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更新libclamav库1.0.0版本

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# THIS FILE IS AUTOMATICALLY GENERATED BY CARGO
#
# When uploading crates to the registry Cargo will automatically
# "normalize" Cargo.toml files for maximal compatibility
# with all versions of Cargo and also rewrite `path` dependencies
# to registry (e.g., crates.io) dependencies.
#
# If you are reading this file be aware that the original Cargo.toml
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# See Cargo.toml.orig for the original contents.
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edition = "2021"
rust-version = "1.56"
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description = "A hash table with consistent order and fast iteration."
documentation = "https://docs.rs/indexmap/"
readme = "README.md"
keywords = [
"hashmap",
"no_std",
]
categories = [
"data-structures",
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license = "Apache-2.0 OR MIT"
repository = "https://github.com/bluss/indexmap"
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tag-name = "{{version}}"
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std = []
test_debug = []
test_low_transition_point = []

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Copyright (c) 2016--2017
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# indexmap
[![build status](https://github.com/bluss/indexmap/workflows/Continuous%20integration/badge.svg?branch=master)](https://github.com/bluss/indexmap/actions)
[![crates.io](https://img.shields.io/crates/v/indexmap.svg)](https://crates.io/crates/indexmap)
[![docs](https://docs.rs/indexmap/badge.svg)](https://docs.rs/indexmap)
[![rustc](https://img.shields.io/badge/rust-1.56%2B-orange.svg)](https://img.shields.io/badge/rust-1.56%2B-orange.svg)
A pure-Rust hash table which preserves (in a limited sense) insertion order.
This crate implements compact map and set data-structures,
where the iteration order of the keys is independent from their hash or
value. It preserves insertion order (except after removals), and it
allows lookup of entries by either hash table key or numerical index.
Note: this crate was originally released under the name `ordermap`,
but it was renamed to `indexmap` to better reflect its features.
# Background
This was inspired by Python 3.6's new dict implementation (which remembers
the insertion order and is fast to iterate, and is compact in memory).
Some of those features were translated to Rust, and some were not. The result
was indexmap, a hash table that has following properties:
- Order is **independent of hash function** and hash values of keys.
- Fast to iterate.
- Indexed in compact space.
- Preserves insertion order **as long** as you don't call `.remove()`.
- Uses hashbrown for the inner table, just like Rust's libstd `HashMap` does.
## Performance
`IndexMap` derives a couple of performance facts directly from how it is constructed,
which is roughly:
> A raw hash table of key-value indices, and a vector of key-value pairs.
- Iteration is very fast since it is on the dense key-values.
- Removal is fast since it moves memory areas only in the table,
and uses a single swap in the vector.
- Lookup is fast-ish because the initial 7-bit hash lookup uses SIMD, and indices are
densely stored. Lookup also is slow-ish since the actual key-value pairs are stored
separately. (Visible when cpu caches size is limiting.)
- In practice, `IndexMap` has been tested out as the hashmap in rustc in [PR45282] and
the performance was roughly on par across the whole workload.
- If you want the properties of `IndexMap`, or its strongest performance points
fits your workload, it might be the best hash table implementation.
[PR45282]: https://github.com/rust-lang/rust/pull/45282
# Recent Changes
See [RELEASES.md](https://github.com/bluss/indexmap/blob/master/RELEASES.md).

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- 1.9.2
- `IndexMap` and `IndexSet` both implement `arbitrary::Arbitrary<'_>` and
`quickcheck::Arbitrary` if those optional dependency features are enabled.
- 1.9.1
- The MSRV now allows Rust 1.56.0 as well. However, currently `hashbrown`
0.12.1 requires 1.56.1, so users on 1.56.0 should downgrade that to 0.12.0
until there is a later published version relaxing its requirement.
- 1.9.0
- **MSRV**: Rust 1.56.1 or later is now required.
- The `hashbrown` dependency has been updated to version 0.12.
- `IterMut` and `ValuesMut` now implement `Debug`.
- The new `IndexMap::shrink_to` and `IndexSet::shrink_to` methods shrink
the capacity with a lower bound.
- The new `IndexMap::move_index` and `IndexSet::move_index` methods change
the position of an item from one index to another, shifting the items
between to accommodate the move.
- 1.8.2
- Bump the `rustc-rayon` dependency, for compiler use only.
- 1.8.1
- The new `IndexSet::replace_full` will return the index of the item along
with the replaced value, if any, by @zakcutner in PR [222].
[222]: https://github.com/bluss/indexmap/pull/222
- 1.8.0
- The new `IndexMap::into_keys` and `IndexMap::into_values` will consume
the map into keys or values, respectively, matching Rust 1.54's `HashMap`
methods, by @taiki-e in PR [195].
- More of the iterator types implement `Debug`, `ExactSizeIterator`, and
`FusedIterator`, by @cuviper in PR [196].
- `IndexMap` and `IndexSet` now implement rayon's `ParallelDrainRange`,
by @cuviper in PR [197].
- `IndexMap::with_hasher` and `IndexSet::with_hasher` are now `const`
functions, allowing static maps and sets, by @mwillsey in PR [203].
- `IndexMap` and `IndexSet` now implement `From` for arrays, matching
Rust 1.56's implementation for `HashMap`, by @rouge8 in PR [205].
- `IndexMap` and `IndexSet` now have methods `sort_unstable_keys`,
`sort_unstable_by`, `sorted_unstable_by`, and `par_*` equivalents,
which sort in-place without preserving the order of equal items, by
@bhgomes in PR [211].
[195]: https://github.com/bluss/indexmap/pull/195
[196]: https://github.com/bluss/indexmap/pull/196
[197]: https://github.com/bluss/indexmap/pull/197
[203]: https://github.com/bluss/indexmap/pull/203
[205]: https://github.com/bluss/indexmap/pull/205
[211]: https://github.com/bluss/indexmap/pull/211
- 1.7.0
- **MSRV**: Rust 1.49 or later is now required.
- The `hashbrown` dependency has been updated to version 0.11.
- 1.6.2
- Fixed to match `std` behavior, `OccupiedEntry::key` now references the
existing key in the map instead of the lookup key, by @cuviper in PR [170].
- The new `Entry::or_insert_with_key` matches Rust 1.50's `Entry` method,
passing `&K` to the callback to create a value, by @cuviper in PR [175].
[170]: https://github.com/bluss/indexmap/pull/170
[175]: https://github.com/bluss/indexmap/pull/175
- 1.6.1
- The new `serde_seq` module implements `IndexMap` serialization as a
sequence to ensure order is preserved, by @cuviper in PR [158].
- New methods on maps and sets work like the `Vec`/slice methods by the same name:
`truncate`, `split_off`, `first`, `first_mut`, `last`, `last_mut`, and
`swap_indices`, by @cuviper in PR [160].
[158]: https://github.com/bluss/indexmap/pull/158
[160]: https://github.com/bluss/indexmap/pull/160
- 1.6.0
- **MSRV**: Rust 1.36 or later is now required.
- The `hashbrown` dependency has been updated to version 0.9.
- 1.5.2
- The new "std" feature will force the use of `std` for users that explicitly
want the default `S = RandomState`, bypassing the autodetection added in 1.3.0,
by @cuviper in PR [145].
[145]: https://github.com/bluss/indexmap/pull/145
- 1.5.1
- Values can now be indexed by their `usize` position by @cuviper in PR [132].
- Some of the generic bounds have been relaxed to match `std` by @cuviper in PR [141].
- `drain` now accepts any `R: RangeBounds<usize>` by @cuviper in PR [142].
[132]: https://github.com/bluss/indexmap/pull/132
[141]: https://github.com/bluss/indexmap/pull/141
[142]: https://github.com/bluss/indexmap/pull/142
- 1.5.0
- **MSRV**: Rust 1.32 or later is now required.
- The inner hash table is now based on `hashbrown` by @cuviper in PR [131].
This also completes the method `reserve` and adds `shrink_to_fit`.
- Add new methods `get_key_value`, `remove_entry`, `swap_remove_entry`,
and `shift_remove_entry`, by @cuviper in PR [136]
- `Clone::clone_from` reuses allocations by @cuviper in PR [125]
- Add new method `reverse` by @linclelinkpart5 in PR [128]
[125]: https://github.com/bluss/indexmap/pull/125
[128]: https://github.com/bluss/indexmap/pull/128
[131]: https://github.com/bluss/indexmap/pull/131
[136]: https://github.com/bluss/indexmap/pull/136
- 1.4.0
- Add new method `get_index_of` by @Thermatrix in PR [115] and [120]
- Fix build script rebuild-if-changed configuration to use "build.rs";
fixes issue [123]. Fix by @cuviper.
- Dev-dependencies (rand and quickcheck) have been updated. The crate's tests
now run using Rust 1.32 or later (MSRV for building the crate has not changed).
by @kjeremy and @bluss
[123]: https://github.com/bluss/indexmap/issues/123
[115]: https://github.com/bluss/indexmap/pull/115
[120]: https://github.com/bluss/indexmap/pull/120
- 1.3.2
- Maintenance update to regenerate the published `Cargo.toml`.
- 1.3.1
- Maintenance update for formatting and `autocfg` 1.0.
- 1.3.0
- The deprecation messages in the previous version have been removed.
(The methods have not otherwise changed.) Docs for removal methods have been
improved.
- From Rust 1.36, this crate supports being built **without std**, requiring
`alloc` instead. This is enabled automatically when it is detected that
`std` is not available. There is no crate feature to enable/disable to
trigger this. The new build-dep `autocfg` enables this.
- 1.2.0
- Plain `.remove()` now has a deprecation message, it informs the user
about picking one of the removal functions `swap_remove` and `shift_remove`
which have different performance and order semantics.
Plain `.remove()` will not be removed, the warning message and method
will remain until further.
- Add new method `shift_remove` for order preserving removal on the map,
and `shift_take` for the corresponding operation on the set.
- Add methods `swap_remove`, `swap_remove_entry` to `Entry`.
- Fix indexset/indexmap to support full paths, like `indexmap::indexmap!()`
- Internal improvements: fix warnings, deprecations and style lints
- 1.1.0
- Added optional feature `"rayon"` that adds parallel iterator support
to `IndexMap` and `IndexSet` using Rayon. This includes all the regular
iterators in parallel versions, and parallel sort.
- Implemented `Clone` for `map::{Iter, Keys, Values}` and
`set::{Difference, Intersection, Iter, SymmetricDifference, Union}`
- Implemented `Debug` for `map::{Entry, IntoIter, Iter, Keys, Values}` and
`set::{Difference, Intersection, IntoIter, Iter, SymmetricDifference, Union}`
- Serde trait `IntoDeserializer` are implemented for `IndexMap` and `IndexSet`.
- Minimum Rust version requirement increased to Rust 1.30 for development builds.
- 1.0.2
- The new methods `IndexMap::insert_full` and `IndexSet::insert_full` are
both like `insert` with the index included in the return value.
- The new method `Entry::and_modify` can be used to modify occupied
entries, matching the new methods of `std` maps in Rust 1.26.
- The new method `Entry::or_default` inserts a default value in unoccupied
entries, matching the new methods of `std` maps in Rust 1.28.
- 1.0.1
- Document Rust version policy for the crate (see rustdoc)
- 1.0.0
- This is the 1.0 release for `indexmap`! (the crate and datastructure
formerly known as “ordermap”)
- `OccupiedEntry::insert` changed its signature, to use `&mut self` for
the method receiver, matching the equivalent method for a standard
`HashMap`. Thanks to @dtolnay for finding this bug.
- The deprecated old names from ordermap were removed: `OrderMap`,
`OrderSet`, `ordermap!{}`, `orderset!{}`. Use the new `IndexMap`
etc names instead.
- 0.4.1
- Renamed crate to `indexmap`; the `ordermap` crate is now deprecated
and the types `OrderMap/Set` now have a deprecation notice.
- 0.4.0
- This is the last release series for this `ordermap` under that name,
because the crate is **going to be renamed** to `indexmap` (with types
`IndexMap`, `IndexSet`) and no change in functionality!
- The map and its associated structs moved into the `map` submodule of the
crate, so that the map and set are symmetric
+ The iterators, `Entry` and other structs are now under `ordermap::map::`
- Internally refactored `OrderMap<K, V, S>` so that all the main algorithms
(insertion, lookup, removal etc) that don't use the `S` parameter (the
hasher) are compiled without depending on `S`, which reduces generics bloat.
- `Entry<K, V>` no longer has a type parameter `S`, which is just like
the standard `HashMap`'s entry.
- Minimum Rust version requirement increased to Rust 1.18
- 0.3.5
- Documentation improvements
- 0.3.4
- The `.retain()` methods for `OrderMap` and `OrderSet` now
traverse the elements in order, and the retained elements **keep their order**
- Added new methods `.sort_by()`, `.sort_keys()` to `OrderMap` and
`.sort_by()`, `.sort()` to `OrderSet`. These methods allow you to
sort the maps in place efficiently.
- 0.3.3
- Document insertion behaviour better by @lucab
- Updated dependences (no feature changes) by @ignatenkobrain
- 0.3.2
- Add `OrderSet` by @cuviper!
- `OrderMap::drain` is now (too) a double ended iterator.
- 0.3.1
- In all ordermap iterators, forward the `collect` method to the underlying
iterator as well.
- Add crates.io categories.
- 0.3.0
- The methods `get_pair`, `get_pair_index` were both replaced by
`get_full` (and the same for the mutable case).
- Method `swap_remove_pair` replaced by `swap_remove_full`.
- Add trait `MutableKeys` for opt-in mutable key access. Mutable key access
is only possible through the methods of this extension trait.
- Add new trait `Equivalent` for key equivalence. This extends the
`Borrow` trait mechanism for `OrderMap::get` in a backwards compatible
way, just some minor type inference related issues may become apparent.
See [#10] for more information.
- Implement `Extend<(&K, &V)>` by @xfix.
[#10]: https://github.com/bluss/ordermap/pull/10
- 0.2.13
- Fix deserialization to support custom hashers by @Techcable.
- Add methods `.index()` on the entry types by @garro95.
- 0.2.12
- Add methods `.with_hasher()`, `.hasher()`.
- 0.2.11
- Support `ExactSizeIterator` for the iterators. By @Binero.
- Use `Box<[Pos]>` internally, saving a word in the `OrderMap` struct.
- Serde support, with crate feature `"serde-1"`. By @xfix.
- 0.2.10
- Add iterator `.drain(..)` by @stevej.
- 0.2.9
- Add method `.is_empty()` by @overvenus.
- Implement `PartialEq, Eq` by @overvenus.
- Add method `.sorted_by()`.
- 0.2.8
- Add iterators `.values()` and `.values_mut()`.
- Fix compatibility with 32-bit platforms.
- 0.2.7
- Add `.retain()`.
- 0.2.6
- Add `OccupiedEntry::remove_entry` and other minor entry methods,
so that it now has all the features of `HashMap`'s entries.
- 0.2.5
- Improved `.pop()` slightly.
- 0.2.4
- Improved performance of `.insert()` ([#3]) by @pczarn.
[#3]: https://github.com/bluss/ordermap/pull/3
- 0.2.3
- Generalize `Entry` for now, so that it works on hashmaps with non-default
hasher. However, there's a lingering compat issue since libstd `HashMap`
does not parameterize its entries by the hasher (`S` typarm).
- Special case some iterator methods like `.nth()`.
- 0.2.2
- Disable the verbose `Debug` impl by default.
- 0.2.1
- Fix doc links and clarify docs.
- 0.2.0
- Add more `HashMap` methods & compat with its API.
- Experimental support for `.entry()` (the simplest parts of the API).
- Add `.reserve()` (placeholder impl).
- Add `.remove()` as synonym for `.swap_remove()`.
- Changed `.insert()` to swap value if the entry already exists, and
return `Option`.
- Experimental support as an *indexed* hash map! Added methods
`.get_index()`, `.get_index_mut()`, `.swap_remove_index()`,
`.get_pair_index()`, `.get_pair_index_mut()`.
- 0.1.2
- Implement the 32/32 split idea for `Pos` which improves cache utilization
and lookup performance.
- 0.1.1
- Initial release.

