On Thu, Nov 6, 2014 at 3:49 PM, Andrea Faulds <a...@ajf.me> wrote:
> By merging the symbol tables, you could reference classes like constants
> (perhaps it’d return some sort of ReflectionClass-like thing?):
>
> $x = SomeClass;
> $foo = new $x;
>
> Currently, because SomeClass above would resolve to a constant, you have
> to use the weird pseudo-constant ::class:
>
> $x = SomeClass::class;
>
> It also would mean instanceof could accept arbitrary expressions, as
> there’d be no syntactic ambiguity:
>
> class Foo {}
> const Bar = ‘Foo';
> $x = (new Foo) instanceof Bar; // works (Bar resolves to ‘Foo’, valid
> class name)
> $x = (new Foo) instanceof Foo; // works (Foo is a class)
> const Foo; // Not allowed, conflicts with class
>
Yeah, that makes perfect sense.
Also, I just realized that HHVM accepts expressions wrapped in parenthesis.
I might need to take a look at how it's done there.
Daniel Ribeiro
http://danielribeiro.org
