On Sat, 11 May 2002 [EMAIL PROTECTED] wrote:
> On Sat, 11 May 2002, Yasuo Ohgaki wrote:
>
> [...]
>
> > IMHO, we need someone who documents language design....
>
> Actually, we need someone to finish this:
>
> http://cvs.php.net/cvs.php/php-lang
>
> regards,
> Derick
[ Please CC me on replies, I am only on php-dev ... or
should the be on dev, not doc? ]
I just took a look at this. I hadn't realized it existed,
and am glad it does. For me, reading the lang spec is
typically faster and easier than reading docs.
I noticed something about the spec that is different from
the language though. The following is valid code:
if ($bool):
endif;
True, its pointless code, but it parses and the lang spec
should reflect that. However (rev 1.8) of the spec says:
statement-list:
statement
statement-list statement
and as far as I can tell, none of the production rules for
<statement> can be empty. The closet one is expression
statement which can be just ";", but as you can see there
is no ";" in the <statement-list> for the <if-statement>
production above. The <statement-list> production should be
changed to:
statement-list:
/* empty */
statement-list statement
(or similar). Perhaps we could just generate a simple
syntax verifier from the rules using (f)lex, then we would
quickly be able to check cases like this.
-James