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#![feature(test)]
extern crate test;
#[macro_use]
extern crate lazy_static;
use fnv::FnvHasher;
use std::hash::BuildHasherDefault;
use std::hash::Hash;
type FnvBuilder = BuildHasherDefault<FnvHasher>;
use test::black_box;
use test::Bencher;
use indexmap::IndexMap;
use std::collections::HashMap;
use rand::rngs::SmallRng;
use rand::seq::SliceRandom;
use rand::SeedableRng;
/// Use a consistently seeded Rng for benchmark stability
fn small_rng() -> SmallRng {
let seed = u64::from_le_bytes(*b"indexmap");
SmallRng::seed_from_u64(seed)
}
#[bench]
fn new_hashmap(b: &mut Bencher) {
b.iter(|| HashMap::<String, String>::new());
}
#[bench]
fn new_indexmap(b: &mut Bencher) {
b.iter(|| IndexMap::<String, String>::new());
}
#[bench]
fn with_capacity_10e5_hashmap(b: &mut Bencher) {
b.iter(|| HashMap::<String, String>::with_capacity(10_000));
}
#[bench]
fn with_capacity_10e5_indexmap(b: &mut Bencher) {
b.iter(|| IndexMap::<String, String>::with_capacity(10_000));
}
#[bench]
fn insert_hashmap_10_000(b: &mut Bencher) {
let c = 10_000;
b.iter(|| {
let mut map = HashMap::with_capacity(c);
for x in 0..c {
map.insert(x, ());
}
map
});
}
#[bench]
fn insert_indexmap_10_000(b: &mut Bencher) {
let c = 10_000;
b.iter(|| {
let mut map = IndexMap::with_capacity(c);
for x in 0..c {
map.insert(x, ());
}
map
});
}
#[bench]
fn insert_hashmap_string_10_000(b: &mut Bencher) {
let c = 10_000;
b.iter(|| {
let mut map = HashMap::with_capacity(c);
for x in 0..c {
map.insert(x.to_string(), ());
}
map
});
}
#[bench]
fn insert_indexmap_string_10_000(b: &mut Bencher) {
let c = 10_000;
b.iter(|| {
let mut map = IndexMap::with_capacity(c);
for x in 0..c {
map.insert(x.to_string(), ());
}
map
});
}
#[bench]
fn insert_hashmap_str_10_000(b: &mut Bencher) {
let c = 10_000;
let ss = Vec::from_iter((0..c).map(|x| x.to_string()));
b.iter(|| {
let mut map = HashMap::with_capacity(c);
for key in &ss {
map.insert(&key[..], ());
}
map
});
}
#[bench]
fn insert_indexmap_str_10_000(b: &mut Bencher) {
let c = 10_000;
let ss = Vec::from_iter((0..c).map(|x| x.to_string()));
b.iter(|| {
let mut map = IndexMap::with_capacity(c);
for key in &ss {
map.insert(&key[..], ());
}
map
});
}
#[bench]
fn insert_hashmap_int_bigvalue_10_000(b: &mut Bencher) {
let c = 10_000;
let value = [0u64; 10];
b.iter(|| {
let mut map = HashMap::with_capacity(c);
for i in 0..c {
map.insert(i, value);
}
map
});
}
#[bench]
fn insert_indexmap_int_bigvalue_10_000(b: &mut Bencher) {
let c = 10_000;
let value = [0u64; 10];
b.iter(|| {
let mut map = IndexMap::with_capacity(c);
for i in 0..c {
map.insert(i, value);
}
map
});
}
#[bench]
fn insert_hashmap_100_000(b: &mut Bencher) {
let c = 100_000;
b.iter(|| {
let mut map = HashMap::with_capacity(c);
for x in 0..c {
map.insert(x, ());
}
map
});
}
#[bench]
fn insert_indexmap_100_000(b: &mut Bencher) {
let c = 100_000;
b.iter(|| {
let mut map = IndexMap::with_capacity(c);
for x in 0..c {
map.insert(x, ());
}
map
});
}
#[bench]
fn insert_hashmap_150(b: &mut Bencher) {
let c = 150;
b.iter(|| {
let mut map = HashMap::with_capacity(c);
for x in 0..c {
map.insert(x, ());
}
map
});
}
#[bench]
fn insert_indexmap_150(b: &mut Bencher) {
let c = 150;
b.iter(|| {
let mut map = IndexMap::with_capacity(c);
for x in 0..c {
map.insert(x, ());
}
map
});
}
#[bench]
fn entry_hashmap_150(b: &mut Bencher) {
let c = 150;
b.iter(|| {
let mut map = HashMap::with_capacity(c);
for x in 0..c {
map.entry(x).or_insert(());
}
map
});
}
#[bench]
fn entry_indexmap_150(b: &mut Bencher) {
let c = 150;
b.iter(|| {
let mut map = IndexMap::with_capacity(c);
for x in 0..c {
map.entry(x).or_insert(());
}
map
});
}
#[bench]
fn iter_sum_hashmap_10_000(b: &mut Bencher) {
let c = 10_000;
let mut map = HashMap::with_capacity(c);
let len = c - c / 10;
for x in 0..len {
map.insert(x, ());
}
assert_eq!(map.len(), len);
b.iter(|| map.keys().sum::<usize>());
}
#[bench]
fn iter_sum_indexmap_10_000(b: &mut Bencher) {
let c = 10_000;
let mut map = IndexMap::with_capacity(c);
let len = c - c / 10;
for x in 0..len {
map.insert(x, ());
}
assert_eq!(map.len(), len);
b.iter(|| map.keys().sum::<usize>());
}
#[bench]
fn iter_black_box_hashmap_10_000(b: &mut Bencher) {
let c = 10_000;
let mut map = HashMap::with_capacity(c);
let len = c - c / 10;
for x in 0..len {
map.insert(x, ());
}
assert_eq!(map.len(), len);
b.iter(|| {
for &key in map.keys() {
black_box(key);
}
});
}
#[bench]
fn iter_black_box_indexmap_10_000(b: &mut Bencher) {
let c = 10_000;
let mut map = IndexMap::with_capacity(c);
let len = c - c / 10;
for x in 0..len {
map.insert(x, ());
}
assert_eq!(map.len(), len);
b.iter(|| {
for &key in map.keys() {
black_box(key);
}
});
}
fn shuffled_keys<I>(iter: I) -> Vec<I::Item>
where
I: IntoIterator,
{
let mut v = Vec::from_iter(iter);
let mut rng = small_rng();
v.shuffle(&mut rng);
v
}
#[bench]
fn lookup_hashmap_10_000_exist(b: &mut Bencher) {
let c = 10_000;
let mut map = HashMap::with_capacity(c);
let keys = shuffled_keys(0..c);
for &key in &keys {
map.insert(key, 1);
}
b.iter(|| {
let mut found = 0;
for key in 5000..c {
found += map.get(&key).is_some() as i32;
}
found
});
}
#[bench]
fn lookup_hashmap_10_000_noexist(b: &mut Bencher) {
let c = 10_000;
let mut map = HashMap::with_capacity(c);
let keys = shuffled_keys(0..c);
for &key in &keys {
map.insert(key, 1);
}
b.iter(|| {
let mut found = 0;
for key in c..15000 {
found += map.get(&key).is_some() as i32;
}
found
});
}
#[bench]
fn lookup_indexmap_10_000_exist(b: &mut Bencher) {
let c = 10_000;
let mut map = IndexMap::with_capacity(c);
let keys = shuffled_keys(0..c);
for &key in &keys {
map.insert(key, 1);
}
b.iter(|| {
let mut found = 0;
for key in 5000..c {
found += map.get(&key).is_some() as i32;
}
found
});
}
#[bench]
fn lookup_indexmap_10_000_noexist(b: &mut Bencher) {
let c = 10_000;
let mut map = IndexMap::with_capacity(c);
let keys = shuffled_keys(0..c);
for &key in &keys {
map.insert(key, 1);
}
b.iter(|| {
let mut found = 0;
for key in c..15000 {
found += map.get(&key).is_some() as i32;
}
found
});
}
// number of items to look up
const LOOKUP_MAP_SIZE: u32 = 100_000_u32;
const LOOKUP_SAMPLE_SIZE: u32 = 5000;
const SORT_MAP_SIZE: usize = 10_000;
// use lazy_static so that comparison benchmarks use the exact same inputs
lazy_static! {
static ref KEYS: Vec<u32> = shuffled_keys(0..LOOKUP_MAP_SIZE);
}
lazy_static! {
static ref HMAP_100K: HashMap<u32, u32> = {
let c = LOOKUP_MAP_SIZE;
let mut map = HashMap::with_capacity(c as usize);
let keys = &*KEYS;
for &key in keys {
map.insert(key, key);
}
map
};
}
lazy_static! {
static ref IMAP_100K: IndexMap<u32, u32> = {
let c = LOOKUP_MAP_SIZE;
let mut map = IndexMap::with_capacity(c as usize);
let keys = &*KEYS;
for &key in keys {
map.insert(key, key);
}
map
};
}
lazy_static! {
static ref IMAP_SORT_U32: IndexMap<u32, u32> = {
let mut map = IndexMap::with_capacity(SORT_MAP_SIZE);
for &key in &KEYS[..SORT_MAP_SIZE] {
map.insert(key, key);
}
map
};
}
lazy_static! {
static ref IMAP_SORT_S: IndexMap<String, String> = {
let mut map = IndexMap::with_capacity(SORT_MAP_SIZE);
for &key in &KEYS[..SORT_MAP_SIZE] {
map.insert(format!("{:^16x}", &key), String::new());
}
map
};
}
#[bench]
fn lookup_hashmap_100_000_multi(b: &mut Bencher) {
let map = &*HMAP_100K;
b.iter(|| {
let mut found = 0;
for key in 0..LOOKUP_SAMPLE_SIZE {
found += map.get(&key).is_some() as u32;
}
found
});
}
#[bench]
fn lookup_indexmap_100_000_multi(b: &mut Bencher) {
let map = &*IMAP_100K;
b.iter(|| {
let mut found = 0;
for key in 0..LOOKUP_SAMPLE_SIZE {
found += map.get(&key).is_some() as u32;
}
found
});
}
// inorder: Test looking up keys in the same order as they were inserted
#[bench]
fn lookup_hashmap_100_000_inorder_multi(b: &mut Bencher) {
let map = &*HMAP_100K;
let keys = &*KEYS;
b.iter(|| {
let mut found = 0;
for key in &keys[0..LOOKUP_SAMPLE_SIZE as usize] {
found += map.get(key).is_some() as u32;
}
found
});
}
#[bench]
fn lookup_indexmap_100_000_inorder_multi(b: &mut Bencher) {
let map = &*IMAP_100K;
let keys = &*KEYS;
b.iter(|| {
let mut found = 0;
for key in &keys[0..LOOKUP_SAMPLE_SIZE as usize] {
found += map.get(key).is_some() as u32;
}
found
});
}
#[bench]
fn lookup_hashmap_100_000_single(b: &mut Bencher) {
let map = &*HMAP_100K;
let mut iter = (0..LOOKUP_MAP_SIZE + LOOKUP_SAMPLE_SIZE).cycle();
b.iter(|| {
let key = iter.next().unwrap();
map.get(&key).is_some()
});
}
#[bench]
fn lookup_indexmap_100_000_single(b: &mut Bencher) {
let map = &*IMAP_100K;
let mut iter = (0..LOOKUP_MAP_SIZE + LOOKUP_SAMPLE_SIZE).cycle();
b.iter(|| {
let key = iter.next().unwrap();
map.get(&key).is_some()
});
}
const GROW_SIZE: usize = 100_000;
type GrowKey = u32;
// Test grow/resize without preallocation
#[bench]
fn grow_fnv_hashmap_100_000(b: &mut Bencher) {
b.iter(|| {
let mut map: HashMap<_, _, FnvBuilder> = HashMap::default();
for x in 0..GROW_SIZE {
map.insert(x as GrowKey, x as GrowKey);
}
map
});
}
#[bench]
fn grow_fnv_indexmap_100_000(b: &mut Bencher) {
b.iter(|| {
let mut map: IndexMap<_, _, FnvBuilder> = IndexMap::default();
for x in 0..GROW_SIZE {
map.insert(x as GrowKey, x as GrowKey);
}
map
});
}
const MERGE: u64 = 10_000;
#[bench]
fn hashmap_merge_simple(b: &mut Bencher) {
let first_map: HashMap<u64, _> = (0..MERGE).map(|i| (i, ())).collect();
let second_map: HashMap<u64, _> = (MERGE..MERGE * 2).map(|i| (i, ())).collect();
b.iter(|| {
let mut merged = first_map.clone();
merged.extend(second_map.iter().map(|(&k, &v)| (k, v)));
merged
});
}
#[bench]
fn hashmap_merge_shuffle(b: &mut Bencher) {
let first_map: HashMap<u64, _> = (0..MERGE).map(|i| (i, ())).collect();
let second_map: HashMap<u64, _> = (MERGE..MERGE * 2).map(|i| (i, ())).collect();
let mut v = Vec::new();
let mut rng = small_rng();
b.iter(|| {
let mut merged = first_map.clone();
v.extend(second_map.iter().map(|(&k, &v)| (k, v)));
v.shuffle(&mut rng);
merged.extend(v.drain(..));
merged
});
}
#[bench]
fn indexmap_merge_simple(b: &mut Bencher) {
let first_map: IndexMap<u64, _> = (0..MERGE).map(|i| (i, ())).collect();
let second_map: IndexMap<u64, _> = (MERGE..MERGE * 2).map(|i| (i, ())).collect();
b.iter(|| {
let mut merged = first_map.clone();
merged.extend(second_map.iter().map(|(&k, &v)| (k, v)));
merged
});
}
#[bench]
fn indexmap_merge_shuffle(b: &mut Bencher) {
let first_map: IndexMap<u64, _> = (0..MERGE).map(|i| (i, ())).collect();
let second_map: IndexMap<u64, _> = (MERGE..MERGE * 2).map(|i| (i, ())).collect();
let mut v = Vec::new();
let mut rng = small_rng();
b.iter(|| {
let mut merged = first_map.clone();
v.extend(second_map.iter().map(|(&k, &v)| (k, v)));
v.shuffle(&mut rng);
merged.extend(v.drain(..));
merged
});
}
#[bench]
fn swap_remove_indexmap_100_000(b: &mut Bencher) {
let map = IMAP_100K.clone();
let mut keys = Vec::from_iter(map.keys().copied());
let mut rng = small_rng();
keys.shuffle(&mut rng);
b.iter(|| {
let mut map = map.clone();
for key in &keys {
map.swap_remove(key);
}
assert_eq!(map.len(), 0);
map
});
}
#[bench]
fn shift_remove_indexmap_100_000_few(b: &mut Bencher) {
let map = IMAP_100K.clone();
let mut keys = Vec::from_iter(map.keys().copied());
let mut rng = small_rng();
keys.shuffle(&mut rng);
keys.truncate(50);
b.iter(|| {
let mut map = map.clone();
for key in &keys {
map.shift_remove(key);
}
assert_eq!(map.len(), IMAP_100K.len() - keys.len());
map
});
}
#[bench]
fn shift_remove_indexmap_2_000_full(b: &mut Bencher) {
let mut keys = KEYS[..2_000].to_vec();
let mut map = IndexMap::with_capacity(keys.len());
for &key in &keys {
map.insert(key, key);
}
let mut rng = small_rng();
keys.shuffle(&mut rng);
b.iter(|| {
let mut map = map.clone();
for key in &keys {
map.shift_remove(key);
}
assert_eq!(map.len(), 0);
map
});
}
#[bench]
fn pop_indexmap_100_000(b: &mut Bencher) {
let map = IMAP_100K.clone();
b.iter(|| {
let mut map = map.clone();
while !map.is_empty() {
map.pop();
}
assert_eq!(map.len(), 0);
map
});
}
#[bench]
fn few_retain_indexmap_100_000(b: &mut Bencher) {
let map = IMAP_100K.clone();
b.iter(|| {
let mut map = map.clone();
map.retain(|k, _| *k % 7 == 0);
map
});
}
#[bench]
fn few_retain_hashmap_100_000(b: &mut Bencher) {
let map = HMAP_100K.clone();
b.iter(|| {
let mut map = map.clone();
map.retain(|k, _| *k % 7 == 0);
map
});
}
#[bench]
fn half_retain_indexmap_100_000(b: &mut Bencher) {
let map = IMAP_100K.clone();
b.iter(|| {
let mut map = map.clone();
map.retain(|k, _| *k % 2 == 0);
map
});
}
#[bench]
fn half_retain_hashmap_100_000(b: &mut Bencher) {
let map = HMAP_100K.clone();
b.iter(|| {
let mut map = map.clone();
map.retain(|k, _| *k % 2 == 0);
map
});
}
#[bench]
fn many_retain_indexmap_100_000(b: &mut Bencher) {
let map = IMAP_100K.clone();
b.iter(|| {
let mut map = map.clone();
map.retain(|k, _| *k % 100 != 0);
map
});
}
#[bench]
fn many_retain_hashmap_100_000(b: &mut Bencher) {
let map = HMAP_100K.clone();
b.iter(|| {
let mut map = map.clone();
map.retain(|k, _| *k % 100 != 0);
map
});
}
// simple sort impl for comparison
pub fn simple_sort<K: Ord + Hash, V>(m: &mut IndexMap<K, V>) {
let mut ordered: Vec<_> = m.drain(..).collect();
ordered.sort_by(|left, right| left.0.cmp(&right.0));
m.extend(ordered);
}
#[bench]
fn indexmap_sort_s(b: &mut Bencher) {
let map = IMAP_SORT_S.clone();
// there's a map clone there, but it's still useful to profile this
b.iter(|| {
let mut map = map.clone();
map.sort_keys();
map
});
}
#[bench]
fn indexmap_simple_sort_s(b: &mut Bencher) {
let map = IMAP_SORT_S.clone();
// there's a map clone there, but it's still useful to profile this
b.iter(|| {
let mut map = map.clone();
simple_sort(&mut map);
map
});
}
#[bench]
fn indexmap_sort_u32(b: &mut Bencher) {
let map = IMAP_SORT_U32.clone();
// there's a map clone there, but it's still useful to profile this
b.iter(|| {
let mut map = map.clone();
map.sort_keys();
map
});
}
#[bench]
fn indexmap_simple_sort_u32(b: &mut Bencher) {
let map = IMAP_SORT_U32.clone();
// there's a map clone there, but it's still useful to profile this
b.iter(|| {
let mut map = map.clone();
simple_sort(&mut map);
map
});
}
// measure the fixed overhead of cloning in sort benchmarks
#[bench]
fn indexmap_clone_for_sort_s(b: &mut Bencher) {
let map = IMAP_SORT_S.clone();
b.iter(|| map.clone());
}
#[bench]
fn indexmap_clone_for_sort_u32(b: &mut Bencher) {
let map = IMAP_SORT_U32.clone();
b.iter(|| map.clone());
}

