/* *******************************************************************
* Copyright (c) 2005 Contributors.
* 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://eclipse.org/legal/epl-v10.html
*
* Contributors:
* Adrian Colyer Initial implementation
* ******************************************************************/
package org.aspectj.weaver.reflect;
import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;
import java.lang.reflect.Constructor;
import java.lang.reflect.Field;
import java.lang.reflect.Method;
import java.lang.reflect.Type;
import org.aspectj.lang.annotation.Aspect;
import org.aspectj.lang.reflect.AjType;
import org.aspectj.lang.reflect.AjTypeSystem;
import org.aspectj.lang.reflect.Pointcut;
import org.aspectj.weaver.AnnotationX;
import org.aspectj.weaver.ReferenceType;
import org.aspectj.weaver.ResolvedMember;
import org.aspectj.weaver.ResolvedPointcutDefinition;
import org.aspectj.weaver.ResolvedType;
import org.aspectj.weaver.TypeVariable;
import org.aspectj.weaver.TypeVariableReferenceType;
import org.aspectj.weaver.UnresolvedType;
import org.aspectj.weaver.World;
import org.aspectj.weaver.internal.tools.PointcutExpressionImpl;
import org.aspectj.weaver.tools.PointcutParameter;
import org.aspectj.weaver.tools.PointcutParser;
/**
* @author colyer
* Provides Java 5 behaviour in reflection based delegates (overriding
* 1.4 behaviour from superclass where appropriate)
*/
public class Java15ReflectionBasedReferenceTypeDelegate extends
ReflectionBasedReferenceTypeDelegate {
private AjType<?> myType;
private ResolvedType[] annotations;
private ResolvedMember[] pointcuts;
private ResolvedMember[] methods;
private ResolvedMember[] fields;
private TypeVariable[] typeVariables;
private ResolvedType superclass;
private ResolvedType[] superInterfaces;
private String genericSignature = null;
private JavaLangTypeToResolvedTypeConverter typeConverter;
private Java15AnnotationFinder annotationFinder = null;
public Java15ReflectionBasedReferenceTypeDelegate() {}
@Override
public void initialize(ReferenceType aType, Class aClass, ClassLoader classLoader, World aWorld) {
super.initialize(aType, aClass, classLoader, aWorld);
myType = AjTypeSystem.getAjType(aClass);
annotationFinder = new Java15AnnotationFinder();
annotationFinder.setClassLoader(classLoader);
this.typeConverter = new JavaLangTypeToResolvedTypeConverter(aWorld);
}
public ReferenceType buildGenericType() {
return (ReferenceType) UnresolvedType.forGenericTypeVariables(
getResolvedTypeX().getSignature(),
getTypeVariables()).resolve(getWorld());
}
public AnnotationX[] getAnnotations() {
// AMC - we seem not to need to implement this method...
//throw new UnsupportedOperationException("getAnnotations on Java15ReflectionBasedReferenceTypeDelegate is not implemented yet");
// FIXME is this the right implementation in the reflective case?
