Re-export FooMethods and FooCast from DOM module foo

[jdm]

Instead of making other DOM code import dom::bindings::codegen::Bindings::FooBinding::FooMethods in order to call methods on JSRef<Foo>, we should just re-export (ie. pub use) the FooMethods and FooCast traits for each type in its DOM implementation module. Then users can do use dom::foo::{Foo, FooMethods, FooCast} and it will be much more readable.

[ctlevi]

I'm new to Rust and Servo, but I'm interesting in diving into the language and figured servo was a great place to start. This task seemed simple enough.

After some googling on what exactly pub use is doing, I've got WindowMethods and NodeCast re-exporting and using like use dom::window::{Window, WindowMethods}. I'm not sure what the protocol on grabbing these easy tasks is, but just wanting to let people know I'm taking a look at this one.

[jdm]

It's yours!

[gilles-leblanc]

@ctlevi Hi, I'm wondering if you're still working on this? Otherwise I would like to take it.

[jdm]

@Manishearth actually has a syntax extension that should be able to accomplish this automatically after the next Rust upgrade, so I don't think it's worth investing the time to do this manually any more.

[Manishearth]

Yeah, I have one. https://github.com/Manishearth/servo/compare/reexport , but it doesn't work yet because rustup (ViewItem is not yet a regular Item)

[nox]

Not all interfaces have a method trait.

[nox]

We could codegen a module that contains the cast, the constants module and the method trait, and then use * in that from a plugin.