Package org.apache.bcel.generic

Examples of org.apache.bcel.generic.ObjectType

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            // get the aspectwerkz system
            il.append(new PUSH(cpg, uuid));
            il.append(factory.createInvoke(
                    TransformationUtil.ASPECT_WERKZ_CLASS,
                    "getSystem",
                    new ObjectType(TransformationUtil.ASPECT_WERKZ_CLASS),
                    new Type[]{Type.STRING},
                    Constants.INVOKESTATIC));

            // get the introduction
            il.append(new PUSH(cpg, introductionIndex));
            il.append(factory.createInvoke(
                    TransformationUtil.ASPECT_WERKZ_CLASS,
                    "getIntroduction",
                    new ObjectType(TransformationUtil.INTRODUCTION_CLASS),
                    new Type[]{Type.INT},
                    Constants.INVOKEVIRTUAL));

            il.append(new PUSH(cpg, methodIndex));

            il.append(factory.createLoad(Type.OBJECT, idxParam));
            il.append(factory.createLoad(Type.OBJECT, 0));

            il.append(factory.createInvoke(
                    TransformationUtil.INTRODUCTION_CLASS,
                    "invoke",
                    Type.OBJECT,
                    new Type[]{Type.INT, new ArrayType(Type.OBJECT, 1), Type.OBJECT},
                    Constants.INVOKEVIRTUAL));
        }
        else {
            // get the aspectwerkz system
            il.append(new PUSH(cpg, uuid));
            il.append(factory.createInvoke(
                    TransformationUtil.ASPECT_WERKZ_CLASS,
                    "getSystem",
                    new ObjectType(TransformationUtil.ASPECT_WERKZ_CLASS),
                    new Type[]{Type.STRING},
                    Constants.INVOKESTATIC));

            // no parameters
            il.append(new PUSH(cpg, introductionIndex));
            il.append(factory.createInvoke(
                    TransformationUtil.ASPECT_WERKZ_CLASS,
                    "getIntroduction",
                    new ObjectType(TransformationUtil.INTRODUCTION_CLASS),
                    new Type[]{Type.INT},
                    Constants.INVOKEVIRTUAL));

            il.append(new PUSH(cpg, methodIndex));
            il.append(factory.createLoad(Type.OBJECT, 0));

            il.append(factory.createInvoke(
                    TransformationUtil.INTRODUCTION_CLASS,
                    "invoke",
                    Type.OBJECT,
                    new Type[]{Type.INT, Type.OBJECT},
                    Constants.INVOKEVIRTUAL));
        }

        // take care of the return type
        if (!bcelReturnType.equals(Type.VOID)) {

            // cast the result and return it, if the return type is a
            // primitive type, retrieve it from the wrapped object first
            if (bcelReturnType instanceof BasicType) {
                if (bcelReturnType.equals(Type.LONG)) {
                    il.append(factory.createCheckCast(
                            new ObjectType("java.lang.Long")));
                    il.append(factory.createInvoke(
                            "java.lang.Long",
                            "longValue",
                            Type.LONG,
                            Type.NO_ARGS,
                            Constants.INVOKEVIRTUAL));
                }
                else if (bcelReturnType.equals(Type.INT)) {
                    il.append(factory.createCheckCast(
                            new ObjectType("java.lang.Integer")));
                    il.append(factory.createInvoke(
                            "java.lang.Integer",
                            "intValue",
                            Type.INT,
                            Type.NO_ARGS,
                            Constants.INVOKEVIRTUAL));
                }
                else if (bcelReturnType.equals(Type.SHORT)) {
                    il.append(factory.createCheckCast(
                            new ObjectType("java.lang.Short")));
                    il.append(factory.createInvoke(
                            "java.lang.Short",
                            "shortValue",
                            Type.SHORT,
                            Type.NO_ARGS,
                            Constants.INVOKEVIRTUAL));
                }
                else if (bcelReturnType.equals(Type.DOUBLE)) {
                    il.append(factory.createCheckCast(
                            new ObjectType("java.lang.Double")));
                    il.append(factory.createInvoke(
                            "java.lang.Double",
                            "doubleValue",
                            Type.DOUBLE,
                            Type.NO_ARGS,
                            Constants.INVOKEVIRTUAL));
                }
                else if (bcelReturnType.equals(Type.FLOAT)) {
                    il.append(factory.createCheckCast(
                            new ObjectType("java.lang.Float")));
                    il.append(factory.createInvoke(
                            "java.lang.Float",
                            "floatValue",
                            Type.FLOAT,
                            Type.NO_ARGS,
                            Constants.INVOKEVIRTUAL));
                }
                else if (bcelReturnType.equals(Type.CHAR)) {
                    il.append(factory.createCheckCast(
                            new ObjectType("java.lang.Character")));
                    il.append(factory.createInvoke(
                            "java.lang.Character",
                            "charValue",
                            Type.CHAR,
                            Type.NO_ARGS,
                            Constants.INVOKEVIRTUAL));
                }
                else if (bcelReturnType.equals(Type.BYTE)) {
                    il.append(factory.createCheckCast(
                            new ObjectType("java.lang.Byte")));
                    il.append(factory.createInvoke(
                            "java.lang.Byte",
                            "byteValue",
                            Type.BYTE,
                            Type.NO_ARGS,
                            Constants.INVOKEVIRTUAL));
                }
                else if (bcelReturnType.equals(Type.BOOLEAN)) {
                    il.append(factory.createCheckCast(
                            new ObjectType("java.lang.Boolean")));
                    il.append(factory.createInvoke(
                            "java.lang.Boolean",
                            "booleanValue",
                            Type.BOOLEAN,
                            Type.NO_ARGS,
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            return;
        }

