| <!DOCTYPE html><html lang="en"><head><meta charset="utf-8"><meta name="viewport" content="width=device-width, initial-scale=1.0"><meta name="generator" content="rustdoc"><meta name="description" content="Source of the Rust file `/root/.cargo/registry/src/github.com-1ecc6299db9ec823/vec_map-0.8.2/src/lib.rs`."><meta name="keywords" content="rust, rustlang, rust-lang"><title>lib.rs - source</title><link rel="preload" as="font" type="font/woff2" crossorigin href="../../SourceSerif4-Regular.ttf.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../FiraSans-Regular.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../FiraSans-Medium.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../SourceCodePro-Regular.ttf.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../SourceSerif4-Bold.ttf.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../SourceCodePro-Semibold.ttf.woff2"><link rel="stylesheet" href="../../normalize.css"><link rel="stylesheet" href="../../rustdoc.css" id="mainThemeStyle"><link rel="stylesheet" href="../../ayu.css" disabled><link rel="stylesheet" href="../../dark.css" disabled><link rel="stylesheet" href="../../light.css" id="themeStyle"><script id="default-settings" ></script><script src="../../storage.js"></script><script defer src="../../source-script.js"></script><script defer src="../../source-files.js"></script><script defer src="../../main.js"></script><noscript><link rel="stylesheet" href="../../noscript.css"></noscript><link rel="alternate icon" type="image/png" href="../../favicon-16x16.png"><link rel="alternate icon" type="image/png" href="../../favicon-32x32.png"><link rel="icon" type="image/svg+xml" href="../../favicon.svg"></head><body class="rustdoc source"><!--[if lte IE 11]><div class="warning">This old browser is unsupported and will most likely display funky things.</div><![endif]--><nav class="sidebar"><a class="sidebar-logo" href="../../vec_map/index.html"><div class="logo-container"><img class="rust-logo" src="../../rust-logo.svg" alt="logo"></div></a></nav><main><div class="width-limiter"><nav class="sub"><a class="sub-logo-container" href="../../vec_map/index.html"><img class="rust-logo" src="../../rust-logo.svg" alt="logo"></a><form class="search-form"><div class="search-container"><span></span><input class="search-input" name="search" autocomplete="off" spellcheck="false" placeholder="Click or press ‘S’ to search, ‘?’ for more options…" type="search"><div id="help-button" title="help" tabindex="-1"><a href="../../help.html">?</a></div><div id="settings-menu" tabindex="-1"><a href="../../settings.html" title="settings"><img width="22" height="22" alt="Change settings" src="../../wheel.svg"></a></div></div></form></nav><section id="main-content" class="content"><div class="example-wrap"><pre class="src-line-numbers"><span id="1">1</span> |
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| <span id="1590">1590</span> |
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| <span id="1592">1592</span> |
| <span id="1593">1593</span> |
| <span id="1594">1594</span> |
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| <span id="1596">1596</span> |
| <span id="1597">1597</span> |
| <span id="1598">1598</span> |
| <span id="1599">1599</span> |
| <span id="1600">1600</span> |
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| <span id="1602">1602</span> |
| <span id="1603">1603</span> |
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| <span id="1621">1621</span> |
| <span id="1622">1622</span> |
| <span id="1623">1623</span> |
| </pre><pre class="rust"><code><span class="comment">// Copyright 2012-2018 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. |
| |
| </span><span class="attribute">#![deny(missing_docs)] |
| |
| </span><span class="doccomment">//! A simple map based on a vector for small integer keys. Space requirements |
| //! are O(highest integer key). |
| |
| </span><span class="comment">// optional serde support |
| </span><span class="attribute">#[cfg(feature = <span class="string">"serde"</span>)] |
| #[macro_use] |
| </span><span class="kw">extern crate </span>serde; |
| |
| <span class="kw">use </span><span class="self">self</span>::Entry::<span class="kw-2">*</span>; |
| |
| <span class="kw">use </span>std::cmp::{Ordering, max}; |
| <span class="kw">use </span>std::fmt; |
| <span class="kw">use </span>std::hash::{Hash, Hasher}; |
| <span class="kw">use </span>std::iter::{Enumerate, FilterMap, FromIterator}; |
| <span class="kw">use </span>std::mem::{replace, swap}; |
| <span class="kw">use </span>std::ops::{Index, IndexMut}; |
| <span class="kw">use </span>std::slice; |
| <span class="kw">use </span>std::vec; |
| |
| <span class="doccomment">/// A map optimized for small integer keys. |
| /// |
| /// # Examples |
| /// |
| /// ``` |
| /// use vec_map::VecMap; |
| /// |
| /// let mut months = VecMap::new(); |
| /// months.insert(1, "Jan"); |
| /// months.insert(2, "Feb"); |
| /// months.insert(3, "Mar"); |
| /// |
| /// if !months.contains_key(12) { |
| /// println!("The end is near!"); |
| /// } |
| /// |
| /// assert_eq!(months.get(1), Some(&"Jan")); |
| /// |
| /// if let Some(value) = months.get_mut(3) { |
| /// *value = "Venus"; |
| /// } |
| /// |
| /// assert_eq!(months.get(3), Some(&"Venus")); |
| /// |
| /// // Print out all months |
| /// for (key, value) in &months { |
| /// println!("month {} is {}", key, value); |
| /// } |
| /// |
| /// months.clear(); |
| /// assert!(months.is_empty()); |
| /// ``` |
| </span><span class="attribute">#[cfg_attr(feature = <span class="string">"serde"</span>, derive(Serialize, Deserialize))] |
| </span><span class="kw">pub struct </span>VecMap<V> { |
| n: usize, |
| v: Vec<<span class="prelude-ty">Option</span><V>>, |
| } |
| |
| <span class="doccomment">/// A view into a single entry in a map, which may either be vacant or occupied. |
| </span><span class="kw">pub enum </span>Entry<<span class="lifetime">'a</span>, V: <span class="lifetime">'a</span>> { |
| <span class="doccomment">/// A vacant Entry |
| </span>Vacant(VacantEntry<<span class="lifetime">'a</span>, V>), |
| |
| <span class="doccomment">/// An occupied Entry |
| </span>Occupied(OccupiedEntry<<span class="lifetime">'a</span>, V>), |
| } |
| |
| <span class="doccomment">/// A vacant Entry. |
| </span><span class="kw">pub struct </span>VacantEntry<<span class="lifetime">'a</span>, V: <span class="lifetime">'a</span>> { |
| map: <span class="kw-2">&</span><span class="lifetime">'a </span><span class="kw-2">mut </span>VecMap<V>, |
| index: usize, |
| } |
| |
| <span class="doccomment">/// An occupied Entry. |
| </span><span class="kw">pub struct </span>OccupiedEntry<<span class="lifetime">'a</span>, V: <span class="lifetime">'a</span>> { |
| map: <span class="kw-2">&</span><span class="lifetime">'a </span><span class="kw-2">mut </span>VecMap<V>, |
| index: usize, |
| } |
| |
| <span class="kw">impl</span><V> Default <span class="kw">for </span>VecMap<V> { |
| <span class="attribute">#[inline] |
| </span><span class="kw">fn </span>default() -> <span class="self">Self </span>{ <span class="self">Self</span>::new() } |
| } |
| |
| <span class="kw">impl</span><V: Hash> Hash <span class="kw">for </span>VecMap<V> { |
| <span class="kw">fn </span>hash<H: Hasher>(<span class="kw-2">&</span><span class="self">self</span>, state: <span class="kw-2">&mut </span>H) { |
| <span class="comment">// In order to not traverse the `VecMap` twice, count the elements |
| // during iteration. |
| </span><span class="kw">let </span><span class="kw-2">mut </span>count: usize = <span class="number">0</span>; |
| <span class="kw">for </span>elt <span class="kw">in </span><span class="self">self </span>{ |
| elt.hash(state); |
| count += <span class="number">1</span>; |
| } |
| count.hash(state); |
| } |
| } |
| |
| <span class="kw">impl</span><V> VecMap<V> { |
| <span class="doccomment">/// Creates an empty `VecMap`. |
| /// |
| /// # Examples |
| /// |
| /// ``` |
| /// use vec_map::VecMap; |
| /// let mut map: VecMap<&str> = VecMap::new(); |
| /// ``` |
| </span><span class="kw">pub fn </span>new() -> <span class="self">Self </span>{ VecMap { n: <span class="number">0</span>, v: <span class="macro">vec!</span>[] } } |
| |
| <span class="doccomment">/// Creates an empty `VecMap` with space for at least `capacity` |
| /// elements before resizing. |
| /// |
| /// # Examples |
| /// |
| /// ``` |
| /// use vec_map::VecMap; |
| /// let mut map: VecMap<&str> = VecMap::with_capacity(10); |
| /// ``` |
| </span><span class="kw">pub fn </span>with_capacity(capacity: usize) -> <span class="self">Self </span>{ |
| VecMap { n: <span class="number">0</span>, v: Vec::with_capacity(capacity) } |
| } |
| |
| <span class="doccomment">/// Returns the number of elements the `VecMap` can hold without |
| /// reallocating. |
| /// |
| /// # Examples |
| /// |
| /// ``` |
| /// use vec_map::VecMap; |
| /// let map: VecMap<String> = VecMap::with_capacity(10); |
| /// assert!(map.capacity() >= 10); |
| /// ``` |
| </span><span class="attribute">#[inline] |
| </span><span class="kw">pub fn </span>capacity(<span class="kw-2">&</span><span class="self">self</span>) -> usize { |
| <span class="self">self</span>.v.capacity() |
| } |
| |
| <span class="doccomment">/// Reserves capacity for the given `VecMap` to contain `len` distinct keys. |
| /// In the case of `VecMap` this means reallocations will not occur as long |
| /// as all inserted keys are less than `len`. |
| /// |
| /// The collection may reserve more space to avoid frequent reallocations. |
| /// |
| /// # Examples |
| /// |
| /// ``` |
| /// use vec_map::VecMap; |
| /// let mut map: VecMap<&str> = VecMap::new(); |
| /// map.reserve_len(10); |
| /// assert!(map.capacity() >= 10); |
| /// ``` |
| </span><span class="kw">pub fn </span>reserve_len(<span class="kw-2">&mut </span><span class="self">self</span>, len: usize) { |
| <span class="kw">let </span>cur_len = <span class="self">self</span>.v.len(); |
| <span class="kw">if </span>len >= cur_len { |
| <span class="self">self</span>.v.reserve(len - cur_len); |
| } |
| } |
| |
| <span class="doccomment">/// Reserves the minimum capacity for the given `VecMap` to contain `len` distinct keys. |
| /// In the case of `VecMap` this means reallocations will not occur as long as all inserted |
| /// keys are less than `len`. |
| /// |
| /// Note that the allocator may give the collection more space than it requests. |
| /// Therefore capacity cannot be relied upon to be precisely minimal. Prefer |
| /// `reserve_len` if future insertions are expected. |
| /// |
| /// # Examples |
| /// |
| /// ``` |
| /// use vec_map::VecMap; |
| /// let mut map: VecMap<&str> = VecMap::new(); |
| /// map.reserve_len_exact(10); |
| /// assert!(map.capacity() >= 10); |
| /// ``` |
| </span><span class="kw">pub fn </span>reserve_len_exact(<span class="kw-2">&mut </span><span class="self">self</span>, len: usize) { |
| <span class="kw">let </span>cur_len = <span class="self">self</span>.v.len(); |
| <span class="kw">if </span>len >= cur_len { |
| <span class="self">self</span>.v.reserve_exact(len - cur_len); |
| } |
| } |
| |
| <span class="doccomment">/// Trims the `VecMap` of any excess capacity. |
| /// |
| /// The collection may reserve more space to avoid frequent reallocations. |
| /// |
| /// # Examples |
| /// |
| /// ``` |
| /// use vec_map::VecMap; |
| /// let mut map: VecMap<&str> = VecMap::with_capacity(10); |
| /// map.shrink_to_fit(); |
| /// assert_eq!(map.capacity(), 0); |
| /// ``` |
| </span><span class="kw">pub fn </span>shrink_to_fit(<span class="kw-2">&mut </span><span class="self">self</span>) { |
| <span class="comment">// strip off trailing `None`s |
| </span><span class="kw">if let </span><span class="prelude-val">Some</span>(idx) = <span class="self">self</span>.v.iter().rposition(Option::is_some) { |
| <span class="self">self</span>.v.truncate(idx + <span class="number">1</span>); |
| } <span class="kw">else </span>{ |
