Package org.jboss.classfilewriter.code

Examples of org.jboss.classfilewriter.code.CodeAttribute.aload()

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        b.returnInstruction();
    }

    private static void generateSetMethodHandlerBody(ClassMethod method) {
        final CodeAttribute b = method.getCodeAttribute();
        b.aload(0);
        b.aload(1);
        b.putfield(method.getClassFile().getName(), METHOD_HANDLER_FIELD_NAME, DescriptorUtils.classToStringRepresentation(MethodHandler.class));
        b.returnInstruction();
    }
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    }

    private static void generateSetMethodHandlerBody(ClassMethod method) {
        final CodeAttribute b = method.getCodeAttribute();
        b.aload(0);
        b.aload(1);
        b.putfield(method.getClassFile().getName(), METHOD_HANDLER_FIELD_NAME, DescriptorUtils.classToStringRepresentation(MethodHandler.class));
        b.returnInstruction();
    }

    @Override
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     * methodHandler field as then new methodHandler
     */
    private void addHandlerInitializerMethod(ClassFile proxyClassType, ClassMethod staticConstructor) throws Exception {
        ClassMethod classMethod = proxyClassType.addMethod(AccessFlag.PRIVATE, INIT_MH_METHOD_NAME, DescriptorUtils.VOID_CLASS_DESCRIPTOR, LJAVA_LANG_OBJECT);
        final CodeAttribute b = classMethod.getCodeAttribute();
        b.aload(0);
        StaticMethodInformation methodInfo = new StaticMethodInformation(INIT_MH_METHOD_NAME, new Class[] { Object.class }, void.class,
                classMethod.getClassFile().getName());
        invokeMethodHandler(classMethod, methodInfo, false, DEFAULT_METHOD_RESOLVER, staticConstructor);
        b.checkcast(MethodHandler.class);
        b.putfield(classMethod.getClassFile().getName(), METHOD_HANDLER_FIELD_NAME, DescriptorUtils.classToStringRepresentation(MethodHandler.class));
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    private void createAbstractMethodCode(ClassMethod classMethod, MethodInformation method, ClassMethod staticConstructor) {
        if ((delegateField != null) && (!Modifier.isPrivate(delegateField.getModifiers()))) {
            // Call the corresponding method directly on the delegate
            final CodeAttribute b = classMethod.getCodeAttribute();
            // load the delegate field
            b.aload(0);
            b.getfield(classMethod.getClassFile().getName(), delegateField.getName(), DescriptorUtils.classToStringRepresentation(delegateField.getType()));
            // load the parameters
            b.loadMethodParameters();
            // invoke the delegate method
            b.invokeinterface(delegateField.getType().getName(), method.getName(), method.getDescriptor());
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     */
    private void createDelegateInitializerCode(ClassMethod classMethod, MethodInformation initializerMethodInfo, int delegateParameterPosition) {
        final CodeAttribute b = classMethod.getCodeAttribute();
        // we need to push all the parameters on the stack to call the corresponding
        // superclass arguments
        b.aload(0); // load this
        int localVariables = 1;
        int actualDelegateParameterPosition = 0;
        for (int i = 0; i < initializerMethodInfo.getMethod().getParameterTypes().length; ++i) {
            if (i == delegateParameterPosition) {
                // figure out the actual position of the delegate in the local
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        b.invokespecial(classMethod.getClassFile().getSuperclass(), initializerMethodInfo.getName(), initializerMethodInfo.getDescriptor());
        // if this method returns a value it is now sitting on top of the stack
        // we will leave it there are return it later

        // now we need to call _initMH
        b.aload(0); // load this
        b.aload(actualDelegateParameterPosition); // load the delegate
        b.invokevirtual(classMethod.getClassFile().getName(), INIT_MH_METHOD_NAME, "(" + LJAVA_LANG_OBJECT + ")" + DescriptorUtils.VOID_CLASS_DESCRIPTOR);
        // return the object from the top of the stack that we got from calling
        // the superclass method earlier
        b.returnInstruction();
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        // if this method returns a value it is now sitting on top of the stack
        // we will leave it there are return it later

        // now we need to call _initMH
        b.aload(0); // load this
        b.aload(actualDelegateParameterPosition); // load the delegate
        b.invokevirtual(classMethod.getClassFile().getName(), INIT_MH_METHOD_NAME, "(" + LJAVA_LANG_OBJECT + ")" + DescriptorUtils.VOID_CLASS_DESCRIPTOR);
        // return the object from the top of the stack that we got from calling
        // the superclass method earlier
        b.returnInstruction();
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            // we need to generate a constructor with a single invokespecial call
            // to the super constructor
            // to do this we need to push all the arguments on the stack first
            // local variables is the number of parameters +1 for this
            // if some of the parameters are wide this may go up.
            b.aload(0);
            b.loadMethodParameters();
            // now we have the parameters on the stack
            b.invokespecial(file.getSuperclass(), initMethodName, DescriptorUtils.getMethodDescriptor(params, returnType));
            if(!useUnsafeInstantiators) {
                // now set constructed to true
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            b.loadMethodParameters();
            // now we have the parameters on the stack
            b.invokespecial(file.getSuperclass(), initMethodName, DescriptorUtils.getMethodDescriptor(params, returnType));
            if(!useUnsafeInstantiators) {
                // now set constructed to true
                b.aload(0);
                b.iconst(1);
                b.putfield(file.getName(), ProxyFactory.CONSTRUCTED_FLAG_NAME, DescriptorUtils.BOOLEAN_CLASS_DESCRIPTOR);
            }
            b.returnInstruction();
        }  catch (DuplicateMemberException e) {
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        if(isUsingUnsafeInstantiators()) {
            return;
        }
        // now create the conditional
        final CodeAttribute cond = classMethod.getCodeAttribute();
        cond.aload(0);
        cond.getfield(classMethod.getClassFile().getName(), CONSTRUCTED_FLAG_NAME, DescriptorUtils.BOOLEAN_CLASS_DESCRIPTOR);

        // jump if the proxy constructor has finished
        BranchEnd jumpMarker = cond.ifne();
        // generate the invokespecial call to the super class method
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