Re: Annotations in PHP7

On Mon, Feb 16, 2015 at 1:17 PM, Pavel Kouřil <pajousek@gmail.com> 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 > > > > 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. > > Hello, > > I'd personally suggest you to consider that the Annotations could be > classes, something along the lines of > > > https://msdn.microsoft.com/en-us/library/aa288454%28v=vs.71%29.aspx#vcwlkattributestutorialanchor1 > > IMHO it will allow for more usecases and such than simple arrays. > They are statements, so you can do whatever. Dimitri just showed scalars, but it would be possible to do: <orm(new Entity(["repositoryClass" => "FooRepository"]))> And then getAnnotations returns something along the lines if evaluated by the PHP Parser: "orm" => [new Entity(....), ] So your requirement would be possible. > > Regards > Pavel Kouril > > -- > PHP Internals - PHP Runtime Development Mailing List > To unsubscribe, visit: http://www.php.net/unsub.php > >