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.


        invokeJoinPoint(joinPointType, system, declaringClass, joinPointHash, cv, className);


        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);

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        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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            final AdviceMethodInfo[] afterReturningAdvices,
            final AdviceMethodInfo[] afterThrowingAdvices) {
        CodeVisitor cv = cw.visitMethod(ACC_STATIC, CLINIT_METHOD_NAME, NO_PARAM_RETURN_VOID_SIGNATURE, null, null);


        Label tryLabel = new Label();
        cv.visitLabel(tryLabel);
        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 finallyLabel = new Label();

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        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 finallyLabel = new Label();
        cv.visitLabel(finallyLabel);


        Label gotoFinallyLabel = new Label();
        cv.visitJumpInsn(GOTO, gotoFinallyLabel);


        Label catchLabel = new Label();

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        Label gotoFinallyLabel = new Label();
        cv.visitJumpInsn(GOTO, gotoFinallyLabel);


        Label catchLabel = new Label();
        cv.visitLabel(catchLabel);
        cv.visitVarInsn(ASTORE, 0);
        cv.visitTypeInsn(NEW, RUNTIME_EXCEPTION_CLASS_NAME);
        cv.visitInsn(DUP);
        cv.visitLdcInsn("could not load target class using Class.forName() in generated join point base class");

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                INIT_METHOD_NAME,
                RUNTIME_EXCEPTION_INIT_METHOD_SIGNATURE
        );


        cv.visitInsn(ATHROW);
        cv.visitLabel(gotoFinallyLabel);


        // load the system
        cv.visitFieldInsn(GETSTATIC, joinPointClassName, TARGET_CLASS_FIELD_NAME, CLASS_CLASS_SIGNATURE);
        cv.visitMethodInsn(
                INVOKESTATIC,

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        for (int i = 0; i < returnLabels.length; i++) {
            returnLabels[i] = new Label();
        }


        // start try-catch block
        cv.visitLabel(tryLabel);


        // start the switch block and set the stackframe as the param to the switch
        cv.visitVarInsn(ALOAD, 0);
        cv.visitFieldInsn(GETFIELD, joinPointClassName, STACK_FRAME_FIELD_NAME, I);
        cv.visitLookupSwitchInsn(defaultCaseLabel, caseNumbers, caseLabels);

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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
            AdviceMethodInfo adviceInfo = aroundAdvice[i];


            // get the aspect instance

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

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