Rust now has the ability to import macros from other crates, hurray!
However, I'd like to propose adjusting the current way of using them to be
more like importing/exporting other symbols of a crate.
1) It's more consistent, makes it easier to find where macros came from.
2) Current usage brings name collisions.
Current example:
pub mod foo {
// assume other macros as well
#[macro_export]
macro_rules! bar ( ... )
}
pub mod baz {
// assume other macros as well
#[macro_export]
macro_rules! bar ( ... )
}
mod herp {
// i want bar! from foo, and some other macros from baz
[phase(syntax)]
use super::foo;
[phase(syntax)]
use super::baz;
pub Derp = bar!(); // which bar? is this an ICE? or logic error?
}
Proposed example:
pub mod foo {
pub marco_rules! bar ( ... );
}
pub mod baz {
pub marco_rules! bar ( ... );
pub marco_rules! quux ( ... );
}
mod herp {
use super::foo::bar!;
use super::baz::quux!;
// using same name macros, no problem
use baz! = super::baz::bar!;
pub Derp = bar!(baz!());
}
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