RE: [PHP-DEV] [PATCH] allowing multiple namespaces per file plus namespaces with brackets

Greg, Will review your patch... Thanks, Andi > -----Original Message----- > From: Gregory Beaver [mailto:greg@chiaraquartet.net] > Sent: Monday, August 20, 2007 10:03 PM > To: Rasmus Lerdorf > Cc: internals Mailing List > Subject: Re: [PHP-DEV] [PATCH] allowing multiple namespaces per file > plus namespaces with brackets > > Rasmus Lerdorf wrote: > > Sheez, guys, slow down a tad. Just because he says "no performance > > penalty" in the description, doesn't make it true. Unless I missed > > something in the patch, I don't see how I would resolve the symbols > at > > compile-time now which means it has been moved to the executor and in > > doing so it implies a huge performance penalty. > > Hi Rasmus, > > I'm actually certain that the patch doesn't change any of the symbol > resolution logic or add any need to move things from the compile-time > to > the executor. This is because the namespace implementation basically > works more like a #define macro to auto-prepend class names and > function > names with namespace names. > > Old logic: > > request start => CG(namespace) = NULL > T_NAMESPACE ...; > zend_do_namespace() => defines CG(namespace) which is used for creating > class and function entries > php junk > compile end => if (CG(namespace)) destruct CG(namespace), CG(namespace) > = NULL > > New logic: > > request start => CG(namespace) = NULL > [potential php junk] > T_NAMESPACE ... { > zend_do_namespace() => defines CG(namespace) which is used for creating > class and function entries > php junk > } > zend_do_end_namespace() => destruct CG(namespace), CG(namespace) = NULL > php junk (which can include class/function entries, although that's a > terrible idea) > T_NAMESPACE ... { > zend_do_namespace() => defines CG(namespace) which is used for creating > class and function entries > php junk > } > zend_do_end_namespace() => destruct CG(namespace), CG(namespace) = NULL > compile end => if (CG(namespace)) destruct CG(namespace), CG(namespace) > = NULL > > In other words, the only difference is that mid-parse the namespace > #define-like prefix can be modified or removed. > > Greg > > -- > PHP Internals - PHP Runtime Development Mailing List > To unsubscribe, visit: http://www.php.net/unsub.php