| <span class="self">self</span>.v.clear(); |
| } |
| |
| <span class="self">self</span>.v.shrink_to_fit() |
| } |
| |
| <span class="doccomment">/// Returns an iterator visiting all keys in ascending order of the keys. |
| /// The iterator's element type is `usize`. |
| </span><span class="kw">pub fn </span>keys(<span class="kw-2">&</span><span class="self">self</span>) -> Keys<V> { |
| Keys { iter: <span class="self">self</span>.iter() } |
| } |
| |
| <span class="doccomment">/// Returns an iterator visiting all values in ascending order of the keys. |
| /// The iterator's element type is `&'r V`. |
| </span><span class="kw">pub fn </span>values(<span class="kw-2">&</span><span class="self">self</span>) -> Values<V> { |
| Values { iter: <span class="self">self</span>.iter() } |
| } |
| |
| <span class="doccomment">/// Returns an iterator visiting all values in ascending order of the keys. |
| /// The iterator's element type is `&'r mut V`. |
| </span><span class="kw">pub fn </span>values_mut(<span class="kw-2">&mut </span><span class="self">self</span>) -> ValuesMut<V> { |
| ValuesMut { iter_mut: <span class="self">self</span>.iter_mut() } |
| } |
| |
| <span class="doccomment">/// Returns an iterator visiting all key-value pairs in ascending order of the keys. |
| /// The iterator's element type is `(usize, &'r V)`. |
| /// |
| /// # Examples |
| /// |
| /// ``` |
| /// use vec_map::VecMap; |
| /// |
| /// let mut map = VecMap::new(); |
| /// map.insert(1, "a"); |
| /// map.insert(3, "c"); |
| /// map.insert(2, "b"); |
| /// |
| /// // Print `1: a` then `2: b` then `3: c` |
| /// for (key, value) in map.iter() { |
| /// println!("{}: {}", key, value); |
| /// } |
| /// ``` |
| </span><span class="kw">pub fn </span>iter(<span class="kw-2">&</span><span class="self">self</span>) -> Iter<V> { |
| Iter { |
| front: <span class="number">0</span>, |
| back: <span class="self">self</span>.v.len(), |
| n: <span class="self">self</span>.n, |
| yielded: <span class="number">0</span>, |
| iter: <span class="self">self</span>.v.iter() |
| } |
| } |
| |
| <span class="doccomment">/// Returns an iterator visiting all key-value pairs in ascending order of the keys, |
| /// with mutable references to the values. |
| /// The iterator's element type is `(usize, &'r mut V)`. |
| /// |
| /// # Examples |
| /// |
| /// ``` |
| /// use vec_map::VecMap; |
| /// |
| /// let mut map = VecMap::new(); |
| /// map.insert(1, "a"); |
| /// map.insert(2, "b"); |
| /// map.insert(3, "c"); |
| /// |
| /// for (key, value) in map.iter_mut() { |
| /// *value = "x"; |
| /// } |
| /// |
| /// for (key, value) in &map { |
| /// assert_eq!(value, &"x"); |
| /// } |
| /// ``` |
| </span><span class="kw">pub fn </span>iter_mut(<span class="kw-2">&mut </span><span class="self">self</span>) -> IterMut<V> { |
| IterMut { |
| front: <span class="number">0</span>, |
| back: <span class="self">self</span>.v.len(), |
| n: <span class="self">self</span>.n, |
| yielded: <span class="number">0</span>, |
| iter: <span class="self">self</span>.v.iter_mut() |
| } |
| } |
| |
| <span class="doccomment">/// Moves all elements from `other` into the map while overwriting existing keys. |
| /// |
| /// # Examples |
| /// |
| /// ``` |
| /// use vec_map::VecMap; |
| /// |
| /// let mut a = VecMap::new(); |
| /// a.insert(1, "a"); |
| /// a.insert(2, "b"); |
| /// |
| /// let mut b = VecMap::new(); |
| /// b.insert(3, "c"); |
| /// b.insert(4, "d"); |
| /// |
| /// a.append(&mut b); |
| /// |
| /// assert_eq!(a.len(), 4); |
| /// assert_eq!(b.len(), 0); |
| /// assert_eq!(a[1], "a"); |
| /// assert_eq!(a[2], "b"); |
| /// assert_eq!(a[3], "c"); |
| /// assert_eq!(a[4], "d"); |
| /// ``` |
| </span><span class="kw">pub fn </span>append(<span class="kw-2">&mut </span><span class="self">self</span>, other: <span class="kw-2">&mut </span><span class="self">Self</span>) { |
| <span class="self">self</span>.extend(other.drain()); |
| } |
| |
| <span class="doccomment">/// Splits the collection into two at the given key. |
| /// |
| /// Returns a newly allocated `Self`. `self` contains elements `[0, at)`, |
| /// and the returned `Self` contains elements `[at, max_key)`. |
| /// |
| /// Note that the capacity of `self` does not change. |
| /// |
| /// # Examples |
| /// |
| /// ``` |
| /// use vec_map::VecMap; |
| /// |
| /// let mut a = VecMap::new(); |
| /// a.insert(1, "a"); |
| /// a.insert(2, "b"); |
| /// a.insert(3, "c"); |
| /// a.insert(4, "d"); |
| /// |
| /// let b = a.split_off(3); |
| /// |
| /// assert_eq!(a[1], "a"); |
| /// assert_eq!(a[2], "b"); |
| /// |
| /// assert_eq!(b[3], "c"); |
| /// assert_eq!(b[4], "d"); |
| /// ``` |
| </span><span class="kw">pub fn </span>split_off(<span class="kw-2">&mut </span><span class="self">self</span>, at: usize) -> <span class="self">Self </span>{ |
| <span class="kw">let </span><span class="kw-2">mut </span>other = VecMap::new(); |
| |
| <span class="kw">if </span>at == <span class="number">0 </span>{ |
| <span class="comment">// Move all elements to other |
| // The swap will also fix .n |
| </span>swap(<span class="self">self</span>, <span class="kw-2">&mut </span>other); |
| <span class="kw">return </span>other |
| } <span class="kw">else if </span>at >= <span class="self">self</span>.v.len() { |
| <span class="comment">// No elements to copy |
| </span><span class="kw">return </span>other; |
| } |
| |
| <span class="comment">// Look up the index of the first non-None item |
| </span><span class="kw">let </span>first_index = <span class="self">self</span>.v.iter().position(|el| el.is_some()); |
| <span class="kw">let </span>start_index = <span class="kw">match </span>first_index { |
| <span class="prelude-val">Some</span>(index) => max(at, index), |
| <span class="prelude-val">None </span>=> { |
| <span class="comment">// self has no elements |
| </span><span class="kw">return </span>other; |
| } |
| }; |
| |
| <span class="comment">// Fill the new VecMap with `None`s until `start_index` |
| </span>other.v.extend((<span class="number">0</span>..start_index).map(|<span class="kw">_</span>| <span class="prelude-val">None</span>)); |
| |
| <span class="comment">// Move elements beginning with `start_index` from `self` into `other` |
| </span><span class="kw">let </span><span class="kw-2">mut </span>taken = <span class="number">0</span>; |
| other.v.extend(<span class="self">self</span>.v[start_index..].iter_mut().map(|el| { |
| <span class="kw">let </span>el = el.take(); |
| <span class="kw">if </span>el.is_some() { |
| taken += <span class="number">1</span>; |
| } |
| el |
| })); |
| other.n = taken; |
| <span class="self">self</span>.n -= taken; |
| |
| other |
| } |
| |
| <span class="doccomment">/// Returns an iterator visiting all key-value pairs in ascending order of |
| /// the keys, emptying (but not consuming) the original `VecMap`. |
| /// The iterator's element type is `(usize, &'r V)`. Keeps the allocated memory for reuse. |
| /// |
| /// # Examples |
| /// |
| /// ``` |
| /// use vec_map::VecMap; |
| /// |
| /// let mut map = VecMap::new(); |
| /// map.insert(1, "a"); |
| /// map.insert(3, "c"); |
| /// map.insert(2, "b"); |
| /// |
| /// let vec: Vec<(usize, &str)> = map.drain().collect(); |
| /// |
| /// assert_eq!(vec, [(1, "a"), (2, "b"), (3, "c")]); |
| /// ``` |
| </span><span class="kw">pub fn </span>drain(<span class="kw-2">&mut </span><span class="self">self</span>) -> Drain<V> { |
| <span class="kw">fn </span>filter<A>((i, v): (usize, <span class="prelude-ty">Option</span><A>)) -> <span class="prelude-ty">Option</span><(usize, A)> { |
| v.map(|v| (i, v)) |
| } |
| <span class="kw">let </span>filter: <span class="kw">fn</span>((usize, <span class="prelude-ty">Option</span><V>)) -> <span class="prelude-ty">Option</span><(usize, V)> = filter; <span class="comment">// coerce to fn ptr |
| |
| </span><span class="self">self</span>.n = <span class="number">0</span>; |
| Drain { iter: <span class="self">self</span>.v.drain(..).enumerate().filter_map(filter) } |
| } |
| |
| <span class="doccomment">/// Returns the number of elements in the map. |
| /// |
| /// # Examples |
| /// |
| /// ``` |
| /// use vec_map::VecMap; |
| /// |
| /// let mut a = VecMap::new(); |
| /// assert_eq!(a.len(), 0); |
| /// a.insert(1, "a"); |
| /// assert_eq!(a.len(), 1); |
| /// ``` |
| </span><span class="kw">pub fn </span>len(<span class="kw-2">&</span><span class="self">self</span>) -> usize { |
| <span class="self">self</span>.n |
| } |
| |
| <span class="doccomment">/// Returns true if the map contains no elements. |
| /// |
| /// # Examples |
| /// |
| /// ``` |
| /// use vec_map::VecMap; |
| /// |
| /// let mut a = VecMap::new(); |
| /// assert!(a.is_empty()); |
| /// a.insert(1, "a"); |
| /// assert!(!a.is_empty()); |
| /// ``` |
| </span><span class="kw">pub fn </span>is_empty(<span class="kw-2">&</span><span class="self">self</span>) -> bool { |
| <span class="self">self</span>.n == <span class="number">0 |
| </span>} |
| |
| <span class="doccomment">/// Clears the map, removing all key-value pairs. |
| /// |
| /// # Examples |
| /// |
| /// ``` |
| /// use vec_map::VecMap; |
| /// |
| /// let mut a = VecMap::new(); |
| /// a.insert(1, "a"); |
| /// a.clear(); |
| /// assert!(a.is_empty()); |
| /// ``` |
| </span><span class="kw">pub fn </span>clear(<span class="kw-2">&mut </span><span class="self">self</span>) { <span class="self">self</span>.n = <span class="number">0</span>; <span class="self">self</span>.v.clear() } |
| |
| <span class="doccomment">/// Returns a reference to the value corresponding to the key. |
| /// |
| /// # Examples |
| /// |
| /// ``` |
| /// use vec_map::VecMap; |
| /// |
| /// let mut map = VecMap::new(); |
| /// map.insert(1, "a"); |
| /// assert_eq!(map.get(1), Some(&"a")); |
| /// assert_eq!(map.get(2), None); |
| /// ``` |
| </span><span class="kw">pub fn </span>get(<span class="kw-2">&</span><span class="self">self</span>, key: usize) -> <span class="prelude-ty">Option</span><<span class="kw-2">&</span>V> { |
| <span class="kw">if </span>key < <span class="self">self</span>.v.len() { |
| <span class="self">self</span>.v[key].as_ref() |
| } <span class="kw">else </span>{ |
| <span class="prelude-val">None |
| </span>} |
| } |
| |
| <span class="doccomment">/// Returns true if the map contains a value for the specified key. |
| /// |
| /// # Examples |
| /// |
| /// ``` |
| /// use vec_map::VecMap; |
| /// |
| /// let mut map = VecMap::new(); |
| /// map.insert(1, "a"); |
| /// assert_eq!(map.contains_key(1), true); |
| /// assert_eq!(map.contains_key(2), false); |
| /// ``` |
| </span><span class="attribute">#[inline] |
| </span><span class="kw">pub fn </span>contains_key(<span class="kw-2">&</span><span class="self">self</span>, key: usize) -> bool { |
| <span class="self">self</span>.get(key).is_some() |
| } |
| |
| <span class="doccomment">/// Returns a mutable reference to the value corresponding to the key. |
| /// |
| /// # Examples |
| /// |
| /// ``` |
| /// use vec_map::VecMap; |
| /// |
| /// let mut map = VecMap::new(); |
| /// map.insert(1, "a"); |
| /// if let Some(x) = map.get_mut(1) { |
| /// *x = "b"; |
| /// } |
| /// assert_eq!(map[1], "b"); |
| /// ``` |
| </span><span class="kw">pub fn </span>get_mut(<span class="kw-2">&mut </span><span class="self">self</span>, key: usize) -> <span class="prelude-ty">Option</span><<span class="kw-2">&mut </span>V> { |
| <span class="kw">if </span>key < <span class="self">self</span>.v.len() { |
| <span class="self">self</span>.v[key].as_mut() |
| } <span class="kw">else </span>{ |
| <span class="prelude-val">None |
| </span>} |
| } |
| |
| <span class="doccomment">/// Inserts a key-value pair into the map. If the key already had a value |
| /// present in the map, that value is returned. Otherwise, `None` is returned. |
| /// |
| /// # Examples |
| /// |
| /// ``` |
| /// use vec_map::VecMap; |
| /// |
| /// let mut map = VecMap::new(); |
