import org.aspectj.weaver.patterns.PerClause;
/**
- * Adds aspectOf, hasAspect etc to the annotation defined aspects
- *
- * @author <a href="mailto:alex AT gnilux DOT com">Alexandre Vasseur</a>
+ * Adds aspectOf(), hasAspect() etc to the annotation defined aspects
+ *
+ * @author Alexandre Vasseur
+ * @author Andy Clement
*/
public class BcelPerClauseAspectAdder extends BcelTypeMunger {
- private PerClause.Kind kind;
-
- private boolean hasGeneratedInner = false;
-
- public BcelPerClauseAspectAdder(ResolvedType aspect, PerClause.Kind kind) {
- super(null,aspect);
- this.kind = kind;
- if (kind == PerClause.SINGLETON || kind == PerClause.PERTYPEWITHIN || kind == PerClause.PERCFLOW) {
- // no inner needed
- hasGeneratedInner = true;
- }
- }
-
- public boolean munge(BcelClassWeaver weaver) {
- LazyClassGen gen = weaver.getLazyClassGen();
-
- doAggressiveInner(gen);
-
- // Only munge the aspect type
- if (!gen.getType().equals(aspectType)) {
- return false;
- }
-
- return doMunge(gen, true);
- }
-
- public boolean forceMunge(LazyClassGen gen, boolean checkAlreadyThere) {
- doAggressiveInner(gen);
- return doMunge(gen, checkAlreadyThere);
- }
-
- private void doAggressiveInner(LazyClassGen gen) {
- // agressively generate the inner interface if any
- // Note: we do so because of the bug #75442 that leads to have this interface implemented by all classes and not
- // only those matched by the per clause, which fails under LTW since the very first class
- // gets weaved and impl this interface that is still not defined.
- if (!hasGeneratedInner) {
- if (kind == PerClause.PEROBJECT) {//redundant test - see constructor, but safer
- //inner class
- UnresolvedType interfaceTypeX = AjcMemberMaker.perObjectInterfaceType(aspectType);
- LazyClassGen interfaceGen = new LazyClassGen(
- interfaceTypeX.getName(),
- "java.lang.Object",
- null,
- Constants.ACC_INTERFACE + Constants.ACC_PUBLIC + Constants.ACC_ABSTRACT,
- new String[0],
- getWorld()
- );
- interfaceGen.addMethodGen(makeMethodGen(interfaceGen, AjcMemberMaker.perObjectInterfaceGet(aspectType)));
- interfaceGen.addMethodGen(makeMethodGen(interfaceGen, AjcMemberMaker.perObjectInterfaceSet(aspectType)));
- //not really an inner class of it but that does not matter, we pass back to the LTW
- gen.addGeneratedInner(interfaceGen);
- }
- hasGeneratedInner = true;
- }
- }
-
- private boolean doMunge(LazyClassGen gen, boolean checkAlreadyThere) {
- if (checkAlreadyThere && hasPerClauseMembersAlready(gen)) {
- return false;
- }
-
- generatePerClauseMembers(gen);
-
- if (kind == PerClause.SINGLETON) {
- generatePerSingletonAspectOfMethod(gen);
- generatePerSingletonHasAspectMethod(gen);
- generatePerSingletonAjcClinitMethod(gen);
- } else if (kind == PerClause.PEROBJECT) {
- generatePerObjectAspectOfMethod(gen);
- generatePerObjectHasAspectMethod(gen);
- generatePerObjectBindMethod(gen);
- // these will be added by the PerObjectInterface munger that affects the type - pr144602
-// generatePerObjectGetSetMethods(gen);
- } else if (kind == PerClause.PERCFLOW) {
- generatePerCflowAspectOfMethod(gen);
- generatePerCflowHasAspectMethod(gen);
- generatePerCflowPushMethod(gen);
- generatePerCflowAjcClinitMethod(gen);
- } else if (kind == PerClause.PERTYPEWITHIN) {
- generatePerTWAspectOfMethod(gen);
- generatePerTWHasAspectMethod(gen);
- generatePerTWGetInstanceMethod(gen);
- generatePerTWCreateAspectInstanceMethod(gen);
- generatePerTWGetWithinTypeNameMethod(gen);
- } else {
- throw new Error("should not happen - not such kind " + kind.getName());
- }
- return true;
- }
-
-
- public ResolvedMember getMatchingSyntheticMember(Member member) {
- return null;
- }
-
- public ResolvedMember getSignature() {
- return null;
- }
-
- public boolean matches(ResolvedType onType) {
- // cannot always do the right thing because may need to eagerly generate ajcMightHaveAspect interface for LTW (says Alex)
- if (hasGeneratedInner) { // pr237419 - not always going to generate the marker interface
- return aspectType.equals(onType);
- } else {
- return true;
- }
- }
-
- private boolean hasPerClauseMembersAlready(LazyClassGen classGen) {
- ResolvedMember[] methods = classGen.getBcelObjectType().getDeclaredMethods();
- for (int i = 0; i < methods.length; i++) {
- ResolvedMember method = methods[i];
- if ("aspectOf".equals(method.getName())) {
- if ("()".equals(method.getParameterSignature()) && (kind == PerClause.SINGLETON || kind == PerClause.PERCFLOW)) {
- return true;
- } else if ("(Ljava/lang/Object;)".equals(method.getParameterSignature()) && kind == PerClause.PEROBJECT) {
- return true;
- } else if ("(Ljava/lang/Class;)".equals(method.getParameterSignature()) && kind == PerClause.PERTYPEWITHIN) {
- return true;
- }
- }
- }
- return false;
- }
-
- private void generatePerClauseMembers(LazyClassGen classGen) {
- //FIXME Alex handle when field already there - or handle it with / similar to isAnnotationDefinedAspect()
- // for that use aspectType and iterate on the fields.
-
- //FIXME Alex percflowX is not using this one but AJ code style does generate it so..
- ResolvedMember failureFieldInfo = AjcMemberMaker.initFailureCauseField(aspectType);
- if (kind == PerClause.SINGLETON) {
- classGen.addField(makeFieldGen(classGen, failureFieldInfo), null);
- }
-
- if (kind == PerClause.SINGLETON) {
- ResolvedMember perSingletonFieldInfo = AjcMemberMaker.perSingletonField(aspectType);
- classGen.addField(makeFieldGen(classGen, perSingletonFieldInfo), null);
-// pr144602 - don't need to do this, PerObjectInterface munger will do it
-// } else if (kind == PerClause.PEROBJECT) {
-// ResolvedMember perObjectFieldInfo = AjcMemberMaker.perObjectField(aspectType, aspectType);
-// classGen.addField(makeFieldGen(classGen, perObjectFieldInfo).(), null);
-// // if lazy generation of the inner interface MayHaveAspect works on LTW (see previous note)
-// // it should be done here.
