Re: yacc parser

[Wayne Green]

On Fri, 2004-04-09 at 13:47, Hans Aberg wrote:

> This is the Help-Bison list, and not a Yacc list, even though Bison is
> supposed to be Yacc compatible.

> >
> >"repeat  :REPEAT stmt_seq UNTIL exp"
> >

Hans suggests...

> This suggests that you want the parser to interpretatively step around in
> the input text. Not Bison nor Yacc is capable doing that, but reads the
> file just once. Thus, you need to build some code that can be executed
> after the parse. This results in a faster code, so this is what everybody
> is doing. For details, look into books on compiler construction; see for
> example the newsgroup comp.compilers, and its FAQ, published there monthly.
> 
>   Hans Aberg


I've worked with Yacc and Bison, (Not to mention my spam filter
is just a flex program) and prefer Bison/Flex to Yacc/Lex.
There are more examples in Bison these days, just download linux
distro and search for all the bison/flex examples in
the source code. Google the rest.

--Wayne



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