        final FieldGen field = new FieldGen(
                Constants.ACC_PRIVATE | Constants.ACC_FINAL,
                new ObjectType(TransformationUtil.THREAD_LOCAL_CLASS),
                joinPoint.toString(),
                cp
        );
        cg.addField(field.getField());
    }
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        ));

        il.insert(ih, factory.createFieldAccess(
                cg.getClassName(),
                joinPoint.toString(),
                new ObjectType(TransformationUtil.THREAD_LOCAL_CLASS),
                Constants.PUTFIELD
        ));
        il.redirectBranches(ih, ihPost);

        mg.setMaxStack();
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        // Object joinPoint = ___jp.get();
        il.append(factory.createLoad(Type.OBJECT, 0));
        il.append(factory.createFieldAccess(
                cg.getClassName(),
                joinPoint.toString(),
                new ObjectType(TransformationUtil.THREAD_LOCAL_CLASS),
                Constants.GETFIELD
        ));
        il.append(factory.createInvoke(
                TransformationUtil.THREAD_LOCAL_CLASS,
                "get",
                Type.OBJECT,
                Type.NO_ARGS,
                Constants.INVOKEVIRTUAL
        ));
        il.append(factory.createStore(Type.OBJECT, indexJoinPoint));

        // if (joinPoint == null) {
        il.append(factory.createLoad(Type.OBJECT, indexJoinPoint));
        biIfNotNull = factory.createBranchInstruction(Constants.IFNONNULL, null);
        il.append(biIfNotNull);

        // joinPoint = new MemberMethodJoinPoint(uuid, this, "foo.bar.Baz", 10);
        il.append(factory.createNew(TransformationUtil.MEMBER_METHOD_JOIN_POINT_CLASS));
        il.append(InstructionConstants.DUP);

        il.append(new PUSH(cp, uuid));
        il.append(factory.createLoad(Type.OBJECT, 0));
        il.append(new PUSH(cp, cg.getClassName()));
        il.append(new PUSH(cp, methodId));
        il.append(new PUSH(cp, controllerClassName));

        il.append(factory.createInvoke(
                TransformationUtil.MEMBER_METHOD_JOIN_POINT_CLASS,
                "<init>",
                Type.VOID,
                new Type[]{Type.STRING, Type.OBJECT, Type.STRING, Type.INT, Type.STRING},
                Constants.INVOKESPECIAL
        ));
        il.append(factory.createStore(Type.OBJECT, indexJoinPoint));