- } else if (kind == PerClause.PERCFLOW) {
- ResolvedMember perCflowFieldInfo = AjcMemberMaker.perCflowField(aspectType);
- classGen.addField(makeFieldGen(classGen, perCflowFieldInfo), null);
- } else if (kind == PerClause.PERTYPEWITHIN) {
- ResolvedMember perTypeWithinForField = AjcMemberMaker.perTypeWithinWithinTypeField(aspectType, aspectType);
- classGen.addField(makeFieldGen(classGen, perTypeWithinForField), null);
-// } else {
-// throw new Error("Should not happen - no such kind " + kind.toString());
- }
- }
-
- private void generatePerSingletonAspectOfMethod(LazyClassGen classGen) {
- InstructionFactory factory = classGen.getFactory();
- LazyMethodGen method = makeMethodGen(classGen, AjcMemberMaker.perSingletonAspectOfMethod(aspectType));
- flagAsSynthetic(method, false);
- classGen.addMethodGen(method);
-
- InstructionList il = method.getBody();
- il.append(Utility.createGet(factory, AjcMemberMaker.perSingletonField(aspectType)));
- InstructionBranch ifNotNull = InstructionFactory.createBranchInstruction(Constants.IFNONNULL, null);
- il.append(ifNotNull);
- il.append(factory.createNew(AjcMemberMaker.NO_ASPECT_BOUND_EXCEPTION.getName()));
- il.append(InstructionConstants.DUP);
- il.append(InstructionFactory.PUSH(classGen.getConstantPool(), aspectType.getName()));
- il.append(Utility.createGet(factory, AjcMemberMaker.initFailureCauseField(aspectType)));
- il.append(factory.createInvoke(AjcMemberMaker.NO_ASPECT_BOUND_EXCEPTION.getName(), "<init>", Type.VOID, new Type[] { Type.STRING, new ObjectType("java.lang.Throwable") }, Constants.INVOKESPECIAL));
- il.append(InstructionConstants.ATHROW);
- InstructionHandle ifElse = il.append(Utility.createGet(factory, AjcMemberMaker.perSingletonField(aspectType)));
- il.append(InstructionFactory.createReturn(Type.OBJECT));
- ifNotNull.setTarget(ifElse);
- }
-
- private void generatePerSingletonHasAspectMethod(LazyClassGen classGen) {
- InstructionFactory factory = classGen.getFactory();
- LazyMethodGen method = makeMethodGen(classGen, AjcMemberMaker.perSingletonHasAspectMethod(aspectType));
- flagAsSynthetic(method, false);
- classGen.addMethodGen(method);
-
- InstructionList il = method.getBody();
- il.append(Utility.createGet(factory, AjcMemberMaker.perSingletonField(aspectType)));
- InstructionBranch ifNull = InstructionFactory.createBranchInstruction(Constants.IFNULL, null);
- il.append(ifNull);
- il.append(InstructionFactory.PUSH(classGen.getConstantPool(), true));
- il.append(InstructionFactory.createReturn(Type.INT));
- InstructionHandle ifElse = il.append(InstructionFactory.PUSH(classGen.getConstantPool(), false));
- il.append(InstructionFactory.createReturn(Type.INT));
- ifNull.setTarget(ifElse);
- }
-
-
- private void generatePerSingletonAjcClinitMethod(LazyClassGen classGen) {
- InstructionFactory factory = classGen.getFactory();
- LazyMethodGen method = makeMethodGen(classGen, AjcMemberMaker.ajcPostClinitMethod(aspectType));
- flagAsSynthetic(method, true);
- classGen.addMethodGen(method);
-
- InstructionList il = method.getBody();
- il.append(factory.createNew(aspectType.getName()));
- il.append(InstructionConstants.DUP);
- il.append(factory.createInvoke(aspectType.getName(), "<init>", Type.VOID, Type.NO_ARGS, Constants.INVOKESPECIAL));
- il.append(Utility.createSet(factory, AjcMemberMaker.perSingletonField(aspectType)));
- il.append(InstructionFactory.createReturn(Type.VOID));
-
- // patch <clinit> to delegate to ajc$postClinit at the end
- LazyMethodGen clinit = classGen.getStaticInitializer();
- il = new InstructionList();
- InstructionHandle tryStart = il.append(factory.createInvoke(aspectType.getName(), NameMangler.AJC_POST_CLINIT_NAME, Type.VOID, Type.NO_ARGS, Constants.INVOKESTATIC));
- InstructionBranch tryEnd = InstructionFactory.createBranchInstruction(Constants.GOTO, null);
- il.append(tryEnd);
- InstructionHandle handler = il.append(InstructionConstants.ASTORE_0);
- il.append(InstructionConstants.ALOAD_0);
- il.append(Utility.createSet(factory, AjcMemberMaker.initFailureCauseField(aspectType)));
- il.append(InstructionFactory.createReturn(Type.VOID));
- tryEnd.setTarget(il.getEnd());
-
- // replace the original "return" with a "nop"
- //TODO AV - a bit odd, looks like Bcel alters bytecode and has a IMPDEP1 in its representation
- if (clinit.getBody().getEnd().getInstruction().opcode == Constants.IMPDEP1) {
- clinit.getBody().getEnd().getPrev().setInstruction(InstructionConstants.NOP);
- }
- clinit.getBody().getEnd().setInstruction(InstructionConstants.NOP);
- clinit.getBody().append(il);
-
- clinit.addExceptionHandler(
- tryStart, handler.getPrev(), handler, new ObjectType("java.lang.Throwable"), false
- );
- }
-
- private void generatePerObjectAspectOfMethod(LazyClassGen classGen) {
- InstructionFactory factory = classGen.getFactory();
- ReferenceType interfaceType = (ReferenceType) BcelWorld.makeBcelType(AjcMemberMaker.perObjectInterfaceType(aspectType));
- LazyMethodGen method = makeMethodGen(classGen, AjcMemberMaker.perObjectAspectOfMethod(aspectType));
- flagAsSynthetic(method, false);
- classGen.addMethodGen(method);
-
- InstructionList il = method.getBody();
- il.append(InstructionConstants.ALOAD_0);
- il.append(factory.createInstanceOf(interfaceType));
- InstructionBranch ifEq = InstructionFactory.createBranchInstruction(Constants.IFEQ, null);
- il.append(ifEq);
- il.append(InstructionConstants.ALOAD_0);
- il.append(factory.createCheckCast(interfaceType));
- il.append(Utility.createInvoke(factory, Constants.INVOKEINTERFACE, AjcMemberMaker.perObjectInterfaceGet(aspectType)));
- il.append(InstructionConstants.DUP);
- InstructionBranch ifNull = InstructionFactory.createBranchInstruction(Constants.IFNULL, null);
- il.append(ifNull);
- il.append(InstructionFactory.createReturn(BcelWorld.makeBcelType(aspectType)));
- InstructionHandle ifNullElse = il.append(InstructionConstants.POP);
- ifNull.setTarget(ifNullElse);
- InstructionHandle ifEqElse = il.append(factory.createNew(AjcMemberMaker.NO_ASPECT_BOUND_EXCEPTION.getName()));
- ifEq.setTarget(ifEqElse);
- il.append(InstructionConstants.DUP);
- il.append(factory.createInvoke(AjcMemberMaker.NO_ASPECT_BOUND_EXCEPTION.getName(), "<init>", Type.VOID, Type.NO_ARGS, Constants.INVOKESPECIAL));
- il.append(InstructionConstants.ATHROW);
- }
-
- private void generatePerObjectHasAspectMethod(LazyClassGen classGen) {
- InstructionFactory factory = classGen.getFactory();
- ReferenceType interfaceType = (ReferenceType) BcelWorld.makeBcelType(AjcMemberMaker.perObjectInterfaceType(aspectType));
- LazyMethodGen method = makeMethodGen(classGen, AjcMemberMaker.perObjectHasAspectMethod(aspectType));
- flagAsSynthetic(method, false);
- classGen.addMethodGen(method);
-
- InstructionList il = method.getBody();
- il.append(InstructionConstants.ALOAD_0);
- il.append(factory.createInstanceOf(interfaceType));
- InstructionBranch ifEq = InstructionFactory.createBranchInstruction(Constants.IFEQ, null);
- il.append(ifEq);
- il.append(InstructionConstants.ALOAD_0);
- il.append(factory.createCheckCast(interfaceType));
- il.append(Utility.createInvoke(factory, Constants.INVOKEINTERFACE, AjcMemberMaker.perObjectInterfaceGet(aspectType)));
- InstructionBranch ifNull = InstructionFactory.createBranchInstruction(Constants.IFNULL, null);
