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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.
*
* 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.bytecode.ConstPool;
import javassist.bytecode.Descriptor;
import javassist.CtClass;
import javassist.CtMethod;
import javassist.CtPrimitiveType;
import java.io.DataInput;
import java.io.DataOutputStream;
import java.io.IOException;
import java.util.LinkedHashMap;
import java.util.HashMap;
import java.util.Set;
import java.util.Iterator;
/**
* Comment
*
* @author <a href="mailto:bill@jboss.org">Bill Burke</a>
* @version $Revision: 1.5 $
*
**/
public class AnnotationInfo
{
short type_index;
LinkedHashMap members;
HashMap memberName2Index;
ConstPool cp;
private AnnotationInfo()
{
}
private MemberValue createMemberValue(ConstPool cp, CtClass returnType) throws javassist.NotFoundException
{
if (returnType.equals(CtPrimitiveType.booleanType))
{
return new BooleanMemberValue(cp);
}
else if (returnType.equals(CtPrimitiveType.byteType))
{
return new ByteMemberValue(cp);
}
else if (returnType.equals(CtPrimitiveType.charType))
{
return new CharMemberValue(cp);
}
else if (returnType.equals(CtPrimitiveType.doubleType))
{
return new DoubleMemberValue(cp);
}
else if (returnType.equals(CtPrimitiveType.floatType))
{
return new FloatMemberValue(cp);
}
else if (returnType.equals(CtPrimitiveType.intType))
{
return new IntegerMemberValue(cp);
}
else if (returnType.equals(CtPrimitiveType.longType))
{
return new LongMemberValue(cp);
}
else if (returnType.equals(CtPrimitiveType.shortType))
{
return new ShortMemberValue(cp);
}
else if (returnType.getName().equals("java.lang.Class"))
{
return new ClassMemberValue(cp);
}
else if (returnType.getName().equals("java.lang.String") || returnType.getName().equals("String"))
{
return new StringMemberValue(cp);
}
else if (returnType.isArray())
{
CtClass arrayType = returnType.getComponentType();
MemberValue type = createMemberValue(cp, arrayType);
return new ArrayMemberValue(type, cp);
}
else if (returnType.isInterface())
{
AnnotationInfo info = new AnnotationInfo(cp, returnType);
return new AnnotationMemberValue(info, cp);
}
else
{
// treat as enum. I know this is not typed, but JBoss has an Annotation Compiler for JDK 1.4
// and I want it to work with that. - Bill Burke
return new EnumMemberValue(returnType.getName(), cp);
}
}
/**
* todo Enums are not supported right now.
* This is for creation at runtime
* @param clazz
*/
public AnnotationInfo(ConstPool cp, CtClass clazz) throws javassist.NotFoundException
{
if (!clazz.isInterface()) throw new RuntimeException("Only interfaces are allowed for AnnotationInfo creation.");
this.cp = cp;
// beta1 type_index = (short) cp.addClassInfo(clazz);
type_index = (short)cp.addUtf8Info(Descriptor.of(clazz.getName()));
CtMethod methods[] = clazz.getDeclaredMethods();
if (methods.length > 0)
{
members = new LinkedHashMap();
memberName2Index = new HashMap();
}
for (int i = 0; i < methods.length; i++)
{
CtClass returnType = methods[i].getReturnType();
addMemberValue(methods[i].getName(), createMemberValue(cp, returnType));
}
}
private void addMemberValue(String name, MemberValue value)
{
short index = (short) cp.addUtf8Info(name);
members.put(name, value);
memberName2Index.put(name, new Short(index));
value.cp = this.cp;
}
public String getAnnotationType()
{
String name = Descriptor.toClassName(cp.getUtf8Info(type_index));
return name;
}
public Set getMemberNames()
{
if (members == null) return null;
return members.keySet();
}
public MemberValue getMemberValue(String member)
{
if (members == null) return null;
return (MemberValue) members.get(member);
}
public static AnnotationInfo readAnnotationInfo(ConstPool cp, DataInput di) throws java.io.IOException
{
AnnotationInfo info = new AnnotationInfo();
info.cp = cp;
short type_index = di.readShort();
info.type_index = type_index;
short num_member_value_pairs = di.readShort();
if (num_member_value_pairs > 0)
{
info.members = new LinkedHashMap();
info.memberName2Index = new HashMap();
}
for (int j = 0; j < num_member_value_pairs; j++)
{
short member_name_index = di.readShort();
String memberName = cp.getUtf8Info(member_name_index);
MemberValue value = MemberValue.readMemberValue(cp, di);
info.members.put(memberName, value);
info.memberName2Index.put(memberName, new Short(member_name_index));
}
return info;
}
public void write(DataOutputStream dos) throws IOException
{
dos.writeShort(type_index);
if (members == null)
{
dos.writeShort((short)0);
return;
}
dos.writeShort(members.size());
Iterator it = members.keySet().iterator();
while (it.hasNext())
{
String name = (String) it.next();
Short index = (Short) memberName2Index.get(name);
dos.writeShort(index.shortValue());
MemberValue value = (MemberValue) members.get(name);
value.write(dos);
}
}
public String toString()
{
StringBuffer buf = new StringBuffer("@");
buf.append(getAnnotationType());
if (members != null)
{
buf.append("(");
Iterator mit = members.keySet().iterator();
while (mit.hasNext())
{
String name = (String) mit.next();
buf.append(name).append("=").append(getMemberValue(name));
if (mit.hasNext()) buf.append(", ");
}
buf.append(")");
}
return buf.toString();
}
}
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