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feilong is a suite of core and expanded libraries that include utility classes, http, excel,cvs, io classes, and much much more.

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/*
 * Javassist, a Java-bytecode translator toolkit.
 * Copyright (C) 2004 Bill Burke. All Rights Reserved.
 *
 * The contents of this file are subject to the Mozilla Public License Version
 * 1.1 (the "License"); you may not use this file except in compliance with
 * the License.  Alternatively, the contents of this file may be used under
 * the terms of the GNU Lesser General Public License Version 2.1 or later,
 * or the Apache License Version 2.0.
 *
 * Software distributed under the License is distributed on an "AS IS" basis,
 * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
 * for the specific language governing rights and limitations under the
 * License.
 */
package com.feilong.lib.javassist.bytecode.annotation;

import java.io.IOException;
import java.lang.reflect.Method;

import com.feilong.lib.javassist.ClassPool;
import com.feilong.lib.javassist.bytecode.ConstPool;

/**
 * Boolean constant value.
 *
 * @author Bill Burke
 * @author Shigeru Chiba
 */
public class BooleanMemberValue extends MemberValue{

    int valueIndex;

    /**
     * Constructs a boolean constant value. The initial value is specified
     * by the constant pool entry at the given index.
     *
     * @param index
     *            the index of a CONSTANT_Integer_info structure.
     */
    public BooleanMemberValue(int index, ConstPool cp){
        super('Z', cp);
        this.valueIndex = index;
    }

    /**
     * Constructs a boolean constant value.
     *
     * @param b
     *            the initial value.
     */
    public BooleanMemberValue(boolean b, ConstPool cp){
        super('Z', cp);
        setValue(b);
    }

    /**
     * Constructs a boolean constant value. The initial value is false.
     */
    public BooleanMemberValue(ConstPool cp){
        super('Z', cp);
        setValue(false);
    }

    @Override
    Object getValue(ClassLoader cl,ClassPool cp,Method m){
        return Boolean.valueOf(getValue());
    }

    @Override
    Class getType(ClassLoader cl){
        return boolean.class;
    }

    /**
     * Obtains the value of the member.
     */
    public boolean getValue(){
        return cp.getIntegerInfo(valueIndex) != 0;
    }

    /**
     * Sets the value of the member.
     */
    public void setValue(boolean newValue){
        valueIndex = cp.addIntegerInfo(newValue ? 1 : 0);
    }

    /**
     * Obtains the string representation of this object.
     */
    @Override
    public String toString(){
        return getValue() ? "true" : "false";
    }

    /**
     * Writes the value.
     */
    @Override
    public void write(AnnotationsWriter writer) throws IOException{
        writer.constValueIndex(getValue());
    }

    /**
     * Accepts a visitor.
     */
    @Override
    public void accept(MemberValueVisitor visitor){
        visitor.visitBooleanMemberValue(this);
    }
}