diff options
Diffstat (limited to 'vendor/indexmap/src/map')
| -rw-r--r-- | vendor/indexmap/src/map/core.rs | 762 | ||||
| -rw-r--r-- | vendor/indexmap/src/map/core/raw.rs | 194 | ||||
| -rw-r--r-- | vendor/indexmap/src/map/iter.rs | 541 | ||||
| -rw-r--r-- | vendor/indexmap/src/map/serde_seq.rs | 138 | ||||
| -rw-r--r-- | vendor/indexmap/src/map/slice.rs | 471 | ||||
| -rw-r--r-- | vendor/indexmap/src/map/tests.rs | 449 |
6 files changed, 2555 insertions, 0 deletions
diff --git a/vendor/indexmap/src/map/core.rs b/vendor/indexmap/src/map/core.rs new file mode 100644 index 0000000..4a78035 --- /dev/null +++ b/vendor/indexmap/src/map/core.rs @@ -0,0 +1,762 @@ +//! This is the core implementation that doesn't depend on the hasher at all. +//! +//! The methods of `IndexMapCore` don't use any Hash properties of K. +//! +//! It's cleaner to separate them out, then the compiler checks that we are not +//! using Hash at all in these methods. +//! +//! However, we should probably not let this show in the public API or docs. + +mod raw; + +use hashbrown::raw::RawTable; + +use crate::vec::{Drain, Vec}; +use crate::TryReserveError; +use core::fmt; +use core::mem; +use core::ops::RangeBounds; + +use crate::util::simplify_range; +use crate::{Bucket, Entries, Equivalent, HashValue}; + +/// Core of the map that does not depend on S +pub(crate) struct IndexMapCore<K, V> { + /// indices mapping from the entry hash to its index. + indices: RawTable<usize>, + /// entries is a dense vec of entries in their order. + entries: Vec<Bucket<K, V>>, +} + +#[inline(always)] +fn get_hash<K, V>(entries: &[Bucket<K, V>]) -> impl Fn(&usize) -> u64 + '_ { + move |&i| entries[i].hash.get() +} + +#[inline] +fn equivalent<'a, K, V, Q: ?Sized + Equivalent<K>>( + key: &'a Q, + entries: &'a [Bucket<K, V>], +) -> impl Fn(&usize) -> bool + 'a { + move |&i| Q::equivalent(key, &entries[i].key) +} + +#[inline] +fn erase_index(table: &mut RawTable<usize>, hash: HashValue, index: usize) { + let erased = table.erase_entry(hash.get(), move |&i| i == index); + debug_assert!(erased); +} + +#[inline] +fn update_index(table: &mut RawTable<usize>, hash: HashValue, old: usize, new: usize) { + let index = table + .get_mut(hash.get(), move |&i| i == old) + .expect("index not found"); + *index = new; +} + +impl<K, V> Clone for IndexMapCore<K, V> +where + K: Clone, + V: Clone, +{ + fn clone(&self) -> Self { + let mut new = Self::new(); + new.clone_from(self); + new + } + + fn clone_from(&mut self, other: &Self) { + let hasher = get_hash(&other.entries); + self.indices.clone_from_with_hasher(&other.indices, hasher); + if self.entries.capacity() < other.entries.len() { + // If we must resize, match the indices capacity. + let additional = other.entries.len() - self.entries.len(); + self.reserve_entries(additional); + } + self.entries.clone_from(&other.entries); + } +} + +impl<K, V> fmt::Debug for IndexMapCore<K, V> +where + K: fmt::Debug, + V: fmt::Debug, +{ + fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result { + f.debug_struct("IndexMapCore") + .field("indices", &raw::DebugIndices(&self.indices)) + .field("entries", &self.entries) + .finish() + } +} + +impl<K, V> Entries for IndexMapCore<K, V> { + type Entry = Bucket<K, V>; + + #[inline] + fn into_entries(self) -> Vec<Self::Entry> { + self.entries + } + + #[inline] + fn as_entries(&self) -> &[Self::Entry] { + &self.entries + } + + #[inline] + fn as_entries_mut(&mut self) -> &mut [Self::Entry] { + &mut self.entries + } + + fn with_entries<F>(&mut self, f: F) + where + F: FnOnce(&mut [Self::Entry]), + { + f(&mut self.entries); + self.rebuild_hash_table(); + } +} + +impl<K, V> IndexMapCore<K, V> { + /// The maximum capacity before the `entries` allocation would exceed `isize::MAX`. + const MAX_ENTRIES_CAPACITY: usize = (isize::MAX as usize) / mem::size_of::<Bucket<K, V>>(); + + #[inline] + pub(crate) const fn new() -> Self { + IndexMapCore { + indices: RawTable::new(), + entries: Vec::new(), + } + } + + #[inline] + pub(crate) fn with_capacity(n: usize) -> Self { + IndexMapCore { + indices: RawTable::with_capacity(n), + entries: Vec::with_capacity(n), + } + } + + #[inline] + pub(crate) fn len(&self) -> usize { + self.indices.len() + } + + #[inline] + pub(crate) fn capacity(&self) -> usize { + Ord::min(self.indices.capacity(), self.entries.capacity()) + } + + pub(crate) fn clear(&mut self) { + self.indices.clear(); + self.entries.clear(); + } + + pub(crate) fn truncate(&mut self, len: usize) { + if len < self.len() { + self.erase_indices(len, self.entries.len()); + self.entries.truncate(len); + } + } + + pub(crate) fn drain<R>(&mut self, range: R) -> Drain<'_, Bucket<K, V>> + where + R: RangeBounds<usize>, + { + let range = simplify_range(range, self.entries.len()); + self.erase_indices(range.start, range.end); + self.entries.drain(range) + } + + #[cfg(feature = "rayon")] + pub(crate) fn par_drain<R>(&mut self, range: R) -> rayon::vec::Drain<'_, Bucket<K, V>> + where + K: Send, + V: Send, + R: RangeBounds<usize>, + { + use rayon::iter::ParallelDrainRange; + let range = simplify_range(range, self.entries.len()); + self.erase_indices(range.start, range.end); + self.entries.par_drain(range) + } + + pub(crate) fn split_off(&mut self, at: usize) -> Self { + assert!(at <= self.entries.len()); + self.erase_indices(at, self.entries.len()); + let entries = self.entries.split_off(at); + + let mut indices = RawTable::with_capacity(entries.len()); + raw::insert_bulk_no_grow(&mut indices, &entries); + Self { indices, entries } + } + + /// Reserve capacity for `additional` more key-value pairs. + pub(crate) fn reserve(&mut self, additional: usize) { + self.indices.reserve(additional, get_hash(&self.entries)); + // Only grow entries if necessary, since we also round up capacity. + if additional > self.entries.capacity() - self.entries.len() { + self.reserve_entries(additional); + } + } + + /// Reserve entries capacity, rounded up to match the indices + fn reserve_entries(&mut self, additional: usize) { + // Use a soft-limit on the maximum capacity, but if the caller explicitly + // requested more, do it and let them have the resulting panic. + let new_capacity = Ord::min(self.indices.capacity(), Self::MAX_ENTRIES_CAPACITY); + let try_add = new_capacity - self.entries.len(); + if try_add > additional && self.entries.try_reserve_exact(try_add).is_ok() { + return; + } + self.entries.reserve_exact(additional); + } + + /// Reserve capacity for `additional` more key-value pairs, without over-allocating. + pub(crate) fn reserve_exact(&mut self, additional: usize) { + self.indices.reserve(additional, get_hash(&self.entries)); + self.entries.reserve_exact(additional); + } + + /// Try to reserve capacity for `additional` more key-value pairs. + pub(crate) fn try_reserve(&mut self, additional: usize) -> Result<(), TryReserveError> { + self.indices + .try_reserve(additional, get_hash(&self.entries)) + .map_err(TryReserveError::from_hashbrown)?; + // Only grow entries if necessary, since we also round up capacity. + if additional > self.entries.capacity() - self.entries.len() { + self.try_reserve_entries(additional) + } else { + Ok(()) + } + } + + /// Try to reserve entries capacity, rounded up to match the indices + fn try_reserve_entries(&mut self, additional: usize) -> Result<(), TryReserveError> { + // Use a soft-limit on the maximum capacity, but if the caller explicitly + // requested more, do it and let them have the resulting error. + let new_capacity = Ord::min(self.indices.capacity(), Self::MAX_ENTRIES_CAPACITY); + let try_add = new_capacity - self.entries.len(); + if try_add > additional && self.entries.try_reserve_exact(try_add).is_ok() { + return Ok(()); + } + self.entries + .try_reserve_exact(additional) + .map_err(TryReserveError::from_alloc) + } + + /// Try to reserve capacity for `additional` more key-value pairs, without over-allocating. + pub(crate) fn try_reserve_exact(&mut self, additional: usize) -> Result<(), TryReserveError> { + self.indices + .try_reserve(additional, get_hash(&self.entries)) + .map_err(TryReserveError::from_hashbrown)?; + self.entries + .try_reserve_exact(additional) + .map_err(TryReserveError::from_alloc) + } + + /// Shrink the capacity of the map with a lower bound + pub(crate) fn shrink_to(&mut self, min_capacity: usize) { + self.indices + .shrink_to(min_capacity, get_hash(&self.entries)); + self.entries.shrink_to(min_capacity); + } + + /// Remove the last key-value pair + pub(crate) fn pop(&mut self) -> Option<(K, V)> { + if let Some(entry) = self.entries.pop() { + let last = self.entries.len(); + erase_index(&mut self.indices, entry.hash, last); + Some((entry.key, entry.value)) + } else { + None + } + } + + /// Append a key-value pair to `entries`, *without* checking whether it already exists. + fn push_entry(&mut self, hash: HashValue, key: K, value: V) { + if self.entries.len() == self.entries.capacity() { + // Reserve our own capacity synced to the indices, + // rather than letting `Vec::push` just double it. + self.reserve_entries(1); + } + self.entries.push(Bucket { hash, key, value }); + } + + /// Return the index in `entries` where an equivalent key can be found + pub(crate) fn get_index_of<Q>(&self, hash: HashValue, key: &Q) -> Option<usize> + where + Q: ?Sized + Equivalent<K>, + { + let eq = equivalent(key, &self.entries); + self.indices.get(hash.get(), eq).copied() + } + + pub(crate) fn insert_full(&mut self, hash: HashValue, key: K, value: V) -> (usize, Option<V>) + where + K: Eq, + { + match self.find_or_insert(hash, &key) { + Ok(i) => (i, Some(mem::replace(&mut self.entries[i].value, value))), + Err(i) => { + debug_assert_eq!