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Move hash module from collections to core

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This commit is contained in:
Steven Fackler 2014-12-12 18:43:07 -08:00
parent b497f05008
commit 24a8ef63ff
18 changed files with 433 additions and 172 deletions
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9
src/liballoc/boxed.rs
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@ -15,6 +15,7 @@ use core::clone::Clone;
use core::cmp::{PartialEq, PartialOrd, Eq, Ord, Ordering};
use core::default::Default;
use core::fmt;
use core::hash::{mod, Hash};
use core::kinds::Sized;
use core::mem;
use core::option::Option;
@ -93,6 +94,14 @@ impl<Sized? T: Ord> Ord for Box<T> {
}
impl<Sized? T: Eq> Eq for Box<T> {}
impl<S: hash::Writer, Sized? T: Hash<S>> Hash<S> for Box<T> {
#[inline]
fn hash(&self, state: &mut S) {
(**self).hash(state);
}
}
/// Extension methods for an owning `Any` trait object.
#[unstable = "post-DST and coherence changes, this will not be a trait but \
rather a direct `impl` on `Box<Any>`"]

2
src/liballoc/lib.rs
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@ -64,7 +64,7 @@
html_root_url = "http://doc.rust-lang.org/nightly/")]
#![no_std]
#![feature(lang_items, phase, unsafe_destructor)]
#![feature(lang_items, phase, unsafe_destructor, default_type_params)]
#[phase(plugin, link)]
extern crate core;

9
src/liballoc/rc.rs
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@ -147,6 +147,7 @@ use core::clone::Clone;
use core::cmp::{PartialEq, PartialOrd, Eq, Ord, Ordering};
use core::default::Default;
use core::fmt;
use core::hash::{mod, Hash};
use core::kinds::marker;
use core::mem::{transmute, min_align_of, size_of, forget};
use core::ops::{Deref, Drop};
@ -594,6 +595,14 @@ impl<T: Ord> Ord for Rc<T> {
fn cmp(&self, other: &Rc<T>) -> Ordering { (**self).cmp(&**other) }
}
// FIXME (#18248) Make `T` `Sized?`
impl<S: hash::Writer, T: Hash<S>> Hash<S> for Rc<T> {
#[inline]
fn hash(&self, state: &mut S) {
(**self).hash(state);
}
}
#[experimental = "Show is experimental."]
impl<T: fmt::Show> fmt::Show for Rc<T> {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {

3
src/libcollections/lib.rs
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@ -67,7 +67,6 @@ pub mod slice;
pub mod str;
pub mod string;
pub mod vec;
pub mod hash;
pub mod vec_map;
pub mod bitv {
@ -116,5 +115,5 @@ mod std {
pub use core::clone; // deriving(Clone)
pub use core::cmp; // deriving(Eq, Ord, etc.)
pub use core::kinds; // deriving(Copy)
pub use hash; // deriving(Hash)
pub use core::hash; // deriving(Hash)
}

2
src/libcollections/str.rs
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@ -60,10 +60,10 @@ use self::DecompositionType::*;
use core::borrow::{BorrowFrom, Cow, ToOwned};
use core::default::Default;
use core::fmt;
use core::hash;
use core::cmp;
use core::iter::AdditiveIterator;
use hash;
use ring_buf::RingBuf;
use string::String;
use unicode;

2
src/libcollections/string.rs
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@ -17,13 +17,13 @@ use core::prelude::*;
use core::borrow::{Cow, IntoCow};
use core::default::Default;
use core::fmt;
use core::hash;
use core::mem;
use core::ptr;
use core::ops;
// FIXME: ICE's abound if you import the `Slice` type while importing `Slice` trait
use core::raw::Slice as RawSlice;
use hash;
use slice::CloneSliceExt;
use str;
use str::{CharRange, CowString, FromStr, StrAllocating, Owned};

