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Expose coercion logic in hir API

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This commit is contained in:
Florian Diebold
2022-03-20 16:19:02 +01:00
parent 6133e6a002
commit 2d30dd67d3
5 changed files with 67 additions and 8 deletions
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9
crates/hir/src/lib.rs
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@@ -2900,7 +2900,7 @@ impl Type {
self.autoderef_(db).map(move |ty| self.derived(ty))
}
pub fn autoderef_<'a>(&'a self, db: &'a dyn HirDatabase) -> impl Iterator<Item = Ty> + 'a {
fn autoderef_<'a>(&'a self, db: &'a dyn HirDatabase) -> impl Iterator<Item = Ty> + 'a {
// There should be no inference vars in types passed here
let canonical = hir_ty::replace_errors_with_variables(&self.ty);
let environment = self.env.clone();
@@ -3238,7 +3238,12 @@ impl Type {
pub fn could_unify_with(&self, db: &dyn HirDatabase, other: &Type) -> bool {
let tys = hir_ty::replace_errors_with_variables(&(self.ty.clone(), other.ty.clone()));
could_unify(db, self.env.clone(), &tys)
hir_ty::could_unify(db, self.env.clone(), &tys)
}
pub fn could_coerce_to(&self, db: &dyn HirDatabase, to: &Type) -> bool {
let tys = hir_ty::replace_errors_with_variables(&(self.ty.clone(), to.ty.clone()));
hir_ty::could_coerce(db, self.env.clone(), &tys)
}
}