Add rust language editions support by nyurik · Pull Request #3000 · rust-lang/rust-bindgen (original) (raw)

Introduce a new --rust-edition parameter with allowed values 2015, 2018, 2021, and 2024. This allows different code generation depending on the language target.

In this PR, the C-string literals are now generated differently depending on the language edition (literals like c"example" are not available before 2021)

The default language edition uses logic:

• if --rust-target is before 1.31.0, use 2015
• if --rust-target version is before 1.56.0, use 2018
• use 2018 as default otherwise

In the future, it would be good to add these, if possible:

• if compiled as a cli utility, use 2018 to reduce compatibility issues (?)
• if used as a lib from build.rs, detect current edition (is this possible?), and use the one of the build.rs