        // ___jp.set(joinPoint);
        il.append(factory.createLoad(Type.OBJECT, 0));
        il.append(factory.createFieldAccess(
                cg.getClassName(),
                joinPoint.toString(),
                new ObjectType(TransformationUtil.THREAD_LOCAL_CLASS),
                Constants.GETFIELD
        ));
        il.append(factory.createLoad(Type.OBJECT, indexJoinPoint));
        il.append(factory.createInvoke(
                TransformationUtil.THREAD_LOCAL_CLASS,
                "set",
                Type.VOID,
                new Type[]{Type.OBJECT},
                Constants.INVOKEVIRTUAL
        ));

        ihIfNotNull = il.append(factory.createLoad(Type.OBJECT, indexJoinPoint));
        il.append(factory.createCheckCast(TransformationUtil.MEMBER_METHOD_JOIN_POINT_TYPE));
        indexJoinPoint += 2;
        il.append(factory.createStore(Type.OBJECT, indexJoinPoint));

        biIfNotNull.setTarget(ihIfNotNull);

        // if we have parameters, wrap them up
        if (Type.getArgumentTypes(originalMethod.getSignature()).length != 0) {

            // create and allocate the parameters array
            il.append(new PUSH(cp, Type.getArgumentTypes(originalMethod.getSignature()).length));
            il.append(factory.createNewArray(Type.OBJECT, (short)1));

            il.append(InstructionConstants.DUP);
            il.append(new PUSH(cp, indexStack));
            indexStack++;

            // add all the parameters, wrap the primitive types in their object counterparts
            for (int count = 0; count < Type.getArgumentTypes(originalMethod.getSignature()).length; count++) {

                String wrapperClass = null;
                BasicType type = null;
                boolean hasLongOrDouble = false;

                if (Type.getArgumentTypes(originalMethod.getSignature())[count] instanceof ObjectType ||
                        Type.getArgumentTypes(originalMethod.getSignature())[count] instanceof ArrayType) {
                    // we have an object or an array
                    il.append(factory.createLoad(Type.OBJECT, indexParam));
                    il.append(InstructionConstants.AASTORE);
                    indexParam++;
                }
                else if (Type.getArgumentTypes(originalMethod.getSignature())[count] instanceof ArrayType) {
                    // we have an array
                    il.append(factory.createLoad(Type.OBJECT, indexParam));
                    il.append(InstructionConstants.AASTORE);
                    indexParam++;
                }
                else if (Type.getArgumentTypes(originalMethod.getSignature())[count] instanceof BasicType) {
                    hasLongOrDouble = false;
                    // we have a primitive type
                    if ((Type.getArgumentTypes(originalMethod.getSignature())[count]).equals(Type.LONG)) {
                        wrapperClass = "java.lang.Long";
                        type = Type.LONG;
                        hasLongOrDouble = true;
                    }
                    else if ((Type.getArgumentTypes(originalMethod.getSignature())[count]).equals(Type.INT)) {
                        wrapperClass = "java.lang.Integer";
                        type = Type.INT;
                    }
                    else if ((Type.getArgumentTypes(originalMethod.getSignature())[count]).equals(Type.SHORT)) {
                        wrapperClass = "java.lang.Short";
                        type = Type.SHORT;
                    }
                    else if ((Type.getArgumentTypes(originalMethod.getSignature())[count]).equals(Type.DOUBLE)) {
                        wrapperClass = "java.lang.Double";
                        type = Type.DOUBLE;
                        hasLongOrDouble = true;
                    }
                    else if ((Type.getArgumentTypes(originalMethod.getSignature())[count]).equals(Type.FLOAT)) {
                        wrapperClass = "java.lang.Float";
                        type = Type.FLOAT;
                    }
                    else if ((Type.getArgumentTypes(originalMethod.getSignature())[count]).equals(Type.CHAR)) {
                        wrapperClass = "java.lang.Character";
                        type = Type.CHAR;
                    }
                    else if ((Type.getArgumentTypes(originalMethod.getSignature())[count]).equals(Type.BYTE)) {
                        wrapperClass = "java.lang.Byte";
                        type = Type.BYTE;
                    }
                    else if ((Type.getArgumentTypes(originalMethod.getSignature())[count]).equals(Type.BOOLEAN)) {
                        wrapperClass = "java.lang.Boolean";
                        type = Type.BOOLEAN;
                    }
                    else {
                        throw new RuntimeException("unknown parameter type: " + Type.getArgumentTypes(originalMethod.getSignature())[count]);
                    }
                    il.append(factory.createNew(wrapperClass));
                    il.append(InstructionConstants.DUP);
                    il.append(factory.createLoad(type, indexParam));
                    il.append(factory.createInvoke(
                            wrapperClass,
                            "<init>",
                            Type.VOID,
                            new Type[]{type},
                            Constants.INVOKESPECIAL
                    ));
                    il.append(InstructionConstants.AASTORE);
                    indexParam++;
                } // end handle basic or object type

                if (count != Type.getArgumentTypes(originalMethod.getSignature()).length - 1) {
                    // if we don't have the last parameter, create the parameter on the stack
                    il.append(InstructionConstants.DUP);
                    il.append(new PUSH(cp, indexStack));
                    indexStack++;

