/*

 * reserved comment block

 * DO NOT REMOVE OR ALTER!

 */

package com.sun.org.apache.bcel.internal.generic;

/* ====================================================================

 * The Apache Software License, Version 1.1

 *

 * Copyright (c) 2001 The Apache Software Foundation.  All rights

 * reserved.

 *

 * Redistribution and use in source and binary forms, with or without

 * modification, are permitted provided that the following conditions

 * are met:

 *

 * 1. Redistributions of source code must retain the above copyright

 *    notice, this list of conditions and the following disclaimer.

 *

 * 2. Redistributions in binary form must reproduce the above copyright

 *    notice, this list of conditions and the following disclaimer in

 *    the documentation and/or other materials provided with the

 *    distribution.

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 * 3. The end-user documentation included with the redistribution,

 *    if any, must include the following acknowledgment:

 *       "This product includes software developed by the

 *        Apache Software Foundation (http://www.apache.org/)."

 *    Alternately, this acknowledgment may appear in the software itself,

 *    if and wherever such third-party acknowledgments normally appear.

 *

 * 4. The names "Apache" and "Apache Software Foundation" and

 *    "Apache BCEL" must not be used to endorse or promote products

 *    derived from this software without prior written permission. For

 *    written permission, please contact apache@apache.org.

 *

 * 5. Products derived from this software may not be called "Apache",

 *    "Apache BCEL", nor may "Apache" appear in their name, without

 *    prior written permission of the Apache Software Foundation.

 *

 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED

 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES

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 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF

 * SUCH DAMAGE.

 * ====================================================================

 *

 * This software consists of voluntary contributions made by many

 * individuals on behalf of the Apache Software Foundation.  For more

 * information on the Apache Software Foundation, please see

 * <http://www.apache.org/>.

 */

import com.sun.org.apache.bcel.internal.Constants;

/**

 * 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);

 *

 * @author  <A HREF="mailto:markus.dahm@berlin.de">M. Dahm</A>

 */

public interface InstructionConstants {

  /** Predefined instruction objects

   */

  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.

   */

  public static final Instruction[] INSTRUCTIONS = new Instruction[256];

  /** Interfaces may have no static initializers, so we simulate this

   * with an inner class.

   */

  static final Clinit bla = new Clinit();

  static class Clinit {

    Clinit() {

      INSTRUCTIONS[Constants.NOP] = NOP;

      INSTRUCTIONS[Constants.ACONST_NULL] = ACONST_NULL;

      INSTRUCTIONS[Constants.ICONST_M1] = ICONST_M1;

      INSTRUCTIONS[Constants.ICONST_0] = ICONST_0;

      INSTRUCTIONS[Constants.ICONST_1] = ICONST_1;

      INSTRUCTIONS[Constants.ICONST_2] = ICONST_2;

      INSTRUCTIONS[Constants.ICONST_3] = ICONST_3;

      INSTRUCTIONS[Constants.ICONST_4] = ICONST_4;

      INSTRUCTIONS[Constants.ICONST_5] = ICONST_5;

      INSTRUCTIONS[Constants.LCONST_0] = LCONST_0;

      INSTRUCTIONS[Constants.LCONST_1] = LCONST_1;

      INSTRUCTIONS[Constants.FCONST_0] = FCONST_0;

      INSTRUCTIONS[Constants.FCONST_1] = FCONST_1;

      INSTRUCTIONS[Constants.FCONST_2] = FCONST_2;

      INSTRUCTIONS[Constants.DCONST_0] = DCONST_0;

      INSTRUCTIONS[Constants.DCONST_1] = DCONST_1;

      INSTRUCTIONS[Constants.IALOAD] = IALOAD;

      INSTRUCTIONS[Constants.LALOAD] = LALOAD;

      INSTRUCTIONS[Constants.FALOAD] = FALOAD;

      INSTRUCTIONS[Constants.DALOAD] = DALOAD;

      INSTRUCTIONS[Constants.AALOAD] = AALOAD;

      INSTRUCTIONS[Constants.BALOAD] = BALOAD;

      INSTRUCTIONS[Constants.CALOAD] = CALOAD;

      INSTRUCTIONS[Constants.SALOAD] = SALOAD;

      INSTRUCTIONS[Constants.IASTORE] = IASTORE;

      INSTRUCTIONS[Constants.LASTORE] = LASTORE;

      INSTRUCTIONS[Constants.FASTORE] = FASTORE;

      INSTRUCTIONS[Constants.DASTORE] = DASTORE;

      INSTRUCTIONS[Constants.AASTORE] = AASTORE;

      INSTRUCTIONS[Constants.BASTORE] = BASTORE;

      INSTRUCTIONS[Constants.CASTORE] = CASTORE;

      INSTRUCTIONS[Constants.SASTORE] = SASTORE;

      INSTRUCTIONS[Constants.POP] = POP;

      INSTRUCTIONS[Constants.POP2] = POP2;

      INSTRUCTIONS[Constants.DUP] = DUP;

      INSTRUCTIONS[Constants.DUP_X1] = DUP_X1;

