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/* *******************************************************************
* Copyright (c) 2004 IBM
* All rights reserved.
* This program and the accompanying materials are made available
* under the terms of the Eclipse Public License v1.0
* which accompanies this distribution and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* Andy Clement - initial implementation {date}
* ******************************************************************/
package org.aspectj.apache.bcel.classfile.annotation;
import java.io.ByteArrayInputStream;
import java.io.DataInputStream;
import java.io.DataOutputStream;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
import org.aspectj.apache.bcel.classfile.Attribute;
import org.aspectj.apache.bcel.classfile.ConstantPool;
public abstract class RuntimeParamAnnos extends Attribute {
private List<AnnotationGen[]> parameterAnnotations;
private boolean visible;
// Keep just a byte stream of the data until someone actually asks for it
private boolean inflated = false;
private byte[] annotation_data;
public RuntimeParamAnnos(byte attrid, boolean visible,
int nameIdx, int len, ConstantPool cpool) {
super(attrid,nameIdx,len,cpool);
this.visible = visible;
parameterAnnotations = new ArrayList<AnnotationGen[]>();
}
public RuntimeParamAnnos(byte attrid,boolean visible,int nameIdx,int len,byte[] data,ConstantPool cpool) {
super(attrid,nameIdx,len,cpool);
this.visible = visible;
parameterAnnotations = new ArrayList<AnnotationGen[]>();
annotation_data = data;
}
public final void dump(DataOutputStream dos) throws IOException {
super.dump(dos);
writeAnnotations(dos);
}
public Attribute copy(ConstantPool constant_pool) {
throw new RuntimeException("Not implemented yet!");
}
/** Return a list of Annotation[] - each list entry contains the annotations for one parameter */
public List /*Annotation[]*/<AnnotationGen[]> getParameterAnnotations() {
if (!inflated) inflate();
return parameterAnnotations;
}
public AnnotationGen[] getAnnotationsOnParameter(int parameterIndex) {
if (!inflated) inflate();
// This may happen. In a ctor for a non static inner type the compiler
// may have added an extra parameter to the generated ctor (the parameter
// contains the instance of the outer class) - in this case
// it may appear that there are more parameters than there are entries
// in the parameter annotations array
if (parameterIndex>=parameterAnnotations.size()) {
return AnnotationGen.NO_ANNOTATIONS;
}
return parameterAnnotations.get(parameterIndex);
}
public boolean areVisible() {
return visible;
}
protected void readParameterAnnotations(DataInputStream dis,ConstantPool cpool) throws IOException {
annotation_data = new byte[length];
dis.readFully(annotation_data,0,length);
}
private void inflate() {
try {
DataInputStream dis = new DataInputStream(new ByteArrayInputStream(annotation_data));
int numParameters = dis.readUnsignedByte();
if (numParameters > 0) {
List<AnnotationGen[]> inflatedParameterAnnotations = new ArrayList<AnnotationGen[]>();
for (int i=0; i<numParameters; i++) {
int numAnnotations = dis.readUnsignedShort();
if (numAnnotations == 0 ) {
inflatedParameterAnnotations.add(AnnotationGen.NO_ANNOTATIONS);
} else {
AnnotationGen[] annotations = new AnnotationGen[numAnnotations];
for (int j=0; j<numAnnotations; j++) {
annotations[j] = AnnotationGen.read(dis,getConstantPool(),visible);
}
inflatedParameterAnnotations.add(annotations);
}
}
parameterAnnotations = inflatedParameterAnnotations;
}
inflated = true;
} catch (IOException ioe) {
throw new RuntimeException("Unabled to inflate annotation data, badly formed?");
}
}
protected void writeAnnotations(DataOutputStream dos) throws IOException {
if (!inflated) {
dos.write(annotation_data,0,length);
} else {
dos.writeByte(parameterAnnotations.size());
for (int i=0; i<parameterAnnotations.size(); i++) {
AnnotationGen[] annotations = parameterAnnotations.get(i);
dos.writeShort(annotations.length);
for (int j=0; j<annotations.length;j++) {
annotations[j].dump(dos);
}
}
}
}
/** FOR TESTING ONLY: Tells you if the annotations have been inflated to an object graph */
public boolean isInflated() {
return inflated;
}
public String toString() {
return "Runtime"+(visible?"Visible":"Invisible")+"ParameterAnnotations ["+(inflated?"inflated":"not yet inflated")+"]";
}
}
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