- il.append(ifNull);
- il.append(InstructionConstants.ICONST_1);
- il.append(InstructionFactory.createReturn(Type.INT));
- InstructionHandle ifEqElse = il.append(InstructionConstants.ICONST_0);
- ifEq.setTarget(ifEqElse);
- ifNull.setTarget(ifEqElse);
- il.append(InstructionFactory.createReturn(Type.INT));
- }
-
- private void generatePerObjectBindMethod(LazyClassGen classGen) {
- InstructionFactory factory = classGen.getFactory();
- ReferenceType interfaceType = (ReferenceType) BcelWorld.makeBcelType(AjcMemberMaker.perObjectInterfaceType(aspectType));
- LazyMethodGen method = makeMethodGen(classGen, AjcMemberMaker.perObjectBind(aspectType));
- flagAsSynthetic(method, true);
- classGen.addMethodGen(method);
-
- InstructionList il = method.getBody();
- il.append(InstructionConstants.ALOAD_0);
- il.append(factory.createInstanceOf(interfaceType));
- InstructionBranch ifEq = InstructionFactory.createBranchInstruction(Constants.IFEQ, null);
- il.append(ifEq);
- il.append(InstructionConstants.ALOAD_0);
- il.append(factory.createCheckCast(interfaceType));
- il.append(Utility.createInvoke(factory, Constants.INVOKEINTERFACE, AjcMemberMaker.perObjectInterfaceGet(aspectType)));
- InstructionBranch ifNonNull = InstructionFactory.createBranchInstruction(Constants.IFNONNULL, null);
- il.append(ifNonNull);
- il.append(InstructionConstants.ALOAD_0);
- il.append(factory.createCheckCast(interfaceType));
- il.append(factory.createNew(aspectType.getName()));
- il.append(InstructionConstants.DUP);
- il.append(factory.createInvoke(aspectType.getName(), "<init>", Type.VOID, Type.NO_ARGS, Constants.INVOKESPECIAL));
- il.append(Utility.createInvoke(factory, Constants.INVOKEINTERFACE, AjcMemberMaker.perObjectInterfaceSet(aspectType)));
- InstructionHandle end = il.append(InstructionFactory.createReturn(Type.VOID));
- ifEq.setTarget(end);
- ifNonNull.setTarget(end);
- }
-
-// private void generatePerObjectGetSetMethods(LazyClassGen classGen) {
-// InstructionFactory factory = classGen.getFactory();
-//
-// LazyMethodGen methodGet = makeMethodGen(classGen, AjcMemberMaker.perObjectInterfaceGet(aspectType));
-// flagAsSynthetic(methodGet, true);
-// classGen.addMethodGen(methodGet);
-// InstructionList ilGet = methodGet.getBody();
-// ilGet = new InstructionList();
-// ilGet.append(InstructionConstants.ALOAD_0);
-// ilGet.append(Utility.createGet(factory, AjcMemberMaker.perObjectField(aspectType, aspectType)));
-// ilGet.append(InstructionFactory.createReturn(Type.OBJECT));
-//
-// LazyMethodGen methodSet = makeMethodGen(classGen, AjcMemberMaker.perObjectInterfaceSet(aspectType));
-// flagAsSynthetic(methodSet, true);
-// classGen.addMethodGen(methodSet);
-// InstructionList ilSet = methodSet.getBody();
-// ilSet = new InstructionList();
-// ilSet.append(InstructionConstants.ALOAD_0);
-// ilSet.append(InstructionConstants.ALOAD_1);
-// ilSet.append(Utility.createSet(factory, AjcMemberMaker.perObjectField(aspectType, aspectType)));
-// ilSet.append(InstructionFactory.createReturn(Type.VOID));
-// }
-
- private void generatePerCflowAspectOfMethod(LazyClassGen classGen) {
- InstructionFactory factory = classGen.getFactory();
- LazyMethodGen method = makeMethodGen(classGen, AjcMemberMaker.perCflowAspectOfMethod(aspectType));
- flagAsSynthetic(method, false);
- classGen.addMethodGen(method);
-
- InstructionList il = method.getBody();
- il.append(Utility.createGet(factory, AjcMemberMaker.perCflowField(aspectType)));
- il.append(Utility.createInvoke(factory, Constants.INVOKEVIRTUAL, AjcMemberMaker.cflowStackPeekInstance()));
- il.append(factory.createCheckCast((ReferenceType)BcelWorld.makeBcelType(aspectType)));
- il.append(InstructionFactory.createReturn(Type.OBJECT));
- }
-
- private void generatePerCflowHasAspectMethod(LazyClassGen classGen) {
- InstructionFactory factory = classGen.getFactory();
- LazyMethodGen method = makeMethodGen(classGen, AjcMemberMaker.perCflowHasAspectMethod(aspectType));
- flagAsSynthetic(method, false);
- classGen.addMethodGen(method);
-
- InstructionList il = method.getBody();
- il.append(Utility.createGet(factory, AjcMemberMaker.perCflowField(aspectType)));
- il.append(Utility.createInvoke(factory, Constants.INVOKEVIRTUAL, AjcMemberMaker.cflowStackIsValid()));
- il.append(InstructionFactory.createReturn(Type.INT));
- }
-
- private void generatePerCflowPushMethod(LazyClassGen classGen) {
- InstructionFactory factory = classGen.getFactory();
- LazyMethodGen method = makeMethodGen(classGen, AjcMemberMaker.perCflowPush(aspectType));
- flagAsSynthetic(method, true);
- classGen.addMethodGen(method);
-
- InstructionList il = method.getBody();
- il.append(Utility.createGet(factory, AjcMemberMaker.perCflowField(aspectType)));
- il.append(factory.createNew(aspectType.getName()));
- il.append(InstructionConstants.DUP);
- il.append(factory.createInvoke(aspectType.getName(), "<init>", Type.VOID, Type.NO_ARGS, Constants.INVOKESPECIAL));
- il.append(Utility.createInvoke(factory, Constants.INVOKEVIRTUAL, AjcMemberMaker.cflowStackPushInstance()));
- il.append(InstructionFactory.createReturn(Type.VOID));
- }
-
- private void generatePerCflowAjcClinitMethod(LazyClassGen classGen) {
- InstructionFactory factory = classGen.getFactory();
- LazyMethodGen method = makeMethodGen(classGen, AjcMemberMaker.ajcPreClinitMethod(aspectType));
- flagAsSynthetic(method, true);
- classGen.addMethodGen(method);
-
- InstructionList il = method.getBody();
- il.append(factory.createNew(AjcMemberMaker.CFLOW_STACK_TYPE.getName()));
- il.append(InstructionConstants.DUP);
- il.append(factory.createInvoke(AjcMemberMaker.CFLOW_STACK_TYPE.getName(), "<init>", Type.VOID, Type.NO_ARGS, Constants.INVOKESPECIAL));
- il.append(Utility.createSet(factory, AjcMemberMaker.perCflowField(aspectType)));
- il.append(InstructionFactory.createReturn(Type.VOID));
-
- // patch <clinit> to delegate to ajc$preClinit at the beginning
- LazyMethodGen clinit = classGen.getStaticInitializer();
- il = new InstructionList();
- il.append(factory.createInvoke(aspectType.getName(), NameMangler.AJC_PRE_CLINIT_NAME, Type.VOID, Type.NO_ARGS, Constants.INVOKESTATIC));
- clinit.getBody().insert(il);
- }
-
- private void generatePerTWAspectOfMethod(LazyClassGen classGen) {
- InstructionFactory factory = classGen.getFactory();
- LazyMethodGen method = makeMethodGen(classGen, AjcMemberMaker.perTypeWithinAspectOfMethod(aspectType,classGen.getWorld().isInJava5Mode()));
- flagAsSynthetic(method, false);
- classGen.addMethodGen(method);
-
- InstructionList il = method.getBody();
- InstructionHandle tryStart = il.append(InstructionConstants.ALOAD_0);
-
- il.append(Utility.createInvoke(
- factory,
- Constants.INVOKESTATIC,
- AjcMemberMaker.perTypeWithinGetInstance(aspectType)
- ));
- il.append(InstructionConstants.ASTORE_1);
- il.append(InstructionConstants.ALOAD_1);
- InstructionBranch ifNonNull = InstructionFactory.createBranchInstruction(Constants.IFNONNULL, null);
- il.append(ifNonNull);
- il.append(factory.createNew(AjcMemberMaker.NO_ASPECT_BOUND_EXCEPTION.getName()));
- il.append(InstructionConstants.DUP);
- il.append(InstructionFactory.PUSH(classGen.getConstantPool(), aspectType.getName()));