| /// assert_eq!(map.insert(37, "a"), None); |
| /// assert_eq!(map.is_empty(), false); |
| /// |
| /// map.insert(37, "b"); |
| /// assert_eq!(map.insert(37, "c"), Some("b")); |
| /// assert_eq!(map[37], "c"); |
| /// ``` |
| </span><span class="kw">pub fn </span>insert(<span class="kw-2">&mut </span><span class="self">self</span>, key: usize, value: V) -> <span class="prelude-ty">Option</span><V> { |
| <span class="kw">let </span>len = <span class="self">self</span>.v.len(); |
| <span class="kw">if </span>len <= key { |
| <span class="self">self</span>.v.extend((<span class="number">0</span>..key - len + <span class="number">1</span>).map(|<span class="kw">_</span>| <span class="prelude-val">None</span>)); |
| } |
| <span class="kw">let </span>was = replace(<span class="kw-2">&mut </span><span class="self">self</span>.v[key], <span class="prelude-val">Some</span>(value)); |
| <span class="kw">if </span>was.is_none() { |
| <span class="self">self</span>.n += <span class="number">1</span>; |
| } |
| was |
| } |
| |
| <span class="doccomment">/// Removes a key from the map, returning the value at the key if the key |
| /// was previously in the map. |
| /// |
| /// # Examples |
| /// |
| /// ``` |
| /// use vec_map::VecMap; |
| /// |
| /// let mut map = VecMap::new(); |
| /// map.insert(1, "a"); |
| /// assert_eq!(map.remove(1), Some("a")); |
| /// assert_eq!(map.remove(1), None); |
| /// ``` |
| </span><span class="kw">pub fn </span>remove(<span class="kw-2">&mut </span><span class="self">self</span>, key: usize) -> <span class="prelude-ty">Option</span><V> { |
| <span class="kw">if </span>key >= <span class="self">self</span>.v.len() { |
| <span class="kw">return </span><span class="prelude-val">None</span>; |
| } |
| <span class="kw">let </span>result = <span class="kw-2">&mut </span><span class="self">self</span>.v[key]; |
| <span class="kw">let </span>was = result.take(); |
| <span class="kw">if </span>was.is_some() { |
| <span class="self">self</span>.n -= <span class="number">1</span>; |
| } |
| was |
| } |
| |
| <span class="doccomment">/// Gets the given key's corresponding entry in the map for in-place manipulation. |
| /// |
| /// # Examples |
| /// |
| /// ``` |
| /// use vec_map::VecMap; |
| /// |
| /// let mut count: VecMap<u32> = VecMap::new(); |
| /// |
| /// // count the number of occurrences of numbers in the vec |
| /// for x in vec![1, 2, 1, 2, 3, 4, 1, 2, 4] { |
| /// *count.entry(x).or_insert(0) += 1; |
| /// } |
| /// |
| /// assert_eq!(count[1], 3); |
| /// ``` |
| </span><span class="kw">pub fn </span>entry(<span class="kw-2">&mut </span><span class="self">self</span>, key: usize) -> Entry<V> { |
| <span class="comment">// FIXME(Gankro): this is basically the dumbest implementation of |
| // entry possible, because weird non-lexical borrows issues make it |
| // completely insane to do any other way. That said, Entry is a border-line |
| // useless construct on VecMap, so it's hardly a big loss. |
| </span><span class="kw">if </span><span class="self">self</span>.contains_key(key) { |
| Occupied(OccupiedEntry { |
| map: <span class="self">self</span>, |
| index: key, |
| }) |
| } <span class="kw">else </span>{ |
| Vacant(VacantEntry { |
| map: <span class="self">self</span>, |
| index: key, |
| }) |
| } |
| } |
| |
| <span class="doccomment">/// Retains only the elements specified by the predicate. |
| /// |
| /// In other words, remove all pairs `(k, v)` such that `f(&k, &mut v)` returns `false`. |
| /// |
| /// # Examples |
| /// |
| /// ``` |
| /// use vec_map::VecMap; |
| /// |
| /// let mut map: VecMap<usize> = (0..8).map(|x|(x, x*10)).collect(); |
| /// map.retain(|k, _| k % 2 == 0); |
| /// assert_eq!(map.len(), 4); |
| /// ``` |
| </span><span class="kw">pub fn </span>retain<F>(<span class="kw-2">&mut </span><span class="self">self</span>, <span class="kw-2">mut </span>f: F) |
| <span class="kw">where </span>F: FnMut(usize, <span class="kw-2">&mut </span>V) -> bool |
| { |
| <span class="kw">for </span>(i, e) <span class="kw">in </span><span class="self">self</span>.v.iter_mut().enumerate() { |
| <span class="kw">let </span>remove = <span class="kw">match </span><span class="kw-2">*</span>e { |
| <span class="prelude-val">Some</span>(<span class="kw-2">ref mut </span>value) => !f(i, value), |
| <span class="prelude-val">None </span>=> <span class="bool-val">false</span>, |
| }; |
| <span class="kw">if </span>remove { |
| <span class="kw-2">*</span>e = <span class="prelude-val">None</span>; |
| <span class="self">self</span>.n -= <span class="number">1</span>; |
| } |
| } |
| } |
| } |
| |
| <span class="kw">impl</span><<span class="lifetime">'a</span>, V> Entry<<span class="lifetime">'a</span>, V> { |
| <span class="doccomment">/// Ensures a value is in the entry by inserting the default if empty, and |
| /// returns a mutable reference to the value in the entry. |
| </span><span class="kw">pub fn </span>or_insert(<span class="self">self</span>, default: V) -> <span class="kw-2">&</span><span class="lifetime">'a </span><span class="kw-2">mut </span>V { |
| <span class="kw">match </span><span class="self">self </span>{ |
| Occupied(entry) => entry.into_mut(), |
| Vacant(entry) => entry.insert(default), |
| } |
| } |
| |
| <span class="doccomment">/// Ensures a value is in the entry by inserting the result of the default |
| /// function if empty, and returns a mutable reference to the value in the |
| /// entry. |
| </span><span class="kw">pub fn </span>or_insert_with<F: FnOnce() -> V>(<span class="self">self</span>, default: F) -> <span class="kw-2">&</span><span class="lifetime">'a </span><span class="kw-2">mut </span>V { |
| <span class="kw">match </span><span class="self">self </span>{ |
| Occupied(entry) => entry.into_mut(), |
| Vacant(entry) => entry.insert(default()), |
| } |
| } |
| } |
| |
| <span class="kw">impl</span><<span class="lifetime">'a</span>, V> VacantEntry<<span class="lifetime">'a</span>, V> { |
| <span class="doccomment">/// Sets the value of the entry with the VacantEntry's key, |
| /// and returns a mutable reference to it. |
| </span><span class="kw">pub fn </span>insert(<span class="self">self</span>, value: V) -> <span class="kw-2">&</span><span class="lifetime">'a </span><span class="kw-2">mut </span>V { |
| <span class="kw">let </span>index = <span class="self">self</span>.index; |
| <span class="self">self</span>.map.insert(index, value); |
| <span class="kw-2">&mut </span><span class="self">self</span>.map[index] |
| } |
| } |
| |
| <span class="kw">impl</span><<span class="lifetime">'a</span>, V> OccupiedEntry<<span class="lifetime">'a</span>, V> { |
| <span class="doccomment">/// Gets a reference to the value in the entry. |
| </span><span class="kw">pub fn </span>get(<span class="kw-2">&</span><span class="self">self</span>) -> <span class="kw-2">&</span>V { |
| <span class="kw">let </span>index = <span class="self">self</span>.index; |
| <span class="kw-2">&</span><span class="self">self</span>.map[index] |
| } |
| |
| <span class="doccomment">/// Gets a mutable reference to the value in the entry. |
| </span><span class="kw">pub fn </span>get_mut(<span class="kw-2">&mut </span><span class="self">self</span>) -> <span class="kw-2">&mut </span>V { |
| <span class="kw">let </span>index = <span class="self">self</span>.index; |
| <span class="kw-2">&mut </span><span class="self">self</span>.map[index] |
| } |
| |
| <span class="doccomment">/// Converts the entry into a mutable reference to its value. |
| </span><span class="kw">pub fn </span>into_mut(<span class="self">self</span>) -> <span class="kw-2">&</span><span class="lifetime">'a </span><span class="kw-2">mut </span>V { |
| <span class="kw">let </span>index = <span class="self">self</span>.index; |
| <span class="kw-2">&mut </span><span class="self">self</span>.map[index] |
| } |
| |
| <span class="doccomment">/// Sets the value of the entry with the OccupiedEntry's key, |
| /// and returns the entry's old value. |
| </span><span class="kw">pub fn </span>insert(<span class="kw-2">&mut </span><span class="self">self</span>, value: V) -> V { |
| <span class="kw">let </span>index = <span class="self">self</span>.index; |
| <span class="self">self</span>.map.insert(index, value).unwrap() |
| } |
| |
| <span class="doccomment">/// Takes the value of the entry out of the map, and returns it. |
| </span><span class="kw">pub fn </span>remove(<span class="self">self</span>) -> V { |
| <span class="kw">let </span>index = <span class="self">self</span>.index; |
| <span class="self">self</span>.map.remove(index).unwrap() |
| } |
| } |
| |
| <span class="kw">impl</span><V: Clone> Clone <span class="kw">for </span>VecMap<V> { |
| <span class="attribute">#[inline] |
| </span><span class="kw">fn </span>clone(<span class="kw-2">&</span><span class="self">self</span>) -> <span class="self">Self </span>{ |
| VecMap { n: <span class="self">self</span>.n, v: <span class="self">self</span>.v.clone() } |
| } |
| |
| <span class="attribute">#[inline] |
| </span><span class="kw">fn </span>clone_from(<span class="kw-2">&mut </span><span class="self">self</span>, source: <span class="kw-2">&</span><span class="self">Self</span>) { |
| <span class="self">self</span>.v.clone_from(<span class="kw-2">&</span>source.v); |
| <span class="self">self</span>.n = source.n; |
| } |
| } |
| |
| <span class="kw">impl</span><V: PartialEq> PartialEq <span class="kw">for </span>VecMap<V> { |
| <span class="kw">fn </span>eq(<span class="kw-2">&</span><span class="self">self</span>, other: <span class="kw-2">&</span><span class="self">Self</span>) -> bool { |
| <span class="self">self</span>.n == other.n && <span class="self">self</span>.iter().eq(other.iter()) |
| } |
| } |
| |
| <span class="kw">impl</span><V: Eq> Eq <span class="kw">for </span>VecMap<V> {} |
| |
| <span class="kw">impl</span><V: PartialOrd> PartialOrd <span class="kw">for </span>VecMap<V> { |
| <span class="attribute">#[inline] |
| </span><span class="kw">fn </span>partial_cmp(<span class="kw-2">&</span><span class="self">self</span>, other: <span class="kw-2">&</span><span class="self">Self</span>) -> <span class="prelude-ty">Option</span><Ordering> { |
| <span class="self">self</span>.iter().partial_cmp(other.iter()) |
| } |
| } |
| |
| <span class="kw">impl</span><V: Ord> Ord <span class="kw">for </span>VecMap<V> { |
| <span class="attribute">#[inline] |
| </span><span class="kw">fn </span>cmp(<span class="kw-2">&</span><span class="self">self</span>, other: <span class="kw-2">&</span><span class="self">Self</span>) -> Ordering { |
| <span class="self">self</span>.iter().cmp(other.iter()) |
| } |
| } |
| |
| <span class="kw">impl</span><V: fmt::Debug> fmt::Debug <span class="kw">for </span>VecMap<V> { |
| <span class="kw">fn </span>fmt(<span class="kw-2">&</span><span class="self">self</span>, f: <span class="kw-2">&mut </span>fmt::Formatter) -> fmt::Result { |
| f.debug_map().entries(<span class="self">self</span>).finish() |
| } |
| } |
| |
| <span class="kw">impl</span><V> FromIterator<(usize, V)> <span class="kw">for </span>VecMap<V> { |
| <span class="kw">fn </span>from_iter<I: IntoIterator<Item = (usize, V)>>(iter: I) -> <span class="self">Self </span>{ |
| <span class="kw">let </span><span class="kw-2">mut </span>map = <span class="self">Self</span>::new(); |
| map.extend(iter); |
| map |
| } |
| } |
| |
| <span class="kw">impl</span><T> IntoIterator <span class="kw">for </span>VecMap<T> { |
| <span class="kw">type </span>Item = (usize, T); |
| <span class="kw">type </span>IntoIter = IntoIter<T>; |
| |
| <span class="doccomment">/// Returns an iterator visiting all key-value pairs in ascending order of |
| /// the keys, consuming the original `VecMap`. |
| /// The iterator's element type is `(usize, &'r V)`. |
| /// |
| /// # Examples |
| /// |
| /// ``` |
| /// use vec_map::VecMap; |
| /// |
| /// let mut map = VecMap::new(); |
| /// map.insert(1, "a"); |
| /// map.insert(3, "c"); |
| /// map.insert(2, "b"); |
