Add rust language editions support #3000
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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:
--rust-target
is before 1.31.0, use2015
--rust-target
version is before 1.56.0, use2018
In the future, it would be good to add these, if possible:
build.rs
, detect current edition (is this possible?), and use the one of thebuild.rs