Remove unnecessary Option

2022-09-13 01:52:16 +09:00
parent efb56160c9
commit d223c28c7d
3 changed files with 10 additions and 5 deletions
--- a/crates/hir/src/lib.rs
+++ b/crates/hir/src/lib.rs
@@ -2880,7 +2880,12 @@ impl Type {
            })
            .build();

-        db.normalize_projection(projection, self.env.clone()).map(|ty| self.derived(ty))
+        let ty = db.normalize_projection(projection, self.env.clone());
+        if ty.is_unknown() {
+            None
+        } else {
+            Some(self.derived(ty))
+        }
    }

    pub fn is_copy(&self, db: &dyn HirDatabase) -> bool {