Mark ab/6881855 as merged am: 8fcc90ed7b am: f94b78cbe8

Original change: https://googleplex-android-review.googlesource.com/c/platform/external/rust/crates/cfg-if/+/13112769

Change-Id: I7c0d317f9b13609886b5306f8010b6c2b1983d91
tree: eb1a804931306e5bdf9e61114225d3c00f1557f3
  1. .github/
  2. patches/
  3. src/
  4. tests/
  5. .cargo_vcs_info.json
  6. .gitignore
  7. Android.bp
  8. Cargo.toml
  9. Cargo.toml.orig
  10. LICENSE-APACHE
  11. LICENSE-MIT
  12. METADATA
  13. MODULE_LICENSE_APACHE2
  14. OWNERS
  15. README.md
  16. TEST_MAPPING
README.md

cfg-if

Documentation

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"

Example

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();
}

License

This project is licensed under either of

at your option.

Contribution

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.