AnnotationGenTest.java
/*******************************************************************************
* Copyright (c) 2004 IBM All rights reserved. This program and the accompanying
* materials are made available under the terms of the Eclipse Public License v 2.0
* which accompanies this distribution and is available at
* https://www.eclipse.org/org/documents/epl-2.0/EPL-2.0.txt
*
* 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.Collection;
import java.util.List;
import java.util.Vector;
import org.aspectj.apache.bcel.Constants;
import org.aspectj.apache.bcel.classfile.Attribute;
import org.aspectj.apache.bcel.classfile.ConstantPool;
import org.aspectj.apache.bcel.classfile.Utility;
import org.aspectj.apache.bcel.classfile.annotation.AnnotationGen;
import org.aspectj.apache.bcel.classfile.annotation.ElementValue;
import org.aspectj.apache.bcel.classfile.annotation.NameValuePair;
import org.aspectj.apache.bcel.classfile.annotation.RuntimeAnnos;
import org.aspectj.apache.bcel.classfile.annotation.RuntimeInvisAnnos;
import org.aspectj.apache.bcel.classfile.annotation.RuntimeVisAnnos;
import org.aspectj.apache.bcel.classfile.annotation.SimpleElementValue;
import org.aspectj.apache.bcel.generic.ClassGen;
import org.aspectj.apache.bcel.generic.ObjectType;
public class AnnotationGenTest extends BcelTestCase {
@Override
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");
ConstantPool cp = cg.getConstantPool();
// Create the simple primitive value '4' of type 'int'
SimpleElementValue evg = new SimpleElementValue(ElementValue.PRIMITIVE_INT, cp, 4);
// Give it a name, call it 'id'
NameValuePair nvGen = new NameValuePair("id", evg, cp);
// Check it looks right
assertTrue("Should include string 'id=4' but says: " + nvGen.toString(), nvGen.toString().contains("id=4"));
ObjectType t = new ObjectType("SimpleAnnotation");
List<NameValuePair> 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");
ConstantPool cp = cg.getConstantPool();
// Create the simple primitive value '4' of type 'int'
SimpleElementValue evg = new SimpleElementValue(ElementValue.PRIMITIVE_INT, cp, 4);
// Give it a name, call it 'id'
NameValuePair nvGen = new NameValuePair("id", evg, cp);
// Check it looks right
assertTrue("Should include string 'id=4' but says: " + nvGen.toString(), nvGen.toString().contains("id=4"));
ObjectType t = new ObjectType("SimpleAnnotation");
List<NameValuePair> 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);
List<AnnotationGen> v = new Vector<>();
v.add(a);
Collection<RuntimeAnnos> attributes = Utility.getAnnotationAttributes(cp, v);
boolean foundRV = false;
for (Attribute attribute : attributes) {
if (attribute instanceof RuntimeVisAnnos) {
assertTrue(((RuntimeAnnos) 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);
List<AnnotationGen> v2 = new Vector<>();
v2.add(a2);
Collection<RuntimeAnnos> attributes2 = Utility.getAnnotationAttributes(cp, v2);
boolean foundRIV = false;
for (Attribute attribute : attributes2) {
// for (int i = 0; i < attributes2.length; i++) {
// Attribute attribute = attributes2[i];
if (attribute instanceof RuntimeInvisAnnos) {
assertFalse(((RuntimeAnnos) attribute).areVisible());
foundRIV = true;
}
}
assertTrue("Should have seen a RuntimeInvisibleAnnotation", foundRIV);
}
// //
// Helper methods
private void checkSerialize(AnnotationGen a, ConstantPool cpg) {
try {
String beforeName = a.getTypeName();
List<NameValuePair> 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<NameValuePair> 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++) {
NameValuePair beforeElement = a.getValues().get(i);
NameValuePair afterElement = 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);
}
}
@Override
protected void tearDown() throws Exception {
super.tearDown();
}
}