Java Aspectj Usage createConstant(InstructionFactory fact, int value)

Description

create Constant

License

Open Source License

Declaration

public static Instruction createConstant(InstructionFactory fact, int value) 

Method Source Code

//package com.java2s;
/* *******************************************************************
 * Copyright (c) 2002 Palo Alto Research Center, Incorporated (PARC).
 * All rights reserved. /*from  ww w  .  j av  a 2  s .  c  o m*/
 * This program and the accompanying materials are made available 
 * under the terms of the Eclipse Public License v1.0 
 * which accompanies this distribution and is available at 
 * http://www.eclipse.org/legal/epl-v10.html 
 *  
 * Contributors: 
 *     PARC     initial implementation 
 * ******************************************************************/

import org.aspectj.apache.bcel.Constants;

import org.aspectj.apache.bcel.generic.Instruction;
import org.aspectj.apache.bcel.generic.InstructionByte;
import org.aspectj.apache.bcel.generic.InstructionCP;
import org.aspectj.apache.bcel.generic.InstructionConstants;
import org.aspectj.apache.bcel.generic.InstructionFactory;

import org.aspectj.apache.bcel.generic.InstructionShort;

public class Main {
    public static Instruction createConstant(InstructionFactory fact, int value) {
        Instruction inst;
        switch (value) {
        case -1:
            inst = InstructionConstants.ICONST_M1;
            break;
        case 0:
            inst = InstructionConstants.ICONST_0;
            break;
        case 1:
            inst = InstructionConstants.ICONST_1;
            break;
        case 2:
            inst = InstructionConstants.ICONST_2;
            break;
        case 3:
            inst = InstructionConstants.ICONST_3;
            break;
        case 4:
            inst = InstructionConstants.ICONST_4;
            break;
        case 5:
            inst = InstructionConstants.ICONST_5;
            break;
        default:
            if (value <= Byte.MAX_VALUE && value >= Byte.MIN_VALUE) {
                inst = new InstructionByte(Constants.BIPUSH, (byte) value);
            } else if (value <= Short.MAX_VALUE && value >= Short.MIN_VALUE) {
                inst = new InstructionShort(Constants.SIPUSH, (short) value);
            } else {
                int ii = fact.getClassGen().getConstantPool().addInteger(value);
                inst = new InstructionCP(value <= Constants.MAX_BYTE ? Constants.LDC : Constants.LDC_W, ii);
            }
            break;
        }
        return inst;
    }
}

Related

1. classOrInterface(int access_flags)
2. collectArguments(JoinPoint jp)
3. combine(String[] one, String[] two)
4. convertToFile(String path)
5. copyInstruction(Instruction i)
6. createInstanceof(InstructionFactory fact, ReferenceType t)
7. genPointcutDetails(Pointcut pcd)
8. genSignature(IProgramElement node)
9. getArgsMap(JoinPoint pjp)