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pcwalton's profile
Patrick Walton
Patrick Walton
Patrick Walton
@pcwalton

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Patrick Walton

@pcwalton

Research engineer at Mozilla

San Francisco, CA
pcwalton.github.io
Joined November 2009

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    1. Harlan Haskins‏ @harlanhaskins 18 Jan 2018
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      Is there anything stopping Rust from taking bindgen in-tree and importing C modules during compilation automatically? I really like the Clang Importer in Swift...

      2 replies 0 retweets 0 likes
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    2. Harlan Haskins‏ @harlanhaskins 18 Jan 2018
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      Ah, I suppose the fact that this would encourage people to import unsafe code instead of intentionally creating safe abstractions on top. Though the Swift community has organically moved to "safe wrappers" in the interest of idiomaticity.

      1 reply 0 retweets 0 likes
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    3. Joe Groff‏ @jckarter 18 Jan 2018
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      Replying to @harlanhaskins

      From what I recall of the early rust-dev discussions about this, they didn't want to take Clang as a hard dependency. cc @graydon_pub

      2 replies 0 retweets 1 like
    4. Graydon Hoare‏ @graydon_pub 18 Jan 2018
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      Replying to @jckarter @harlanhaskins

      Certainly the dependency was a concern. Also bindgen .. generates text. Afaik it’s not integrated into constructing rust types, as the type checker sees them. At least I thought it wasn’t, long ago, maybe it’s grown in that direction or uses rust compiler libs more than I think.

      2 replies 0 retweets 0 likes
    5. Joe Groff‏ @jckarter 18 Jan 2018
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      Replying to @graydon_pub @harlanhaskins

      That's certainly a problem with the bindgen approach, that in order to generate text you need to have a textual representation of nearly every C feature in the destination language. Swift can use Clang's parser and codegen while selectively reflecting edgy features like bitfields

      1 reply 0 retweets 0 likes
    6. Graydon Hoare‏ @graydon_pub 18 Jan 2018
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      Replying to @jckarter @harlanhaskins

      Yeah, the Swift clang importer is amazing. I'd suggest copying it for Rust, except .. eh, only worry is that clang is very much not a pure function from C sources => ASTs. Interfacing with clang is a delicate dance, I think it brings a lot of impl. fragility.

      2 replies 0 retweets 2 likes
    7. Graydon Hoare‏ @graydon_pub 18 Jan 2018
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      Replying to @graydon_pub @jckarter @harlanhaskins

      Some of that might just be the extensive amount of magic the Swift clang importer has decided to do along the way? idk. I suspect a Rust clang importer would probably err on the side of making the user do more work, and get uglier but simpler results.

      1 reply 0 retweets 0 likes
    8. Joe Groff‏ @jckarter 18 Jan 2018
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      Replying to @graydon_pub @harlanhaskins

      Yeah all the renaming and attribute-driven-swift-interface generation only really make sense with a cooperative first party SDK too

      1 reply 0 retweets 1 like
    9. Graydon Hoare‏ @graydon_pub 18 Jan 2018
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      Replying to @jckarter @harlanhaskins

      Yes, I think there is no way anyone but a platform owner able to coordinate across SDKs and toolchains could get to the level of transparent interop Swift has managed with Cocoa. It's sufficiently magic that people often don't *notice* it, which is the highest praise.

      2 replies 0 retweets 0 likes
      Patrick Walton‏ @pcwalton 18 Jan 2018
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      Replying to @graydon_pub @jckarter @harlanhaskins

      *whisper* XPCOM ;)

      1:23 PM - 18 Jan 2018
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      • Jed Davis 🏳️‍🌈 Joe Groff
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        1. New conversation
        2. Nika Layzell‏ @kneecaw 18 Jan 2018
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          Replying to @pcwalton @graydon_pub and

          https://bugzilla.mozilla.org/show_bug.cgi?id=1293362 … ^.^ :-P

          1 reply 0 retweets 0 likes
        3. Nika Layzell‏ @kneecaw 18 Jan 2018
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          Replying to @kneecaw @pcwalton and

          Firmly not swift/cocoa level integration though. That is crazyland (cc @Gankro)

          1 reply 0 retweets 1 like
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