- il.append(InstructionConstants.ACONST_NULL);
- il.append(factory.createInvoke(AjcMemberMaker.NO_ASPECT_BOUND_EXCEPTION.getName(), "<init>", Type.VOID, new Type[] { Type.STRING, new ObjectType("java.lang.Throwable") }, Constants.INVOKESPECIAL));
- il.append(InstructionConstants.ATHROW);
- InstructionHandle ifElse = il.append(InstructionConstants.ALOAD_1);
- ifNonNull.setTarget(ifElse);
- il.append(InstructionFactory.createReturn(Type.OBJECT));
-
- InstructionHandle handler = il.append(InstructionConstants.ASTORE_1);
- il.append(factory.createNew(AjcMemberMaker.NO_ASPECT_BOUND_EXCEPTION.getName()));
- il.append(InstructionConstants.DUP);
- il.append(factory.createInvoke(AjcMemberMaker.NO_ASPECT_BOUND_EXCEPTION.getName(), "<init>", Type.VOID, Type.NO_ARGS, Constants.INVOKESPECIAL));
- il.append(InstructionConstants.ATHROW);
-
- method.addExceptionHandler(
- tryStart, handler.getPrev(), handler, new ObjectType("java.lang.Exception"), false
- );
- }
-
- // Create 'public String getWithinTypeName() { return ajc$withinType;}'
- private void generatePerTWGetWithinTypeNameMethod(LazyClassGen classGen) {
- InstructionFactory factory = classGen.getFactory();
- LazyMethodGen method = makeMethodGen(classGen, AjcMemberMaker.perTypeWithinGetWithinTypeNameMethod(aspectType,classGen.getWorld().isInJava5Mode()));
- flagAsSynthetic(method, false);
- classGen.addMethodGen(method);
- // 0: aload_0
- // 1: getfield #14; //Field ajc$withinType:Ljava/lang/String;
- // 4: areturn
- InstructionList il = method.getBody();
- il.append(InstructionConstants.ALOAD_0);
- il.append(Utility.createGet(factory, AjcMemberMaker.perTypeWithinWithinTypeField(aspectType, aspectType)));
- il.append(InstructionConstants.ARETURN);
- }
-
- private void generatePerTWHasAspectMethod(LazyClassGen classGen) {
- InstructionFactory factory = classGen.getFactory();
- LazyMethodGen method = makeMethodGen(classGen, AjcMemberMaker.perTypeWithinHasAspectMethod(aspectType,classGen.getWorld().isInJava5Mode()));
- flagAsSynthetic(method, false);
- classGen.addMethodGen(method);
-
- InstructionList il = method.getBody();
- InstructionHandle tryStart = il.append(InstructionConstants.ALOAD_0);
- il.append(Utility.createInvoke(
- factory,
- Constants.INVOKESTATIC,
- AjcMemberMaker.perTypeWithinGetInstance(aspectType)
- ));
- InstructionBranch ifNull = InstructionFactory.createBranchInstruction(Constants.IFNULL, null);
- il.append(ifNull);
- il.append(InstructionConstants.ICONST_1);
- il.append(InstructionConstants.IRETURN);
- InstructionHandle ifElse = il.append(InstructionConstants.ICONST_0);
- ifNull.setTarget(ifElse);
- il.append(InstructionConstants.IRETURN);
-
- InstructionHandle handler = il.append(InstructionConstants.ASTORE_1);
- il.append(InstructionConstants.ICONST_0);
- il.append(InstructionConstants.IRETURN);
-
- method.addExceptionHandler(
- tryStart, handler.getPrev(), handler, new ObjectType("java.lang.Exception"), false
- );
- }
-
- private void generatePerTWGetInstanceMethod(LazyClassGen classGen) {
- InstructionFactory factory = classGen.getFactory();
- LazyMethodGen method = makeMethodGen(classGen, AjcMemberMaker.perTypeWithinGetInstance(aspectType));
- flagAsSynthetic(method, true);
- classGen.addMethodGen(method);
-
- InstructionList il = method.getBody();
- InstructionHandle tryStart = il.append(InstructionConstants.ALOAD_0);
- il.append(InstructionFactory.PUSH(factory.getConstantPool(), NameMangler.perTypeWithinLocalAspectOf(aspectType)));
- il.append(InstructionConstants.ACONST_NULL);//Class[] for "getDeclaredMethod"
- il.append(factory.createInvoke(
- "java/lang/Class",
- "getDeclaredMethod",
- Type.getType("Ljava/lang/reflect/Method;"),
- new Type[]{Type.getType("Ljava/lang/String;"), Type.getType("[Ljava/lang/Class;")},
- Constants.INVOKEVIRTUAL
- ));
- il.append(InstructionConstants.ACONST_NULL);//Object for "invoke", static method
- il.append(InstructionConstants.ACONST_NULL);//Object[] for "invoke", no arg
- il.append(factory.createInvoke(
- "java/lang/reflect/Method",
- "invoke",
- Type.OBJECT,
- new Type[]{Type.getType("Ljava/lang/Object;"), Type.getType("[Ljava/lang/Object;")},
- Constants.INVOKEVIRTUAL
- ));
- il.append(factory.createCheckCast((ReferenceType) BcelWorld.makeBcelType(aspectType)));
- il.append(InstructionConstants.ARETURN);
-
- InstructionHandle handler = il.append(InstructionConstants.ASTORE_1);
- il.append(InstructionConstants.ACONST_NULL);
- il.append(InstructionConstants.ARETURN);
-
- method.addExceptionHandler(
- tryStart, handler.getPrev(), handler, new ObjectType("java.lang.Exception"), false
- );
- }
-
- private void generatePerTWCreateAspectInstanceMethod(LazyClassGen classGen) {
- InstructionFactory factory = classGen.getFactory();
- LazyMethodGen method = makeMethodGen(classGen, AjcMemberMaker.perTypeWithinCreateAspectInstance(aspectType));
- flagAsSynthetic(method, true);
- classGen.addMethodGen(method);
-
- InstructionList il = method.getBody();
- il.append(factory.createNew(aspectType.getName()));
- il.append(InstructionConstants.DUP);
- il.append(factory.createInvoke(
- aspectType.getName(), "<init>", Type.VOID, Type.NO_ARGS, Constants.INVOKESPECIAL
- ));
- il.append(InstructionConstants.ASTORE_1);
- il.append(InstructionConstants.ALOAD_1);
- il.append(InstructionConstants.ALOAD_0);
- il.append(Utility.createSet(
- factory,
- AjcMemberMaker.perTypeWithinWithinTypeField(aspectType, aspectType)
- ));
- il.append(InstructionConstants.ALOAD_1);
- il.append(InstructionConstants.ARETURN);
- }
-
- /**
- * Add standard Synthetic (if wished) and AjSynthetic (always) attributes
- * @param methodGen
- * @param makeJavaSynthetic true if standard Synthetic attribute must be set as well (invisible to user)
- */
- private static void flagAsSynthetic(LazyMethodGen methodGen, boolean makeJavaSynthetic) {
- if (makeJavaSynthetic) {
- methodGen.makeSynthetic();
- }
- methodGen.addAttribute(
- Utility.bcelAttribute(
- new AjAttribute.AjSynthetic(),
- methodGen.getEnclosingClass().getConstantPool()
- )
- );
- }
-
-// public boolean isLateTypeMunger() {
- // return true;
- //}
+ private final PerClause.Kind kind;
+
+ private boolean hasGeneratedInner = false;
+
+ public BcelPerClauseAspectAdder(ResolvedType aspect, PerClause.Kind kind) {
+ super(null, aspect);
+ this.kind = kind;
+ if (kind == PerClause.SINGLETON || kind == PerClause.PERTYPEWITHIN || kind == PerClause.PERCFLOW) {
+ // no inner needed
+ hasGeneratedInner = true;
+ }
+ }
+
+ public boolean munge(BcelClassWeaver weaver) {
+ LazyClassGen gen = weaver.getLazyClassGen();
+
+ doAggressiveInner(gen);
+
+ // Only munge the aspect type
+ if (!gen.getType().equals(aspectType)) {
+ return false;
+ }
+
+ return doMunge(gen, true);
+ }
+
+ public boolean forceMunge(LazyClassGen gen, boolean checkAlreadyThere) {
+ doAggressiveInner(gen);
+ return doMunge(gen, checkAlreadyThere);
+ }
+
+ private void doAggressiveInner(LazyClassGen gen) {
+ // agressively generate the inner interface if any
+ // Note: we do so because of the bug #75442 that leads to have this interface implemented by all classes and not
+ // only those matched by the per clause, which fails under LTW since the very first class
+ // gets weaved and impl this interface that is still not defined.
