Re: concatenating string into $$

[Tom Jackson]

On Sat, 2004-02-28 at 03:17, Hans Aberg wrote:

> The problem is that you do not tell how you hook up your lexer: A lot of
> people forget copying the token that the Flex lexer identifies in its
> buffer. A single Bison parser rule will typically call the lexer several
> times before proceeding to the action. Thus, without copying, one gets
> funny answers.
> 
> If all your tokens and variables make a printout, and your lexer is
> correctly hooked up, you may simply write
>    ifcmd:
>        IFCMD ARGUMENT ENDCMD statements ENDIF {
>          sprintf($$,"if %s then %s", $2, $4);
>        }
> And so forth.

Hmm, I think I'm getting what you are saying. Right now the lexer is
reading stuff like [if $a]a[/if] or [set a "b"], etc. So the yytext is
different than what I would print, but I could substitute the yytext I
guess and simplify my parser. 

So in the above, I'm guessing, if the yytext for ENDIF were '}' it
wouldn't need to be handled explicitly by the parser?

Thanks for the pointers, I knew this must be easier than I was making
it, assuming I set things up correctly.

I also got the if-elseif, etc working, I'll go back to my simplified
code and try out these ideas.

tom jackson