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#![feature(test)]
extern crate test;
use test::Bencher;
use indexmap::IndexMap;
use std::collections::HashMap;
use rand::rngs::SmallRng;
use rand::seq::SliceRandom;
use rand::SeedableRng;
use std::hash::{Hash, Hasher};
use std::borrow::Borrow;
use std::ops::Deref;
/// Use a consistently seeded Rng for benchmark stability
fn small_rng() -> SmallRng {
let seed = u64::from_le_bytes(*b"indexmap");
SmallRng::seed_from_u64(seed)
}
#[derive(PartialEq, Eq, Copy, Clone)]
#[repr(transparent)]
pub struct OneShot<T: ?Sized>(pub T);
impl Hash for OneShot<str> {
fn hash<H: Hasher>(&self, h: &mut H) {
h.write(self.0.as_bytes())
}
}
impl<'a, S> From<&'a S> for &'a OneShot<str>
where
S: AsRef<str>,
{
fn from(s: &'a S) -> Self {
let s: &str = s.as_ref();
unsafe { &*(s as *const str as *const OneShot<str>) }
}
}
impl Hash for OneShot<String> {
fn hash<H: Hasher>(&self, h: &mut H) {
h.write(self.0.as_bytes())
}
}
impl Borrow<OneShot<str>> for OneShot<String> {
fn borrow(&self) -> &OneShot<str> {
<&OneShot<str>>::from(&self.0)
}
}
impl<T> Deref for OneShot<T> {
type Target = T;
fn deref(&self) -> &T {
&self.0
}
}
fn shuffled_keys<I>(iter: I) -> Vec<I::Item>
where
I: IntoIterator,
{
let mut v = Vec::from_iter(iter);
let mut rng = small_rng();
v.shuffle(&mut rng);
v
}
#[bench]
fn insert_hashmap_string_10_000(b: &mut Bencher) {
let c = 10_000;
b.iter(|| {
let mut map = HashMap::with_capacity(c);
for x in 0..c {
map.insert(x.to_string(), ());
}
map
});
}
#[bench]
fn insert_hashmap_string_oneshot_10_000(b: &mut Bencher) {
let c = 10_000;
b.iter(|| {
let mut map = HashMap::with_capacity(c);
for x in 0..c {
map.insert(OneShot(x.to_string()), ());
}
map
});
}
#[bench]
fn insert_indexmap_string_10_000(b: &mut Bencher) {
let c = 10_000;
b.iter(|| {
let mut map = IndexMap::with_capacity(c);
for x in 0..c {
map.insert(x.to_string(), ());
}
map
});
}
#[bench]
fn lookup_hashmap_10_000_exist_string(b: &mut Bencher) {
let c = 10_000;
let mut map = HashMap::with_capacity(c);
let keys = shuffled_keys(0..c);
for &key in &keys {
map.insert(key.to_string(), 1);
}
let lookups = (5000..c).map(|x| x.to_string()).collect::<Vec<_>>();
b.iter(|| {
let mut found = 0;
for key in &lookups {
found += map.get(key).is_some() as i32;
}
found
});
}
#[bench]
fn lookup_hashmap_10_000_exist_string_oneshot(b: &mut Bencher) {
let c = 10_000;
let mut map = HashMap::with_capacity(c);
let keys = shuffled_keys(0..c);
for &key in &keys {
map.insert(OneShot(key.to_string()), 1);
}
let lookups = (5000..c)
.map(|x| OneShot(x.to_string()))
.collect::<Vec<_>>();
b.iter(|| {
let mut found = 0;
for key in &lookups {
found += map.get(key).is_some() as i32;
}
found
});
}
#[bench]
fn lookup_indexmap_10_000_exist_string(b: &mut Bencher) {
let c = 10_000;
let mut map = IndexMap::with_capacity(c);
let keys = shuffled_keys(0..c);
for &key in &keys {
map.insert(key.to_string(), 1);
}
let lookups = (5000..c).map(|x| x.to_string()).collect::<Vec<_>>();
b.iter(|| {
let mut found = 0;
for key in &lookups {
found += map.get(key).is_some() as i32;
}
found
});
}
#[bench]
fn lookup_indexmap_10_000_exist_string_oneshot(b: &mut Bencher) {
let c = 10_000;
let mut map = IndexMap::with_capacity(c);
let keys = shuffled_keys(0..c);
for &key in &keys {
map.insert(OneShot(key.to_string()), 1);
}
let lookups = (5000..c)
.map(|x| OneShot(x.to_string()))
.collect::<Vec<_>>();
b.iter(|| {
let mut found = 0;
for key in &lookups {
found += map.get(key).is_some() as i32;
}
found
});
}

