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/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.commons.bcel6.generic;
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 org.apache.commons.bcel6.AbstractTestCase;
import org.apache.commons.bcel6.Const;
import org.apache.commons.bcel6.classfile.Annotations;
import org.apache.commons.bcel6.classfile.Attribute;
import org.apache.commons.bcel6.classfile.RuntimeInvisibleAnnotations;
import org.apache.commons.bcel6.classfile.RuntimeVisibleAnnotations;
public class AnnotationGenTestCase extends AbstractTestCase
{
private ClassGen createClassGen(final String classname)
{
return new ClassGen(classname, "java.lang.Object", "<generated>",
Const.ACC_PUBLIC | Const.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'
ElementValuePairGen nvGen = new ElementValuePairGen("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<ElementValuePairGen> elements = new ArrayList<>();
elements.add(nvGen);
// Build an annotation of type 'SimpleAnnotation' with 'id=4' as the
// only value :)
AnnotationEntryGen a = new AnnotationEntryGen(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'
ElementValuePairGen nvGen = new ElementValuePairGen("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<ElementValuePairGen> elements = new ArrayList<>();
elements.add(nvGen);
// Build a RV annotation of type 'SimpleAnnotation' with 'id=4' as the
// only value :)
AnnotationEntryGen a = new AnnotationEntryGen(t, elements, true, cp);
List<AnnotationEntryGen> v = new ArrayList<>();
v.add(a);
Attribute[] attributes = AnnotationEntryGen.getAnnotationAttributes(cp, v.toArray(new AnnotationEntryGen[0]));
boolean foundRV = false;
for (Attribute attribute : attributes) {
if (attribute instanceof RuntimeVisibleAnnotations)
{
assertTrue(((Annotations) attribute).isRuntimeVisible());
foundRV = true;
}
}
assertTrue("Should have seen a RuntimeVisibleAnnotation", foundRV);
// Build a RIV annotation of type 'SimpleAnnotation' with 'id=4' as the
// only value :)
AnnotationEntryGen a2 = new AnnotationEntryGen(t, elements, false, cp);
List<AnnotationEntryGen> v2 = new ArrayList<>();
v2.add(a2);
Attribute[] attributes2 = AnnotationEntryGen.getAnnotationAttributes(cp, v2.toArray(new AnnotationEntryGen[0]));
boolean foundRIV = false;
for (Attribute attribute : attributes2) {
if (attribute instanceof RuntimeInvisibleAnnotations)
{
assertFalse(((Annotations) attribute).isRuntimeVisible());
foundRIV = true;
}
}
assertTrue("Should have seen a RuntimeInvisibleAnnotation", foundRIV);
}
private void checkSerialize(final AnnotationEntryGen a, final ConstantPoolGen cpg)
{
try
{
String beforeName = a.getTypeName();
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);
AnnotationEntryGen annAfter = AnnotationEntryGen.read(dis, cpg, a
.isRuntimeVisible());
dis.close();
String afterName = annAfter.getTypeName();
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++)
{
ElementValuePairGen beforeElement = a.getValues().get(i);
ElementValuePairGen 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);
}
}
}
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