Transition to new Hash, removing IterBytes and std::to_bytes.

src/doc/guide-container.md

@@ -38,7 +38,7 @@ order.
 Each `HashMap` instance has a random 128-bit key to use with a keyed hash,
 making the order of a set of keys in a given hash table randomized. Rust
 provides a [SipHash](https://131002.net/siphash/) implementation for any type
-implementing the `IterBytes` trait.
+implementing the `Hash` trait.
 
 ## Double-ended queues
 
@@ -186,12 +186,12 @@ let mut calls = 0;
     let it = xs.iter().scan((), |_, x| {
         calls += 1;
         if *x < 3 { Some(x) } else { None }});
-        
+
     // the iterator will only yield 1 and 2 before returning None
     // If we were to call it 5 times, calls would end up as 5, despite
     // only 2 values being yielded (and therefore 3 unique calls being
     // made). The fuse() adaptor can fix this.
-    
+
     let mut it = it.fuse();
     it.next();
     it.next();

src/doc/po/ja/tutorial.md.po

@@ -4421,15 +4421,15 @@ msgstr ""
 #, fuzzy
 #| msgid ""
 #| "The full list of derivable traits is `Eq`, `TotalEq`, `Ord`, `TotalOrd`, "
-#| "`Encodable` `Decodable`, `Clone`, `DeepClone`, `IterBytes`, `Rand`, "
+#| "`Encodable` `Decodable`, `Clone`, `DeepClone`, `Hash`, `Rand`, "
 #| "`Zero`, and `ToStr`."
 msgid ""
 "The full list of derivable traits is `Eq`, `TotalEq`, `Ord`, `TotalOrd`, "
-"`Encodable` `Decodable`, `Clone`, `DeepClone`, `IterBytes`, `Rand`, "
+"`Encodable` `Decodable`, `Clone`, `DeepClone`, `Hash`, `Rand`, "
 "`Default`, `Zero`, and `ToStr`."
 msgstr ""
 "実装を自動的に導出可能なトレイトは、 `Eq`, `TotalEq`, `Ord`, `TotalOrd`, "
-"`Encodable` `Decodable`, `Clone`, `DeepClone`, `IterBytes`, `Rand`, `Zero`, "
+"`Encodable` `Decodable`, `Clone`, `DeepClone`, `Hash`, `Rand`, `Zero`, "
 "および `ToStr` です。."
 
 #. type: Plain text

src/doc/rust.md

@@ -2035,7 +2035,7 @@ Supported traits for `deriving` are:
 * Comparison traits: `Eq`, `TotalEq`, `Ord`, `TotalOrd`.
 * Serialization: `Encodable`, `Decodable`. These require `serialize`.
 * `Clone` and `DeepClone`, to perform (deep) copies.
-* `IterBytes`, to iterate over the bytes in a data type.
+* `Hash`, to iterate over the bytes in a data type.
 * `Rand`, to create a random instance of a data type.
 * `Default`, to create an empty instance of a data type.
 * `Zero`, to create an zero instance of a numeric data type.

src/doc/tutorial.md

@@ -2525,7 +2525,7 @@ enum ABC { A, B, C }
 
 The full list of derivable traits is `Eq`, `TotalEq`, `Ord`,
 `TotalOrd`, `Encodable` `Decodable`, `Clone`, `DeepClone`,
-`IterBytes`, `Rand`, `Default`, `Zero`, `FromPrimitive` and `Show`.
+`Hash`, `Rand`, `Default`, `Zero`, `FromPrimitive` and `Show`.
 
 # Crates and the module system
 

src/etc/vim/syntax/rust.vim

@@ -93,7 +93,6 @@ syn keyword rustTrait GenericPath Path PosixPath WindowsPath
 syn keyword rustTrait RawPtr
 syn keyword rustTrait Buffer Writer Reader Seek
 syn keyword rustTrait Str StrVector StrSlice OwnedStr IntoMaybeOwned
-syn keyword rustTrait IterBytes
 syn keyword rustTrait ToStr IntoStr
 syn keyword rustTrait Tuple1 Tuple2 Tuple3 Tuple4
 syn keyword rustTrait Tuple5 Tuple6 Tuple7 Tuple8

src/libcollections/enum_set.rs

@@ -15,7 +15,7 @@
 
 use std::num::Bitwise;
 
-#[deriving(Clone, Eq, IterBytes, ToStr, Encodable, Decodable)]
+#[deriving(Clone, Eq, Hash, ToStr, Encodable, Decodable)]
 /// A specialized Set implementation to use enum types.
 pub struct EnumSet<E> {
     // We must maintain the invariant that no bits are set

src/libcollections/hashmap.rs

@@ -54,7 +54,7 @@
 
 use std::cmp::max;
 use std::fmt;
-use std::hash_old::Hash;
+use std::hash::{Hash, Hasher, sip};
 use std::iter::{FilterMap, Chain, Repeat, Zip};
 use std::iter;
 use std::mem::replace;
@@ -79,10 +79,7 @@ struct Bucket<K,V> {
 /// hash function for internal state. This means that the order of all hash maps
 /// is randomized by keying each hash map randomly on creation.
 ///
-/// It is required that the keys implement the `Eq` and `Hash` traits, although
-/// this can frequently be achieved by just implementing the `Eq` and
-/// `IterBytes` traits as `Hash` is automatically implemented for types that
-/// implement `IterBytes`.
+/// It is required that the keys implement the `Eq` and `Hash` traits.
 pub struct HashMap<K,V> {
     priv k0: u64,
     priv k1: u64,
@@ -131,14 +128,14 @@ impl<K:Hash + Eq,V> HashMap<K, V> {
 
     #[inline]
     fn bucket_for_key(&self, k: &K) -> SearchResult {
-        let hash = k.hash_keyed(self.k0, self.k1) as uint;
+        let hash = sip::hash_with_keys(self.k0, self.k1, k) as uint;
         self.bucket_for_key_with_hash(hash, k)
     }
 
     #[inline]
     fn bucket_for_key_equiv<Q:Hash + Equiv<K>>(&self, k: &Q)
                                                -> SearchResult {
-        let hash = k.hash_keyed(self.k0, self.k1) as uint;
+        let hash = sip::hash_with_keys(self.k0, self.k1, k) as uint;
         self.bucket_for_key_with_hash_equiv(hash, k)
     }
 
@@ -339,14 +336,14 @@ impl<K:Hash + Eq,V> MutableMap<K, V> for HashMap<K, V> {
             self.expand();
         }
 
-        let hash = k.hash_keyed(self.k0, self.k1) as uint;
+        let hash = sip::hash_with_keys(self.k0, self.k1, &k) as uint;
         self.insert_internal(hash, k, v)
     }
 
     /// Removes a key from the map, returning the value at the key if the key
     /// was previously in the map.
     fn pop(&mut self, k: &K) -> Option<V> {
-        let hash = k.hash_keyed(self.k0, self.k1) as uint;
+        let hash = sip::hash_with_keys(self.k0, self.k1, k) as uint;
         self.pop_internal(hash, k)
     }
 }
@@ -446,7 +443,7 @@ impl<K: Hash + Eq, V> HashMap<K, V> {
             self.expand();
         }
 
-        let hash = k.hash_keyed(self.k0, self.k1) as uint;
+        let hash = sip::hash_with_keys(self.k0, self.k1, &k) as uint;
         let idx = match self.bucket_for_key_with_hash(hash, &k) {
             TableFull => fail!("Internal logic error"),
             FoundEntry(idx) => { found(&k, self.mut_value_for_bucket(idx), a); idx }
@@ -925,7 +922,7 @@ pub type SetAlgebraItems<'a, T> =
 
 impl<
     E: Encoder,
-    K: Encodable<E> + Hash + IterBytes + Eq,
+    K: Encodable<E> + Hash + Eq,
     V: Encodable<E>
 > Encodable<E> for HashMap<K, V> {
     fn encode(&self, e: &mut E) {
@@ -942,7 +939,7 @@ impl<
 
 impl<
     D: Decoder,
-    K: Decodable<D> + Hash + IterBytes + Eq,
+    K: Decodable<D> + Hash + Eq,
     V: Decodable<D>
 > Decodable<D> for HashMap<K, V> {
     fn decode(d: &mut D) -> HashMap<K, V> {
@@ -960,7 +957,7 @@ impl<
 
 impl<
     S: Encoder,
-    T: Encodable<S> + Hash + IterBytes + Eq
+    T: Encodable<S> + Hash + Eq
 > Encodable<S> for HashSet<T> {
     fn encode(&self, s: &mut S) {
         s.emit_seq(self.len(), |s| {
@@ -975,7 +972,7 @@ impl<
 
 impl<
     D: Decoder,
-    T: Decodable<D> + Hash + IterBytes + Eq
+    T: Decodable<D> + Hash + Eq
 > Decodable<D> for HashSet<T> {
     fn decode(d: &mut D) -> HashSet<T> {
         d.read_seq(|d, len| {

src/libcollections/lru_cache.rs

@@ -38,7 +38,7 @@
 //! ```
 
 use std::container::Container;
-use std::to_bytes::Cb;
+use std::hash::{Hash, sip};
 use std::ptr;
 use std::cast;
 
@@ -61,9 +61,9 @@ pub struct LruCache<K, V> {
     priv tail: *mut LruEntry<K, V>,
 }
 
-impl<K: IterBytes> IterBytes for KeyRef<K> {
-    fn iter_bytes(&self, lsb0: bool, f: Cb) -> bool {
-        unsafe{ (*self.k).iter_bytes(lsb0, f) }
+impl<K: Hash> Hash for KeyRef<K> {
+    fn hash(&self, s: &mut sip::SipState) {
+        unsafe {(*self.k).hash(s)}
     }
 }
 
@@ -93,7 +93,7 @@ impl<K, V> LruEntry<K, V> {
     }
 }
 
-impl<K: IterBytes + Eq, V> LruCache<K, V> {
+impl<K: Hash + Eq, V> LruCache<K, V> {
     /// Create an LRU Cache that holds at most `capacity` items.
     pub fn new(capacity: uint) -> LruCache<K, V> {
         let cache = LruCache {
@@ -217,7 +217,7 @@ impl<K: IterBytes + Eq, V> LruCache<K, V> {
     }
 }
 
-impl<A: ToStr + IterBytes + Eq, B: ToStr> ToStr for LruCache<A, B> {
+impl<A: ToStr + Hash + Eq, B: ToStr> ToStr for LruCache<A, B> {
     /// Return a string that lists the key-value pairs from most-recently
     /// used to least-recently used.
     #[inline]
@@ -250,14 +250,14 @@ impl<A: ToStr + IterBytes + Eq, B: ToStr> ToStr for LruCache<A, B> {
     }
 }
 
-impl<K: IterBytes + Eq, V> Container for LruCache<K, V> {
+impl<K: Hash + Eq, V> Container for LruCache<K, V> {
     /// Return the number of key-value pairs in the cache.
     fn len(&self) -> uint {
         self.map.len()
     }
 }
 
-impl<K: IterBytes + Eq, V> Mutable for LruCache<K, V> {
+impl<K: Hash + Eq, V> Mutable for LruCache<K, V> {
     /// Clear the cache of all key-value pairs.
     fn clear(&mut self) {
         self.map.clear();

src/libextra/stats.rs

@@ -11,7 +11,7 @@
 #[allow(missing_doc)];
 
 use std::cmp;
-use std::hash_old::Hash;
+use std::hash::Hash;
 use std::io;
 use std::mem;
 use std::num;

src/libextra/url.rs

@@ -15,7 +15,7 @@
 use std::io::BufReader;
 use std::cmp::Eq;
 use collections::HashMap;
-use std::to_bytes;
+use std::hash::{Hash, sip};
 use std::uint;
 
 /// A Uniform Resource Locator (URL).  A URL is a form of URI (Uniform Resource
@@ -855,15 +855,15 @@ impl ToStr for Path {
     }
 }
 
-impl IterBytes for Url {
-    fn iter_bytes(&self, lsb0: bool, f: to_bytes::Cb) -> bool {
-        self.to_str().iter_bytes(lsb0, f)
+impl Hash for Url {
+    fn hash(&self, s: &mut sip::SipState) {
+        self.to_str().hash(s)
     }
 }
 
-impl IterBytes for Path {
-    fn iter_bytes(&self, lsb0: bool, f: to_bytes::Cb) -> bool {
-        self.to_str().iter_bytes(lsb0, f)
+impl Hash for Path {
+    fn hash(&self, s: &mut sip::SipState) {
+        self.to_str().hash(s)
     }
 }
 

src/libglob/lib.rs

@@ -165,12 +165,12 @@ fn list_dir_sorted(path: &Path) -> ~[Path] {
 /**
  * A compiled Unix shell style pattern.
  */
-#[deriving(Clone, Eq, TotalEq, Ord, TotalOrd, IterBytes, Default)]
+#[deriving(Clone, Eq, TotalEq, Ord, TotalOrd, Hash, Default)]
 pub struct Pattern {
     priv tokens: ~[PatternToken]
 }
 
-#[deriving(Clone, Eq, TotalEq, Ord, TotalOrd, IterBytes)]
+#[deriving(Clone, Eq, TotalEq, Ord, TotalOrd, Hash)]
 enum PatternToken {
     Char(char),
     AnyChar,
@@ -179,7 +179,7 @@ enum PatternToken {
     AnyExcept(~[CharSpecifier])
 }
 
-#[deriving(Clone, Eq, TotalEq, Ord, TotalOrd, IterBytes)]
+#[deriving(Clone, Eq, TotalEq, Ord, TotalOrd, Hash)]
 enum CharSpecifier {
     SingleChar(char),
     CharRange(char, char)
@@ -490,7 +490,7 @@ fn chars_eq(a: char, b: char, case_sensitive: bool) -> bool {
 /**
  * Configuration options to modify the behaviour of `Pattern::matches_with(..)`
  */
-#[deriving(Clone, Eq, TotalEq, Ord, TotalOrd, IterBytes, Default)]
+#[deriving(Clone, Eq, TotalEq, Ord, TotalOrd, Hash, Default)]
 pub struct MatchOptions {
 
     /**

src/librustc/metadata/decoder.rs

@@ -27,7 +27,8 @@ use middle::typeck;
 use middle::astencode::vtable_decoder_helpers;
 
 use std::u64;
-use std::hash_old::Hash;
+use std::hash;
+use std::hash::Hash;
 use std::io;
 use std::io::extensions::u64_from_be_bytes;
 use std::option;
@@ -86,7 +87,7 @@ pub fn maybe_find_item<'a>(item_id: ast::NodeId,
     }
     lookup_hash(items,
                 |a| eq_item(a, item_id),
-                (item_id as i64).hash())
+                hash::hash(&(item_id as i64)))
 }
 
 fn find_item<'a>(item_id: ast::NodeId, items: ebml::Doc<'a>) -> ebml::Doc<'a> {

src/librustc/metadata/encoder.rs

@@ -26,7 +26,8 @@ use middle;
 use serialize::Encodable;
 use std::cast;
 use std::cell::{Cell, RefCell};
-use std::hash_old::Hash;
+use std::hash;
+use std::hash::Hash;
 use std::io::MemWriter;
 use std::str;
 use collections::{HashMap, HashSet};
@@ -1380,7 +1381,7 @@ fn encode_info_for_items(ecx: &EncodeContext,
 