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fn main() {
// If "std" is explicitly requested, don't bother probing the target for it.
match std::env::var_os("CARGO_FEATURE_STD") {
Some(_) => autocfg::emit("has_std"),
None => autocfg::new().emit_sysroot_crate("std"),
}
autocfg::rerun_path("build.rs");
}

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#[cfg(feature = "arbitrary")]
mod impl_arbitrary {
use crate::{IndexMap, IndexSet};
use arbitrary::{Arbitrary, Result, Unstructured};
use core::hash::{BuildHasher, Hash};
impl<'a, K, V, S> Arbitrary<'a> for IndexMap<K, V, S>
where
K: Arbitrary<'a> + Hash + Eq,
V: Arbitrary<'a>,
S: BuildHasher + Default,
{
fn arbitrary(u: &mut Unstructured<'a>) -> Result<Self> {
u.arbitrary_iter()?.collect()
}
fn arbitrary_take_rest(u: Unstructured<'a>) -> Result<Self> {
u.arbitrary_take_rest_iter()?.collect()
}
}
impl<'a, T, S> Arbitrary<'a> for IndexSet<T, S>
where
T: Arbitrary<'a> + Hash + Eq,
S: BuildHasher + Default,
{
fn arbitrary(u: &mut Unstructured<'a>) -> Result<Self> {
u.arbitrary_iter()?.collect()
}
fn arbitrary_take_rest(u: Unstructured<'a>) -> Result<Self> {
u.arbitrary_take_rest_iter()?.collect()
}
}
}
#[cfg(feature = "quickcheck")]
mod impl_quickcheck {
use crate::{IndexMap, IndexSet};
use alloc::boxed::Box;
use alloc::vec::Vec;
use core::hash::{BuildHasher, Hash};
use quickcheck::{Arbitrary, Gen};
impl<K, V, S> Arbitrary for IndexMap<K, V, S>
where
K: Arbitrary + Hash + Eq,
V: Arbitrary,
S: BuildHasher + Default + Clone + 'static,
{
fn arbitrary(g: &mut Gen) -> Self {
Self::from_iter(Vec::arbitrary(g))
}
fn shrink(&self) -> Box<dyn Iterator<Item = Self>> {
let vec = Vec::from_iter(self.clone());
Box::new(vec.shrink().map(Self::from_iter))
}
}
impl<T, S> Arbitrary for IndexSet<T, S>
where
T: Arbitrary + Hash + Eq,
S: BuildHasher + Default + Clone + 'static,
{
fn arbitrary(g: &mut Gen) -> Self {
Self::from_iter(Vec::arbitrary(g))
}
fn shrink(&self) -> Box<dyn Iterator<Item = Self>> {
let vec = Vec::from_iter(self.clone());
Box::new(vec.shrink().map(Self::from_iter))
}
}
}

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use core::borrow::Borrow;
/// Key equivalence trait.
///
/// This trait allows hash table lookup to be customized.
/// It has one blanket implementation that uses the regular `Borrow` solution,
/// just like `HashMap` and `BTreeMap` do, so that you can pass `&str` to lookup
/// into a map with `String` keys and so on.
///
/// # Contract
///
/// The implementor **must** hash like `K`, if it is hashable.
pub trait Equivalent<K: ?Sized> {
/// Compare self to `key` and return `true` if they are equal.
fn equivalent(&self, key: &K) -> bool;
}
impl<Q: ?Sized, K: ?Sized> Equivalent<K> for Q
where
Q: Eq,
K: Borrow<Q>,
{
#[inline]
fn equivalent(&self, key: &K) -> bool {
*self == *key.borrow()
}
}