(i, self.entries.len()); + self.push_entry(hash, key, value); + (i, None) + } + } + } + + /// Remove an entry by shifting all entries that follow it + pub(crate) fn shift_remove_full<Q>(&mut self, hash: HashValue, key: &Q) -> Option<(usize, K, V)> + where + Q: ?Sized + Equivalent<K>, + { + let eq = equivalent(key, &self.entries); + match self.indices.remove_entry(hash.get(), eq) { + Some(index) => { + let (key, value) = self.shift_remove_finish(index); + Some((index, key, value)) + } + None => None, + } + } + + /// Remove an entry by shifting all entries that follow it + pub(crate) fn shift_remove_index(&mut self, index: usize) -> Option<(K, V)> { + match self.entries.get(index) { + Some(entry) => { + erase_index(&mut self.indices, entry.hash, index); + Some(self.shift_remove_finish(index)) + } + None => None, + } + } + + /// Remove an entry by shifting all entries that follow it + /// + /// The index should already be removed from `self.indices`. + fn shift_remove_finish(&mut self, index: usize) -> (K, V) { + // Correct indices that point to the entries that followed the removed entry. + self.decrement_indices(index + 1, self.entries.len()); + + // Use Vec::remove to actually remove the entry. + let entry = self.entries.remove(index); + (entry.key, entry.value) + } + + /// Decrement all indices in the range `start..end`. + /// + /// The index `start - 1` should not exist in `self.indices`. + /// All entries should still be in their original positions. + fn decrement_indices(&mut self, start: usize, end: usize) { + // Use a heuristic between a full sweep vs. a `find()` for every shifted item. + let shifted_entries = &self.entries[start..end]; + if shifted_entries.len() > self.indices.buckets() / 2 { + // Shift all indices in range. + for i in self.indices_mut() { + if start <= *i && *i < end { + *i -= 1; + } + } + } else { + // Find each entry in range to shift its index. + for (i, entry) in (start..end).zip(shifted_entries) { + update_index(&mut self.indices, entry.hash, i, i - 1); + } + } + } + + /// Increment all indices in the range `start..end`. + /// + /// The index `end` should not exist in `self.indices`. + /// All entries should still be in their original positions. + fn increment_indices(&mut self, start: usize, end: usize) { + // Use a heuristic between a full sweep vs. a `find()` for every shifted item. + let shifted_entries = &self.entries[start..end]; + if shifted_entries.len() > self.indices.buckets() / 2 { + // Shift all indices in range. + for i in self.indices_mut() { + if start <= *i && *i < end { + *i += 1; + } + } + } else { + // Find each entry in range to shift its index, updated in reverse so + // we never have duplicated indices that might have a hash collision. + for (i, entry) in (start..end).zip(shifted_entries).rev() { + update_index(&mut self.indices, entry.hash, i, i + 1); + } + } + } + + pub(super) fn move_index(&mut self, from: usize, to: usize) { + let from_hash = self.entries[from].hash; + if from != to { + // Use a sentinel index so other indices don't collide. + update_index(&mut self.indices, from_hash, from, usize::MAX); + + // Update all other indices and rotate the entry positions. + if from < to { + self.decrement_indices(from + 1, to + 1); + self.entries[from..=to].rotate_left(1); + } else if to < from { + self.increment_indices(to, from); + self.entries[to..=from].rotate_right(1); + } + + // Change the sentinel index to its final position. + update_index(&mut self.indices, from_hash, usize::MAX, to); + } + } + + pub(crate) fn swap_indices(&mut self, a: usize, b: usize) { + // If they're equal and in-bounds, there's nothing to do. + if a == b && a < self.entries.len() { + return; + } + + // We'll get a "nice" bounds-check from indexing `self.entries`, + // and then we expect to find it in the table as well. + let [ref_a, ref_b] = self + .indices + .get_many_mut( + [self.entries[a].hash.get(), self.entries[b].hash.get()], + move |i, &x| if i == 0 { x == a } else { x == b }, + ) + .expect("indices not found"); + + mem::swap(ref_a, ref_b); + self.entries.swap(a, b); + } + + /// Remove an entry by swapping it with the last + pub(crate) fn swap_remove_full<Q>(&mut self, hash: HashValue, key: &Q) -> Option<(usize, K, V)> + where + Q: ?Sized + Equivalent<K>, + { + let eq = equivalent(key, &self.entries); + match self.indices.remove_entry(hash.get(), eq) { + Some(index) => { + let (key, value) = self.swap_remove_finish(index); + Some((index, key, value)) + } + None => None, + } + } + + /// Remove an entry by swapping it with the last + pub(crate) fn swap_remove_index(&mut self, index: usize) -> Option<(K, V)> { + match self.entries.get(index) { + Some(entry) => { + erase_index(&mut self.indices, entry.hash, index); + Some(self.swap_remove_finish(index)) + } + None => None, + } + } + + /// Finish removing an entry by swapping it with the last + /// + /// The index should already be removed from `self.indices`. + fn swap_remove_finish(&mut self, index: usize) -> (K, V) { + // use swap_remove, but then we need to update the index that points + // to the other entry that has to move + let entry = self.entries.swap_remove(index); + + // correct index that points to the entry that had to swap places + if let Some(entry) = self.entries.get(index) { + // was not last element + // examine new element in `index` and find it in indices + let last = self.entries.len(); + update_index(&mut self.indices, entry.hash, last, index); + } + + (entry.key, entry.value) + } + + /// Erase `start..end` from `indices`, and shift `end..` indices down to `start..` + /// + /// All of these items should still be at their original location in `entries`. + /// This is used by `drain`, which will let `Vec::drain` do the work on `entries`. + fn erase_indices(&mut self, start: usize, end: usize) { + let (init, shifted_entries) = self.entries.split_at(end); + let (start_entries, erased_entries) = init.split_at(start); + + let erased = erased_entries.len(); + let shifted = shifted_entries.len(); + let half_capacity = self.indices.buckets() / 2; + + // Use a heuristic between different strategies + if erased == 0 { + // Degenerate case, nothing to do + } else if start + shifted < half_capacity && start < erased { + // Reinsert everything, as there are few kept indices + self.indices.clear(); + + // Reinsert stable indices, then shifted indices + raw::insert_bulk_no_grow(&mut self.indices, start_entries); + raw::insert_bulk_no_grow(&mut self.indices, shifted_entries); + } else if erased + shifted < half_capacity { + // Find each affected index, as there are few to adjust + + // Find erased indices + for (i, entry) in (start..).zip(erased_entries) { + erase_index(&mut self.indices, entry.hash, i); + } + + // Find shifted indices + for ((new, old), entry) in (start..).zip(end..).zip(shifted_entries) { + update_index(&mut self.indices, entry.hash, old, new); + } + } else { + // Sweep the whole table for adjustments + self.erase_indices_sweep(start, end); + } + + debug_assert_eq!(self.indices.len(), start + shifted); + } + + pub(crate) fn retain_in_order<F>(&mut self, mut keep: F) + where + F: FnMut(&mut K, &mut V) -> bool, + { + self.entries + .retain_mut(|entry| keep(&mut entry.key, &mut entry.value)); + if self.entries.len() < self.indices.len() { + self.rebuild_hash_table(); + } + } + + fn rebuild_hash_table(&mut self) { + self.indices.clear(); + raw::insert_bulk_no_grow(&mut self.indices, &self.entries); + } + + pub(crate) fn reverse(&mut self) { + self.entries.reverse(); + + // No need to save hash indices, can easily calculate what they should + // be, given that this is an in-place reversal. + let len = self.entries.len(); + for i in self.indices_mut() { + *i = len - *i - 1; + } + } +} + +/// Entry for an existing key-value pair or a vacant location to +/// insert one. +pub enum Entry<'a, K, V> { + /// Existing slot with equivalent key. + Occupied(OccupiedEntry<'a, K, V>), + /// Vacant slot (no equivalent key in the map). + Vacant(VacantEntry<'a, K, V>), +} + +impl<'a, K, V> Entry<'a, K, V> { + /// Inserts the given default value in the entry if it is vacant and returns a mutable + /// reference to it. Otherwise a mutable reference to an already existent value is returned. + /// + /// Computes in **O(1)** time (amortized average). + pub fn or_insert(self, default: V) -> &'a mut V { + match self { + Entry::Occupied(entry) => entry.into_mut(), + Entry::Vacant(entry) => entry.insert(default), + } + } + + /// Inserts