/* *******************************************************************
* Copyright (c) 2002 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://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* PARC initial implementation
* RonBodkin/AndyClement optimizations for memory consumption/speed
* ******************************************************************/
package org.aspectj.weaver.bcel;
import java.io.PrintStream;
import java.lang.ref.WeakReference;
import java.lang.reflect.Modifier;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collection;
import java.util.Collections;
import java.util.Iterator;
import java.util.List;
import java.util.Set;
import org.aspectj.apache.bcel.classfile.Attribute;
import org.aspectj.apache.bcel.classfile.AttributeUtils;
import org.aspectj.apache.bcel.classfile.ConstantClass;
import org.aspectj.apache.bcel.classfile.ConstantPool;
import org.aspectj.apache.bcel.classfile.EnclosingMethod;
import org.aspectj.apache.bcel.classfile.Field;
import org.aspectj.apache.bcel.classfile.InnerClass;
import org.aspectj.apache.bcel.classfile.InnerClasses;
import org.aspectj.apache.bcel.classfile.JavaClass;
import org.aspectj.apache.bcel.classfile.Method;
import org.aspectj.apache.bcel.classfile.Signature;
import org.aspectj.apache.bcel.classfile.annotation.AnnotationGen;
import org.aspectj.apache.bcel.classfile.annotation.EnumElementValue;
import org.aspectj.apache.bcel.classfile.annotation.NameValuePair;
import org.aspectj.asm.AsmManager;
import org.aspectj.bridge.IMessageHandler;
import org.aspectj.bridge.MessageUtil;
import org.aspectj.util.GenericSignature;
import org.aspectj.util.GenericSignature.FormalTypeParameter;
import org.aspectj.weaver.AbstractReferenceTypeDelegate;
import org.aspectj.weaver.AjAttribute;
import org.aspectj.weaver.AjcMemberMaker;
import org.aspectj.weaver.AnnotationAJ;
import org.aspectj.weaver.AnnotationTargetKind;
import org.aspectj.weaver.BCException;
import org.aspectj.weaver.BindingScope;
import org.aspectj.weaver.ConcreteTypeMunger;
import org.aspectj.weaver.ISourceContext;
import org.aspectj.weaver.ReferenceType;
import org.aspectj.weaver.ResolvedMember;
import org.aspectj.weaver.ResolvedPointcutDefinition;
import org.aspectj.weaver.ResolvedType;
import org.aspectj.weaver.SourceContextImpl;
import org.aspectj.weaver.TypeVariable;
import org.aspectj.weaver.UnresolvedType;
import org.aspectj.weaver.WeaverStateInfo;
import org.aspectj.weaver.World;
import org.aspectj.weaver.bcel.BcelGenericSignatureToTypeXConverter.GenericSignatureFormatException;
import org.aspectj.weaver.patterns.Declare;
import org.aspectj.weaver.patterns.DeclareErrorOrWarning;
import org.aspectj.weaver.patterns.DeclarePrecedence;
import org.aspectj.weaver.patterns.FormalBinding;
import org.aspectj.weaver.patterns.IScope;
import org.aspectj.weaver.patterns.PerClause;
public class BcelObjectType extends AbstractReferenceTypeDelegate {
public JavaClass javaClass;
private boolean artificial; // Was the BcelObject built from an artificial set of bytes? Or from the real ondisk stuff?
private LazyClassGen lazyClassGen = null; // set lazily if it's an aspect
private int modifiers;
private String className;
private String superclassSignature;
private String superclassName;
private String[] interfaceSignatures;
private ResolvedMember[] fields = null;
private ResolvedMember[] methods = null;
private ResolvedType[] annotationTypes = null;
private AnnotationAJ[] annotations = null;
private TypeVariable[] typeVars = null;
private String retentionPolicy;
private AnnotationTargetKind[] annotationTargetKinds;
// Aspect related stuff (pointcuts *could* be in a java class)
private AjAttribute.WeaverVersionInfo wvInfo = AjAttribute.WeaverVersionInfo.UNKNOWN;
private ResolvedPointcutDefinition[] pointcuts = null;
private ResolvedMember[] privilegedAccess = null;
private WeaverStateInfo weaverState = null;
private PerClause perClause = null;
private List<ConcreteTypeMunger> typeMungers = Collections.emptyList();
private List<Declare> declares = Collections.emptyList();
private GenericSignature.FormalTypeParameter[] formalsForResolution = null;
private String declaredSignature = null;
private boolean hasBeenWoven = false;
private boolean isGenericType = false;
private boolean isInterface;
private boolean isEnum;
private boolean isAnnotation;
private boolean isAnonymous;
private boolean isNested;
private boolean isObject = false; // set upon construction
private boolean isAnnotationStyleAspect = false;// set upon construction
private boolean isCodeStyleAspect = false; // not redundant with field
// above!