8
src/libcollections/vec.rs
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@ -20,6 +20,7 @@ use core::borrow::{Cow, IntoCow};
use core::cmp::max;
use core::default::Default;
use core::fmt;
use core::hash::{mod, Hash};
use core::kinds::marker::{ContravariantLifetime, InvariantType};
use core::kinds::Sized;
use core::mem;
@ -619,6 +620,13 @@ impl<T: Ord> Ord for Vec<T> {
}
}
impl<S: hash::Writer, T: Hash<S>> Hash<S> for Vec<T> {
#[inline]
fn hash(&self, state: &mut S) {
self.as_slice().hash(state);
}
}
// FIXME: #13996: need a way to mark the return value as `noalias`
#[inline(never)]
unsafe fn alloc_or_realloc<T>(ptr: *mut T, old_size: uint, size: uint) -> *mut T {

4
src/libcollections/vec_map.rs
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@ -17,12 +17,12 @@ use core::prelude::*;
use core::default::Default;
use core::fmt;
use core::hash::{Hash, Writer};
use core::iter;
use core::iter::{Enumerate, FilterMap};
use core::mem::replace;
use core::ops::FnOnce;
use hash::{Hash, Writer};
use {vec, slice};
use vec::Vec;
@ -642,7 +642,7 @@ pub type MoveItems<V> = FilterMap<
mod test_map {
use std::prelude::*;
use vec::Vec;
use hash::hash;
use core::hash::hash;
use super::VecMap;