the result of the `call` function in the entry if it is vacant and returns a mutable + /// reference to it. Otherwise a mutable reference to an already existent value is returned. + /// + /// Computes in **O(1)** time (amortized average). + pub fn or_insert_with<F>(self, call: F) -> &'a mut V + where + F: FnOnce() -> V, + { + match self { + Entry::Occupied(entry) => entry.into_mut(), + Entry::Vacant(entry) => entry.insert(call()), + } + } + + /// Inserts the result of the `call` function with a reference to the entry's key if it is + /// vacant, and returns a mutable reference to the new value. Otherwise a mutable reference to + /// an already existent value is returned. + /// + /// Computes in **O(1)** time (amortized average). + pub fn or_insert_with_key<F>(self, call: F) -> &'a mut V + where + F: FnOnce(&K) -> V, + { + match self { + Entry::Occupied(entry) => entry.into_mut(), + Entry::Vacant(entry) => { + let value = call(&entry.key); + entry.insert(value) + } + } + } + + /// Gets a reference to the entry's key, either within the map if occupied, + /// or else the new key that was used to find the entry. + pub fn key(&self) -> &K { + match *self { + Entry::Occupied(ref entry) => entry.key(), + Entry::Vacant(ref entry) => entry.key(), + } + } + + /// Return the index where the key-value pair exists or will be inserted. + pub fn index(&self) -> usize { + match *self { + Entry::Occupied(ref entry) => entry.index(), + Entry::Vacant(ref entry) => entry.index(), + } + } + + /// Modifies the entry if it is occupied. + pub fn and_modify<F>(self, f: F) -> Self + where + F: FnOnce(&mut V), + { + match self { + Entry::Occupied(mut o) => { + f(o.get_mut()); + Entry::Occupied(o) + } + x => x, + } + } + + /// Inserts a default-constructed value in the entry if it is vacant and returns a mutable + /// reference to it. Otherwise a mutable reference to an already existent value is returned. + /// + /// Computes in **O(1)** time (amortized average). + pub fn or_default(self) -> &'a mut V + where + V: Default, + { + match self { + Entry::Occupied(entry) => entry.into_mut(), + Entry::Vacant(entry) => entry.insert(V::default()), + } + } +} + +impl<K: fmt::Debug, V: fmt::Debug> fmt::Debug for Entry<'_, K, V> { + fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result { + match *self { + Entry::Vacant(ref v) => f.debug_tuple(stringify!(Entry)).field(v).finish(), + Entry::Occupied(ref o) => f.debug_tuple(stringify!(Entry)).field(o).finish(), + } + } +} + +pub use self::raw::OccupiedEntry; + +// Extra methods that don't threaten the unsafe encapsulation. +impl<K, V> OccupiedEntry<'_, K, V> { + /// Sets the value of the entry to `value`, and returns the entry's old value. + pub fn insert(&mut self, value: V) -> V { + mem::replace(self.get_mut(), value) + } + + /// Remove the key, value pair stored in the map for this entry, and return the value. + /// + /// **NOTE:** This is equivalent to `.swap_remove()`. + pub fn remove(self) -> V { + self.swap_remove() + } + + /// Remove the key, value pair stored in the map for this entry, and return the value. + /// + /// Like `Vec::swap_remove`, the pair is removed by swapping it with the + /// last element of the map and popping it off. **This perturbs + /// the position of what used to be the last element!** + /// + /// Computes in **O(1)** time (average). + pub fn swap_remove(self) -> V { + self.swap_remove_entry().1 + } + + /// Remove the key, value pair stored in the map for this entry, and return the value. + /// + /// Like `Vec::remove`, the pair is removed by shifting all of the + /// elements that follow it, preserving their relative order. + /// **This perturbs the index of all of those elements!** + /// + /// Computes in **O(n)** time (average). + pub fn shift_remove(self) -> V { + self.shift_remove_entry().1 + } + + /// Remove and return the key, value pair stored in the map for this entry + /// + /// **NOTE:** This is equivalent to `.swap_remove_entry()`. + pub fn remove_entry(self) -> (K, V) { + self.swap_remove_entry() + } +} + +impl<K: fmt::Debug, V: fmt::Debug> fmt::Debug for OccupiedEntry<'_, K, V> { + fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result { + f.debug_struct(stringify!(OccupiedEntry)) + .field("key", self.key()) + .field("value", self.get()) + .finish() + } +} + +/// A view into a vacant entry in a `IndexMap`. +/// It is part of the [`Entry`] enum. +/// +/// [`Entry`]: enum.Entry.html +pub struct VacantEntry<'a, K, V> { + map: &'a mut IndexMapCore<K, V>, + hash: HashValue, + key: K, +} + +impl<'a, K, V> VacantEntry<'a, K, V> { + /// Gets a reference to the key that was used to find the entry. + pub fn key(&self) -> &K { + &self.key + } + + /// Takes ownership of the key, leaving the entry vacant. + pub fn into_key(self) -> K { + self.key + } + + /// Return the index where the key-value pair will be inserted. + pub fn index(&self) -> usize { + self.map.indices.len() + } + + /// Inserts the entry's key and the given value into the map, and returns a mutable reference + /// to the value. + pub fn insert(self, value: V) -> &'a mut V { + let i = self.index(); + let Self { map, hash, key } = self; + map.indices.insert(hash.get(), i, get_hash(&map.entries)); + debug_assert_eq!(i, map.entries.len()); + map.push_entry(hash, key, value); + &mut map.entries[i].value + } +} + +impl<K: fmt::Debug, V> fmt::Debug for VacantEntry<'_, K, V> { + fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result { + f.debug_tuple(stringify!(VacantEntry)) + .field(self.key()) + .finish() + } +} + +#[test] +fn assert_send_sync() { + fn assert_send_sync<T: Send + Sync>() {} + assert_send_sync::<IndexMapCore<i32, i32>>(); + assert_send_sync::<Entry<'_, i32, i32>>(); +} diff --git a/vendor/indexmap/src/map/core/raw.rs b/vendor/indexmap/src/map/core/raw.rs new file mode 100644 index 0000000..be71c9c --- /dev/null +++ b/vendor/indexmap/src/map/core/raw.rs @@ -0,0 +1,194 @@ +#![allow(unsafe_code)] +//! This module encapsulates the `unsafe` access to `hashbrown::raw::RawTable`, +//! mostly in dealing with its bucket "pointers". + +use super::{equivalent, get_hash, Bucket, Entry, HashValue, IndexMapCore, VacantEntry}; +use core::fmt; +use core::mem::replace; +use hashbrown::raw::RawTable; + +type RawBucket = hashbrown::raw::Bucket<usize>; + +/// Inserts many entries into a raw table without reallocating. +/// +/// ***Panics*** if there is not sufficient capacity already. +pub(super) fn insert_bulk_no_grow<K, V>(indices: &mut RawTable<usize>, entries: &[Bucket<K, V>]) { + assert!(indices.capacity() - indices.len() >= entries.len()); + for entry in entries { + // SAFETY: we asserted that sufficient capacity exists for all entries. + unsafe { + indices.insert_no_grow(entry.hash.get(), indices.len()); + } + } +} + +pub(super) struct DebugIndices<'a>(pub &'a RawTable<usize>); +impl fmt::Debug for DebugIndices<'_> { + fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result { + // SAFETY: we're not letting any of the buckets escape this function + let indices = unsafe { self.0.iter().map(|raw_bucket| *raw_bucket.as_ref()) }; + f.debug_list().entries(indices).finish() + } +} + +impl<K, V> IndexMapCore<K, V> { + /// Sweep the whole table to erase indices start..end + pub(super) fn erase_indices_sweep(&mut self, start: usize, end: usize) { + // SAFETY: we're not letting any of the buckets escape this function + unsafe { + let offset = end - start; + for bucket in self.indices.iter() { + let i = bucket.as_mut(); + if *i >= end { + *i -= offset; + } else if *i >= start { + self.indices.erase(bucket); + } + } + } + } + + /// Search for a key in the table and return `Ok(entry_index)` if found. + /// Otherwise, insert the key and return `Err(new_index)`. + /// + /// Note that hashbrown may resize the table to reserve space for insertion, + /// even before checking if it's already present, so this is somewhat biased + /// towards new items. + pub(crate) fn find_or_insert(&mut self, hash: HashValue, key: &K) -> Result<usize, usize> + where + K: Eq, + { + let hash = hash.get(); + let eq = equivalent(key, &self.entries); + let hasher = get_hash(&self.entries); + // SAFETY: We're not mutating between find and read/insert. + unsafe { + match self.indices.find_or_find_insert_slot(hash, eq, hasher) { + Ok(raw_bucket) => Ok(*raw_bucket.as_ref()), + Err(slot) => { + let index = self.indices.len(); + self.indices.insert_in_slot(hash, slot, index); + Err(index) + } + } + } + } + + pub(crate) fn entry(&mut self, hash: HashValue, key: K) -> Entry<'_, K, V> + where + K: Eq, + { + let eq = equivalent(&key, &self.entries); + match self.indices.find(hash.get(), eq) { + // SAFETY: The entry is created with a live raw bucket, at the same time + // we have a &mut reference to the map, so it can not be modified further. + Some(raw_bucket) => Entry::Occupied(OccupiedEntry { + map: self, + raw_bucket, + key, + }), + None => Entry::Vacant(VacantEntry { + map: self, + hash, + key, + }), + } + } + + pub(super) fn indices_mut(&mut self) -> impl Iterator<Item = &mut