web-sys public interface

[jonathanKingston]

I would like the ability to figure out the relationship from webidl files and investigate the properties, and interfaces an element exposes.

The use-case I am trying to solve is essentially wrapping up the interfaces and neaten the API a little. That way I can wrap that "input" creates HTMLInputElement and also implements HTMLElement

I started by parsing webidl myself however it will end up requiring a lot of reimplementation of the web-sys crate. I ended up having to manipulate type into _type, accessKey to access_key and HTMLDivElement to HtmlDivElement

I'm not sure if it makes sense to output the backend format instead, in a way I kind of need a mapping of the webidl to the web_sys.

To be useful I would need something like an interim data structure like the following:

HtmlInputElement {
  webidl_name: "HTMLInputElement",
  interfaces: ["HTMLElement", "Element", "EventTarget"],
  properties: [
    {
      name: "id",
      setter: {name: "set_id", arguments: [...]}
    }
  ]
}

Having the ast that is about to be written to file might be a simpler way to code generate and wrap around the Element interfaces.

[alexcrichton]

This seems like a good idea to me! I think we could pretty reasonably basically have a public crate that sits on top of web-sys's webidls and is run by web-sys's build script. That could have a conservative API which provides access to all of the internals of what we do, basically iterating over the program imports that we generate

[alexcrichton]

I'm going to close this since it's been quiet for some time, it's still possible to add this if necessary though!

[cortopy]

@alexandrestein I've just landed here from rust-lang/rls#1489. It seems like this would be required to have a good RLS experience with web-sys

[Pauan]

@cortopy Although it wasn't intended to fix RLS, this PR does indirectly fix it, because it removes the build.rs script.

[dancespiele]

@Pauan In my case I have the last version of wasm-bindgen(0.2.59) and web_sys(0.3.36) and I don't get autocomplete in vscode