965 lines
27 KiB
Rust
965 lines
27 KiB
Rust
// Copyright 2012-2014 The Rust Project Developers. See the COPYRIGHT
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// file at the top-level directory of this distribution and at
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// http://rust-lang.org/COPYRIGHT.
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//
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// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
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// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
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// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
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// option. This file may not be copied, modified, or distributed
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// except according to those terms.
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//! A simple map based on a vector for small integer keys. Space requirements
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//! are O(highest integer key).
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#![allow(missing_doc)]
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use core::prelude::*;
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use core::default::Default;
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use core::fmt;
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use core::iter;
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use core::iter::{Enumerate, FilterMap};
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use core::mem::replace;
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use {Mutable, Map, MutableMap, MutableSeq};
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use {vec, slice};
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use vec::Vec;
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use hash;
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use hash::Hash;
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/// A map optimized for small integer keys.
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///
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/// # Example
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///
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/// ```
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/// use std::collections::SmallIntMap;
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///
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/// let mut months = SmallIntMap::new();
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/// months.insert(1, "Jan");
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/// months.insert(2, "Feb");
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/// months.insert(3, "Mar");
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///
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/// if !months.contains_key(&12) {
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/// println!("The end is near!");
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/// }
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///
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/// assert_eq!(months.find(&1), Some(&"Jan"));
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///
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/// match months.find_mut(&3) {
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/// Some(value) => *value = "Venus",
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/// None => (),
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/// }
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///
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/// assert_eq!(months.find(&3), Some(&"Venus"));
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///
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/// // Print out all months
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/// for (key, value) in months.iter() {
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/// println!("month {} is {}", key, value);
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/// }
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///
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/// months.clear();
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/// assert!(months.is_empty());
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/// ```
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#[deriving(PartialEq, Eq)]
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pub struct SmallIntMap<T> {
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v: Vec<Option<T>>,
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}
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impl<V> Collection for SmallIntMap<V> {
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/// Returns the number of elements in the map.
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fn len(&self) -> uint {
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self.v.iter().filter(|elt| elt.is_some()).count()
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}
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/// Returns`true` if there are no elements in the map.
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fn is_empty(&self) -> bool {
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self.v.iter().all(|elt| elt.is_none())
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}
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}
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impl<V> Mutable for SmallIntMap<V> {
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/// Clears the map, removing all key-value pairs.
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fn clear(&mut self) { self.v.clear() }
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}
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impl<V> Map<uint, V> for SmallIntMap<V> {
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/// Returns a reference to the value corresponding to the key.
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fn find<'a>(&'a self, key: &uint) -> Option<&'a V> {
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if *key < self.v.len() {
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match self.v[*key] {
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Some(ref value) => Some(value),
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None => None
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}
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} else {
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None
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}
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}
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}
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impl<V> MutableMap<uint, V> for SmallIntMap<V> {
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/// Returns a mutable reference to the value corresponding to the key.
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fn find_mut<'a>(&'a mut self, key: &uint) -> Option<&'a mut V> {
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if *key < self.v.len() {
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match *self.v.get_mut(*key) {
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Some(ref mut value) => Some(value),
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None => None
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}
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} else {
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None
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}
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}
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/// Inserts a key-value pair into the map. An existing value for a
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/// key is replaced by the new value. Returns `true` if the key did
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/// not already exist in the map.
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fn insert(&mut self, key: uint, value: V) -> bool {
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let exists = self.contains_key(&key);
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let len = self.v.len();
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if len <= key {
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self.v.grow_fn(key - len + 1, |_| None);
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}
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*self.v.get_mut(key) = Some(value);
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!exists
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}
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/// Removes a key-value pair from the map. Returns `true` if the key
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/// was present in the map.
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fn remove(&mut self, key: &uint) -> bool {
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self.pop(key).is_some()
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}
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/// Inserts a key-value pair into the map. If the key already had a value
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/// present in the map, that value is returned. Otherwise `None` is returned.
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fn swap(&mut self, key: uint, value: V) -> Option<V> {
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match self.find_mut(&key) {
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Some(loc) => { return Some(replace(loc, value)); }
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None => ()
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}
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self.insert(key, value);
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return None;
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}
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/// Removes a key from the map, returning the value at the key if the key
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/// was previously in the map.