usize> { + // SAFETY: we're not letting any of the buckets escape this function, + // only the item references that are appropriately bound to `&mut self`. + unsafe { self.indices.iter().map(|bucket| bucket.as_mut()) } + } +} + +/// A view into an occupied entry in a `IndexMap`. +/// It is part of the [`Entry`] enum. +/// +/// [`Entry`]: enum.Entry.html +// SAFETY: The lifetime of the map reference also constrains the raw bucket, +// which is essentially a raw pointer into the map indices. +pub struct OccupiedEntry<'a, K, V> { + map: &'a mut IndexMapCore<K, V>, + raw_bucket: RawBucket, + key: K, +} + +// `hashbrown::raw::Bucket` is only `Send`, not `Sync`. +// SAFETY: `&self` only accesses the bucket to read it. +unsafe impl<K: Sync, V: Sync> Sync for OccupiedEntry<'_, K, V> {} + +// The parent module also adds methods that don't threaten the unsafe encapsulation. +impl<'a, K, V> OccupiedEntry<'a, K, V> { + /// Gets a reference to the entry's key in the map. + /// + /// Note that this is not the key that was used to find the entry. There may be an observable + /// difference if the key type has any distinguishing features outside of `Hash` and `Eq`, like + /// extra fields or the memory address of an allocation. + pub fn key(&self) -> &K { + &self.map.entries[self.index()].key + } + + /// Gets a reference to the entry's value in the map. + pub fn get(&self) -> &V { + &self.map.entries[self.index()].value + } + + /// Gets a mutable reference to the entry's value in the map. + /// + /// If you need a reference which may outlive the destruction of the + /// `Entry` value, see `into_mut`. + pub fn get_mut(&mut self) -> &mut V { + let index = self.index(); + &mut self.map.entries[index].value + } + + /// Put the new key in the occupied entry's key slot + pub(crate) fn replace_key(self) -> K { + let index = self.index(); + let old_key = &mut self.map.entries[index].key; + replace(old_key, self.key) + } + + /// Return the index of the key-value pair + #[inline] + pub fn index(&self) -> usize { + // SAFETY: we have &mut map keep keeping the bucket stable + unsafe { *self.raw_bucket.as_ref() } + } + + /// Converts into a mutable reference to the entry's value in the map, + /// with a lifetime bound to the map itself. + pub fn into_mut(self) -> &'a mut V { + let index = self.index(); + &mut self.map.entries[index].value + } + + /// Remove and return the key, value pair stored in the map for this entry + /// + /// Like `Vec::swap_remove`, the pair is removed by swapping it with the + /// last element of the map and popping it off. **This perturbs + /// the position of what used to be the last element!** + /// + /// Computes in **O(1)** time (average). + pub fn swap_remove_entry(self) -> (K, V) { + // SAFETY: This is safe because it can only happen once (self is consumed) + // and map.indices have not been modified since entry construction + let (index, _slot) = unsafe { self.map.indices.remove(self.raw_bucket) }; + self.map.swap_remove_finish(index) + } + + /// Remove and return the key, value pair stored in the map for this entry + /// + /// Like `Vec::remove`, the pair is removed by shifting all of the + /// elements that follow it, preserving their relative order. + /// **This perturbs the index of all of those elements!** + /// + /// Computes in **O(n)** time (average). + pub fn shift_remove_entry(self) -> (K, V) { + // SAFETY: This is safe because it can only happen once (self is consumed) + // and map.indices have not been modified since entry construction + let (index, _slot) = unsafe { self.map.indices.remove(self.raw_bucket) }; + self.map.shift_remove_finish(index) + } +} diff --git a/vendor/indexmap/src/map/iter.rs b/vendor/indexmap/src/map/iter.rs new file mode 100644 index 0000000..db6e140 --- /dev/null +++ b/vendor/indexmap/src/map/iter.rs @@ -0,0 +1,541 @@ +use super::{Bucket, Entries, IndexMap, Slice}; + +use alloc::vec::{self, Vec}; +use core::fmt; +use core::iter::FusedIterator; +use core::slice; + +impl<'a, K, V, S> IntoIterator for &'a IndexMap<K, V, S> { + type Item = (&'a K, &'a V); + type IntoIter = Iter<'a, K, V>; + + fn into_iter(self) -> Self::IntoIter { + self.iter() + } +} + +impl<'a, K, V, S> IntoIterator for &'a mut IndexMap<K, V, S> { + type Item = (&'a K, &'a mut V); + type IntoIter = IterMut<'a, K, V>; + + fn into_iter(self) -> Self::IntoIter { + self.iter_mut() + } +} + +impl<K, V, S> IntoIterator for IndexMap<K, V, S> { + type Item = (K, V); + type IntoIter = IntoIter<K, V>; + + fn into_iter(self) -> Self::IntoIter { + IntoIter::new(self.into_entries()) + } +} + +/// An iterator over the entries of a `IndexMap`. +/// +/// This `struct` is created by the [`iter`] method on [`IndexMap`]. See its +/// documentation for more. +/// +/// [`iter`]: struct.IndexMap.html#method.iter +/// [`IndexMap`]: struct.IndexMap.html +pub struct Iter<'a, K, V> { + iter: slice::Iter<'a, Bucket<K, V>>, +} + +impl<'a, K, V> Iter<'a, K, V> { + pub(super) fn new(entries: &'a [Bucket<K, V>]) -> Self { + Self { + iter: entries.iter(), + } + } + + /// Returns a slice of the remaining entries in the iterator. + pub fn as_slice(&self) -> &'a Slice<K, V> { + Slice::from_slice(self.iter.as_slice()) + } +} + +impl<'a, K, V> Iterator for Iter<'a, K, V> { + type Item = (&'a K, &'a V); + + iterator_methods!(Bucket::refs); +} + +impl<K, V> DoubleEndedIterator for Iter<'_, K, V> { + double_ended_iterator_methods!(Bucket::refs); +} + +impl<K, V> ExactSizeIterator for Iter<'_, K, V> { + fn len(&self) -> usize { + self.iter.len() + } +} + +impl<K, V> FusedIterator for Iter<'_, K, V> {} + +// FIXME(#26925) Remove in favor of `#[derive(Clone)]` +impl<K, V> Clone for Iter<'_, K, V> { + fn clone(&self) -> Self { + Iter { + iter: self.iter.clone(), + } + } +} + +impl<K: fmt::Debug, V: fmt::Debug> fmt::Debug for Iter<'_, K, V> { + fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result { + f.debug_list().entries(self.clone()).finish() + } +} + +impl<K, V> Default for Iter<'_, K, V> { + fn default() -> Self { + Self { iter: [].iter() } + } +} + +/// A mutable iterator over the entries of a `IndexMap`. +/// +/// This `struct` is created by the [`iter_mut`] method on [`IndexMap`]. See its +/// documentation for more. +/// +/// [`iter_mut`]: struct.IndexMap.html#method.iter_mut +/// [`IndexMap`]: struct.IndexMap.html +pub struct IterMut<'a, K, V> { + iter: slice::IterMut<'a, Bucket<K, V>>, +} + +impl<'a, K, V> IterMut<'a, K, V> { + pub(super) fn new(entries: &'a mut [Bucket<K, V>]) -> Self { + Self { + iter: entries.iter_mut(), + } + } + + /// Returns a slice of the remaining entries in the iterator. + pub fn as_slice(&self) -> &Slice<K, V> { + Slice::from_slice(self.iter.as_slice()) + } + + /// Returns a mutable slice of the remaining entries in the iterator. + /// + /// To avoid creating `&mut` references that alias, this is forced to consume the iterator. + pub fn into_slice(self) -> &'a mut Slice<K, V> { + Slice::from_mut_slice(self.iter.into_slice()) + } +} + +impl<'a, K, V> Iterator for IterMut<'a, K, V> { + type Item = (&'a K, &'a mut V); + + iterator_methods!(Bucket::ref_mut); +} + +impl<K, V> DoubleEndedIterator for IterMut<'_, K, V> { + double_ended_iterator_methods!(Bucket::ref_mut); +} + +impl<K, V> ExactSizeIterator for IterMut<'_, K, V> { + fn len(&self) -> usize { + self.iter.len() + } +} + +impl<K, V> FusedIterator for IterMut<'_, K, V> {} + +impl<K: fmt::Debug, V: fmt::Debug> fmt::Debug for IterMut<'_, K, V> { + fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result { + let iter = self.iter.as_slice().iter().map(Bucket::refs); + f.debug_list().entries(iter).finish() + } +} + +impl<K, V> Default for IterMut<'_, K, V> { + fn default() -> Self { + Self { + iter: [].iter_mut(), + } + } +} + +/// An owning iterator over the entries of a `IndexMap`. +/// +/// This `struct` is created by the [`into_iter`] method on [`IndexMap`] +/// (provided by the `IntoIterator` trait). See its documentation for more. +/// +/// [`into_iter`]: struct.IndexMap.html#method.into_iter +/// [`IndexMap`]: struct.IndexMap.html +pub struct IntoIter<K, V> { + iter: vec::IntoIter<Bucket<K, V>>, +} + +impl<K, V> IntoIter<K, V> { + pub(super) fn new(entries: Vec<Bucket<K, V>>) -> Self { + Self { + iter: entries.into_iter(), + } + } + + /// Returns a slice of the remaining entries in the iterator. + pub fn as_slice(&self) -> &Slice<K, V> { + Slice::from_slice(self.iter.as_slice()) + } + + /// Returns a mutable slice of the remaining entries in the iterator. + pub fn as_mut_slice(&mut self) -> &mut Slice<K, V> { + Slice::from_mut_slice(self.iter.as_mut_slice()) + } +} + +impl<K, V> Iterator for IntoIter<K, V> { + type Item = (K, V); + + iterator_methods!(Bucket::key_value); +} + +impl<K, V> DoubleEndedIterator for IntoIter<K, V> { + double_ended_iterator_methods!