Newsgroups: php.internals
Path: news.php.net
Xref: news.php.net php.internals:104377
MIME-Version: 1.0
References: <CADqTB_i=Sc2fA9O9E2vEFfOrQMTvmwbt2J2CuBJ8OLPLV7kP7Q@mail.gmail.com>
In-Reply-To: <CADqTB_i=Sc2fA9O9E2vEFfOrQMTvmwbt2J2CuBJ8OLPLV7kP7Q@mail.gmail.com>
Date: Wed, 13 Feb 2019 09:16:13 +0100
Message-ID: <CAOwTYAuGS5i3J0wAtOrsSUZb0OZKHbyrGe=1KUdDYO167=mDKQ@mail.gmail.com>
To: Rasmus Schultz <rasmus@mindplay.dk>
Cc: PHP internals <internals@lists.php.net>
Content-Type: multipart/alternative; boundary="0000000000006a041c0581c22884"
Subject: Re: [PHP-DEV] proper anonymous classes?
From: krakjoe@gmail.com (Joe Watkins)

--0000000000006a041c0581c22884
Content-Type: text/plain; charset="UTF-8"

What you describe is first class support for classes, nothing much to do
with anonymous classes.

On Wed, 13 Feb 2019, 09:01 Rasmus Schultz <rasmus@mindplay.dk wrote:

> The fact that the anonymous class syntax defines a class *and* immediately
> constructs an instance is quite annoying.
>
> For one, this is quite incompatible with DI containers' ability to resolve
> constructor arguments.
>
> Lets say you DI container can register a named component by merely
> referencing a class that uses constructor injection - so lets say this
> works:
>
> class MyController {
>     public function __construct(MyService $service) {
>         // ...
>     }
> }
>
> $container->register("my-controller", MyController::class);
>
> Now I want to register an anonymous class, for example as part of an
> integration test-suite, which is common enough:
>
> $container->register("my-controller", new class {
>     public function __construct(MyService $service) {
>         // ...
>     }
> });
>
> This doesn't work, because you're expected to actually pass the constructor
> arguments immediately - because you can only define an anonymous class
> while immediately creating an instance.
>
> What I really want is just an anonymous class - not an instance, so:
>
> $container->register("my-controller", class {
>     public function __construct(MyService $service) {
>         // ...
>     }
> });
>
> The question is, what would a class expression without the new keyword
> evaluate to?
>
> Since we normally reference classes with just a class-name, I guess I'd
> expect a string, like you'd get from the ::class constant.
>
> Any hope for something like that?
>

--0000000000006a041c0581c22884--