| // Part of the Crubit project, under the Apache License v2.0 with LLVM |
| // Exceptions. See /LICENSE for license information. |
| // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
| |
| //! This crate is used as a test input for `cc_bindings_from_rs` and the |
| //! generated C++ bindings are then tested via `crate_name_test.cc`. |
| //! |
| //! The file name (i.e. `lib.rs`) is typical for Cargo crates. The crate |
| //! is given a real name via Bazel BUILD file: |
| //! |
| //! ``` |
| //! rust_library( |
| //! name = "custom_crate_name", |
| //! srcs = ["lib.rs"], |
| //! ) |
| //! ``` |
| //! |
| //! This test verifies that `cc_bindings_from_rs` is invoked with |
| //! `--crate_name=custom_crate_name` - without the cmdline argument |
| //! `cc_bindings_from_rs` would think that the crate name is `lib`. |
| //! - `lib::get_the_answer()` wouldn't compile if used in the generated |
| //! `...cc_api_impl.rs`. |
| //! - `namespace lib` is also undesirable in the generated `...cc_api.h` (this |
| //! is slightly less important because in the long-term the C++ namespace |
| //! might not depend on the crate name - see |
| //! <internal link>). |
| |
| pub fn get_the_answer() -> i32 { |
| 42 |
| } |