(Bucket::key_value); +} + +impl<K, V> ExactSizeIterator for IntoIter<K, V> { + fn len(&self) -> usize { + self.iter.len() + } +} + +impl<K, V> FusedIterator for IntoIter<K, V> {} + +impl<K: fmt::Debug, V: fmt::Debug> fmt::Debug for IntoIter<K, V> { + fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result { + let iter = self.iter.as_slice().iter().map(Bucket::refs); + f.debug_list().entries(iter).finish() + } +} + +impl<K, V> Default for IntoIter<K, V> { + fn default() -> Self { + Self { + iter: Vec::new().into_iter(), + } + } +} + +/// A draining iterator over the entries of a `IndexMap`. +/// +/// This `struct` is created by the [`drain`] method on [`IndexMap`]. See its +/// documentation for more. +/// +/// [`drain`]: struct.IndexMap.html#method.drain +/// [`IndexMap`]: struct.IndexMap.html +pub struct Drain<'a, K, V> { + iter: vec::Drain<'a, Bucket<K, V>>, +} + +impl<'a, K, V> Drain<'a, K, V> { + pub(super) fn new(iter: vec::Drain<'a, Bucket<K, V>>) -> Self { + Self { iter } + } + + /// Returns a slice of the remaining entries in the iterator. + pub fn as_slice(&self) -> &Slice<K, V> { + Slice::from_slice(self.iter.as_slice()) + } +} + +impl<K, V> Iterator for Drain<'_, K, V> { + type Item = (K, V); + + iterator_methods!(Bucket::key_value); +} + +impl<K, V> DoubleEndedIterator for Drain<'_, K, V> { + double_ended_iterator_methods!(Bucket::key_value); +} + +impl<K, V> ExactSizeIterator for Drain<'_, K, V> { + fn len(&self) -> usize { + self.iter.len() + } +} + +impl<K, V> FusedIterator for Drain<'_, K, V> {} + +impl<K: fmt::Debug, V: fmt::Debug> fmt::Debug for Drain<'_, K, V> { + fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result { + let iter = self.iter.as_slice().iter().map(Bucket::refs); + f.debug_list().entries(iter).finish() + } +} + +/// An iterator over the keys of a `IndexMap`. +/// +/// This `struct` is created by the [`keys`] method on [`IndexMap`]. See its +/// documentation for more. +/// +/// [`keys`]: struct.IndexMap.html#method.keys +/// [`IndexMap`]: struct.IndexMap.html +pub struct Keys<'a, K, V> { + iter: slice::Iter<'a, Bucket<K, V>>, +} + +impl<'a, K, V> Keys<'a, K, V> { + pub(super) fn new(entries: &'a [Bucket<K, V>]) -> Self { + Self { + iter: entries.iter(), + } + } +} + +impl<'a, K, V> Iterator for Keys<'a, K, V> { + type Item = &'a K; + + iterator_methods!(Bucket::key_ref); +} + +impl<K, V> DoubleEndedIterator for Keys<'_, K, V> { + double_ended_iterator_methods!(Bucket::key_ref); +} + +impl<K, V> ExactSizeIterator for Keys<'_, K, V> { + fn len(&self) -> usize { + self.iter.len() + } +} + +impl<K, V> FusedIterator for Keys<'_, K, V> {} + +// FIXME(#26925) Remove in favor of `#[derive(Clone)]` +impl<K, V> Clone for Keys<'_, K, V> { + fn clone(&self) -> Self { + Keys { + iter: self.iter.clone(), + } + } +} + +impl<K: fmt::Debug, V> fmt::Debug for Keys<'_, K, V> { + fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result { + f.debug_list().entries(self.clone()).finish() + } +} + +impl<K, V> Default for Keys<'_, K, V> { + fn default() -> Self { + Self { iter: [].iter() } + } +} + +/// An owning iterator over the keys of a `IndexMap`. +/// +/// This `struct` is created by the [`into_keys`] method on [`IndexMap`]. +/// See its documentation for more. +/// +/// [`IndexMap`]: struct.IndexMap.html +/// [`into_keys`]: struct.IndexMap.html#method.into_keys +pub struct IntoKeys<K, V> { + iter: vec::IntoIter<Bucket<K, V>>, +} + +impl<K, V> IntoKeys<K, V> { + pub(super) fn new(entries: Vec<Bucket<K, V>>) -> Self { + Self { + iter: entries.into_iter(), + } + } +} + +impl<K, V> Iterator for IntoKeys<K, V> { + type Item = K; + + iterator_methods!(Bucket::key); +} + +impl<K, V> DoubleEndedIterator for IntoKeys<K, V> { + double_ended_iterator_methods!(Bucket::key); +} + +impl<K, V> ExactSizeIterator for IntoKeys<K, V> { + fn len(&self) -> usize { + self.iter.len() + } +} + +impl<K, V> FusedIterator for IntoKeys<K, V> {} + +impl<K: fmt::Debug, V> fmt::Debug for IntoKeys<K, V> { + fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result { + let iter = self.iter.as_slice().iter().map(Bucket::key_ref); + f.debug_list().entries(iter).finish() + } +} + +impl<K, V> Default for IntoKeys<K, V> { + fn default() -> Self { + Self { + iter: Vec::new().into_iter(), + } + } +} + +/// An iterator over the values of a `IndexMap`. +/// +/// This `struct` is created by the [`values`] method on [`IndexMap`]. See its +/// documentation for more. +/// +/// [`values`]: struct.IndexMap.html#method.values +/// [`IndexMap`]: struct.IndexMap.html +pub struct Values<'a, K, V> { + iter: slice::Iter<'a, Bucket<K, V>>, +} + +impl<'a, K, V> Values<'a, K, V> { + pub(super) fn new(entries: &'a [Bucket<K, V>]) -> Self { + Self { + iter: entries.iter(), + } + } +} + +impl<'a, K, V> Iterator for Values<'a, K, V> { + type Item = &'a V; + + iterator_methods!(Bucket::value_ref); +} + +impl<K, V> DoubleEndedIterator for Values<'_, K, V> { + double_ended_iterator_methods!(Bucket::value_ref); +} + +impl<K, V> ExactSizeIterator for Values<'_, K, V> { + fn len(&self) -> usize { + self.iter.len() + } +} + +impl<K, V> FusedIterator for Values<'_, K, V> {} + +// FIXME(#26925) Remove in favor of `#[derive(Clone)]` +impl<K, V> Clone for Values<'_, K, V> { + fn clone(&self) -> Self { + Values { + iter: self.iter.clone(), + } + } +} + +impl<K, V: fmt::Debug> fmt::Debug for Values<'_, K, V> { + fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result { + f.debug_list().entries(self.clone()).finish() + } +} + +impl<K, V> Default for Values<'_, K, V> { + fn default() -> Self { + Self { iter: [].iter() } + } +} + +/// A mutable iterator over the values of a `IndexMap`. +/// +/// This `struct` is created by the [`values_mut`] method on [`IndexMap`]. See its +/// documentation for more. +/// +/// [`values_mut`]: struct.IndexMap.html#method.values_mut +/// [`IndexMap`]: struct.IndexMap.html +pub struct ValuesMut<'a, K, V> { + iter: slice::IterMut<'a, Bucket<K, V>>, +} + +impl<'a, K, V> ValuesMut<'a, K, V> { + pub(super) fn new(entries: &'a mut [Bucket<K, V>]) -> Self { + Self { + iter: entries.iter_mut(), + } + } +} + +impl<'a, K, V> Iterator for ValuesMut<'a, K, V> { + type Item = &'a mut V; + + iterator_methods!(Bucket::value_mut); +} + +impl<K, V> DoubleEndedIterator for ValuesMut<'_, K, V> { + double_ended_iterator_methods!(Bucket::value_mut); +} + +impl<K, V> ExactSizeIterator for ValuesMut<'_, K, V> { + fn len(&self) -> usize { + self.iter.len() + } +} + +impl<K, V> FusedIterator for ValuesMut<'_, K, V> {} + +impl<K, V: fmt::Debug> fmt::Debug for ValuesMut<'_, K, V> { + fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result { + let iter = self.iter.as_slice().iter().map(Bucket::value_ref); + f.debug_list().entries(iter).finish() + } +} + +impl<K, V> Default for ValuesMut<'_, K, V> { + fn default() -> Self { + Self { + iter: [].iter_mut(), + } + } +} + +/// An owning iterator over the values of a `IndexMap`. +/// +/// This `struct` is created by the [`into_values`] method on [`IndexMap`]. +/// See its documentation for more. +/// +/// [`IndexMap`]: struct.IndexMap.html +/// [`into_values`]: struct.IndexMap.html#method.into_values +pub struct IntoValues<K, V> { + iter: vec::IntoIter<Bucket<K, V>>, +} + +impl<K, V> IntoValues<K, V> { + pub(super) fn new(entries: Vec<Bucket<K, V>>) -> Self { + Self { + iter: entries.into_iter(), + } + } +} + +impl<K, V> Iterator for IntoValues<K, V> { + type Item = V; + + iterator_methods!(Bucket::value); +} + +impl<K, V> DoubleEndedIterator for IntoValues<K, V> { + double_ended_iterator_methods!(Bucket::value); +} + +impl<K, V> ExactSizeIterator for IntoValues<K, V> { + fn len(&self) -> usize { + self.iter.len() + } +} + +impl<K, V> FusedIterator for IntoValues<K, V> {} + +impl<K, V: fmt::Debug> fmt::Debug for IntoValues<K, V> { + fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result { + let iter = self.iter.as_slice().iter().map(Bucket::value_ref); + f.debug_list().entries(iter).finish() + } +} + +impl<K, V> Default for IntoValues<K, V> { + fn default() -> Self { + Self { + iter: Vec::new().into_iter(), + } + } +} diff --git a/vendor/indexmap/src/map/serde_seq.rs b/vendor/indexmap/src/map/serde_seq.rs new file mode 100644 index 0000000..f10aa57 --- /dev/null +++ b/vendor/indexmap/src/map/serde_seq.rs @@ -0,0 +1,138 @@ +//! Functions to serialize and deserialize an `IndexMap` as an ordered sequence. +//! +//! The default `serde` implementation serializes `IndexMap` as a normal map, +//! but there is no guarantee that serialization formats will preserve the order +//! of the key-value pairs. This module serializes `IndexMap` as a sequence of +//! `(key, value)` elements instead, in order. +//! +//! This module may be used in a field attribute for derived implementations: +//! +//! ``` +//! # use indexmap::IndexMap; +//! # use serde_derive::{Deserialize, Serialize}; +//! #[derive(Deserialize, Serialize)] +//! struct Data { +//! #[serde(with = "indexmap::map::serde_seq")] +//! map: IndexMap<i32, u64>, +//! // ... +//! } +//! ``` + +use serde::de::{Deserialize, Deserializer, SeqAccess, Visitor}; +use serde::ser::{Serialize, Serializer}; + +use core::fmt::{self, Formatter}; +use core::hash::{BuildHasher, Hash}; +use core::marker::PhantomData; + +use crate::map::Slice as MapSlice; +use crate::set::Slice as