      INSTRUCTIONS[Constants.DUP_X2] = DUP_X2;

      INSTRUCTIONS[Constants.DUP2] = DUP2;

      INSTRUCTIONS[Constants.DUP2_X1] = DUP2_X1;

      INSTRUCTIONS[Constants.DUP2_X2] = DUP2_X2;

      INSTRUCTIONS[Constants.SWAP] = SWAP;

      INSTRUCTIONS[Constants.IADD] = IADD;

      INSTRUCTIONS[Constants.LADD] = LADD;

      INSTRUCTIONS[Constants.FADD] = FADD;

      INSTRUCTIONS[Constants.DADD] = DADD;

      INSTRUCTIONS[Constants.ISUB] = ISUB;

      INSTRUCTIONS[Constants.LSUB] = LSUB;

      INSTRUCTIONS[Constants.FSUB] = FSUB;

      INSTRUCTIONS[Constants.DSUB] = DSUB;

      INSTRUCTIONS[Constants.IMUL] = IMUL;

      INSTRUCTIONS[Constants.LMUL] = LMUL;

      INSTRUCTIONS[Constants.FMUL] = FMUL;

      INSTRUCTIONS[Constants.DMUL] = DMUL;

      INSTRUCTIONS[Constants.IDIV] = IDIV;

      INSTRUCTIONS[Constants.LDIV] = LDIV;

      INSTRUCTIONS[Constants.FDIV] = FDIV;

      INSTRUCTIONS[Constants.DDIV] = DDIV;

      INSTRUCTIONS[Constants.IREM] = IREM;

      INSTRUCTIONS[Constants.LREM] = LREM;

      INSTRUCTIONS[Constants.FREM] = FREM;

      INSTRUCTIONS[Constants.DREM] = DREM;

      INSTRUCTIONS[Constants.INEG] = INEG;

      INSTRUCTIONS[Constants.LNEG] = LNEG;

      INSTRUCTIONS[Constants.FNEG] = FNEG;

      INSTRUCTIONS[Constants.DNEG] = DNEG;

      INSTRUCTIONS[Constants.ISHL] = ISHL;

      INSTRUCTIONS[Constants.LSHL] = LSHL;

      INSTRUCTIONS[Constants.ISHR] = ISHR;

      INSTRUCTIONS[Constants.LSHR] = LSHR;

      INSTRUCTIONS[Constants.IUSHR] = IUSHR;

      INSTRUCTIONS[Constants.LUSHR] = LUSHR;

      INSTRUCTIONS[Constants.IAND] = IAND;

      INSTRUCTIONS[Constants.LAND] = LAND;

      INSTRUCTIONS[Constants.IOR] = IOR;

      INSTRUCTIONS[Constants.LOR] = LOR;

      INSTRUCTIONS[Constants.IXOR] = IXOR;

      INSTRUCTIONS[Constants.LXOR] = LXOR;

      INSTRUCTIONS[Constants.I2L] = I2L;

      INSTRUCTIONS[Constants.I2F] = I2F;

      INSTRUCTIONS[Constants.I2D] = I2D;

      INSTRUCTIONS[Constants.L2I] = L2I;

      INSTRUCTIONS[Constants.L2F] = L2F;

      INSTRUCTIONS[Constants.L2D] = L2D;

      INSTRUCTIONS[Constants.F2I] = F2I;

      INSTRUCTIONS[Constants.F2L] = F2L;

      INSTRUCTIONS[Constants.F2D] = F2D;

      INSTRUCTIONS[Constants.D2I] = D2I;

      INSTRUCTIONS[Constants.D2L] = D2L;

      INSTRUCTIONS[Constants.D2F] = D2F;

      INSTRUCTIONS[Constants.I2B] = I2B;

      INSTRUCTIONS[Constants.I2C] = I2C;

      INSTRUCTIONS[Constants.I2S] = I2S;

      INSTRUCTIONS[Constants.LCMP] = LCMP;

      INSTRUCTIONS[Constants.FCMPL] = FCMPL;

      INSTRUCTIONS[Constants.FCMPG] = FCMPG;

      INSTRUCTIONS[Constants.DCMPL] = DCMPL;

      INSTRUCTIONS[Constants.DCMPG] = DCMPG;

      INSTRUCTIONS[Constants.IRETURN] = IRETURN;

      INSTRUCTIONS[Constants.LRETURN] = LRETURN;

      INSTRUCTIONS[Constants.FRETURN] = FRETURN;

      INSTRUCTIONS[Constants.DRETURN] = DRETURN;

      INSTRUCTIONS[Constants.ARETURN] = ARETURN;

      INSTRUCTIONS[Constants.RETURN] = RETURN;

      INSTRUCTIONS[Constants.ARRAYLENGTH] = ARRAYLENGTH;

      INSTRUCTIONS[Constants.ATHROW] = ATHROW;

      INSTRUCTIONS[Constants.MONITORENTER] = MONITORENTER;

      INSTRUCTIONS[Constants.MONITOREXIT] = MONITOREXIT;

    }

  }

}