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Make synthetic RPITIT assoc ty name handling more rigorous.

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Currently it relies on special treatment of `kw::Empty`, which is really
easy to get wrong. This commit makes the special case clearer in the
type system by using `Option`. It's a bit clumsy, but the synthetic name
handling itself is a bit clumsy; better to make it explicit than sneak
it in.

Fixes #133426.
This commit is contained in:
Nicholas Nethercote
2025-03-04 14:34:18 +11:00
parent e5c1d1cb7e
commit cf0752527f
1 changed files with 3 additions and 3 deletions
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clippy_utils/src/lib.rs
+3 -3
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@@ -3489,7 +3489,7 @@ fn maybe_get_relative_path(from: &DefPath, to: &DefPath, max_super: usize) -> St
// a::b::c ::d::sym refers to
// e::f::sym:: ::
// result should be super::super::super::super::e::f
if let DefPathData::TypeNs(s) = l {
if let DefPathData::TypeNs(Some(s)) = l {
path.push(s.to_string());
}
if let DefPathData::TypeNs(_) = r {
@@ -3500,7 +3500,7 @@ fn maybe_get_relative_path(from: &DefPath, to: &DefPath, max_super: usize) -> St
// a::b::sym:: :: refers to
// c::d::e ::f::sym
// when looking at `f`
Left(DefPathData::TypeNs(sym)) => path.push(sym.to_string()),
Left(DefPathData::TypeNs(Some(sym))) => path.push(sym.to_string()),
// consider:
// a::b::c ::d::sym refers to
// e::f::sym:: ::
@@ -3514,7 +3514,7 @@ fn maybe_get_relative_path(from: &DefPath, to: &DefPath, max_super: usize) -> St
// `super` chain would be too long, just use the absolute path instead
once(String::from("crate"))
.chain(to.data.iter().filter_map(|el| {
if let DefPathData::TypeNs(sym) = el.data {
if let DefPathData::TypeNs(Some(sym)) = el.data {
Some(sym.to_string())
} else {
None