONST(1);
public static final Instruction ICONST_2 = new ICONST(2);
public static final Instruction ICONST_3 = new ICONST(3);
public static final Instruction ICONST_4 = new ICONST(4);
public static final Instruction ICONST_5 = new ICONST(5);
public static final Instruction LCONST_0 = new LCONST(0);
public static final Instruction LCONST_1 = new LCONST(1);
public static final Instruction FCONST_0 = new FCONST(0);
public static final Instruction FCONST_1 = new FCONST(1);
public static final Instruction FCONST_2 = new FCONST(2);
public static final Instruction DCONST_0 = new DCONST(0);
public static final Instruction DCONST_1 = new DCONST(1);
public static final ArrayInstruction IALOAD = new IALOAD();
public static final ArrayInstruction LALOAD = new LALOAD();
public static final ArrayInstruction FALOAD = new FALOAD();
public static final ArrayInstruction DALOAD = new DALOAD();
public static final ArrayInstruction AALOAD = new AALOAD();
public static final ArrayInstruction BALOAD = new BALOAD();
public static final ArrayInstruction CALOAD = new CALOAD();
public static final ArrayInstruction SALOAD = new SALOAD();
public static final ArrayInstruction IASTORE = new IASTORE();
public static final ArrayInstruction LASTORE = new LASTORE();
public static final ArrayInstruction FASTORE = new FASTORE();
public static final ArrayInstruction DASTORE = new DASTORE();
public static final ArrayInstruction AASTORE = new AASTORE();
public static final ArrayInstruction BASTORE = new BASTORE();
public static final ArrayInstruction CASTORE = new CASTORE();
public static final ArrayInstruction SASTORE = new SASTORE();
public static final StackInstruction POP = new POP();
public static final StackInstruction POP2 = new POP2();
public static final StackInstruction DUP = new DUP();
public static final StackInstruction DUP_X1 = new DUP_X1();
public static final StackInstruction DUP_X2 = new DUP_X2();
public static final StackInstruction DUP2 = new DUP2();
public static final StackInstruction DUP2_X1 = new DUP2_X1();
public static final StackInstruction DUP2_X2 = new DUP2_X2();
public static final StackInstruction SWAP = new SWAP();
public static final ArithmeticInstruction IADD = new IADD();
public static final ArithmeticInstruction LADD = new LADD();
public static final ArithmeticInstruction FADD = new FADD();
public static final ArithmeticInstruction DADD = new DADD();
public static final ArithmeticInstruction ISUB = new ISUB();
public static final ArithmeticInstruction LSUB = new LSUB();
public static final ArithmeticInstruction FSUB = new FSUB();
public static final ArithmeticInstruction DSUB = new DSUB();
public static final ArithmeticInstruction IMUL = new IMUL();
public static final ArithmeticInstruction LMUL = new LMUL();
public static final ArithmeticInstruction FMUL = new FMUL();
public static final ArithmeticInstruction DMUL = new DMUL();
public static final ArithmeticInstruction IDIV = new IDIV();
public static final ArithmeticInstruction LDIV = new LDIV();
public static final ArithmeticInstruction FDIV = new FDIV();
public static final ArithmeticInstruction DDIV = new DDIV();
public static final ArithmeticInstruction IREM = new IREM();
public static final ArithmeticInstruction LREM = new LREM();
public static final ArithmeticInstruction FREM = new FREM();
public static final ArithmeticInstruction DREM = new DREM();
public static final ArithmeticInstruction INEG = new INEG();
public static final ArithmeticInstruction LNEG = new LNEG();
public static final ArithmeticInstruction FNEG = new FNEG();
public static final ArithmeticInstruction DNEG = new DNEG();
public static final ArithmeticInstruction ISHL = new ISHL();