private WeakReference<ResolvedType> superTypeReference = new WeakReference<ResolvedType>(null);
private WeakReference<ResolvedType[]> superInterfaceReferences = new WeakReference<ResolvedType[]>(null);
private int bitflag = 0x0000;
// discovery bits
private static final int DISCOVERED_ANNOTATION_RETENTION_POLICY = 0x0001;
private static final int UNPACKED_GENERIC_SIGNATURE = 0x0002;
private static final int UNPACKED_AJATTRIBUTES = 0x0004; // see note(1)
// below
private static final int DISCOVERED_ANNOTATION_TARGET_KINDS = 0x0008;
private static final int DISCOVERED_DECLARED_SIGNATURE = 0x0010;
private static final int DISCOVERED_WHETHER_ANNOTATION_STYLE = 0x0020;
private static final int ANNOTATION_UNPACK_IN_PROGRESS = 0x0100;
private static final String[] NO_INTERFACE_SIGS = new String[] {};
/*
* Notes: note(1): in some cases (perclause inheritance) we encounter unpacked state when calling getPerClause
*
* note(2): A BcelObjectType is 'damaged' if it has been modified from what was original constructed from the bytecode. This
* currently happens if the parents are modified or an annotation is added - ideally BcelObjectType should be immutable but
* that's a bigger piece of work. XXX
*/
BcelObjectType(ReferenceType resolvedTypeX, JavaClass javaClass, boolean artificial, boolean exposedToWeaver) {
super(resolvedTypeX, exposedToWeaver);
this.javaClass = javaClass;
this.artificial = artificial;
initializeFromJavaclass();
// ATAJ: set the delegate right now for @AJ pointcut, else it is done
// too late to lookup
// @AJ pc refs annotation in class hierarchy
resolvedTypeX.setDelegate(this);
ISourceContext sourceContext = resolvedTypeX.getSourceContext();
if (sourceContext == SourceContextImpl.UNKNOWN_SOURCE_CONTEXT) {
sourceContext = new SourceContextImpl(this);
setSourceContext(sourceContext);
}
// this should only ever be java.lang.Object which is
// the only class in Java-1.4 with no superclasses
isObject = (javaClass.getSuperclassNameIndex() == 0);
ensureAspectJAttributesUnpacked();
// if (sourceContext instanceof SourceContextImpl) {
// ((SourceContextImpl)sourceContext).setSourceFileName(javaClass.
// getSourceFileName());
// }
setSourcefilename(javaClass.getSourceFileName());
}
// repeat initialization
public void setJavaClass(JavaClass newclass, boolean artificial) {
this.javaClass = newclass;
this.artificial = artificial;
resetState();
initializeFromJavaclass();
}
@Override
public boolean isCacheable() {
return true;
}
private void initializeFromJavaclass() {
isInterface = javaClass.isInterface();
isEnum = javaClass.isEnum();
isAnnotation = javaClass.isAnnotation();
isAnonymous = javaClass.isAnonymous();
isNested = javaClass.isNested();
modifiers = javaClass.getModifiers();
superclassName = javaClass.getSuperclassName();
className = javaClass.getClassName();
cachedGenericClassTypeSignature = null;
}
// --- getters
// Java related
public boolean isInterface() {
return isInterface;
}
public boolean isEnum() {
return isEnum;
}
public boolean isAnnotation() {
return isAnnotation;
}
public boolean isAnonymous() {
return isAnonymous;
}
public boolean isNested() {
return isNested;
}
public int getModifiers() {
return modifiers;
}
/**
* Must take into account generic signature
*/
public ResolvedType getSuperclass() {
if (isObject) {
return null;
}
ResolvedType supertype = superTypeReference.get();
if (supertype == null) {
ensureGenericSignatureUnpacked();
if (superclassSignature == null) {
if (superclassName == null) {
superclassName = javaClass.getSuperclassName();
}
superclassSignature = getResolvedTypeX().getWorld().resolve(UnresolvedType.forName(superclassName)).getSignature();
}
World world = getResolvedTypeX().getWorld();
supertype = world.resolve(UnresolvedType.forSignature(superclassSignature));
superTypeReference = new WeakReference<ResolvedType>(supertype);
}
return supertype;
}
public World getWorld() {
return getResolvedTypeX().getWorld();
}
/**
* Retrieves the declared interfaces - this allows for the generic signature on a type. If specified then the generic signature
* is used to work out the types - this gets around the results of erasure when the class was originally compiled.
