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-rw-r--r--crates/hir/src/lib.rs12
1 files changed, 12 insertions, 0 deletions
diff --git a/crates/hir/src/lib.rs b/crates/hir/src/lib.rs
index eba46a056..0acfa582a 100644
--- a/crates/hir/src/lib.rs
+++ b/crates/hir/src/lib.rs
@@ -2066,6 +2066,18 @@ impl Type {
2066 self.ty.dyn_trait().map(Into::into) 2066 self.ty.dyn_trait().map(Into::into)
2067 } 2067 }
2068 2068
2069 /// If a type can be represented as `dyn Trait`, returns all traits accessible via this type,
2070 /// or an empty iterator otherwise.
2071 pub fn applicable_inherent_traits<'a>(
2072 &'a self,
2073 db: &'a dyn HirDatabase,
2074 ) -> impl Iterator<Item = Trait> + 'a {
2075 self.autoderef(db)
2076 .filter_map(|derefed_type| derefed_type.ty.dyn_trait())
2077 .flat_map(move |dyn_trait_id| hir_ty::all_super_traits(db.upcast(), dyn_trait_id))
2078 .map(Trait::from)
2079 }
2080
2069 pub fn as_impl_traits(&self, db: &dyn HirDatabase) -> Option<Vec<Trait>> { 2081 pub fn as_impl_traits(&self, db: &dyn HirDatabase) -> Option<Vec<Trait>> {
2070 self.ty.impl_trait_bounds(db).map(|it| { 2082 self.ty.impl_trait_bounds(db).map(|it| {
2071 it.into_iter() 2083 it.into_iter()