7.2.3 生成的 C++

03-生成的 C++ — Comprehensive Rust

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译文 · 基于 Comprehensive Rust

原文链接: https://google.github.io/comprehensive-rust/android/interoperability/cpp/generated-cpp.html

7.2.3 生成的 C++

// Copyright 2023 Google LLC
// SPDX-License-Identifier: Apache-2.0
#[cxx::bridge]
mod ffi {
    // Rust types and signatures exposed to C++.
    extern "Rust" {
        type MultiBuf;

        fn next_chunk(buf: &mut MultiBuf) -> &[u8];
    }
}

大致会得到如下 C++：

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struct MultiBuf final : public ::rust::Opaque {
  ~MultiBuf() = delete;

private:
  friend ::rust::layout;
  struct layout {
    static ::std::size_t size() noexcept;
    static ::std::size_t align() noexcept;
  };
};

::rust::Slice<::std::uint8_t const> next_chunk(::org::blobstore::MultiBuf &buf) noexcept;

最后修改 August 11, 2026: 更新 (70a5af133)