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fn pop(&mut self, key: &uint) -> Option<V> {
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if *key >= self.v.len() {
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return None;
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}
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self.v.get_mut(*key).take()
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}
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}
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impl<V> Default for SmallIntMap<V> {
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#[inline]
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fn default() -> SmallIntMap<V> { SmallIntMap::new() }
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}
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impl<V:Clone> Clone for SmallIntMap<V> {
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#[inline]
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fn clone(&self) -> SmallIntMap<V> {
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SmallIntMap { v: self.v.clone() }
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}
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#[inline]
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fn clone_from(&mut self, source: &SmallIntMap<V>) {
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self.v.reserve(source.v.len());
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for (i, w) in self.v.iter_mut().enumerate() {
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*w = source.v[i].clone();
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}
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}
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}
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impl <S: hash::Writer, T: Hash<S>> Hash<S> for SmallIntMap<T> {
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fn hash(&self, state: &mut S) {
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self.v.hash(state)
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}
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}
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impl<V> SmallIntMap<V> {
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/// Creates an empty `SmallIntMap`.
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///
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/// # Example
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///
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/// ```
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/// use std::collections::SmallIntMap;
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/// let mut map: SmallIntMap<&str> = SmallIntMap::new();
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/// ```
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pub fn new() -> SmallIntMap<V> { SmallIntMap{v: vec!()} }
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/// Creates an empty `SmallIntMap` with space for at least `capacity`
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/// elements before resizing.
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///
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/// # Example
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///
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/// ```
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/// use std::collections::SmallIntMap;
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/// let mut map: SmallIntMap<&str> = SmallIntMap::with_capacity(10);
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/// ```
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pub fn with_capacity(capacity: uint) -> SmallIntMap<V> {
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SmallIntMap { v: Vec::with_capacity(capacity) }
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}
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/// Retrieves a value for the given key.
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/// See [`find`](../trait.Map.html#tymethod.find) for a non-failing alternative.
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///
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/// # Failure
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///
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/// Fails if the key is not present.
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///
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/// # Example
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///
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/// ```
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/// #![allow(deprecated)]
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///
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/// use std::collections::SmallIntMap;
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///
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/// let mut map = SmallIntMap::new();
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/// map.insert(1, "a");
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/// assert_eq!(map.get(&1), &"a");
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/// ```
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#[deprecated = "prefer using indexing, e.g., map[0]"]
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pub fn get<'a>(&'a self, key: &uint) -> &'a V {
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self.find(key).expect("key not present")
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}
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/// Returns an iterator visiting all keys in ascending order by the keys.
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/// The iterator's element type is `uint`.
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pub fn keys<'r>(&'r self) -> Keys<'r, V> {
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self.iter().map(|(k, _v)| k)
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}
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/// Returns an iterator visiting all values in ascending order by the keys.
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/// The iterator's element type is `&'r V`.
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pub fn values<'r>(&'r self) -> Values<'r, V> {
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self.iter().map(|(_k, v)| v)
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}
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/// Returns an iterator visiting all key-value pairs in ascending order by the keys.
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/// The iterator's element type is `(uint, &'r V)`.
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///
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/// # Example
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///
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/// ```
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/// use std::collections::SmallIntMap;
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///
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/// let mut map = SmallIntMap::new();
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/// map.insert(1, "a");
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/// map.insert(3, "c");
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/// map.insert(2, "b");
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///
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/// // Print `1: a` then `2: b` then `3: c`
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/// for (key, value) in map.iter() {
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/// println!("{}: {}", key, value);
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/// }
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/// ```
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pub fn iter<'r>(&'r self) -> Entries<'r, V> {
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Entries {
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front: 0,
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back: self.v.len(),
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iter: self.v.iter()
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}
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}
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/// Deprecated: use `iter_mut`
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#[deprecated = "use iter_mut"]
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pub fn mut_iter<'r>(&'r mut self) -> MutEntries<'r, V> {
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self.iter_mut()
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}
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/// Returns an iterator visiting all key-value pairs in ascending order by the keys,
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/// with mutable references to the values.
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/// The iterator's element type is `(uint, &'r mut V)`.
