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[workerd-cxx] rust type aliases #43

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Merged
merged 2 commits into from
Jul 10, 2025
Merged

[workerd-cxx] rust type aliases #43

merged 2 commits into from
Jul 10, 2025

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mikea
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@mikea mikea commented Jul 7, 2025 •
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This is dtolnay#1181 merged in.

I have reviewed it and verified in my async io branch. With this change we can now do in the other module:

    extern "Rust" {
        #[namespace = "kj_rs_io::ffi"]
        type RustAsyncInputStream = io::RustAsyncInputStream;

        fn create_rust_mock_input_stream(data: &[u8]) -> Box<RustAsyncInputStream>;
   }

@schreter
Minimal support for Rust type aliases
5ffc29a 
The intention is to provide support to re-import Rust types already
exported elsewhere into other bridges, creating equivalence of
`extern "Rust"` types on the C++ side.

Currently, the support is limited to re-exporting the type under the
same name and the C++ namespace must be explicitly specified. Then,
C++ functions can use the same type.
@mikea mikea changed the title Schreter rust type alias [workerd-cxx] rust type aliases Jul 7, 2025
@mikea mikea force-pushed the schreter_rust_type_alias branch from 9d848a4 to 944a05b Compare July 8, 2025 15:09
@mikea mikea force-pushed the schreter_rust_type_alias branch from 944a05b to 9c92af4 Compare July 8, 2025 16:28
@mikea mikea marked this pull request as ready for review July 8, 2025 16:42
@mikea mikea merged commit bd77fec into master Jul 10, 2025
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@mikea mikea deleted the schreter_rust_type_alias branch July 10, 2025 00:55
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@LordGoatius LordGoatius LordGoatius approved these changes

@harrishancock harrishancock Awaiting requested review from harrishancock

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@mikea @LordGoatius @schreter