Tool/Editor to interprete #if(Switch == ValueA) available ?

[Frank Miller]

Hello,

I have project written in C where are a lot of code looks like:

#define Vaule A 1
#define Value B 2
#define Value X 9

#define Switch ValueA

#if (Switch == ValueB)
code1
#endif

#if (Switch != ValueX)
code2
#endif


#defines are checked thousands of times within the whole project, this
makes the code nearly unreadable.

Ist there a tool or an editor out there which takes the current value
of the #defines and then copies
or shows only the part of the sourcecode, which is valid for the
current switch setting?
In my brief example above, it shold take/show only the code below #if
(Switch != ValueX)

This would it make much more easier to read the code.
I have to work on a project which has some dozends sourcecode files.

Many thanks for any hint!

Regards

Frank

 

[Eric Sosman]

Hello,

I have project written in C where are a lot of code looks like:

#define Vaule A 1
#define Value B 2
#define Value X 9

#define Switch ValueA

#if (Switch == ValueB)
code1
#endif

#if (Switch != ValueX)
code2
#endif


#defines are checked thousands of times within the whole project, this
makes the code nearly unreadable.

Ist there a tool or an editor out there which takes the current value
of the #defines and then copies
or shows only the part of the sourcecode, which is valid for the
current switch setting?
In my brief example above, it shold take/show only the code below #if
(Switch != ValueX)

This would it make much more easier to read the code.
I have to work on a project which has some dozends sourcecode files.

This isn't exactly Question 10.18 in the comp.lang.c
Frequently Asked Questions (FAQ) list <http://www.c-faq.com/>,
but it's close enough that the leads might be worth pursuing.
Also, the Gnu Emacs editor has a facility that's supposed to
do something like this. (The only time I tried to use it,
though, it got even more confused by the source's snarl of
conditionals than I was. Caveat emptor.)

 

[Frank Miller]

Hello Eric,

... Question 10.18 in the comp.lang.c

Thanks for your hint, the tools mentioned there may help me a lot.
But I was not able to find/download a Windows executable for unifdef,
rmifdef or scpp('selective C preprocessor').

Do you (or anybody else) know, where I can get this tools as
executable running under Windows XP OS?

Thanks for any hint!
Regards

Frank

 

[John Temples]

But I was not able to find/download a Windows executable for unifdef,
rmifdef or scpp('selective C preprocessor').

The last time I went down this road, none of the tools mentioned in
the C FAQ were useful. I did find a tool that worked perfectly,
though:

http://www.cs.washington.edu/homes/mernst/software/#cppp

 

[Richard Bos]

Semantic Designs has

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companies with such low morals.

Richard