| /// |
| /// let vec: Vec<(usize, &str)> = map.into_iter().collect(); |
| /// |
| /// assert_eq!(vec, [(1, "a"), (2, "b"), (3, "c")]); |
| /// ``` |
| </span><span class="kw">fn </span>into_iter(<span class="self">self</span>) -> IntoIter<T> { |
| IntoIter { |
| n: <span class="self">self</span>.n, |
| yielded: <span class="number">0</span>, |
| iter: <span class="self">self</span>.v.into_iter().enumerate() |
| } |
| } |
| } |
| |
| <span class="kw">impl</span><<span class="lifetime">'a</span>, T> IntoIterator <span class="kw">for </span><span class="kw-2">&</span><span class="lifetime">'a </span>VecMap<T> { |
| <span class="kw">type </span>Item = (usize, <span class="kw-2">&</span><span class="lifetime">'a </span>T); |
| <span class="kw">type </span>IntoIter = Iter<<span class="lifetime">'a</span>, T>; |
| |
| <span class="kw">fn </span>into_iter(<span class="self">self</span>) -> Iter<<span class="lifetime">'a</span>, T> { |
| <span class="self">self</span>.iter() |
| } |
| } |
| |
| <span class="kw">impl</span><<span class="lifetime">'a</span>, T> IntoIterator <span class="kw">for </span><span class="kw-2">&</span><span class="lifetime">'a </span><span class="kw-2">mut </span>VecMap<T> { |
| <span class="kw">type </span>Item = (usize, <span class="kw-2">&</span><span class="lifetime">'a </span><span class="kw-2">mut </span>T); |
| <span class="kw">type </span>IntoIter = IterMut<<span class="lifetime">'a</span>, T>; |
| |
| <span class="kw">fn </span>into_iter(<span class="self">self</span>) -> IterMut<<span class="lifetime">'a</span>, T> { |
| <span class="self">self</span>.iter_mut() |
| } |
| } |
| |
| <span class="kw">impl</span><V> Extend<(usize, V)> <span class="kw">for </span>VecMap<V> { |
| <span class="kw">fn </span>extend<I: IntoIterator<Item = (usize, V)>>(<span class="kw-2">&mut </span><span class="self">self</span>, iter: I) { |
| <span class="kw">for </span>(k, v) <span class="kw">in </span>iter { |
| <span class="self">self</span>.insert(k, v); |
| } |
| } |
| } |
| |
| <span class="kw">impl</span><<span class="lifetime">'a</span>, V: Copy> Extend<(usize, <span class="kw-2">&</span><span class="lifetime">'a </span>V)> <span class="kw">for </span>VecMap<V> { |
| <span class="kw">fn </span>extend<I: IntoIterator<Item = (usize, <span class="kw-2">&</span><span class="lifetime">'a </span>V)>>(<span class="kw-2">&mut </span><span class="self">self</span>, iter: I) { |
| <span class="self">self</span>.extend(iter.into_iter().map(|(key, <span class="kw-2">&</span>value)| (key, value))); |
| } |
| } |
| |
| <span class="kw">impl</span><V> Index<usize> <span class="kw">for </span>VecMap<V> { |
| <span class="kw">type </span>Output = V; |
| |
| <span class="attribute">#[inline] |
| </span><span class="kw">fn </span>index(<span class="kw-2">&</span><span class="self">self</span>, i: usize) -> <span class="kw-2">&</span>V { |
| <span class="self">self</span>.get(i).expect(<span class="string">"key not present"</span>) |
| } |
| } |
| |
| <span class="kw">impl</span><<span class="lifetime">'a</span>, V> Index<<span class="kw-2">&</span><span class="lifetime">'a </span>usize> <span class="kw">for </span>VecMap<V> { |
| <span class="kw">type </span>Output = V; |
| |
| <span class="attribute">#[inline] |
| </span><span class="kw">fn </span>index(<span class="kw-2">&</span><span class="self">self</span>, i: <span class="kw-2">&</span>usize) -> <span class="kw-2">&</span>V { |
| <span class="self">self</span>.get(<span class="kw-2">*</span>i).expect(<span class="string">"key not present"</span>) |
| } |
| } |
| |
| <span class="kw">impl</span><V> IndexMut<usize> <span class="kw">for </span>VecMap<V> { |
| <span class="attribute">#[inline] |
| </span><span class="kw">fn </span>index_mut(<span class="kw-2">&mut </span><span class="self">self</span>, i: usize) -> <span class="kw-2">&mut </span>V { |
| <span class="self">self</span>.get_mut(i).expect(<span class="string">"key not present"</span>) |
| } |
| } |
| |
| <span class="kw">impl</span><<span class="lifetime">'a</span>, V> IndexMut<<span class="kw-2">&</span><span class="lifetime">'a </span>usize> <span class="kw">for </span>VecMap<V> { |
| <span class="attribute">#[inline] |
| </span><span class="kw">fn </span>index_mut(<span class="kw-2">&mut </span><span class="self">self</span>, i: <span class="kw-2">&</span>usize) -> <span class="kw-2">&mut </span>V { |
| <span class="self">self</span>.get_mut(<span class="kw-2">*</span>i).expect(<span class="string">"key not present"</span>) |
| } |
| } |
| |
| <span class="macro">macro_rules! </span>iterator { |
| (<span class="kw">impl </span><span class="macro-nonterminal">$name</span>:ident -> <span class="macro-nonterminal">$elem</span>:ty, $(<span class="macro-nonterminal">$getter</span>:ident),+) => { |
| <span class="kw">impl</span><<span class="lifetime">'a</span>, V> Iterator <span class="kw">for </span><span class="macro-nonterminal">$name</span><<span class="lifetime">'a</span>, V> { |
| <span class="kw">type </span>Item = <span class="macro-nonterminal">$elem</span>; |
| |
| <span class="attribute">#[inline] |
| </span><span class="kw">fn </span>next(<span class="kw-2">&mut </span><span class="self">self</span>) -> <span class="prelude-ty">Option</span><<span class="macro-nonterminal">$elem</span>> { |
| <span class="kw">while </span><span class="self">self</span>.front < <span class="self">self</span>.back { |
| <span class="kw">if let </span><span class="prelude-val">Some</span>(elem) = <span class="self">self</span>.iter.next() { |
| <span class="kw">if let </span><span class="prelude-val">Some</span>(x) = elem$(. <span class="macro-nonterminal">$getter </span>())+ { |
| <span class="kw">let </span>index = <span class="self">self</span>.front; |
| <span class="self">self</span>.front += <span class="number">1</span>; |
| <span class="self">self</span>.yielded += <span class="number">1</span>; |
| <span class="kw">return </span><span class="prelude-val">Some</span>((index, x)); |
| } |
| } |
| <span class="self">self</span>.front += <span class="number">1</span>; |
| } |
| <span class="prelude-val">None |
| </span>} |
| |
| <span class="attribute">#[inline] |
| </span><span class="kw">fn </span>size_hint(<span class="kw-2">&</span><span class="self">self</span>) -> (usize, <span class="prelude-ty">Option</span><usize>) { |
| (<span class="self">self</span>.n - <span class="self">self</span>.yielded, <span class="prelude-val">Some</span>(<span class="self">self</span>.n - <span class="self">self</span>.yielded)) |
| } |
| } |
| } |
| } |
| |
| <span class="macro">macro_rules! </span>double_ended_iterator { |
| (<span class="kw">impl </span><span class="macro-nonterminal">$name</span>:ident -> <span class="macro-nonterminal">$elem</span>:ty, $(<span class="macro-nonterminal">$getter</span>:ident),+) => { |
| <span class="kw">impl</span><<span class="lifetime">'a</span>, V> DoubleEndedIterator <span class="kw">for </span><span class="macro-nonterminal">$name</span><<span class="lifetime">'a</span>, V> { |
| <span class="attribute">#[inline] |
| </span><span class="kw">fn </span>next_back(<span class="kw-2">&mut </span><span class="self">self</span>) -> <span class="prelude-ty">Option</span><<span class="macro-nonterminal">$elem</span>> { |
| <span class="kw">while </span><span class="self">self</span>.front < <span class="self">self</span>.back { |
| <span class="kw">if let </span><span class="prelude-val">Some</span>(elem) = <span class="self">self</span>.iter.next_back() { |
| <span class="kw">if let </span><span class="prelude-val">Some</span>(x) = elem$(. <span class="macro-nonterminal">$getter </span>())+ { |
| <span class="self">self</span>.back -= <span class="number">1</span>; |
| <span class="kw">return </span><span class="prelude-val">Some</span>((<span class="self">self</span>.back, x)); |
| } |
| } |
| <span class="self">self</span>.back -= <span class="number">1</span>; |
| } |
| <span class="prelude-val">None |
| </span>} |
| } |
| } |
| } |
| |
| <span class="doccomment">/// An iterator over the key-value pairs of a map. |
| </span><span class="kw">pub struct </span>Iter<<span class="lifetime">'a</span>, V: <span class="lifetime">'a</span>> { |
| front: usize, |
| back: usize, |
| n: usize, |
| yielded: usize, |
| iter: slice::Iter<<span class="lifetime">'a</span>, <span class="prelude-ty">Option</span><V>> |
| } |
| |
| <span class="comment">// FIXME(#19839) Remove in favor of `#[derive(Clone)]` |
| </span><span class="kw">impl</span><<span class="lifetime">'a</span>, V> Clone <span class="kw">for </span>Iter<<span class="lifetime">'a</span>, V> { |
| <span class="kw">fn </span>clone(<span class="kw-2">&</span><span class="self">self</span>) -> Iter<<span class="lifetime">'a</span>, V> { |
| Iter { |
| front: <span class="self">self</span>.front, |
| back: <span class="self">self</span>.back, |
| n: <span class="self">self</span>.n, |
| yielded: <span class="self">self</span>.yielded, |
| iter: <span class="self">self</span>.iter.clone() |
| } |
| } |
| } |
| |
| <span class="macro">iterator! </span>{ <span class="kw">impl </span>Iter -> (usize, <span class="kw-2">&</span><span class="lifetime">'a </span>V), as_ref } |
| <span class="kw">impl</span><<span class="lifetime">'a</span>, V> ExactSizeIterator <span class="kw">for </span>Iter<<span class="lifetime">'a</span>, V> {} |
| <span class="macro">double_ended_iterator! </span>{ <span class="kw">impl </span>Iter -> (usize, <span class="kw-2">&</span><span class="lifetime">'a </span>V), as_ref } |
| |
| <span class="doccomment">/// An iterator over the key-value pairs of a map, with the |
| /// values being mutable. |
| </span><span class="kw">pub struct </span>IterMut<<span class="lifetime">'a</span>, V: <span class="lifetime">'a</span>> { |
| front: usize, |
| back: usize, |
| n: usize, |
| yielded: usize, |
| iter: slice::IterMut<<span class="lifetime">'a</span>, <span class="prelude-ty">Option</span><V>> |
| } |
| |
| <span class="macro">iterator! </span>{ <span class="kw">impl </span>IterMut -> (usize, <span class="kw-2">&</span><span class="lifetime">'a </span><span class="kw-2">mut </span>V), as_mut } |
| <span class="kw">impl</span><<span class="lifetime">'a</span>, V> ExactSizeIterator <span class="kw">for </span>IterMut<<span class="lifetime">'a</span>, V> {} |
| <span class="macro">double_ended_iterator! </span>{ <span class="kw">impl </span>IterMut -> (usize, <span class="kw-2">&</span><span class="lifetime">'a </span><span class="kw-2">mut </span>V), as_mut } |
| |
| <span class="doccomment">/// An iterator over the keys of a map. |
| </span><span class="kw">pub struct </span>Keys<<span class="lifetime">'a</span>, V: <span class="lifetime">'a</span>> { |
| iter: Iter<<span class="lifetime">'a</span>, V>, |
| } |
| |
| <span class="comment">// FIXME(#19839) Remove in favor of `#[derive(Clone)]` |
| </span><span class="kw">impl</span><<span class="lifetime">'a</span>, V> Clone <span class="kw">for </span>Keys<<span class="lifetime">'a</span>, V> { |
| <span class="kw">fn </span>clone(<span class="kw-2">&</span><span class="self">self</span>) -> Keys<<span class="lifetime">'a</span>, V> { |
| Keys { |
| iter: <span class="self">self</span>.iter.clone() |
| } |
| } |
| } |
| |
| <span class="doccomment">/// An iterator over the values of a map. |
| </span><span class="kw">pub struct </span>Values<<span class="lifetime">'a</span>, V: <span class="lifetime">'a</span>> { |
| iter: Iter<<span class="lifetime">'a</span>, V>, |
| } |
| |
| <span class="comment">// FIXME(#19839) Remove in favor of `#[derive(Clone)]` |
| </span><span class="kw">impl</span><<span class="lifetime">'a</span>, V> Clone <span class="kw">for </span>Values<<span class="lifetime">'a</span>, V> { |
| <span class="kw">fn </span>clone(<span class="kw-2">&</span><span class="self">self</span>) -> Values<<span class="lifetime">'a</span>, V> { |
| Values { |
| iter: <span class="self">self</span>.iter.clone() |