                    // long or double needs two registers to fit
                    if (hasLongOrDouble) indexParam++;
                }
            }

            // create the object array
            il.append(factory.createStore(Type.OBJECT, indexParam));

            // if threadsafe grab the newly retrieved local join point field from the stack
            il.append(factory.createLoad(Type.OBJECT, indexJoinPoint));

            // invoke joinPoint.setParameter(..)
            il.append(factory.createLoad(Type.OBJECT, indexParam));
            il.append(factory.createInvoke(
                    TransformationUtil.MEMBER_METHOD_JOIN_POINT_CLASS,
                    "setParameters",
                    Type.VOID,
                    new Type[]{new ArrayType(Type.OBJECT, 1)},
                    Constants.INVOKEVIRTUAL
            ));
            indexParam++;

        } // end - if parameters.length != 0

        // if threadsafe grab the newly retrieved local join point field from the stack
        il.append(factory.createLoad(Type.OBJECT, indexJoinPoint));
        il.append(factory.createInvoke(
                TransformationUtil.MEMBER_METHOD_JOIN_POINT_CLASS,
                "proceed",
                Type.OBJECT,
                Type.NO_ARGS,
                Constants.INVOKEVIRTUAL
        ));

        if (!Type.getReturnType(originalMethod.getSignature()).equals(Type.VOID)) {
            // create the result from the invocation
            il.append(factory.createStore(Type.OBJECT, indexParam));
            il.append(factory.createLoad(Type.OBJECT, indexParam));

            // cast the result and return it, if the return type is a
            // primitive type, retrieve it from the wrapped object first
            if (Type.getReturnType(originalMethod.getSignature()) instanceof BasicType) {
                if (Type.getReturnType(originalMethod.getSignature()).equals(Type.LONG)) {
                    il.append(factory.createCheckCast(new ObjectType("java.lang.Long")));
                    il.append(factory.createInvoke(
                            "java.lang.Long",
                            "longValue",
                            Type.LONG,
                            Type.NO_ARGS,
                            Constants.INVOKEVIRTUAL
                    ));
                }
                else if (Type.getReturnType(originalMethod.getSignature()).equals(Type.INT)) {
                    il.append(factory.createCheckCast(new ObjectType("java.lang.Integer")));
                    il.append(factory.createInvoke(
                            "java.lang.Integer",
                            "intValue",
                            Type.INT,
                            Type.NO_ARGS,
                            Constants.INVOKEVIRTUAL
                    ));
                }
                else if (Type.getReturnType(originalMethod.getSignature()).equals(Type.SHORT)) {
                    il.append(factory.createCheckCast(new ObjectType("java.lang.Short")));
                    il.append(factory.createInvoke(
                            "java.lang.Short",
                            "shortValue",
                            Type.SHORT,
                            Type.NO_ARGS,
                            Constants.INVOKEVIRTUAL
                    ));
                }
                else if (Type.getReturnType(originalMethod.getSignature()).equals(Type.DOUBLE)) {
                    il.append(factory.createCheckCast(new ObjectType("java.lang.Double")));
                    il.append(factory.createInvoke(
                            "java.lang.Double",
                            "doubleValue",
                            Type.DOUBLE,
                            Type.NO_ARGS,
                            Constants.INVOKEVIRTUAL
                    ));
                }
                else if (Type.getReturnType(originalMethod.getSignature()).equals(Type.FLOAT)) {
                    il.append(factory.createCheckCast(new ObjectType("java.lang.Float")));
                    il.append(factory.createInvoke(
                            "java.lang.Float",
                            "floatValue",
                            Type.FLOAT,
                            Type.NO_ARGS,
                            Constants.INVOKEVIRTUAL
                    ));
                }
                else if (Type.getReturnType(originalMethod.getSignature()).equals(Type.CHAR)) {
                    il.append(factory.createCheckCast(new ObjectType("java.lang.Character")));
                    il.append(factory.createInvoke(
                            "java.lang.Character",
                            "charValue",
                            Type.CHAR,
                            Type.NO_ARGS,
                            Constants.INVOKEVIRTUAL
                    ));
                }
                else if (Type.getReturnType(originalMethod.getSignature()).equals(Type.BYTE)) {
                    il.append(factory.createCheckCast(new ObjectType("java.lang.Byte")));
                    il.append(factory.createInvoke(
                            "java.lang.Byte",
                            "byteValue",
                            Type.BYTE,
                            Type.NO_ARGS,
                            Constants.INVOKEVIRTUAL
                    ));
                }
                else if (Type.getReturnType(originalMethod.getSignature()).equals(Type.BOOLEAN)) {
                    il.append(factory.createCheckCast(new ObjectType("java.lang.Boolean")));
                    il.append(factory.createInvoke(
                            "java.lang.Boolean",
                            "booleanValue",
                            Type.BOOLEAN,
                            Type.NO_ARGS,
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                         InstConstraintVisitor icv, ExecutionVisitor ev) {
        // build the initial frame situation for this method.
        Frame vanillaFrame = new Frame(method.getMaxLocals(), method.getMaxStack());
        if (!method.isStatic()) {
            if (method.getName().equals(Constants.CONSTRUCTOR_NAME)) {
                Frame._this = new UninitializedObjectType(new ObjectType(clazz.getClassName()));
                vanillaFrame.getLocals().set(0, new UninitializedObjectType(new ObjectType(clazz.getClassName())));
            } else {
                Frame._this = null;
                vanillaFrame.getLocals().set(0, new ObjectType(clazz.getClassName()));
            }
        }
        // fill local variables with parameter types
        Type[] argtypes = method.getArgumentTypes();
        int twoslotoffset = 0;
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                    // Add frame saver and restorer for the current breakpoint

