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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 Common Public License
* v1.0 which accompanies this distribution and is available at
* http://www.eclipse.org/legal/cpl-v10.html
*
* Contributors: Andy Clement - initial implementation
******************************************************************************/
package org.aspectj.apache.bcel.classfile.tests;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.DataInputStream;
import java.io.DataOutputStream;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
import java.util.Vector;
import org.aspectj.apache.bcel.Constants;
import org.aspectj.apache.bcel.classfile.Utility;
import org.aspectj.apache.bcel.classfile.Attribute;
import org.aspectj.apache.bcel.classfile.annotation.RuntimeVisibleAnnotations;
import org.aspectj.apache.bcel.classfile.annotation.RuntimeInvisibleAnnotations;
import org.aspectj.apache.bcel.classfile.annotation.RuntimeAnnotations;
import org.aspectj.apache.bcel.generic.ClassGen;
import org.aspectj.apache.bcel.generic.ConstantPoolGen;
import org.aspectj.apache.bcel.generic.ObjectType;
import org.aspectj.apache.bcel.generic.annotation.AnnotationGen;
import org.aspectj.apache.bcel.generic.annotation.ElementNameValuePairGen;
import org.aspectj.apache.bcel.generic.annotation.ElementValueGen;
import org.aspectj.apache.bcel.generic.annotation.SimpleElementValueGen;
public class AnnotationGenTest extends BcelTestCase {
protected void setUp() throws Exception {
super.setUp();
}
private ClassGen createClassGen(String classname) {
return new ClassGen(classname, "java.lang.Object",
"<generated>", Constants.ACC_PUBLIC | Constants.ACC_SUPER, null);
}
/**
* Programmatically construct an mutable annotation (AnnotationGen) object.
*/
public void testConstructMutableAnnotation() {
// Create the containing class
ClassGen cg = createClassGen("HelloWorld");
ConstantPoolGen cp = cg.getConstantPool();
// Create the simple primitive value '4' of type 'int'
SimpleElementValueGen evg =
new SimpleElementValueGen(ElementValueGen.PRIMITIVE_INT,cp,4);
// Give it a name, call it 'id'
ElementNameValuePairGen nvGen = new ElementNameValuePairGen("id",evg,cp);
// Check it looks right
assertTrue("Should include string 'id=4' but says: "+nvGen.toString(),
nvGen.toString().indexOf("id=4")!=-1);
ObjectType t = new ObjectType("SimpleAnnotation");
List elements = new ArrayList();
elements.add(nvGen);
// Build an annotation of type 'SimpleAnnotation' with 'id=4' as the only value :)
AnnotationGen a = new AnnotationGen(t,elements,true,cp);
// Check we can save and load it ok
checkSerialize(a,cp);
}
public void testVisibleInvisibleAnnotationGen() {
// Create the containing class
ClassGen cg = createClassGen("HelloWorld");
ConstantPoolGen cp = cg.getConstantPool();
// Create the simple primitive value '4' of type 'int'
SimpleElementValueGen evg =
new SimpleElementValueGen(ElementValueGen.PRIMITIVE_INT,cp,4);
// Give it a name, call it 'id'
ElementNameValuePairGen nvGen = new ElementNameValuePairGen("id",evg,cp);
// Check it looks right
assertTrue("Should include string 'id=4' but says: "+nvGen.toString(),
nvGen.toString().indexOf("id=4")!=-1);
ObjectType t = new ObjectType("SimpleAnnotation");
List elements = new ArrayList();
elements.add(nvGen);
// Build a RV annotation of type 'SimpleAnnotation' with 'id=4' as the only value :)
AnnotationGen a = new AnnotationGen(t,elements,true,cp);
Vector v = new Vector();
v.add(a);
Attribute[] attributes = Utility.getAnnotationAttributes(cp, v);
boolean foundRV = false;
for (int i = 0; i < attributes.length; i++) {
Attribute attribute = attributes[i];
if (attribute instanceof RuntimeVisibleAnnotations) {
assertTrue(((RuntimeAnnotations)attribute).areVisible());
foundRV = true;
}
}
assertTrue("Should have seen a RuntimeVisibleAnnotation", foundRV);
// Build a RIV annotation of type 'SimpleAnnotation' with 'id=4' as the only value :)
AnnotationGen a2 = new AnnotationGen(t,elements,false,cp);
Vector v2 = new Vector();
v2.add(a2);
Attribute[] attributes2 = Utility.getAnnotationAttributes(cp, v2);
boolean foundRIV = false;
for (int i = 0; i < attributes2.length; i++) {
Attribute attribute = attributes2[i];
if (attribute instanceof RuntimeInvisibleAnnotations) {
assertFalse(((RuntimeAnnotations)attribute).areVisible());
foundRIV = true;
}
}
assertTrue("Should have seen a RuntimeInvisibleAnnotation", foundRIV);
}
////
// Helper methods
private void checkSerialize(AnnotationGen a,ConstantPoolGen cpg) {
try {
String beforeName = a.getTypeName();
List beforeValues = a.getValues();
ByteArrayOutputStream baos = new ByteArrayOutputStream();
DataOutputStream dos = new DataOutputStream(baos);
a.dump(dos);
dos.flush();
dos.close();
byte[] bs = baos.toByteArray();
ByteArrayInputStream bais = new ByteArrayInputStream(bs);
DataInputStream dis = new DataInputStream(bais);
AnnotationGen annAfter = AnnotationGen.read(dis,cpg,a.isRuntimeVisible());
dis.close();
String afterName = annAfter.getTypeName();
List afterValues = annAfter.getValues();
if (!beforeName.equals(afterName)) {
fail("Deserialization failed: before type='"+beforeName+"' after type='"+afterName+"'");
}
if (a.getValues().size()!=annAfter.getValues().size()) {
fail("Different numbers of element name value pairs?? "+a.getValues().size()+"!="+annAfter.getValues().size());
}
for (int i=0;i<a.getValues().size();i++) {
ElementNameValuePairGen beforeElement = (ElementNameValuePairGen) a.getValues().get(i);
ElementNameValuePairGen afterElement = (ElementNameValuePairGen) annAfter.getValues().get(i);
if (!beforeElement.getNameString().equals(afterElement.getNameString())) {
fail("Different names?? "+beforeElement.getNameString()+"!="+afterElement.getNameString());
}
}
} catch (IOException ioe) {
fail("Unexpected exception whilst checking serialization: "+ioe);
}
}
protected void tearDown() throws Exception {
super.tearDown();
}
}
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