[ragel-users] Re: can't pull parse strings - BUG?

[Adrian Thurston]

Hi,

The variable "act" is needed by scanners when they must backtrack to the
last matched rule and the rule cannot be determined statically. You can just
add "int act;" alongside tokstart et al. Section 2.7 of the manual will help
you out.

Cheers,
 Adrian

Jason wrote:
> Great! Strings now work.
> 
> However :-(
> 
> I added in rules to distinguish between integers and floats (reals).
> 
> 	# Numbers
> 	digit+ => {
> 		ret_tok (TK_Integer); fbreak;
> 	};
> 
> 	digit+'.' digit+ => {
> 		ret_tok (TK_Real); fbreak;
> 	};
> 
> Those were OK but I also want to recognize numbers separated by commas
> (e.g. 1,299 and 1,299.987).
> 
> So I added these rules
> 
> 	digit{1,3} (',' digit{3})+ {
> 		ret_tok (TK_Integer); fbreak;
> 	};
> and
> 	digit{1,3} (',' digit{3})+ '.' digit+ {
> 		ret_tok (TK_Real); fbreak;
> 	};
> 
> But this reports the following error:
> 
> ragel pullscan.rl | rlcodegen -G2 -o pullscan.c
> gcc -pedantic -Wall -O3 -g -c -o pullscan.o pullscan.c
> pullscan.rl: In function 'scan':
> pullscan.rl:1: error: 'act' undeclared (first use in this function)
> pullscan.rl:1: error: (Each undeclared identifier is reported only
> once
> pullscan.rl:1: error: for each function it appears in.)
> make: *** [pullscan.o] Error 1
> 
> Any ideas?
> 
> thanks,
> Jason
> 
> 
>