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///
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/// # Example
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///
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/// ```
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/// use std::collections::SmallIntMap;
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///
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/// let mut map = SmallIntMap::new();
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/// map.insert(1, "a");
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/// map.insert(2, "b");
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/// map.insert(3, "c");
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///
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/// for (key, value) in map.iter_mut() {
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/// *value = "x";
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/// }
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///
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/// for (key, value) in map.iter() {
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/// assert_eq!(value, &"x");
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/// }
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/// ```
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pub fn iter_mut<'r>(&'r mut self) -> MutEntries<'r, V> {
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MutEntries {
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front: 0,
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back: self.v.len(),
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iter: self.v.iter_mut()
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}
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}
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/// Deprecated: use `into_iter` instead.
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#[deprecated = "use into_iter"]
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pub fn move_iter(&mut self)
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-> FilterMap<(uint, Option<V>), (uint, V),
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Enumerate<vec::MoveItems<Option<V>>>> {
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self.into_iter()
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}
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/// Returns an iterator visiting all key-value pairs in ascending order by
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/// the keys, emptying (but not consuming) the original `SmallIntMap`.
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/// The iterator's element type is `(uint, &'r V)`.
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///
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/// # Example
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///
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/// ```
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/// use std::collections::SmallIntMap;
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///
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/// let mut map = SmallIntMap::new();
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/// map.insert(1, "a");
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/// map.insert(3, "c");
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/// map.insert(2, "b");
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///
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/// // Not possible with .iter()
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/// let vec: Vec<(uint, &str)> = map.into_iter().collect();
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///
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/// assert_eq!(vec, vec![(1, "a"), (2, "b"), (3, "c")]);
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/// ```
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pub fn into_iter(&mut self)
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-> FilterMap<(uint, Option<V>), (uint, V),
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Enumerate<vec::MoveItems<Option<V>>>>
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{
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let values = replace(&mut self.v, vec!());
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values.into_iter().enumerate().filter_map(|(i, v)| {
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v.map(|v| (i, v))
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})
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}
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}
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impl<V:Clone> SmallIntMap<V> {
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/// Updates a value in the map. If the key already exists in the map,
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/// modifies the value with `ff` taking `oldval, newval`.
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/// Otherwise, sets the value to `newval`.
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/// Returns `true` if the key did not already exist in the map.
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///
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/// # Example
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///
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/// ```
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/// use std::collections::SmallIntMap;
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///
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/// let mut map = SmallIntMap::new();
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///
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/// // Key does not exist, will do a simple insert
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/// assert!(map.update(1, vec![1i, 2], |mut old, new| { old.extend(new.into_iter()); old }));
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/// assert_eq!(map[1], vec![1i, 2]);
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///
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/// // Key exists, update the value
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/// assert!(!map.update(1, vec![3i, 4], |mut old, new| { old.extend(new.into_iter()); old }));
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/// assert_eq!(map[1], vec![1i, 2, 3, 4]);
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/// ```
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pub fn update(&mut self, key: uint, newval: V, ff: |V, V| -> V) -> bool {
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self.update_with_key(key, newval, |_k, v, v1| ff(v,v1))
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}
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/// Updates a value in the map. If the key already exists in the map,
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/// modifies the value with `ff` taking `key, oldval, newval`.
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/// Otherwise, sets the value to `newval`.
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/// Returns `true` if the key did not already exist in the map.
