/*
* 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 javassist.bytecode.annotation;
import javassist.
ClassPool;
import javassist.bytecode.
BadBytecode;
import javassist.bytecode.
ConstPool;
import javassist.bytecode.
Descriptor;
import javassist.bytecode.
SignatureAttribute;
import java.io.
IOException;
import java.lang.reflect.
Method;
/**
* Class value.
*
* @author <a href="mailto:bill@jboss.org">Bill Burke</a>
* @author Shigeru Chiba
*/
public class
ClassMemberValue extends
MemberValue {
int
valueIndex;
/**
* Constructs a class value. The initial value is specified
* by the constant pool entry at the given index.
*
* @param index the index of a CONSTANT_Utf8_info structure.
*/
public
ClassMemberValue(int
index,
ConstPool cp) {
super('c',
cp);
this.
valueIndex =
index;
}
/**
* Constructs a class value.
*
* @param className the initial value.
*/
public
ClassMemberValue(
String className,
ConstPool cp) {
super('c',
cp);
setValue(
className);
}
/**
* Constructs a class value.
* The initial value is java.lang.Class.
*/
public
ClassMemberValue(
ConstPool cp) {
super('c',
cp);
setValue("java.lang.Class");
}
Object getValue(
ClassLoader cl,
ClassPool cp,
Method m)
throws
ClassNotFoundException {
final
String classname =
getValue();
if (
classname.
equals("void"))
return void.class;
else if (
classname.
equals("int"))
return int.class;
else if (
classname.
equals("byte"))
return byte.class;
else if (
classname.
equals("long"))
return long.class;
else if (
classname.
equals("double"))
return double.class;
else if (
classname.
equals("float"))
return float.class;
else if (
classname.
equals("char"))
return char.class;
else if (
classname.
equals("short"))
return short.class;
else if (
classname.
equals("boolean"))
return boolean.class;
else
return
loadClass(
cl,
classname);
}
Class getType(
ClassLoader cl) throws
ClassNotFoundException {
return
loadClass(
cl, "java.lang.Class");
}
/**
* Obtains the value of the member.
*
* @return fully-qualified class name.
*/
public
String getValue() {
String v =
cp.
getUtf8Info(
valueIndex);
try {
return
SignatureAttribute.
toTypeSignature(
v).
toString();
} catch (
BadBytecode e) {
throw new
RuntimeException(
e);
}
}
/**
* Sets the value of the member.
*
* @param newClassName fully-qualified class name.
*/
public void
setValue(
String newClassName) {
String setTo =
Descriptor.
of(
newClassName);
valueIndex =
cp.
addUtf8Info(
setTo);
}
/**
* Obtains the string representation of this object.
*/
public
String toString() {
return
getValue() + ".class";
}
/**
* Writes the value.
*/
public void write(
AnnotationsWriter writer) throws
IOException {
writer.
classInfoIndex(
cp.
getUtf8Info(
valueIndex));
}
/**
* Accepts a visitor.
*/
public void accept(
MemberValueVisitor visitor) {
visitor.
visitClassMemberValue(this);
}
}