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// We *mostly* avoid unsafe code, but `map::core::raw` allows it to use `RawTable` buckets.
#![deny(unsafe_code)]
#![warn(rust_2018_idioms)]
#![doc(html_root_url = "https://docs.rs/indexmap/1/")]
#![no_std]
//! [`IndexMap`] is a hash table where the iteration order of the key-value
//! pairs is independent of the hash values of the keys.
//!
//! [`IndexSet`] is a corresponding hash set using the same implementation and
//! with similar properties.
//!
//! [`IndexMap`]: map/struct.IndexMap.html
//! [`IndexSet`]: set/struct.IndexSet.html
//!
//!
//! ### Feature Highlights
//!
//! [`IndexMap`] and [`IndexSet`] are drop-in compatible with the std `HashMap`
//! and `HashSet`, but they also have some features of note:
//!
//! - The ordering semantics (see their documentation for details)
//! - Sorting methods and the [`.pop()`][IndexMap::pop] methods.
//! - The [`Equivalent`] trait, which offers more flexible equality definitions
//! between borrowed and owned versions of keys.
//! - The [`MutableKeys`][map::MutableKeys] trait, which gives opt-in mutable
//! access to hash map keys.
//!
//! ### Alternate Hashers
//!
//! [`IndexMap`] and [`IndexSet`] have a default hasher type `S = RandomState`,
//! just like the standard `HashMap` and `HashSet`, which is resistant to
//! HashDoS attacks but not the most performant. Type aliases can make it easier
//! to use alternate hashers:
//!
//! ```
//! use fnv::FnvBuildHasher;
//! use fxhash::FxBuildHasher;
//! use indexmap::{IndexMap, IndexSet};
//!
//! type FnvIndexMap<K, V> = IndexMap<K, V, FnvBuildHasher>;
//! type FnvIndexSet<T> = IndexSet<T, FnvBuildHasher>;
//!
//! type FxIndexMap<K, V> = IndexMap<K, V, FxBuildHasher>;
//! type FxIndexSet<T> = IndexSet<T, FxBuildHasher>;
//!
//! let std: IndexSet<i32> = (0..100).collect();
//! let fnv: FnvIndexSet<i32> = (0..100).collect();
//! let fx: FxIndexSet<i32> = (0..100).collect();
//! assert_eq!(std, fnv);
//! assert_eq!(std, fx);
//! ```
//!
//! ### Rust Version
//!
//! This version of indexmap requires Rust 1.56 or later.
//!
//! The indexmap 1.x release series will use a carefully considered version
//! upgrade policy, where in a later 1.x version, we will raise the minimum
//! required Rust version.
//!
//! ## No Standard Library Targets
//!
//! This crate supports being built without `std`, requiring
//! `alloc` instead. This is enabled automatically when it is detected that
//! `std` is not available. There is no crate feature to enable/disable to
//! trigger this. It can be tested by building for a std-less target.
//!
//! - Creating maps and sets using [`new`][IndexMap::new] and
//! [`with_capacity`][IndexMap::with_capacity] is unavailable without `std`.
//! Use methods [`IndexMap::default`][def],
//! [`with_hasher`][IndexMap::with_hasher],
//! [`with_capacity_and_hasher`][IndexMap::with_capacity_and_hasher] instead.
//! A no-std compatible hasher will be needed as well, for example
//! from the crate `twox-hash`.
//! - Macros [`indexmap!`] and [`indexset!`] are unavailable without `std`.
//!
//! [def]: map/struct.IndexMap.html#impl-Default
extern crate alloc;
#[cfg(has_std)]
#[macro_use]
extern crate std;
use alloc::vec::{self, Vec};
mod arbitrary;
#[macro_use]
mod macros;
mod equivalent;
mod mutable_keys;
#[cfg(feature = "serde")]
mod serde;
#[cfg(feature = "serde")]
pub mod serde_seq;
mod util;
pub mod map;
pub mod set;
// Placed after `map` and `set` so new `rayon` methods on the types
// are documented after the "normal" methods.
#[cfg(feature = "rayon")]
mod rayon;
#[cfg(feature = "rustc-rayon")]
mod rustc;
pub use crate::equivalent::Equivalent;
pub use crate::map::IndexMap;
pub use crate::set::IndexSet;
// shared private items
/// Hash value newtype. Not larger than usize, since anything larger
/// isn't used for selecting position anyway.
#[derive(Clone, Copy, Debug, PartialEq)]
struct HashValue(usize);
impl HashValue {
#[inline(always)]
fn get(self) -> u64 {
self.0 as u64
}
}
#[derive(Copy, Debug)]
struct Bucket<K, V> {
hash: HashValue,
key: K,
value: V,
}
impl<K, V> Clone for Bucket<K, V>
where
K: Clone,
V: Clone,
{
fn clone(&self) -> Self {
Bucket {
hash: self.hash,
key: self.key.clone(),
value: self.value.clone(),
}
}
fn clone_from(&mut self, other: &Self) {
self.hash = other.hash;
self.key.clone_from(&other.key);
self.value.clone_from(&other.value);
}
}
impl<K, V> Bucket<K, V> {
// field accessors -- used for `f` instead of closures in `.map(f)`
fn key_ref(&self) -> &K {
&self.key
}
fn value_ref(&self) -> &V {
&self.value
}
fn value_mut(&mut self) -> &mut V {
&mut self.value
}
fn key(self) -> K {
self.key
}
fn value(self) -> V {
self.value
}
fn key_value(self) -> (K, V) {
(self.key, self.value)
}
fn refs(&self) -> (&K, &V) {
(&self.key, &self.value)
}
fn ref_mut(&mut self) -> (&K, &mut V) {
(&self.key, &mut self.value)
}
fn muts(&mut self) -> (&mut K, &mut V) {
(&mut self.key, &mut self.value)
}
}
trait Entries {
type Entry;
fn into_entries(self) -> Vec<Self::Entry>;
fn as_entries(&self) -> &[Self::Entry];
fn as_entries_mut(&mut self) -> &mut [Self::Entry];
fn with_entries<F>(&mut self, f: F)
where
F: FnOnce(&mut [Self::Entry]);
}

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#[cfg(has_std)]
#[macro_export]
/// Create an `IndexMap` from a list of key-value pairs
///
/// ## Example
///
/// ```
/// use indexmap::indexmap;
///
/// let map = indexmap!{
/// "a" => 1,
/// "b" => 2,
/// };
/// assert_eq!(map["a"], 1);
/// assert_eq!(map["b"], 2);
/// assert_eq!(map.get("c"), None);
///
/// // "a" is the first key
/// assert_eq!(map.keys().next(), Some(&"a"));
/// ```
macro_rules! indexmap {
(@single $($x:tt)*) => (());
(@count $($rest:expr),*) => (<[()]>::len(&[$($crate::indexmap!(@single $rest)),*]));
($($key:expr => $value:expr,)+) => { $crate::indexmap!($($key => $value),+) };
($($key:expr => $value:expr),*) => {
{
let _cap = $crate::indexmap!(@count $($key),*);
let mut _map = $crate::IndexMap::with_capacity(_cap);
$(
_map.insert($key, $value);
)*
_map
}
};
}
#[cfg(has_std)]
#[macro_export]
/// Create an `IndexSet` from a list of values
///
/// ## Example
///
/// ```
/// use indexmap::indexset;
///
/// let set = indexset!{
/// "a",
/// "b",
/// };
/// assert!(set.contains("a"));
/// assert!(set.contains("b"));
/// assert!(!set.contains("c"));
///
/// // "a" is the first value
/// assert_eq!(set.iter().next(), Some(&"a"));
/// ```
macro_rules! indexset {
(@single $($x:tt)*) => (());
(@count $($rest:expr),*) => (<[()]>::len(&[$($crate::indexset!(@single $rest)),*]));
($($value:expr,)+) => { $crate::indexset!($($value),+) };
($($value:expr),*) => {
{
let _cap = $crate::indexset!(@count $($value),*);
let mut _set = $crate::IndexSet::with_capacity(_cap);
$(
_set.insert($value);
)*
_set
}
};
}
// generate all the Iterator methods by just forwarding to the underlying
// self.iter and mapping its element.
macro_rules! iterator_methods {
// $map_elt is the mapping function from the underlying iterator's element
// same mapping function for both options and iterators
($map_elt:expr) => {
fn next(&mut self) -> Option<Self::Item> {
self.iter.next().map($map_elt)
}
fn size_hint(&self) -> (usize, Option<usize>) {
self.iter.size_hint()
}
fn count(self) -> usize {
self.iter.len()
}
fn nth(&mut self, n: usize) -> Option<Self::Item> {
self.iter.nth(n).map($map_elt)
}
fn last(mut self) -> Option<Self::Item> {
self.next_back()
}
fn collect<C>(self) -> C
where
C: FromIterator<Self::Item>,
{
// NB: forwarding this directly to standard iterators will
// allow it to leverage unstable traits like `TrustedLen`.
self.iter.map($map_elt).collect()
}
};
}
macro_rules! double_ended_iterator_methods {
// $map_elt is the mapping function from the underlying iterator's element
// same mapping function for both options and iterators
($map_elt:expr) => {
fn next_back(&mut self) -> Option<Self::Item> {
self.iter.next_back().map($map_elt)
}
fn nth_back(&mut self, n: usize) -> Option<Self::Item> {
self.iter.nth_back(n).map($map_elt)
}
};
}
// generate `ParallelIterator` methods by just forwarding to the underlying
// self.entries and mapping its elements.
#[cfg(any(feature = "rayon", feature = "rustc-rayon"))]
macro_rules! parallel_iterator_methods {
// $map_elt is the mapping function from the underlying iterator's element
($map_elt:expr) => {
fn drive_unindexed<C>(self, consumer: C) -> C::Result
where
C: UnindexedConsumer<Self::Item>,
{
self.entries
.into_par_iter()
.map($map_elt)
.drive_unindexed(consumer)
}
// NB: This allows indexed collection, e.g. directly into a `Vec`, but the
// underlying iterator must really be indexed. We should remove this if we
// start having tombstones that must be filtered out.
fn opt_len(&self) -> Option<usize> {
Some(self.entries.len())
}
};
}
// generate `IndexedParallelIterator` methods by just forwarding to the underlying
// self.entries and mapping its elements.
#[cfg(any(feature = "rayon", feature = "rustc-rayon"))]
macro_rules! indexed_parallel_iterator_methods {
// $map_elt is the mapping function from the underlying iterator's element
($map_elt:expr) => {
fn drive<C>(self, consumer: C) -> C::Result
where
C: Consumer<Self::Item>,
{
self.entries.into_par_iter().map($map_elt).drive(consumer)
}
fn len(&self) -> usize {
self.entries.len()
}
fn with_producer<CB>(self, callback: CB) -> CB::Output
where
CB: ProducerCallback<Self::Item>,
{
self.entries
.into_par_iter()
.map($map_elt)
.with_producer(callback)
}
};
}

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//! 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 core::cmp;
use core::fmt;
use core::mem::replace;
use core::ops::RangeBounds;
use crate::equivalent::Equivalent;
use crate::util::simplify_range;
use crate::{Bucket, Entries, 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 indices = self.indices.clone();
let mut entries = Vec::with_capacity(indices.capacity());
entries.clone_from(&self.entries);
IndexMapCore { indices, entries }
}
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
self.reserve_entries();
}
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> {
#[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 {
cmp::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));
self.reserve_entries();
}
/// Reserve entries capacity to match the indices
fn reserve_entries(&mut self) {
let additional = self.indices.capacity() - self.entries.len();
self.entries.reserve_exact(additional);
}
/// 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, *without* checking whether it already exists,
/// and return the pair's new index.
fn push(&mut self, hash: HashValue, key: K, value: V) -> usize {
let i = self.entries.len();
self.indices.insert(hash.get(), i, get_hash(&self.entries));
if i == self.entries.capacity() {
// Reserve our own capacity synced to the indices,
// rather than letting `Vec::push` just double it.
self.reserve_entries();
}
self.entries.push(Bucket { hash, key, value });
i
}
/// 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.get_index_of(hash, &key) {
Some(i) => (i, Some(replace(&mut self.entries[i].value, value))),
None => (self.push(hash, key, value), 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 sentinal 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 sentinal index to its final position.
update_index(&mut self.indices, from_hash, usize::MAX, to);
}
}
/// 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,
{
// FIXME: This could use Vec::retain_mut with MSRV 1.61.
// Like Vec::retain in self.entries, but with mutable K and V.
// We swap-shift all the items we want to keep, truncate the rest,
// then rebuild the raw hash table with the new indexes.
let len = self.entries.len();
let mut n_deleted = 0;
for i in 0..len {
let will_keep = {
let entry = &mut self.entries[i];
keep(&mut entry.key, &mut entry.value)
};
if !will_keep {
n_deleted += 1;
} else if n_deleted > 0 {
self.entries.swap(i - n_deleted, i);
}
}
if n_deleted > 0 {
self.entries.truncate(len - n_deleted);
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 {
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.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.map.push(self.hash, self.key, value);
&mut self.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>>();
}