 // Path and definition ID indexing
 
-fn create_index<T:Clone + Hash + IterBytes + 'static>(
+fn create_index<T:Clone + Hash + 'static>(
                 index: ~[entry<T>])
                 -> ~[@~[entry<T>]] {
     let mut buckets: ~[@RefCell<~[entry<T>]>] = ~[];
@@ -1388,7 +1389,7 @@ fn create_index<T:Clone + Hash + IterBytes + 'static>(
         buckets.push(@RefCell::new(~[]));
     }
     for elt in index.iter() {
-        let h = elt.val.hash() as uint;
+        let h = hash::hash(&elt.val) as uint;
         let mut bucket = buckets[h % 256].borrow_mut();
         bucket.get().push((*elt).clone());
     }

src/librustc/middle/borrowck/mod.rs

@@ -186,7 +186,7 @@ pub struct BorrowStats {
 //
 // Note that there is no entry with derefs:3---the type of that expression
 // is T, which is not a box.
-#[deriving(Eq, IterBytes)]
+#[deriving(Eq, Hash)]
 pub struct root_map_key {
     id: ast::NodeId,
     derefs: uint
@@ -224,13 +224,13 @@ pub enum LoanCause {
     RefBinding,
 }
 
-#[deriving(Eq, IterBytes)]
+#[deriving(Eq, Hash)]
 pub enum LoanPath {
     LpVar(ast::NodeId),               // `x` in doc.rs
     LpExtend(@LoanPath, mc::MutabilityCategory, LoanPathElem)
 }
 
-#[deriving(Eq, IterBytes)]
+#[deriving(Eq, Hash)]
 pub enum LoanPathElem {
     LpDeref(mc::PointerKind),    // `*LV` in doc.rs
     LpInterior(mc::InteriorKind) // `LV.f` in doc.rs

src/librustc/middle/mem_categorization.rs

@@ -94,7 +94,7 @@ pub struct CopiedUpvar {
 }
 
 // different kinds of pointers:
-#[deriving(Eq, IterBytes)]
+#[deriving(Eq, Hash)]
 pub enum PointerKind {
     OwnedPtr,
     GcPtr,
@@ -104,26 +104,26 @@ pub enum PointerKind {
 
 // We use the term "interior" to mean "something reachable from the
 // base without a pointer dereference", e.g. a field
-#[deriving(Eq, IterBytes)]
+#[deriving(Eq, Hash)]
 pub enum InteriorKind {
     InteriorField(FieldName),
     InteriorElement(ElementKind),
 }
 
-#[deriving(Eq, IterBytes)]
+#[deriving(Eq, Hash)]
 pub enum FieldName {
     NamedField(ast::Name),
     PositionalField(uint)
 }
 
-#[deriving(Eq, IterBytes)]
+#[deriving(Eq, Hash)]
 pub enum ElementKind {
     VecElement,
     StrElement,
     OtherElement,
 }
 
-#[deriving(Eq, IterBytes)]
+#[deriving(Eq, Hash)]
 pub enum MutabilityCategory {
     McImmutable, // Immutable.
     McDeclared,  // Directly declared as mutable.

src/librustc/middle/resolve.rs

@@ -105,7 +105,7 @@ enum PatternBindingMode {
     ArgumentIrrefutableMode,
 }
 
-#[deriving(Eq, IterBytes)]
+#[deriving(Eq, Hash)]
 enum Namespace {
     TypeNS,
     ValueNS

src/librustc/middle/trans/common.rs

@@ -722,7 +722,7 @@ pub fn is_null(val: ValueRef) -> bool {
 }
 
 // Used to identify cached monomorphized functions and vtables
-#[deriving(Eq,IterBytes)]
+#[deriving(Eq,Hash)]
 pub enum mono_param_id {
     mono_precise(ty::t, Option<@~[mono_id]>),
     mono_any,
@@ -732,7 +732,7 @@ pub enum mono_param_id {
               datum::RvalueMode),
 }
 
-#[deriving(Eq,IterBytes)]
+#[deriving(Eq,Hash)]
 pub enum MonoDataClass {
     MonoBits,    // Anything not treated differently from arbitrary integer data
     MonoNonNull, // Non-null pointers (used for optional-pointer optimization)
@@ -755,7 +755,7 @@ pub fn mono_data_classify(t: ty::t) -> MonoDataClass {
 }
 
 
-#[deriving(Eq,IterBytes)]
+#[deriving(Eq,Hash)]
 pub struct mono_id_ {
     def: ast::DefId,
     params: ~[mono_param_id]

src/librustc/middle/trans/datum.rs

@@ -82,7 +82,7 @@ impl Drop for Rvalue {
     fn drop(&mut self) { }
 }
 
-#[deriving(Eq, IterBytes)]
+#[deriving(Eq, Hash)]
 pub enum RvalueMode {
     /// `val` is a pointer to the actual value (and thus has type *T)
     ByRef,

src/librustc/middle/ty.rs

@@ -33,9 +33,9 @@ use util::common::{indenter};
 use std::cast;
 use std::cell::{Cell, RefCell};
 use std::cmp;
+use std::hash::{Hash, sip};
 use std::ops;
 use std::rc::Rc;
-use std::to_bytes;
 use std::to_str::ToStr;
 use std::vec;
 use collections::{HashMap, HashSet};
@@ -60,7 +60,7 @@ pub static INITIAL_DISCRIMINANT_VALUE: Disr = 0;
 
 // Data types
 
-#[deriving(Eq, IterBytes)]
+#[deriving(Eq, Hash)]
 pub struct field {
     ident: ast::Ident,
     mt: mt
@@ -122,20 +122,20 @@ pub struct Impl {
     methods: ~[@Method]
 }
 
-#[deriving(Clone, Eq, IterBytes)]
+#[deriving(Clone, Eq, Hash)]
 pub struct mt {
     ty: t,
     mutbl: ast::Mutability,
 }
 
-#[deriving(Clone, Eq, Encodable, Decodable, IterBytes, ToStr)]
+#[deriving(Clone, Eq, Encodable, Decodable, Hash, ToStr)]
 pub enum vstore {
     vstore_fixed(uint),
     vstore_uniq,
     vstore_slice(Region)
 }
 
-#[deriving(Clone, Eq, IterBytes, Encodable, Decodable, ToStr)]
+#[deriving(Clone, Eq, Hash, Encodable, Decodable, ToStr)]
 pub enum TraitStore {
     UniqTraitStore,             // ~Trait
     RegionTraitStore(Region),   // &Trait
@@ -149,7 +149,7 @@ pub struct field_ty {
 
 // Contains information needed to resolve types and (in the future) look up
 // the types of AST nodes.
-#[deriving(Eq,IterBytes)]
+#[deriving(Eq,Hash)]
 pub struct creader_cache_key {
     cnum: CrateNum,
     pos: uint,
@@ -176,12 +176,10 @@ impl cmp::Eq for intern_key {
     }
 }
 
-// NB: Do not replace this with #[deriving(IterBytes)], as above. (Figured
-// this out the hard way.)
-impl to_bytes::IterBytes for intern_key {
-    fn iter_bytes(&self, lsb0: bool, f: to_bytes::Cb) -> bool {
+impl Hash for intern_key {
+    fn hash(&self, s: &mut sip::SipState) {
         unsafe {
-            (*self.sty).iter_bytes(lsb0, f)
+            (*self.sty).hash(s)
         }
     }
 }
@@ -416,14 +414,14 @@ pub fn type_has_regions(t: t) -> bool {
 }
 pub fn type_id(t: t) -> uint { get(t).id }
 
-#[deriving(Clone, Eq, IterBytes)]
+#[deriving(Clone, Eq, Hash)]
 pub struct BareFnTy {
     purity: ast::Purity,
     abis: AbiSet,
     sig: FnSig
 }
 
-#[deriving(Clone, Eq, IterBytes)]
+#[deriving(Clone, Eq, Hash)]
 pub struct ClosureTy {
     purity: ast::Purity,
     sigil: ast::Sigil,
@@ -445,7 +443,7 @@ pub struct ClosureTy {
  * - `output` is the return type.
  * - `variadic` indicates whether this is a varidic function. (only true for foreign fns)
  */
-#[deriving(Clone, Eq, IterBytes)]
+#[deriving(Clone, Eq, Hash)]
 pub struct FnSig {
     binder_id: ast::NodeId,
     inputs: ~[t],
@@ -453,14 +451,14 @@ pub struct FnSig {
     variadic: bool
 }
 
-#[deriving(Clone, Eq, IterBytes)]
+#[deriving(Clone, Eq, Hash)]
 pub struct param_ty {
     idx: uint,
     def_id: DefId
 }
 
 /// Representation of regions:
-#[deriving(Clone, Eq, IterBytes, Encodable, Decodable, ToStr, Show)]
+#[deriving(Clone, Eq, Hash, Encodable, Decodable, ToStr, Show)]
 pub enum Region {
     // Region bound in a type or fn declaration which will be
     // substituted 'early' -- that is, at the same time when type
@@ -501,13 +499,13 @@ pub enum Region {
  * the original var id (that is, the root variable that is referenced
  * by the upvar) and the id of the closure expression.
  */
-#[deriving(Clone, Eq, IterBytes)]
+#[deriving(Clone, Eq, Hash)]
 pub struct UpvarId {
     var_id: ast::NodeId,
     closure_expr_id: ast::NodeId,
 }
 
-#[deriving(Clone, Eq, IterBytes)]
+#[deriving(Clone, Eq, Hash)]
 pub enum BorrowKind {
     /// Data must be immutable and is aliasable.
     ImmBorrow,
@@ -620,13 +618,13 @@ impl Region {
     }
 }
 
-#[deriving(Clone, Eq, TotalOrd, TotalEq, IterBytes, Encodable, Decodable, ToStr, Show)]
+#[deriving(Clone, Eq, TotalOrd, TotalEq, Hash, Encodable, Decodable, ToStr, Show)]
 pub struct FreeRegion {
     scope_id: NodeId,
     bound_region: BoundRegion
 }
 
-#[deriving(Clone, Eq, TotalEq, TotalOrd, IterBytes, Encodable, Decodable, ToStr, Show)]
+#[deriving(Clone, Eq, TotalEq, TotalOrd, Hash, Encodable, Decodable, ToStr, Show)]
 pub enum BoundRegion {
     /// An anonymous region parameter for a given fn (&T)
     BrAnon(uint),
@@ -645,7 +643,7 @@ pub enum BoundRegion {
  * Represents the values to use when substituting lifetime parameters.
  * If the value is `ErasedRegions`, then this subst is occurring during
  * trans, and all region parameters will be replaced with `ty::ReStatic`. */
-#[deriving(Clone, Eq, IterBytes)]
+#[deriving(Clone, Eq, Hash)]
 pub enum RegionSubsts {
     ErasedRegions,
     NonerasedRegions(OptVec<ty::Region>)
@@ -668,7 +666,7 @@ pub enum RegionSubsts {
  * - `self_ty` is the type to which `self` should be remapped, if any.  The
  *   `self` type is rather funny in that it can only appear on traits and is
  *   always substituted away to the implementing type for a trait. */
-#[deriving(Clone, Eq, IterBytes)]
+#[deriving(Clone, Eq, Hash)]
 pub struct substs {
     self_ty: Option<ty::t>,
     tps: ~[t],
@@ -723,7 +721,7 @@ mod primitives {
 
 // NB: If you change this, you'll probably want to change the corresponding
 // AST structure in libsyntax/ast.rs as well.
-#[deriving(Clone, Eq, IterBytes)]
+#[deriving(Clone, Eq, Hash)]
 pub enum sty {
     ty_nil,
     ty_bot,
@@ -758,7 +756,7 @@ pub enum sty {
     ty_unboxed_vec(mt),
 }
 
-#[deriving(Eq, IterBytes)]
+#[deriving(Eq, Hash)]
 pub struct TraitRef {
     def_id: DefId,
     substs: substs
@@ -820,7 +818,7 @@ pub enum type_err {
     terr_variadic_mismatch(expected_found<bool>)
 }
 
-#[deriving(Eq, IterBytes)]
+#[deriving(Eq, Hash)]
 pub struct ParamBounds {
     builtin_bounds: BuiltinBounds,
     trait_bounds: ~[@TraitRef]
@@ -828,7 +826,7 @@ pub struct ParamBounds {
 
 pub type BuiltinBounds = EnumSet<BuiltinBound>;
 
-#[deriving(Clone, Encodable, Eq, Decodable, IterBytes, ToStr)]
+#[deriving(Clone, Encodable, Eq, Decodable, Hash, ToStr)]
 #[repr(uint)]
 pub enum BuiltinBound {
     BoundStatic,
@@ -860,28 +858,28 @@ impl CLike for BuiltinBound {
     }
 }
 
-#[deriving(Clone, Eq, IterBytes)]
+#[deriving(Clone, Eq, Hash)]
 pub struct TyVid(uint);
 
-#[deriving(Clone, Eq, IterBytes)]
+#[deriving(Clone, Eq, Hash)]
 pub struct IntVid(uint);
 
-#[deriving(Clone, Eq, IterBytes)]
+#[deriving(Clone, Eq, Hash)]
 pub struct FloatVid(uint);
 
-#[deriving(Clone, Eq, Encodable, Decodable, IterBytes, Show)]
+#[deriving(Clone, Eq, Encodable, Decodable, Hash, Show)]
 pub struct RegionVid {
     id: uint
 }
 
-#[deriving(Clone, Eq, IterBytes)]
+#[deriving(Clone, Eq, Hash)]
 pub enum InferTy {
     TyVar(TyVid),
     IntVar(IntVid),
     FloatVar(FloatVid)
 }
 
-#[deriving(Clone, Encodable, Decodable, IterBytes, ToStr, Show)]
+#[deriving(Clone, Encodable, Decodable, Hash, ToStr, Show)]
 pub enum InferRegion {
     ReVar(RegionVid),
     ReSkolemized(uint, BoundRegion)
@@ -4916,10 +4914,13 @@ pub fn trait_method_of_method(tcx: ctxt,
 /// Creates a hash of the type `t` which will be the same no matter what crate
 /// context it's calculated within. This is used by the `type_id` intrinsic.
 pub fn hash_crate_independent(tcx: ctxt, t: t, local_hash: ~str) -> u64 {
-    use std::hash_old::{SipState, Streaming};
+    use std::hash::{sip, Hash};
 
-    let mut hash = SipState::new(0, 0);
-    let region = |_hash: &mut SipState, r: Region| {
+    let mut hash = sip::SipState::new(0, 0);
+    macro_rules! byte( ($b:expr) => { ($b as u8).hash(&mut hash) } );
+    macro_rules! hash( ($e:expr) => { $e.hash(&mut hash) } );
+
+    let region = |_hash: &mut sip::SipState, r: Region| {
         match r {
             ReStatic => {}
 
