Re: WASM Host Bindings proposal docs

I think they removed (or specifically excluded) dictionaries from the Host
Bindings proposals to make the proposals more incremental.

Let's make sure not to block Host Bindings on the addition of dictionaries
- Host Bindings are much higher priority as long as dictionaries can be
added as an incremental improvement. Thanks JF for helping out on this!

On Wed, Mar 7, 2018 at 1:15 PM JF Bastien <w3c@jfbastien.com> wrote:

> On Wed, Mar 7, 2018 at 12:16 PM Corentin Wallez <cwallez@google.com>
> wrote:
>
>> Thanks for the pointers Kai!
>>
>> In the host bindings proposal, it looks like we could pass string to
>> functions both as C strings (memory offset + size) or a DOMString wrapped
>> in an anyref. If the choice between the two is left to the WebAssembly
>> module and supporting code, then it could choose to use DOMStrings wrapped
>> in anyref to take advantage of the AtomicString optimization. This is a bit
>> scary though because it might perform worse than C-strings on browsers that
>> don't have the optimization. The alternative is that WebGPU describes which
>> is the import binding structure is the most efficient for its entry points.
>>
>> The host binding proposal doesn't address dictionaries though (except for
>> the JSON string argument type) so we should ask the WASM CG what the
>> options would be there.
>>
>
> We could put it on the agenda for the upcoming in person meeting:
> https://github.com/WebAssembly/meetings/blob/master/2018/CG-04.md
>
> On Tue, Mar 6, 2018 at 5:12 PM, Kai Ninomiya <kainino@google.com> wrote:
>>
>>> Hey all,
>>>
>>> I don't think these have been shared here (I only just actually learned
>>> that there were published up-to-date proposals).
>>>
>>> Draft Reference Types proposal (add an "anyref" type to WASM which
>>> references opaque objects outside WASM):
>>>
>>> https://github.com/WebAssembly/reference-types/blob/master/proposals/reference-types/Overview.md
>>>
>>> Draft Host Bindings proposal (relies on "anyref" for host binding calls):
>>> https://github.com/WebAssembly/host-bindings/blob/master/proposals/host-
>>> bindings/Overview.md
>>>
>>> My understanding from a brief chat with Brad Nelson, just now, is that
>>> the anyref objects can be held directly from WASM - avoiding
>>> host-binding-call-time table lookups (lookups in the WebAssembly.Table).
>>>
>>
>>