*/
public ResolvedType[] getDeclaredInterfaces() {
ResolvedType[] cachedInterfaceTypes = superInterfaceReferences.get();
if (cachedInterfaceTypes == null) {
ensureGenericSignatureUnpacked();
ResolvedType[] interfaceTypes = null;
if (interfaceSignatures == null) {
String[] names = javaClass.getInterfaceNames();
if (names.length == 0) {
interfaceSignatures = NO_INTERFACE_SIGS;
interfaceTypes = ResolvedType.NONE;
} else {
interfaceSignatures = new String[names.length];
interfaceTypes = new ResolvedType[names.length];
for (int i = 0, len = names.length; i < len; i++) {
interfaceTypes[i] = getResolvedTypeX().getWorld().resolve(UnresolvedType.forName(names[i]));
interfaceSignatures[i] = interfaceTypes[i].getSignature();
}
}
} else {
interfaceTypes = new ResolvedType[interfaceSignatures.length];
for (int i = 0, len = interfaceSignatures.length; i < len; i++) {
interfaceTypes[i] = getResolvedTypeX().getWorld().resolve(UnresolvedType.forSignature(interfaceSignatures[i]));
}
}
superInterfaceReferences = new WeakReference<ResolvedType[]>(interfaceTypes);
return interfaceTypes;
} else {
return cachedInterfaceTypes;
}
}
public ResolvedMember[] getDeclaredMethods() {
ensureGenericSignatureUnpacked();
if (methods == null) {
Method[] ms = javaClass.getMethods();
methods = new ResolvedMember[ms.length];
for (int i = ms.length - 1; i >= 0; i--) {
methods[i] = new BcelMethod(this, ms[i]);
}
}
return methods;
}
public ResolvedMember[] getDeclaredFields() {
ensureGenericSignatureUnpacked();
if (fields == null) {
Field[] fs = javaClass.getFields();
fields = new ResolvedMember[fs.length];
for (int i = 0, len = fs.length; i < len; i++) {
fields[i] = new BcelField(this, fs[i]);
}
}
return fields;
}
public TypeVariable[] getTypeVariables() {
if (!isGeneric()) {
return TypeVariable.NONE;
}
if (typeVars == null) {
GenericSignature.ClassSignature classSig = getGenericClassTypeSignature();
typeVars = new TypeVariable[classSig.formalTypeParameters.length];
for (int i = 0; i < typeVars.length; i++) {
GenericSignature.FormalTypeParameter ftp = classSig.formalTypeParameters[i];
try {
typeVars[i] = BcelGenericSignatureToTypeXConverter.formalTypeParameter2TypeVariable(ftp,
classSig.formalTypeParameters, getResolvedTypeX().getWorld());
} catch (GenericSignatureFormatException e) {
// this is a development bug, so fail fast with good info
throw new IllegalStateException("While getting the type variables for type " + this.toString()
+ " with generic signature " + classSig + " the following error condition was detected: "
+ e.getMessage());
}
}
}
return typeVars;
}
public Collection<ConcreteTypeMunger> getTypeMungers() {
return typeMungers;
}
public Collection<Declare> getDeclares() {
return declares;
}
public Collection<ResolvedMember> getPrivilegedAccesses() {
if (privilegedAccess == null) {
return Collections.emptyList();
}
return Arrays.asList(privilegedAccess);
}
public ResolvedMember[] getDeclaredPointcuts() {
return pointcuts;
}
public boolean isAspect() {
return perClause != null;
}
/**
* Check if the type is an @AJ aspect (no matter if used from an LTW point of view). Such aspects are annotated with @Aspect
*
* @return true for @AJ aspect
*/
public boolean isAnnotationStyleAspect() {
if ((bitflag & DISCOVERED_WHETHER_ANNOTATION_STYLE) == 0) {
bitflag |= DISCOVERED_WHETHER_ANNOTATION_STYLE;
isAnnotationStyleAspect = !isCodeStyleAspect && hasAnnotation(AjcMemberMaker.ASPECT_ANNOTATION);
}
return isAnnotationStyleAspect;
}
/**
* Process any org.aspectj.weaver attributes stored against the class.
