Package org.jboss.classfilewriter.code

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

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        } else {
            loadBeanInstance(classMethod.getClassFile(), methodInfo, b);
        }
        //now we should have the target bean instance on top of the stack
        // we need to dup it so we still have it to compare to the return value
        b.dup();

        //lets create the method invocation
        String methodDescriptor = methodInfo.getDescriptor();
        b.loadMethodParameters();
        if (method.getDeclaringClass().isInterface()) {
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        //add the bytecode to load the cached fields in the static constructor
        CodeAttribute ca = staticConstructor.getCodeAttribute();
        ca.getstatic(MethodStore.class.getName(), "METHODS", "Ljava/util/Map;");
        ca.newInstruction(ClassIdentifier.class);
        ca.dup();
        ca.ldc(classFile.getName());
        ca.loadClass(classFile.getName());
        ca.invokevirtual("java.lang.Class", "getClassLoader", "()Ljava/lang/ClassLoader;");
        ca.invokespecial(ClassIdentifier.class.getName(), "<init>", "(Ljava/lang/String;Ljava/lang/ClassLoader;)V");
        ca.invokeinterface(Map.class.getName(), "remove", "(Ljava/lang/Object;)Ljava/lang/Object;");
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        ca.invokevirtual("java.lang.Class", "getClassLoader", "()Ljava/lang/ClassLoader;");
        ca.invokespecial(ClassIdentifier.class.getName(), "<init>", "(Ljava/lang/String;Ljava/lang/ClassLoader;)V");
        ca.invokeinterface(Map.class.getName(), "remove", "(Ljava/lang/Object;)Ljava/lang/Object;");
        ca.checkcast("[Ljava/lang/reflect/Method;");
        for (int i = 0; i < identifierCount; ++i) {
            ca.dup();
            ca.ldc(i);
            ca.aaload();
            ca.putstatic(getClassName(), METHOD_FIELD_PREFIX + i, METHOD_FIELD_DESCRIPTOR);
        }
    }
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            String[] params = method.getParameters();
            ca.iconst(params.length);
            ca.anewarray("java/lang/Object");
            int loadPosition = 1;
            for (int i = 0; i < params.length; ++i) {
                ca.dup();
                ca.iconst(i);
                String type = params[i];
                if (type.length() == 1) { // primitive
                    char typeChar = type.charAt(0);
                    switch (typeChar) {
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        @Override
        public void overrideMethod(ClassMethod method, Method superclassMethod) {
            // superClassMethod will be null
            CodeAttribute ca = method.getCodeAttribute();
            ca.newInstruction(serializableProxyClass.getName());
            ca.dup();
            ca.invokespecial(serializableProxyClass.getName(), "<init>", "()V");
            ca.dup();
            ca.aload(0);
            ca.invokeinterface(SerializableProxy.class.getName(), "setProxyInstance", "(Ljava/lang/Object;)V");
            ca.returnInstruction();
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            // superClassMethod will be null
            CodeAttribute ca = method.getCodeAttribute();
            ca.newInstruction(serializableProxyClass.getName());
            ca.dup();
            ca.invokespecial(serializableProxyClass.getName(), "<init>", "()V");
            ca.dup();
            ca.aload(0);
            ca.invokeinterface(SerializableProxy.class.getName(), "setProxyInstance", "(Ljava/lang/Object;)V");
            ca.returnInstruction();
        }
    }
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            ca.ifEq(loopBegin);
            // load the method parameters
            Class<?>[] parameters = methodToLoad.getParameterTypes();
            ca.aload(2);
            ca.invokevirtual("java.lang.reflect.Method", "getParameterTypes", "()[Ljava/lang/Class;");
            ca.dup();
            ca.astore(3);
            ca.arraylength();
            ca.iconst(parameters.length);
            ca.ifIcmpne(loopBegin); // compare parameter array length
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            // throw runtime exception as we could not find the method.
            // this will only happen if the proxy isloaded into the wrong classloader
            ca.branchEnd(loopEnd);
            ca.newInstruction("java.lang.RuntimeException");
            ca.dup();
            ca.ldc("Could not find method " + methodToLoad);
            ca.invokespecial("java.lang.RuntimeException", "<init>", "(Ljava/lang/String;)V");
            ca.athrow();
            ca.branchEnd(gotoEnd);
            ca.pop();
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            String[] params = method.getParameters();
            ca.iconst(params.length);
            ca.anewarray("java/lang/Object");
            int loadPosition = 1;
            for (int i = 0; i < params.length; ++i) {
                ca.dup();
                ca.iconst(i);
                String type = params[i];
                if (type.length() == 1) { // primitive
                    char typeChar = type.charAt(0);
                    switch (typeChar) {
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        @Override
        public void overrideMethod(ClassMethod method, Method superclassMethod) {
            // superClassMethod will be null
            CodeAttribute ca = method.getCodeAttribute();
            ca.newInstruction(serializableProxyClass.getName());
            ca.dup();
            ca.invokespecial(serializableProxyClass.getName(), "<init>", "()V");
            ca.dup();
            ca.aload(0);
            ca.invokeinterface(SerializableProxy.class.getName(), "setProxyInstance", "(Ljava/lang/Object;)V");
            ca.returnInstruction();
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