+ if (!hasGeneratedInner) {
+ if (kind == PerClause.PEROBJECT) {// redundant test - see constructor, but safer
+ // inner class
+ UnresolvedType interfaceTypeX = AjcMemberMaker.perObjectInterfaceType(aspectType);
+ LazyClassGen interfaceGen = new LazyClassGen(interfaceTypeX.getName(), "java.lang.Object", null,
+ Constants.ACC_INTERFACE + Constants.ACC_PUBLIC + Constants.ACC_ABSTRACT, new String[0], getWorld());
+ interfaceGen.addMethodGen(makeMethodGen(interfaceGen, AjcMemberMaker.perObjectInterfaceGet(aspectType)));
+ interfaceGen.addMethodGen(makeMethodGen(interfaceGen, AjcMemberMaker.perObjectInterfaceSet(aspectType)));
+ // not really an inner class of it but that does not matter, we pass back to the LTW
+ gen.addGeneratedInner(interfaceGen);
+ }
+ hasGeneratedInner = true;
+ }
+ }
+
+ private boolean doMunge(LazyClassGen gen, boolean checkAlreadyThere) {
+ if (checkAlreadyThere && hasPerClauseMembersAlready(gen)) {
+ return false;
+ }
+
+ generatePerClauseMembers(gen);
+
+ if (kind == PerClause.SINGLETON) {
+ generatePerSingletonAspectOfMethod(gen);
+ generatePerSingletonHasAspectMethod(gen);
+ generatePerSingletonAjcClinitMethod(gen);
+ } else if (kind == PerClause.PEROBJECT) {
+ generatePerObjectAspectOfMethod(gen);
+ generatePerObjectHasAspectMethod(gen);
+ generatePerObjectBindMethod(gen);
+ // these will be added by the PerObjectInterface munger that affects the type - pr144602
+ // generatePerObjectGetSetMethods(gen);
+ } else if (kind == PerClause.PERCFLOW) {
+ generatePerCflowAspectOfMethod(gen);
+ generatePerCflowHasAspectMethod(gen);
+ generatePerCflowPushMethod(gen);
+ generatePerCflowAjcClinitMethod(gen);
+ } else if (kind == PerClause.PERTYPEWITHIN) {
+ generatePerTWAspectOfMethod(gen);
+ generatePerTWHasAspectMethod(gen);
+ generatePerTWGetInstanceMethod(gen);
+ generatePerTWCreateAspectInstanceMethod(gen);
+ generatePerTWGetWithinTypeNameMethod(gen);
+ } else {
+ throw new Error("should not happen - not such kind " + kind.getName());
+ }
+ return true;
+ }
+
+ public ResolvedMember getMatchingSyntheticMember(Member member) {
+ return null;
+ }
+
+ public ResolvedMember getSignature() {
+ return null;
+ }
+
+ public boolean matches(ResolvedType onType) {
+ // cannot always do the right thing because may need to eagerly generate ajcMightHaveAspect interface for LTW (says Alex)
+ if (hasGeneratedInner) { // pr237419 - not always going to generate the marker interface
+ return aspectType.equals(onType);
+ } else {
+ return true;
+ }
+ }
+
+ private boolean hasPerClauseMembersAlready(LazyClassGen classGen) {
+ ResolvedMember[] methods = classGen.getBcelObjectType().getDeclaredMethods();
+ for (int i = 0; i < methods.length; i++) {
+ ResolvedMember method = methods[i];
+ if ("aspectOf".equals(method.getName())) {
+ if ("()".equals(method.getParameterSignature()) && (kind == PerClause.SINGLETON || kind == PerClause.PERCFLOW)) {
+ return true;
+ } else if ("(Ljava/lang/Object;)".equals(method.getParameterSignature()) && kind == PerClause.PEROBJECT) {
+ return true;
+ } else if ("(Ljava/lang/Class;)".equals(method.getParameterSignature()) && kind == PerClause.PERTYPEWITHIN) {
+ return true;
+ }
+ }
+ }
+ return false;
+ }
+
+ private void generatePerClauseMembers(LazyClassGen classGen) {
+ // FIXME Alex handle when field already there - or handle it with / similar to isAnnotationDefinedAspect()
+ // for that use aspectType and iterate on the fields.
+
+ // FIXME Alex percflowX is not using this one but AJ code style does generate it so..
+ ResolvedMember failureFieldInfo = AjcMemberMaker.initFailureCauseField(aspectType);
+ if (kind == PerClause.SINGLETON) {
+ classGen.addField(makeFieldGen(classGen, failureFieldInfo), null);
+ }
+
+ if (kind == PerClause.SINGLETON) {
+ ResolvedMember perSingletonFieldInfo = AjcMemberMaker.perSingletonField(aspectType);
+ classGen.addField(makeFieldGen(classGen, perSingletonFieldInfo), null);
+ // pr144602 - don't need to do this, PerObjectInterface munger will do it
+ // } else if (kind == PerClause.PEROBJECT) {
+ // ResolvedMember perObjectFieldInfo = AjcMemberMaker.perObjectField(aspectType, aspectType);
+ // classGen.addField(makeFieldGen(classGen, perObjectFieldInfo).(), null);
+ // // if lazy generation of the inner interface MayHaveAspect works on LTW (see previous note)
+ // // it should be done here.
