Re: [Flex-help] search and substitute constants in C

[Ángel G. <an...@le...>]

El mié, 24-02-2016 a las 22:37 +0100, Roberto Valverde Cameselle
escribió:
> Hello to all, I’m new to flex and i wanted to know how to parse a C
> example file and when a #define statement is found, substitute all
> the instances of that constant with its value. For example:
> 
> <input file>
> 
> #define TRUE 1


Do you only care about "#define" NAME VALUE, or do you want to properly
parse full macros, too?

Also, I wonder if directly calling the C preprocessor (cpp / cc -E)
wouldn't solve your use case better than developing a new tool with
flex…