return super.getAnnotations();
}
public ResolvedType[] getAnnotationTypes() {
if (annotations == null) {
annotations = annotationFinder.getAnnotations(getBaseClass(), getWorld());
}
return annotations;
}
public boolean hasAnnotation(UnresolvedType ofType) {
ResolvedType[] myAnns = getAnnotationTypes();
ResolvedType toLookFor = ofType.resolve(getWorld());
for (int i = 0; i < myAnns.length; i++) {
if (myAnns[i] == toLookFor) return true;
}
return false;
}
// use the MAP to ensure that any aj-synthetic fields are filtered out
public ResolvedMember[] getDeclaredFields() {
if (fields == null) {
Field[] reflectFields = this.myType.getDeclaredFields();
this.fields = new ResolvedMember[reflectFields.length];
for (int i = 0; i < reflectFields.length; i++) {
this.fields[i] = createGenericFieldMember(reflectFields[i]);
}
}
return fields;
}
public String getDeclaredGenericSignature() {
if (this.genericSignature == null && isGeneric()) {
}
return genericSignature;
}
public ResolvedType[] getDeclaredInterfaces() {
if (superInterfaces == null) {
Type[] genericInterfaces = getBaseClass().getGenericInterfaces();
this.superInterfaces = typeConverter.fromTypes(genericInterfaces);
}
return superInterfaces;
}
// If the superclass is null, return Object - same as bcel does
public ResolvedType getSuperclass() {
if (superclass == null && getBaseClass()!=Object.class) {// superclass of Object is null
Type t = this.getBaseClass().getGenericSuperclass();
if (t!=null) superclass = typeConverter.fromType(t);
if (t==null) superclass = getWorld().resolve(UnresolvedType.OBJECT);
}
return superclass;
}
public TypeVariable[] getTypeVariables() {
TypeVariable[] workInProgressSetOfVariables = (TypeVariable[])getResolvedTypeX().getWorld().getTypeVariablesCurrentlyBeingProcessed(getBaseClass());
if (workInProgressSetOfVariables!=null) {
return workInProgressSetOfVariables;
}
if (this.typeVariables == null) {
java.lang.reflect.TypeVariable[] tVars = this.getBaseClass().getTypeParameters();
this.typeVariables = new TypeVariable[tVars.length];
// basic initialization
for (int i = 0; i < tVars.length; i++) {
typeVariables[i] = new TypeVariable(tVars[i].getName());
}
// stash it
this.getResolvedTypeX().getWorld().recordTypeVariablesCurrentlyBeingProcessed(getBaseClass(),typeVariables);
// now fill in the details...
for (int i = 0; i < tVars.length; i++) {
TypeVariableReferenceType tvrt = ((TypeVariableReferenceType) typeConverter.fromType(tVars[i]));
TypeVariable tv = tvrt.getTypeVariable();
typeVariables[i].setUpperBound(tv.getUpperBound());
typeVariables[i].setAdditionalInterfaceBounds(tv.getAdditionalInterfaceBounds());
typeVariables[i].setDeclaringElement(tv.getDeclaringElement());
typeVariables[i].setDeclaringElementKind(tv.getDeclaringElementKind());
typeVariables[i].setRank(tv.getRank());
typeVariables[i].setLowerBound(tv.getLowerBound());
}
this.getResolvedTypeX().getWorld().forgetTypeVariablesCurrentlyBeingProcessed(getBaseClass());
}
return this.typeVariables;
}
// overrides super method since by using the MAP we can filter out advice
// methods that really shouldn't be seen in this list
public ResolvedMember[] getDeclaredMethods() {
if (methods == null) {
Method[] reflectMethods = this.myType.getDeclaredMethods();
Constructor[] reflectCons = this.myType.getDeclaredConstructors();
this.methods = new ResolvedMember[reflectMethods.length + reflectCons.length];
for (int i = 0; i < reflectMethods.length; i++) {
this.methods[i] = createGenericMethodMember(reflectMethods[i]);
}
for (int i = 0; i < reflectCons.length; i++) {
this.methods[i + reflectMethods.length] =
createGenericConstructorMember(reflectCons[i]);
}
}
return methods;
}
/**
* Returns the generic type, regardless of the resolvedType we 'know about'
*/
public ResolvedType getGenericResolvedType() {
ResolvedType rt = getResolvedTypeX();
if (rt.isParameterizedType() || rt.isRawType()) return rt.getGenericType();
return rt;
}
private ResolvedMember createGenericMethodMember(Method forMethod) {