*/
private void ensureAspectJAttributesUnpacked() {
if ((bitflag & UNPACKED_AJATTRIBUTES) != 0) {
return;
}
bitflag |= UNPACKED_AJATTRIBUTES;
IMessageHandler msgHandler = getResolvedTypeX().getWorld().getMessageHandler();
// Pass in empty list that can store things for readAj5 to process
List<AjAttribute> l = null;
try {
l = Utility.readAjAttributes(className, javaClass.getAttributes(), getResolvedTypeX().getSourceContext(),
getResolvedTypeX().getWorld(), AjAttribute.WeaverVersionInfo.UNKNOWN,
new BcelConstantPoolReader(javaClass.getConstantPool()));
} catch (RuntimeException re) {
throw new RuntimeException("Problem processing attributes in " + javaClass.getFileName(), re);
}
List<ResolvedPointcutDefinition> pointcuts = new ArrayList<ResolvedPointcutDefinition>();
typeMungers = new ArrayList<ConcreteTypeMunger>();
declares = new ArrayList<Declare>();
processAttributes(l, pointcuts, false);
ReferenceType type = getResolvedTypeX();
AsmManager asmManager = ((BcelWorld) type.getWorld()).getModelAsAsmManager();
l = AtAjAttributes.readAj5ClassAttributes(asmManager, javaClass, type, type.getSourceContext(), msgHandler,
isCodeStyleAspect);
AjAttribute.Aspect deferredAspectAttribute = processAttributes(l, pointcuts, true);
if (pointcuts.size() == 0) {
this.pointcuts = ResolvedPointcutDefinition.NO_POINTCUTS;
} else {
this.pointcuts = pointcuts.toArray(new ResolvedPointcutDefinition[pointcuts.size()]);
}
resolveAnnotationDeclares(l);
if (deferredAspectAttribute != null) {
// we can finally process the aspect and its associated perclause...
perClause = deferredAspectAttribute.reifyFromAtAspectJ(this.getResolvedTypeX());
}
if (isAspect() && !Modifier.isAbstract(getModifiers()) && isGeneric()) {
msgHandler.handleMessage(MessageUtil.error("The generic aspect '" + getResolvedTypeX().getName()
+ "' must be declared abstract", getResolvedTypeX().getSourceLocation()));
}
}
private AjAttribute.Aspect processAttributes(List<AjAttribute> attributeList, List<ResolvedPointcutDefinition> pointcuts,
boolean fromAnnotations) {
AjAttribute.Aspect deferredAspectAttribute = null;
for (AjAttribute a : attributeList) {
if (a instanceof AjAttribute.Aspect) {
if (fromAnnotations) {
deferredAspectAttribute = (AjAttribute.Aspect) a;
} else {
perClause = ((AjAttribute.Aspect) a).reify(this.getResolvedTypeX());
isCodeStyleAspect = true;
}
} else if (a instanceof AjAttribute.PointcutDeclarationAttribute) {
pointcuts.add(((AjAttribute.PointcutDeclarationAttribute) a).reify());
} else if (a instanceof AjAttribute.WeaverState) {
weaverState = ((AjAttribute.WeaverState) a).reify();
} else if (a instanceof AjAttribute.TypeMunger) {
typeMungers.add(((AjAttribute.TypeMunger) a).reify(getResolvedTypeX().getWorld(), getResolvedTypeX()));
} else if (a instanceof AjAttribute.DeclareAttribute) {
declares.add(((AjAttribute.DeclareAttribute) a).getDeclare());
} else if (a instanceof AjAttribute.PrivilegedAttribute) {
AjAttribute.PrivilegedAttribute privAttribute = (AjAttribute.PrivilegedAttribute) a;
privilegedAccess = privAttribute.getAccessedMembers();
} else if (a instanceof AjAttribute.SourceContextAttribute) {
if (getResolvedTypeX().getSourceContext() instanceof SourceContextImpl) {
AjAttribute.SourceContextAttribute sca = (AjAttribute.SourceContextAttribute) a;
((SourceContextImpl) getResolvedTypeX().getSourceContext()).configureFromAttribute(sca.getSourceFileName(),
sca.getLineBreaks());
setSourcefilename(sca.getSourceFileName());
}
} else if (a instanceof AjAttribute.WeaverVersionInfo) {
// Set the weaver version used to build this type
wvInfo = (AjAttribute.WeaverVersionInfo) a;
} else {
throw new BCException("bad attribute " + a);
}
}
return deferredAspectAttribute;
}
/**
* Extra processing step needed because declares that come from annotations are not pre-resolved. We can't do the resolution
* until *after* the pointcuts have been resolved.
*/
private void resolveAnnotationDeclares(List<AjAttribute> attributeList) {
FormalBinding[] bindings = new org.aspectj.weaver.patterns.FormalBinding[0];
IScope bindingScope = new BindingScope(getResolvedTypeX(), getResolvedTypeX().getSourceContext(), bindings);
for (Iterator<AjAttribute> iter = attributeList.iterator(); iter.hasNext();) {
AjAttribute a = iter.next();
if (a instanceof AjAttribute.DeclareAttribute) {
Declare decl = (((AjAttribute.DeclareAttribute) a).getDeclare());
if (decl instanceof DeclareErrorOrWarning) {
decl.resolve(bindingScope);
} else if (decl instanceof DeclarePrecedence) {
((DeclarePrecedence) decl).setScopeForResolution(bindingScope);
}
}
}
}
public PerClause getPerClause() {
ensureAspectJAttributesUnpacked();
return perClause;
}
public JavaClass getJavaClass() {
return javaClass;
}
public boolean isArtificial() {
return artificial;
}
public void resetState() {
if (javaClass == null) {
// we might store the classname and allow reloading?