SetSlice; +use crate::IndexMap; + +/// Serializes a `map::Slice` as an ordered sequence. +/// +/// This behaves like [`crate::map::serde_seq`] for `IndexMap`, serializing a sequence +/// of `(key, value)` pairs, rather than as a map that might not preserve order. +impl<K, V> Serialize for MapSlice<K, V> +where + K: Serialize, + V: Serialize, +{ + fn serialize<T>(&self, serializer: T) -> Result<T::Ok, T::Error> + where + T: Serializer, + { + serializer.collect_seq(self) + } +} + +/// Serializes a `set::Slice` as an ordered sequence. +impl<T> Serialize for SetSlice<T> +where + T: Serialize, +{ + fn serialize<Se>(&self, serializer: Se) -> Result<Se::Ok, Se::Error> + where + Se: Serializer, + { + serializer.collect_seq(self) + } +} + +/// Serializes an `IndexMap` as an ordered sequence. +/// +/// This function may be used in a field attribute for deriving `Serialize`: +/// +/// ``` +/// # use indexmap::IndexMap; +/// # use serde_derive::Serialize; +/// #[derive(Serialize)] +/// struct Data { +/// #[serde(serialize_with = "indexmap::map::serde_seq::serialize")] +/// map: IndexMap<i32, u64>, +/// // ... +/// } +/// ``` +pub fn serialize<K, V, S, T>(map: &IndexMap<K, V, S>, serializer: T) -> Result<T::Ok, T::Error> +where + K: Serialize + Hash + Eq, + V: Serialize, + S: BuildHasher, + T: Serializer, +{ + serializer.collect_seq(map) +} + +/// Visitor to deserialize a *sequenced* `IndexMap` +struct SeqVisitor<K, V, S>(PhantomData<(K, V, S)>); + +impl<'de, K, V, S> Visitor<'de> for SeqVisitor<K, V, S> +where + K: Deserialize<'de> + Eq + Hash, + V: Deserialize<'de>, + S: Default + BuildHasher, +{ + type Value = IndexMap<K, V, S>; + + fn expecting(&self, formatter: &mut Formatter<'_>) -> fmt::Result { + write!(formatter, "a sequenced map") + } + + fn visit_seq<A>(self, mut seq: A) -> Result<Self::Value, A::Error> + where + A: SeqAccess<'de>, + { + let capacity = seq.size_hint().unwrap_or(0); + let mut map = IndexMap::with_capacity_and_hasher(capacity, S::default()); + + while let Some((key, value)) = seq.next_element()? { + map.insert(key, value); + } + + Ok(map) + } +} + +/// Deserializes an `IndexMap` from an ordered sequence. +/// +/// This function may be used in a field attribute for deriving `Deserialize`: +/// +/// ``` +/// # use indexmap::IndexMap; +/// # use serde_derive::Deserialize; +/// #[derive(Deserialize)] +/// struct Data { +/// #[serde(deserialize_with = "indexmap::map::serde_seq::deserialize")] +/// map: IndexMap<i32, u64>, +/// // ... +/// } +/// ``` +pub fn deserialize<'de, D, K, V, S>(deserializer: D) -> Result<IndexMap<K, V, S>, D::Error> +where + D: Deserializer<'de>, + K: Deserialize<'de> + Eq + Hash, + V: Deserialize<'de>, + S: Default + BuildHasher, +{ + deserializer.deserialize_seq(SeqVisitor(PhantomData)) +} diff --git a/vendor/indexmap/src/map/slice.rs b/vendor/indexmap/src/map/slice.rs new file mode 100644 index 0000000..9fb876f --- /dev/null +++ b/vendor/indexmap/src/map/slice.rs @@ -0,0 +1,471 @@ +use super::{ + Bucket, Entries, IndexMap, IntoIter, IntoKeys, IntoValues, Iter, IterMut, Keys, Values, + ValuesMut, +}; +use crate::util::try_simplify_range; + +use alloc::boxed::Box; +use alloc::vec::Vec; +use core::cmp::Ordering; +use core::fmt; +use core::hash::{Hash, Hasher}; +use core::ops::{self, Bound, Index, IndexMut, RangeBounds}; + +/// A dynamically-sized slice of key-value pairs in an `IndexMap`. +/// +/// This supports indexed operations much like a `[(K, V)]` slice, +/// but not any hashed operations on the map keys. +/// +/// Unlike `IndexMap`, `Slice` does consider the order for `PartialEq` +/// and `Eq`, and it also implements `PartialOrd`, `Ord`, and `Hash`. +#[repr(transparent)] +pub struct Slice<K, V> { + pub(crate) entries: [Bucket<K, V>], +} + +// SAFETY: `Slice<K, V>` is a transparent wrapper around `[Bucket<K, V>]`, +// and reference lifetimes are bound together in function signatures. +#[allow(unsafe_code)] +impl<K, V> Slice<K, V> { + pub(super) fn from_slice(entries: &[Bucket<K, V>]) -> &Self { + unsafe { &*(entries as *const [Bucket<K, V>] as *const Self) } + } + + pub(super) fn from_mut_slice(entries: &mut [Bucket<K, V>]) -> &mut Self { + unsafe { &mut *(entries as *mut [Bucket<K, V>] as *mut Self) } + } + + pub(super) fn from_boxed(entries: Box<[Bucket<K, V>]>) -> Box<Self> { + unsafe { Box::from_raw(Box::into_raw(entries) as *mut Self) } + } + + fn into_boxed(self: Box<Self>) -> Box<[Bucket<K, V>]> { + unsafe { Box::from_raw(Box::into_raw(self) as *mut [Bucket<K, V>]) } + } +} + +impl<K, V> Slice<K, V> { + pub(crate) fn into_entries(self: Box<Self>) -> Vec<Bucket<K, V>> { + self.into_boxed().into_vec() + } + + /// Return the number of key-value pairs in the map slice. + #[inline] + pub fn len(&self) -> usize { + self.entries.len() + } + + /// Returns true if the map slice contains no elements. + #[inline] + pub fn is_empty(&self) -> bool { + self.entries.is_empty() + } + + /// Get a key-value pair by index. + /// + /// Valid indices are *0 <= index < self.len()* + pub fn get_index(&self, index: usize) -> Option<(&K, &V)> { + self.entries.get(index).map(Bucket::refs) + } + + /// Get a key-value pair by index, with mutable access to the value. + /// + /// Valid indices are *0 <= index < self.len()* + pub fn get_index_mut(&mut self, index: usize) -> Option<(&K, &mut V)> { + self.entries.get_mut(index).map(Bucket::ref_mut) + } + + /// Returns a slice of key-value pairs in the given range of indices. + /// + /// Valid indices are *0 <= index < self.len()* + pub fn get_range<R: RangeBounds<usize>>(&self, range: R) -> Option<&Self> { + let range = try_simplify_range(range, self.entries.len())?; + self.entries.get(range).map(Slice::from_slice) + } + + /// Returns a mutable slice of key-value pairs in the given range of indices. + /// + /// Valid indices are *0 <= index < self.len()* + pub fn get_range_mut<R: RangeBounds<usize>>(&mut self, range: R) -> Option<&mut Self> { + let range = try_simplify_range(range, self.entries.len())?; + self.entries.get_mut(range).map(Slice::from_mut_slice) + } + + /// Get the first key-value pair. + pub fn first(&self) -> Option<(&K, &V)> { + self.entries.first().map(Bucket::refs) + } + + /// Get the first key-value pair, with mutable access to the value. + pub fn first_mut(&mut self) -> Option<(&K, &mut V)> { + self.entries.first_mut().map(Bucket::ref_mut) + } + + /// Get the last key-value pair. + pub fn last(&self) -> Option<(&K, &V)> { + self.entries.last().map(Bucket::refs) + } + + /// Get the last key-value pair, with mutable access to the value. + pub fn last_mut(&mut self) -> Option<(&K, &mut V)> { + self.entries.last_mut().map(Bucket::ref_mut) + } + + /// Divides one slice into two at an index. + /// + /// ***Panics*** if `index > len`. + pub fn split_at(&self, index: usize) -> (&Self, &Self) { + let (first, second) = self.entries.split_at(index); + (Self::from_slice(first), Self::from_slice(second)) + } + + /// Divides one mutable slice into two at an index. + /// + /// ***Panics*** if `index > len`. + pub fn split_at_mut(&mut self, index: usize) -> (&mut Self, &mut Self) { + let (first, second) = self.entries.split_at_mut(index); + (Self::from_mut_slice(first), Self::from_mut_slice(second)) + } + + /// Returns the first key-value pair and the rest of the slice, + /// or `None` if it is empty. + pub fn split_first(&self) -> Option<((&K, &V), &Self)> { + if let [first, rest @ ..] = &self.entries { + Some((first.refs(), Self::from_slice(rest))) + } else { + None + } + } + + /// Returns the first key-value pair and the rest of the slice, + /// with mutable access to the value, or `None` if it is empty. + pub fn split_first_mut(&mut self) -> Option<((&K, &mut V), &mut Self)> { + if let [first, rest @ ..] = &mut self.entries { + Some((first.ref_mut(), Self::from_mut_slice(rest))) + } else { + None + } + } + + /// Returns the last key-value pair and the rest of the slice, + /// or `None` if it is empty. + pub fn split_last(&self) -> Option<((&K, &V), &Self)> { + if let [rest @ .., last] = &self.entries { + Some((last.refs(), Self::from_slice(rest))) + } else { + None + } + } + + /// Returns the last key-value pair and the rest of the slice, + /// with mutable access to the value, or `None` if it is empty. + pub fn split_last_mut(&mut self) -> Option<((&K, &mut V), &mut Self)> { + if let [rest @ .., last] = &mut self.entries { + Some((last.ref_mut(), Self::from_mut_slice(rest))) + } else { + None + } + } + + /// Return an iterator over the key-value pairs of the map slice. + pub fn iter(&self) -> Iter<'_, K, V> { + Iter::new(&self.entries) + } + + /// Return an iterator over the key-value pairs of the map slice. + pub fn iter_mut(&mut self) -> IterMut<'_, K, V> { + IterMut::new(&mut self.entries) + } + + /// Return an iterator over the keys of the map slice. + pub fn keys(&self) -> Keys<'_, K, V> { + Keys::new(&self.entries) + } + + /// Return an owning iterator over the keys of the map slice. + pub fn into_keys(self: Box<Self>) -> IntoKeys<K, V> { + IntoKeys::new(self.into_entries()) + } + + /// Return an