@@ -4933,130 +4934,127 @@ pub fn hash_crate_independent(tcx: ctxt, t: t, local_hash: ~str) -> u64 {
             }
         }
     };
-    let vstore = |hash: &mut SipState, v: vstore| {
+    let vstore = |hash: &mut sip::SipState, v: vstore| {
         match v {
-            vstore_fixed(_) => hash.input([0]),
-            vstore_uniq => hash.input([1]),
+            vstore_fixed(_) => 0u8.hash(hash),
+            vstore_uniq => 1u8.hash(hash),
             vstore_slice(r) => {
-                hash.input([3]);
+                2u8.hash(hash);
                 region(hash, r);
             }
         }
     };
-    let did = |hash: &mut SipState, did: DefId| {
+    let did = |hash: &mut sip::SipState, did: DefId| {
         let h = if ast_util::is_local(did) {
             local_hash.clone()
         } else {
             tcx.sess.cstore.get_crate_hash(did.krate)
         };
-        hash.input(h.as_bytes());
-        iter(hash, &did.node);
+        h.as_bytes().hash(hash);
+        did.node.hash(hash);
     };
-    let mt = |hash: &mut SipState, mt: mt| {
-        iter(hash, &mt.mutbl);
+    let mt = |hash: &mut sip::SipState, mt: mt| {
+        mt.mutbl.hash(hash);
     };
-    fn iter<T: IterBytes>(hash: &mut SipState, t: &T) {
-        t.iter_bytes(true, |bytes| { hash.input(bytes); true });
-    }
     ty::walk_ty(t, |t| {
         match ty::get(t).sty {
-            ty_nil => hash.input([0]),
-            ty_bot => hash.input([1]),
-            ty_bool => hash.input([2]),
-            ty_char => hash.input([3]),
+            ty_nil => byte!(0),
+            ty_bot => byte!(1),
+            ty_bool => byte!(2),
+            ty_char => byte!(3),
             ty_int(i) => {
-                hash.input([4]);
-                iter(&mut hash, &i);
+                byte!(4);
+                hash!(i);
             }
             ty_uint(u) => {
-                hash.input([5]);
-                iter(&mut hash, &u);
+                byte!(5);
+                hash!(u);
             }
             ty_float(f) => {
-                hash.input([6]);
-                iter(&mut hash, &f);
+                byte!(6);
+                hash!(f);
             }
             ty_str(v) => {
-                hash.input([7]);
-                vstore(&mut hash, v);
+                byte!(7);
+                hash!(v);
             }
             ty_enum(d, _) => {
-                hash.input([8]);
-                did(&mut hash, d);
+                byte!(8);
+                hash!(d)
             }
             ty_box(_) => {
-                hash.input([9]);
+                byte!(9);
             }
             ty_uniq(_) => {
-                hash.input([10]);
+                byte!(10);
             }
             ty_vec(m, v) => {
-                hash.input([11]);
+                byte!(11);
                 mt(&mut hash, m);
                 vstore(&mut hash, v);
             }
             ty_ptr(m) => {
-                hash.input([12]);
+                byte!(12);
                 mt(&mut hash, m);
             }
             ty_rptr(r, m) => {
-                hash.input([13]);
+                byte!(13);
                 region(&mut hash, r);
                 mt(&mut hash, m);
             }
             ty_bare_fn(ref b) => {
-                hash.input([14]);
-                iter(&mut hash, &b.purity);
-                iter(&mut hash, &b.abis);
+                byte!(14);
+                hash!(b.purity);
+                hash!(b.abis);
             }
             ty_closure(ref c) => {
-                hash.input([15]);
-                iter(&mut hash, &c.purity);
-                iter(&mut hash, &c.sigil);
-                iter(&mut hash, &c.onceness);
-                iter(&mut hash, &c.bounds);
+                byte!(15);
+                hash!(c.purity);
+                hash!(c.sigil);
+                hash!(c.onceness);
+                hash!(c.bounds);
                 region(&mut hash, c.region);
             }
             ty_trait(d, _, store, m, bounds) => {
-                hash.input([17]);
+                byte!(17);
                 did(&mut hash, d);
                 match store {
-                    UniqTraitStore => hash.input([0]),
+                    UniqTraitStore => byte!(0),
                     RegionTraitStore(r) => {
-                        hash.input([1]);
+                        byte!(1)
                         region(&mut hash, r);
                     }
                 }
-                iter(&mut hash, &m);
-                iter(&mut hash, &bounds);
+                hash!(m);
+                hash!(bounds);
             }
             ty_struct(d, _) => {
-                hash.input([18]);
+                byte!(18);
                 did(&mut hash, d);
             }
             ty_tup(ref inner) => {
-                hash.input([19]);
-                iter(&mut hash, &inner.len());
+                byte!(19);
+                hash!(inner.len());
             }
             ty_param(p) => {
-                hash.input([20]);
-                iter(&mut hash, &p.idx);
+                byte!(20);
+                hash!(p.idx);
                 did(&mut hash, p.def_id);
             }
             ty_self(d) => {
-                hash.input([21]);
+                byte!(21);
                 did(&mut hash, d);
             }
             ty_infer(_) => unreachable!(),
-            ty_err => hash.input([23]),
+            ty_err => byte!(23),
             ty_unboxed_vec(m) => {
-                hash.input([24]);
+                byte!(24);
                 mt(&mut hash, m);
             }
         }
     });
 
-    hash.result_u64()
+    hash.result()
 }
 
 impl Variance {

src/librustc/middle/typeck/infer/region_inference/mod.rs

@@ -34,7 +34,7 @@ use syntax::opt_vec::OptVec;
 
 mod doc;
 
-#[deriving(Eq, IterBytes)]
+#[deriving(Eq, Hash)]
 enum Constraint {
     ConstrainVarSubVar(RegionVid, RegionVid),
     ConstrainRegSubVar(Region, RegionVid),
@@ -42,7 +42,7 @@ enum Constraint {
     ConstrainRegSubReg(Region, Region),
 }
 
-#[deriving(Eq, IterBytes)]
+#[deriving(Eq, Hash)]
 struct TwoRegions {
     a: Region,
     b: Region,

src/libstd/ascii.rs

@@ -18,9 +18,9 @@ use str::OwnedStr;
 use container::Container;
 use cast;
 use fmt;
+use hash::{Hash, sip};
 use iter::Iterator;
 use vec::{ImmutableVector, MutableVector, Vector};
-use to_bytes::IterBytes;
 use option::{Option, Some, None};
 
 /// Datatype to hold one ascii character. It wraps a `u8`, with the highest bit always zero.
@@ -314,10 +314,10 @@ impl IntoStr for ~[Ascii] {
     }
 }
 
-impl IterBytes for Ascii {
+impl Hash for Ascii {
     #[inline]
-    fn iter_bytes(&self, _lsb0: bool, f: |buf: &[u8]| -> bool) -> bool {
-        f([self.to_byte()])
+    fn hash(&self, s: &mut sip::SipState) {
+        self.to_byte().hash(s)
     }
 }
 

src/libstd/fmt/parse.rs

@@ -121,7 +121,7 @@ pub enum Method<'a> {
 }
 
 /// A selector for what pluralization a plural method should take
-#[deriving(Eq, IterBytes)]
+#[deriving(Eq, Hash)]
 pub enum PluralSelector {
     /// One of the plural keywords should be used
     Keyword(PluralKeyword),
@@ -143,7 +143,7 @@ pub struct PluralArm<'a> {
 /// specially placed in the `Plural` variant of `Method`
 ///
 /// http://www.icu-project.org/apiref/icu4c/classicu_1_1PluralRules.html
-#[deriving(Eq, IterBytes)]
+#[deriving(Eq, Hash)]
 #[allow(missing_doc)]
 pub enum PluralKeyword {
     Zero, One, Two, Few, Many