// At this point we are relying on the world to not evict if it
// might want to reweave multiple times
throw new BCException("can't weave evicted type");
}
bitflag = 0x0000;
this.annotationTypes = null;
this.annotations = null;
this.interfaceSignatures = null;
this.superclassSignature = null;
this.superclassName = null;
this.fields = null;
this.methods = null;
this.pointcuts = null;
this.perClause = null;
this.weaverState = null;
this.lazyClassGen = null;
hasBeenWoven = false;
isObject = (javaClass.getSuperclassNameIndex() == 0);
isAnnotationStyleAspect = false;
ensureAspectJAttributesUnpacked();
}
public void finishedWith() {
// memory usage experiments....
// this.interfaces = null;
// this.superClass = null;
// this.fields = null;
// this.methods = null;
// this.pointcuts = null;
// this.perClause = null;
// this.weaverState = null;
// this.lazyClassGen = null;
// this next line frees up memory, but need to understand incremental
// implications
// before leaving it in.
// getResolvedTypeX().setSourceContext(null);
}
public WeaverStateInfo getWeaverState() {
return weaverState;
}
void setWeaverState(WeaverStateInfo weaverState) {
this.weaverState = weaverState;
}
public void printWackyStuff(PrintStream out) {
if (typeMungers.size() > 0) {
out.println(" TypeMungers: " + typeMungers);
}
if (declares.size() > 0) {
out.println(" declares: " + declares);
}
}
/**
* Return the lazyClassGen associated with this type. For aspect types, this value will be cached, since it is used to inline
* advice. For non-aspect types, this lazyClassGen is always newly constructed.
*/
public LazyClassGen getLazyClassGen() {
LazyClassGen ret = lazyClassGen;
if (ret == null) {
// System.err.println("creating lazy class gen for: " + this);
ret = new LazyClassGen(this);
// ret.print(System.err);
// System.err.println("made LCG from : " +
// this.getJavaClass().getSuperclassName );
if (isAspect()) {
lazyClassGen = ret;
}
}
return ret;
}
public boolean isSynthetic() {
return getResolvedTypeX().isSynthetic();
}
public AjAttribute.WeaverVersionInfo getWeaverVersionAttribute() {
return wvInfo;
}
// -- annotation related
public ResolvedType[] getAnnotationTypes() {
ensureAnnotationsUnpacked();
return annotationTypes;
}
public AnnotationAJ[] getAnnotations() {
ensureAnnotationsUnpacked();
return annotations;
}
public boolean hasAnnotation(UnresolvedType ofType) {
// Due to re-entrancy we may be in the middle of unpacking the annotations already... in which case use this slow
// alternative until the stack unwinds itself
if (isUnpackingAnnotations()) {
AnnotationGen annos[] = javaClass.getAnnotations();
if (annos == null || annos.length == 0) {
return false;
} else {
String lookingForSignature = ofType.getSignature();
for (int a = 0; a < annos.length; a++) {
AnnotationGen annotation = annos[a];
if (lookingForSignature.equals(annotation.getTypeSignature())) {
return true;
}
}
}
return false;
}
ensureAnnotationsUnpacked();
for (int i = 0, max = annotationTypes.length; i < max; i++) {
UnresolvedType ax = annotationTypes[i];
if (ax == null) {
throw new RuntimeException("Annotation entry " + i + " on type " + this.getResolvedTypeX().getName() + " is null!");
}
if (ax.equals(ofType)) {
return true;
}
}
return false;
}
public boolean isAnnotationWithRuntimeRetention() {
return (getRetentionPolicy() == null ? false : getRetentionPolicy().equals("RUNTIME"));
}
public String getRetentionPolicy() {
if ((bitflag & DISCOVERED_ANNOTATION_RETENTION_POLICY) == 0) {
bitflag |= DISCOVERED_ANNOTATION_RETENTION_POLICY;
retentionPolicy = null; // null means we have no idea
if (isAnnotation()) {
ensureAnnotationsUnpacked();
for (int i = annotations.length - 1; i >= 0; i--) {
AnnotationAJ ax = annotations[i];
if (ax.getTypeName().equals(UnresolvedType.AT_RETENTION.getName())) {
List<NameValuePair> values = ((BcelAnnotation) ax).getBcelAnnotation().getValues();
for (Iterator<NameValuePair> it = values.iterator(); it.hasNext();) {
