Merge #1844

1844: Support bare `Trait` without dyn r=flodiebold a=flodiebold



Co-authored-by: Florian Diebold <[email protected]>

Author: bors[bot]

crates/ra_hir/src/ty/lower.rs

@@ -124,8 +124,7 @@ impl Ty {
                         Ty::Unknown
                     }
                 } else {
-                    // FIXME dyn Trait without the dyn
-                    Ty::Unknown
+                    Ty::Dyn(Arc::new([GenericPredicate::Implemented(trait_ref)]))
                 };
             }
             TypeNs::GenericParam(idx) => {

crates/ra_hir/src/ty/tests.rs

@@ -3626,19 +3626,19 @@ fn test(x: Trait, y: &Trait) -> u64 {
         @r###"
     [27; 31) 'self': &Self
     [61; 63) '{}': ()
-    [73; 74) 'x': {unknown}
-    [83; 84) 'y': &{unknown}
+    [73; 74) 'x': dyn Trait
+    [83; 84) 'y': &dyn Trait
     [101; 176) '{     ...o(); }': ()
-    [107; 108) 'x': {unknown}
-    [114; 115) 'y': &{unknown}
-    [125; 126) 'z': {unknown}
-    [129; 132) 'bar': fn bar() -> {unknown}
-    [129; 134) 'bar()': {unknown}
-    [140; 141) 'x': {unknown}
+    [107; 108) 'x': dyn Trait
+    [114; 115) 'y': &dyn Trait
+    [125; 126) 'z': dyn Trait
+    [129; 132) 'bar': fn bar() -> dyn Trait
+    [129; 134) 'bar()': dyn Trait
+    [140; 141) 'x': dyn Trait
     [140; 147) 'x.foo()': u64
-    [153; 154) 'y': &{unknown}
+    [153; 154) 'y': &dyn Trait
     [153; 160) 'y.foo()': u64
-    [166; 167) 'z': {unknown}
+    [166; 167) 'z': dyn Trait
     [166; 173) 'z.foo()': u64
     "###
     );