rust: pin-init: add #[default_error(<type>)] attribute to initializer macros

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The `#[default_error(<type>)]` attribute can be used to supply a default
type as the error used for the `[pin_]init!` macros. This way one can
easily define custom `try_[pin_]init!` variants that default to your
project specific error type. Just write the following declarative macro:

    macro_rules! try_init {
        ($($args:tt)*) => {
            ::pin_init::init!(
                #[default_error(YourCustomErrorType)]
                $($args)*
            )
        }
    }

Tested-by: Andreas Hindborg <a.hindborg@kernel.org>
Reviewed-by: Gary Guo <gary@garyguo.net>
Signed-off-by: Benno Lossin <lossin@kernel.org>

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Benno Lossin 2026-01-16 11:54:25 +01:00

parent 4883830e97

commit aeabc92eb2

1 changed files with 41 additions and 3 deletions

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44

rust/pin-init/internal/src/init.rs

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