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clamav/libclamav_rust/.cargo/vendor/indexmap/src/map/core/raw.rs vendored Normal file
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@@ -0,0 +1,191 @@
#![allow(unsafe_code)]
//! This module encapsulates the `unsafe` access to `hashbrown::raw::RawTable`,
//! mostly in dealing with its bucket "pointers".
use super::{equivalent, 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.read()) };
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.read();
if i >= end {
bucket.write(i - offset);
} else if i >= start {
self.indices.erase(bucket);
}
}
}
}
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()) }
}
/// Return the raw bucket for the given index
fn find_index(&self, index: usize) -> RawBucket {
// We'll get a "nice" bounds-check from indexing `self.entries`,
// and then we expect to find it in the table as well.
let hash = self.entries[index].hash.get();
self.indices
.find(hash, move |&i| i == index)
.expect("index not found")
}
pub(crate) fn swap_indices(&mut self, a: usize, b: usize) {
// SAFETY: Can't take two `get_mut` references from one table, so we
// must use raw buckets to do the swap. This is still safe because we
// are locally sure they won't dangle, and we write them individually.
unsafe {
let raw_bucket_a = self.find_index(a);
let raw_bucket_b = self.find_index(b);
raw_bucket_a.write(b);
raw_bucket_b.write(a);
}
self.entries.swap(a, b);
}
}
/// 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.read() }
}
/// 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 = 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 = unsafe { self.map.indices.remove(self.raw_bucket) };
self.map.shift_remove_finish(index)
}
}

75
clamav/libclamav_rust/.cargo/vendor/indexmap/src/mutable_keys.rs vendored Normal file
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use core::hash::{BuildHasher, Hash};
use super::{Equivalent, IndexMap};
pub struct PrivateMarker {}
/// Opt-in mutable access to keys.
///
/// These methods expose `&mut K`, mutable references to the key as it is stored
/// in the map.
/// You are allowed to modify the keys in the hashmap **if the modification
/// does not change the key’s hash and equality**.
///
/// If keys are modified erroneously, you can no longer look them up.
/// This is sound (memory safe) but a logical error hazard (just like
/// implementing PartialEq, Eq, or Hash incorrectly would be).
///
/// `use` this trait to enable its methods for `IndexMap`.
pub trait MutableKeys {
type Key;
type Value;
/// Return item index, mutable reference to key and value
fn get_full_mut2<Q: ?Sized>(
&mut self,
key: &Q,
) -> Option<(usize, &mut Self::Key, &mut Self::Value)>
where
Q: Hash + Equivalent<Self::Key>;
/// Scan through each key-value pair in the map and keep those where the
/// closure `keep` returns `true`.
///
/// The elements are visited in order, and remaining elements keep their
/// order.
///
/// Computes in **O(n)** time (average).
fn retain2<F>(&mut self, keep: F)
where
F: FnMut(&mut Self::Key, &mut Self::Value) -> bool;
/// This method is not useful in itself – it is there to “seal” the trait
/// for external implementation, so that we can add methods without
/// causing breaking changes.
fn __private_marker(&self) -> PrivateMarker;
}
/// Opt-in mutable access to keys.
///
/// See [`MutableKeys`](trait.MutableKeys.html) for more information.
impl<K, V, S> MutableKeys for IndexMap<K, V, S>
where
K: Eq + Hash,
S: BuildHasher,
{
type Key = K;
type Value = V;
fn get_full_mut2<Q: ?Sized>(&mut self, key: &Q) -> Option<(usize, &mut K, &mut V)>
where
Q: Hash + Equivalent<K>,
{
self.get_full_mut2_impl(key)
}
fn retain2<F>(&mut self, keep: F)
where
F: FnMut(&mut K, &mut V) -> bool,
{
self.retain_mut(keep)
}
fn __private_marker(&self) -> PrivateMarker {
PrivateMarker {}
}
}