164
src/libcollections/hash/mod.rs → src/libcore/hash/mod.rs
View File

@ -61,16 +61,12 @@
#![allow(unused_must_use)]
use core::prelude::*;
use prelude::*;
use alloc::boxed::Box;
use alloc::rc::Rc;
use core::borrow::{Cow, ToOwned};
use core::intrinsics::TypeId;
use core::mem;
use core::num::Int;
use vec::Vec;
use borrow::{Cow, ToOwned};
use intrinsics::TypeId;
use mem;
use num::Int;
/// Reexport the `sip::hash` function as our default hasher.
pub use self::sip::hash as hash;
@ -92,6 +88,7 @@ pub trait Hasher<S> {
fn hash<Sized? T: Hash<S>>(&self, value: &T) -> u64;
}
#[allow(missing_docs)]
pub trait Writer {
fn write(&mut self, bytes: &[u8]);
}
@ -103,7 +100,7 @@ macro_rules! impl_hash {
impl<S: Writer> Hash<S> for $ty {
#[inline]
fn hash(&self, state: &mut S) {
let a: [u8, ..::core::$ty::BYTES] = unsafe {
let a: [u8, ..::$ty::BYTES] = unsafe {
mem::transmute((*self as $uty).to_le() as $ty)
};
state.write(a.as_slice())
@ -197,13 +194,6 @@ impl<S: Writer, T: Hash<S>> Hash<S> for [T] {
}
impl<S: Writer, T: Hash<S>> Hash<S> for Vec<T> {
#[inline]
fn hash(&self, state: &mut S) {
self.as_slice().hash(state);
}
}
impl<'a, S: Writer, Sized? T: Hash<S>> Hash<S> for &'a T {
#[inline]
fn hash(&self, state: &mut S) {
@ -218,36 +208,6 @@ impl<'a, S: Writer, Sized? T: Hash<S>> Hash<S> for &'a mut T {
}
}
impl<S: Writer, Sized? T: Hash<S>> Hash<S> for Box<T> {
#[inline]
fn hash(&self, state: &mut S) {
(**self).hash(state);
}
}
// FIXME (#18248) Make `T` `Sized?`
impl<S: Writer, T: Hash<S>> Hash<S> for Rc<T> {
#[inline]
fn hash(&self, state: &mut S) {
(**self).hash(state);
}
}
impl<S: Writer, T: Hash<S>> Hash<S> for Option<T> {
#[inline]
fn hash(&self, state: &mut S) {
match *self {
Some(ref x) => {
0u8.hash(state);
x.hash(state);
}
None => {
1u8.hash(state);
}
}
}
}
impl<S: Writer, T> Hash<S> for *const T {
#[inline]
fn hash(&self, state: &mut S) {
@ -273,119 +233,9 @@ impl<S: Writer> Hash<S> for TypeId {
}
}
impl<S: Writer, T: Hash<S>, U: Hash<S>> Hash<S> for Result<T, U> {
#[inline]
fn hash(&self, state: &mut S) {
match *self {
Ok(ref t) => { 1u.hash(state); t.hash(state); }
Err(ref t) => { 2u.hash(state); t.hash(state); }
}
}
}
impl<'a, T, Sized? B, S> Hash<S> for Cow<'a, T, B> where B: Hash<S> + ToOwned<T> {
#[inline]
fn hash(&self, state: &mut S) {
Hash::hash(&**self, state)
}
}
//////////////////////////////////////////////////////////////////////////////
#[cfg(test)]
mod tests {
use core::kinds::Sized;
use std::mem;
use slice::SliceExt;
use super::{Hash, Hasher, Writer};
struct MyWriterHasher;
impl Hasher<MyWriter> for MyWriterHasher {
fn hash<Sized? T: Hash<MyWriter>>(&self, value: &T) -> u64 {
let mut state = MyWriter { hash: 0 };
value.hash(&mut state);
state.hash
}
}
struct MyWriter {
hash: u64,
}
impl Writer for MyWriter {
// Most things we'll just add up the bytes.
fn write(&mut self, buf: &[u8]) {
for byte in buf.iter() {
self.hash += *byte as u64;
}
}
}
#[test]
fn test_writer_hasher() {
use alloc::boxed::Box;
let hasher = MyWriterHasher;
assert_eq!(hasher.hash(&()), 0);
assert_eq!(hasher.hash(&5u8), 5);
assert_eq!(hasher.hash(&5u16), 5);
assert_eq!(hasher.hash(&5u32), 5);
assert_eq!(hasher.hash(&5u64), 5);
assert_eq!(hasher.hash(&5u), 5);
assert_eq!(hasher.hash(&5i8), 5);
assert_eq!(hasher.hash(&5i16), 5);
assert_eq!(hasher.hash(&5i32), 5);
assert_eq!(hasher.hash(&5i64), 5);
assert_eq!(hasher.hash(&5i), 5);
assert_eq!(hasher.hash(&false), 0);
assert_eq!(hasher.hash(&true), 1);
assert_eq!(hasher.hash(&'a'), 97);
let s: &str = "a";
assert_eq!(hasher.hash(& s), 97 + 0xFF);
// FIXME (#18283) Enable test
//let s: Box<str> = box "a";
//assert_eq!(hasher.hash(& s), 97 + 0xFF);
let cs: &[u8] = &[1u8, 2u8, 3u8];
assert_eq!(hasher.hash(& cs), 9);
let cs: Box<[u8]> = box [1u8, 2u8, 3u8];
assert_eq!(hasher.hash(& cs), 9);
// FIXME (#18248) Add tests for hashing Rc<str> and Rc<[T]>
unsafe {
let ptr: *const int = mem::transmute(5i);
assert_eq!(hasher.hash(&ptr), 5);
}
unsafe {
let ptr: *mut int = mem::transmute(5i);
assert_eq!(hasher.hash(&ptr), 5);
}
}
struct Custom {
hash: u64
}
impl Hash<u64> for Custom {
fn hash(&self, state: &mut u64) {
*state = self.hash;
}
}
#[test]
fn test_custom_state() {
let custom = Custom { hash: 5 };
let mut state = 0;
custom.hash(&mut state);
assert_eq!(state, 5);
}
}

