scouter.javassist.bytecode.annotation.DoubleMemberValue Maven / Gradle / Ivy
/*
* 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 scouter.javassist.bytecode.annotation;
import java.io.IOException;
import java.lang.reflect.Method;
import scouter.javassist.ClassPool;
import scouter.javassist.bytecode.ConstPool;
/**
* Double floating-point number constant value.
*
* @author Bill Burke
* @author Shigeru Chiba
* @version $Revision: 1.7 $
*/
public class DoubleMemberValue extends MemberValue {
int valueIndex;
/**
* Constructs a double constant value. The initial value is specified
* by the constant pool entry at the given index.
*
* @param index the index of a CONSTANT_Double_info structure.
*/
public DoubleMemberValue(int index, ConstPool cp) {
super('D', cp);
this.valueIndex = index;
}
/**
* Constructs a double constant value.
*
* @param d the initial value.
*/
public DoubleMemberValue(double d, ConstPool cp) {
super('D', cp);
setValue(d);
}
/**
* Constructs a double constant value. The initial value is 0.0.
*/
public DoubleMemberValue(ConstPool cp) {
super('D', cp);
setValue(0.0);
}
@Override
Object getValue(ClassLoader cl, ClassPool cp, Method m) {
return Double.valueOf(getValue());
}
@Override
Class getType(ClassLoader cl) {
return double.class;
}
/**
* Obtains the value of the member.
*/
public double getValue() {
return cp.getDoubleInfo(valueIndex);
}
/**
* Sets the value of the member.
*/
public void setValue(double newValue) {
valueIndex = cp.addDoubleInfo(newValue);
}
/**
* Obtains the string representation of this object.
*/
@Override
public String toString() {
return Double.toString(getValue());
}
/**
* Writes the value.
*/
@Override
public void write(AnnotationsWriter writer) throws IOException {
writer.constValueIndex(getValue());
}
/**
* Accepts a visitor.
*/
@Override
public void accept(MemberValueVisitor visitor) {
visitor.visitDoubleMemberValue(this);
}
}