+ } else if (kind == PerClause.PERCFLOW) {
+ ResolvedMember perCflowFieldInfo = AjcMemberMaker.perCflowField(aspectType);
+ classGen.addField(makeFieldGen(classGen, perCflowFieldInfo), null);
+ } else if (kind == PerClause.PERTYPEWITHIN) {
+ ResolvedMember perTypeWithinForField = AjcMemberMaker.perTypeWithinWithinTypeField(aspectType, aspectType);
+ classGen.addField(makeFieldGen(classGen, perTypeWithinForField), null);
+ }
+ }
+
+ private void generatePerSingletonAspectOfMethod(LazyClassGen classGen) {
+ InstructionFactory factory = classGen.getFactory();
+ LazyMethodGen method = makeMethodGen(classGen, AjcMemberMaker.perSingletonAspectOfMethod(aspectType));
+ flagAsSynthetic(method, false);
+ classGen.addMethodGen(method);
+
+ InstructionList il = method.getBody();
+ il.append(Utility.createGet(factory, AjcMemberMaker.perSingletonField(aspectType)));
+ InstructionBranch ifNotNull = InstructionFactory.createBranchInstruction(Constants.IFNONNULL, null);
+ il.append(ifNotNull);
+ il.append(factory.createNew(AjcMemberMaker.NO_ASPECT_BOUND_EXCEPTION.getName()));
+ il.append(InstructionConstants.DUP);
+ il.append(InstructionFactory.PUSH(classGen.getConstantPool(), aspectType.getName()));
+ il.append(Utility.createGet(factory, AjcMemberMaker.initFailureCauseField(aspectType)));
+ il.append(factory.createInvoke(AjcMemberMaker.NO_ASPECT_BOUND_EXCEPTION.getName(), "<init>", Type.VOID, new Type[] {
+ Type.STRING, new ObjectType("java.lang.Throwable") }, Constants.INVOKESPECIAL));
+ il.append(InstructionConstants.ATHROW);
+ InstructionHandle ifElse = il.append(Utility.createGet(factory, AjcMemberMaker.perSingletonField(aspectType)));
+ il.append(InstructionFactory.createReturn(Type.OBJECT));
+ ifNotNull.setTarget(ifElse);
+ }
+
+ private void generatePerSingletonHasAspectMethod(LazyClassGen classGen) {
+ InstructionFactory factory = classGen.getFactory();
+ LazyMethodGen method = makeMethodGen(classGen, AjcMemberMaker.perSingletonHasAspectMethod(aspectType));
+ flagAsSynthetic(method, false);
+ classGen.addMethodGen(method);
+
+ InstructionList il = method.getBody();
+ il.append(Utility.createGet(factory, AjcMemberMaker.perSingletonField(aspectType)));
+ InstructionBranch ifNull = InstructionFactory.createBranchInstruction(Constants.IFNULL, null);
+ il.append(ifNull);
+ il.append(InstructionFactory.PUSH(classGen.getConstantPool(), true));
+ il.append(InstructionFactory.createReturn(Type.INT));
+ InstructionHandle ifElse = il.append(InstructionFactory.PUSH(classGen.getConstantPool(), false));
+ il.append(InstructionFactory.createReturn(Type.INT));
+ ifNull.setTarget(ifElse);
+ }
+
+ private void generatePerSingletonAjcClinitMethod(LazyClassGen classGen) {
+ InstructionFactory factory = classGen.getFactory();
+ LazyMethodGen method = makeMethodGen(classGen, AjcMemberMaker.ajcPostClinitMethod(aspectType));
+ flagAsSynthetic(method, true);
+ classGen.addMethodGen(method);
+
+ InstructionList il = method.getBody();
+ il.append(factory.createNew(aspectType.getName()));
+ il.append(InstructionConstants.DUP);
+ il.append(factory.createInvoke(aspectType.getName(), "<init>", Type.VOID, Type.NO_ARGS, Constants.INVOKESPECIAL));
+ il.append(Utility.createSet(factory, AjcMemberMaker.perSingletonField(aspectType)));
+ il.append(InstructionFactory.createReturn(Type.VOID));
+
+ // patch <clinit> to delegate to ajc$postClinit at the end
+ LazyMethodGen clinit = classGen.getStaticInitializer();
+ il = new InstructionList();
+ InstructionHandle tryStart = il.append(factory.createInvoke(aspectType.getName(), NameMangler.AJC_POST_CLINIT_NAME,
+ Type.VOID, Type.NO_ARGS, Constants.INVOKESTATIC));
+ InstructionBranch tryEnd = InstructionFactory.createBranchInstruction(Constants.GOTO, null);
+ il.append(tryEnd);
+ InstructionHandle handler = il.append(InstructionConstants.ASTORE_0);
+ il.append(InstructionConstants.ALOAD_0);
+ il.append(Utility.createSet(factory, AjcMemberMaker.initFailureCauseField(aspectType)));
+ il.append(InstructionFactory.createReturn(Type.VOID));
+ tryEnd.setTarget(il.getEnd());
+
+ // replace the original "return" with a "nop"
+ // TODO AV - a bit odd, looks like Bcel alters bytecode and has a IMPDEP1 in its representation
+ if (clinit.getBody().getEnd().getInstruction().opcode == Constants.IMPDEP1) {
+ clinit.getBody().getEnd().getPrev().setInstruction(InstructionConstants.NOP);
+ }
+ clinit.getBody().getEnd().setInstruction(InstructionConstants.NOP);
+ clinit.getBody().append(il);
+
+ clinit.addExceptionHandler(tryStart, handler.getPrev(), handler, new ObjectType("java.lang.Throwable"), false);
+ }
+
+ private void generatePerObjectAspectOfMethod(LazyClassGen classGen) {
+ InstructionFactory factory = classGen.getFactory();
+ ReferenceType interfaceType = (ReferenceType) BcelWorld.makeBcelType(AjcMemberMaker.perObjectInterfaceType(aspectType));
+ LazyMethodGen method = makeMethodGen(classGen, AjcMemberMaker.perObjectAspectOfMethod(aspectType));
+ flagAsSynthetic(method, false);
+ classGen.addMethodGen(method);
+
+ InstructionList il = method.getBody();
+ il.append(InstructionConstants.ALOAD_0);
+ il.append(factory.createInstanceOf(interfaceType));
+ InstructionBranch ifEq = InstructionFactory.createBranchInstruction(Constants.IFEQ, null);
+ il.append(ifEq);
+ il.append(InstructionConstants.ALOAD_0);
+ il.append(factory.createCheckCast(interfaceType));
+ il.append(Utility.createInvoke(factory, Constants.INVOKEINTERFACE, AjcMemberMaker.perObjectInterfaceGet(aspectType)));
+ il.append(InstructionConstants.DUP);
+ InstructionBranch ifNull = InstructionFactory.createBranchInstruction(Constants.IFNULL, null);
+ il.append(ifNull);
+ il.append(InstructionFactory.createReturn(BcelWorld.makeBcelType(aspectType)));
+ InstructionHandle ifNullElse = il.append(InstructionConstants.POP);
+ ifNull.setTarget(ifNullElse);
+ InstructionHandle ifEqElse = il.append(factory.createNew(AjcMemberMaker.NO_ASPECT_BOUND_EXCEPTION.getName()));
+ ifEq.setTarget(ifEqElse);
+ il.append(InstructionConstants.DUP);
+ il.append(factory.createInvoke(AjcMemberMaker.NO_ASPECT_BOUND_EXCEPTION.getName(), "<init>", Type.VOID, Type.NO_ARGS,
+ Constants.INVOKESPECIAL));
+ il.append(InstructionConstants.ATHROW);
+ }
+
+ private void generatePerObjectHasAspectMethod(LazyClassGen classGen) {
+ InstructionFactory factory = classGen.getFactory();
+ ReferenceType interfaceType = (ReferenceType) BcelWorld.makeBcelType(AjcMemberMaker.perObjectInterfaceType(aspectType));
+ LazyMethodGen method = makeMethodGen(classGen, AjcMemberMaker.perObjectHasAspectMethod(aspectType));
+ flagAsSynthetic(method, false);
+ classGen.addMethodGen(method);
+
+ InstructionList il = method.getBody();
+ il.append(InstructionConstants.ALOAD_0);
+ il.append(factory.createInstanceOf(interfaceType));
