Fix panics when `pub fn` depends on `pub` reimport from private `mod`.

Before this CL, `cc_bindings_from_rs` would panic with an error message
like: '`Dependency::predecessor` should refer to a NodeId in the `nodes`
parameter.  predecessor = SnippetKey { def_id: DefId(0:553 ~
emath[b789]::vec2::Vec2), kind: MainApi }; successor = SnippetKey {
def_id: DefId(0:43 ~ emath[b789]::align::center_size_in_rect), kind:
ImplDetails }', .../cc_bindings_from_rs/toposort.rs:142:32.

The problem was that `format_adt_core` would succeed for types in
private modules, even though `cc_bindings_from_rs` doesn't currently
support reimports.  This would result in emitting bindings for functions
that refer to non-existent bindings for parameter types.

PiperOrigin-RevId: 513697609
3 files changed
tree: 223c31f6e5ffe1dda9508830f28efc8cae165b73
  1. .bazelci/
  2. bazel/
  3. cc_bindings_from_rs/
  4. common/
  5. docs/
  6. lifetime_analysis/
  7. lifetime_annotations/
  8. migrator/
  9. nullability_verification/
  10. rs_bindings_from_cc/
  11. support/
  12. .bazelrc
  13. .gitignore
  14. BUILD
  15. Cargo.Bazel.lock
  16. CODE_OF_CONDUCT
  17. CONTRIBUTING
  18. LICENSE
  19. README.md
  20. 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