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///
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/// # Example
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///
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/// ```
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/// use std::collections::SmallIntMap;
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///
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/// let mut map = SmallIntMap::new();
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///
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/// // Key does not exist, will do a simple insert
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/// assert!(map.update_with_key(7, 10, |key, old, new| (old + new) % key));
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/// assert_eq!(map[7], 10);
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///
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/// // Key exists, update the value
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/// assert!(!map.update_with_key(7, 20, |key, old, new| (old + new) % key));
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/// assert_eq!(map[7], 2);
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/// ```
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pub fn update_with_key(&mut self,
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key: uint,
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val: V,
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ff: |uint, V, V| -> V)
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-> bool {
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let new_val = match self.find(&key) {
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None => val,
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Some(orig) => ff(key, (*orig).clone(), val)
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};
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self.insert(key, new_val)
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}
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}
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impl<V: PartialOrd> PartialOrd for SmallIntMap<V> {
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#[inline]
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fn partial_cmp(&self, other: &SmallIntMap<V>) -> Option<Ordering> {
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iter::order::partial_cmp(self.iter(), other.iter())
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}
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}
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impl<V: Ord> Ord for SmallIntMap<V> {
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#[inline]
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fn cmp(&self, other: &SmallIntMap<V>) -> Ordering {
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iter::order::cmp(self.iter(), other.iter())
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}
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}
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impl<V: fmt::Show> fmt::Show for SmallIntMap<V> {
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fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
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try!(write!(f, "{{"));
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for (i, (k, v)) in self.iter().enumerate() {
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if i != 0 { try!(write!(f, ", ")); }
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try!(write!(f, "{}: {}", k, *v));
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}
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write!(f, "}}")
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}
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}
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impl<V> FromIterator<(uint, V)> for SmallIntMap<V> {
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fn from_iter<Iter: Iterator<(uint, V)>>(iter: Iter) -> SmallIntMap<V> {
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let mut map = SmallIntMap::new();
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map.extend(iter);
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map
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}
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}
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impl<V> Extendable<(uint, V)> for SmallIntMap<V> {
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fn extend<Iter: Iterator<(uint, V)>>(&mut self, mut iter: Iter) {
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for (k, v) in iter {
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self.insert(k, v);
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}
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}
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}
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impl<V> Index<uint, V> for SmallIntMap<V> {
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#[inline]
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#[allow(deprecated)]
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fn index<'a>(&'a self, i: &uint) -> &'a V {
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self.get(i)
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}
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}
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// FIXME(#12825) Indexing will always try IndexMut first and that causes issues.
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/*impl<V> IndexMut<uint, V> for SmallIntMap<V> {
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#[inline]
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fn index_mut<'a>(&'a mut self, i: &uint) -> &'a mut V {
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self.find_mut(i).expect("key not present")
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}
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}*/
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macro_rules! iterator {
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(impl $name:ident -> $elem:ty, $($getter:ident),+) => {
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impl<'a, T> Iterator<$elem> for $name<'a, T> {
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#[inline]
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fn next(&mut self) -> Option<$elem> {
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while self.front < self.back {
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match self.iter.next() {
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Some(elem) => {
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if elem.is_some() {
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let index = self.front;
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self.front += 1;
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return Some((index, elem $(. $getter ())+));
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}
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}
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_ => ()
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}
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self.front += 1;
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}
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None
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}
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#[inline]
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fn size_hint(&self) -> (uint, Option<uint>) {
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(0, Some(self.back - self.front))
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}
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}
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}
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}
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macro_rules! double_ended_iterator {
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(impl $name:ident -> $elem:ty, $($getter:ident),+) => {
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impl<'a, T> DoubleEndedIterator<$elem> for $name<'a, T> {
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#[inline]
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fn next_back(&mut self) -> Option<$elem> {
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while self.front < self.back {
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match self.iter.next_back() {
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Some(elem) => {
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if elem.is_some() {
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self.back -= 1;
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return Some((self.back, elem$(. $getter ())+));
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}
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}
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_ => ()
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}
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self.back -= 1;
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}
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None
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}
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}
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}
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}
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|
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/// Forward iterator over a map.
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pub struct Entries<'a, T:'a> {
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front: uint,
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back: uint,
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iter: slice::Items<'a, Option<T>>
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}
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iterator!(impl Entries -> (uint, &'a T), as_ref, unwrap)
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double_ended_iterator!(impl Entries -> (uint, &'a T), as_ref, unwrap)
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|
|
/// Forward iterator over the key-value pairs of a map, with the
|
|
/// values being mutable.
