Rollup merge of #94550 - GuillaumeGomez:HKF-macros, r=notriddle

rustdoc: Add test for higher kinded functions generated by macros

Fixes #75564.

The problem has been solved apparently so adding a test to prevent a regression.

r? ```@notriddle```
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Matthias Krüger 2022-03-03 20:01:46 +01:00 committed by GitHub
commit 835eaaa77e
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#![crate_name = "foo"]
pub struct TyCtxt<'tcx>(&'tcx u8);
macro_rules! gen {
($(($name:ident, $tcx:lifetime, [$k:ty], [$r:ty]))*) => {
pub struct Providers {
$(pub $name: for<$tcx> fn(TyCtxt<$tcx>, $k) -> $r,)*
}
}
}
// @has 'foo/struct.Providers.html'
// @has - '//*[@class="docblock item-decl"]//code' "pub a: for<'tcx> fn(_: TyCtxt<'tcx>, _: u8) -> i8,"
// @has - '//*[@class="docblock item-decl"]//code' "pub b: for<'tcx> fn(_: TyCtxt<'tcx>, _: u16) -> i16,"
// @has - '//*[@id="structfield.a"]/code' "a: for<'tcx> fn(_: TyCtxt<'tcx>, _: u8) -> i8"
// @has - '//*[@id="structfield.b"]/code' "b: for<'tcx> fn(_: TyCtxt<'tcx>, _: u16) -> i16"
gen! {
(a, 'tcx, [u8], [i8])
(b, 'tcx, [u16], [i16])
}