                    // determine type of object for the method invocation
                    InvokeInstruction invoke = (InvokeInstruction)ins.getInstruction();
                    Type[] arguments = invoke.getArgumentTypes(method.getConstantPool()); 
                    ObjectType objecttype = null;
                    if (!(invoke instanceof INVOKESTATIC)) {
                        objecttype = (ObjectType)context.getInFrame().getStack().peek(arguments.length);
                    }
                    InstructionList rList = restoreFrame(method, ins, insFactory, frame, objecttype);
                    insList.append(ins, saveFrame(method, ins, count++, insFactory, frame));
                    invokeIns.addElement(rList.getStart());
                    restorer.append(rList);
                }    
                // remove all new's               
                if (ins.getInstruction().getOpcode() == Constants.NEW) {
                    try {
                        // remove additional dup's
                        while (next != null && next.getInstruction().getOpcode() == Constants.DUP) {
                            context = cfg.contextOf(next);
                            frame = context.getOutFrame(new ArrayList());
                            InstructionHandle newnext = next.getNext();
                            insList.delete(next);
                            next = newnext;
                        }
                        InstructionTargeter[] targeter = ins.getTargeters();
                        if (targeter != null) {
                            InstructionHandle newnext = ins.getNext();
                            for (int i = 0; i < targeter.length; i++) {
                                targeter[i].updateTarget(ins, newnext);
                            }
                        }
                        insList.delete(ins);
                    } catch (TargetLostException tle) {
                        throw new ClassNotFoundException(tle.getMessage(), tle);
                    }
                } else if (ins.getInstruction().getOpcode() == Constants.INVOKESPECIAL) {
                    // duplicate stack before invokespecial to insert uninitialized object
                    frame = context.getInFrame();
                    InvokeInstruction invoke = (InvokeInstruction)ins.getInstruction();
                    Type[] arguments = invoke.getArgumentTypes(method.getConstantPool());
   
                    OperandStack os = frame.getStack();
                    Type type = os.peek(arguments.length);
                    if (type instanceof UninitializedObjectType) {
                        ObjectType objecttype = ((UninitializedObjectType) type).getInitialized();
                        InstructionList duplicator = duplicateStack(method, invoke, objecttype);
                        InstructionTargeter[] targeter = ins.getTargeters();