ReflectionBasedResolvedMemberImpl ret =
new ReflectionBasedResolvedMemberImpl(org.aspectj.weaver.Member.METHOD,
getGenericResolvedType(),
forMethod.getModifiers(),
typeConverter.fromType(forMethod.getReturnType()),
forMethod.getName(),
typeConverter.fromTypes(forMethod.getParameterTypes()),
typeConverter.fromTypes(forMethod.getExceptionTypes()),
forMethod
);
ret.setAnnotationFinder(this.annotationFinder);
ret.setGenericSignatureInformationProvider(new Java15GenericSignatureInformationProvider(this.getWorld()));
return ret;
}
private ResolvedMember createGenericConstructorMember(Constructor forConstructor) {
ReflectionBasedResolvedMemberImpl ret =
new ReflectionBasedResolvedMemberImpl(org.aspectj.weaver.Member.METHOD,
getGenericResolvedType(),
forConstructor.getModifiers(),
// to return what BCEL returns the return type is void
ResolvedType.VOID,//getGenericResolvedType(),
"<init>",
typeConverter.fromTypes(forConstructor.getParameterTypes()),
typeConverter.fromTypes(forConstructor.getExceptionTypes()),
forConstructor
);
ret.setAnnotationFinder(this.annotationFinder);
ret.setGenericSignatureInformationProvider(new Java15GenericSignatureInformationProvider(this.getWorld()));
return ret;
}
private ResolvedMember createGenericFieldMember(Field forField) {
ReflectionBasedResolvedMemberImpl ret =
new ReflectionBasedResolvedMemberImpl(
org.aspectj.weaver.Member.FIELD,
getGenericResolvedType(),
forField.getModifiers(),
typeConverter.fromType(forField.getType()),
forField.getName(),
new UnresolvedType[0],
forField);
ret.setAnnotationFinder(this.annotationFinder);
ret.setGenericSignatureInformationProvider(new Java15GenericSignatureInformationProvider(this.getWorld()));
return ret;
}
public ResolvedMember[] getDeclaredPointcuts() {
if (pointcuts == null) {
Pointcut[] pcs = this.myType.getDeclaredPointcuts();
pointcuts = new ResolvedMember[pcs.length];
PointcutParser parser = PointcutParser.getPointcutParserSupportingAllPrimitivesAndUsingSpecifiedClassloaderForResolution(classLoader);
for (int i = 0; i < pcs.length; i++) {
AjType<?>[] ptypes = pcs[i].getParameterTypes();
String[] pnames = pcs[i].getParameterNames();
if (pnames.length != ptypes.length) {
throw new IllegalStateException("Required parameter names not available when parsing pointcut " + pcs[i].getName() + " in type " + getResolvedTypeX().getName());
}
PointcutParameter[] parameters = new PointcutParameter[ptypes.length];
for (int j = 0; j < parameters.length; j++) {
parameters[j] = parser.createPointcutParameter(pnames[j],ptypes[j].getJavaClass());
}
String pcExpr = pcs[i].getPointcutExpression().toString();
PointcutExpressionImpl pEx = (PointcutExpressionImpl) parser.parsePointcutExpression(pcExpr,getBaseClass(),parameters);
org.aspectj.weaver.patterns.Pointcut pc = pEx.getUnderlyingPointcut();
UnresolvedType[] weaverPTypes = new UnresolvedType[ptypes.length];
for (int j = 0; j < weaverPTypes.length; j++) {
weaverPTypes[j] = UnresolvedType.forName(ptypes[j].getName());
}
pointcuts[i] = new ResolvedPointcutDefinition(getResolvedTypeX(),pcs[i].getModifiers(),pcs[i].getName(),weaverPTypes,pc);
}
}
return pointcuts;
}
public boolean isAnnotation() {
return getBaseClass().isAnnotation();
}
public boolean isAnnotationStyleAspect() {
return getBaseClass().isAnnotationPresent(Aspect.class);
}
public boolean isAnnotationWithRuntimeRetention() {
if (!isAnnotation()) return false;
if (getBaseClass().isAnnotationPresent(Retention.class)) {
Retention retention = (Retention) getBaseClass().getAnnotation(Retention.class);
RetentionPolicy policy = retention.value();
return policy == RetentionPolicy.RUNTIME;
} else {
return false;
}
}
public boolean isAspect() {
return this.myType.isAspect();
}
public boolean isEnum() {
return getBaseClass().isEnum();
}
public boolean isGeneric() {
//return false; // for now
return getBaseClass().getTypeParameters().length > 0;
}
@Override
public boolean isAnonymous() {
return this.myClass.isAnonymousClass();
}
}