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

org.objectweb.asm.CodeVisitor.visitVarInsn()
Visits a local variable instruction. A local variable instruction is an instruction that loads or stores the value of a local variable. @param opcode the opcode of the local variable instruction to be visited.This opcode is either ILOAD, LLOAD, FLOAD, DLOAD, ALOAD, ISTORE, LSTORE, FSTORE, DSTORE, ASTORE or RET. @param var the operand of the instruction to be visited. This operand isthe index of a local variable.

        mv = cv.visitMethod(ACC_PUBLIC, "jdoIsDirty", "()Z", null, null);
        
        generateReturnFalseIfNotIsActive(mv);
        
        //StateItf sa = speedoGetState();
        mv.visitVarInsn(ALOAD, 0);
        mv.visitMethodInsn(INVOKEVIRTUAL, classToWrite, M_SPEEDO_GET_STATE, "()" + JT_STATE);
        mv.visitVarInsn(ASTORE, 1);


        //if (sa == null) {
        //    return false;

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        generateReturnFalseIfNotIsActive(mv);
        
        //StateItf sa = speedoGetState();
        mv.visitVarInsn(ALOAD, 0);
        mv.visitMethodInsn(INVOKEVIRTUAL, classToWrite, M_SPEEDO_GET_STATE, "()" + JT_STATE);
        mv.visitVarInsn(ASTORE, 1);


        //if (sa == null) {
        //    return false;
        //}
        mv.visitVarInsn(ALOAD, 1);

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        mv.visitVarInsn(ASTORE, 1);


        //if (sa == null) {
        //    return false;
        //}
        mv.visitVarInsn(ALOAD, 1);
        Label l4 = new Label();
        mv.visitJumpInsn(IFNONNULL, l4);
        mv.visitInsn(ICONST_0);
        mv.visitInsn(IRETURN);
        mv.visitLabel(l4);

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        mv.visitInsn(ICONST_0);
        mv.visitInsn(IRETURN);
        mv.visitLabel(l4);


        //byte status = sa.jdoGetStatus();
        mv.visitVarInsn(ALOAD, 1);
        mv.visitMethodInsn(INVOKEINTERFACE, JCN_STATE, M_SPEEDO_GET_STATUS, "()B");
        mv.visitVarInsn(ISTORE, 2);


        //return !LifeCycle.isTransient(status) && LifeCycle.isDirty(status);
        mv.visitVarInsn(ILOAD, 2);

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        mv.visitLabel(l4);


        //byte status = sa.jdoGetStatus();
        mv.visitVarInsn(ALOAD, 1);
        mv.visitMethodInsn(INVOKEINTERFACE, JCN_STATE, M_SPEEDO_GET_STATUS, "()B");
        mv.visitVarInsn(ISTORE, 2);


        //return !LifeCycle.isTransient(status) && LifeCycle.isDirty(status);
        mv.visitVarInsn(ILOAD, 2);
        mv.visitMethodInsn(INVOKESTATIC, JCN_LIFE_CYCLE, "isTransient", "(B)Z");
        Label l7 = new Label();

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        mv.visitVarInsn(ALOAD, 1);
        mv.visitMethodInsn(INVOKEINTERFACE, JCN_STATE, M_SPEEDO_GET_STATUS, "()B");
        mv.visitVarInsn(ISTORE, 2);


        //return !LifeCycle.isTransient(status) && LifeCycle.isDirty(status);
        mv.visitVarInsn(ILOAD, 2);
        mv.visitMethodInsn(INVOKESTATIC, JCN_LIFE_CYCLE, "isTransient", "(B)Z");
        Label l7 = new Label();
        mv.visitJumpInsn(IFNE, l7);


        mv.visitVarInsn(ILOAD, 2);

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        mv.visitVarInsn(ILOAD, 2);
        mv.visitMethodInsn(INVOKESTATIC, JCN_LIFE_CYCLE, "isTransient", "(B)Z");
        Label l7 = new Label();
        mv.visitJumpInsn(IFNE, l7);


        mv.visitVarInsn(ILOAD, 2);
        mv.visitMethodInsn(INVOKESTATIC, JCN_LIFE_CYCLE, "isDirty", "(B)Z");
        mv.visitJumpInsn(IFEQ, l7);
        
        mv.visitInsn(ICONST_1);
        Label l8 = new Label();

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        CodeVisitor mv;
        mv = cv.visitMethod(ACC_PUBLIC, "jdoIsTransactional", "()Z", null, null);
        generateReturnFalseIfNotIsActive(mv);
        
        //StateItf sa = speedoGetState();
        mv.visitVarInsn(ALOAD, 0);
        mv.visitMethodInsn(INVOKEVIRTUAL, classToWrite, M_SPEEDO_GET_STATE, "()" + JT_STATE);
        mv.visitVarInsn(ASTORE, 1);


        //if (sa == null) {
        //    return false;

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        generateReturnFalseIfNotIsActive(mv);
        
        //StateItf sa = speedoGetState();
        mv.visitVarInsn(ALOAD, 0);
        mv.visitMethodInsn(INVOKEVIRTUAL, classToWrite, M_SPEEDO_GET_STATE, "()" + JT_STATE);
        mv.visitVarInsn(ASTORE, 1);


        //if (sa == null) {
        //    return false;
        //}
        mv.visitVarInsn(ALOAD, 1);

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        mv.visitVarInsn(ASTORE, 1);


        //if (sa == null) {
        //    return false;
        //}
        mv.visitVarInsn(ALOAD, 1);
        Label l4 = new Label();
        mv.visitJumpInsn(IFNONNULL, l4);
        mv.visitInsn(ICONST_0);
        mv.visitInsn(IRETURN);
        mv.visitLabel(l4);

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