src/libstd/hash_old.rs

@@ -1,510 +0,0 @@
-// Copyright 2012 The Rust Project Developers. See the COPYRIGHT
-// file at the top-level directory of this distribution and at
-// http://rust-lang.org/COPYRIGHT.
-//
-// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
-// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
-// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
-// option. This file may not be copied, modified, or distributed
-// except according to those terms.
-
-/*!
- * Implementation of SipHash 2-4
- *
- * See: http://131002.net/siphash/
- *
- * Consider this as a main "general-purpose" hash for all hashtables: it
- * runs at good speed (competitive with spooky and city) and permits
- * strong _keyed_ hashing. Key your hashtables from a strong RNG,
- * such as rand::rng.
- *
- * Although the SipHash algorithm is considered to be cryptographically
- * strong, this implementation has not been reviewed for such purposes.
- * As such, all cryptographic uses of this implementation are strongly
- * discouraged.
- */
-
-#[allow(missing_doc)];
-
-use container::Container;
-use io::{Writer, IoResult};
-use iter::Iterator;
-use option::{Some, None};
-use result::Ok;
-use str::OwnedStr;
-use to_bytes::IterBytes;
-use vec::ImmutableVector;
-
-// Alias `SipState` to `State`.
-pub use State = hash_old::SipState;
-
-/**
- * Types that can meaningfully be hashed should implement this.
- *
- * Note that this trait is likely to change somewhat as it is
- * closely related to `to_bytes::IterBytes` and in almost all
- * cases presently the two are (and must be) used together.
- *
- * In general, most types only need to implement `IterBytes`,
- * and the implementation of `Hash` below will take care of
- * the rest. This is the recommended approach, since constructing
- * good keyed hash functions is quite difficult.
- */
-pub trait Hash {
-    /**
-     * Compute a "keyed" hash of the value implementing the trait,
-     * taking `k0` and `k1` as "keying" parameters that randomize or
-     * otherwise perturb the hash function in such a way that a
-     * hash table built using such "keyed hash functions" cannot
-     * be made to perform linearly by an attacker controlling the
-     * hashtable's contents.
-     *
-     * In practical terms, we implement this using the SipHash 2-4
-     * function and require most types to only implement the
-     * IterBytes trait, that feeds SipHash.
-     */
-    fn hash_keyed(&self, k0: u64, k1: u64) -> u64;
-
-    #[inline]
-    fn hash(&self) -> u64 { self.hash_keyed(0,0) }
-}
-
-/// Streaming hash-functions should implement this.
-pub trait Streaming {
-    fn input(&mut self, &[u8]);
-    // These can be refactored some when we have default methods.
-    fn result_bytes(&mut self) -> ~[u8];
-    fn result_str(&mut self) -> ~str;
-    fn result_u64(&mut self) -> u64;
-    fn reset(&mut self);
-}
-
-impl<A:IterBytes> Hash for A {
-    #[inline]
-    fn hash_keyed(&self, k0: u64, k1: u64) -> u64 {
-        let mut s = State::new(k0, k1);
-        self.iter_bytes(true, |bytes| {
-            s.input(bytes);
-            true
-        });
-        s.result_u64()
-    }
-}
-
-#[inline]
-pub fn default_state() -> State {
-    State::new(0, 0)
-}
-
-struct SipState {
-    k0: u64,
-    k1: u64,
-    length: uint, // how many bytes we've processed
-    v0: u64,      // hash state
-    v1: u64,
-    v2: u64,
-    v3: u64,
-    tail: [u8, ..8], // unprocessed bytes
-    ntail: uint,  // how many bytes in tail are valid
-}
-
-impl SipState {
-    #[inline]
-    fn new(key0: u64, key1: u64) -> SipState {
-        let mut state = SipState {
-            k0: key0,
-            k1: key1,
-            length: 0,
-            v0: 0,
-            v1: 0,
-            v2: 0,
-            v3: 0,
-            tail: [ 0, 0, 0, 0, 0, 0, 0, 0 ],
-            ntail: 0,
-        };
-        state.reset();
-        state
-    }
-}
-
-// sadly, these macro definitions can't appear later,
-// because they're needed in the following defs;
-// this design could be improved.
-
-macro_rules! u8to64_le (
-    ($buf:expr, $i:expr) =>
-    ($buf[0+$i] as u64 |
-     $buf[1+$i] as u64 << 8 |
-     $buf[2+$i] as u64 << 16 |
-     $buf[3+$i] as u64 << 24 |
-     $buf[4+$i] as u64 << 32 |
-     $buf[5+$i] as u64 << 40 |
-     $buf[6+$i] as u64 << 48 |
-     $buf[7+$i] as u64 << 56)
-)
-
-macro_rules! rotl (
-    ($x:expr, $b:expr) =>
-    (($x << $b) | ($x >> (64 - $b)))
-)
-
-macro_rules! compress (
-    ($v0:expr, $v1:expr, $v2:expr, $v3:expr) =>
-    ({
-        $v0 += $v1; $v1 = rotl!($v1, 13); $v1 ^= $v0;
-        $v0 = rotl!($v0, 32);
-        $v2 += $v3; $v3 = rotl!($v3, 16); $v3 ^= $v2;
-        $v0 += $v3; $v3 = rotl!($v3, 21); $v3 ^= $v0;
-        $v2 += $v1; $v1 = rotl!($v1, 17); $v1 ^= $v2;
-        $v2 = rotl!($v2, 32);
-    })
-)
-
-
-impl Writer for SipState {
-    // Methods for io::writer
-    #[inline]
-    fn write(&mut self, msg: &[u8]) -> IoResult<()> {
-        let length = msg.len();
-        self.length += length;
-
-        let mut needed = 0u;
-
-        if self.ntail != 0 {
-            needed = 8 - self.ntail;
-
-            if length < needed {
-                let mut t = 0;
-                while t < length {
-                    self.tail[self.ntail+t] = msg[t];
-                    t += 1;
-                }
-                self.ntail += length;
-                return Ok(())
-            }
-
-            let mut t = 0;
-            while t < needed {
-                self.tail[self.ntail+t] = msg[t];
-                t += 1;
-            }
-
-            let m = u8to64_le!(self.tail, 0);
-
-            self.v3 ^= m;
-            compress!(self.v0, self.v1, self.v2, self.v3);
-            compress!(self.v0, self.v1, self.v2, self.v3);
-            self.v0 ^= m;
-
-            self.ntail = 0;
-        }
-
-        // Buffered tail is now flushed, process new input.
-        let len = length - needed;
-        let end = len & (!0x7);
-        let left = len & 0x7;
-
-        let mut i = needed;
-        while i < end {
-            let mi = u8to64_le!(msg, i);
-
-            self.v3 ^= mi;
-            compress!(self.v0, self.v1, self.v2, self.v3);
-            compress!(self.v0, self.v1, self.v2, self.v3);
-            self.v0 ^= mi;
-
-            i += 8;
-        }
-
-        let mut t = 0u;
-        while t < left {
-            self.tail[t] = msg[i+t];
-            t += 1
-        }
-        self.ntail = left;
-        Ok(())
-    }
-}
-
-impl Streaming for SipState {
-    #[inline]
-    fn input(&mut self, buf: &[u8]) {
-        self.write(buf).unwrap();
-    }
-
-    #[inline]
-    fn result_u64(&mut self) -> u64 {
-        let mut v0 = self.v0;
-        let mut v1 = self.v1;
-        let mut v2 = self.v2;
-        let mut v3 = self.v3;
-
-        let mut b : u64 = (self.length as u64 & 0xff) << 56;
-
-        if self.ntail > 0 { b |= self.tail[0] as u64 <<  0; }
-        if self.ntail > 1 { b |= self.tail[1] as u64 <<  8; }
-        if self.ntail > 2 { b |= self.tail[2] as u64 << 16; }
-        if self.ntail > 3 { b |= self.tail[3] as u64 << 24; }
-        if self.ntail > 4 { b |= self.tail[4] as u64 << 32; }
-        if self.ntail > 5 { b |= self.tail[5] as u64 << 40; }
-        if self.ntail > 6 { b |= self.tail[6] as u64 << 48; }
-
-        v3 ^= b;
-        compress!(v0, v1, v2, v3);
-        compress!(v0, v1, v2, v3);
-        v0 ^= b;
-
-        v2 ^= 0xff;
-        compress!(v0, v1, v2, v3);
-        compress!(v0, v1, v2, v3);
-        compress!(v0, v1, v2, v3);
-        compress!(v0, v1, v2, v3);
-
-        return v0 ^ v1 ^ v2 ^ v3;
-    }
-
-    fn result_bytes(&mut self) -> ~[u8] {
-        let h = self.result_u64();
-        ~[(h >> 0) as u8,
-          (h >> 8) as u8,
-          (h >> 16) as u8,
-          (h >> 24) as u8,
-          (h >> 32) as u8,
-          (h >> 40) as u8,
-          (h >> 48) as u8,
-          (h >> 56) as u8,
-        ]
-    }
-
-    fn result_str(&mut self) -> ~str {
-        let r = self.result_bytes();
-        let mut s = ~"";
-        for b in r.iter() {
-            s.push_str(format!("{:x}", *b));
-        }
-        s
-    }
-
-    #[inline]
-    fn reset(&mut self) {
-        self.length = 0;
-        self.v0 = self.k0 ^ 0x736f6d6570736575;
-        self.v1 = self.k1 ^ 0x646f72616e646f6d;
-        self.v2 = self.k0 ^ 0x6c7967656e657261;
-        self.v3 = self.k1 ^ 0x7465646279746573;
-        self.ntail = 0;
-    }
-}
-
-#[cfg(test)]
-mod tests {
-    use super::{Hash, Streaming, SipState};
-    use iter::Iterator;
-    use num::ToStrRadix;
-    use option::Some;
-    use str::OwnedStr;
-    use to_bytes::IterBytes;
-    use vec::{Vector, OwnedVector, ImmutableVector};
-
-    // Hash just the bytes of the slice, without length prefix
-    struct Bytes<'a>(&'a [u8]);
-    impl<'a> IterBytes for Bytes<'a> {
-        fn iter_bytes(&self, _lsb0: bool, f: |&[u8]| -> bool) -> bool {
-            let Bytes(v) = *self;
-            f(v)
-        }
-    }
-
-    #[test]
-    fn test_siphash() {
-        let vecs : [[u8, ..8], ..64] = [
-            [ 0x31, 0x0e, 0x0e, 0xdd, 0x47, 0xdb, 0x6f, 0x72, ],
-            [ 0xfd, 0x67, 0xdc, 0x93, 0xc5, 0x39, 0xf8, 0x74, ],
-            [ 0x5a, 0x4f, 0xa9, 0xd9, 0x09, 0x80, 0x6c, 0x0d, ],
-            [ 0x2d, 0x7e, 0xfb, 0xd7, 0x96, 0x66, 0x67, 0x85, ],
-            [ 0xb7, 0x87, 0x71, 0x27, 0xe0, 0x94, 0x27, 0xcf, ],
-            [ 0x8d, 0xa6, 0x99, 0xcd, 0x64, 0x55, 0x76, 0x18, ],
-            [ 0xce, 0xe3, 0xfe, 0x58, 0x6e, 0x46, 0xc9, 0xcb, ],
-            [ 0x37, 0xd1, 0x01, 0x8b, 0xf5, 0x00, 0x02, 0xab, ],
-            [ 0x62, 0x24, 0x93, 0x9a, 0x79, 0xf5, 0xf5, 0x93, ],
-            [ 0xb0, 0xe4, 0xa9, 0x0b, 0xdf, 0x82, 0x00, 0x9e, ],
-            [ 0xf3, 0xb9, 0xdd, 0x94, 0xc5, 0xbb, 0x5d, 0x7a, ],
-            [ 0xa7, 0xad, 0x6b, 0x22, 0x46, 0x2f, 0xb3, 0xf4, ],
-            [ 0xfb, 0xe5, 0x0e, 0x86, 0xbc, 0x8f, 0x1e, 0x75, ],
-            [ 0x90, 0x3d, 0x84, 0xc0, 0x27, 0x56, 0xea, 0x14, ],
-            [ 0xee, 0xf2, 0x7a, 0x8e, 0x90, 0xca, 0x23, 0xf7, ],
-            [ 0xe5, 0x45, 0xbe, 0x49, 0x61, 0xca, 0x29, 0xa1, ],
-            [ 0xdb, 0x9b, 0xc2, 0x57, 0x7f, 0xcc, 0x2a, 0x3f, ],
-            [ 0x94, 0x47, 0xbe, 0x2c, 0xf5, 0xe9, 0x9a, 0x69, ],
-            [ 0x9c, 0xd3, 0x8d, 0x96, 0xf0, 0xb3, 0xc1, 0x4b, ],
-            [ 0xbd, 0x61, 0x79, 0xa7, 0x1d, 0xc9, 0x6d, 0xbb, ],
-            [ 0x98, 0xee, 0xa2, 0x1a, 0xf2, 0x5c, 0xd6, 0xbe, ],
-            [ 0xc7, 0x67, 0x3b, 0x2e, 0xb0, 0xcb, 0xf2, 0xd0, ],
-            [ 0x88, 0x3e, 0xa3, 0xe3, 0x95, 0x67, 0x53, 0x93, ],
-            [ 0xc8, 0xce, 0x5c, 0xcd, 0x8c, 0x03, 0x0c, 0xa8, ],
-            [ 0x94, 0xaf, 0x49, 0xf6, 0xc6, 0x50, 0xad, 0xb8, ],
-            [ 0xea, 0xb8, 0x85, 0x8a, 0xde, 0x92, 0xe1, 0xbc, ],
-            [ 0xf3, 0x15, 0xbb, 0x5b, 0xb8, 0x35, 0xd8, 0x17, ],
-            [ 0xad, 0xcf, 0x6b, 0x07, 0x63, 0x61, 0x2e, 0x2f, ],
-            [ 0xa5, 0xc9, 0x1d, 0xa7, 0xac, 0xaa, 0x4d, 0xde, ],
-            [ 0x71, 0x65, 0x95, 0x87, 0x66, 0x50, 0xa2, 0xa6, ],
-            [ 0x28, 0xef, 0x49, 0x5c, 0x53, 0xa3, 0x87, 0xad, ],
-            [ 0x42, 0xc3, 0x41, 0xd8, 0xfa, 0x92, 0xd8, 0x32, ],
-            [ 0xce, 0x7c, 0xf2, 0x72, 0x2f, 0x51, 0x27, 0x71, ],
-            [ 0xe3, 0x78, 0x59, 0xf9, 0x46, 0x23, 0xf3, 0xa7, ],
-            [ 0x38, 0x12, 0x05, 0xbb, 0x1a, 0xb0, 0xe0, 0x12, ],
-            [ 0xae, 0x97, 0xa1, 0x0f, 0xd4, 0x34, 0xe0, 0x15, ],
-            [ 0xb4, 0xa3, 0x15, 0x08, 0xbe, 0xff, 0x4d, 0x31, ],
-            [ 0x81, 0x39, 0x62, 0x29, 0xf0, 0x90, 0x79, 0x02, ],
-            [ 0x4d, 0x0c, 0xf4, 0x9e, 0xe5, 0xd4, 0xdc, 0xca, ],
-            [ 0x5c, 0x73, 0x33, 0x6a, 0x76, 0xd8, 0xbf, 0x9a, ],
-            [ 0xd0, 0xa7, 0x04, 0x53, 0x6b, 0xa9, 0x3e, 0x0e, ],
-            [ 0x92, 0x59, 0x58, 0xfc, 0xd6, 0x42, 0x0c, 0xad, ],
-            [ 0xa9, 0x15, 0xc2, 0x9b, 0xc8, 0x06, 0x73, 0x18, ],
-            [ 0x95, 0x2b, 0x79, 0xf3, 0xbc, 0x0a, 0xa6, 0xd4, ],
-            [ 0xf2, 0x1d, 0xf2, 0xe4, 0x1d, 0x45, 0x35, 0xf9, ],
-            [ 0x87, 0x57, 0x75, 0x19, 0x04, 0x8f, 0x53, 0xa9, ],
-            [ 0x10, 0xa5, 0x6c, 0xf5, 0xdf, 0xcd, 0x9a, 0xdb, ],
-            [ 0xeb, 0x75, 0x09, 0x5c, 0xcd, 0x98, 0x6c, 0xd0, ],
-            [ 0x51, 0xa9, 0xcb, 0x9e, 0xcb, 0xa3, 0x12, 0xe6, ],
-            [ 0x96, 0xaf, 0xad, 0xfc, 0x2c, 0xe6, 0x66, 0xc7, ],
-            [ 0x72, 0xfe, 0x52, 0x97, 0x5a, 0x43, 0x64, 0xee, ],
-            [ 0x5a, 0x16, 0x45, 0xb2, 0x76, 0xd5, 0x92, 0xa1, ],
-            [ 0xb2, 0x74, 0xcb, 0x8e, 0xbf, 0x87, 0x87, 0x0a, ],
-            [ 0x6f, 0x9b, 0xb4, 0x20, 0x3d, 0xe7, 0xb3, 0x81, ],
-            [ 0xea, 0xec, 0xb2, 0xa3, 0x0b, 0x22, 0xa8, 0x7f, ],
-            [ 0x99, 0x24, 0xa4, 0x3c, 0xc1, 0x31, 0x57, 0x24, ],
-            [ 0xbd, 0x83, 0x8d, 0x3a, 0xaf, 0xbf, 0x8d, 0xb7, ],
-            [ 0x0b, 0x1a, 0x2a, 0x32, 0x65, 0xd5, 0x1a, 0xea, ],
-            [ 0x13, 0x50, 0x79, 0xa3, 0x23, 0x1c, 0xe6, 0x60, ],
-            [ 0x93, 0x2b, 0x28, 0x46, 0xe4, 0xd7, 0x06, 0x66, ],
-            [ 0xe1, 0x91, 0x5f, 0x5c, 0xb1, 0xec, 0xa4, 0x6c, ],
-            [ 0xf3, 0x25, 0x96, 0x5c, 0xa1, 0x6d, 0x62, 0x9f, ],
-            [ 0x57, 0x5f, 0xf2, 0x8e, 0x60, 0x38, 0x1b, 0xe5, ],
-            [ 0x72, 0x45, 0x06, 0xeb, 0x4c, 0x32, 0x8a, 0x95, ]
-        ];
-
-        let k0 = 0x_07_06_05_04_03_02_01_00_u64;
-        let k1 = 0x_0f_0e_0d_0c_0b_0a_09_08_u64;
-        let mut buf : ~[u8] = ~[];
-        let mut t = 0;
-        let mut stream_inc = SipState::new(k0, k1);
-        let mut stream_full = SipState::new(k0, k1);
-
-        fn to_hex_str(r: &[u8, ..8]) -> ~str {
-            let mut s = ~"";
-            for b in r.iter() {
-                s.push_str(format!("{:x}", *b));
-            }
-            s
-        }
-
-        while t < 64 {
-            debug!("siphash test {}", t);
-            let vec = u8to64_le!(vecs[t], 0);
-            let out = Bytes(buf.as_slice()).hash_keyed(k0, k1);
-            debug!("got {:?}, expected {:?}", out, vec);
-            assert_eq!(vec, out);
-
-            stream_full.reset();
-            stream_full.input(buf);
-            let f = stream_full.result_str();
-            let i = stream_inc.result_str();
-            let v = to_hex_str(&vecs[t]);
-            debug!("{}: ({}) => inc={} full={}", t, v, i, f);
-
-            assert!(f == i && f == v);
-
-            buf.push(t as u8);
-            stream_inc.input([t as u8]);
-
-            t += 1;
-        }
-    }
-
-    #[test] #[cfg(target_arch = "arm")]
-    fn test_hash_uint() {
-        let val = 0xdeadbeef_deadbeef_u64;
-        assert!((val as u64).hash() != (val as uint).hash());
-        assert_eq!((val as u32).hash(), (val as uint).hash());
-    }
-    #[test] #[cfg(target_arch = "x86_64")]
-    fn test_hash_uint() {
-        let val = 0xdeadbeef_deadbeef_u64;
-        assert_eq!((val as u64).hash(), (val as uint).hash());
-        assert!((val as u32).hash() != (val as uint).hash());
-    }
-    #[test] #[cfg(target_arch = "x86")]
-    fn test_hash_uint() {
-        let val = 0xdeadbeef_deadbeef_u64;
-        assert!((val as u64).hash() != (val as uint).hash());
-        assert_eq!((val as u32).hash(), (val as uint).hash());
-    }
-
-    #[test]
-    fn test_hash_idempotent() {
-        let val64 = 0xdeadbeef_deadbeef_u64;
-        val64.hash() == val64.hash();
-        let val32 = 0xdeadbeef_u32;
-        val32.hash() == val32.hash();
-    }
-
-    #[test]
-    fn test_hash_no_bytes_dropped_64() {
-        let val = 0xdeadbeef_deadbeef_u64;
-
-        assert!(val.hash() != zero_byte(val, 0).hash());
-        assert!(val.hash() != zero_byte(val, 1).hash());
-        assert!(val.hash() != zero_byte(val, 2).hash());
-        assert!(val.hash() != zero_byte(val, 3).hash());
-        assert!(val.hash() != zero_byte(val, 4).hash());
-        assert!(val.hash() != zero_byte(val, 5).hash());
-        assert!(val.hash() != zero_byte(val, 6).hash());
-        assert!(val.hash() != zero_byte(val, 7).hash());
-
-        fn zero_byte(val: u64, byte: uint) -> u64 {
-            assert!(byte < 8);
-            val & !(0xff << (byte * 8))
-        }
-    }
-
-    #[test]
-    fn test_hash_no_bytes_dropped_32() {
-        let val = 0xdeadbeef_u32;
-
-        assert!(val.hash() != zero_byte(val, 0).hash());
-        assert!(val.hash() != zero_byte(val, 1).hash());
-        assert!(val.hash() != zero_byte(val, 2).hash());
-        assert!(val.hash() != zero_byte(val, 3).hash());
-
-        fn zero_byte(val: u32, byte: uint) -> u32 {
-            assert!(byte < 4);
-            val & !(0xff << (byte * 8))
-        }
-    }
-
-    #[test]
-    fn test_float_hashes_differ() {
-        assert!(0.0.hash() != 1.0.hash());
-        assert!(1.0.hash() != (-1.0).hash());
-    }
-
-    #[test]
-    fn test_float_hashes_of_zero() {
-        assert_eq!(0.0.hash(), (-0.0).hash());
-    }
-
-    #[test]
-    fn test_hash_no_concat_alias() {
-        let s = ("aa", "bb");
-        let t = ("aabb", "");
-        let u = ("a", "abb");
-
-        let v = (&[1u8], &[0u8, 0], &[0u8]);
-        let w = (&[1u8, 0, 0, 0], &[], &[]);
-
-        assert!(v != w);
-        assert!(s.hash() != t.hash() && s.hash() != u.hash());
-        assert!(v.hash() != w.hash());
-    }
-}

src/libstd/intrinsics.rs

@@ -444,7 +444,7 @@ extern "rust-intrinsic" {
 /// `TypeId` represents a globally unique identifier for a type
 #[lang="type_id"] // This needs to be kept in lockstep with the code in trans/intrinsic.rs and
                   // middle/lang_items.rs
-#[deriving(Eq, IterBytes)]
+#[deriving(Eq, Hash)]
 #[cfg(not(test))]
 pub struct TypeId {
     priv t: u64,

src/libstd/io/net/ip.rs

@@ -14,12 +14,11 @@ use iter::Iterator;
 use option::{Option, None, Some};
 use str::StrSlice;
 use to_str::ToStr;
-use to_bytes::IterBytes;
 use vec::{MutableCloneableVector, ImmutableVector, MutableVector};
 
 pub type Port = u16;
 
-#[deriving(Eq, TotalEq, Clone, IterBytes)]
+#[deriving(Eq, TotalEq, Clone, Hash)]
 pub enum IpAddr {
     Ipv4Addr(u8, u8, u8, u8),
     Ipv6Addr(u16, u16, u16, u16, u16, u16, u16, u16)
@@ -49,7 +48,7 @@ impl ToStr for IpAddr {
     }
 }
 
-#[deriving(Eq, TotalEq, Clone, IterBytes)]
+#[deriving(Eq, TotalEq, Clone, Hash)]
 pub struct SocketAddr {
     ip: IpAddr,
     port: Port,
@@ -340,7 +339,6 @@ impl FromStr for SocketAddr {
 mod test {
     use prelude::*;
     use super::*;
-    use to_bytes::ToBytes;
 
     #[test]
     fn test_from_str_ipv4() {
@@ -442,14 +440,4 @@ mod test {
         assert!(a1.to_str() == ~"::ffff:192.0.2.128" || a1.to_str() == ~"::FFFF:192.0.2.128");
         assert_eq!(Ipv6Addr(8, 9, 10, 11, 12, 13, 14, 15).to_str(), ~"8:9:a:b:c:d:e:f");
     }
-
-    #[test]
-    fn ipv4_addr_to_bytes() {
-        Ipv4Addr(123, 20, 12, 56).to_bytes(true);
-    }
-
-    #[test]
-    fn socket_addr_to_bytes() {
-        SocketAddr { ip: Ipv4Addr(1, 2, 3, 4), port: 1234 }.to_bytes(true);
-    }
 }

src/libstd/io/signal.rs

@@ -30,7 +30,7 @@ use rt::rtio::{IoFactory, LocalIo, RtioSignal};
 use vec::{ImmutableVector, OwnedVector};
 