NameValuePair element = it.next();
EnumElementValue v = (EnumElementValue) element.getValue();
retentionPolicy = v.getEnumValueString();
return retentionPolicy;
}
}
}
}
}
return retentionPolicy;
}
public boolean canAnnotationTargetType() {
AnnotationTargetKind[] targetKinds = getAnnotationTargetKinds();
if (targetKinds == null) {
return true;
}
for (int i = 0; i < targetKinds.length; i++) {
if (targetKinds[i].equals(AnnotationTargetKind.TYPE)) {
return true;
}
}
return false;
}
public AnnotationTargetKind[] getAnnotationTargetKinds() {
if ((bitflag & DISCOVERED_ANNOTATION_TARGET_KINDS) != 0) {
return annotationTargetKinds;
}
bitflag |= DISCOVERED_ANNOTATION_TARGET_KINDS;
annotationTargetKinds = null; // null means we have no idea or the
// @Target annotation hasn't been used
List<AnnotationTargetKind> targetKinds = new ArrayList<AnnotationTargetKind>();
if (isAnnotation()) {
AnnotationAJ[] annotationsOnThisType = getAnnotations();
for (int i = 0; i < annotationsOnThisType.length; i++) {
AnnotationAJ a = annotationsOnThisType[i];
if (a.getTypeName().equals(UnresolvedType.AT_TARGET.getName())) {
Set<String> targets = a.getTargets();
if (targets != null) {
for (String targetKind : targets) {
if (targetKind.equals("ANNOTATION_TYPE")) {
targetKinds.add(AnnotationTargetKind.ANNOTATION_TYPE);
} else if (targetKind.equals("CONSTRUCTOR")) {
targetKinds.add(AnnotationTargetKind.CONSTRUCTOR);
} else if (targetKind.equals("FIELD")) {
targetKinds.add(AnnotationTargetKind.FIELD);
} else if (targetKind.equals("LOCAL_VARIABLE")) {
targetKinds.add(AnnotationTargetKind.LOCAL_VARIABLE);
} else if (targetKind.equals("METHOD")) {
targetKinds.add(AnnotationTargetKind.METHOD);
} else if (targetKind.equals("PACKAGE")) {
targetKinds.add(AnnotationTargetKind.PACKAGE);
} else if (targetKind.equals("PARAMETER")) {
targetKinds.add(AnnotationTargetKind.PARAMETER);
} else if (targetKind.equals("TYPE")) {
targetKinds.add(AnnotationTargetKind.TYPE);
}
}
}
}
}
if (!targetKinds.isEmpty()) {
annotationTargetKinds = new AnnotationTargetKind[targetKinds.size()];
return targetKinds.toArray(annotationTargetKinds);
}
}
return annotationTargetKinds;
}
// --- unpacking methods
private boolean isUnpackingAnnotations() {
return (bitflag & ANNOTATION_UNPACK_IN_PROGRESS) != 0;
}
private void ensureAnnotationsUnpacked() {
if (isUnpackingAnnotations()) {
throw new BCException("Re-entered weaver instance whilst unpacking annotations on " + this.className);
}
if (annotationTypes == null) {
try {
bitflag |= ANNOTATION_UNPACK_IN_PROGRESS;
AnnotationGen annos[] = javaClass.getAnnotations();
if (annos == null || annos.length == 0) {
annotationTypes = ResolvedType.NONE;
annotations = AnnotationAJ.EMPTY_ARRAY;
} else {
World w = getResolvedTypeX().getWorld();
annotationTypes = new ResolvedType[annos.length];
annotations = new AnnotationAJ[annos.length];
for (int i = 0; i < annos.length; i++) {
AnnotationGen annotation = annos[i];
String typeSignature = annotation.getTypeSignature();
ResolvedType rType = w.resolve(UnresolvedType.forSignature(typeSignature));
if (rType == null) {
throw new RuntimeException("Whilst unpacking annotations on '" + getResolvedTypeX().getName()
+ "', failed to resolve type '" + typeSignature + "'");
}
annotationTypes[i] = rType;
annotations[i] = new BcelAnnotation(annotation, rType);
}
}
} finally {
bitflag &= ~ANNOTATION_UNPACK_IN_PROGRESS;
}
}
}
// ---
public String getDeclaredGenericSignature() {
ensureGenericInfoProcessed();
return declaredSignature;
}
private void ensureGenericSignatureUnpacked() {
if ((bitflag & UNPACKED_GENERIC_SIGNATURE) != 0) {
return;
}
bitflag |= UNPACKED_GENERIC_SIGNATURE;
if (!getResolvedTypeX().getWorld().isInJava5Mode()) {
return;
}
GenericSignature.ClassSignature cSig = getGenericClassTypeSignature();
if (cSig != null) {
formalsForResolution = cSig.formalTypeParameters;
if (isNested()) {
// we have to find any type variables from the outer type before
// proceeding with resolution.
