| commit | 844c47fc04cd052d39083949700439667d463db5 | [log] [tgz] |
|---|---|---|
| author | Matthew Maurer <mmaurer@google.com> | Tue Mar 07 17:23:31 2023 -0800 |
| committer | Matthew Maurer <mmaurer@google.com> | Tue Mar 07 17:23:31 2023 -0800 |
| tree | 9057ef9f4fc908466cb4b084ec40777c9fd31fe8 | |
| parent | 996ae9dfd9597c0d63d19bacd4d587456147b916 [diff] |
Make cfg-if available to product and vendor Bug: 270690570 Test: mma in external/rust/crates Change-Id: I41939acbc934a9da99dae350867649dfe7701b8b
A macro to ergonomically define an item depending on a large number of #[cfg] parameters. Structured like an if-else chain, the first matching branch is the item that gets emitted.
[dependencies] cfg-if = "0.1"
cfg_if::cfg_if! { if #[cfg(unix)] { fn foo() { /* unix specific functionality */ } } else if #[cfg(target_pointer_width = "32")] { fn foo() { /* non-unix, 32-bit functionality */ } } else { fn foo() { /* fallback implementation */ } } } fn main() { foo(); }
This project is licensed under either of
at your option.
Unless you explicitly state otherwise, any contribution intentionally submitted for inclusion in cfg-if by you, as defined in the Apache-2.0 license, shall be dual licensed as above, without any additional terms or conditions.