public static final ArithmeticInstruction LSHL = new LSHL();
public static final ArithmeticInstruction ISHR = new ISHR();
public static final ArithmeticInstruction LSHR = new LSHR();
public static final ArithmeticInstruction IUSHR = new IUSHR();
public static final ArithmeticInstruction LUSHR = new LUSHR();
public static final ArithmeticInstruction IAND = new IAND();
public static final ArithmeticInstruction LAND = new LAND();
public static final ArithmeticInstruction IOR = new IOR();
public static final ArithmeticInstruction LOR = new LOR();
public static final ArithmeticInstruction IXOR = new IXOR();
public static final ArithmeticInstruction LXOR = new LXOR();
public static final ConversionInstruction I2L = new I2L();
public static final ConversionInstruction I2F = new I2F();
public static final ConversionInstruction I2D = new I2D();
public static final ConversionInstruction L2I = new L2I();
public static final ConversionInstruction L2F = new L2F();
public static final ConversionInstruction L2D = new L2D();
public static final ConversionInstruction F2I = new F2I();
public static final ConversionInstruction F2L = new F2L();
public static final ConversionInstruction F2D = new F2D();
public static final ConversionInstruction D2I = new D2I();
public static final ConversionInstruction D2L = new D2L();
public static final ConversionInstruction D2F = new D2F();
public static final ConversionInstruction I2B = new I2B();
public static final ConversionInstruction I2C = new I2C();
public static final ConversionInstruction I2S = new I2S();
public static final Instruction LCMP = new LCMP();
public static final Instruction FCMPL = new FCMPL();
public static final Instruction FCMPG = new FCMPG();
public static final Instruction DCMPL = new DCMPL();
public static final Instruction DCMPG = new DCMPG();
public static final ReturnInstruction IRETURN = new IRETURN();
public static final ReturnInstruction LRETURN = new LRETURN();
public static final ReturnInstruction FRETURN = new FRETURN();
public static final ReturnInstruction DRETURN = new DRETURN();
public static final ReturnInstruction ARETURN = new ARETURN();
public static final ReturnInstruction RETURN = new RETURN();
public static final Instruction ARRAYLENGTH = new ARRAYLENGTH();
public static final Instruction ATHROW = new ATHROW();
public static final Instruction MONITORENTER = new MONITORENTER();
public static final Instruction MONITOREXIT = new MONITOREXIT();
/** You can use these constants in multiple places safely, if you can guarantee
* that you will never alter their internal values, e.g. call setIndex().
*/
public static final LocalVariableInstruction THIS = new ALOAD(0);
public static final LocalVariableInstruction ALOAD_0 = THIS;
public static final LocalVariableInstruction ALOAD_1 = new ALOAD(1);
public static final LocalVariableInstruction ALOAD_2 = new ALOAD(2);
public static final LocalVariableInstruction ILOAD_0 = new ILOAD(0);
public static final LocalVariableInstruction ILOAD_1 = new ILOAD(1);
public static final LocalVariableInstruction ILOAD_2 = new ILOAD(2);
public static final LocalVariableInstruction ASTORE_0 = new ASTORE(0);
public static final LocalVariableInstruction ASTORE_1 = new ASTORE(1);
public static final LocalVariableInstruction ASTORE_2 = new ASTORE(2);
public static final LocalVariableInstruction ISTORE_0 = new ISTORE(0);
public static final LocalVariableInstruction ISTORE_1 = new ISTORE(1);
public static final LocalVariableInstruction ISTORE_2 = new ISTORE(2);
/** Get object via its opcode, for immutable instructions like
* branch instructions entries are set to null.