| } |
| } |
| } |
| |
| <span class="doccomment">/// An iterator over the values of a map. |
| </span><span class="kw">pub struct </span>ValuesMut<<span class="lifetime">'a</span>, V: <span class="lifetime">'a</span>> { |
| iter_mut: IterMut<<span class="lifetime">'a</span>, V>, |
| } |
| |
| <span class="doccomment">/// A consuming iterator over the key-value pairs of a map. |
| </span><span class="kw">pub struct </span>IntoIter<V> { |
| n: usize, |
| yielded: usize, |
| iter: Enumerate<vec::IntoIter<<span class="prelude-ty">Option</span><V>>>, |
| } |
| |
| <span class="doccomment">/// A draining iterator over the key-value pairs of a map. |
| </span><span class="kw">pub struct </span>Drain<<span class="lifetime">'a</span>, V: <span class="lifetime">'a</span>> { |
| iter: FilterMap< |
| Enumerate<vec::Drain<<span class="lifetime">'a</span>, <span class="prelude-ty">Option</span><V>>>, |
| <span class="kw">fn</span>((usize, <span class="prelude-ty">Option</span><V>)) -> <span class="prelude-ty">Option</span><(usize, V)>> |
| } |
| |
| <span class="kw">impl</span><<span class="lifetime">'a</span>, V> Iterator <span class="kw">for </span>Drain<<span class="lifetime">'a</span>, V> { |
| <span class="kw">type </span>Item = (usize, V); |
| |
| <span class="kw">fn </span>next(<span class="kw-2">&mut </span><span class="self">self</span>) -> <span class="prelude-ty">Option</span><(usize, V)> { <span class="self">self</span>.iter.next() } |
| <span class="kw">fn </span>size_hint(<span class="kw-2">&</span><span class="self">self</span>) -> (usize, <span class="prelude-ty">Option</span><usize>) { <span class="self">self</span>.iter.size_hint() } |
| } |
| |
| <span class="kw">impl</span><<span class="lifetime">'a</span>, V> ExactSizeIterator <span class="kw">for </span>Drain<<span class="lifetime">'a</span>, V> {} |
| |
| <span class="kw">impl</span><<span class="lifetime">'a</span>, V> DoubleEndedIterator <span class="kw">for </span>Drain<<span class="lifetime">'a</span>, V> { |
| <span class="kw">fn </span>next_back(<span class="kw-2">&mut </span><span class="self">self</span>) -> <span class="prelude-ty">Option</span><(usize, V)> { <span class="self">self</span>.iter.next_back() } |
| } |
| |
| <span class="kw">impl</span><<span class="lifetime">'a</span>, V> Iterator <span class="kw">for </span>Keys<<span class="lifetime">'a</span>, V> { |
| <span class="kw">type </span>Item = usize; |
| |
| <span class="kw">fn </span>next(<span class="kw-2">&mut </span><span class="self">self</span>) -> <span class="prelude-ty">Option</span><usize> { <span class="self">self</span>.iter.next().map(|e| e.<span class="number">0</span>) } |
| <span class="kw">fn </span>size_hint(<span class="kw-2">&</span><span class="self">self</span>) -> (usize, <span class="prelude-ty">Option</span><usize>) { <span class="self">self</span>.iter.size_hint() } |
| } |
| |
| <span class="kw">impl</span><<span class="lifetime">'a</span>, V> ExactSizeIterator <span class="kw">for </span>Keys<<span class="lifetime">'a</span>, V> {} |
| |
| <span class="kw">impl</span><<span class="lifetime">'a</span>, V> DoubleEndedIterator <span class="kw">for </span>Keys<<span class="lifetime">'a</span>, V> { |
| <span class="kw">fn </span>next_back(<span class="kw-2">&mut </span><span class="self">self</span>) -> <span class="prelude-ty">Option</span><usize> { <span class="self">self</span>.iter.next_back().map(|e| e.<span class="number">0</span>) } |
| } |
| |
| <span class="kw">impl</span><<span class="lifetime">'a</span>, V> Iterator <span class="kw">for </span>Values<<span class="lifetime">'a</span>, V> { |
| <span class="kw">type </span>Item = <span class="kw-2">&</span><span class="lifetime">'a </span>V; |
| |
| <span class="kw">fn </span>next(<span class="kw-2">&mut </span><span class="self">self</span>) -> <span class="prelude-ty">Option</span><(<span class="kw-2">&</span><span class="lifetime">'a </span>V)> { <span class="self">self</span>.iter.next().map(|e| e.<span class="number">1</span>) } |
| <span class="kw">fn </span>size_hint(<span class="kw-2">&</span><span class="self">self</span>) -> (usize, <span class="prelude-ty">Option</span><usize>) { <span class="self">self</span>.iter.size_hint() } |
| } |
| |
| <span class="kw">impl</span><<span class="lifetime">'a</span>, V> ExactSizeIterator <span class="kw">for </span>Values<<span class="lifetime">'a</span>, V> {} |
| |
| <span class="kw">impl</span><<span class="lifetime">'a</span>, V> DoubleEndedIterator <span class="kw">for </span>Values<<span class="lifetime">'a</span>, V> { |
| <span class="kw">fn </span>next_back(<span class="kw-2">&mut </span><span class="self">self</span>) -> <span class="prelude-ty">Option</span><(<span class="kw-2">&</span><span class="lifetime">'a </span>V)> { <span class="self">self</span>.iter.next_back().map(|e| e.<span class="number">1</span>) } |
| } |
| |
| <span class="kw">impl</span><<span class="lifetime">'a</span>, V> Iterator <span class="kw">for </span>ValuesMut<<span class="lifetime">'a</span>, V> { |
| <span class="kw">type </span>Item = <span class="kw-2">&</span><span class="lifetime">'a </span><span class="kw-2">mut </span>V; |
| |
| <span class="kw">fn </span>next(<span class="kw-2">&mut </span><span class="self">self</span>) -> <span class="prelude-ty">Option</span><(<span class="kw-2">&</span><span class="lifetime">'a </span><span class="kw-2">mut </span>V)> { <span class="self">self</span>.iter_mut.next().map(|e| e.<span class="number">1</span>) } |
| <span class="kw">fn </span>size_hint(<span class="kw-2">&</span><span class="self">self</span>) -> (usize, <span class="prelude-ty">Option</span><usize>) { <span class="self">self</span>.iter_mut.size_hint() } |
| } |
| |
| <span class="kw">impl</span><<span class="lifetime">'a</span>, V> ExactSizeIterator <span class="kw">for </span>ValuesMut<<span class="lifetime">'a</span>, V> {} |
| |
| <span class="kw">impl</span><<span class="lifetime">'a</span>, V> DoubleEndedIterator <span class="kw">for </span>ValuesMut<<span class="lifetime">'a</span>, V> { |
| <span class="kw">fn </span>next_back(<span class="kw-2">&mut </span><span class="self">self</span>) -> <span class="prelude-ty">Option</span><<span class="kw-2">&</span><span class="lifetime">'a </span><span class="kw-2">mut </span>V> { <span class="self">self</span>.iter_mut.next_back().map(|e| e.<span class="number">1</span>) } |
| } |
| |
| <span class="kw">impl</span><V> Iterator <span class="kw">for </span>IntoIter<V> { |
| <span class="kw">type </span>Item = (usize, V); |
| |
| <span class="kw">fn </span>next(<span class="kw-2">&mut </span><span class="self">self</span>) -> <span class="prelude-ty">Option</span><(usize, V)> { |
| <span class="kw">loop </span>{ |
| <span class="kw">match </span><span class="self">self</span>.iter.next() { |
| <span class="prelude-val">None </span>=> <span class="kw">return </span><span class="prelude-val">None</span>, |
| <span class="prelude-val">Some</span>((i, <span class="prelude-val">Some</span>(value))) => { |
| <span class="self">self</span>.yielded += <span class="number">1</span>; |
| <span class="kw">return </span><span class="prelude-val">Some</span>((i, value)) |
| }, |
| <span class="kw">_ </span>=> {} |
| } |
| } |
| } |
| |
| <span class="kw">fn </span>size_hint(<span class="kw-2">&</span><span class="self">self</span>) -> (usize, <span class="prelude-ty">Option</span><usize>) { |
| (<span class="self">self</span>.n - <span class="self">self</span>.yielded, <span class="prelude-val">Some</span>(<span class="self">self</span>.n - <span class="self">self</span>.yielded)) |
| } |
| } |
| |
| <span class="kw">impl</span><V> ExactSizeIterator <span class="kw">for </span>IntoIter<V> {} |
| |
| <span class="kw">impl</span><V> DoubleEndedIterator <span class="kw">for </span>IntoIter<V> { |
| <span class="kw">fn </span>next_back(<span class="kw-2">&mut </span><span class="self">self</span>) -> <span class="prelude-ty">Option</span><(usize, V)> { |
| <span class="kw">loop </span>{ |
| <span class="kw">match </span><span class="self">self</span>.iter.next_back() { |
| <span class="prelude-val">None </span>=> <span class="kw">return </span><span class="prelude-val">None</span>, |
| <span class="prelude-val">Some</span>((i, <span class="prelude-val">Some</span>(value))) => <span class="kw">return </span><span class="prelude-val">Some</span>((i, value)), |
| <span class="kw">_ </span>=> {} |
| } |
| } |
| } |
| } |
| |
| <span class="attribute">#[allow(dead_code)] |
| </span><span class="kw">fn </span>assert_properties() { |
| <span class="kw">fn </span>vec_map_covariant<<span class="lifetime">'a</span>, T>(map: VecMap<<span class="kw-2">&</span><span class="lifetime">'static </span>T>) -> VecMap<<span class="kw-2">&</span><span class="lifetime">'a </span>T> { map } |
| |
| <span class="kw">fn </span>into_iter_covariant<<span class="lifetime">'a</span>, T>(iter: IntoIter<<span class="kw-2">&</span><span class="lifetime">'static </span>T>) -> IntoIter<<span class="kw-2">&</span><span class="lifetime">'a </span>T> { iter } |
| |
| <span class="kw">fn </span>iter_covariant<<span class="lifetime">'i</span>, <span class="lifetime">'a</span>, T>(iter: Iter<<span class="lifetime">'i</span>, <span class="kw-2">&</span><span class="lifetime">'static </span>T>) -> Iter<<span class="lifetime">'i</span>, <span class="kw-2">&</span><span class="lifetime">'a </span>T> { iter } |
| |
| <span class="kw">fn </span>keys_covariant<<span class="lifetime">'i</span>, <span class="lifetime">'a</span>, T>(iter: Keys<<span class="lifetime">'i</span>, <span class="kw-2">&</span><span class="lifetime">'static </span>T>) -> Keys<<span class="lifetime">'i</span>, <span class="kw-2">&</span><span class="lifetime">'a </span>T> { iter } |
| |
| <span class="kw">fn </span>values_covariant<<span class="lifetime">'i</span>, <span class="lifetime">'a</span>, T>(iter: Values<<span class="lifetime">'i</span>, <span class="kw-2">&</span><span class="lifetime">'static </span>T>) -> Values<<span class="lifetime">'i</span>, <span class="kw-2">&</span><span class="lifetime">'a </span>T> { iter } |
| } |
| |
| <span class="attribute">#[cfg(test)] |
| </span><span class="kw">mod </span>test { |
| <span class="kw">use </span><span class="kw">super</span>::VecMap; |
| <span class="kw">use </span><span class="kw">super</span>::Entry::{Occupied, Vacant}; |
| <span class="kw">use </span>std::hash::{Hash, Hasher}; |
| <span class="kw">use </span>std::collections::hash_map::DefaultHasher; |
| |
| <span class="attribute">#[test] |
| </span><span class="kw">fn </span>test_get_mut() { |
| <span class="kw">let </span><span class="kw-2">mut </span>m = VecMap::new(); |
| <span class="macro">assert!</span>(m.insert(<span class="number">1</span>, <span class="number">12</span>).is_none()); |
| <span class="macro">assert!</span>(m.insert(<span class="number">2</span>, <span class="number">8</span>).is_none()); |
| <span class="macro">assert!</span>(m.insert(<span class="number">5</span>, <span class="number">14</span>).is_none()); |
| <span class="kw">let </span>new = <span class="number">100</span>; |
| <span class="kw">match </span>m.get_mut(<span class="number">5</span>) { |
| <span class="prelude-val">None </span>=> <span class="macro">panic!</span>(), <span class="prelude-val">Some</span>(x) => <span class="kw-2">*</span>x = new |
| } |
| <span class="macro">assert_eq!</span>(m.get(<span class="number">5</span>), <span class="prelude-val">Some</span>(<span class="kw-2">&</span>new)); |
| } |
| |
| <span class="attribute">#[test] |
| </span><span class="kw">fn </span>test_len() { |
| <span class="kw">let </span><span class="kw-2">mut </span>map = VecMap::new(); |
| <span class="macro">assert_eq!</span>(map.len(), <span class="number">0</span>); |
| <span class="macro">assert!</span>(map.is_empty()); |
| <span class="macro">assert!</span>(map.insert(<span class="number">5</span>, <span class="number">20</span>).is_none()); |