5
src/libcollections/hash/sip.rs → src/libcore/hash/sip.rs
View File

@ -24,9 +24,8 @@
//! As such, all cryptographic uses of this implementation are strongly
//! discouraged.
use core::prelude::*;
use core::default::Default;
use prelude::*;
use default::Default;
use super::{Hash, Hasher, Writer};

2
src/libcore/lib.rs
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@ -121,6 +121,7 @@ pub mod simd;
pub mod slice;
pub mod str;
pub mod tuple;
pub mod hash;
// FIXME #15320: primitive documentation needs top-level modules, this
// should be `core::tuple::unit`.
#[path = "tuple/unit.rs"]
@ -142,4 +143,5 @@ mod std {
pub use kinds;
pub use option;
pub use fmt;
pub use hash;
}

2
src/libcore/option.rs
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@ -164,7 +164,7 @@ use ops::{Deref, FnOnce};
// which basically means it must be `Option`.
/// The `Option` type.
#[deriving(Clone, PartialEq, PartialOrd, Eq, Ord, Show)]
#[deriving(Clone, PartialEq, PartialOrd, Eq, Ord, Show, Hash)]
#[stable]
pub enum Option<T> {
/// No value

2
src/libcore/result.rs
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@ -244,7 +244,7 @@ use ops::{FnMut, FnOnce};
/// `Result` is a type that represents either success (`Ok`) or failure (`Err`).
///
/// See the [`std::result`](index.html) module documentation for details.
#[deriving(Clone, PartialEq, PartialOrd, Eq, Ord, Show)]
#[deriving(Clone, PartialEq, PartialOrd, Eq, Ord, Show, Hash)]
#[must_use]
#[stable]
pub enum Result<T, E> {

101
src/libcoretest/hash/mod.rs Normal file
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@ -0,0 +1,101 @@
// Copyright 2014 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 core::kinds::Sized;
use std::mem;
use core::slice::SliceExt;
use core::hash::{Hash, Hasher, Writer};
struct MyWriterHasher;
impl Hasher<MyWriter> for MyWriterHasher {
fn hash<Sized? T: Hash<MyWriter>>(&self, value: &T) -> u64 {
let mut state = MyWriter { hash: 0 };
value.hash(&mut state);
state.hash
}
}
struct MyWriter {
hash: u64,
}
impl Writer for MyWriter {
// Most things we'll just add up the bytes.
fn write(&mut self, buf: &[u8]) {
for byte in buf.iter() {
self.hash += *byte as u64;
}
}
}
#[test]
fn test_writer_hasher() {
let hasher = MyWriterHasher;
assert_eq!(hasher.hash(&()), 0);
assert_eq!(hasher.hash(&5u8), 5);
assert_eq!(hasher.hash(&5u16), 5);
assert_eq!(hasher.hash(&5u32), 5);
assert_eq!(hasher.hash(&5u64), 5);
assert_eq!(hasher.hash(&5u), 5);
assert_eq!(hasher.hash(&5i8), 5);
assert_eq!(hasher.hash(&5i16), 5);
assert_eq!(hasher.hash(&5i32), 5);
assert_eq!(hasher.hash(&5i64), 5);
assert_eq!(hasher.hash(&5i), 5);
assert_eq!(hasher.hash(&false), 0);
assert_eq!(hasher.hash(&true), 1);
assert_eq!(hasher.hash(&'a'), 97);
let s: &str = "a";
assert_eq!(hasher.hash(& s), 97 + 0xFF);
// FIXME (#18283) Enable test
//let s: Box<str> = box "a";
//assert_eq!(hasher.hash(& s), 97 + 0xFF);
let cs: &[u8] = &[1u8, 2u8, 3u8];
assert_eq!(hasher.hash(& cs), 9);
let cs: Box<[u8]> = box [1u8, 2u8, 3u8];
assert_eq!(hasher.hash(& cs), 9);
// FIXME (#18248) Add tests for hashing Rc<str> and Rc<[T]>
unsafe {
let ptr: *const int = mem::transmute(5i);
assert_eq!(hasher.hash(&ptr), 5);
}
unsafe {
let ptr: *mut int = mem::transmute(5i);
assert_eq!(hasher.hash(&ptr), 5);
}
}
struct Custom {
hash: u64
}
impl Hash<u64> for Custom {
fn hash(&self, state: &mut u64) {
*state = self.hash;
}
}
#[test]
fn test_custom_state() {
let custom = Custom { hash: 5 };
let mut state = 0;
custom.hash(&mut state);
assert_eq!(state, 5);
}

