Horst Keller

April 10, 2015 Less than a 1 minute read

ABAP Obfuscation Riddle

Tobias Trapp wants to start an ABAP obfuscation contest.

For warming up a small riddle:

INCLUDE

NOT. IF
NOT NOT NOT NOT NOT NOT NOT NOT NOT
NOT NOT !NOT OR NOT NOT NOT NOT NOT
NOT NOT NOT NOT NOT NOT NOT NOT NOT
NOT NOT NOT=>NOT( NOT ) OR NOT NOT NOT
NOT NOT NOT NOT NOT NOT !NOT … NOT.

This program is syntactically correct (as of 7.40, SP08).

Now tell me how that?

12 Comments

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Christian Guenter

April 10, 2015 at 7:33 am

*&---------------------------------------------------------------*

*& Include          NOT

*&---------------------------------------------------------------*

DATA: number TYPE i.

SELECT-OPTIONS: not FOR number NO-DISPLAY.

DEFINE not.

endif.

END-OF-DEFINITION.

CLASS not DEFINITION.

PUBLIC SECTION.

    CLASS-METHODS: not

      IMPORTING i_not        TYPE any

      RETURNING VALUE(r_not) TYPE abap_bool.

ENDCLASS.

CLASS not IMPLEMENTATION.

METHOD not.

ENDMETHOD.

ENDCLASS.

START-OF-SELECTION.

Horst Keller

Blog Post Author

April 10, 2015 at 7:38 am

Correct answer, that was (too) fast 😉

Nikolay Evstigneev

April 10, 2015 at 7:45 am

Oh, man, I'm just several minutes late.

It's funny that omitting variable and parameters names I came to exactly the same text =)

!NOT was the most difficult part for me, another is done in about 10 minutes.

P.S. Horst, there were not less than 4 versions of the task 🙂

Horst Keller

Blog Post Author

April 10, 2015 at 7:49 am

!NOT was the most difficult part

Yep, a pity that I had to place the ! in front of it. Otherwise ...

BTW, In my include I have also the REPORT statement.

Nikolay Evstigneev

April 10, 2015 at 7:57 am

Yep, a pity that I had to place the ! in front of it. Otherwise ...

No, it was the only part that made me wake up 🙂
Otherwise it would be easy.

I think, REPORT is not the main point, I had it in the main program.

Custodio de Oliveira

April 10, 2015 at 7:54 am

Not sure if I'm more impressed by the problem or by the absurdly quick solution.

Dominik Di Lorenzo

April 10, 2015 at 10:26 am

Hello Horst,

somehow when looking at your source code the BF programming language came into my mind 🙂

Brainfuck - Wikipedia, the free encyclopedia

Best regards,

Dominik

Nikolay Evstigneev

April 10, 2015 at 10:53 am

BF for kiddies, Malbolge rules! 😆

Tobias Trapp

April 10, 2015 at 1:06 pm

I really love it 🙂

Perhaps you should start the contest - and the winner gets a price - maybe a one of your book Official ABAP Programming Guidelines. von Horst Keller, Wolf Hagen Thümmel or a meeting with the ABAP language group to discuss new features of ABAP language.

Cheers,

Tobias

Nikolay Evstigneev

April 10, 2015 at 1:15 pm

Let the battle begin 🙂

Christian Guenter

April 10, 2015 at 1:26 pm

great idea 😆

Horst Keller

Blog Post Author

April 10, 2015 at 5:31 pm

Nice try ...

ABAP Obfuscation Riddle

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