                        if (targeter!=null) {
                            InstructionHandle newnext = duplicator.getStart();
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                }
                insList.append(insFactory.createInvoke(STACK_CLASS, getPopMethod(type), type, Type.NO_ARGS, Constants.INVOKEVIRTUAL));
                insList.append(InstructionFactory.createStore(type, i));
            } else if (type == null) {
                insList.append(new ACONST_NULL());
                insList.append(InstructionFactory.createStore(new ObjectType("<null object>"), i));
            } else if (type instanceof UninitializedObjectType) {
                // No uninitilaized objects should be found
                // in the local variables.
            } else if (type instanceof ReferenceType) {
                insList.append(InstructionFactory.createLoad(STACK_TYPE, method.getMaxLocals()+1));
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    }

    private ObjectType getObjectType(ConstantPool cp, int index) {
        ConstantCP cmr = (ConstantCP) cp.getConstant(index);
        String sig = cp.getConstantString(cmr.getClassIndex(), Constants.CONSTANT_Class);
        return new ObjectType(sig.replace('/', '.'));
    }
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                         InstConstraintVisitor icv, ExecutionVisitor ev) {
        // build the initial frame situation for this method.
        Frame vanillaFrame = new Frame(method.getMaxLocals(), method.getMaxStack());
        if (!method.isStatic()) {
            if (method.getName().equals(Constants.CONSTRUCTOR_NAME)) {
                Frame._this = new UninitializedObjectType(new ObjectType(clazz.getClassName()));
                vanillaFrame.getLocals().set(0, new UninitializedObjectType(new ObjectType(clazz.getClassName())));
            } else {
                Frame._this = null;
                vanillaFrame.getLocals().set(0, new ObjectType(clazz.getClassName()));
            }
        }
        // fill local variables with parameter types
        Type[] argtypes = method.getArgumentTypes();
        int twoslotoffset = 0;
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                    // Add frame saver and restorer for the current breakpoint

                    // determine type of object for the method invocation
                    InvokeInstruction invoke = (InvokeInstruction)ins.getInstruction();
                    Type[] arguments = invoke.getArgumentTypes(method.getConstantPool()); 
                    ObjectType objecttype = null;
                    if (!(invoke instanceof INVOKESTATIC)) {
                        objecttype = (ObjectType)context.getInFrame().getStack().peek(arguments.length);
                    }
                    InstructionList rList = restoreFrame(method, ins, insFactory, frame, objecttype);
                    insList.append(ins, saveFrame(method, ins, count++, insFactory, frame));
                    invokeIns.addElement(rList.getStart());
                    restorer.append(rList);
                }    
                // remove all new's               
                if (ins.getInstruction().getOpcode() == Constants.NEW) {
                    try {
                        // remove additional dup's
                        while (next != null && next.getInstruction().getOpcode() == Constants.DUP) {
                            context = cfg.contextOf(next);
                            frame = context.getOutFrame(new ArrayList());
                            InstructionHandle newnext = next.getNext();
                            insList.delete(next);
                            next = newnext;
                        }
                        InstructionTargeter[] targeter = ins.getTargeters();
                        if (targeter != null) {
                            InstructionHandle newnext = ins.getNext();
                            for (int i = 0; i < targeter.length; i++) {
                                targeter[i].updateTarget(ins, newnext);
                            }
                        }
                        insList.delete(ins);
                    } catch (TargetLostException tle) {
                        throw new ClassNotFoundException(tle.getMessage(), tle);
                    }
                } else if (ins.getInstruction().getOpcode() == Constants.INVOKESPECIAL) {
                    // duplicate stack before invokespecial to insert uninitialized object
                    frame = context.getInFrame();
                    InvokeInstruction invoke = (InvokeInstruction)ins.getInstruction();
                    Type[] arguments = invoke.getArgumentTypes(method.getConstantPool());
   
                    OperandStack os = frame.getStack();
                    Type type = os.peek(arguments.length);
                    if (type instanceof UninitializedObjectType) {
                        ObjectType objecttype = ((UninitializedObjectType) type).getInitialized();
                        InstructionList duplicator = duplicateStack(method, invoke, objecttype);
                        InstructionTargeter[] targeter = ins.getTargeters();

                        if (targeter!=null) {
                            InstructionHandle newnext = duplicator.getStart();
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