std: Add a tracking issue for Peekable::is_empty

[rust.git] / src / libstd / collections / hash / state.rs

diff --git a/src/libstd/collections/hash/state.rs b/src/libstd/collections/hash/state.rs
index 546e15296c7fb5ecf00fd018b74f8228e775bdfd..167aca083038ef948caeb368239c3620ddb81715 100644 (file)
--- a/src/libstd/collections/hash/state.rs
+++ b/src/libstd/collections/hash/state.rs
@@ -8,32 +8,17 @@
 // option. This file may not be copied, modified, or distributed
 // except according to those terms.
 
-#![unstable(feature = "hashmap_hasher", reason = "hasher stuff is unclear")]
+#![unstable(feature = "hashmap_hasher", reason = "hasher stuff is unclear",
+            issue = "27713")]
+#![rustc_deprecated(since = "1.7.0", reason = "support moved to std::hash")]
+#![allow(deprecated)]
 
 use clone::Clone;
 use default::Default;
 use hash;
 use marker;
 
-/// A trait representing stateful hashes which can be used to hash keys in a
-/// `HashMap`.
-///
-/// A HashState is used as a factory for instances of `Hasher` which a `HashMap`
-/// can then use to hash keys independently. A `HashMap` by default uses a state
-/// which will create instances of a `SipHasher`, but a custom state factory can
-/// be provided to the `with_hash_state` function.
-///
-/// If a hashing algorithm has no initial state, then the `Hasher` type for that
-/// algorithm can implement the `Default` trait and create hash maps with the
-/// `DefaultState` structure. This state is 0-sized and will simply delegate
-/// to `Default` when asked to create a hasher.
-pub trait HashState {
-    /// Type of the hasher that will be created.
-    type Hasher: hash::Hasher;
-
-    /// Creates a new hasher based on the given state of this object.
-    fn hasher(&self) -> Self::Hasher;
-}
+pub use hash::HashState;
 
 /// A structure which is a factory for instances of `Hasher` which implement the
 /// default trait.