| commit | 4168e92647526b4769d07f81372dcfe64f0fd181 | [log] [tgz] |
|---|---|---|
| author | Maurice Lam <yukl@google.com> | Tue Jan 30 00:29:30 2024 +0000 |
| committer | Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com> | Tue Jan 30 00:29:30 2024 +0000 |
| tree | d1ffa34396b229cdae11944c5e8accba694cf879 | |
| parent | 7c9c9ba28b34ee938bb96732d94caa50add90402 [diff] | |
| parent | 4a20de7f76485b1602cd39e30067e399095cafd6 [diff] |
Add build files for strum_macros crate am: 4a20de7f76 Original change: https://android-review.googlesource.com/c/platform/external/rust/crates/strum_macros/+/2924633 Change-Id: If2e2a47130df32674835b683f79e73927ea427b8 Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>
Strum is a set of macros and traits for working with enums and strings easier in Rust.
Strum is currently compatible with versions of rustc >= 1.56.1. Pull Requests that improve compatibility with older versions are welcome. The project goal is to support a rust version for at least 2 years after release and even longer is preferred since this project changes slowly.
Import strum and strum_macros into your project by adding the following lines to your Cargo.toml. Strum_macros contains the macros needed to derive all the traits in Strum.
[dependencies] strum = "0.25" strum_macros = "0.25" # You can also use the "derive" feature, and import the macros directly from "strum" # strum = { version = "0.25", features = ["derive"] }
Strum has implemented the following macros:
| Macro | Description |
|---|---|
| EnumString | Converts strings to enum variants based on their name. |
| Display | Converts enum variants to strings |
| FromRepr | Convert from an integer to an enum. |
| AsRefStr | Implement AsRef<str> for MyEnum |
| IntoStaticStr | Implements From<MyEnum> for &'static str on an enum |
| EnumVariantNames | Adds an associated VARIANTS constant which is an array of discriminant names |
| EnumIter | Creates a new type that iterates of the variants of an enum. |
| EnumProperty | Add custom properties to enum variants. |
| EnumMessage | Add a verbose message to an enum variant. |
| EnumDiscriminants | Generate a new type with only the discriminant names. |
| EnumCount | Add a constant usize equal to the number of variants. |
Thanks for your interest in contributing. The project is divided into 3 parts, the traits are in the /strum folder. The procedural macros are in the /strum_macros folder, and the integration tests are in /strum_tests. If you are adding additional features to strum or strum_macros, you should make sure to run the tests and add new integration tests to make sure the features work as expected.
To see the generated code, set the STRUM_DEBUG environment variable before compiling your code. STRUM_DEBUG=1 will dump all of the generated code for every type. STRUM_DEBUG=YourType will only dump the code generated on a type named YourType.
Strum is short for STRing enUM because it's a library for augmenting enums with additional information through strings.
Strumming is also a very whimsical motion, much like writing Rust code.