|
|
pub struct MutEntries<'a, T:'a> {
|
|
front: uint,
|
|
back: uint,
|
|
iter: slice::MutItems<'a, Option<T>>
|
|
}
|
|
|
|
iterator!(impl MutEntries -> (uint, &'a mut T), as_mut, unwrap)
|
|
double_ended_iterator!(impl MutEntries -> (uint, &'a mut T), as_mut, unwrap)
|
|
|
|
/// Forward iterator over the keys of a map
|
|
pub type Keys<'a, T> =
|
|
iter::Map<'static, (uint, &'a T), uint, Entries<'a, T>>;
|
|
|
|
/// Forward iterator over the values of a map
|
|
pub type Values<'a, T> =
|
|
iter::Map<'static, (uint, &'a T), &'a T, Entries<'a, T>>;
|
|
|
|
#[cfg(test)]
|
|
mod test_map {
|
|
use std::prelude::*;
|
|
use vec::Vec;
|
|
use hash;
|
|
|
|
use {Map, MutableMap, Mutable, MutableSeq};
|
|
use super::SmallIntMap;
|
|
|
|
#[test]
|
|
fn test_find_mut() {
|
|
let mut m = SmallIntMap::new();
|
|
assert!(m.insert(1, 12i));
|
|
assert!(m.insert(2, 8));
|
|
assert!(m.insert(5, 14));
|
|
let new = 100;
|
|
match m.find_mut(&5) {
|
|
None => fail!(), Some(x) => *x = new
|
|
}
|
|
assert_eq!(m.find(&5), Some(&new));
|
|
}
|
|
|
|
#[test]
|
|
fn test_len() {
|
|
let mut map = SmallIntMap::new();
|
|
assert_eq!(map.len(), 0);
|
|
assert!(map.is_empty());
|
|
assert!(map.insert(5, 20i));
|
|
assert_eq!(map.len(), 1);
|
|
assert!(!map.is_empty());
|
|
assert!(map.insert(11, 12));
|
|
assert_eq!(map.len(), 2);
|
|
assert!(!map.is_empty());
|
|
assert!(map.insert(14, 22));
|
|
assert_eq!(map.len(), 3);
|
|
assert!(!map.is_empty());
|
|
}
|
|
|
|
#[test]
|
|
fn test_clear() {
|
|
let mut map = SmallIntMap::new();
|
|
assert!(map.insert(5, 20i));
|
|
assert!(map.insert(11, 12));
|
|
assert!(map.insert(14, 22));
|
|
map.clear();
|
|
assert!(map.is_empty());
|
|
assert!(map.find(&5).is_none());
|
|
assert!(map.find(&11).is_none());
|
|
assert!(map.find(&14).is_none());
|
|
}
|
|
|
|
#[test]
|
|
fn test_insert_with_key() {
|
|
let mut map = SmallIntMap::new();
|
|
|
|
// given a new key, initialize it with this new count,
|
|
// given an existing key, add more to its count
|
|
fn add_more_to_count(_k: uint, v0: uint, v1: uint) -> uint {
|
|
v0 + v1
|
|
}
|
|
|
|
fn add_more_to_count_simple(v0: uint, v1: uint) -> uint {
|
|
v0 + v1
|
|
}
|
|
|
|
// count integers
|
|
map.update(3, 1, add_more_to_count_simple);
|
|
map.update_with_key(9, 1, add_more_to_count);
|
|
map.update(3, 7, add_more_to_count_simple);
|
|
map.update_with_key(5, 3, add_more_to_count);
|
|
map.update_with_key(3, 2, add_more_to_count);
|
|
|
|
// check the total counts
|
|
assert_eq!(map.find(&3).unwrap(), &10);
|
|
assert_eq!(map.find(&5).unwrap(), &3);
|
|
assert_eq!(map.find(&9).unwrap(), &1);
|
|
|
|
// sadly, no sevens were counted
|
|
assert!(map.find(&7).is_none());
|
|
}
|
|
|
|
#[test]
|
|
fn test_swap() {
|
|
let mut m = SmallIntMap::new();
|
|
assert_eq!(m.swap(1, 2i), None);
|
|
assert_eq!(m.swap(1, 3i), Some(2));
|
|