283
src/libcoretest/hash/sip.rs Normal file
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@ -0,0 +1,283 @@
// Copyright 2014 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 test::Bencher;
use std::prelude::*;
use std::fmt;
use str::Str;
use string::String;
use slice::{AsSlice, SlicePrelude};
use vec::Vec;
use core::hash::{Hash, Writer};
use core::hash::sip::{SipState, hash, hash_with_keys};
// Hash just the bytes of the slice, without length prefix
struct Bytes<'a>(&'a [u8]);
impl<'a, S: Writer> Hash<S> for Bytes<'a> {
#[allow(unused_must_use)]
fn hash(&self, state: &mut S) {
let Bytes(v) = *self;
state.write(v);
}
}
#[test]
#[allow(unused_must_use)]
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 = Vec::new();
let mut t = 0;
let mut state_inc = SipState::new_with_keys(k0, k1);
let mut state_full = SipState::new_with_keys(k0, k1);
fn to_hex_str(r: &[u8, ..8]) -> String {
let mut s = String::new();
for b in r.iter() {
s.push_str(format!("{}", fmt::radix(*b, 16)).as_slice());
}
s
}
fn result_bytes(h: u64) -> Vec<u8> {
vec![(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(h: u64) -> String {
let r = result_bytes(h);
let mut s = String::new();
for b in r.iter() {
s.push_str(format!("{}", fmt::radix(*b, 16)).as_slice());
}
s
}
while t < 64 {
debug!("siphash test {}: {}", t, buf);
let vec = u8to64_le!(vecs[t], 0);
let out = hash_with_keys(k0, k1, &Bytes(buf.as_slice()));
debug!("got {}, expected {}", out, vec);
assert_eq!(vec, out);
state_full.reset();
state_full.write(buf.as_slice());
let f = result_str(state_full.result());
let i = result_str(state_inc.result());
let v = to_hex_str(&vecs[t]);
debug!("{}: ({}) => inc={} full={}", t, v, i, f);
assert_eq!(f, i);
assert_eq!(f, v);
buf.push(t as u8);
state_inc.write(&[t as u8]);
t += 1;
}
}
#[test] #[cfg(target_arch = "arm")]
fn test_hash_uint() {
let val = 0xdeadbeef_deadbeef_u64;
assert!(hash(&(val as u64)) != hash(&(val as uint)));
assert_eq!(hash(&(val as u32)), hash(&(val as uint)));
}
#[test] #[cfg(target_arch = "x86_64")]
fn test_hash_uint() {
let val = 0xdeadbeef_deadbeef_u64;
assert_eq!(hash(&(val as u64)), hash(&(val as uint)));
assert!(hash(&(val as u32)) != hash(&(val as uint)));
}
#[test] #[cfg(target_arch = "x86")]
fn test_hash_uint() {
let val = 0xdeadbeef_deadbeef_u64;
assert!(hash(&(val as u64)) != hash(&(val as uint)));
assert_eq!(hash(&(val as u32)), hash(&(val as uint)));
}
#[test]
fn test_hash_idempotent() {
let val64 = 0xdeadbeef_deadbeef_u64;
assert_eq!(hash(&val64), hash(&val64));
let val32 = 0xdeadbeef_u32;
assert_eq!(hash(&val32), hash(&val32));
}
#[test]
fn test_hash_no_bytes_dropped_64() {
let val = 0xdeadbeef_deadbeef_u64;
assert!(hash(&val) != hash(&zero_byte(val, 0)));
assert!(hash(&val) != hash(&zero_byte(val, 1)));
assert!(hash(&val) != hash(&zero_byte(val, 2)));
