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Subject: Re: [PHP-DEV] Please let's not bitch about lazy users not learning
 C to implement THEIR missing feature. (Was Re: [PHP-DEV] 5.4 again)
From: smalyshev@sugarcrm.com (Stas Malyshev)

Hi!

> Objects are only instantiated when requested (getAnnotations() or
> getAnnotation())

So how this happens - does the class store the text of the annotation? 
Or expressions in the call are evaluated and stored, but the object is 
not instantiated?
What if I call getAnnotation() repeatedly - are they re-instantiated or 
stored somewhere, and if so - where?

>> 2. What is permissible in the arguments of annotation - e.g. can I put any
>> expression there?
>
> You are allowed to use any scalar value + array + any object that
> implements ReflectionAnnotation interface.

By scalar value you mean constant value? Are constants allowed?

>> 3. What<Foo(<Bar>)>  actually means and how it is supposed to be parsed?
>
> It would instantiate a class Bar and would pass it as an instance of
> Foo that is also being created when doing getAnnotations() or
> getAnnotation('Foo')

So when exactly Bar is instantiated - when getAnnotations() is called?

>> 6. Do we need any special support for bytecode caches?
>
> Yes. Every structure which can be annotated now will have a new member
> in their C structure which is annotations, this structure is populated
> at compile time and store all the metadata information. So if you have
> an opcode cache the compilation will not occur, so the annotations
> will be NULL. That's why the opcode cache will have to store the
> annotations, so that it can be retrieved every time.

This then should be added to the proposal.

-- 
Stanislav Malyshev, Software Architect
SugarCRM: http://www.sugarcrm.com/
(408)454-6900 ext. 227