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Date: Wed, 18 Feb 2015 11:02:32 +0400
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To: "guilhermeblanco@gmail.com" <guilhermeblanco@gmail.com>
Cc: francois <francois@php.net>, Alexander Lisachenko <lisachenko.it@gmail.com>, 
	Nikita Popov <nikita.ppv@gmail.com>, Benjamin Eberlei <kontakt@beberlei.de>, 
	PHP Internals <internals@lists.php.net>, Pierrick CHARRON <pierrick@webstart.fr>, 
	Pierre Joye <pierre.php@gmail.com>, Zeev Suraski <zeev@zend.com>, Andi Gutmans <andi@zend.com>, 
	Joe Watkins <pthreads@pthreads.org>, Yasuo Ohgaki <yohgaki@ohgaki.net>, 
	Sebastian Bergmann <sebastian@php.net>, Stanislav Malyshev <smalyshev@gmail.com>, 
	Rasmus Lerdorf <rasmus@lerdorf.com>
Content-Type: multipart/alternative; boundary=20cf3071c7c04439a5050f576739
Subject: Re: [PHP-DEV] Annotations in PHP7
From: dmitry@zend.com (Dmitry Stogov)

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On Wed, Feb 18, 2015 at 12:51 AM, guilhermeblanco@gmail.com <
guilhermeblanco@gmail.com> wrote:

> Fran=C3=A7ois,
>
> Doctrine relies on nested annotations for a variety of mapping informatio=
n.
> One example:
>
>
> http://doctrine-orm.readthedocs.org/en/latest/reference/association-mappi=
ng.html#one-to-many-unidirectional-with-join-table
>
>
Nested annotations are not going to be necessary, because they may be
represented by PHP pseudo-syntax (and/or PHP array syntax)

<Doctrine_Join(
    ManyToMany($targetEntity=3D"Phonenumber"),
    JoinTable($name=3D"users_phonenumbers",
        $joinColumns=3DJoinColumn($name=3D"user_id",
$referencedColumnName=3D"id"))
    inverseJoinColumns=3DJoinColumn($name=3D"phonenumber_id",
$referencedColumnName=3D"id", $unique=3Dtrue))>
class User {
   ...
}

$r =3D new ReflectionClass("User");
$ast =3D $r->getAnnotation("Doctine_Join");
echo $ast->child[0]->child[0]; // "ManyToMany"
echo $ast->child[0]->child[1]->child[0]->child[0]; // "$targetEntity"

or If we provide API similar to SimpleXML

echo $ast[0][0]; // "ManyToMany"
echo $ast[0][1][0][0]; // "$targetEntity"

Thanks. Dmitry.



> []s,
>
> On Tue, Feb 17, 2015 at 4:33 PM, Fran=C3=A7ois Laupretre <francois@php.ne=
t>
> wrote:
>
>> Hi Alexander,
>>
>> > De : Alexander Lisachenko [mailto:lisachenko.it@gmail.com]
>> >
>> > This RFC consists of two parts: parsing API and parser extension API.
>> Last
>> > one can be rejected, however it can be perfectly connected with
>> annotation
>> > RFC (if AST will be used as values)
>>
>> Parser extension API is great. Go on with it. I have a lot of uses in
>> mind.
>>
>> > As for annotations, general use-case is appreciated. This can be
>> extended
>> > later in future versions of PHP. Therefore, annotation syntax should
>> allow
>> > to define key and values. Value can be valid expression (AST? concrete
>> > node? compiled value?) or can recursively contain nested annotations.
>>
>> Can you give a use case for nested annotations ? I don't see what they
>> can be needed for.
>>
>> Thanks
>>
>> Fran=C3=A7ois
>>
>>
>>
>>
>
>
> --
> Guilherme Blanco
> MSN: guilhermeblanco@hotmail.com
> GTalk: guilhermeblanco
> Toronto - ON/Canada
>

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