 #[repr(int)]
-#[deriving(Eq, IterBytes)]
+#[deriving(Eq, Hash)]
 pub enum Signum {
     /// Equivalent to SIGBREAK, delivered when the user presses Ctrl-Break.
     Break = 21i,

src/libstd/lib.rs

@@ -143,9 +143,7 @@ pub mod from_str;
 pub mod num;
 pub mod iter;
 pub mod to_str;
-pub mod to_bytes;
 pub mod clone;
-pub mod hash_old;
 pub mod hash;
 pub mod container;
 pub mod default;
@@ -228,7 +226,6 @@ mod std {
     pub use os;
     pub use rt;
     pub use str;
-    pub use to_bytes;
     pub use to_str;
     pub use unstable;
 }

src/libstd/path/posix.rs

@@ -15,11 +15,11 @@ use c_str::{CString, ToCStr};
 use clone::Clone;
 use cmp::Eq;
 use from_str::FromStr;
+use hash::{Hash, sip};
 use iter::{AdditiveIterator, Extendable, Iterator, Map};
 use option::{Option, None, Some};
 use str;
 use str::Str;
-use to_bytes::IterBytes;
 use vec;
 use vec::{CloneableVector, RevSplits, Splits, Vector, VectorVector,
           ImmutableEqVector, OwnedVector, ImmutableVector, OwnedCloneableVector};
@@ -88,10 +88,10 @@ impl ToCStr for Path {
     }
 }
 
-impl IterBytes for Path {
+impl Hash for Path {
     #[inline]
-    fn iter_bytes(&self, lsb0: bool, f: |buf: &[u8]| -> bool) -> bool {
-        self.repr.iter_bytes(lsb0, f)
+    fn hash(&self, s: &mut sip::SipState) {
+        self.repr.hash(s)
     }
 }
 

src/libstd/path/windows.rs

@@ -17,11 +17,11 @@ use clone::Clone;
 use container::Container;
 use cmp::Eq;
 use from_str::FromStr;
+use hash::{Hash, sip};
 use iter::{AdditiveIterator, DoubleEndedIterator, Extendable, Rev, Iterator, Map};
 use option::{Option, Some, None};
 use str;
 use str::{CharSplits, OwnedStr, Str, StrVector, StrSlice};
-use to_bytes::IterBytes;
 use vec::{Vector, OwnedVector, ImmutableVector};
 use super::{contains_nul, BytesContainer, GenericPath, GenericPathUnsafe};
 
@@ -112,10 +112,10 @@ impl ToCStr for Path {
     }
 }
 
-impl IterBytes for Path {
+impl Hash for Path {
     #[inline]
-    fn iter_bytes(&self, lsb0: bool, f: |&[u8]| -> bool) -> bool {
-        self.repr.iter_bytes(lsb0, f)
+    fn hash(&self, s: &mut sip::SipState) {
+        self.repr.hash(s)
     }
 }
 

src/libstd/prelude.rs

@@ -55,7 +55,6 @@ pub use path::{GenericPath, Path, PosixPath, WindowsPath};
 pub use ptr::RawPtr;
 pub use io::{Buffer, Writer, Reader, Seek};
 pub use str::{Str, StrVector, StrSlice, OwnedStr, IntoMaybeOwned};
-pub use to_bytes::IterBytes;
 pub use to_str::{ToStr, IntoStr};
 pub use tuple::{Tuple1, Tuple2, Tuple3, Tuple4};
 pub use tuple::{Tuple5, Tuple6, Tuple7, Tuple8};

src/libstd/str.rs

@@ -89,6 +89,7 @@ use clone::{Clone, DeepClone};
 use cmp::{Eq, TotalEq, Ord, TotalOrd, Equiv, Ordering};
 use container::{Container, Mutable};
 use fmt;
+use hash::{Hash, sip};
 use iter::{Iterator, FromIterator, Extendable, range};
 use iter::{Filter, AdditiveIterator, Map};
 use iter::{Rev, DoubleEndedIterator, ExactSize};
@@ -103,7 +104,6 @@ use vec;
 use vec::{OwnedVector, OwnedCloneableVector, ImmutableVector, MutableVector};
 use vec_ng::Vec;
 use default::Default;
-use to_bytes::{IterBytes, Cb};
 use raw::Repr;
 
 /*
@@ -1356,13 +1356,10 @@ impl<'a> Default for MaybeOwned<'a> {
     fn default() -> MaybeOwned<'a> { Slice("") }
 }
 
-impl<'a> IterBytes for MaybeOwned<'a> {
+impl<'a> Hash for MaybeOwned<'a> {
     #[inline]
-    fn iter_bytes(&self, lsb0: bool, f: Cb) -> bool {
-        match *self {
-            Slice(s) => s.iter_bytes(lsb0, f),
-            Owned(ref s) => s.iter_bytes(lsb0, f)
-        }
+    fn hash(&self, s: &mut sip::SipState) {
+        self.as_slice().hash(s)
     }
 }
 

src/libstd/to_bytes.rs

@@ -1,375 +0,0 @@
-// Copyright 2012 The Rust Project Developers. See the COPYRIGHT
-// file at the top-level directory of this distribution and at
-// http://rust-lang.org/COPYRIGHT.
-//
-// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
-// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
-// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
-// option. This file may not be copied, modified, or distributed
-// except according to those terms.
-
-/*!
-
-The `ToBytes` and `IterBytes` traits for converting to raw bytes
-
-*/
-
-use cast;
-use container::Container;
-use iter::Iterator;
-use option::{None, Option, Some};
-use rc::Rc;
-use str::{Str, StrSlice};
-use vec::{Vector, ImmutableVector};
-use vec_ng::Vec;
-
-pub type Cb<'a> = 'a |buf: &[u8]| -> bool;
-
-///
-/// A trait to implement in order to make a type hashable;
-/// This works in combination with the trait `std::hash::Hash`, and
-/// may in the future be merged with that trait or otherwise
-/// modified when default methods and trait inheritance are
-/// completed.
-///
-/// IterBytes should be implemented so that the extent of the
-/// produced byte stream can be discovered, given the original
-/// type.
-/// For example, the IterBytes implementation for vectors emits
-/// its length first, and enums should emit their discriminant.
-///
-pub trait IterBytes {
-    /// Call the provided callback `f` one or more times with
-    /// byte-slices that should be used when computing a hash
-    /// value or otherwise "flattening" the structure into
-    /// a sequence of bytes. The `lsb0` parameter conveys
-    /// whether the caller is asking for little-endian bytes
-    /// (`true`) or big-endian (`false`); this should only be
-    /// relevant in implementations that represent a single
-    /// multi-byte datum such as a 32 bit integer or 64 bit
-    /// floating-point value. It can be safely ignored for
-    /// larger structured types as they are usually processed
-    /// left-to-right in declaration order, regardless of
-    /// underlying memory endianness.
-    ///
-    fn iter_bytes(&self, lsb0: bool, f: Cb) -> bool;
-}
-
-impl IterBytes for bool {
-    #[inline]
-    fn iter_bytes(&self, _lsb0: bool, f: Cb) -> bool {
-        f([
-            *self as u8
-        ])
-    }
-}
-
-impl IterBytes for u8 {
-    #[inline]
-    fn iter_bytes(&self, _lsb0: bool, f: Cb) -> bool {
-        f([
-            *self
-        ])
-    }
-}
-
-impl IterBytes for u16 {
-    #[inline]
-    fn iter_bytes(&self, lsb0: bool, f: Cb) -> bool {
-        if lsb0 {
-            f([
-                *self as u8,
-                (*self >> 8) as u8
-            ])
-        } else {
-            f([
-                (*self >> 8) as u8,
-                *self as u8
-            ])
-        }
-    }
-}
-
-impl IterBytes for u32 {
-    #[inline]
-    fn iter_bytes(&self, lsb0: bool, f: Cb) -> bool {
-        if lsb0 {
-            f([
-                *self as u8,
-                (*self >> 8) as u8,
-                (*self >> 16) as u8,
-                (*self >> 24) as u8,
-            ])
-        } else {
-            f([
-                (*self >> 24) as u8,
-                (*self >> 16) as u8,
-                (*self >> 8) as u8,
-                *self as u8
-            ])
-        }
-    }
-}
-
-impl IterBytes for u64 {
-    #[inline]
-    fn iter_bytes(&self, lsb0: bool, f: Cb) -> bool {
-        if lsb0 {
-            f([
-                *self as u8,
-                (*self >> 8) as u8,
-                (*self >> 16) as u8,
-                (*self >> 24) as u8,
-                (*self >> 32) as u8,
-                (*self >> 40) as u8,
-                (*self >> 48) as u8,
-                (*self >> 56) as u8
-            ])
-        } else {
-            f([
-                (*self >> 56) as u8,
-                (*self >> 48) as u8,
-                (*self >> 40) as u8,
-                (*self >> 32) as u8,
-                (*self >> 24) as u8,
-                (*self >> 16) as u8,
-                (*self >> 8) as u8,
-                *self as u8
-            ])
-        }
-    }
-}
-
-impl IterBytes for i8 {
-    #[inline]
-    fn iter_bytes(&self, lsb0: bool, f: Cb) -> bool {
-        (*self as u8).iter_bytes(lsb0, f)
-    }
-}
-
-impl IterBytes for i16 {
-    #[inline]
-    fn iter_bytes(&self, lsb0: bool, f: Cb) -> bool {
-        (*self as u16).iter_bytes(lsb0, f)
-    }
-}
-
-impl IterBytes for i32 {
-    #[inline]
-    fn iter_bytes(&self, lsb0: bool, f: Cb) -> bool {
-        (*self as u32).iter_bytes(lsb0, f)
-    }
-}
-
-impl IterBytes for i64 {
-    #[inline]
-    fn iter_bytes(&self, lsb0: bool, f: Cb) -> bool {
-        (*self as u64).iter_bytes(lsb0, f)
-    }
-}
-
-impl IterBytes for char {
-    #[inline]
-    fn iter_bytes(&self, lsb0: bool, f: Cb) -> bool {
-        (*self as u32).iter_bytes(lsb0, f)
-    }
-}
-
-#[cfg(target_word_size = "32")]
-impl IterBytes for uint {
-    #[inline]
-    fn iter_bytes(&self, lsb0: bool, f: Cb) -> bool {
-        (*self as u32).iter_bytes(lsb0, f)
-    }
-}
-
-#[cfg(target_word_size = "64")]
-impl IterBytes for uint {
-    #[inline]
-    fn iter_bytes(&self, lsb0: bool, f: Cb) -> bool {
-        (*self as u64).iter_bytes(lsb0, f)
-    }
-}
-
-impl IterBytes for int {
-    #[inline]
-    fn iter_bytes(&self, lsb0: bool, f: Cb) -> bool {
-        (*self as uint).iter_bytes(lsb0, f)
-    }
-}
-
-impl IterBytes for f32 {
-    #[inline]
-    fn iter_bytes(&self, lsb0: bool, f: Cb) -> bool {
-        let i: u32 = unsafe {
-            // 0.0 == -0.0 so they should also have the same hashcode
-            cast::transmute(if *self == -0.0 { 0.0 } else { *self })
-        };
-        i.iter_bytes(lsb0, f)
-    }
-}
-
-impl IterBytes for f64 {
-    #[inline]
-    fn iter_bytes(&self, lsb0: bool, f: Cb) -> bool {
-        let i: u64 = unsafe {
-            // 0.0 == -0.0 so they should also have the same hashcode
-            cast::transmute(if *self == -0.0 { 0.0 } else { *self })
-        };
-        i.iter_bytes(lsb0, f)
-    }
-}
-
-impl<'a,A:IterBytes> IterBytes for &'a [A] {
-    #[inline]
-    fn iter_bytes(&self, lsb0: bool, f: Cb) -> bool {
-        self.len().iter_bytes(lsb0, |b| f(b)) &&
-        self.iter().advance(|elt| elt.iter_bytes(lsb0, |b| f(b)))
-    }
-}
-
-impl<A: IterBytes> IterBytes for (A, ) {
-    fn iter_bytes(&self, lsb0: bool, f: Cb) -> bool {
-        match *self {
-            (ref a, ) => a.iter_bytes(lsb0, |b| f(b))
-        }
-    }
-}
-
-macro_rules! iter_bytes_tuple(
-    ($($A:ident),+) => (
-        impl<$($A: IterBytes),+> IterBytes for ($($A),+) {
-            fn iter_bytes(&self, lsb0: bool, f: Cb) -> bool {
-                match *self {
-                    ($(ref $A),+) => {
-                        $(
-                            $A .iter_bytes(lsb0, |b| f(b))
-                        )&&+
-                    }
-                }
-            }
-        }
-    )
-)
-
-iter_bytes_tuple!(A, B)
-iter_bytes_tuple!(A, B, C)
-iter_bytes_tuple!(A, B, C, D)
-iter_bytes_tuple!(A, B, C, D, E)
-iter_bytes_tuple!(A, B, C, D, E, F)
-iter_bytes_tuple!(A, B, C, D, E, F, G)
-iter_bytes_tuple!(A, B, C, D, E, F, G, H)
-
-impl<A:IterBytes> IterBytes for ~[A] {
-    #[inline]
-    fn iter_bytes(&self, lsb0: bool, f: Cb) -> bool {
-        self.as_slice().iter_bytes(lsb0, f)
-    }
-}
-
-impl<A:IterBytes> IterBytes for Vec<A> {
-    #[inline]
-    fn iter_bytes(&self, lsb0: bool, f: Cb) -> bool {
-        self.as_slice().iter_bytes(lsb0, f)
-    }
-}
-
-impl<'a> IterBytes for &'a str {
-    #[inline]
-    fn iter_bytes(&self, _lsb0: bool, f: Cb) -> bool {
-        // Terminate the string with a byte that does not appear in UTF-8
-        f(self.as_bytes()) && f([0xFF])
-    }
-}
-
-impl IterBytes for ~str {
-    #[inline]
-    fn iter_bytes(&self, lsb0: bool, f: Cb) -> bool {
-        self.as_slice().iter_bytes(lsb0, f)
-    }
-}
-
-impl<A:IterBytes> IterBytes for Option<A> {
-    #[inline]
-    fn iter_bytes(&self, lsb0: bool, f: Cb) -> bool {
-        match *self {
-          Some(ref a) => 0u8.iter_bytes(lsb0, |b| f(b)) && a.iter_bytes(lsb0, |b| f(b)),
-          None => 1u8.iter_bytes(lsb0, f)
-        }
-    }
-}
-
-impl<'a,A:IterBytes> IterBytes for &'a A {
-    #[inline]
-    fn iter_bytes(&self, lsb0: bool, f: Cb) -> bool {
-        (**self).iter_bytes(lsb0, f)
-    }
-}
-
-impl<A:IterBytes> IterBytes for @A {
-    #[inline]
-    fn iter_bytes(&self, lsb0: bool, f: Cb) -> bool {
-        (**self).iter_bytes(lsb0, f)
-    }
-}
-
-impl<A:IterBytes> IterBytes for Rc<A> {
-    #[inline]
-    fn iter_bytes(&self, lsb0: bool, f: Cb) -> bool {
-        self.borrow().iter_bytes(lsb0, f)
-    }
-}
-
-impl<A:IterBytes> IterBytes for ~A {
-    #[inline]
-    fn iter_bytes(&self, lsb0: bool, f: Cb) -> bool {
-        (**self).iter_bytes(lsb0, f)
-    }
-}
-
-// NB: raw-pointer IterBytes does _not_ dereference
-// to the target; it just gives you the pointer-bytes.
-impl<A> IterBytes for *A {
-    #[inline]
-    fn iter_bytes(&self, lsb0: bool, f: Cb) -> bool {
-        (*self as uint).iter_bytes(lsb0, f)
-    }
-}
-
-impl<A> IterBytes for *mut A {
-    #[inline]
-    fn iter_bytes(&self, lsb0: bool, f: Cb) -> bool {
-        (*self as uint).iter_bytes(lsb0, f)
-    }
-}
-
-/// A trait for converting a value to a list of bytes.
-pub trait ToBytes {
-    /// Converts the current value to a list of bytes. This is equivalent to
-    /// invoking iter_bytes on a type and collecting all yielded values in an
-    /// array
-    fn to_bytes(&self, lsb0: bool) -> ~[u8];
-}
-
-impl<A:IterBytes> ToBytes for A {
-    fn to_bytes(&self, lsb0: bool) -> ~[u8] {
-        use io::Writer;
-
-        let mut m = ::io::MemWriter::new();
-        self.iter_bytes(lsb0, |bytes| {
-            m.write(bytes).unwrap();
-            true
-        });
-        m.unwrap()
-    }
-}
-
-#[cfg(test)]
-mod test {
-    use super::*;
-    // just test to see if it compiles:
-    #[test] fn iterbytes_compiles () {
-        takes_iterbytes((3,4,5,false));
-    }
-    fn takes_iterbytes<T : IterBytes>(_x : T) {}
-}

src/libsyntax/abi.rs

@@ -8,7 +8,7 @@
 // option. This file may not be copied, modified, or distributed
 // except according to those terms.
 