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clamav/libclamav_rust/.cargo/vendor/indexmap/src/rayon/map.rs vendored Normal file
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//! Parallel iterator types for `IndexMap` with [rayon](https://docs.rs/rayon/1.0/rayon).
//!
//! You will rarely need to interact with this module directly unless you need to name one of the
//! iterator types.
//!
//! Requires crate feature `"rayon"`
use super::collect;
use rayon::iter::plumbing::{Consumer, ProducerCallback, UnindexedConsumer};
use rayon::prelude::*;
use crate::vec::Vec;
use core::cmp::Ordering;
use core::fmt;
use core::hash::{BuildHasher, Hash};
use core::ops::RangeBounds;
use crate::Bucket;
use crate::Entries;
use crate::IndexMap;
/// Requires crate feature `"rayon"`.
impl<K, V, S> IntoParallelIterator for IndexMap<K, V, S>
where
K: Send,
V: Send,
{
type Item = (K, V);
type Iter = IntoParIter<K, V>;
fn into_par_iter(self) -> Self::Iter {
IntoParIter {
entries: self.into_entries(),
}
}
}
/// A parallel owning iterator over the entries of a `IndexMap`.
///
/// This `struct` is created by the [`into_par_iter`] method on [`IndexMap`]
/// (provided by rayon's `IntoParallelIterator` trait). See its documentation for more.
///
/// [`into_par_iter`]: ../struct.IndexMap.html#method.into_par_iter
/// [`IndexMap`]: ../struct.IndexMap.html
pub struct IntoParIter<K, V> {
entries: Vec<Bucket<K, V>>,
}
impl<K: fmt::Debug, V: fmt::Debug> fmt::Debug for IntoParIter<K, V> {
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
let iter = self.entries.iter().map(Bucket::refs);
f.debug_list().entries(iter).finish()
}
}
impl<K: Send, V: Send> ParallelIterator for IntoParIter<K, V> {
type Item = (K, V);
parallel_iterator_methods!(Bucket::key_value);
}
impl<K: Send, V: Send> IndexedParallelIterator for IntoParIter<K, V> {
indexed_parallel_iterator_methods!(Bucket::key_value);
}
/// Requires crate feature `"rayon"`.
impl<'a, K, V, S> IntoParallelIterator for &'a IndexMap<K, V, S>
where
K: Sync,
V: Sync,
{
type Item = (&'a K, &'a V);
type Iter = ParIter<'a, K, V>;
fn into_par_iter(self) -> Self::Iter {
ParIter {
entries: self.as_entries(),
}
}
}
/// A parallel iterator over the entries of a `IndexMap`.
///
/// This `struct` is created by the [`par_iter`] method on [`IndexMap`]
/// (provided by rayon's `IntoParallelRefIterator` trait). See its documentation for more.
///
/// [`par_iter`]: ../struct.IndexMap.html#method.par_iter
/// [`IndexMap`]: ../struct.IndexMap.html
pub struct ParIter<'a, K, V> {
entries: &'a [Bucket<K, V>],
}
impl<K, V> Clone for ParIter<'_, K, V> {
fn clone(&self) -> Self {
ParIter { ..*self }
}
}
impl<K: fmt::Debug, V: fmt::Debug> fmt::Debug for ParIter<'_, K, V> {
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
let iter = self.entries.iter().map(Bucket::refs);
f.debug_list().entries(iter).finish()
}
}
impl<'a, K: Sync, V: Sync> ParallelIterator for ParIter<'a, K, V> {
type Item = (&'a K, &'a V);
parallel_iterator_methods!(Bucket::refs);
}
impl<K: Sync, V: Sync> IndexedParallelIterator for ParIter<'_, K, V> {
indexed_parallel_iterator_methods!(Bucket::refs);
}
/// Requires crate feature `"rayon"`.
impl<'a, K, V, S> IntoParallelIterator for &'a mut IndexMap<K, V, S>
where
K: Sync + Send,
V: Send,
{
type Item = (&'a K, &'a mut V);
type Iter = ParIterMut<'a, K, V>;
fn into_par_iter(self) -> Self::Iter {
ParIterMut {
entries: self.as_entries_mut(),
}
}
}
/// A parallel mutable iterator over the entries of a `IndexMap`.
///
/// This `struct` is created by the [`par_iter_mut`] method on [`IndexMap`]
/// (provided by rayon's `IntoParallelRefMutIterator` trait). See its documentation for more.
///
/// [`par_iter_mut`]: ../struct.IndexMap.html#method.par_iter_mut
/// [`IndexMap`]: ../struct.IndexMap.html
pub struct ParIterMut<'a, K, V> {
entries: &'a mut [Bucket<K, V>],
}
impl<K: fmt::Debug, V: fmt::Debug> fmt::Debug for ParIterMut<'_, K, V> {
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
let iter = self.entries.iter().map(Bucket::refs);
f.debug_list().entries(iter).finish()
}
}
impl<'a, K: Sync + Send, V: Send> ParallelIterator for ParIterMut<'a, K, V> {
type Item = (&'a K, &'a mut V);
parallel_iterator_methods!(Bucket::ref_mut);
}
impl<K: Sync + Send, V: Send> IndexedParallelIterator for ParIterMut<'_, K, V> {
indexed_parallel_iterator_methods!(Bucket::ref_mut);
}
/// Requires crate feature `"rayon"`.
impl<'a, K, V, S> ParallelDrainRange<usize> for &'a mut IndexMap<K, V, S>
where
K: Send,
V: Send,
{
type Item = (K, V);
type Iter = ParDrain<'a, K, V>;
fn par_drain<R: RangeBounds<usize>>(self, range: R) -> Self::Iter {
ParDrain {
entries: self.core.par_drain(range),
}
}
}
/// A parallel draining iterator over the entries of a `IndexMap`.
///
/// This `struct` is created by the [`par_drain`] method on [`IndexMap`]
/// (provided by rayon's `ParallelDrainRange` trait). See its documentation for more.
///
/// [`par_drain`]: ../struct.IndexMap.html#method.par_drain
/// [`IndexMap`]: ../struct.IndexMap.html
pub struct ParDrain<'a, K: Send, V: Send> {
entries: rayon::vec::Drain<'a, Bucket<K, V>>,
}
impl<K: Send, V: Send> ParallelIterator for ParDrain<'_, K, V> {
type Item = (K, V);
parallel_iterator_methods!(Bucket::key_value);
}
impl<K: Send, V: Send> IndexedParallelIterator for ParDrain<'_, K, V> {
indexed_parallel_iterator_methods!(Bucket::key_value);
}
/// Parallel iterator methods and other parallel methods.
///
/// The following methods **require crate feature `"rayon"`**.
///
/// See also the `IntoParallelIterator` implementations.
impl<K, V, S> IndexMap<K, V, S>
where
K: Sync,
V: Sync,
{
/// Return a parallel iterator over the keys of the map.
///
/// While parallel iterators can process items in any order, their relative order
/// in the map is still preserved for operations like `reduce` and `collect`.
pub fn par_keys(&self) -> ParKeys<'_, K, V> {
ParKeys {
entries: self.as_entries(),
}
}
/// Return a parallel iterator over the values of the map.
///
/// While parallel iterators can process items in any order, their relative order
/// in the map is still preserved for operations like `reduce` and `collect`.
pub fn par_values(&self) -> ParValues<'_, K, V> {
ParValues {
entries: self.as_entries(),
}
}
}
impl<K, V, S> IndexMap<K, V, S>
where
K: Hash + Eq + Sync,
V: Sync,
S: BuildHasher,
{
/// Returns `true` if `self` contains all of the same key-value pairs as `other`,
/// regardless of each map's indexed order, determined in parallel.
pub fn par_eq<V2, S2>(&self, other: &IndexMap<K, V2, S2>) -> bool
where
V: PartialEq<V2>,
V2: Sync,
S2: BuildHasher + Sync,
{
self.len() == other.len()
&& self
.par_iter()
.all(move |(key, value)| other.get(key).map_or(false, |v| *value == *v))
}
}
/// A parallel iterator over the keys of a `IndexMap`.
///
/// This `struct` is created by the [`par_keys`] method on [`IndexMap`]. See its
/// documentation for more.
///
/// [`par_keys`]: ../struct.IndexMap.html#method.par_keys
/// [`IndexMap`]: ../struct.IndexMap.html
pub struct ParKeys<'a, K, V> {
entries: &'a [Bucket<K, V>],
}
impl<K, V> Clone for ParKeys<'_, K, V> {
fn clone(&self) -> Self {
ParKeys { ..*self }
}
}
impl<K: fmt::Debug, V> fmt::Debug for ParKeys<'_, K, V> {
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
let iter = self.entries.iter().map(Bucket::key_ref);
f.debug_list().entries(iter).finish()
}
}
impl<'a, K: Sync, V: Sync> ParallelIterator for ParKeys<'a, K, V> {
type Item = &'a K;
parallel_iterator_methods!(Bucket::key_ref);
}
impl<K: Sync, V: Sync> IndexedParallelIterator for ParKeys<'_, K, V> {
indexed_parallel_iterator_methods!(Bucket::key_ref);
}
/// A parallel iterator over the values of a `IndexMap`.
///
/// This `struct` is created by the [`par_values`] method on [`IndexMap`]. See its
/// documentation for more.
///
/// [`par_values`]: ../struct.IndexMap.html#method.par_values
/// [`IndexMap`]: ../struct.IndexMap.html
pub struct ParValues<'a, K, V> {
entries: &'a [Bucket<K, V>],
}
impl<K, V> Clone for ParValues<'_, K, V> {
fn clone(&self) -> Self {
ParValues { ..*self }
}
}
impl<K, V: fmt::Debug> fmt::Debug for ParValues<'_, K, V> {
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
let iter = self.entries.iter().map(Bucket::value_ref);
f.debug_list().entries(iter).finish()
}
}
impl<'a, K: Sync, V: Sync> ParallelIterator for ParValues<'a, K, V> {
type Item = &'a V;
parallel_iterator_methods!(Bucket::value_ref);
}
impl<K: Sync, V: Sync> IndexedParallelIterator for ParValues<'_, K, V> {
indexed_parallel_iterator_methods!(Bucket::value_ref);
}
/// Requires crate feature `"rayon"`.
impl<K, V, S> IndexMap<K, V, S>
where
K: Send,
V: Send,
{
/// Return a parallel iterator over mutable references to the values of the map
///
/// While parallel iterators can process items in any order, their relative order
/// in the map is still preserved for operations like `reduce` and `collect`.
pub fn par_values_mut(&mut self) -> ParValuesMut<'_, K, V> {
ParValuesMut {
entries: self.as_entries_mut(),
}
}
}
impl<K, V, S> IndexMap<K, V, S>
where
K: Hash + Eq + Send,
V: Send,
S: BuildHasher,
{
/// Sort the map’s key-value pairs in parallel, by the default ordering of the keys.
pub fn par_sort_keys(&mut self)
where
K: Ord,
{
self.with_entries(|entries| {
entries.par_sort_by(|a, b| K::cmp(&a.key, &b.key));
});
}
/// Sort the map’s key-value pairs in place and in parallel, using the comparison
/// function `cmp`.
///
/// The comparison function receives two key and value pairs to compare (you
/// can sort by keys or values or their combination as needed).
pub fn par_sort_by<F>(&mut self, cmp: F)
where
F: Fn(&K, &V, &K, &V) -> Ordering + Sync,
{
self.with_entries(|entries| {
entries.par_sort_by(move |a, b| cmp(&a.key, &a.value, &b.key, &b.value));
});
}
/// Sort the key-value pairs of the map in parallel and return a by-value parallel
/// iterator of the key-value pairs with the result.
pub fn par_sorted_by<F>(self, cmp: F) -> IntoParIter<K, V>
where
F: Fn(&K, &V, &K, &V) -> Ordering + Sync,
{
let mut entries = self.into_entries();
entries.par_sort_by(move |a, b| cmp(&a.key, &a.value, &b.key, &b.value));
IntoParIter { entries }
}
/// Sort the map's key-value pairs in parallel, by the default ordering of the keys.
pub fn par_sort_unstable_keys(&mut self)
where
K: Ord,
{
self.with_entries(|entries| {
entries.par_sort_unstable_by(|a, b| K::cmp(&a.key, &b.key));
});
}
/// Sort the map's key-value pairs in place and in parallel, using the comparison
/// function `cmp`.
///
/// The comparison function receives two key and value pairs to compare (you
/// can sort by keys or values or their combination as needed).
pub fn par_sort_unstable_by<F>(&mut self, cmp: F)
where
F: Fn(&K, &V, &K, &V) -> Ordering + Sync,
{
self.with_entries(|entries| {
entries.par_sort_unstable_by(move |a, b| cmp(&a.key, &a.value, &b.key, &b.value));
});
}
/// Sort the key-value pairs of the map in parallel and return a by-value parallel
/// iterator of the key-value pairs with the result.
pub fn par_sorted_unstable_by<F>(self, cmp: F) -> IntoParIter<K, V>
where
F: Fn(&K, &V, &K, &V) -> Ordering + Sync,
{
let mut entries = self.into_entries();
entries.par_sort_unstable_by(move |a, b| cmp(&a.key, &a.value, &b.key, &b.value));
IntoParIter { entries }
}
}
/// A parallel mutable iterator over the values of a `IndexMap`.
///
/// This `struct` is created by the [`par_values_mut`] method on [`IndexMap`]. See its
/// documentation for more.
///
/// [`par_values_mut`]: ../struct.IndexMap.html#method.par_values_mut
/// [`IndexMap`]: ../struct.IndexMap.html
pub struct ParValuesMut<'a, K, V> {
entries: &'a mut [Bucket<K, V>],
}
impl<K, V: fmt::Debug> fmt::Debug for ParValuesMut<'_, K, V> {
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
let iter = self.entries.iter().map(Bucket::value_ref);
f.debug_list().entries(iter).finish()
}
}
impl<'a, K: Send, V: Send> ParallelIterator for ParValuesMut<'a, K, V> {
type Item = &'a mut V;
parallel_iterator_methods!(Bucket::value_mut);
}
impl<K: Send, V: Send> IndexedParallelIterator for ParValuesMut<'_, K, V> {
indexed_parallel_iterator_methods!(Bucket::value_mut);
}
/// Requires crate feature `"rayon"`.
impl<K, V, S> FromParallelIterator<(K, V)> for IndexMap<K, V, S>
where
K: Eq + Hash + Send,
V: Send,
S: BuildHasher + Default + Send,
{
fn from_par_iter<I>(iter: I) -> Self
where
I: IntoParallelIterator<Item = (K, V)>,
{
let list = collect(iter);
let len = list.iter().map(Vec::len).sum();
let mut map = Self::with_capacity_and_hasher(len, S::default());
for vec in list {
map.extend(vec);
}
map
}
}
/// Requires crate feature `"rayon"`.
impl<K, V, S> ParallelExtend<(K, V)> for IndexMap<K, V, S>
where
K: Eq + Hash + Send,
V: Send,
S: BuildHasher + Send,
{
fn par_extend<I>(&mut self, iter: I)
where
I: IntoParallelIterator<Item = (K, V)>,
{
for vec in collect(iter) {
self.extend(vec);
}
}
}
/// Requires crate feature `"rayon"`.
impl<'a, K: 'a, V: 'a, S> ParallelExtend<(&'a K, &'a V)> for IndexMap<K, V, S>
where
K: Copy + Eq + Hash + Send + Sync,
V: Copy + Send + Sync,
S: BuildHasher + Send,
{
fn par_extend<I>(&mut self, iter: I)
where
I: IntoParallelIterator<Item = (&'a K, &'a V)>,
{
for vec in collect(iter) {
self.extend(vec);
}
}
}
#[cfg(test)]
mod tests {
use super::*;
use std::string::String;
#[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.par_keys().count(), map.len());
assert_eq!(map.par_keys().count(), insert.len());
insert.par_iter().zip(map.par_keys()).for_each(|(a, b)| {
assert_eq!(a, b);
});
(0..insert.len())
.into_par_iter()
.zip(map.par_keys())
.for_each(|(i, k)| {
assert_eq!(map.get_index(i).unwrap().0, k);
});
}
#[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!(map_a.par_eq(&map_b));
map_b.swap_remove(&1);
assert!(!map_a.par_eq(&map_b));
map_b.insert(3, "3");
assert!(!map_a.par_eq(&map_b));
let map_c: IndexMap<_, String> =
map_b.into_par_iter().map(|(k, v)| (k, v.into())).collect();
assert!(!map_a.par_eq(&map_c));
assert!(!map_c.par_eq(&map_a));
}
#[test]
fn extend() {
let mut map = IndexMap::new();
map.par_extend(vec![(&1, &2), (&3, &4)]);
map.par_extend(vec![(5, 6)]);
assert_eq!(
map.into_par_iter().collect::<Vec<_>>(),
vec![(1, 2), (3, 4), (5, 6)]
);
}
#[test]
fn keys() {
let vec = vec![(1, 'a'), (2, 'b'), (3, 'c')];
let map: IndexMap<_, _> = vec.into_par_iter().collect();
let keys: Vec<_> = map.par_keys().copied().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_par_iter().collect();
let values: Vec<_> = map.par_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_par_iter().collect();
map.par_values_mut().for_each(|value| *value *= 2);
let values: Vec<_> = map.par_values().copied().collect();
assert_eq!(values.len(), 3);
assert!(values.contains(&2));
assert!(values.contains(&4));
assert!(values.contains(&6));
}
}

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clamav/libclamav_rust/.cargo/vendor/indexmap/src/rayon/mod.rs vendored Normal file
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use rayon::prelude::*;
use alloc::collections::LinkedList;
use crate::vec::Vec;
pub mod map;
pub mod set;
// This form of intermediate collection is also how Rayon collects `HashMap`.
// Note that the order will also be preserved!
fn collect<I: IntoParallelIterator>(iter: I) -> LinkedList<Vec<I::Item>> {
iter.into_par_iter()
.fold(Vec::new, |mut vec, elem| {
vec.push(elem);
vec
})
.map(|vec| {
let mut list = LinkedList::new();
list.push_back(vec);
list
})
.reduce(LinkedList::new, |mut list1, mut list2| {
list1.append(&mut list2);
list1
})
}