iterator over the values of the map slice. + pub fn values(&self) -> Values<'_, K, V> { + Values::new(&self.entries) + } + + /// Return an iterator over mutable references to the the values of the map slice. + pub fn values_mut(&mut self) -> ValuesMut<'_, K, V> { + ValuesMut::new(&mut self.entries) + } + + /// Return an owning iterator over the values of the map slice. + pub fn into_values(self: Box<Self>) -> IntoValues<K, V> { + IntoValues::new(self.into_entries()) + } +} + +impl<'a, K, V> IntoIterator for &'a Slice<K, V> { + type IntoIter = Iter<'a, K, V>; + type Item = (&'a K, &'a V); + + fn into_iter(self) -> Self::IntoIter { + self.iter() + } +} + +impl<'a, K, V> IntoIterator for &'a mut Slice<K, V> { + type IntoIter = IterMut<'a, K, V>; + type Item = (&'a K, &'a mut V); + + fn into_iter(self) -> Self::IntoIter { + self.iter_mut() + } +} + +impl<K, V> IntoIterator for Box<Slice<K, V>> { + type IntoIter = IntoIter<K, V>; + type Item = (K, V); + + fn into_iter(self) -> Self::IntoIter { + IntoIter::new(self.into_entries()) + } +} + +impl<K, V> Default for &'_ Slice<K, V> { + fn default() -> Self { + Slice::from_slice(&[]) + } +} + +impl<K, V> Default for &'_ mut Slice<K, V> { + fn default() -> Self { + Slice::from_mut_slice(&mut []) + } +} + +impl<K, V> Default for Box<Slice<K, V>> { + fn default() -> Self { + Slice::from_boxed(Box::default()) + } +} + +impl<K: Clone, V: Clone> Clone for Box<Slice<K, V>> { + fn clone(&self) -> Self { + Slice::from_boxed(self.entries.to_vec().into_boxed_slice()) + } +} + +impl<K: Copy, V: Copy> From<&Slice<K, V>> for Box<Slice<K, V>> { + fn from(slice: &Slice<K, V>) -> Self { + Slice::from_boxed(Box::from(&slice.entries)) + } +} + +impl<K: fmt::Debug, V: fmt::Debug> fmt::Debug for Slice<K, V> { + fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result { + f.debug_list().entries(self).finish() + } +} + +impl<K: PartialEq, V: PartialEq> PartialEq for Slice<K, V> { + fn eq(&self, other: &Self) -> bool { + self.len() == other.len() && self.iter().eq(other) + } +} + +impl<K: Eq, V: Eq> Eq for Slice<K, V> {} + +impl<K: PartialOrd, V: PartialOrd> PartialOrd for Slice<K, V> { + fn partial_cmp(&self, other: &Self) -> Option<Ordering> { + self.iter().partial_cmp(other) + } +} + +impl<K: Ord, V: Ord> Ord for Slice<K, V> { + fn cmp(&self, other: &Self) -> Ordering { + self.iter().cmp(other) + } +} + +impl<K: Hash, V: Hash> Hash for Slice<K, V> { + fn hash<H: Hasher>(&self, state: &mut H) { + self.len().hash(state); + for (key, value) in self { + key.hash(state); + value.hash(state); + } + } +} + +impl<K, V> Index<usize> for Slice<K, V> { + type Output = V; + + fn index(&self, index: usize) -> &V { + &self.entries[index].value + } +} + +impl<K, V> IndexMut<usize> for Slice<K, V> { + fn index_mut(&mut self, index: usize) -> &mut V { + &mut self.entries[index].value + } +} + +// We can't have `impl<I: RangeBounds<usize>> Index<I>` because that conflicts +// both upstream with `Index<usize>` and downstream with `Index<&Q>`. +// Instead, we repeat the implementations for all the core range types. +macro_rules! impl_index { + ($($range:ty),*) => {$( + impl<K, V, S> Index<$range> for IndexMap<K, V, S> { + type Output = Slice<K, V>; + + fn index(&self, range: $range) -> &Self::Output { + Slice::from_slice(&self.as_entries()[range]) + } + } + + impl<K, V, S> IndexMut<$range> for IndexMap<K, V, S> { + fn index_mut(&mut self, range: $range) -> &mut Self::Output { + Slice::from_mut_slice(&mut self.as_entries_mut()[range]) + } + } + + impl<K, V> Index<$range> for Slice<K, V> { + type Output = Slice<K, V>; + + fn index(&self, range: $range) -> &Self { + Self::from_slice(&self.entries[range]) + } + } + + impl<K, V> IndexMut<$range> for Slice<K, V> { + fn index_mut(&mut self, range: $range) -> &mut Self { + Self::from_mut_slice(&mut self.entries[range]) + } + } + )*} +} +impl_index!( + ops::Range<usize>, + ops::RangeFrom<usize>, + ops::RangeFull, + ops::RangeInclusive<usize>, + ops::RangeTo<usize>, + ops::RangeToInclusive<usize>, + (Bound<usize>, Bound<usize>) +); + +#[cfg(test)] +mod tests { + use super::*; + use alloc::vec::Vec; + + #[test] + fn slice_index() { + fn check( + vec_slice: &[(i32, i32)], + map_slice: &Slice<i32, i32>, + sub_slice: &Slice<i32, i32>, + ) { + assert_eq!(map_slice as *const _, sub_slice as *const _); + itertools::assert_equal( + vec_slice.iter().copied(), + map_slice.iter().map(|(&k, &v)| (k, v)), + ); + itertools::assert_equal(vec_slice.iter().map(|(k, _)| k), map_slice.keys()); + itertools::assert_equal(vec_slice.iter().map(|(_, v)| v), map_slice.values()); + } + + let vec: Vec<(i32, i32)> = (0..10).map(|i| (i, i * i)).collect(); + let map: IndexMap<i32, i32> = vec.iter().cloned().collect(); + let slice = map.as_slice(); + + // RangeFull + check(&vec[..], &map[..], &slice[..]); + + for i in 0usize..10 { + // Index + assert_eq!(vec[i].1, map[i]); + assert_eq!(vec[i].1, slice[i]); + assert_eq!(map[&(i as i32)], map[i]); + assert_eq!(map[&(i as i32)], slice[i]); + + // RangeFrom + check(&vec[i..], &map[i..], &slice[i..]); + + // RangeTo + check(&vec[..i], &map[..i], &slice[..i]); + + // RangeToInclusive + check(&vec[..=i], &map[..=i], &slice[..=i]); + + // (Bound<usize>, Bound<usize>) + let bounds = (Bound::Excluded(i), Bound::Unbounded); + check(&vec[i + 1..], &map[bounds], &slice[bounds]); + + for j in i..=10 { + // Range + check(&vec[i..j], &map[i..j], &slice[i..j]); + } + + for j in i..10 { + // RangeInclusive + check(&vec[i..=j], &map[i..=j], &slice[i..=j]); + } + } + } + + #[test] + fn slice_index_mut() { + fn check_mut( + vec_slice: &[(i32, i32)], + map_slice: &mut Slice<i32, i32>, + sub_slice: &mut Slice<i32, i32>, + ) { + assert_eq!(map_slice, sub_slice); + itertools::assert_equal( + vec_slice.iter().copied(), + map_slice.iter_mut().map(|(&k, &mut v)| (k, v)), + ); + itertools::assert_equal( + vec_slice.iter().map(|&(_, v)| v), + map_slice.values_mut().map(|&mut v| v), + ); + } + + let vec: Vec<(i32, i32)> = (0..10).map(|i| (i, i * i)).collect(); + let mut map: IndexMap<i32, i32> = vec.iter().cloned().collect(); + let mut map2 = map.clone(); + let slice = map2.as_mut_slice(); + + // RangeFull + check_mut(&vec[..], &mut map[..], &mut slice[..]); + + for i in 0usize..10 { + // IndexMut + assert_eq!(&mut map[i], &mut slice[i]); + + // RangeFrom + check_mut(&vec[i..], &mut map[i..], &mut slice[i..]); + + // RangeTo + check_mut(&vec[..i], &mut map[..i], &mut slice[..i]); + + // RangeToInclusive + check_mut(&vec[..=i], &mut map[..=i], &mut slice[..=i]); + + // (Bound<usize>, Bound<usize>) + let bounds = (Bound::Excluded(i), Bound::Unbounded); + check_mut(&vec[i + 1..], &mut map[bounds], &mut slice[bounds]); + + for j in i..=10 { + // Range + check_mut(&vec[i..j], &mut map[i..j], &mut slice[i..j]); + } + + for j in i..10 { + // RangeInclusive + check_mut(&vec[i..=j], &mut map[i..=j], &mut slice[i..=j]); + } + } + } +} diff --git a/vendor/indexmap/src/map/tests.rs b/vendor/indexmap/src/map/tests.rs new file mode 100644 index 0000000..f273d71 --- /dev/null +++ b/vendor/indexmap/src/map/tests.rs @@ -0,0 +1,449 @@ +use super::*; +use std::string::String; + +#[test] +fn it_works() { + let mut map = IndexMap::new(); + assert_eq!(map.is_empty(), true); + map.insert(1, ()); + map.insert(1, ()); + assert_eq!(map.len(), 1); + assert!(map.get(&1).is_some()); + assert_eq!(map.is_empty(), false); +} + +#[test] +fn new() { + let map = IndexMap::<String, String>::new(); + println!("{:?}", map); + assert_eq!(map.capacity(), 0); + assert_eq!(map.len(), 0); + assert_eq!(map.is_empty(), true); +} + +#[test] +fn insert() { + let insert = [0, 4, 2, 12, 8, 7, 11, 5]; + let not_present = [1, 3, 6, 9, 10]; + let mut map = IndexMap::with_capacity(insert.len()); + + for (i, &elt) in insert.iter().enumerate() { + assert_eq!(map.len(), i); + map.insert(elt, elt); + assert_eq!(map.len(), i + 1); + assert_eq!(map.get(&elt), Some(&elt)); + assert_eq!(map[&elt], elt); + } + println!("{:?}", map); + + for &elt in ¬_present { + assert!(map.get(&elt).is_none()); + } +} + +#[test] +fn insert_full() { + let insert = vec![9, 2, 7, 1, 4, 6, 13]; + let present = vec![1, 6, 2]; + let mut map = IndexMap::with_capacity(insert.len()); + + for (i, &elt) in insert.iter().enumerate() { + assert_eq!(map.len(), i); + let (index, existing) = map.insert_full(elt, elt); + assert_eq!(existing, None); + assert_eq!(Some(index), map.get_full(&elt).map(|x| x.0)); + assert_eq!(map.len(), i + 1); + } + + let len = map.len(); + for &elt in &present { + let (index, existing) = map.insert_full(elt, elt); + assert_eq!(existing, Some(elt)); + assert_eq!(Some(index), map.get_full(&elt).map(|x| x.0)); + assert_eq!(map.len(), len); + } +} + +#[test] +fn insert_2() { + let mut map = IndexMap::with_capacity(16); + + let mut keys = vec![]; + keys.extend(0..16); + keys.extend(if cfg!(miri) { 32..64 } else { 128..267 }); + + for &i in &keys { + let old_map = map.clone(); + map.insert(i, ()); + for key in old_map.keys() { + if map.get(key).is_none() { + println!("old_map: {:?}", old_map); + println!("map: {:?