Unnamed repository; edit this file 'description' to name the repository.
Diffstat (limited to 'crates/hir-ty/src/infer/unify.rs')
| -rw-r--r-- | crates/hir-ty/src/infer/unify.rs | 9 |
1 files changed, 6 insertions, 3 deletions
diff --git a/crates/hir-ty/src/infer/unify.rs b/crates/hir-ty/src/infer/unify.rs index 2a07dd708c..0e516b9399 100644 --- a/crates/hir-ty/src/infer/unify.rs +++ b/crates/hir-ty/src/infer/unify.rs @@ -633,7 +633,10 @@ impl<'a> InferenceTable<'a> { ) -> Option<(Option<FnTrait>, Vec<Ty>, Ty)> { match ty.callable_sig(self.db) { Some(sig) => Some((None, sig.params().to_vec(), sig.ret().clone())), - None => self.callable_sig_from_fn_trait(ty, num_args), + None => { + let (f, args_ty, return_ty) = self.callable_sig_from_fn_trait(ty, num_args)?; + Some((Some(f), args_ty, return_ty)) + } } } @@ -641,7 +644,7 @@ impl<'a> InferenceTable<'a> { &mut self, ty: &Ty, num_args: usize, - ) -> Option<(Option<FnTrait>, Vec<Ty>, Ty)> { + ) -> Option<(FnTrait, Vec<Ty>, Ty)> { let krate = self.trait_env.krate; let fn_once_trait = FnTrait::FnOnce.get_id(self.db, krate)?; let trait_data = self.db.trait_data(fn_once_trait); @@ -693,7 +696,7 @@ impl<'a> InferenceTable<'a> { }; let canonical = self.canonicalize(obligation.clone()); if self.db.trait_solve(krate, canonical.value.cast(Interner)).is_some() { - return Some((Some(fn_x), arg_tys, return_ty)); + return Some((fn_x, arg_tys, return_ty)); } } unreachable!("It should at least implement FnOnce at this point"); |