Examples of org.objectweb.asm.commons.GeneratorAdapter.ifNonNull()

Class org.objectweb.asm.commons.GeneratorAdapter

Examples of org.objectweb.asm.commons.GeneratorAdapter.ifNonNull()

org.objectweb.asm.commons.GeneratorAdapter.ifNonNull()
Generates the instruction to jump to the given label if the top stack value is not null. @param label where to jump if the condition is true.

        // to test if the handler is initialized...


        if (md.isImplemented()) {
            ga.dup();
            Label ok = ga.newLabel();
            ga.ifNonNull(ok);


            ga.loadThis();
            ga.loadArgs();
            ga.invokeConstructor(superType, m);
            ga.returnValue();

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    // make a label for return true
    Label returnTrueLabel = methodAdapter.newLabel();
    // get the dispatcher field for the stack
    methodAdapter.getField(typeBeingWoven, DISPATCHER_FIELD, DISPATCHER_TYPE);
    // check if the dispatcher was non-null and goto return true if it was
    methodAdapter.ifNonNull(returnTrueLabel);
    methodAdapter.loadThis();
    // get the listener field for the stack
    methodAdapter.getField(typeBeingWoven, LISTENER_FIELD, LISTENER_TYPE);
    // check if the listener field was non-null and goto return true if it was
    methodAdapter.ifNonNull(returnTrueLabel);

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    methodAdapter.ifNonNull(returnTrueLabel);
    methodAdapter.loadThis();
    // get the listener field for the stack
    methodAdapter.getField(typeBeingWoven, LISTENER_FIELD, LISTENER_TYPE);
    // check if the listener field was non-null and goto return true if it was
    methodAdapter.ifNonNull(returnTrueLabel);
    // return false if we haven't jumped anywhere
    methodAdapter.push(false);
    methodAdapter.returnValue();
    // mark the returnTrueLable
    methodAdapter.mark(returnTrueLabel);

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    }
    
    //Throw an NPE if the dispatcher is null, return otherwise
    methodAdapter.loadArg(0);
    Label returnValue = methodAdapter.newLabel();
    methodAdapter.ifNonNull(returnValue);
    methodAdapter.newInstance(NPE_TYPE);
    methodAdapter.dup();
    methodAdapter.push("The dispatcher must never be null!");
    methodAdapter.invokeConstructor(NPE_TYPE, NPE_CONSTRUCTOR);
    methodAdapter.throwException();

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        ga.invokeVirtual(Type.getType(IndyWrapper.class),
                org.objectweb.asm.commons.Method.getMethod("Object unwrap(Object[])"));
        ga.visitVarInsn(ASTORE, 2);
        ga.visitVarInsn(ALOAD, 2);
        Label l0 = new Label();
        ga.ifNonNull(l0);
        ga.visitInsn(ACONST_NULL);
        ga.returnValue();
        ga.visitLabel(l0);
        ga.visitVarInsn(ALOAD, 0);
        ga.visitVarInsn(ALOAD, 2);

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    // make a label for return true
    Label returnTrueLabel = methodAdapter.newLabel();
    // get the dispatcher field for the stack
    methodAdapter.getField(typeBeingWoven, DISPATCHER_FIELD, DISPATCHER_TYPE);
    // check if the dispatcher was non-null and goto return true if it was
    methodAdapter.ifNonNull(returnTrueLabel);
    methodAdapter.loadThis();
    // get the listener field for the stack
    methodAdapter.getField(typeBeingWoven, LISTENER_FIELD, LISTENER_TYPE);
    // check if the listener field was non-null and goto return true if it was
    methodAdapter.ifNonNull(returnTrueLabel);

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    methodAdapter.ifNonNull(returnTrueLabel);
    methodAdapter.loadThis();
    // get the listener field for the stack
    methodAdapter.getField(typeBeingWoven, LISTENER_FIELD, LISTENER_TYPE);
    // check if the listener field was non-null and goto return true if it was
    methodAdapter.ifNonNull(returnTrueLabel);
    // return false if we haven't jumped anywhere
    methodAdapter.push(false);
    methodAdapter.returnValue();
    // mark the returnTrueLable
    methodAdapter.mark(returnTrueLabel);

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    }
    
    //Throw an NPE if the dispatcher is null, return otherwise
    methodAdapter.loadArg(0);
    Label returnValue = methodAdapter.newLabel();
    methodAdapter.ifNonNull(returnValue);
    methodAdapter.newInstance(NPE_TYPE);
    methodAdapter.dup();
    methodAdapter.push("The dispatcher must never be null!");
    methodAdapter.invokeConstructor(NPE_TYPE, NPE_CONSTRUCTOR);
    methodAdapter.throwException();

View Full Code Here

        // to test if the handler is initialized...


        if (md.isImplemented()) {
            ga.dup();
            Label ok = ga.newLabel();
            ga.ifNonNull(ok);


            ga.loadThis();
            ga.loadArgs();
            ga.invokeConstructor(superType, m);
            ga.returnValue();

View Full Code Here

        // to test if the handler is initialized...


        if (md.isImplemented()) {
            ga.dup();
            Label ok = ga.newLabel();
            ga.ifNonNull(ok);


            ga.loadThis();
            ga.loadArgs();
            ga.invokeConstructor(superType, m);
            ga.returnValue();

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