}", map); + panic!("did not find {} in map", key); + } + } + } + + for &i in &keys { + assert!(map.get(&i).is_some(), "did not find {}", i); + } +} + +#[test] +fn insert_order() { + let insert = [0, 4, 2, 12, 8, 7, 11, 5, 3, 17, 19, 22, 23]; + let mut map = IndexMap::new(); + + for &elt in &insert { + map.insert(elt, ()); + } + + assert_eq!(map.keys().count(), map.len()); + assert_eq!(map.keys().count(), insert.len()); + for (a, b) in insert.iter().zip(map.keys()) { + assert_eq!(a, b); + } + for (i, k) in (0..insert.len()).zip(map.keys()) { + assert_eq!(map.get_index(i).unwrap().0, k); + } +} + +#[test] +fn grow() { + let insert = [0, 4, 2, 12, 8, 7, 11]; + let not_present = [1, 3, 6, 9, 10]; + let mut map = IndexMap::with_capacity(insert.len()); + + for (i, &elt) in insert.iter().enumerate() { + assert_eq!(map.len(), i); + map.insert(elt, elt); + assert_eq!(map.len(), i + 1); + assert_eq!(map.get(&elt), Some(&elt)); + assert_eq!(map[&elt], elt); + } + + println!("{:?}", map); + for &elt in &insert { + map.insert(elt * 10, elt); + } + for &elt in &insert { + map.insert(elt * 100, elt); + } + for (i, &elt) in insert.iter().cycle().enumerate().take(100) { + map.insert(elt * 100 + i as i32, elt); + } + println!("{:?}", map); + for &elt in ¬_present { + assert!(map.get(&elt).is_none()); + } +} + +#[test] +fn reserve() { + let mut map = IndexMap::<usize, usize>::new(); + assert_eq!(map.capacity(), 0); + map.reserve(100); + let capacity = map.capacity(); + assert!(capacity >= 100); + for i in 0..capacity { + assert_eq!(map.len(), i); + map.insert(i, i * i); + assert_eq!(map.len(), i + 1); + assert_eq!(map.capacity(), capacity); + assert_eq!(map.get(&i), Some(&(i * i))); + } + map.insert(capacity, std::usize::MAX); + assert_eq!(map.len(), capacity + 1); + assert!(map.capacity() > capacity); + assert_eq!(map.get(&capacity), Some(&std::usize::MAX)); +} + +#[test] +fn try_reserve() { + let mut map = IndexMap::<usize, usize>::new(); + assert_eq!(map.capacity(), 0); + assert_eq!(map.try_reserve(100), Ok(())); + assert!(map.capacity() >= 100); + assert!(map.try_reserve(usize::MAX).is_err()); +} + +#[test] +fn shrink_to_fit() { + let mut map = IndexMap::<usize, usize>::new(); + assert_eq!(map.capacity(), 0); + for i in 0..100 { + assert_eq!(map.len(), i); + map.insert(i, i * i); + assert_eq!(map.len(), i + 1); + assert!(map.capacity() >= i + 1); + assert_eq!(map.get(&i), Some(&(i * i))); + map.shrink_to_fit(); + assert_eq!(map.len(), i + 1); + assert_eq!(map.capacity(), i + 1); + assert_eq!(map.get(&i), Some(&(i * i))); + } +} + +#[test] +fn remove() { + let insert = [0, 4, 2, 12, 8, 7, 11, 5, 3, 17, 19, 22, 23]; + let mut map = IndexMap::new(); + + for &elt in &insert { + map.insert(elt, elt); + } + + assert_eq!(map.keys().count(), map.len()); + assert_eq!(map.keys().count(), insert.len()); + for (a, b) in insert.iter().zip(map.keys()) { + assert_eq!(a, b); + } + + let remove_fail = [99, 77]; + let remove = [4, 12, 8, 7]; + + for &key in &remove_fail { + assert!(map.swap_remove_full(&key).is_none()); + } + println!("{:?}", map); + for &key in &remove { + //println!("{:?}", map); + let index = map.get_full(&key).unwrap().0; + assert_eq!(map.swap_remove_full(&key), Some((index, key, key))); + } + println!("{:?}", map); + + for key in &insert { + assert_eq!(map.get(key).is_some(), !remove.contains(key)); + } + assert_eq!(map.len(), insert.len() - remove.len()); + assert_eq!(map.keys().count(), insert.len() - remove.len()); +} + +#[test] +fn remove_to_empty() { + let mut map = indexmap! { 0 => 0, 4 => 4, 5 => 5 }; + map.swap_remove(&5).unwrap(); + map.swap_remove(&4).unwrap(); + map.swap_remove(&0).unwrap(); + assert!(map.is_empty()); +} + +#[test] +fn swap_remove_index() { + let insert = [0, 4, 2, 12, 8, 7, 11, 5, 3, 17, 19, 22, 23]; + let mut map = IndexMap::new(); + + for &elt in &insert { + map.insert(elt, elt * 2); + } + + let mut vector = insert.to_vec(); + let remove_sequence = &[3, 3, 10, 4, 5, 4, 3, 0, 1]; + + // check that the same swap remove sequence on vec and map + // have the same result. + for &rm in remove_sequence { + let out_vec = vector.swap_remove(rm); + let (out_map, _) = map.swap_remove_index(rm).unwrap(); + assert_eq!(out_vec, out_map); + } + assert_eq!(vector.len(), map.len()); + for (a, b) in vector.iter().zip(map.keys()) { + assert_eq!(a, b); + } +} + +#[test] +fn partial_eq_and_eq() { + let mut map_a = IndexMap::new(); + map_a.insert(1, "1"); + map_a.insert(2, "2"); + let mut map_b = map_a.clone(); + assert_eq!(map_a, map_b); + map_b.swap_remove(&1); + assert_ne!(map_a, map_b); + + let map_c: IndexMap<_, String> = map_b.into_iter().map(|(k, v)| (k, v.into())).collect(); + assert_ne!(map_a, map_c); + assert_ne!(map_c, map_a); +} + +#[test] +fn extend() { + let mut map = IndexMap::new(); + map.extend(vec![(&1, &2), (&3, &4)]); + map.extend(vec![(5, 6)]); + assert_eq!( + map.into_iter().collect::<Vec<_>>(), + vec![(1, 2), (3, 4), (5, 6)] + ); +} + +#[test] +fn entry() { + let mut map = IndexMap::new(); + + map.insert(1, "1"); + map.insert(2, "2"); + { + let e = map.entry(3); + assert_eq!(e.index(), 2); + let e = e.or_insert("3"); + assert_eq!(e, &"3"); + } + + let e = map.entry(2); + assert_eq!(e.index(), 1); + assert_eq!(e.key(), &2); + match e { + Entry::Occupied(ref e) => assert_eq!(e.get(), &"2"), + Entry::Vacant(_) => panic!(), + } + assert_eq!(e.or_insert("4"), &"2"); +} + +#[test] +fn entry_and_modify() { + let mut map = IndexMap::new(); + + map.insert(1, "1"); + map.entry(1).and_modify(|x| *x = "2"); + assert_eq!(Some(&"2"), map.get(&1)); + + map.entry(2).and_modify(|x| *x = "doesn't exist"); + assert_eq!(None, map.get(&2)); +} + +#[test] +fn entry_or_default() { + let mut map = IndexMap::new(); + + #[derive(Debug, PartialEq)] + enum TestEnum { + DefaultValue, + NonDefaultValue, + } + + impl Default for TestEnum { + fn default() -> Self { + TestEnum::DefaultValue + } + } + + map.insert(1, TestEnum::NonDefaultValue); + assert_eq!(&mut TestEnum::NonDefaultValue, map.entry(1).or_default()); + + assert_eq!(&mut TestEnum::DefaultValue, map.entry(2).or_default()); +} + +#[test] +fn occupied_entry_key() { + // These keys match hash and equality, but their addresses are distinct. + let (k1, k2) = (&mut 1, &mut 1); + let k1_ptr = k1 as *const i32; + let k2_ptr = k2 as *const i32; + assert_ne!(k1_ptr, k2_ptr); + + let mut map = IndexMap::new(); + map.insert(k1, "value"); + match map.entry(k2) { + Entry::Occupied(ref e) => { + // `OccupiedEntry::key` should reference the key in the map, + // not the key that was used to find the entry. + let ptr = *e.key() as *const i32; + assert_eq!(ptr, k1_ptr); + assert_ne!(ptr, k2_ptr); + } + Entry::Vacant(_) => panic!(), + } +} + +#[test] +fn keys() { + let vec = vec![(1, 'a'), (2, 'b'), (3, 'c')]; + let map: IndexMap<_, _> = vec.into_iter().collect(); + let keys: Vec<_> = map.keys().copied().collect(); + assert_eq!(keys.len(), 3); + assert!(keys.contains(&1)); + assert!(keys.contains(&2)); + assert!(keys.contains(&3)); +} + +#[test] +fn into_keys() { + let vec = vec![(1, 'a'), (2, 'b'), (3, 'c')]; + let map: IndexMap<_, _> = vec.into_iter().collect(); + let keys: Vec<i32> = map.into_keys().collect(); + assert_eq!(keys.len(), 3); + assert!(keys.contains(&1)); + assert!(keys.contains(&2)); + assert!(keys.contains(&3)); +} + +#[test] +fn values() { + let vec = vec![(1, 'a'), (2, 'b'), (3, 'c')]; + let map: IndexMap<_, _> = vec.into_iter().collect(); + let values: Vec<_> = map.values().copied().collect(); + assert_eq!(values.len(), 3); + assert!(values.contains(&'a')); + assert!(values.contains(&'b')); + assert!(values.contains(&'c')); +} + +#[test] +fn values_mut() { + let vec = vec![(1, 1), (2, 2), (3, 3)]; + let mut map: IndexMap<_, _> = vec.into_iter().collect(); + for value in map.values_mut() { + *value *= 2 + } + let values: Vec<_> = map.values().copied().collect(); + assert_eq!(values.len(), 3); + assert!(values.contains(&2)); + assert!(values.contains(&4)); + assert!(values.contains(&6)); +} + +#[test] +fn into_values() { + let vec = vec![(1, 'a'), (2, 'b'), (3, 'c')]; + let map: IndexMap<_, _> = vec.into_iter().collect(); + let values: Vec<char> = map.into_values().collect(); + assert_eq!(values.len(), 3); + assert!(values.contains(&'a')); + assert!(values.contains(&'b')); + assert!(values.contains(&'c')); +} + +#[test] +#[cfg(feature = "std")] +fn from_array() { + let map = IndexMap::from([(1, 2), (3, 4)]); + let mut expected = IndexMap::new(); + expected.insert(1, 2); + expected.insert(3, 4); + + assert_eq!(map, expected) +} + +#[test] +fn iter_default() { + struct K; + struct V; + fn assert_default<T>() + where + T: Default + Iterator, + { + assert!(T::default().next().is_none()); + } + assert_default::<Iter<'static, K, V>>(); + assert_default::<IterMut<'static, K, V>>(); + assert_default::<IntoIter<K, V>>(); + assert_default::<Keys<'static, K, V>>(); + assert_default::<IntoKeys<K, V>>(); + assert_default::<Values<'static, K, V>>(); + assert_default::<ValuesMut<'static, K, V>>(); + assert_default::<IntoValues<K, V>>(); +} |