*/
private static final Instruction[] INSTRUCTIONS = new Instruction[256];
static {
INSTRUCTIONS[Const.NOP] = NOP;
INSTRUCTIONS[Const.ACONST_NULL] = ACONST_NULL;
INSTRUCTIONS[Const.ICONST_M1] = ICONST_M1;
INSTRUCTIONS[Const.ICONST_0] = ICONST_0;
INSTRUCTIONS[Const.ICONST_1] = ICONST_1;
INSTRUCTIONS[Const.ICONST_2] = ICONST_2;
INSTRUCTIONS[Const.ICONST_3] = ICONST_3;
INSTRUCTIONS[Const.ICONST_4] = ICONST_4;
INSTRUCTIONS[Const.ICONST_5] = ICONST_5;
INSTRUCTIONS[Const.LCONST_0] = LCONST_0;
INSTRUCTIONS[Const.LCONST_1] = LCONST_1;
INSTRUCTIONS[Const.FCONST_0] = FCONST_0;
INSTRUCTIONS[Const.FCONST_1] = FCONST_1;
INSTRUCTIONS[Const.FCONST_2] = FCONST_2;
INSTRUCTIONS[Const.DCONST_0] = DCONST_0;
INSTRUCTIONS[Const.DCONST_1] = DCONST_1;
INSTRUCTIONS[Const.IALOAD] = IALOAD;
INSTRUCTIONS[Const.LALOAD] = LALOAD;
INSTRUCTIONS[Const.FALOAD] = FALOAD;
INSTRUCTIONS[Const.DALOAD] = DALOAD;
INSTRUCTIONS[Const.AALOAD] = AALOAD;
INSTRUCTIONS[Const.BALOAD] = BALOAD;
INSTRUCTIONS[Const.CALOAD] = CALOAD;
INSTRUCTIONS[Const.SALOAD] = SALOAD;
INSTRUCTIONS[Const.IASTORE] = IASTORE;
INSTRUCTIONS[Const.LASTORE] = LASTORE;
INSTRUCTIONS[Const.FASTORE] = FASTORE;
INSTRUCTIONS[Const.DASTORE] = DASTORE;
INSTRUCTIONS[Const.AASTORE] = AASTORE;
INSTRUCTIONS[Const.BASTORE] = BASTORE;
INSTRUCTIONS[Const.CASTORE] = CASTORE;
INSTRUCTIONS[Const.SASTORE] = SASTORE;
INSTRUCTIONS[Const.POP] = POP;
INSTRUCTIONS[Const.POP2] = POP2;
INSTRUCTIONS[Const.DUP] = DUP;
INSTRUCTIONS[Const.DUP_X1] = DUP_X1;
INSTRUCTIONS[Const.DUP_X2] = DUP_X2;
INSTRUCTIONS[Const.DUP2] = DUP2;
INSTRUCTIONS[Const.DUP2_X1] = DUP2_X1;
INSTRUCTIONS[Const.DUP2_X2] = DUP2_X2;
INSTRUCTIONS[Const.SWAP] = SWAP;
INSTRUCTIONS[Const.IADD] = IADD;
INSTRUCTIONS[Const.LADD] = LADD;
INSTRUCTIONS[Const.FADD] = FADD;
INSTRUCTIONS[Const.DADD] = DADD;
INSTRUCTIONS[Const.ISUB] = ISUB;
INSTRUCTIONS[Const.LSUB] = LSUB;
INSTRUCTIONS[Const.FSUB] = FSUB;
INSTRUCTIONS[Const.DSUB] = DSUB;
INSTRUCTIONS[Const.IMUL] = IMUL;
INSTRUCTIONS[Const.LMUL] = LMUL;
INSTRUCTIONS[Const.FMUL] = FMUL;
INSTRUCTIONS[Const.DMUL] = DMUL;
INSTRUCTIONS[Const.IDIV] = IDIV;
INSTRUCTIONS[Const.LDIV] = LDIV;
INSTRUCTIONS[Const.FDIV] = FDIV;
INSTRUCTIONS[Const.DDIV] = DDIV;
INSTRUCTIONS[Const.IREM] = IREM;
INSTRUCTIONS[Const.LREM] = LREM;
INSTRUCTIONS[Const.FREM] = FREM;
INSTRUCTIONS[Const.DREM] = DREM;
INSTRUCTIONS[Const.INEG] = INEG;
INSTRUCTIONS[Const.LNEG] = LNEG;
INSTRUCTIONS[Const.FNEG] = FNEG;
INSTRUCTIONS[Const.DNEG] = DNEG;
INSTRUCTIONS[Const.ISHL] = ISHL;
INSTRUCTIONS[Const.LSHL] = LSHL;
INSTRUCTIONS[Const.ISHR] = ISHR;
INSTRUCTIONS[Const.LSHR] = LSHR;
INSTRUCTIONS[Const.IUSHR] = IUSHR;
INSTRUCTIONS[Const.LUSHR] = LUSHR;
INSTRUCTIONS[Const.IAND] = IAND;
INSTRUCTIONS[Const.LAND] = LAND;
INSTRUCTIONS[Const.IOR] = IOR;
INSTRUCTIONS[Const.LOR] = LOR;
INSTRUCTIONS[Const.IXOR] = IXOR;
INSTRUCTIONS[Const.LXOR] = LXOR;
INSTRUCTIONS[Const.I2L] = I2L;
INSTRUCTIONS[Const.I2F] = I2F;
INSTRUCTIONS[Const.I2D] = I2D;
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