GenericSignature.FormalTypeParameter[] extraFormals = getFormalTypeParametersFromOuterClass();
if (extraFormals.length > 0) {
List<FormalTypeParameter> allFormals = new ArrayList<FormalTypeParameter>();
for (int i = 0; i < formalsForResolution.length; i++) {
allFormals.add(formalsForResolution[i]);
}
for (int i = 0; i < extraFormals.length; i++) {
allFormals.add(extraFormals[i]);
}
formalsForResolution = new GenericSignature.FormalTypeParameter[allFormals.size()];
allFormals.toArray(formalsForResolution);
}
}
GenericSignature.ClassTypeSignature superSig = cSig.superclassSignature;
try {
// this.superClass =
// BcelGenericSignatureToTypeXConverter.classTypeSignature2TypeX(
// superSig, formalsForResolution,
// getResolvedTypeX().getWorld());
ResolvedType rt = BcelGenericSignatureToTypeXConverter.classTypeSignature2TypeX(superSig, formalsForResolution,
getResolvedTypeX().getWorld());
this.superclassSignature = rt.getSignature();
this.superclassName = rt.getName();
} catch (GenericSignatureFormatException e) {
// development bug, fail fast with good info
throw new IllegalStateException("While determining the generic superclass of " + this.className
+ " with generic signature " + getDeclaredGenericSignature() + " the following error was detected: "
+ e.getMessage());
}
// this.interfaces = new
// ResolvedType[cSig.superInterfaceSignatures.length];
if (cSig.superInterfaceSignatures.length == 0) {
this.interfaceSignatures = NO_INTERFACE_SIGS;
} else {
this.interfaceSignatures = new String[cSig.superInterfaceSignatures.length];
for (int i = 0; i < cSig.superInterfaceSignatures.length; i++) {
try {
// this.interfaces[i] =
// BcelGenericSignatureToTypeXConverter.
// classTypeSignature2TypeX(
// cSig.superInterfaceSignatures[i],
// formalsForResolution,
// getResolvedTypeX().getWorld());
this.interfaceSignatures[i] = BcelGenericSignatureToTypeXConverter.classTypeSignature2TypeX(
cSig.superInterfaceSignatures[i], formalsForResolution, getResolvedTypeX().getWorld())
.getSignature();
} catch (GenericSignatureFormatException e) {
// development bug, fail fast with good info
throw new IllegalStateException("While determing the generic superinterfaces of " + this.className
+ " with generic signature " + getDeclaredGenericSignature()
+ " the following error was detected: " + e.getMessage());
}
}
}
}
if (isGeneric()) {
// update resolved typex to point at generic type not raw type.
ReferenceType genericType = (ReferenceType) this.resolvedTypeX.getGenericType();
// genericType.setSourceContext(this.resolvedTypeX.getSourceContext());
// Can be null if unpacking whilst building the bcel delegate (in call hierarchy from BcelWorld.addSourceObjectType()
// line 453) - see 317139
if (genericType != null) {
genericType.setStartPos(this.resolvedTypeX.getStartPos());
this.resolvedTypeX = genericType;
}
}
}
public GenericSignature.FormalTypeParameter[] getAllFormals() {
ensureGenericSignatureUnpacked();
if (formalsForResolution == null) {
return new GenericSignature.FormalTypeParameter[0];
} else {
return formalsForResolution;
}
}
public ResolvedType getOuterClass() {
if (!isNested()) {
throw new IllegalStateException("Can't get the outer class of non-nested type: " + className);
}
// try finding outer class name from InnerClasses attribute assigned to this class
for (Attribute attr : javaClass.getAttributes()) {
if (attr instanceof InnerClasses) {
// search for InnerClass entry that has current class as inner and some other class as outer
InnerClass[] innerClss = ((InnerClasses) attr).getInnerClasses();
ConstantPool cpool = javaClass.getConstantPool();
for (InnerClass innerCls : innerClss) {
// skip entries that miss any necessary component, 0 index means "undefined", from JVM Spec 2nd ed. par. 4.7.5
if (innerCls.getInnerClassIndex() == 0 || innerCls.getOuterClassIndex() == 0) {
continue;
}
// resolve inner class name, check if it matches current class name
ConstantClass innerClsInfo = (ConstantClass) cpool.getConstant(innerCls.getInnerClassIndex());