assert_eq!(m.swap(1, 4i), Some(3));
|
|
}
|
|
|
|
#[test]
|
|
fn test_pop() {
|
|
let mut m = SmallIntMap::new();
|
|
m.insert(1, 2i);
|
|
assert_eq!(m.pop(&1), Some(2));
|
|
assert_eq!(m.pop(&1), None);
|
|
}
|
|
|
|
#[test]
|
|
fn test_keys() {
|
|
let mut map = SmallIntMap::new();
|
|
map.insert(1, 'a');
|
|
map.insert(2, 'b');
|
|
map.insert(3, 'c');
|
|
let keys = map.keys().collect::<Vec<uint>>();
|
|
assert_eq!(keys.len(), 3);
|
|
assert!(keys.contains(&1));
|
|
assert!(keys.contains(&2));
|
|
assert!(keys.contains(&3));
|
|
}
|
|
|
|
#[test]
|
|
fn test_values() {
|
|
let mut map = SmallIntMap::new();
|
|
map.insert(1, 'a');
|
|
map.insert(2, 'b');
|
|
map.insert(3, 'c');
|
|
let values = map.values().map(|&v| v).collect::<Vec<char>>();
|
|
assert_eq!(values.len(), 3);
|
|
assert!(values.contains(&'a'));
|
|
assert!(values.contains(&'b'));
|
|
assert!(values.contains(&'c'));
|
|
}
|
|
|
|
#[test]
|
|
fn test_iterator() {
|
|
let mut m = SmallIntMap::new();
|
|
|
|
assert!(m.insert(0, 1i));
|
|
assert!(m.insert(1, 2));
|
|
assert!(m.insert(3, 5));
|
|
assert!(m.insert(6, 10));
|
|
assert!(m.insert(10, 11));
|
|
|
|
let mut it = m.iter();
|
|
assert_eq!(it.size_hint(), (0, Some(11)));
|
|
assert_eq!(it.next().unwrap(), (0, &1));
|
|
assert_eq!(it.size_hint(), (0, Some(10)));
|
|
assert_eq!(it.next().unwrap(), (1, &2));
|
|
assert_eq!(it.size_hint(), (0, Some(9)));
|
|
assert_eq!(it.next().unwrap(), (3, &5));
|
|
assert_eq!(it.size_hint(), (0, Some(7)));
|
|
assert_eq!(it.next().unwrap(), (6, &10));
|
|
assert_eq!(it.size_hint(), (0, Some(4)));
|
|
assert_eq!(it.next().unwrap(), (10, &11));
|
|
assert_eq!(it.size_hint(), (0, Some(0)));
|
|
assert!(it.next().is_none());
|
|
}
|
|
|
|
#[test]
|
|
fn test_iterator_size_hints() {
|
|
let mut m = SmallIntMap::new();
|
|
|
|
assert!(m.insert(0, 1i));
|
|
assert!(m.insert(1, 2));
|
|
assert!(m.insert(3, 5));
|
|
assert!(m.insert(6, 10));
|
|
assert!(m.insert(10, 11));
|
|
|
|
assert_eq!(m.iter().size_hint(), (0, Some(11)));
|
|
assert_eq!(m.iter().rev().size_hint(), (0, Some(11)));
|
|
assert_eq!(m.iter_mut().size_hint(), (0, Some(11)));
|
|
assert_eq!(m.iter_mut().rev().size_hint(), (0, Some(11)));
|
|
}
|
|
|
|
#[test]
|
|
fn test_mut_iterator() {
|
|
let mut m = SmallIntMap::new();
|
|
|
|
assert!(m.insert(0, 1i));
|
|
assert!(m.insert(1, 2));
|
|
assert!(m.insert(3, 5));
|
|
assert!(m.insert(6, 10));
|
|
assert!(m.insert(10, 11));
|
|
|
|
for (k, v) in m.iter_mut() {
|
|
*v += k as int;
|
|
}
|
|
|
|
let mut it = m.iter();
|
|
assert_eq!(it.next().unwrap(), (0, &1));
|
|
assert_eq!(it.next().unwrap(), (1, &3));
|
|
assert_eq!(it.next().unwrap(), (3, &8));
|
|
assert_eq!(it.next().unwrap(), (6, &16));
|
|
assert_eq!(it.next().unwrap(), (10, &21));
|
|
assert!(it.next().is_none());
|
|
}
|
|
|
|
#[test]
|
|
fn test_rev_iterator() {
|
|
let mut m = SmallIntMap::new();