assert!(hash(&val) != hash(&zero_byte(val, 3)));
assert!(hash(&val) != hash(&zero_byte(val, 4)));
assert!(hash(&val) != hash(&zero_byte(val, 5)));
assert!(hash(&val) != hash(&zero_byte(val, 6)));
assert!(hash(&val) != hash(&zero_byte(val, 7)));
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!(hash(&val) != hash(&zero_byte(val, 0)));
assert!(hash(&val) != hash(&zero_byte(val, 1)));
assert!(hash(&val) != hash(&zero_byte(val, 2)));
assert!(hash(&val) != hash(&zero_byte(val, 3)));
fn zero_byte(val: u32, byte: uint) -> u32 {
assert!(byte < 4);
val & !(0xff << (byte * 8))
}
}
#[test]
fn test_hash_no_concat_alias() {
let s = ("aa", "bb");
let t = ("aabb", "");
let u = ("a", "abb");
assert!(s != t && t != u);
assert!(hash(&s) != hash(&t) && hash(&s) != hash(&u));
let v: (&[u8], &[u8], &[u8]) = (&[1u8], &[0u8, 0], &[0u8]);
let w: (&[u8], &[u8], &[u8]) = (&[1u8, 0, 0, 0], &[], &[]);
assert!(v != w);
assert!(hash(&v) != hash(&w));
}
#[bench]
fn bench_str_under_8_bytes(b: &mut Bencher) {
let s = "foo";
b.iter(|| {
assert_eq!(hash(&s), 16262950014981195938);
})
}
#[bench]
fn bench_str_of_8_bytes(b: &mut Bencher) {
let s = "foobar78";
b.iter(|| {
assert_eq!(hash(&s), 4898293253460910787);
})
}
#[bench]
fn bench_str_over_8_bytes(b: &mut Bencher) {
let s = "foobarbaz0";
b.iter(|| {
assert_eq!(hash(&s), 10581415515220175264);
})
}
#[bench]
fn bench_long_str(b: &mut Bencher) {
let s = "Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod tempor \
incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud \
exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. Duis aute \
irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla \
pariatur. Excepteur sint occaecat cupidatat non proident, sunt in culpa qui \
officia deserunt mollit anim id est laborum.";
b.iter(|| {
assert_eq!(hash(&s), 17717065544121360093);
})
}
#[bench]
fn bench_u64(b: &mut Bencher) {
let u = 16262950014981195938u64;
b.iter(|| {
assert_eq!(hash(&u), 5254097107239593357);
})
}

3
src/libcoretest/lib.rs
View File

@ -7,7 +7,7 @@
// <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.
#![feature(globs, unsafe_destructor, macro_rules, slicing_syntax)]
#![feature(globs, unsafe_destructor, macro_rules, slicing_syntax, default_type_params)]
#![feature(unboxed_closures)]
extern crate core;
@ -21,6 +21,7 @@ mod char;
mod cmp;
mod finally;
mod fmt;
mod hash;
mod iter;
mod mem;
mod num;

2
src/librustrt/c_str.rs
View File

@ -70,7 +70,7 @@
use core::prelude::*;
use collections::string::String;
use collections::hash;
use core::hash;
use core::fmt;
use core::kinds::{Sized, marker};
use core::mem;

2
src/libstd/hash.rs
View File

@ -61,7 +61,7 @@
#![experimental]
pub use core_collections::hash::{Hash, Hasher, Writer, hash, sip};
pub use core::hash::{Hash, Hasher, Writer, hash, sip};
use core::kinds::Sized;
use default::Default;