Examples of org.objectweb.asm.CodeVisitor.visitLabel()

org.objectweb.asm.CodeVisitor.visitLabel()
Visits a label. A label designates the instruction that will be visited just after it. @param label a {@link Label Label} object.


        cv.visitInsn(Constants.ARETURN);


        cv.visitLabel(labels.handlerLabel);
        cv.visitVarInsn(Constants.ASTORE, 2);
        cv.visitLabel(labels.endLabel);
        cv.visitVarInsn(Constants.ALOAD, 0);
        cv.visitInsn(Constants.ICONST_M1);
        cv.visitFieldInsn(Constants.PUTFIELD, className, STACKFRAME_FIELD_NAME, I);
        cv.visitVarInsn(Constants.ALOAD, 2);
        cv.visitInsn(Constants.ATHROW);

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        cv.visitFieldInsn(GETSTATIC, m_className, INSTANCE_CFLOW_FIELD_NAME, ABSTRACT_CFLOW_SIGNATURE);
        cv.visitJumpInsn(IFNULL, isNull);
        cv.visitFieldInsn(GETSTATIC, m_className, INSTANCE_CFLOW_FIELD_NAME, ABSTRACT_CFLOW_SIGNATURE);
        cv.visitMethodInsn(INVOKEVIRTUAL, ABSTRACT_CFLOW_CLASS, IN_CFLOW_METOD_NAME, IN_CFLOW_METOD_SIGNATURE);
        cv.visitInsn(IRETURN);
        cv.visitLabel(isNull);
        cv.visitInsn(ICONST_0);
        cv.visitInsn(IRETURN);
        cv.visitMaxs(0, 0);


        // static isInCflowBelow() delegators

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        cv.visitFieldInsn(GETSTATIC, m_className, INSTANCE_CFLOW_FIELD_NAME, ABSTRACT_CFLOW_SIGNATURE);
        cv.visitJumpInsn(IFNULL, isNull2);
        cv.visitFieldInsn(GETSTATIC, m_className, INSTANCE_CFLOW_FIELD_NAME, ABSTRACT_CFLOW_SIGNATURE);
        cv.visitMethodInsn(INVOKEVIRTUAL, ABSTRACT_CFLOW_CLASS, IN_CFLOWBELOW_METOD_NAME, IN_CFLOWBELOW_METOD_SIGNATURE);
        cv.visitInsn(IRETURN);
        cv.visitLabel(isNull2);
        cv.visitInsn(ICONST_0);
        cv.visitInsn(IRETURN);
        cv.visitMaxs(0, 0);


        m_cw.visitEnd();

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        cv.visitFieldInsn(GETFIELD, joinPointClassName, STACK_FRAME_FIELD_NAME, I);
        cv.visitLookupSwitchInsn(defaultCaseLabel, caseNumbers, caseLabels);


        // add one case for each around advice invocation
        for (int i = 0; i < aroundAdvice.length; i++) {
            cv.visitLabel(caseLabels[i]);


            // gather advice info
            AdviceInfo adviceInfo = aroundAdvice[i];
            AspectContainer container = adviceInfo.getAspectManager().getAspectContainer(adviceInfo.getAspectIndex());
            Method adviceMethod = container.getAdvice(adviceInfo.getMethodIndex());

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                    aspectClassName,
                    adviceMethod.getName(),
                    Type.getMethodDescriptor(adviceMethod));


            cv.visitVarInsn(ASTORE, 1);
            cv.visitLabel(returnLabels[i]);


            decrementStackFrameCounter(cv, joinPointClassName);


            cv.visitVarInsn(ALOAD, 1);
            cv.visitInsn(ARETURN);

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            cv.visitVarInsn(ALOAD, 1);
            cv.visitInsn(ARETURN);
        }


        // invoke the target join point in the default case
        cv.visitLabel(defaultCaseLabel);
        AsmHelper.prepareWrappingOfPrimitiveType(cv, Type.getReturnType(calleeMemberSignature));


        createJoinPointInvocation(cv,
                joinPointType,
                calleeMemberName,

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                fieldNames);


        AsmHelper.wrapPrimitiveType(cv, Type.getReturnType(calleeMemberSignature));
        cv.visitVarInsn(ASTORE, 1);


        cv.visitLabel(gotoLabel);


        decrementStackFrameCounter(cv, joinPointClassName);
        cv.visitVarInsn(ALOAD, 1);
        cv.visitInsn(ARETURN);

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        decrementStackFrameCounter(cv, joinPointClassName);
        cv.visitVarInsn(ALOAD, 1);
        cv.visitInsn(ARETURN);


        // finally clause
        cv.visitLabel(handlerLabel);
        cv.visitVarInsn(ASTORE, 2);
        cv.visitLabel(endLabel);


        decrementStackFrameCounter(cv, joinPointClassName);
        cv.visitVarInsn(ALOAD, 2);

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        cv.visitInsn(ARETURN);


        // finally clause
        cv.visitLabel(handlerLabel);
        cv.visitVarInsn(ASTORE, 2);
        cv.visitLabel(endLabel);


        decrementStackFrameCounter(cv, joinPointClassName);
        cv.visitVarInsn(ALOAD, 2);
        cv.visitInsn(ATHROW);

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                                                final AdviceInfo[] afterAdvices) {


        CodeVisitor cv = cw.visitMethod(ACC_STATIC, CLINIT_METHOD_NAME, NO_PARAM_RETURN_VOID_SIGNATURE, null, null);


        Label l0 = new Label();
        cv.visitLabel(l0);
        cv.visitLdcInsn(calleeClassName.replace('/', '.'));
        cv.visitMethodInsn(INVOKESTATIC, CLASS_CLASS, FOR_NAME_METHOD_NAME, FOR_NAME_METHOD_SIGNATURE);
        cv.visitFieldInsn(PUTSTATIC, joinPointClassName, TARGET_CLASS_FIELD_NAME, CLASS_CLASS_SIGNATURE);
        Label l1 = new Label();
        cv.visitLabel(l1);

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