-use std::to_bytes;
+use std::hash::{Hash, sip};
 
 #[deriving(Eq)]
 pub enum Os { OsWin32, OsMacos, OsLinux, OsAndroid, OsFreebsd, }
@@ -64,7 +64,7 @@ enum AbiArchitecture {
     Archs(u32)  // Multiple architectures (bitset)
 }
 
-#[deriving(Clone, Eq, Encodable, Decodable)]
+#[deriving(Clone, Eq, Encodable, Decodable, Hash)]
 pub struct AbiSet {
     priv bits: u32   // each bit represents one of the abis below
 }
@@ -265,15 +265,9 @@ impl AbiSet {
     }
 }
 
-impl to_bytes::IterBytes for Abi {
-    fn iter_bytes(&self, lsb0: bool, f: to_bytes::Cb) -> bool {
-        self.index().iter_bytes(lsb0, f)
-    }
-}
-
-impl to_bytes::IterBytes for AbiSet {
-    fn iter_bytes(&self, lsb0: bool, f: to_bytes::Cb) -> bool {
-        self.bits.iter_bytes(lsb0, f)
+impl Hash for Abi {
+    fn hash(&self, s: &mut sip::SipState) {
+        self.index().hash(s)
     }
 }
 

src/libsyntax/ast.rs

@@ -39,7 +39,7 @@ pub fn P<T: 'static>(value: T) -> P<T> {
 // table) and a SyntaxContext to track renaming and
 // macro expansion per Flatt et al., "Macros
 // That Work Together"
-#[deriving(Clone, IterBytes, ToStr, TotalEq, TotalOrd, Show)]
+#[deriving(Clone, Hash, ToStr, TotalEq, TotalOrd, Show)]
 pub struct Ident { name: Name, ctxt: SyntaxContext }
 
 impl Ident {
@@ -101,7 +101,7 @@ pub struct SCTable {
 pub static EMPTY_CTXT : SyntaxContext = 0;
 pub static ILLEGAL_CTXT : SyntaxContext = 1;
 
-#[deriving(Eq, Encodable, Decodable,IterBytes)]
+#[deriving(Eq, Encodable, Decodable,Hash)]
 pub enum SyntaxContext_ {
     EmptyCtxt,
     Mark (Mrk,SyntaxContext),
@@ -140,7 +140,7 @@ impl<D:Decoder> Decodable<D> for Ident {
 /// Function name (not all functions have names)
 pub type FnIdent = Option<Ident>;
 
-#[deriving(Clone, Eq, Encodable, Decodable, IterBytes)]
+#[deriving(Clone, Eq, Encodable, Decodable, Hash)]
 pub struct Lifetime {
     id: NodeId,
     span: Span,
@@ -151,7 +151,7 @@ pub struct Lifetime {
 // for instance: std::cmp::Eq  .  It's represented
 // as a sequence of identifiers, along with a bunch
 // of supporting information.
-#[deriving(Clone, Eq, Encodable, Decodable, IterBytes)]
+#[deriving(Clone, Eq, Encodable, Decodable, Hash)]
 pub struct Path {
     span: Span,
     /// A `::foo` path, is relative to the crate root rather than current
@@ -163,7 +163,7 @@ pub struct Path {
 
 /// A segment of a path: an identifier, an optional lifetime, and a set of
 /// types.
-#[deriving(Clone, Eq, Encodable, Decodable, IterBytes)]
+#[deriving(Clone, Eq, Encodable, Decodable, Hash)]
 pub struct PathSegment {
     /// The identifier portion of this path segment.
     identifier: Ident,
@@ -177,7 +177,7 @@ pub type CrateNum = u32;
 
 pub type NodeId = u32;
 
-#[deriving(Clone, TotalEq, TotalOrd, Eq, Encodable, Decodable, IterBytes, ToStr, Show)]
+#[deriving(Clone, TotalEq, TotalOrd, Eq, Encodable, Decodable, Hash, ToStr, Show)]
 pub struct DefId {
     krate: CrateNum,
     node: NodeId,
@@ -197,13 +197,13 @@ pub static DUMMY_NODE_ID: NodeId = -1;
 // typeck::collect::compute_bounds matches these against
 // the "special" built-in traits (see middle::lang_items) and
 // detects Copy, Send, Send, and Freeze.
-#[deriving(Clone, Eq, Encodable, Decodable, IterBytes)]
+#[deriving(Clone, Eq, Encodable, Decodable, Hash)]
 pub enum TyParamBound {
     TraitTyParamBound(TraitRef),
     RegionTyParamBound
 }
 
-#[deriving(Clone, Eq, Encodable, Decodable, IterBytes)]
+#[deriving(Clone, Eq, Encodable, Decodable, Hash)]
 pub struct TyParam {
     ident: Ident,
     id: NodeId,
@@ -211,7 +211,7 @@ pub struct TyParam {
     default: Option<P<Ty>>
 }
 
-#[deriving(Clone, Eq, Encodable, Decodable, IterBytes)]
+#[deriving(Clone, Eq, Encodable, Decodable, Hash)]
 pub struct Generics {
     lifetimes: OptVec<Lifetime>,
     ty_params: OptVec<TyParam>,
@@ -229,13 +229,13 @@ impl Generics {
     }
 }
 
-#[deriving(Clone, Eq, Encodable, Decodable, IterBytes)]
+#[deriving(Clone, Eq, Encodable, Decodable, Hash)]
 pub enum MethodProvenance {
     FromTrait(DefId),
     FromImpl(DefId),
 }
 
-#[deriving(Clone, Eq, Encodable, Decodable, IterBytes)]
+#[deriving(Clone, Eq, Encodable, Decodable, Hash)]
 pub enum Def {
     DefFn(DefId, Purity),
     DefStaticMethod(/* method */ DefId, MethodProvenance, Purity),
@@ -272,7 +272,7 @@ pub enum Def {
     DefMethod(DefId /* method */, Option<DefId> /* trait */),
 }
 
-#[deriving(Clone, Eq, IterBytes, Encodable, Decodable, ToStr)]
+#[deriving(Clone, Eq, Hash, Encodable, Decodable, ToStr)]
 pub enum DefRegion {
     DefStaticRegion,
     DefEarlyBoundRegion(/* index */ uint, /* lifetime decl */ NodeId),
@@ -284,7 +284,7 @@ pub enum DefRegion {
 // used to drive conditional compilation
 pub type CrateConfig = ~[@MetaItem];
 
-#[deriving(Clone, Eq, Encodable, Decodable, IterBytes)]
+#[deriving(Clone, Eq, Encodable, Decodable, Hash)]
 pub struct Crate {
     module: Mod,
     attrs: ~[Attribute],
@@ -294,7 +294,7 @@ pub struct Crate {
 
 pub type MetaItem = Spanned<MetaItem_>;
 
-#[deriving(Clone, Encodable, Decodable, IterBytes)]
+#[deriving(Clone, Encodable, Decodable, Hash)]
 pub enum MetaItem_ {
     MetaWord(InternedString),
     MetaList(InternedString, ~[@MetaItem]),
@@ -326,7 +326,7 @@ impl Eq for MetaItem_ {
     }
 }
 
-#[deriving(Clone, Eq, Encodable, Decodable,IterBytes)]
+#[deriving(Clone, Eq, Encodable, Decodable,Hash)]
 pub struct Block {
     view_items: ~[ViewItem],
     stmts: ~[@Stmt],
@@ -336,26 +336,26 @@ pub struct Block {
     span: Span,
 }
 
-#[deriving(Clone, Eq, Encodable, Decodable, IterBytes)]
+#[deriving(Clone, Eq, Encodable, Decodable, Hash)]
 pub struct Pat {
     id: NodeId,
     node: Pat_,
     span: Span,
 }
 
-#[deriving(Clone, Eq, Encodable, Decodable, IterBytes)]
+#[deriving(Clone, Eq, Encodable, Decodable, Hash)]
 pub struct FieldPat {
     ident: Ident,
     pat: @Pat,
 }
 
-#[deriving(Clone, Eq, Encodable, Decodable, IterBytes)]
+#[deriving(Clone, Eq, Encodable, Decodable, Hash)]
 pub enum BindingMode {
     BindByRef(Mutability),
     BindByValue(Mutability),
 }
 
-#[deriving(Clone, Eq, Encodable, Decodable, IterBytes)]
+#[deriving(Clone, Eq, Encodable, Decodable, Hash)]
 pub enum Pat_ {
     PatWild,
     PatWildMulti,
@@ -380,13 +380,13 @@ pub enum Pat_ {
     PatVec(~[@Pat], Option<@Pat>, ~[@Pat])
 }
 
-#[deriving(Clone, Eq, Encodable, Decodable, IterBytes)]
+#[deriving(Clone, Eq, Encodable, Decodable, Hash)]
 pub enum Mutability {
     MutMutable,
     MutImmutable,
 }
 
-#[deriving(Clone, Eq, Encodable, Decodable, IterBytes)]
+#[deriving(Clone, Eq, Encodable, Decodable, Hash)]
 pub enum Sigil {
     BorrowedSigil,
     OwnedSigil,
@@ -403,14 +403,14 @@ impl ToStr for Sigil {
     }
 }
 
-#[deriving(Clone, Eq, Encodable, Decodable, IterBytes)]
+#[deriving(Clone, Eq, Encodable, Decodable, Hash)]
 pub enum ExprVstore {
     ExprVstoreUniq,                 // ~[1,2,3,4]
     ExprVstoreSlice,                // &[1,2,3,4]
     ExprVstoreMutSlice,             // &mut [1,2,3,4]
 }
 
-#[deriving(Clone, Eq, Encodable, Decodable, IterBytes)]
+#[deriving(Clone, Eq, Encodable, Decodable, Hash)]
 pub enum BinOp {
     BiAdd,
     BiSub,
@@ -432,7 +432,7 @@ pub enum BinOp {
     BiGt,
 }
 
-#[deriving(Clone, Eq, Encodable, Decodable, IterBytes)]
+#[deriving(Clone, Eq, Encodable, Decodable, Hash)]
 pub enum UnOp {
     UnBox,
     UnUniq,
@@ -443,7 +443,7 @@ pub enum UnOp {
 
 pub type Stmt = Spanned<Stmt_>;
 
-#[deriving(Clone, Eq, Encodable, Decodable, IterBytes)]
+#[deriving(Clone, Eq, Encodable, Decodable, Hash)]
 pub enum Stmt_ {
     // could be an item or a local (let) binding:
     StmtDecl(@Decl, NodeId),
@@ -461,7 +461,7 @@ pub enum Stmt_ {
 // FIXME (pending discussion of #1697, #2178...): local should really be
 // a refinement on pat.
 /// Local represents a `let` statement, e.g., `let <pat>:<ty> = <expr>;`
-#[deriving(Eq, Encodable, Decodable,IterBytes)]
+#[deriving(Eq, Encodable, Decodable,Hash)]
 pub struct Local {
     ty: P<Ty>,
     pat: @Pat,
@@ -472,7 +472,7 @@ pub struct Local {
 
 pub type Decl = Spanned<Decl_>;
 
-#[deriving(Eq, Encodable, Decodable,IterBytes)]
+#[deriving(Eq, Encodable, Decodable,Hash)]
 pub enum Decl_ {
     // a local (let) binding:
     DeclLocal(@Local),
@@ -480,14 +480,14 @@ pub enum Decl_ {
     DeclItem(@Item),
 }
 
-#[deriving(Clone, Eq, Encodable, Decodable, IterBytes)]
+#[deriving(Clone, Eq, Encodable, Decodable, Hash)]
 pub struct Arm {
     pats: ~[@Pat],
     guard: Option<@Expr>,
     body: P<Block>,
 }
 
-#[deriving(Clone, Eq, Encodable, Decodable, IterBytes)]
+#[deriving(Clone, Eq, Encodable, Decodable, Hash)]
 pub struct Field {
     ident: SpannedIdent,
     expr: @Expr,
@@ -496,19 +496,19 @@ pub struct Field {
 
 pub type SpannedIdent = Spanned<Ident>;
 
-#[deriving(Clone, Eq, Encodable, Decodable, IterBytes)]
+#[deriving(Clone, Eq, Encodable, Decodable, Hash)]
 pub enum BlockCheckMode {
     DefaultBlock,
     UnsafeBlock(UnsafeSource),
 }
 
-#[deriving(Clone, Eq, Encodable, Decodable, IterBytes)]
+#[deriving(Clone, Eq, Encodable, Decodable, Hash)]
 pub enum UnsafeSource {
     CompilerGenerated,
     UserProvided,
 }
 
-#[deriving(Clone, Eq, Encodable, Decodable,IterBytes)]
+#[deriving(Clone, Eq, Encodable, Decodable,Hash)]
 pub struct Expr {
     id: NodeId,
     node: Expr_,
@@ -528,7 +528,7 @@ impl Expr {
     }
 }
 
-#[deriving(Clone, Eq, Encodable, Decodable, IterBytes)]
+#[deriving(Clone, Eq, Encodable, Decodable, Hash)]
 pub enum Expr_ {
     ExprVstore(@Expr, ExprVstore),
     // First expr is the place; second expr is the value.
@@ -600,7 +600,7 @@ pub enum Expr_ {
 // else knows what to do with them, so you'll probably get a syntax
 // error.
 //
-#[deriving(Clone, Eq, Encodable, Decodable, IterBytes)]
+#[deriving(Clone, Eq, Encodable, Decodable, Hash)]
 #[doc="For macro invocations; parsing is delegated to the macro"]
 pub enum TokenTree {
     // a single token
@@ -674,7 +674,7 @@ pub enum TokenTree {
 //
 pub type Matcher = Spanned<Matcher_>;
 
-#[deriving(Clone, Eq, Encodable, Decodable, IterBytes)]
+#[deriving(Clone, Eq, Encodable, Decodable, Hash)]
 pub enum Matcher_ {
     // match one token
     MatchTok(::parse::token::Token),
@@ -691,12 +691,12 @@ pub type Mac = Spanned<Mac_>;
 // is being invoked, and the vector of token-trees contains the source
 // of the macro invocation.
 // There's only one flavor, now, so this could presumably be simplified.
-#[deriving(Clone, Eq, Encodable, Decodable, IterBytes)]
+#[deriving(Clone, Eq, Encodable, Decodable, Hash)]
 pub enum Mac_ {
     MacInvocTT(Path, ~[TokenTree], SyntaxContext),   // new macro-invocation
 }
 
-#[deriving(Clone, Eq, Encodable, Decodable, IterBytes)]
+#[deriving(Clone, Eq, Encodable, Decodable, Hash)]
 pub enum StrStyle {
     CookedStr,
     RawStr(uint)
@@ -704,7 +704,7 @@ pub enum StrStyle {
 
 pub type Lit = Spanned<Lit_>;
 