+ InstructionBranch ifEq = InstructionFactory.createBranchInstruction(Constants.IFEQ, null);
+ il.append(ifEq);
+ il.append(InstructionConstants.ALOAD_0);
+ il.append(factory.createCheckCast(interfaceType));
+ il.append(Utility.createInvoke(factory, Constants.INVOKEINTERFACE, AjcMemberMaker.perObjectInterfaceGet(aspectType)));
+ InstructionBranch ifNull = InstructionFactory.createBranchInstruction(Constants.IFNULL, null);
+ il.append(ifNull);
+ il.append(InstructionConstants.ICONST_1);
+ il.append(InstructionFactory.createReturn(Type.INT));
+ InstructionHandle ifEqElse = il.append(InstructionConstants.ICONST_0);
+ ifEq.setTarget(ifEqElse);
+ ifNull.setTarget(ifEqElse);
+ il.append(InstructionFactory.createReturn(Type.INT));
+ }
+
+ private void generatePerObjectBindMethod(LazyClassGen classGen) {
+ InstructionFactory factory = classGen.getFactory();
+ ReferenceType interfaceType = (ReferenceType) BcelWorld.makeBcelType(AjcMemberMaker.perObjectInterfaceType(aspectType));
+ LazyMethodGen method = makeMethodGen(classGen, AjcMemberMaker.perObjectBind(aspectType));
+ flagAsSynthetic(method, true);
+ classGen.addMethodGen(method);
+
+ InstructionList il = method.getBody();
+ il.append(InstructionConstants.ALOAD_0);
+ il.append(factory.createInstanceOf(interfaceType));
+ InstructionBranch ifEq = InstructionFactory.createBranchInstruction(Constants.IFEQ, null);
+ il.append(ifEq);
+ il.append(InstructionConstants.ALOAD_0);
+ il.append(factory.createCheckCast(interfaceType));
+ il.append(Utility.createInvoke(factory, Constants.INVOKEINTERFACE, AjcMemberMaker.perObjectInterfaceGet(aspectType)));
+ InstructionBranch ifNonNull = InstructionFactory.createBranchInstruction(Constants.IFNONNULL, null);
+ il.append(ifNonNull);
+ il.append(InstructionConstants.ALOAD_0);
+ il.append(factory.createCheckCast(interfaceType));
+ il.append(factory.createNew(aspectType.getName()));
+ il.append(InstructionConstants.DUP);
+ il.append(factory.createInvoke(aspectType.getName(), "<init>", Type.VOID, Type.NO_ARGS, Constants.INVOKESPECIAL));
+ il.append(Utility.createInvoke(factory, Constants.INVOKEINTERFACE, AjcMemberMaker.perObjectInterfaceSet(aspectType)));
+ InstructionHandle end = il.append(InstructionFactory.createReturn(Type.VOID));
+ ifEq.setTarget(end);
+ ifNonNull.setTarget(end);
+ }
+
+ // private void generatePerObjectGetSetMethods(LazyClassGen classGen) {
+ // InstructionFactory factory = classGen.getFactory();
+ //
+ // LazyMethodGen methodGet = makeMethodGen(classGen, AjcMemberMaker.perObjectInterfaceGet(aspectType));
+ // flagAsSynthetic(methodGet, true);
+ // classGen.addMethodGen(methodGet);
+ // InstructionList ilGet = methodGet.getBody();
+ // ilGet = new InstructionList();
+ // ilGet.append(InstructionConstants.ALOAD_0);
+ // ilGet.append(Utility.createGet(factory, AjcMemberMaker.perObjectField(aspectType, aspectType)));
+ // ilGet.append(InstructionFactory.createReturn(Type.OBJECT));
+ //
+ // LazyMethodGen methodSet = makeMethodGen(classGen, AjcMemberMaker.perObjectInterfaceSet(aspectType));
+ // flagAsSynthetic(methodSet, true);
+ // classGen.addMethodGen(methodSet);
+ // InstructionList ilSet = methodSet.getBody();
+ // ilSet = new InstructionList();
+ // ilSet.append(InstructionConstants.ALOAD_0);
+ // ilSet.append(InstructionConstants.ALOAD_1);
+ // ilSet.append(Utility.createSet(factory, AjcMemberMaker.perObjectField(aspectType, aspectType)));
+ // ilSet.append(InstructionFactory.createReturn(Type.VOID));
+ // }
+
+ private void generatePerCflowAspectOfMethod(LazyClassGen classGen) {
+ InstructionFactory factory = classGen.getFactory();
+ LazyMethodGen method = makeMethodGen(classGen, AjcMemberMaker.perCflowAspectOfMethod(aspectType));
+ flagAsSynthetic(method, false);
+ classGen.addMethodGen(method);
+
+ InstructionList il = method.getBody();
+ il.append(Utility.createGet(factory, AjcMemberMaker.perCflowField(aspectType)));
+ il.append(Utility.createInvoke(factory, Constants.INVOKEVIRTUAL, AjcMemberMaker.cflowStackPeekInstance()));
+ il.append(factory.createCheckCast((ReferenceType) BcelWorld.makeBcelType(aspectType)));
+ il.append(InstructionFactory.createReturn(Type.OBJECT));
+ }
+
+ private void generatePerCflowHasAspectMethod(LazyClassGen classGen) {
+ InstructionFactory factory = classGen.getFactory();
+ LazyMethodGen method = makeMethodGen(classGen, AjcMemberMaker.perCflowHasAspectMethod(aspectType));
+ flagAsSynthetic(method, false);
+ classGen.addMethodGen(method);
+
+ InstructionList il = method.getBody();
+ il.append(Utility.createGet(factory, AjcMemberMaker.perCflowField(aspectType)));
+ il.append(Utility.createInvoke(factory, Constants.INVOKEVIRTUAL, AjcMemberMaker.cflowStackIsValid()));
+ il.append(InstructionFactory.createReturn(Type.INT));
+ }
+
+ private void generatePerCflowPushMethod(LazyClassGen classGen) {
+ InstructionFactory factory = classGen.getFactory();
+ LazyMethodGen method = makeMethodGen(classGen, AjcMemberMaker.perCflowPush(aspectType));
+ flagAsSynthetic(method, true);
+ classGen.addMethodGen(method);
+
+ InstructionList il = method.getBody();
+ il.append(Utility.createGet(factory, AjcMemberMaker.perCflowField(aspectType)));
+ il.append(factory.createNew(aspectType.getName()));
+ il.append(InstructionConstants.DUP);
+ il.append(factory.createInvoke(aspectType.getName(), "<init>", Type.VOID, Type.NO_ARGS, Constants.INVOKESPECIAL));
+ il.append(Utility.createInvoke(factory, Constants.INVOKEVIRTUAL, AjcMemberMaker.cflowStackPushInstance()));
+ il.append(InstructionFactory.createReturn(Type.VOID));
+ }
+
+ private void generatePerCflowAjcClinitMethod(LazyClassGen classGen) {
+ InstructionFactory factory = classGen.getFactory();
+ LazyMethodGen method = makeMethodGen(classGen, AjcMemberMaker.ajcPreClinitMethod(aspectType));
+ flagAsSynthetic(method, true);
+ classGen.addMethodGen(method);
+
+ InstructionList il = method.getBody();
+ il.append(factory.createNew(AjcMemberMaker.CFLOW_STACK_TYPE.getName()));
+ il.append(InstructionConstants.DUP);
+ il.append(factory.createInvoke(AjcMemberMaker.CFLOW_STACK_TYPE.getName(), "<init>", Type.VOID, Type.NO_ARGS,
+ Constants.INVOKESPECIAL));
+ il.append(Utility.createSet(factory, AjcMemberMaker.perCflowField(aspectType)));
+ il.append(InstructionFactory.createReturn(Type.VOID));
+
+ // patch <clinit> to delegate to ajc$preClinit at the beginning
+ LazyMethodGen clinit = classGen.getStaticInitializer();
+ il = new InstructionList();
+ il.append(factory.createInvoke(aspectType.getName(), NameMangler.AJC_PRE_CLINIT_NAME, Type.VOID, Type.NO_ARGS,
+ Constants.INVOKESTATIC));
+ clinit.getBody().insert(il);
+ }
+
+ private void generatePerTWAspectOfMethod(LazyClassGen classGen) {
+ InstructionFactory factory = classGen.getFactory();
+ LazyMethodGen method = makeMethodGen(classGen, AjcMemberMaker.perTypeWithinAspectOfMethod(aspectType, classGen.getWorld()
