By the way, you might want to have a look at
http://www.lysator.liu.se/c/ANSI-C-grammar-y.html
I don't know if it's different from what you are
working from, and I'm not sure how it does in Bison,
but it might be worth a try.
Kelly
--- Derek M Jones <[EMAIL PROTECTED]> wrote:
> All,
>
> The
Derek M Jones wrote:
> The statement (y)+z can be parsed as casting
> +z to the type y, or as adding y to z. A couple of
> %dprecs solve this problem (I think the cast is the
> common case for - and a binary expression for +).
What the "common case" is doesn't really matter since a correct
parse
> to
>
> add-expr:
> mul-expr|
> mult-expr '+' add-expr |
> mult-expr '-' add-expr ;
>
I don't think that's what you want if you're planning
on executing the code you generate from this...
This means that 3 - 4 + 4 = -5, rather
All,
The statement (y)+z can be parsed as casting
+z to the type y, or as adding y to z. A couple of
%dprecs solve this problem (I think the cast is the
common case for - and a binary expression for +).
However, things are more complicated for x + (y) + z,
whose parse tree can be either