-#[deriving(Clone, Eq, Encodable, Decodable, IterBytes)]
+#[deriving(Clone, Eq, Encodable, Decodable, Hash)]
 pub enum Lit_ {
     LitStr(InternedString, StrStyle),
     LitBinary(Rc<~[u8]>),
@@ -720,20 +720,20 @@ pub enum Lit_ {
 
 // NB: If you change this, you'll probably want to change the corresponding
 // type structure in middle/ty.rs as well.
-#[deriving(Clone, Eq, Encodable, Decodable, IterBytes)]
+#[deriving(Clone, Eq, Encodable, Decodable, Hash)]
 pub struct MutTy {
     ty: P<Ty>,
     mutbl: Mutability,
 }
 
-#[deriving(Eq, Encodable, Decodable,IterBytes)]
+#[deriving(Eq, Encodable, Decodable,Hash)]
 pub struct TypeField {
     ident: Ident,
     mt: MutTy,
     span: Span,
 }
 
-#[deriving(Clone, Eq, Encodable, Decodable, IterBytes)]
+#[deriving(Clone, Eq, Encodable, Decodable, Hash)]
 pub struct TypeMethod {
     ident: Ident,
     attrs: ~[Attribute],
@@ -748,13 +748,13 @@ pub struct TypeMethod {
 // A trait method is either required (meaning it doesn't have an
 // implementation, just a signature) or provided (meaning it has a default
 // implementation).
-#[deriving(Clone, Eq, Encodable, Decodable, IterBytes)]
+#[deriving(Clone, Eq, Encodable, Decodable, Hash)]
 pub enum TraitMethod {
     Required(TypeMethod),
     Provided(@Method),
 }
 
-#[deriving(Clone, Eq, Encodable, Decodable, IterBytes)]
+#[deriving(Clone, Eq, Encodable, Decodable, Hash)]
 pub enum IntTy {
     TyI,
     TyI8,
@@ -769,7 +769,7 @@ impl ToStr for IntTy {
     }
 }
 
-#[deriving(Clone, Eq, Encodable, Decodable, IterBytes)]
+#[deriving(Clone, Eq, Encodable, Decodable, Hash)]
 pub enum UintTy {
     TyU,
     TyU8,
@@ -784,7 +784,7 @@ impl ToStr for UintTy {
     }
 }
 
-#[deriving(Clone, Eq, Encodable, Decodable, IterBytes)]
+#[deriving(Clone, Eq, Encodable, Decodable, Hash)]
 pub enum FloatTy {
     TyF32,
     TyF64,
@@ -797,7 +797,7 @@ impl ToStr for FloatTy {
 }
 
 // NB Eq method appears below.
-#[deriving(Clone, Eq, Encodable, Decodable, IterBytes)]
+#[deriving(Clone, Eq, Encodable, Decodable, Hash)]
 pub struct Ty {
     id: NodeId,
     node: Ty_,
@@ -805,7 +805,7 @@ pub struct Ty {
 }
 
 // Not represented directly in the AST, referred to by name through a ty_path.
-#[deriving(Clone, Eq, Encodable, Decodable, IterBytes)]
+#[deriving(Clone, Eq, Encodable, Decodable, Hash)]
 pub enum PrimTy {
     TyInt(IntTy),
     TyUint(UintTy),
@@ -815,7 +815,7 @@ pub enum PrimTy {
     TyChar
 }
 
-#[deriving(Clone, Eq, Encodable, Decodable, IterBytes)]
+#[deriving(Clone, Eq, Encodable, Decodable, Hash)]
 pub enum Onceness {
     Once,
     Many
@@ -830,7 +830,7 @@ impl ToStr for Onceness {
     }
 }
 
-#[deriving(Eq, Encodable, Decodable,IterBytes)]
+#[deriving(Eq, Encodable, Decodable,Hash)]
 pub struct ClosureTy {
     sigil: Sigil,
     region: Option<Lifetime>,
@@ -845,7 +845,7 @@ pub struct ClosureTy {
     bounds: Option<OptVec<TyParamBound>>,
 }
 
-#[deriving(Eq, Encodable, Decodable,IterBytes)]
+#[deriving(Eq, Encodable, Decodable, Hash)]
 pub struct BareFnTy {
     purity: Purity,
     abis: AbiSet,
@@ -853,7 +853,7 @@ pub struct BareFnTy {
     decl: P<FnDecl>
 }
 
-#[deriving(Clone, Eq, Encodable, Decodable, IterBytes)]
+#[deriving(Clone, Eq, Encodable, Decodable, Hash)]
 pub enum Ty_ {
     TyNil,
     TyBot, /* bottom type */
@@ -874,13 +874,13 @@ pub enum Ty_ {
     TyInfer,
 }
 
-#[deriving(Clone, Eq, Encodable, Decodable, IterBytes)]
+#[deriving(Clone, Eq, Encodable, Decodable, Hash)]
 pub enum AsmDialect {
     AsmAtt,
     AsmIntel
 }
 
-#[deriving(Clone, Eq, Encodable, Decodable, IterBytes)]
+#[deriving(Clone, Eq, Encodable, Decodable, Hash)]
 pub struct InlineAsm {
     asm: InternedString,
     asm_str_style: StrStyle,
@@ -892,7 +892,7 @@ pub struct InlineAsm {
     dialect: AsmDialect
 }
 
-#[deriving(Clone, Eq, Encodable, Decodable, IterBytes)]
+#[deriving(Clone, Eq, Encodable, Decodable, Hash)]
 pub struct Arg {
     ty: P<Ty>,
     pat: @Pat,
@@ -919,7 +919,7 @@ impl Arg {
     }
 }
 
-#[deriving(Clone, Eq, Encodable, Decodable, IterBytes)]
+#[deriving(Clone, Eq, Encodable, Decodable, Hash)]
 pub struct FnDecl {
     inputs: ~[Arg],
     output: P<Ty>,
@@ -927,7 +927,7 @@ pub struct FnDecl {
     variadic: bool
 }
 
-#[deriving(Clone, Eq, Encodable, Decodable, IterBytes)]
+#[deriving(Clone, Eq, Encodable, Decodable, Hash)]
 pub enum Purity {
     UnsafeFn, // declared with "unsafe fn"
     ImpureFn, // declared with "fn"
@@ -944,14 +944,14 @@ impl ToStr for Purity {
     }
 }
 
-#[deriving(Clone, Eq, Encodable, Decodable, IterBytes)]
+#[deriving(Clone, Eq, Encodable, Decodable, Hash)]
 pub enum RetStyle {
     NoReturn, // functions with return type _|_ that always
               // raise an error or exit (i.e. never return to the caller)
     Return, // everything else
 }
 
-#[deriving(Clone, Eq, Encodable, Decodable, IterBytes)]
+#[deriving(Clone, Eq, Encodable, Decodable, Hash)]
 pub enum ExplicitSelf_ {
     SelfStatic,                                // no self
     SelfValue,                                 // `self`
@@ -961,7 +961,7 @@ pub enum ExplicitSelf_ {
 
 pub type ExplicitSelf = Spanned<ExplicitSelf_>;
 
-#[deriving(Eq, Encodable, Decodable,IterBytes)]
+#[deriving(Eq, Encodable, Decodable,Hash)]
 pub struct Method {
     ident: Ident,
     attrs: ~[Attribute],
@@ -975,37 +975,37 @@ pub struct Method {
     vis: Visibility,
 }
 
-#[deriving(Clone, Eq, Encodable, Decodable, IterBytes)]
+#[deriving(Clone, Eq, Encodable, Decodable, Hash)]
 pub struct Mod {
     view_items: ~[ViewItem],
     items: ~[@Item],
 }
 
-#[deriving(Clone, Eq, Encodable, Decodable,IterBytes)]
+#[deriving(Clone, Eq, Encodable, Decodable,Hash)]
 pub struct ForeignMod {
     abis: AbiSet,
     view_items: ~[ViewItem],
     items: ~[@ForeignItem],
 }
 
-#[deriving(Clone, Eq, Encodable, Decodable, IterBytes)]
+#[deriving(Clone, Eq, Encodable, Decodable, Hash)]
 pub struct VariantArg {
     ty: P<Ty>,
     id: NodeId,
 }
 
-#[deriving(Clone, Eq, Encodable, Decodable, IterBytes)]
+#[deriving(Clone, Eq, Encodable, Decodable, Hash)]
 pub enum VariantKind {
     TupleVariantKind(~[VariantArg]),
     StructVariantKind(@StructDef),
 }
 
-#[deriving(Clone, Eq, Encodable, Decodable, IterBytes)]
+#[deriving(Clone, Eq, Encodable, Decodable, Hash)]
 pub struct EnumDef {
     variants: ~[P<Variant>],
 }
 
-#[deriving(Clone, Eq, Encodable, Decodable, IterBytes)]
+#[deriving(Clone, Eq, Encodable, Decodable, Hash)]
 pub struct Variant_ {
     name: Ident,
     attrs: ~[Attribute],
@@ -1017,7 +1017,7 @@ pub struct Variant_ {
 
 pub type Variant = Spanned<Variant_>;
 
-#[deriving(Clone, Eq, Encodable, Decodable, IterBytes)]
+#[deriving(Clone, Eq, Encodable, Decodable, Hash)]
 pub struct PathListIdent_ {
     name: Ident,
     id: NodeId,
@@ -1027,7 +1027,7 @@ pub type PathListIdent = Spanned<PathListIdent_>;
 
 pub type ViewPath = Spanned<ViewPath_>;
 
-#[deriving(Eq, Encodable, Decodable, IterBytes)]
+#[deriving(Eq, Encodable, Decodable, Hash)]
 pub enum ViewPath_ {
 
     // quux = foo::bar::baz
@@ -1044,7 +1044,7 @@ pub enum ViewPath_ {
     ViewPathList(Path, ~[PathListIdent], NodeId)
 }
 
-#[deriving(Clone, Eq, Encodable, Decodable, IterBytes)]
+#[deriving(Clone, Eq, Encodable, Decodable, Hash)]
 pub struct ViewItem {
     node: ViewItem_,
     attrs: ~[Attribute],
@@ -1052,7 +1052,7 @@ pub struct ViewItem {
     span: Span,
 }
 
-#[deriving(Clone, Eq, Encodable, Decodable, IterBytes)]
+#[deriving(Clone, Eq, Encodable, Decodable, Hash)]
 pub enum ViewItem_ {
     // ident: name used to refer to this crate in the code
     // optional (InternedString,StrStyle): if present, this is a location
@@ -1068,14 +1068,14 @@ pub type Attribute = Spanned<Attribute_>;
 // Distinguishes between Attributes that decorate items and Attributes that
 // are contained as statements within items. These two cases need to be
 // distinguished for pretty-printing.
-#[deriving(Clone, Eq, Encodable, Decodable,IterBytes)]
+#[deriving(Clone, Eq, Encodable, Decodable,Hash)]
 pub enum AttrStyle {
     AttrOuter,
     AttrInner,
 }
 
 // doc-comments are promoted to attributes that have is_sugared_doc = true
-#[deriving(Clone, Eq, Encodable, Decodable,IterBytes)]
+#[deriving(Clone, Eq, Encodable, Decodable,Hash)]
 pub struct Attribute_ {
     style: AttrStyle,
     value: @MetaItem,
@@ -1089,13 +1089,13 @@ pub struct Attribute_ {
   If this impl is an ItemImpl, the impl_id is redundant (it could be the
   same as the impl's node id).
  */
-#[deriving(Clone, Eq, Encodable, Decodable,IterBytes)]
+#[deriving(Clone, Eq, Encodable, Decodable,Hash)]
 pub struct TraitRef {
     path: Path,
     ref_id: NodeId,
 }
 
-#[deriving(Clone, Eq, Encodable, Decodable,IterBytes)]
+#[deriving(Clone, Eq, Encodable, Decodable,Hash)]
 pub enum Visibility {
     Public,
     Private,
@@ -1111,7 +1111,7 @@ impl Visibility {
     }
 }
 
-#[deriving(Clone, Eq, Encodable, Decodable,IterBytes)]
+#[deriving(Clone, Eq, Encodable, Decodable,Hash)]
 pub struct StructField_ {
     kind: StructFieldKind,
     id: NodeId,
@@ -1121,13 +1121,13 @@ pub struct StructField_ {
 
 pub type StructField = Spanned<StructField_>;
 
-#[deriving(Clone, Eq, Encodable, Decodable,IterBytes)]
+#[deriving(Clone, Eq, Encodable, Decodable,Hash)]
 pub enum StructFieldKind {
     NamedField(Ident, Visibility),
     UnnamedField // element of a tuple-like struct
 }
 
-#[deriving(Eq, Encodable, Decodable,IterBytes)]
+#[deriving(Eq, Encodable, Decodable,Hash)]
 pub struct StructDef {
     fields: ~[StructField], /* fields, not including ctor */
     /* ID of the constructor. This is only used for tuple- or enum-like
@@ -1139,7 +1139,7 @@ pub struct StructDef {
   FIXME (#3300): Should allow items to be anonymous. Right now
   we just use dummy names for anon items.
  */
-#[deriving(Clone, Eq, Encodable, Decodable, IterBytes)]
+#[deriving(Clone, Eq, Encodable, Decodable, Hash)]
 pub struct Item {
     ident: Ident,
     attrs: ~[Attribute],
@@ -1149,7 +1149,7 @@ pub struct Item {
     span: Span,
 }
 
-#[deriving(Clone, Eq, Encodable, Decodable, IterBytes)]
+#[deriving(Clone, Eq, Encodable, Decodable, Hash)]
 pub enum Item_ {
     ItemStatic(P<Ty>, Mutability, @Expr),
     ItemFn(P<FnDecl>, Purity, AbiSet, Generics, P<Block>),
@@ -1167,7 +1167,7 @@ pub enum Item_ {
     ItemMac(Mac),
 }
 
-#[deriving(Eq, Encodable, Decodable,IterBytes)]
+#[deriving(Eq, Encodable, Decodable,Hash)]
 pub struct ForeignItem {
     ident: Ident,
     attrs: ~[Attribute],
@@ -1177,7 +1177,7 @@ pub struct ForeignItem {
     vis: Visibility,
 }
 
-#[deriving(Eq, Encodable, Decodable,IterBytes)]
+#[deriving(Eq, Encodable, Decodable,Hash)]
 pub enum ForeignItem_ {
     ForeignItemFn(P<FnDecl>, Generics),
     ForeignItemStatic(P<Ty>, /* is_mutbl */ bool),
@@ -1186,7 +1186,7 @@ pub enum ForeignItem_ {
 // The data we save and restore about an inlined item or method.  This is not
 // part of the AST that we parse from a file, but it becomes part of the tree
 // that we trans.
-#[deriving(Eq, Encodable, Decodable,IterBytes)]
+#[deriving(Eq, Encodable, Decodable,Hash)]
 pub enum InlinedItem {
     IIItem(@Item),
     IIMethod(DefId /* impl id */, bool /* is provided */, @Method),

src/libsyntax/codemap.rs

@@ -32,13 +32,13 @@ pub trait Pos {
 
 /// A byte offset. Keep this small (currently 32-bits), as AST contains
 /// a lot of them.
-#[deriving(Clone, Eq, IterBytes, Ord)]
+#[deriving(Clone, Eq, Hash, Ord)]
 pub struct BytePos(u32);
 
 /// A character offset. Because of multibyte utf8 characters, a byte offset
 /// is not equivalent to a character offset. The CodeMap will convert BytePos
 /// values to CharPos values as necessary.
-#[deriving(Eq,IterBytes, Ord)]
+#[deriving(Eq,Hash, Ord)]
 pub struct CharPos(uint);
 