| <span class="macro">assert_eq!</span>(map.len(), <span class="number">1</span>); |
| <span class="macro">assert!</span>(!map.is_empty()); |
| <span class="macro">assert!</span>(map.insert(<span class="number">11</span>, <span class="number">12</span>).is_none()); |
| <span class="macro">assert_eq!</span>(map.len(), <span class="number">2</span>); |
| <span class="macro">assert!</span>(!map.is_empty()); |
| <span class="macro">assert!</span>(map.insert(<span class="number">14</span>, <span class="number">22</span>).is_none()); |
| <span class="macro">assert_eq!</span>(map.len(), <span class="number">3</span>); |
| <span class="macro">assert!</span>(!map.is_empty()); |
| } |
| |
| <span class="attribute">#[test] |
| </span><span class="kw">fn </span>test_clear() { |
| <span class="kw">let </span><span class="kw-2">mut </span>map = VecMap::new(); |
| <span class="macro">assert!</span>(map.insert(<span class="number">5</span>, <span class="number">20</span>).is_none()); |
| <span class="macro">assert!</span>(map.insert(<span class="number">11</span>, <span class="number">12</span>).is_none()); |
| <span class="macro">assert!</span>(map.insert(<span class="number">14</span>, <span class="number">22</span>).is_none()); |
| map.clear(); |
| <span class="macro">assert!</span>(map.is_empty()); |
| <span class="macro">assert!</span>(map.get(<span class="number">5</span>).is_none()); |
| <span class="macro">assert!</span>(map.get(<span class="number">11</span>).is_none()); |
| <span class="macro">assert!</span>(map.get(<span class="number">14</span>).is_none()); |
| } |
| |
| <span class="attribute">#[test] |
| </span><span class="kw">fn </span>test_insert() { |
| <span class="kw">let </span><span class="kw-2">mut </span>m = VecMap::new(); |
| <span class="macro">assert_eq!</span>(m.insert(<span class="number">1</span>, <span class="number">2</span>), <span class="prelude-val">None</span>); |
| <span class="macro">assert_eq!</span>(m.insert(<span class="number">1</span>, <span class="number">3</span>), <span class="prelude-val">Some</span>(<span class="number">2</span>)); |
| <span class="macro">assert_eq!</span>(m.insert(<span class="number">1</span>, <span class="number">4</span>), <span class="prelude-val">Some</span>(<span class="number">3</span>)); |
| } |
| |
| <span class="attribute">#[test] |
| </span><span class="kw">fn </span>test_remove() { |
| <span class="kw">let </span><span class="kw-2">mut </span>m = VecMap::new(); |
| m.insert(<span class="number">1</span>, <span class="number">2</span>); |
| <span class="macro">assert_eq!</span>(m.remove(<span class="number">1</span>), <span class="prelude-val">Some</span>(<span class="number">2</span>)); |
| <span class="macro">assert_eq!</span>(m.remove(<span class="number">1</span>), <span class="prelude-val">None</span>); |
| } |
| |
| <span class="attribute">#[test] |
| </span><span class="kw">fn </span>test_keys() { |
| <span class="kw">let </span><span class="kw-2">mut </span>map = VecMap::new(); |
| map.insert(<span class="number">1</span>, <span class="string">'a'</span>); |
| map.insert(<span class="number">2</span>, <span class="string">'b'</span>); |
| map.insert(<span class="number">3</span>, <span class="string">'c'</span>); |
| <span class="kw">let </span>keys: Vec<<span class="kw">_</span>> = map.keys().collect(); |
| <span class="macro">assert_eq!</span>(keys.len(), <span class="number">3</span>); |
| <span class="macro">assert!</span>(keys.contains(<span class="kw-2">&</span><span class="number">1</span>)); |
| <span class="macro">assert!</span>(keys.contains(<span class="kw-2">&</span><span class="number">2</span>)); |
| <span class="macro">assert!</span>(keys.contains(<span class="kw-2">&</span><span class="number">3</span>)); |
| } |
| |
| <span class="attribute">#[test] |
| </span><span class="kw">fn </span>test_values() { |
| <span class="kw">let </span><span class="kw-2">mut </span>map = VecMap::new(); |
| map.insert(<span class="number">1</span>, <span class="string">'a'</span>); |
| map.insert(<span class="number">2</span>, <span class="string">'b'</span>); |
| map.insert(<span class="number">3</span>, <span class="string">'c'</span>); |
| <span class="kw">let </span>values: Vec<<span class="kw">_</span>> = map.values().cloned().collect(); |
| <span class="macro">assert_eq!</span>(values.len(), <span class="number">3</span>); |
| <span class="macro">assert!</span>(values.contains(<span class="kw-2">&</span><span class="string">'a'</span>)); |
| <span class="macro">assert!</span>(values.contains(<span class="kw-2">&</span><span class="string">'b'</span>)); |
| <span class="macro">assert!</span>(values.contains(<span class="kw-2">&</span><span class="string">'c'</span>)); |
| } |
| |
| <span class="attribute">#[test] |
| </span><span class="kw">fn </span>test_iterator() { |
| <span class="kw">let </span><span class="kw-2">mut </span>m = VecMap::new(); |
| |
| <span class="macro">assert!</span>(m.insert(<span class="number">0</span>, <span class="number">1</span>).is_none()); |
| <span class="macro">assert!</span>(m.insert(<span class="number">1</span>, <span class="number">2</span>).is_none()); |
| <span class="macro">assert!</span>(m.insert(<span class="number">3</span>, <span class="number">5</span>).is_none()); |
| <span class="macro">assert!</span>(m.insert(<span class="number">6</span>, <span class="number">10</span>).is_none()); |
| <span class="macro">assert!</span>(m.insert(<span class="number">10</span>, <span class="number">11</span>).is_none()); |
| |
| <span class="kw">let </span><span class="kw-2">mut </span>it = m.iter(); |
| <span class="macro">assert_eq!</span>(it.size_hint(), (<span class="number">5</span>, <span class="prelude-val">Some</span>(<span class="number">5</span>))); |
| <span class="macro">assert_eq!</span>(it.next().unwrap(), (<span class="number">0</span>, <span class="kw-2">&</span><span class="number">1</span>)); |
| <span class="macro">assert_eq!</span>(it.size_hint(), (<span class="number">4</span>, <span class="prelude-val">Some</span>(<span class="number">4</span>))); |
| <span class="macro">assert_eq!</span>(it.next().unwrap(), (<span class="number">1</span>, <span class="kw-2">&</span><span class="number">2</span>)); |
| <span class="macro">assert_eq!</span>(it.size_hint(), (<span class="number">3</span>, <span class="prelude-val">Some</span>(<span class="number">3</span>))); |
| <span class="macro">assert_eq!</span>(it.next().unwrap(), (<span class="number">3</span>, <span class="kw-2">&</span><span class="number">5</span>)); |
| <span class="macro">assert_eq!</span>(it.size_hint(), (<span class="number">2</span>, <span class="prelude-val">Some</span>(<span class="number">2</span>))); |
| <span class="macro">assert_eq!</span>(it.next().unwrap(), (<span class="number">6</span>, <span class="kw-2">&</span><span class="number">10</span>)); |
| <span class="macro">assert_eq!</span>(it.size_hint(), (<span class="number">1</span>, <span class="prelude-val">Some</span>(<span class="number">1</span>))); |
| <span class="macro">assert_eq!</span>(it.next().unwrap(), (<span class="number">10</span>, <span class="kw-2">&</span><span class="number">11</span>)); |
| <span class="macro">assert_eq!</span>(it.size_hint(), (<span class="number">0</span>, <span class="prelude-val">Some</span>(<span class="number">0</span>))); |
| <span class="macro">assert!</span>(it.next().is_none()); |
| } |
| |
| <span class="attribute">#[test] |
| </span><span class="kw">fn </span>test_iterator_size_hints() { |
| <span class="kw">let </span><span class="kw-2">mut </span>m = VecMap::new(); |
| |
| <span class="macro">assert!</span>(m.insert(<span class="number">0</span>, <span class="number">1</span>).is_none()); |
| <span class="macro">assert!</span>(m.insert(<span class="number">1</span>, <span class="number">2</span>).is_none()); |
| <span class="macro">assert!</span>(m.insert(<span class="number">3</span>, <span class="number">5</span>).is_none()); |
| <span class="macro">assert!</span>(m.insert(<span class="number">6</span>, <span class="number">10</span>).is_none()); |
| <span class="macro">assert!</span>(m.insert(<span class="number">10</span>, <span class="number">11</span>).is_none()); |
| |
| <span class="macro">assert_eq!</span>(m.iter().size_hint(), (<span class="number">5</span>, <span class="prelude-val">Some</span>(<span class="number">5</span>))); |
| <span class="macro">assert_eq!</span>(m.iter().rev().size_hint(), (<span class="number">5</span>, <span class="prelude-val">Some</span>(<span class="number">5</span>))); |
| <span class="macro">assert_eq!</span>(m.iter_mut().size_hint(), (<span class="number">5</span>, <span class="prelude-val">Some</span>(<span class="number">5</span>))); |
| <span class="macro">assert_eq!</span>(m.iter_mut().rev().size_hint(), (<span class="number">5</span>, <span class="prelude-val">Some</span>(<span class="number">5</span>))); |
| } |
| |
| <span class="attribute">#[test] |
| </span><span class="kw">fn </span>test_mut_iterator() { |
| <span class="kw">let </span><span class="kw-2">mut </span>m = VecMap::new(); |
| |
| <span class="macro">assert!</span>(m.insert(<span class="number">0</span>, <span class="number">1</span>).is_none()); |
| <span class="macro">assert!</span>(m.insert(<span class="number">1</span>, <span class="number">2</span>).is_none()); |
| <span class="macro">assert!</span>(m.insert(<span class="number">3</span>, <span class="number">5</span>).is_none()); |
| <span class="macro">assert!</span>(m.insert(<span class="number">6</span>, <span class="number">10</span>).is_none()); |
| <span class="macro">assert!</span>(m.insert(<span class="number">10</span>, <span class="number">11</span>).is_none()); |
| |
| <span class="kw">for </span>(k, v) <span class="kw">in </span><span class="kw-2">&mut </span>m { |
| <span class="kw-2">*</span>v += k <span class="kw">as </span>isize; |
| } |
| |
| <span class="kw">let </span><span class="kw-2">mut </span>it = m.iter(); |
| <span class="macro">assert_eq!</span>(it.next().unwrap(), (<span class="number">0</span>, <span class="kw-2">&</span><span class="number">1</span>)); |
| <span class="macro">assert_eq!</span>(it.next().unwrap(), (<span class="number">1</span>, <span class="kw-2">&</span><span class="number">3</span>)); |
| <span class="macro">assert_eq!</span>(it.next().unwrap(), (<span class="number">3</span>, <span class="kw-2">&</span><span class="number">8</span>)); |
| <span class="macro">assert_eq!</span>(it.next().unwrap(), (<span class="number">6</span>, <span class="kw-2">&</span><span class="number">16</span>)); |
| <span class="macro">assert_eq!</span>(it.next().unwrap(), (<span class="number">10</span>, <span class="kw-2">&</span><span class="number">21</span>)); |
| <span class="macro">assert!</span>(it.next().is_none()); |
| } |
| |
| <span class="attribute">#[test] |
| </span><span class="kw">fn </span>test_rev_iterator() { |
| <span class="kw">let </span><span class="kw-2">mut </span>m = VecMap::new(); |
| |
| <span class="macro">assert!</span>(m.insert(<span class="number">0</span>, <span class="number">1</span>).is_none()); |
| <span class="macro">assert!</span>(m.insert(<span class="number">1</span>, <span class="number">2</span>).is_none()); |
| <span class="macro">assert!</span>(m.insert(<span class="number">3</span>, <span class="number">5</span>).is_none()); |
| <span class="macro">assert!</span>(m.insert(<span class="number">6</span>, <span class="number">10</span>).is_none()); |
| <span class="macro">assert!</span>(m.insert(<span class="number">10</span>, <span class="number">11</span>).is_none()); |
| |
| <span class="kw">let </span><span class="kw-2">mut </span>it = m.iter().rev(); |
| <span class="macro">assert_eq!</span>(it.next().unwrap(), (<span class="number">10</span>, <span class="kw-2">&</span><span class="number">11</span>)); |
| <span class="macro">assert_eq!</span>(it.next().unwrap(), (<span class="number">6</span>, <span class="kw-2">&</span><span class="number">10</span>)); |
