Re: parser stack overflow

[Valter G. Nogueira Jr.]

I am a newbie, but I believe that you must implement your rules as left
recursive:

frame: FRAME other
| frame FRAME other
;

Valter

----- Original Message -----
From: "Nosnos" <address@hidden>
To: <address@hidden>
Sent: Thursday, November 27, 2003 9:37 AM
Subject: parser stack overflow


> hi,
>
> I must make a real time parser/lexer (bison/flex), that lex/parse the
stdin stream.
>
> The parser must work in continuous without stoping.
>
> My first rule was something like that :
>
> frame : FRAME other frame
>       | FRAME other
>       ;
>
> other : [...]
>
>
> Of course, i get a stack overflow.
>
> So i want to know how to prevent this ? :
>
> - Maybe with a better set of rules, but I don't know how (precision my
file come from a sniffer, so the file contains lot a part separate by the
work frame).
> - I thought about having a loop outside the parser that always called
yyparse ...
>   the starting rules will be so :
>   frame : FRAME other   { return 0;}
>         |               { ERROR ; return -1;}
>
> - ???
>
> Is the second solution a possible way ?
> Have you other better suggestion ?
>
> thx a lot
>
>
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>