Re: set flex start conditions from bison?

[Akim Demaille]

Le 25 août 09 à 13:53, Rui Maciel a écrit :

> Akim Demaille wrote:
> > AFAIK, Flex does not generate a header file with its definitions such
> > as start conditions, so you probably need to write a small wrapper
> > around flex that extracts it from the generated scanner *.c file.
> > Then, from the grammar file, just include that extracted file from
> > like any other.
>
> Flex does generate a header file, which also holds the definitions  
> for the start
> conditions. You can try it out by running the following:
>
> flex --header-file=lex.yy.h test.l
>
>
> If you defined starting conditions on your test.l file then the  
> lex.yy.h will
> hold the definitions. Unfortunately they are enclosed in a #define  
> statement.

Can you show the content of this file?  Can you also show where you  
include it in your Bison file?  Maybe you include the flex header from  
the bison and vice versa, which probably does not work as expected.   
Usually you include the Bison header from the Flex scanner (to get the  
token definitions and so forth).  I have no experience with the  
converse.