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bazel / crubit / bad99636a426792298ccebcedcc67ac87d5043a3
commitbad99636a426792298ccebcedcc67ac87d5043a3[log] [tgz]
authorLukasz Anforowicz <lukasza@google.com>Fri Nov 18 16:39:13 2022 -0800
committerCopybara-Service <copybara-worker@google.com>Fri Nov 18 16:39:42 2022 -0800
treeb51fb348e595f04d49ba5a6bc0643688471558c2
parent2f849cffd6c7cb5c0988b7c805cd51e7ebdc618b [diff]
Merge `api` and `cc_impl` fields of `BindingsSnippet`.

Before this CL, (optional) thunk declarations would go into `cc_impl`
and API functions would go into the `api` field of `BindingsSnippet`.
`cc_impl` would be emitted in a separate `__crubit_internal` namespace
that would go before `api` in the generated `...cc_api.h` file.  This
scheme aesthetically separates implementation details (thunk
declarations in the `__crubit_internal` namespace) from the real API.
Unfortunately, this scheme will break down in the future - once
`struct`s can be used as function parameters, because `stucts`
definitions are part of the API, but thunk declarations still need to
refer to them.  Therefore, after this CL, `cc_impl` and `api` fields of
`BindingsSnippet` are merged into a single field.

This CL also performs additional refactorings in the related code:
- The `api` field is renamed to `cc`
- The `rs_impl` field is renamed to `rs`
- `BindingsSnippet` is renamed to `MixedSnippet` (since now it contains
  `cc` and `rs` fields - a mix of C++ and Rust).
- Instead of having a separate `include` and `cc` fields, we A)
  remove the `include`, B) change the type of the `cc` field from
  `TokenStream` to `CcSnippet` (which internally already contains
  `includes` and a `TokenStream`).

PiperOrigin-RevId: 489588797
2 files changed
tree: b51fb348e595f04d49ba5a6bc0643688471558c2
  1. .bazelci/
  2. bazel/
  3. cc_bindings_from_rs/
  4. cc_import/
  5. cc_template/
  6. common/
  7. docs/
  8. lifetime_analysis/
  9. lifetime_annotations/
  10. migrator/
  11. nullability_verification/
  12. rs_bindings_from_cc/
  13. .bazelrc
  14. .gitignore
  15. BUILD
  16. Cargo.Bazel.lock
  17. CODE_OF_CONDUCT
  18. CONTRIBUTING
  19. LICENSE
  20. README.md
  21. WORKSPACE
README.md

Crubit: C++/Rust Bidirectional Interop Tool

Build status

Extremely experimental interop tooling for C++ and Rust.

Please don‘t use, this is an experiment and we don’t yet know where will it take us. There will be breaking changes without warning. Unfortunately, we can't take contributions at this point.

Building Crubit

$ apt install clang lld bazel
$ git clone git@github.com:google/crubit.git
$ cd crubit
$ bazel build --linkopt=-fuse-ld=/usr/bin/ld.lld //rs_bindings_from_cc:rs_bindings_from_cc_impl

Using a prebuilt LLVM tree

$ git clone https://github.com/llvm/llvm-project
$ cd llvm-project
$ CC=clang CXX=clang++ cmake -S llvm -B build -DLLVM_ENABLE_PROJECTS='clang' -DCMAKE_BUILD_TYPE=Release -DCMAKE_INSTALL_PREFIX=install
$ cmake --build build -j
$ # wait...
$ cmake --install build
$ cd ../crubit
$ LLVM_INSTALL_PATH=../llvm-project/install bazel build //rs_bindings_from_cc:rs_bindings_from_cc_impl