// class names in constant pool use '/' instead of '.', from JVM Spec 2nd ed. par. 4.2
String innerClsName = cpool.getConstantUtf8(innerClsInfo.getNameIndex()).getValue().replace('/', '.');
if (innerClsName.compareTo(className) == 0) {
// resolve outer class name
ConstantClass outerClsInfo = (ConstantClass) cpool.getConstant(innerCls.getOuterClassIndex());
// class names in constant pool use '/' instead of '.', from JVM Spec 2nd ed. par. 4.2
String outerClsName = cpool.getConstantUtf8(outerClsInfo.getNameIndex()).getValue().replace('/', '.');
UnresolvedType outer = UnresolvedType.forName(outerClsName);
return outer.resolve(getResolvedTypeX().getWorld());
}
}
}
}
for (Attribute attr : javaClass.getAttributes()) { // bug339300
ConstantPool cpool = javaClass.getConstantPool();
if (attr instanceof EnclosingMethod) {
EnclosingMethod enclosingMethodAttribute = (EnclosingMethod) attr;
if (enclosingMethodAttribute.getEnclosingClassIndex() != 0) {
ConstantClass outerClassInfo = enclosingMethodAttribute.getEnclosingClass();
String outerClassName = cpool.getConstantUtf8(outerClassInfo.getNameIndex()).getValue().replace('/', '.');
UnresolvedType outer = UnresolvedType.forName(outerClassName);
return outer.resolve(getResolvedTypeX().getWorld());
}
}
}
// try finding outer class name by assuming standard class name mangling convention of javac for this class
int lastDollar = className.lastIndexOf('$');
String superClassName = className.substring(0, lastDollar);
UnresolvedType outer = UnresolvedType.forName(superClassName);
return outer.resolve(getResolvedTypeX().getWorld());
}
private void ensureGenericInfoProcessed() {
if ((bitflag & DISCOVERED_DECLARED_SIGNATURE) != 0) {
return;
}
bitflag |= DISCOVERED_DECLARED_SIGNATURE;
Signature sigAttr = AttributeUtils.getSignatureAttribute(javaClass.getAttributes());
declaredSignature = (sigAttr == null ? null : sigAttr.getSignature());
if (declaredSignature != null) {
isGenericType = (declaredSignature.charAt(0) == '<');
}
}
public boolean isGeneric() {
ensureGenericInfoProcessed();
return isGenericType;
}
@Override
public String toString() {
return (javaClass == null ? "BcelObjectType" : "BcelObjectTypeFor:" + className);
}
// --- state management
public void evictWeavingState() {
// Can't chuck all this away
if (getResolvedTypeX().getWorld().couldIncrementalCompileFollow()) {
return;
}
if (javaClass != null) {
// Force retrieval of any lazy information
ensureAnnotationsUnpacked();
ensureGenericInfoProcessed();
getDeclaredInterfaces();
getDeclaredFields();
getDeclaredMethods();
// The lazyClassGen is preserved for aspects - it exists to enable
// around advice
// inlining since the method will need 'injecting' into the affected
// class. If
// XnoInline is on, we can chuck away the lazyClassGen since it
// won't be required
// later.
if (getResolvedTypeX().getWorld().isXnoInline()) {
lazyClassGen = null;
}
// discard expensive bytecode array containing reweavable info
if (weaverState != null) {
weaverState.setReweavable(false);
weaverState.setUnwovenClassFileData(null);
}
for (int i = methods.length - 1; i >= 0; i--) {
methods[i].evictWeavingState();
}
for (int i = fields.length - 1; i >= 0; i--) {
fields[i].evictWeavingState();
}
javaClass = null;
this.artificial = true;
// setSourceContext(SourceContextImpl.UNKNOWN_SOURCE_CONTEXT); //
// bit naughty
// interfaces=null; // force reinit - may get us the right
// instances!
// superClass=null;
}
}
public void weavingCompleted() {
hasBeenWoven = true;
if (getResolvedTypeX().getWorld().isRunMinimalMemory()) {
evictWeavingState();
}
if (getSourceContext() != null && !getResolvedTypeX().isAspect()) {
getSourceContext().tidy();
}
}
public boolean hasBeenWoven() {
return hasBeenWoven;
}
@Override
public boolean copySourceContext() {
return false;
}
public void setExposedToWeaver(boolean b) {
exposedToWeaver = b;
}
@Override
public int getCompilerVersion() {
return wvInfo.getMajorVersion();
}
public void ensureConsistent() {
superTypeReference.clear();
superInterfaceReferences.clear();
}
public boolean isWeavable() {
return true;
}
}