Attribute Macro heim_derive::os_ext_for

#[os_ext_for]

Augument OS-specific trait with boilerplate-generation.

Automatically implements this trait for target struct, generates all opaque methods and attaches #[cfg()] attribute.

Should be used as following:

#[heim_derive::os_ext_for(crate::CpuTimes, cfg(target_os = "linux"))]
pub trait CpuTimesExt {
    fn foo(&self) -> u32;
}

Will generate the code similar to following:

pub trait CpuTimesExt {
    fn foo(&self) -> u32;
}

#[cfg(target_os = "linux")
impl CpuTimesExt for crate::CpuTimes {
    fn foo(&self) -> u32 {
        self.as_ref().foo()
    }
}