| <span class="macro">assert_eq!</span>(it.next().unwrap(), (<span class="number">3</span>, <span class="kw-2">&</span><span class="number">5</span>)); |
| <span class="macro">assert_eq!</span>(it.next().unwrap(), (<span class="number">1</span>, <span class="kw-2">&</span><span class="number">2</span>)); |
| <span class="macro">assert_eq!</span>(it.next().unwrap(), (<span class="number">0</span>, <span class="kw-2">&</span><span class="number">1</span>)); |
| <span class="macro">assert!</span>(it.next().is_none()); |
| } |
| |
| <span class="attribute">#[test] |
| </span><span class="kw">fn </span>test_mut_rev_iterator() { |
| <span class="kw">let </span><span class="kw-2">mut </span>m = VecMap::new(); |
| |
| <span class="macro">assert!</span>(m.insert(<span class="number">0</span>, <span class="number">1</span>).is_none()); |
| <span class="macro">assert!</span>(m.insert(<span class="number">1</span>, <span class="number">2</span>).is_none()); |
| <span class="macro">assert!</span>(m.insert(<span class="number">3</span>, <span class="number">5</span>).is_none()); |
| <span class="macro">assert!</span>(m.insert(<span class="number">6</span>, <span class="number">10</span>).is_none()); |
| <span class="macro">assert!</span>(m.insert(<span class="number">10</span>, <span class="number">11</span>).is_none()); |
| |
| <span class="kw">for </span>(k, v) <span class="kw">in </span>m.iter_mut().rev() { |
| <span class="kw-2">*</span>v += k <span class="kw">as </span>isize; |
| } |
| |
| <span class="kw">let </span><span class="kw-2">mut </span>it = m.iter(); |
| <span class="macro">assert_eq!</span>(it.next().unwrap(), (<span class="number">0</span>, <span class="kw-2">&</span><span class="number">1</span>)); |
| <span class="macro">assert_eq!</span>(it.next().unwrap(), (<span class="number">1</span>, <span class="kw-2">&</span><span class="number">3</span>)); |
| <span class="macro">assert_eq!</span>(it.next().unwrap(), (<span class="number">3</span>, <span class="kw-2">&</span><span class="number">8</span>)); |
| <span class="macro">assert_eq!</span>(it.next().unwrap(), (<span class="number">6</span>, <span class="kw-2">&</span><span class="number">16</span>)); |
| <span class="macro">assert_eq!</span>(it.next().unwrap(), (<span class="number">10</span>, <span class="kw-2">&</span><span class="number">21</span>)); |
| <span class="macro">assert!</span>(it.next().is_none()); |
| } |
| |
| <span class="attribute">#[test] |
| </span><span class="kw">fn </span>test_move_iter() { |
| <span class="kw">let </span><span class="kw-2">mut </span>m: VecMap<Box<<span class="kw">_</span>>> = VecMap::new(); |
| m.insert(<span class="number">1</span>, Box::new(<span class="number">2</span>)); |
| <span class="kw">let </span><span class="kw-2">mut </span>called = <span class="bool-val">false</span>; |
| <span class="kw">for </span>(k, v) <span class="kw">in </span>m { |
| <span class="macro">assert!</span>(!called); |
| called = <span class="bool-val">true</span>; |
| <span class="macro">assert_eq!</span>(k, <span class="number">1</span>); |
| <span class="macro">assert_eq!</span>(v, Box::new(<span class="number">2</span>)); |
| } |
| <span class="macro">assert!</span>(called); |
| } |
| |
| <span class="attribute">#[test] |
| </span><span class="kw">fn </span>test_drain_iterator() { |
| <span class="kw">let </span><span class="kw-2">mut </span>map = VecMap::new(); |
| map.insert(<span class="number">1</span>, <span class="string">"a"</span>); |
| map.insert(<span class="number">3</span>, <span class="string">"c"</span>); |
| map.insert(<span class="number">2</span>, <span class="string">"b"</span>); |
| |
| <span class="kw">let </span>vec: Vec<<span class="kw">_</span>> = map.drain().collect(); |
| |
| <span class="macro">assert_eq!</span>(vec, [(<span class="number">1</span>, <span class="string">"a"</span>), (<span class="number">2</span>, <span class="string">"b"</span>), (<span class="number">3</span>, <span class="string">"c"</span>)]); |
| <span class="macro">assert_eq!</span>(map.len(), <span class="number">0</span>); |
| } |
| |
| <span class="attribute">#[test] |
| </span><span class="kw">fn </span>test_append() { |
| <span class="kw">let </span><span class="kw-2">mut </span>a = VecMap::new(); |
| a.insert(<span class="number">1</span>, <span class="string">"a"</span>); |
| a.insert(<span class="number">2</span>, <span class="string">"b"</span>); |
| a.insert(<span class="number">3</span>, <span class="string">"c"</span>); |
| |
| <span class="kw">let </span><span class="kw-2">mut </span>b = VecMap::new(); |
| b.insert(<span class="number">3</span>, <span class="string">"d"</span>); <span class="comment">// Overwrite element from a |
| </span>b.insert(<span class="number">4</span>, <span class="string">"e"</span>); |
| b.insert(<span class="number">5</span>, <span class="string">"f"</span>); |
| |
| a.append(<span class="kw-2">&mut </span>b); |
| |
| <span class="macro">assert_eq!</span>(a.len(), <span class="number">5</span>); |
| <span class="macro">assert_eq!</span>(b.len(), <span class="number">0</span>); |
| <span class="comment">// Capacity shouldn't change for possible reuse |
| </span><span class="macro">assert!</span>(b.capacity() >= <span class="number">4</span>); |
| |
| <span class="macro">assert_eq!</span>(a[<span class="number">1</span>], <span class="string">"a"</span>); |
| <span class="macro">assert_eq!</span>(a[<span class="number">2</span>], <span class="string">"b"</span>); |
| <span class="macro">assert_eq!</span>(a[<span class="number">3</span>], <span class="string">"d"</span>); |
| <span class="macro">assert_eq!</span>(a[<span class="number">4</span>], <span class="string">"e"</span>); |
| <span class="macro">assert_eq!</span>(a[<span class="number">5</span>], <span class="string">"f"</span>); |
| } |
| |
| <span class="attribute">#[test] |
| </span><span class="kw">fn </span>test_split_off() { |
| <span class="comment">// Split within the key range |
| </span><span class="kw">let </span><span class="kw-2">mut </span>a = VecMap::new(); |
| a.insert(<span class="number">1</span>, <span class="string">"a"</span>); |
| a.insert(<span class="number">2</span>, <span class="string">"b"</span>); |
| a.insert(<span class="number">3</span>, <span class="string">"c"</span>); |
| a.insert(<span class="number">4</span>, <span class="string">"d"</span>); |
| |
| <span class="kw">let </span>b = a.split_off(<span class="number">3</span>); |
| |
| <span class="macro">assert_eq!</span>(a.len(), <span class="number">2</span>); |
| <span class="macro">assert_eq!</span>(b.len(), <span class="number">2</span>); |
| |
| <span class="macro">assert_eq!</span>(a[<span class="number">1</span>], <span class="string">"a"</span>); |
| <span class="macro">assert_eq!</span>(a[<span class="number">2</span>], <span class="string">"b"</span>); |
| |
| <span class="macro">assert_eq!</span>(b[<span class="number">3</span>], <span class="string">"c"</span>); |
| <span class="macro">assert_eq!</span>(b[<span class="number">4</span>], <span class="string">"d"</span>); |
| |
| <span class="comment">// Split at 0 |
| </span>a.clear(); |
| a.insert(<span class="number">1</span>, <span class="string">"a"</span>); |
| a.insert(<span class="number">2</span>, <span class="string">"b"</span>); |
| a.insert(<span class="number">3</span>, <span class="string">"c"</span>); |
| a.insert(<span class="number">4</span>, <span class="string">"d"</span>); |
| |
| <span class="kw">let </span>b = a.split_off(<span class="number">0</span>); |
| |
| <span class="macro">assert_eq!</span>(a.len(), <span class="number">0</span>); |
| <span class="macro">assert_eq!</span>(b.len(), <span class="number">4</span>); |
| <span class="macro">assert_eq!</span>(b[<span class="number">1</span>], <span class="string">"a"</span>); |
| <span class="macro">assert_eq!</span>(b[<span class="number">2</span>], <span class="string">"b"</span>); |
| <span class="macro">assert_eq!</span>(b[<span class="number">3</span>], <span class="string">"c"</span>); |
| <span class="macro">assert_eq!</span>(b[<span class="number">4</span>], <span class="string">"d"</span>); |
| |
| <span class="comment">// Split behind max_key |
| </span>a.clear(); |
| a.insert(<span class="number">1</span>, <span class="string">"a"</span>); |
| a.insert(<span class="number">2</span>, <span class="string">"b"</span>); |
| a.insert(<span class="number">3</span>, <span class="string">"c"</span>); |
| a.insert(<span class="number">4</span>, <span class="string">"d"</span>); |
| |
| <span class="kw">let </span>b = a.split_off(<span class="number">5</span>); |
| |
| <span class="macro">assert_eq!</span>(a.len(), <span class="number">4</span>); |
| <span class="macro">assert_eq!</span>(b.len(), <span class="number">0</span>); |
| <span class="macro">assert_eq!</span>(a[<span class="number">1</span>], <span class="string">"a"</span>); |
| <span class="macro">assert_eq!</span>(a[<span class="number">2</span>], <span class="string">"b"</span>); |
| <span class="macro">assert_eq!</span>(a[<span class="number">3</span>], <span class="string">"c"</span>); |
| <span class="macro">assert_eq!</span>(a[<span class="number">4</span>], <span class="string">"d"</span>); |
| } |
| |
| <span class="attribute">#[test] |
| </span><span class="kw">fn </span>test_show() { |
| <span class="kw">let </span><span class="kw-2">mut </span>map = VecMap::new(); |
| <span class="kw">let </span>empty = VecMap::<i32>::new(); |
| |
| map.insert(<span class="number">1</span>, <span class="number">2</span>); |
| map.insert(<span class="number">3</span>, <span class="number">4</span>); |
| |
| <span class="kw">let </span>map_str = <span class="macro">format!</span>(<span class="string">"{:?}"</span>, map); |
| <span class="macro">assert!</span>(map_str == <span class="string">"{1: 2, 3: 4}" </span>|| map_str == <span class="string">"{3: 4, 1: 2}"</span>); |
| <span class="macro">assert_eq!</span>(<span class="macro">format!</span>(<span class="string">"{:?}"</span>, empty), <span class="string">"{}"</span>); |
| } |
| |
| <span class="attribute">#[test] |
| </span><span class="kw">fn </span>test_clone() { |
| <span class="kw">let </span><span class="kw-2">mut </span>a = VecMap::new(); |
| |
| a.insert(<span class="number">1</span>, <span class="string">'x'</span>); |
| a.insert(<span class="number">4</span>, <span class="string">'y'</span>); |
| a.insert(<span class="number">6</span>, <span class="string">'z'</span>); |
| |
| <span class="macro">assert_eq!</span>(a.clone().iter().collect::<Vec<<span class="kw">_</span>>>(), [(<span class="number">1</span>, <span class="kw-2">&</span><span class="string">'x'</span>), (<span class="number">4</span>, <span class="kw-2">&</span><span class="string">'y'</span>), (<span class="number">6</span>, <span class="kw-2">&</span><span class="string">'z'</span>)]); |
| } |
| |
| <span class="attribute">#[test] |
| </span><span class="kw">fn </span>test_eq() { |
| <span class="kw">let </span><span class="kw-2">mut </span>a = VecMap::new(); |
| <span class="kw">let </span><span class="kw-2">mut </span>b = VecMap::new(); |
| |
| <span class="macro">assert!</span>(a == b); |
| <span class="macro">assert!</span>(a.insert(<span class="number">0</span>, <span class="number">5</span>).is_none()); |
| <span class="macro">assert!</span>(a != b); |
| <span class="macro">assert!</span>(b.insert(<span class="number">0</span>, <span class="number">4</span>).is_none()); |
| <span class="macro">assert!</span>(a != b); |
| <span class="macro">assert!</span>(a.insert(<span class="number">5</span>, <span class="number">19</span>).is_none()); |
| <span class="macro">assert!</span>(a != b); |
| <span class="macro">assert!</span>(!b.insert(<span class="number">0</span>, <span class="number">5</span>).is_none()); |
| <span class="macro">assert!</span>(a != b); |
