>
>
> I remember it was discussed here
> http://esdiscuss.org/topic/protocol-library-as-alternative-to-refinements-russell-leggett,
> ( the syntax in
> https://gist.github.com/genericallyloud/7086380 )
>
> Do the semantics proposed above work with what's proposed there?
>
That's it - thanks for the link!
Yes - it could definitely work. Russell didn't actually an implementation
for the his Protocol function, but using this proposal, the "methods"
property of the resulting "protocol" object could be a dictionary of custom
"reference name" objects.
Leaving aside all of the gory dispatch details, it might look something
like this:
class Protocol {
constructor(...names) {
this.methods = {};
for (let name of names)
this.methods[name] = this._createMethod(name);
}
_createMethod(name) {
return {
[Symbol.referenceGet]: target => {
// 1. If target has an own property of "name", return
it.
// 2. If target's type matches an extension of the
protocol,
// return the protocol method.
// 3. If the target has a method of the same name
somewhere up
// the prototype chain, return it.
// 4. If a default has been defined, return it.
// 5. Otherwise, return undefined.
}
};
}
}
_______________________________________________
es-discuss mailing list
[email protected]
https://mail.mozilla.org/listinfo/es-discuss