+ .isInJava5Mode()));
+ flagAsSynthetic(method, false);
+ classGen.addMethodGen(method);
+
+ InstructionList il = method.getBody();
+ InstructionHandle tryStart = il.append(InstructionConstants.ALOAD_0);
+
+ il.append(Utility.createInvoke(factory, Constants.INVOKESTATIC, AjcMemberMaker.perTypeWithinGetInstance(aspectType)));
+ il.append(InstructionConstants.ASTORE_1);
+ il.append(InstructionConstants.ALOAD_1);
+ InstructionBranch ifNonNull = InstructionFactory.createBranchInstruction(Constants.IFNONNULL, null);
+ il.append(ifNonNull);
+ il.append(factory.createNew(AjcMemberMaker.NO_ASPECT_BOUND_EXCEPTION.getName()));
+ il.append(InstructionConstants.DUP);
+ il.append(InstructionFactory.PUSH(classGen.getConstantPool(), aspectType.getName()));
+ il.append(InstructionConstants.ACONST_NULL);
+ il.append(factory.createInvoke(AjcMemberMaker.NO_ASPECT_BOUND_EXCEPTION.getName(), "<init>", Type.VOID, new Type[] {
+ Type.STRING, new ObjectType("java.lang.Throwable") }, Constants.INVOKESPECIAL));
+ il.append(InstructionConstants.ATHROW);
+ InstructionHandle ifElse = il.append(InstructionConstants.ALOAD_1);
+ ifNonNull.setTarget(ifElse);
+ il.append(InstructionFactory.createReturn(Type.OBJECT));
+
+ InstructionHandle handler = il.append(InstructionConstants.ASTORE_1);
+ il.append(factory.createNew(AjcMemberMaker.NO_ASPECT_BOUND_EXCEPTION.getName()));
+ il.append(InstructionConstants.DUP);
+ il.append(factory.createInvoke(AjcMemberMaker.NO_ASPECT_BOUND_EXCEPTION.getName(), "<init>", Type.VOID, Type.NO_ARGS,
+ Constants.INVOKESPECIAL));
+ il.append(InstructionConstants.ATHROW);
+
+ method.addExceptionHandler(tryStart, handler.getPrev(), handler, new ObjectType("java.lang.Exception"), false);
+ }
+
+ // Create 'public String getWithinTypeName() { return ajc$withinType;}'
+ private void generatePerTWGetWithinTypeNameMethod(LazyClassGen classGen) {
+ InstructionFactory factory = classGen.getFactory();
+ LazyMethodGen method = makeMethodGen(classGen, AjcMemberMaker.perTypeWithinGetWithinTypeNameMethod(aspectType, classGen
+ .getWorld().isInJava5Mode()));
+ flagAsSynthetic(method, false);
+ classGen.addMethodGen(method);
+ // 0: aload_0
+ // 1: getfield #14; //Field ajc$withinType:Ljava/lang/String;
+ // 4: areturn
+ InstructionList il = method.getBody();
+ il.append(InstructionConstants.ALOAD_0);
+ il.append(Utility.createGet(factory, AjcMemberMaker.perTypeWithinWithinTypeField(aspectType, aspectType)));
+ il.append(InstructionConstants.ARETURN);
+ }
+
+ private void generatePerTWHasAspectMethod(LazyClassGen classGen) {
+ InstructionFactory factory = classGen.getFactory();
+ LazyMethodGen method = makeMethodGen(classGen, AjcMemberMaker.perTypeWithinHasAspectMethod(aspectType, classGen.getWorld()
+ .isInJava5Mode()));
+ flagAsSynthetic(method, false);
+ classGen.addMethodGen(method);
+
+ InstructionList il = method.getBody();
+ InstructionHandle tryStart = il.append(InstructionConstants.ALOAD_0);
+ il.append(Utility.createInvoke(factory, Constants.INVOKESTATIC, AjcMemberMaker.perTypeWithinGetInstance(aspectType)));
+ InstructionBranch ifNull = InstructionFactory.createBranchInstruction(Constants.IFNULL, null);
+ il.append(ifNull);
+ il.append(InstructionConstants.ICONST_1);
+ il.append(InstructionConstants.IRETURN);
+ InstructionHandle ifElse = il.append(InstructionConstants.ICONST_0);
+ ifNull.setTarget(ifElse);
+ il.append(InstructionConstants.IRETURN);
+
+ InstructionHandle handler = il.append(InstructionConstants.ASTORE_1);
+ il.append(InstructionConstants.ICONST_0);
+ il.append(InstructionConstants.IRETURN);
+
+ method.addExceptionHandler(tryStart, handler.getPrev(), handler, new ObjectType("java.lang.Exception"), false);
+ }
+
+ private void generatePerTWGetInstanceMethod(LazyClassGen classGen) {
+ InstructionFactory factory = classGen.getFactory();
+ LazyMethodGen method = makeMethodGen(classGen, AjcMemberMaker.perTypeWithinGetInstance(aspectType));
+ flagAsSynthetic(method, true);
+ classGen.addMethodGen(method);
+
+ InstructionList il = method.getBody();
+ InstructionHandle tryStart = il.append(InstructionConstants.ALOAD_0);
+ il.append(InstructionFactory.PUSH(factory.getConstantPool(), NameMangler.perTypeWithinLocalAspectOf(aspectType)));
+ il.append(InstructionConstants.ACONST_NULL);// Class[] for "getDeclaredMethod"
+ il.append(factory.createInvoke("java/lang/Class", "getDeclaredMethod", Type.getType("Ljava/lang/reflect/Method;"),
+ new Type[] { Type.getType("Ljava/lang/String;"), Type.getType("[Ljava/lang/Class;") }, Constants.INVOKEVIRTUAL));
+ il.append(InstructionConstants.ACONST_NULL);// Object for "invoke", static method
+ il.append(InstructionConstants.ACONST_NULL);// Object[] for "invoke", no arg
+ il.append(factory.createInvoke("java/lang/reflect/Method", "invoke", Type.OBJECT, new Type[] {
+ Type.getType("Ljava/lang/Object;"), Type.getType("[Ljava/lang/Object;") }, Constants.INVOKEVIRTUAL));
+ il.append(factory.createCheckCast((ReferenceType) BcelWorld.makeBcelType(aspectType)));
+ il.append(InstructionConstants.ARETURN);
+
+ InstructionHandle handler = il.append(InstructionConstants.ASTORE_1);
+ il.append(InstructionConstants.ACONST_NULL);
+ il.append(InstructionConstants.ARETURN);
+
+ method.addExceptionHandler(tryStart, handler.getPrev(), handler, new ObjectType("java.lang.Exception"), false);
+ }
+
+ private void generatePerTWCreateAspectInstanceMethod(LazyClassGen classGen) {
+ InstructionFactory factory = classGen.getFactory();
+ LazyMethodGen method = makeMethodGen(classGen, AjcMemberMaker.perTypeWithinCreateAspectInstance(aspectType));
+ flagAsSynthetic(method, true);
+ classGen.addMethodGen(method);
+
+ InstructionList il = method.getBody();
+ il.append(factory.createNew(aspectType.getName()));
+ il.append(InstructionConstants.DUP);
+ il.append(factory.createInvoke(aspectType.getName(), "<init>", Type.VOID, Type.NO_ARGS, Constants.INVOKESPECIAL));
+ il.append(InstructionConstants.ASTORE_1);
+ il.append(InstructionConstants.ALOAD_1);
+ il.append(InstructionConstants.ALOAD_0);
+ il.append(Utility.createSet(factory, AjcMemberMaker.perTypeWithinWithinTypeField(aspectType, aspectType)));
+ il.append(InstructionConstants.ALOAD_1);
+ il.append(InstructionConstants.ARETURN);
+ }
+
+ /**
+ * Add standard Synthetic (if wished) and AjSynthetic (always) attributes
+ *
+ * @param methodGen
+ * @param makeJavaSynthetic true if standard Synthetic attribute must be set as well (invisible to user)
+ */
+ private static void flagAsSynthetic(LazyMethodGen methodGen, boolean makeJavaSynthetic) {
+ if (makeJavaSynthetic) {
+ methodGen.makeSynthetic();
+ }
+ methodGen.addAttribute(Utility
+ .bcelAttribute(new AjAttribute.AjSynthetic(), methodGen.getEnclosingClass().getConstantPool()));
+ }
+
+ // public boolean isLateTypeMunger() {
+ // return true;
+ // }
}