Make payload of `NamespaceQualifier` private.

This CL prevents direct construction of `NamespaceQualifier` and forces
using explicit `code_gen_utils` APIs to construct a
`NamespaceQualifier`.  This is a step toward a future where the provided
construction API performs *early* verification of the input (e.g.
panicking or returning an error early when the inputs cannot be
formatted as C++ namespace identifiers or Rust module names).

This CL refactors places that used to depend on a public payload
of `NamespaceQualifier` in the following way:

* Construction of `NamespaceQualifier` now goes through an explicit
  `NamespaceQualifier::new` API.

* `CratePath` has been refactored to avoid having to rip-open and
  deconstruct a `NamespaceQualifier`.

PiperOrigin-RevId: 499270950
4 files changed
tree: feec74cd7397cc14b3bf6f0947c70b6a39856af9
  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