|
|
|
|
assert!(m.insert(0, 1i));
|
|
assert!(m.insert(1, 2));
|
|
assert!(m.insert(3, 5));
|
|
assert!(m.insert(6, 10));
|
|
assert!(m.insert(10, 11));
|
|
|
|
let mut it = m.iter().rev();
|
|
assert_eq!(it.next().unwrap(), (10, &11));
|
|
assert_eq!(it.next().unwrap(), (6, &10));
|
|
assert_eq!(it.next().unwrap(), (3, &5));
|
|
assert_eq!(it.next().unwrap(), (1, &2));
|
|
assert_eq!(it.next().unwrap(), (0, &1));
|
|
assert!(it.next().is_none());
|
|
}
|
|
|
|
#[test]
|
|
fn test_mut_rev_iterator() {
|
|
let mut m = SmallIntMap::new();
|
|
|
|
assert!(m.insert(0, 1i));
|
|
assert!(m.insert(1, 2));
|
|
assert!(m.insert(3, 5));
|
|
assert!(m.insert(6, 10));
|
|
assert!(m.insert(10, 11));
|
|
|
|
for (k, v) in m.iter_mut().rev() {
|
|
*v += k as int;
|
|
}
|
|
|
|
let mut it = m.iter();
|
|
assert_eq!(it.next().unwrap(), (0, &1));
|
|
assert_eq!(it.next().unwrap(), (1, &3));
|
|
assert_eq!(it.next().unwrap(), (3, &8));
|
|
assert_eq!(it.next().unwrap(), (6, &16));
|
|
assert_eq!(it.next().unwrap(), (10, &21));
|
|
assert!(it.next().is_none());
|
|
}
|
|
|
|
#[test]
|
|
fn test_move_iter() {
|
|
let mut m = SmallIntMap::new();
|
|
m.insert(1, box 2i);
|
|
let mut called = false;
|
|
for (k, v) in m.into_iter() {
|
|
assert!(!called);
|
|
called = true;
|
|
assert_eq!(k, 1);
|
|
assert_eq!(v, box 2i);
|
|
}
|
|
assert!(called);
|
|
m.insert(2, box 1i);
|
|
}
|
|
|
|
#[test]
|
|
fn test_show() {
|
|
let mut map = SmallIntMap::new();
|
|
let empty = SmallIntMap::<int>::new();
|
|
|
|
map.insert(1, 2i);
|
|
map.insert(3, 4i);
|
|
|
|
let map_str = map.to_string();
|
|
let map_str = map_str.as_slice();
|
|
assert!(map_str == "{1: 2, 3: 4}" || map_str == "{3: 4, 1: 2}");
|
|
assert_eq!(format!("{}", empty), "{}".to_string());
|
|
}
|
|
|
|
#[test]
|
|
fn test_clone() {
|
|
let mut a = SmallIntMap::new();
|
|
|
|
a.insert(1, 'x');
|
|
a.insert(4, 'y');
|
|
a.insert(6, 'z');
|
|
|
|
assert!(a.clone() == a);
|
|
}
|
|
|
|
#[test]
|
|
fn test_eq() {
|
|
let mut a = SmallIntMap::new();
|
|
let mut b = SmallIntMap::new();
|
|
|
|
assert!(a == b);
|
|
assert!(a.insert(0, 5i));
|
|
assert!(a != b);
|
|
assert!(b.insert(0, 4i));
|
|
assert!(a != b);
|
|
assert!(a.insert(5, 19));
|
|
assert!(a != b);
|
|
assert!(!b.insert(0, 5));
|
|
assert!(a != b);
|
|
assert!(b.insert(5, 19));
|
|
assert!(a == b);
|
|
}
|
|
|
|
#[test]
|
|
fn test_lt() {
|
|
let mut a = SmallIntMap::new();
|
|
let mut b = SmallIntMap::new();
|
|
|
|
assert!(!(a < b) && !(b < a));
|
|
assert!(b.insert(2u, 5i));
|
|
assert!(a < b);
|
|
assert!(a.insert(2, 7));
|
|
assert!(!(a < b) && b < a);
|
|
assert!(b.insert(1, 0));
|
|
assert!(b < a);
|
|
assert!(a.insert(0, 6));
|
|
assert!(a < b);
|
|
assert!(a.insert(6, 2));
|
|
assert!(a < b && !(b < a));
|
|
}
|
|
|
|
#[test]
|
|
fn test_ord() {
|
|
let mut a = SmallIntMap::new();
|
|
let mut b = SmallIntMap::new();