| <span class="macro">assert!</span>(b.insert(<span class="number">5</span>, <span class="number">19</span>).is_none()); |
| <span class="macro">assert!</span>(a == b); |
| |
| a = VecMap::new(); |
| b = VecMap::with_capacity(<span class="number">1</span>); |
| <span class="macro">assert!</span>(a == b); |
| } |
| |
| <span class="attribute">#[test] |
| </span><span class="kw">fn </span>test_lt() { |
| <span class="kw">let </span><span class="kw-2">mut </span>a = VecMap::new(); |
| <span class="kw">let </span><span class="kw-2">mut </span>b = VecMap::new(); |
| |
| <span class="macro">assert!</span>(!(a < b) && !(b < a)); |
| <span class="macro">assert!</span>(b.insert(<span class="number">2</span>, <span class="number">5</span>).is_none()); |
| <span class="macro">assert!</span>(a < b); |
| <span class="macro">assert!</span>(a.insert(<span class="number">2</span>, <span class="number">7</span>).is_none()); |
| <span class="macro">assert!</span>(!(a < b) && b < a); |
| <span class="macro">assert!</span>(b.insert(<span class="number">1</span>, <span class="number">0</span>).is_none()); |
| <span class="macro">assert!</span>(b < a); |
| <span class="macro">assert!</span>(a.insert(<span class="number">0</span>, <span class="number">6</span>).is_none()); |
| <span class="macro">assert!</span>(a < b); |
| <span class="macro">assert!</span>(a.insert(<span class="number">6</span>, <span class="number">2</span>).is_none()); |
| <span class="macro">assert!</span>(a < b && !(b < a)); |
| } |
| |
| <span class="attribute">#[test] |
| </span><span class="kw">fn </span>test_ord() { |
| <span class="kw">let </span><span class="kw-2">mut </span>a = VecMap::new(); |
| <span class="kw">let </span><span class="kw-2">mut </span>b = VecMap::new(); |
| |
| <span class="macro">assert!</span>(a <= b && a >= b); |
| <span class="macro">assert!</span>(a.insert(<span class="number">1</span>, <span class="number">1</span>).is_none()); |
| <span class="macro">assert!</span>(a > b && a >= b); |
| <span class="macro">assert!</span>(b < a && b <= a); |
| <span class="macro">assert!</span>(b.insert(<span class="number">2</span>, <span class="number">2</span>).is_none()); |
| <span class="macro">assert!</span>(b > a && b >= a); |
| <span class="macro">assert!</span>(a < b && a <= b); |
| } |
| |
| <span class="attribute">#[test] |
| </span><span class="kw">fn </span>test_hash() { |
| <span class="kw">fn </span>hash<T: Hash>(t: <span class="kw-2">&</span>T) -> u64 { |
| <span class="kw">let </span><span class="kw-2">mut </span>s = DefaultHasher::new(); |
| t.hash(<span class="kw-2">&mut </span>s); |
| s.finish() |
| } |
| |
| <span class="kw">let </span><span class="kw-2">mut </span>x = VecMap::new(); |
| <span class="kw">let </span><span class="kw-2">mut </span>y = VecMap::new(); |
| |
| <span class="macro">assert!</span>(hash(<span class="kw-2">&</span>x) == hash(<span class="kw-2">&</span>y)); |
| x.insert(<span class="number">1</span>, <span class="string">'a'</span>); |
| x.insert(<span class="number">2</span>, <span class="string">'b'</span>); |
| x.insert(<span class="number">3</span>, <span class="string">'c'</span>); |
| |
| y.insert(<span class="number">3</span>, <span class="string">'c'</span>); |
| y.insert(<span class="number">2</span>, <span class="string">'b'</span>); |
| y.insert(<span class="number">1</span>, <span class="string">'a'</span>); |
| |
| <span class="macro">assert!</span>(hash(<span class="kw-2">&</span>x) == hash(<span class="kw-2">&</span>y)); |
| |
| x.insert(<span class="number">1000</span>, <span class="string">'d'</span>); |
| x.remove(<span class="number">1000</span>); |
| |
| <span class="macro">assert!</span>(hash(<span class="kw-2">&</span>x) == hash(<span class="kw-2">&</span>y)); |
| } |
| |
| <span class="attribute">#[test] |
| </span><span class="kw">fn </span>test_from_iter() { |
| <span class="kw">let </span>xs = [(<span class="number">1</span>, <span class="string">'a'</span>), (<span class="number">2</span>, <span class="string">'b'</span>), (<span class="number">3</span>, <span class="string">'c'</span>), (<span class="number">4</span>, <span class="string">'d'</span>), (<span class="number">5</span>, <span class="string">'e'</span>)]; |
| |
| <span class="kw">let </span>map: VecMap<<span class="kw">_</span>> = xs.iter().cloned().collect(); |
| |
| <span class="kw">for </span><span class="kw-2">&</span>(k, v) <span class="kw">in </span><span class="kw-2">&</span>xs { |
| <span class="macro">assert_eq!</span>(map.get(k), <span class="prelude-val">Some</span>(<span class="kw-2">&</span>v)); |
| } |
| } |
| |
| <span class="attribute">#[test] |
| </span><span class="kw">fn </span>test_index() { |
| <span class="kw">let </span><span class="kw-2">mut </span>map = VecMap::new(); |
| |
| map.insert(<span class="number">1</span>, <span class="number">2</span>); |
| map.insert(<span class="number">2</span>, <span class="number">1</span>); |
| map.insert(<span class="number">3</span>, <span class="number">4</span>); |
| |
| <span class="macro">assert_eq!</span>(map[<span class="number">3</span>], <span class="number">4</span>); |
| } |
| |
| <span class="attribute">#[test] |
| #[should_panic] |
| </span><span class="kw">fn </span>test_index_nonexistent() { |
| <span class="kw">let </span><span class="kw-2">mut </span>map = VecMap::new(); |
| |
| map.insert(<span class="number">1</span>, <span class="number">2</span>); |
| map.insert(<span class="number">2</span>, <span class="number">1</span>); |
| map.insert(<span class="number">3</span>, <span class="number">4</span>); |
| |
| map[<span class="number">4</span>]; |
| } |
| |
| <span class="attribute">#[test] |
| </span><span class="kw">fn </span>test_entry() { |
| <span class="kw">let </span>xs = [(<span class="number">1</span>, <span class="number">10</span>), (<span class="number">2</span>, <span class="number">20</span>), (<span class="number">3</span>, <span class="number">30</span>), (<span class="number">4</span>, <span class="number">40</span>), (<span class="number">5</span>, <span class="number">50</span>), (<span class="number">6</span>, <span class="number">60</span>)]; |
| |
| <span class="kw">let </span><span class="kw-2">mut </span>map: VecMap<<span class="kw">_</span>> = xs.iter().cloned().collect(); |
| |
| <span class="comment">// Existing key (insert) |
| </span><span class="kw">match </span>map.entry(<span class="number">1</span>) { |
| Vacant(<span class="kw">_</span>) => <span class="macro">unreachable!</span>(), |
| Occupied(<span class="kw-2">mut </span>view) => { |
| <span class="macro">assert_eq!</span>(view.get(), <span class="kw-2">&</span><span class="number">10</span>); |
| <span class="macro">assert_eq!</span>(view.insert(<span class="number">100</span>), <span class="number">10</span>); |
| } |
| } |
| |
| <span class="macro">assert_eq!</span>(map.get(<span class="number">1</span>).unwrap(), <span class="kw-2">&</span><span class="number">100</span>); |
| <span class="macro">assert_eq!</span>(map.len(), <span class="number">6</span>); |
| |
| <span class="comment">// Existing key (update) |
| </span><span class="kw">match </span>map.entry(<span class="number">2</span>) { |
| Vacant(<span class="kw">_</span>) => <span class="macro">unreachable!</span>(), |
| Occupied(<span class="kw-2">mut </span>view) => { |
| <span class="kw">let </span>v = view.get_mut(); |
| <span class="kw-2">*</span>v <span class="kw-2">*</span>= <span class="number">10</span>; |
| } |
| } |
| |
| <span class="macro">assert_eq!</span>(map.get(<span class="number">2</span>).unwrap(), <span class="kw-2">&</span><span class="number">200</span>); |
| <span class="macro">assert_eq!</span>(map.len(), <span class="number">6</span>); |
| |
| <span class="comment">// Existing key (take) |
| </span><span class="kw">match </span>map.entry(<span class="number">3</span>) { |
| Vacant(<span class="kw">_</span>) => <span class="macro">unreachable!</span>(), |
| Occupied(view) => { |
| <span class="macro">assert_eq!</span>(view.remove(), <span class="number">30</span>); |
| } |
| } |
| |
| <span class="macro">assert_eq!</span>(map.get(<span class="number">3</span>), <span class="prelude-val">None</span>); |
| <span class="macro">assert_eq!</span>(map.len(), <span class="number">5</span>); |
| |
| <span class="comment">// Inexistent key (insert) |
| </span><span class="kw">match </span>map.entry(<span class="number">10</span>) { |
| Occupied(<span class="kw">_</span>) => <span class="macro">unreachable!</span>(), |
| Vacant(view) => { |
| <span class="macro">assert_eq!</span>(<span class="kw-2">*</span>view.insert(<span class="number">1000</span>), <span class="number">1000</span>); |
| } |
| } |
| |
| <span class="macro">assert_eq!</span>(map.get(<span class="number">10</span>).unwrap(), <span class="kw-2">&</span><span class="number">1000</span>); |
| <span class="macro">assert_eq!</span>(map.len(), <span class="number">6</span>); |
| } |
| |
| <span class="attribute">#[test] |
| </span><span class="kw">fn </span>test_extend_ref() { |
| <span class="kw">let </span><span class="kw-2">mut </span>a = VecMap::new(); |
| a.insert(<span class="number">1</span>, <span class="string">"one"</span>); |
| <span class="kw">let </span><span class="kw-2">mut </span>b = VecMap::new(); |
| b.insert(<span class="number">2</span>, <span class="string">"two"</span>); |
| b.insert(<span class="number">3</span>, <span class="string">"three"</span>); |
| |
| a.extend(<span class="kw-2">&</span>b); |
| |
| <span class="macro">assert_eq!</span>(a.len(), <span class="number">3</span>); |
| <span class="macro">assert_eq!</span>(a[<span class="kw-2">&</span><span class="number">1</span>], <span class="string">"one"</span>); |
| <span class="macro">assert_eq!</span>(a[<span class="kw-2">&</span><span class="number">2</span>], <span class="string">"two"</span>); |
| <span class="macro">assert_eq!</span>(a[<span class="kw-2">&</span><span class="number">3</span>], <span class="string">"three"</span>); |
| } |
| |
| <span class="attribute">#[test] |
| #[cfg(feature = <span class="string">"serde"</span>)] |
| </span><span class="kw">fn </span>test_serde() { |
| <span class="kw">use </span>serde::{Serialize, Deserialize}; |
| <span class="kw">fn </span>impls_serde_traits<<span class="lifetime">'de</span>, S: Serialize + Deserialize<<span class="lifetime">'de</span>>>() {} |
| |
| impls_serde_traits::<VecMap<u32>>(); |
| } |
| |
| <span class="attribute">#[test] |
| </span><span class="kw">fn </span>test_retain() { |
| <span class="kw">let </span><span class="kw-2">mut </span>map = VecMap::new(); |
| map.insert(<span class="number">1</span>, <span class="string">"one"</span>); |
| map.insert(<span class="number">2</span>, <span class="string">"two"</span>); |
| map.insert(<span class="number">3</span>, <span class="string">"three"</span>); |
| map.retain(|k, v| <span class="kw">match </span>k { |
| <span class="number">1 </span>=> <span class="bool-val">false</span>, |
| <span class="number">2 </span>=> { |
| <span class="kw-2">*</span>v = <span class="string">"two changed"</span>; |
| <span class="bool-val">true |
| </span>}, |
| <span class="number">3 </span>=> <span class="bool-val">false</span>, |
| <span class="kw">_ </span>=> <span class="macro">panic!</span>(), |
| }); |
| |
| <span class="macro">assert_eq!</span>(map.len(), <span class="number">1</span>); |
| <span class="macro">assert_eq!</span>(map.get(<span class="number">1</span>), <span class="prelude-val">None</span>); |
| <span class="macro">assert_eq!</span>(map[<span class="number">2</span>], <span class="string">"two changed"</span>); |
| <span class="macro">assert_eq!</span>(map.get(<span class="number">3</span>), <span class="prelude-val">None</span>); |
| } |
| } |
| </code></pre></div> |
| </section></div></main><div id="rustdoc-vars" data-root-path="../../" data-current-crate="vec_map" data-themes="ayu,dark,light" data-resource-suffix="" data-rustdoc-version="1.66.0-nightly (5c8bff74b 2022-10-21)" ></div></body></html> |