[antlr-interest] antlr-interest Digest, Vol 50, Issue 24
Bill Cox
bill at qswtools.com
Fri Jan 23 12:29:48 PST 2009
Re: preprocessing an ANTLR grammar
I've been able to use the GNU C preprocessor for a Pascal compiler in the past.
As you imply, the difficulty is in turning OFF all the C-specific stuff:
You can use -D and -U to set/unset variables
You should use:
-nostdinc suppress looking for std libs
-P inhibit c-specific line-number tracking lines from output
-C do not discard comments
I haven't done this in a long while. Here's the reference:
http://gcc.gnu.org/onlinedocs/gcc-4.3.2/gcc/Preprocessor-Options.html#Preprocessor-Options
>>>>> I need to generate C and Java from an ANTLR grammar containing
>>>>> actions. Is there a preprocessor approach I can use rather than
>>>>> maintaining two versions of the grammar?
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