|
|
|
|
assert!(a <= b && a >= b);
|
|
assert!(a.insert(1u, 1i));
|
|
assert!(a > b && a >= b);
|
|
assert!(b < a && b <= a);
|
|
assert!(b.insert(2, 2));
|
|
assert!(b > a && b >= a);
|
|
assert!(a < b && a <= b);
|
|
}
|
|
|
|
#[test]
|
|
fn test_hash() {
|
|
let mut x = SmallIntMap::new();
|
|
let mut y = SmallIntMap::new();
|
|
|
|
assert!(hash::hash(&x) == hash::hash(&y));
|
|
x.insert(1, 'a');
|
|
x.insert(2, 'b');
|
|
x.insert(3, 'c');
|
|
|
|
y.insert(3, 'c');
|
|
y.insert(2, 'b');
|
|
y.insert(1, 'a');
|
|
|
|
assert!(hash::hash(&x) == hash::hash(&y));
|
|
}
|
|
|
|
#[test]
|
|
fn test_from_iter() {
|
|
let xs: Vec<(uint, char)> = vec![(1u, 'a'), (2, 'b'), (3, 'c'), (4, 'd'), (5, 'e')];
|
|
|
|
let map: SmallIntMap<char> = xs.iter().map(|&x| x).collect();
|
|
|
|
for &(k, v) in xs.iter() {
|
|
assert_eq!(map.find(&k), Some(&v));
|
|
}
|
|
}
|
|
|
|
#[test]
|
|
fn test_index() {
|
|
let mut map: SmallIntMap<int> = SmallIntMap::new();
|
|
|
|
map.insert(1, 2);
|
|
map.insert(2, 1);
|
|
map.insert(3, 4);
|
|
|
|
assert_eq!(map[3], 4);
|
|
}
|
|
|
|
#[test]
|
|
#[should_fail]
|
|
fn test_index_nonexistent() {
|
|
let mut map: SmallIntMap<int> = SmallIntMap::new();
|
|
|
|
map.insert(1, 2);
|
|
map.insert(2, 1);
|
|
map.insert(3, 4);
|
|
|
|
map[4];
|
|
}
|
|
}
|
|
|
|
#[cfg(test)]
|
|
mod bench {
|
|
extern crate test;
|
|
use self::test::Bencher;
|
|
use super::SmallIntMap;
|
|
use deque::bench::{insert_rand_n, insert_seq_n, find_rand_n, find_seq_n};
|
|
|
|
// Find seq
|
|
#[bench]
|
|
pub fn insert_rand_100(b: &mut Bencher) {
|
|
let mut m : SmallIntMap<uint> = SmallIntMap::new();
|
|
insert_rand_n(100, &mut m, b);
|
|
}
|
|
|
|
#[bench]
|
|
pub fn insert_rand_10_000(b: &mut Bencher) {
|
|
let mut m : SmallIntMap<uint> = SmallIntMap::new();
|
|
insert_rand_n(10_000, &mut m, b);
|
|
}
|
|
|
|
// Insert seq
|
|
#[bench]
|
|
pub fn insert_seq_100(b: &mut Bencher) {
|
|
let mut m : SmallIntMap<uint> = SmallIntMap::new();
|
|
insert_seq_n(100, &mut m, b);
|
|
}
|
|
|
|
#[bench]
|
|
pub fn insert_seq_10_000(b: &mut Bencher) {
|
|
let mut m : SmallIntMap<uint> = SmallIntMap::new();
|
|
insert_seq_n(10_000, &mut m, b);
|
|
}
|
|
|
|
// Find rand
|
|
#[bench]
|
|
pub fn find_rand_100(b: &mut Bencher) {
|
|
let mut m : SmallIntMap<uint> = SmallIntMap::new();
|
|
find_rand_n(100, &mut m, b);
|
|
}
|
|
|
|
#[bench]
|
|
pub fn find_rand_10_000(b: &mut Bencher) {
|
|
let mut m : SmallIntMap<uint> = SmallIntMap::new();
|
|
find_rand_n(10_000, &mut m, b);
|
|
}
|
|
|
|
// Find seq
|
|
#[bench]
|
|
pub fn find_seq_100(b: &mut Bencher) {
|
|
let mut m : SmallIntMap<uint> = SmallIntMap::new();
|
|
find_seq_n(100, &mut m, b);
|
|
}
|
|
|
|
#[bench]
|
|
pub fn find_seq_10_000(b: &mut Bencher) {
|
|
let mut m : SmallIntMap<uint> = SmallIntMap::new();
|
|
find_seq_n(10_000, &mut m, b);
|
|
}
|
|
}
|