/*
* 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.
ConstPool;
import javassist.bytecode.
Descriptor;
import java.io.
IOException;
import java.lang.reflect.
Array;
import java.lang.reflect.
Method;
/**
* The value of a member declared in an annotation.
*
* @see Annotation#getMemberValue(String)
* @author <a href="mailto:bill@jboss.org">Bill Burke</a>
* @author Shigeru Chiba
*/
public abstract class
MemberValue {
ConstPool cp;
char
tag;
MemberValue(char
tag,
ConstPool cp) {
this.
cp =
cp;
this.
tag =
tag;
}
/**
* Returns the value. If the value type is a primitive type, the
* returned value is boxed.
*/
abstract
Object getValue(
ClassLoader cl,
ClassPool cp,
Method m)
throws
ClassNotFoundException;
abstract
Class getType(
ClassLoader cl) throws
ClassNotFoundException;
static
Class loadClass(
ClassLoader cl,
String classname)
throws
ClassNotFoundException,
NoSuchClassError
{
try {
return
Class.
forName(
convertFromArray(
classname), true,
cl);
}
catch (
LinkageError e) {
throw new
NoSuchClassError(
classname,
e);
}
}
private static
String convertFromArray(
String classname)
{
int
index =
classname.
indexOf("[]");
if (
index != -1) {
String rawType =
classname.
substring(0,
index);
StringBuffer sb = new
StringBuffer(
Descriptor.
of(
rawType));
while (
index != -1) {
sb.
insert(0, "[");
index =
classname.
indexOf("[]",
index + 1);
}
return
sb.
toString().
replace('/', '.');
}
return
classname;
}
/**
* Accepts a visitor.
*/
public abstract void
accept(
MemberValueVisitor visitor);
/**
* Writes the value.
*/
public abstract void
write(
AnnotationsWriter w) throws
IOException;
}