CODEWITHSUNDEEP
c++macrosc-preprocessor
metdos
metdos

Reputation: 13929

#define with space

Is it possible to write define with spaces such as:

#define replace to replacement here

I want to replace "replace to" with "replacement here".

EDIT:

I want to test private members:

I did write

#define private public

but it didn't work for private slots in Qt

so my intend was to use something like

#define private slots: public slots:

anyway I have found another way to test slots and by the way I'm aware of that this is an ugly hack.

Upvotes: 17

Views: 26303

Answers (5)

Armen Tsirunyan
Armen Tsirunyan

Reputation: 132994

no, you can't

#define identifier something

what you define must be an identifier which cannot contain space. Nor can it contain hyphen, begin with a number, etc. you can define only an identifier

what you wrote will work

#define replace to replacement here

but not as you expect. This line defined replace to be substituted with to replacement here

Upvotes: 18

L. Carlier
L. Carlier

Reputation: 305

If you are doing unit test, you can compile your file with the following flag

-Dprivate=public

Then in your unit test, you will be able to call every private method of your class.

EDIT:

I've recently remarked that using the -fno-access-control flag on gcc compiler allows you to access private method or member. More info on that topic can be found here: Unit testing with -fno-access-control

Upvotes: 3

Martin Stone
Martin Stone

Reputation: 13007

You could do...

#define replace replacement
#define to here

Watch out for unintended side effects of the defines. You would probably want to #undef them after they've done their job.

Upvotes: 7

Axel
Axel

Reputation: 14159

No, that's not possible. Why not just do this instead:

#define replace_to replacement here

Upvotes: 2

Marcus
Marcus

Reputation: 1715

probably not. It will understand that the first word after the define is the identifier name and the rest is the "body" of that.

Upvotes: -1

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