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rust/tests/rustdoc-js/generics-impl.rs
Michael Howell 12dc24f460 rustdoc-search: simplify rules for generics and type params
This commit is a response to feedback on the displayed type
signatures results, by making generics act stricter.

Generics are tightened by making order significant. This means
`Vec<Allocator>` now matches only with a true vector of allocators,
instead of matching the second type param. It also makes unboxing
within generics stricter, so `Result<A, B>` only matches if `B`
is in the error type and `A` is in the success type. The top level
of the function search is unaffected.

Find the discussion on:

* <https://rust-lang.zulipchat.com/#narrow/stream/393423-t-rustdoc.2Fmeetings/topic/meeting.202024-07-08/near/449965149>
* <https://github.com/rust-lang/rust/pull/124544#issuecomment-2204272265>
* <https://rust-lang.zulipchat.com/#narrow/channel/266220-t-rustdoc/topic/deciding.20on.20semantics.20of.20generics.20in.20rustdoc.20search/near/476841363>
2024-10-30 12:27:48 -07:00

39 lines
599 B
Rust

use std::io::{self, Read};
pub struct Aaaaaaa;
impl Aaaaaaa {
pub fn bbbbbbb(self) -> u32 {
1
}
pub fn ccccccc(&self) -> bool {
true
}
}
impl Read for Aaaaaaa {
fn read(&mut self, out: &mut [u8]) -> io::Result<usize> {
Ok(out.len())
}
}
pub struct Ddddddd<T>(T);
impl<T: Read> Ddddddd<T> {
pub fn eeeeeee(_: T) -> u64 {
1
}
pub fn fffffff(_: bool) -> u64 {
1
}
pub fn ggggggg(self) -> u64 {
1
}
pub fn hhhhhhh() -> Self
where
T: Default,
{
Ddddddd(T::default())
}
}