Delete Decoder::read_map_elt_val

Author: Mark-Simulacrum

compiler/rustc_serialize/src/collection_impls.rs

@@ -82,7 +82,7 @@ where
             let mut map = BTreeMap::new();
             for _ in 0..len {
                 let key = Decodable::decode(d);
-                let val = d.read_map_elt_val(|d| Decodable::decode(d));
+                let val = Decodable::decode(d);
                 map.insert(key, val);
             }
             map
@@ -148,7 +148,7 @@ where
             let mut map = HashMap::with_capacity_and_hasher(len, state);
             for _ in 0..len {
                 let key = Decodable::decode(d);
-                let val = d.read_map_elt_val(|d| Decodable::decode(d));
+                let val = Decodable::decode(d);
                 map.insert(key, val);
             }
             map
@@ -227,7 +227,7 @@ where
             let mut map = indexmap::IndexMap::with_capacity_and_hasher(len, state);
             for _ in 0..len {
                 let key = Decodable::decode(d);
-                let val = d.read_map_elt_val(|d| Decodable::decode(d));
+                let val = Decodable::decode(d);
                 map.insert(key, val);
             }
             map

compiler/rustc_serialize/src/serialize.rs

@@ -225,14 +225,6 @@ pub trait Decoder {
         let len = self.read_usize();
         f(self, len)
     }
-
-    #[inline]
-    fn read_map_elt_val<T, F>(&mut self, f: F) -> T
-    where
-        F: FnOnce(&mut Self) -> T,
-    {
-        f(self)
-    }
 }
 
 /// Trait for types that can be serialized