 // FIXME: Lots of boilerplate in these impls, but so far my attempts to fix
@@ -84,7 +84,7 @@ are *absolute* positions from the beginning of the codemap, not positions
 relative to FileMaps. Methods on the CodeMap can be used to relate spans back
 to the original source.
 */
-#[deriving(Clone, IterBytes)]
+#[deriving(Clone, Hash)]
 pub struct Span {
     lo: BytePos,
     hi: BytePos,
@@ -93,7 +93,7 @@ pub struct Span {
 
 pub static DUMMY_SP: Span = Span { lo: BytePos(0), hi: BytePos(0), expn_info: None };
 
-#[deriving(Clone, Eq, Encodable, Decodable, IterBytes)]
+#[deriving(Clone, Eq, Encodable, Decodable, Hash)]
 pub struct Spanned<T> {
     node: T,
     span: Span,
@@ -160,7 +160,7 @@ pub struct LocWithOpt {
 pub struct FileMapAndLine {fm: @FileMap, line: uint}
 pub struct FileMapAndBytePos {fm: @FileMap, pos: BytePos}
 
-#[deriving(Clone, IterBytes)]
+#[deriving(Clone, Hash)]
 pub enum MacroFormat {
     // e.g. #[deriving(...)] <item>
     MacroAttribute,
@@ -168,7 +168,7 @@ pub enum MacroFormat {
     MacroBang
 }
 
-#[deriving(Clone, IterBytes)]
+#[deriving(Clone, Hash)]
 pub struct NameAndSpan {
     name: ~str,
     // the format with which the macro was invoked.
@@ -177,7 +177,7 @@ pub struct NameAndSpan {
 }
 
 /// Extra information for tracking macro expansion of spans
-#[deriving(IterBytes)]
+#[deriving(Hash)]
 pub struct ExpnInfo {
     call_site: Span,
     callee: NameAndSpan

src/libsyntax/ext/deriving/iter_bytes.rs

@@ -1,100 +0,0 @@
-// Copyright 2013 The Rust Project Developers. See the COPYRIGHT
-// file at the top-level directory of this distribution and at
-// http://rust-lang.org/COPYRIGHT.
-//
-// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
-// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
-// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
-// option. This file may not be copied, modified, or distributed
-// except according to those terms.
-
-use ast::{MetaItem, Item, Expr, BiAnd};
-use codemap::Span;
-use ext::base::ExtCtxt;
-use ext::build::AstBuilder;
-use ext::deriving::generic::*;
-
-
-pub fn expand_deriving_iter_bytes(cx: &mut ExtCtxt,
-                                  span: Span,
-                                  mitem: @MetaItem,
-                                  item: @Item,
-                                  push: |@Item|) {
-    let trait_def = TraitDef {
-        span: span,
-        attributes: ~[],
-        path: Path::new(~["std", "to_bytes", "IterBytes"]),
-        additional_bounds: ~[],
-        generics: LifetimeBounds::empty(),
-        methods: ~[
-            MethodDef {
-                name: "iter_bytes",
-                generics: LifetimeBounds::empty(),
-                explicit_self: borrowed_explicit_self(),
-                args: ~[
-                    Literal(Path::new(~["bool"])),
-                    Literal(Path::new(~["std", "to_bytes", "Cb"]))
-                ],
-                ret_ty: Literal(Path::new(~["bool"])),
-                inline: true,
-                const_nonmatching: false,
-                combine_substructure: iter_bytes_substructure
-            }
-        ]
-    };
-
-    trait_def.expand(cx, mitem, item, push)
-}
-
-fn iter_bytes_substructure(cx: &mut ExtCtxt, trait_span: Span, substr: &Substructure) -> @Expr {
-    let (lsb0, f)= match substr.nonself_args {
-        [l, f] => (l, f),
-        _ => cx.span_bug(trait_span, "incorrect number of arguments in `deriving(IterBytes)`")
-    };
-    // Build the "explicitly borrowed" stack closure, "|_buf| f(_buf)".
-    let blk_arg = cx.ident_of("_buf");
-    let borrowed_f =
-        cx.lambda_expr_1(trait_span,
-                         cx.expr_call(trait_span, f, ~[cx.expr_ident(trait_span, blk_arg)]),
-                         blk_arg);
-
-    let iter_bytes_ident = substr.method_ident;
-    let call_iterbytes = |span, thing_expr| {
-        cx.expr_method_call(span,
-                            thing_expr,
-                            iter_bytes_ident,
-                            ~[lsb0, borrowed_f])
-    };
-    let mut exprs = ~[];
-    let fields;
-    match *substr.fields {
-        Struct(ref fs) => {
-            fields = fs
-        }
-        EnumMatching(index, ref variant, ref fs) => {
-            // Determine the discriminant. We will feed this value to the byte
-            // iteration function.
-            let discriminant = match variant.node.disr_expr {
-                Some(d)=> d,
-                None => cx.expr_uint(trait_span, index)
-            };
-
-            exprs.push(call_iterbytes(trait_span, discriminant));
-
-            fields = fs;
-        }
-        _ => cx.span_bug(trait_span, "impossible substructure in `deriving(IterBytes)`")
-    }
-
-    for &FieldInfo { self_, span, .. } in fields.iter() {
-        exprs.push(call_iterbytes(span, self_));
-    }
-
-    if exprs.len() == 0 {
-        cx.span_bug(trait_span, "#[deriving(IterBytes)] needs at least one field");
-    }
-
-    exprs.slice(1, exprs.len()).iter().fold(exprs[0], |prev, me| {
-        cx.expr_binary(trait_span, BiAnd, prev, *me)
-    })
-}

src/libsyntax/ext/deriving/mod.rs

@@ -23,7 +23,6 @@ use ext::base::ExtCtxt;
 use codemap::Span;
 
 pub mod clone;
-pub mod iter_bytes;
 pub mod encodable;
 pub mod decodable;
 pub mod hash;
@@ -74,7 +73,6 @@ pub fn expand_meta_deriving(cx: &mut ExtCtxt,
                             "Clone" => expand!(clone::expand_deriving_clone),
                             "DeepClone" => expand!(clone::expand_deriving_deep_clone),
 
-                            "IterBytes" => expand!(iter_bytes::expand_deriving_iter_bytes),
                             "Hash" => expand!(hash::expand_deriving_hash),
 
                             "Encodable" => expand!(encodable::expand_deriving_encodable),

src/libsyntax/opt_vec.rs

@@ -17,7 +17,7 @@
 
 use std::vec;
 
-#[deriving(Clone, Encodable, Decodable, IterBytes)]
+#[deriving(Clone, Encodable, Decodable, Hash)]
 pub enum OptVec<T> {
     Empty,
     Vec(~[T])

src/libsyntax/parse/obsolete.rs

@@ -22,10 +22,8 @@ use codemap::{Span, respan};
 use parse::parser::Parser;
 use parse::token;
 
-use std::to_bytes;
-
 /// The specific types of unsupported syntax
-#[deriving(Eq)]
+#[deriving(Eq, Hash)]
 pub enum ObsoleteSyntax {
     ObsoleteSwap,
     ObsoleteUnsafeBlock,
@@ -46,13 +44,6 @@ pub enum ObsoleteSyntax {
     ObsoleteManagedVec,
 }
 
-impl to_bytes::IterBytes for ObsoleteSyntax {
-    #[inline]
-    fn iter_bytes(&self, lsb0: bool, f: to_bytes::Cb) -> bool {
-        (*self as uint).iter_bytes(lsb0, f)
-    }
-}
-
 pub trait ParserObsoleteMethods {
     /// Reports an obsolete syntax non-fatal error.
     fn obsolete(&mut self, sp: Span, kind: ObsoleteSyntax);

src/libsyntax/parse/token.rs

@@ -23,7 +23,7 @@ use std::local_data;
 use std::path::BytesContainer;
 
 #[allow(non_camel_case_types)]
-#[deriving(Clone, Encodable, Decodable, Eq, IterBytes)]
+#[deriving(Clone, Encodable, Decodable, Eq, Hash)]
 pub enum BinOp {
     PLUS,
     MINUS,
@@ -38,7 +38,7 @@ pub enum BinOp {
 }
 
 #[allow(non_camel_case_types)]
-#[deriving(Clone, Encodable, Decodable, Eq, IterBytes)]
+#[deriving(Clone, Encodable, Decodable, Eq, Hash)]
 pub enum Token {
     /* Expression-operator symbols. */
     EQ,
@@ -102,7 +102,7 @@ pub enum Token {
     EOF,
 }
 
-#[deriving(Clone, Encodable, Decodable, Eq, IterBytes)]
+#[deriving(Clone, Encodable, Decodable, Eq, Hash)]
 /// For interpolation during macro expansion.
 pub enum Nonterminal {
     NtItem(@ast::Item),
@@ -536,7 +536,7 @@ pub fn get_ident_interner() -> @IdentInterner {
 /// destroyed. In particular, they must not access string contents. This can
 /// be fixed in the future by just leaking all strings until task death
 /// somehow.
-#[deriving(Clone, Eq, IterBytes, Ord, TotalEq, TotalOrd)]
+#[deriving(Clone, Eq, Hash, Ord, TotalEq, TotalOrd)]
 pub struct InternedString {
     priv string: RcStr,
 }

src/libsyntax/util/interner.rs

@@ -18,7 +18,7 @@ use collections::HashMap;
 use std::cast;
 use std::cell::RefCell;
 use std::cmp::Equiv;
-use std::hash_old::Hash;
+use std::hash::Hash;
 use std::rc::Rc;
 
 pub struct Interner<T> {
@@ -27,7 +27,7 @@ pub struct Interner<T> {
 }
 
 // when traits can extend traits, we should extend index<Name,T> to get []
-impl<T:Eq + IterBytes + Hash + Freeze + Clone + 'static> Interner<T> {
+impl<T:Eq + Hash + Freeze + Clone + 'static> Interner<T> {
     pub fn new() -> Interner<T> {
         Interner {
             map: RefCell::new(HashMap::new()),
@@ -75,7 +75,7 @@ impl<T:Eq + IterBytes + Hash + Freeze + Clone + 'static> Interner<T> {
         vect.get().len()
     }
 
-    pub fn find_equiv<Q:Hash + IterBytes + Equiv<T>>(&self, val: &Q)
+    pub fn find_equiv<Q:Hash + Equiv<T>>(&self, val: &Q)
                                               -> Option<Name> {
         let map = self.map.borrow();
         match map.get().find_equiv(val) {
@@ -85,7 +85,7 @@ impl<T:Eq + IterBytes + Hash + Freeze + Clone + 'static> Interner<T> {
     }
 }
 
-#[deriving(Clone, Eq, IterBytes, Ord)]
+#[deriving(Clone, Eq, Hash, Ord)]
 pub struct RcStr {
     priv string: Rc<~str>,
 }
@@ -207,7 +207,7 @@ impl StrInterner {
         vect.get().len()
     }
 
-    pub fn find_equiv<Q:Hash + IterBytes + Equiv<RcStr>>(&self, val: &Q)
+    pub fn find_equiv<Q:Hash + Equiv<RcStr>>(&self, val: &Q)
                                                          -> Option<Name> {
         let map = self.map.borrow();
         match map.get().find_equiv(val) {

src/libuuid/lib.rs

@@ -74,7 +74,7 @@ use std::rand;
 use std::rand::Rng;
 use std::cmp::Eq;
 use std::cast::{transmute,transmute_copy};
-use std::to_bytes::{IterBytes, Cb};
+use std::hash::{Hash, sip};
 
 use serialize::{Encoder, Encodable, Decoder, Decodable};
 
@@ -114,9 +114,9 @@ pub struct Uuid {
     /// The 128-bit number stored in 16 bytes
     bytes: UuidBytes
 }
-impl IterBytes for Uuid {
-    fn iter_bytes(&self, _: bool, f: Cb) -> bool {
-        f(self.bytes.slice_from(0))
+impl Hash for Uuid {
+    fn hash(&self, s: &mut sip::SipState) {
+        self.bytes.slice_from(0).hash(s)
     }
 }
 

src/test/run-pass/deriving-global.rs

@@ -27,21 +27,18 @@ mod submod {
     // function calls, then being in a submodule will (correctly)
     // cause errors about unrecognised module `std` (or `extra`)
     #[deriving(Eq, Ord, TotalEq, TotalOrd,
-               IterBytes,
                Clone, DeepClone,
                ToStr, Rand,
                Encodable, Decodable)]
     enum A { A1(uint), A2(int) }
 
     #[deriving(Eq, Ord, TotalEq, TotalOrd,
-               IterBytes,
                Clone, DeepClone,
                ToStr, Rand,
                Encodable, Decodable)]
     struct B { x: uint, y: int }
 
     #[deriving(Eq, Ord, TotalEq, TotalOrd,
-               IterBytes,
                Clone, DeepClone,
                ToStr, Rand,
                Encodable, Decodable)]

src/test/run-pass/deriving-meta-multiple.rs

@@ -10,11 +10,8 @@
 // option. This file may not be copied, modified, or distributed
 // except according to those terms.
 
-use std::hash_old::Hash;
-
 #[deriving(Eq)]
 #[deriving(Clone)]
-#[deriving(IterBytes)]
 struct Foo {
     bar: uint,
     baz: int
@@ -25,5 +22,4 @@ pub fn main() {
 
     a == a;    // check for Eq impl w/o testing its correctness
     a.clone(); // check for Clone impl w/o testing its correctness
-    a.hash();  // check for IterBytes impl w/o testing its correctness
 }

src/test/run-pass/deriving-meta.rs

@@ -10,9 +10,7 @@
 // option. This file may not be copied, modified, or distributed
 // except according to those terms.
 
-use std::hash_old::Hash;
-
-#[deriving(Eq, Clone, IterBytes)]
+#[deriving(Eq, Clone)]
 struct Foo {
     bar: uint,
     baz: int
@@ -23,5 +21,4 @@ pub fn main() {
 
     a == a;    // check for Eq impl w/o testing its correctness
     a.clone(); // check for Clone impl w/o testing its correctness
-    a.hash();  // check for IterBytes impl w/o testing its correctness
 }

src/test/run-pass/deriving-via-extension-hash-enum.rs

@@ -10,13 +10,13 @@
 // option. This file may not be copied, modified, or distributed
 // except according to those terms.
 
-#[deriving(IterBytes)]
+#[deriving(Hash)]
 enum Foo {
     Bar(int, char),
     Baz(char, int)
 }
 
-#[deriving(IterBytes)]
+#[deriving(Hash)]
 enum A {
     B,
     C,

src/test/run-pass/deriving-via-extension-hash-struct.rs

@@ -10,7 +10,7 @@
 // option. This file may not be copied, modified, or distributed
 // except according to those terms.
 
-#[deriving(IterBytes)]
+#[deriving(Hash)]
 struct Foo {
     x: int,
     y: int,

src/test/run-pass/deriving-via-extension-type-params.rs

@@ -11,7 +11,7 @@
 // except according to those terms.
 
 #[deriving(Eq)]
-#[deriving(IterBytes)]
+#[deriving(Hash)]
 struct Foo<T> {
     x: int,
     y: T,

src/test/run-pass/regions-mock-tcx.rs

@@ -85,7 +85,7 @@ impl<'tcx,'ast> TypeContext<'tcx, 'ast> {
     }
 }
 
-#[deriving(Eq, IterBytes)]
+#[deriving(Eq, Hash)]
 struct NodeId {
     id: uint
 }

src/test/run-pass/typeid-intrinsic.rs

@@ -15,7 +15,7 @@
 extern crate other1 = "typeid-intrinsic";
 extern crate other2 = "typeid-intrinsic2";
 
-use std::hash_old::Hash;
+use std::hash;
 use std::intrinsics;
 use std::intrinsics::TypeId;
 
@@ -71,5 +71,5 @@ pub fn main() {
     // check it has a hash
     let (a, b) = (TypeId::of::<uint>(), TypeId::of::<uint>());
 
-    assert_eq!(a.hash(), b.hash());
+    assert_eq!(hash::hash(&a), hash::hash(&b));
 }