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Date: Tue, 17 Feb 2015 01:02:36 +0400
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To: Benjamin Eberlei <kontakt@beberlei.de>
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Content-Type: multipart/alternative; boundary=089e01628326e33d9e050f3ae731
Subject: Re: [PHP-DEV] Annotations in PHP7
From: dmitry@zend.com (Dmitry Stogov)

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On Mon, Feb 16, 2015 at 11:05 PM, Benjamin Eberlei <kontakt@beberlei.de>
wrote:

>
>
> On Mon, Feb 16, 2015 at 12:07 PM, Dmitry Stogov <dmitry@zend.com> wrote:
>
>> hi,
>>
>> During discussion of different ways of implementing "Design by Contract"
>> we
>> got an idea of using annotations.
>>
>> BTW: annotations are useful by their own and may be used for different
>> purposes. Support for annotations was proposed long time ago:
>>
>> https://wiki.php.net/rfc/annotations
>> https://wiki.php.net/rfc/annotations-in-docblock
>> https://wiki.php.net/rfc/reflection_doccomment_annotations
>>
>> HHVM already implemented similar concept
>>
>> http://docs.hhvm.com/manual/en/hack.attributes.php
>>
>> I made a quick and dirty PoC that shows how we may implement annotations
>> in
>> PHP7 and how powerful they may be :
>> https://gist.github.com/dstogov/dbf2a8f46e43719bd2c2
>
>
> How about not exposing the AST, and then the userland can pass context to
> a method $reflection->getAnnotation($name, $context);
>
> https://gist.github.com/beberlei/0dc36d4412b8e3454912
>
> That way AST is not exposed to userland.
>

Your example handles just particular use-case.
I would like to provide a general solution.

Thanks. Dmitry.


>
>>
>> The test there is self explainable. Of course, annotations just provide a
>> way to add metadata, but doesn't define attribute names or the ways they
>> are going to be used. Only Reflection API to read.
>>
>> There are still a lot of technical problems that have to be solved.
>> Right now, we just need to answer a question - if we like this in PHP7?
>> Thought and opinions are welcome...
>>
>> Thanks. Dmitry.
>>
>
>

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