741
clamav/libclamav_rust/.cargo/vendor/indexmap/src/rayon/set.rs vendored Normal file
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//! Parallel iterator types for `IndexSet` with [rayon](https://docs.rs/rayon/1.0/rayon).
//!
//! You will rarely need to interact with this module directly unless you need to name one of the
//! iterator types.
//!
//! Requires crate feature `"rayon"`.
use super::collect;
use rayon::iter::plumbing::{Consumer, ProducerCallback, UnindexedConsumer};
use rayon::prelude::*;
use crate::vec::Vec;
use core::cmp::Ordering;
use core::fmt;
use core::hash::{BuildHasher, Hash};
use core::ops::RangeBounds;
use crate::Entries;
use crate::IndexSet;
type Bucket<T> = crate::Bucket<T, ()>;
/// Requires crate feature `"rayon"`.
impl<T, S> IntoParallelIterator for IndexSet<T, S>
where
T: Send,
{
type Item = T;
type Iter = IntoParIter<T>;
fn into_par_iter(self) -> Self::Iter {
IntoParIter {
entries: self.into_entries(),
}
}
}
/// A parallel owning iterator over the items of a `IndexSet`.
///
/// This `struct` is created by the [`into_par_iter`] method on [`IndexSet`]
/// (provided by rayon's `IntoParallelIterator` trait). See its documentation for more.
///
/// [`IndexSet`]: ../struct.IndexSet.html
/// [`into_par_iter`]: ../struct.IndexSet.html#method.into_par_iter
pub struct IntoParIter<T> {
entries: Vec<Bucket<T>>,
}
impl<T: fmt::Debug> fmt::Debug for IntoParIter<T> {
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
let iter = self.entries.iter().map(Bucket::key_ref);
f.debug_list().entries(iter).finish()
}
}
impl<T: Send> ParallelIterator for IntoParIter<T> {
type Item = T;
parallel_iterator_methods!(Bucket::key);
}
impl<T: Send> IndexedParallelIterator for IntoParIter<T> {
indexed_parallel_iterator_methods!(Bucket::key);
}
/// Requires crate feature `"rayon"`.
impl<'a, T, S> IntoParallelIterator for &'a IndexSet<T, S>
where
T: Sync,
{
type Item = &'a T;
type Iter = ParIter<'a, T>;
fn into_par_iter(self) -> Self::Iter {
ParIter {
entries: self.as_entries(),
}
}
}
/// A parallel iterator over the items of a `IndexSet`.
///
/// This `struct` is created by the [`par_iter`] method on [`IndexSet`]
/// (provided by rayon's `IntoParallelRefIterator` trait). See its documentation for more.
///
/// [`IndexSet`]: ../struct.IndexSet.html
/// [`par_iter`]: ../struct.IndexSet.html#method.par_iter
pub struct ParIter<'a, T> {
entries: &'a [Bucket<T>],
}
impl<T> Clone for ParIter<'_, T> {
fn clone(&self) -> Self {
ParIter { ..*self }
}
}
impl<T: fmt::Debug> fmt::Debug for ParIter<'_, T> {
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
let iter = self.entries.iter().map(Bucket::key_ref);
f.debug_list().entries(iter).finish()
}
}
impl<'a, T: Sync> ParallelIterator for ParIter<'a, T> {
type Item = &'a T;
parallel_iterator_methods!(Bucket::key_ref);
}
impl<T: Sync> IndexedParallelIterator for ParIter<'_, T> {
indexed_parallel_iterator_methods!(Bucket::key_ref);
}
/// Requires crate feature `"rayon"`.
impl<'a, T, S> ParallelDrainRange<usize> for &'a mut IndexSet<T, S>
where
T: Send,
{
type Item = T;
type Iter = ParDrain<'a, T>;
fn par_drain<R: RangeBounds<usize>>(self, range: R) -> Self::Iter {
ParDrain {
entries: self.map.core.par_drain(range),
}
}
}
/// A parallel draining iterator over the items of a `IndexSet`.
///
/// This `struct` is created by the [`par_drain`] method on [`IndexSet`]
/// (provided by rayon's `ParallelDrainRange` trait). See its documentation for more.
///
/// [`par_drain`]: ../struct.IndexSet.html#method.par_drain
/// [`IndexSet`]: ../struct.IndexSet.html
pub struct ParDrain<'a, T: Send> {
entries: rayon::vec::Drain<'a, Bucket<T>>,
}
impl<T: Send> ParallelIterator for ParDrain<'_, T> {
type Item = T;
parallel_iterator_methods!(Bucket::key);
}
impl<T: Send> IndexedParallelIterator for ParDrain<'_, T> {
indexed_parallel_iterator_methods!(Bucket::key);
}
/// Parallel iterator methods and other parallel methods.
///
/// The following methods **require crate feature `"rayon"`**.
///
/// See also the `IntoParallelIterator` implementations.
impl<T, S> IndexSet<T, S>
where
T: Hash + Eq + Sync,
S: BuildHasher + Sync,
{
/// Return a parallel iterator over the values that are in `self` but not `other`.
///
/// While parallel iterators can process items in any order, their relative order
/// in the `self` set is still preserved for operations like `reduce` and `collect`.
pub fn par_difference<'a, S2>(
&'a self,
other: &'a IndexSet<T, S2>,
) -> ParDifference<'a, T, S, S2>
where
S2: BuildHasher + Sync,
{
ParDifference {
set1: self,
set2: other,
}
}
/// Return a parallel iterator over the values that are in `self` or `other`,
/// but not in both.
///
/// While parallel iterators can process items in any order, their relative order
/// in the sets is still preserved for operations like `reduce` and `collect`.
/// Values from `self` are produced in their original order, followed by
/// values from `other` in their original order.
pub fn par_symmetric_difference<'a, S2>(
&'a self,
other: &'a IndexSet<T, S2>,
) -> ParSymmetricDifference<'a, T, S, S2>
where
S2: BuildHasher + Sync,
{
ParSymmetricDifference {
set1: self,
set2: other,
}
}
/// Return a parallel iterator over the values that are in both `self` and `other`.
///
/// While parallel iterators can process items in any order, their relative order
/// in the `self` set is still preserved for operations like `reduce` and `collect`.
pub fn par_intersection<'a, S2>(
&'a self,
other: &'a IndexSet<T, S2>,
) -> ParIntersection<'a, T, S, S2>
where
S2: BuildHasher + Sync,
{
ParIntersection {
set1: self,
set2: other,
}
}
/// Return a parallel iterator over all values that are in `self` or `other`.
///
/// While parallel iterators can process items in any order, their relative order
/// in the sets is still preserved for operations like `reduce` and `collect`.
/// Values from `self` are produced in their original order, followed by
/// values that are unique to `other` in their original order.
pub fn par_union<'a, S2>(&'a self, other: &'a IndexSet<T, S2>) -> ParUnion<'a, T, S, S2>
where
S2: BuildHasher + Sync,
{
ParUnion {
set1: self,
set2: other,
}
}
/// Returns `true` if `self` contains all of the same values as `other`,
/// regardless of each set's indexed order, determined in parallel.
pub fn par_eq<S2>(&self, other: &IndexSet<T, S2>) -> bool
where
S2: BuildHasher + Sync,
{
self.len() == other.len() && self.par_is_subset(other)
}
/// Returns `true` if `self` has no elements in common with `other`,
/// determined in parallel.
pub fn par_is_disjoint<S2>(&self, other: &IndexSet<T, S2>) -> bool
where
S2: BuildHasher + Sync,
{
if self.len() <= other.len() {
self.par_iter().all(move |value| !other.contains(value))
} else {
other.par_iter().all(move |value| !self.contains(value))
}
}
/// Returns `true` if all elements of `other` are contained in `self`,
/// determined in parallel.
pub fn par_is_superset<S2>(&self, other: &IndexSet<T, S2>) -> bool
where
S2: BuildHasher + Sync,
{
other.par_is_subset(self)
}
/// Returns `true` if all elements of `self` are contained in `other`,
/// determined in parallel.
pub fn par_is_subset<S2>(&self, other: &IndexSet<T, S2>) -> bool
where
S2: BuildHasher + Sync,
{
self.len() <= other.len() && self.par_iter().all(move |value| other.contains(value))
}
}
/// A parallel iterator producing elements in the difference of `IndexSet`s.
///
/// This `struct` is created by the [`par_difference`] method on [`IndexSet`].
/// See its documentation for more.
///
/// [`IndexSet`]: ../struct.IndexSet.html
/// [`par_difference`]: ../struct.IndexSet.html#method.par_difference
pub struct ParDifference<'a, T, S1, S2> {
set1: &'a IndexSet<T, S1>,
set2: &'a IndexSet<T, S2>,
}
impl<T, S1, S2> Clone for ParDifference<'_, T, S1, S2> {
fn clone(&self) -> Self {
ParDifference { ..*self }
}
}
impl<T, S1, S2> fmt::Debug for ParDifference<'_, T, S1, S2>
where
T: fmt::Debug + Eq + Hash,
S1: BuildHasher,
S2: BuildHasher,
{
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
f.debug_list()
.entries(self.set1.difference(self.set2))
.finish()
}
}
impl<'a, T, S1, S2> ParallelIterator for ParDifference<'a, T, S1, S2>
where
T: Hash + Eq + Sync,
S1: BuildHasher + Sync,
S2: BuildHasher + Sync,
{
type Item = &'a T;
fn drive_unindexed<C>(self, consumer: C) -> C::Result
where
C: UnindexedConsumer<Self::Item>,
{
let Self { set1, set2 } = self;
set1.par_iter()
.filter(move |&item| !set2.contains(item))
.drive_unindexed(consumer)
}
}
/// A parallel iterator producing elements in the intersection of `IndexSet`s.
///
/// This `struct` is created by the [`par_intersection`] method on [`IndexSet`].
/// See its documentation for more.
///
/// [`IndexSet`]: ../struct.IndexSet.html
/// [`par_intersection`]: ../struct.IndexSet.html#method.par_intersection
pub struct ParIntersection<'a, T, S1, S2> {
set1: &'a IndexSet<T, S1>,
set2: &'a IndexSet<T, S2>,
}
impl<T, S1, S2> Clone for ParIntersection<'_, T, S1, S2> {
fn clone(&self) -> Self {
ParIntersection { ..*self }
}
}
impl<T, S1, S2> fmt::Debug for ParIntersection<'_, T, S1, S2>
where
T: fmt::Debug + Eq + Hash,
S1: BuildHasher,
S2: BuildHasher,
{
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
f.debug_list()
.entries(self.set1.intersection(self.set2))
.finish()
}
}
impl<'a, T, S1, S2> ParallelIterator for ParIntersection<'a, T, S1, S2>
where
T: Hash + Eq + Sync,
S1: BuildHasher + Sync,
S2: BuildHasher + Sync,
{
type Item = &'a T;
fn drive_unindexed<C>(self, consumer: C) -> C::Result
where
C: UnindexedConsumer<Self::Item>,
{
let Self { set1, set2 } = self;
set1.par_iter()
.filter(move |&item| set2.contains(item))
.drive_unindexed(consumer)
}
}
/// A parallel iterator producing elements in the symmetric difference of `IndexSet`s.
///
/// This `struct` is created by the [`par_symmetric_difference`] method on
/// [`IndexSet`]. See its documentation for more.
///
/// [`IndexSet`]: ../struct.IndexSet.html
/// [`par_symmetric_difference`]: ../struct.IndexSet.html#method.par_symmetric_difference
pub struct ParSymmetricDifference<'a, T, S1, S2> {
set1: &'a IndexSet<T, S1>,
set2: &'a IndexSet<T, S2>,
}
impl<T, S1, S2> Clone for ParSymmetricDifference<'_, T, S1, S2> {
fn clone(&self) -> Self {
ParSymmetricDifference { ..*self }
}
}
impl<T, S1, S2> fmt::Debug for ParSymmetricDifference<'_, T, S1, S2>
where
T: fmt::Debug + Eq + Hash,
S1: BuildHasher,
S2: BuildHasher,
{
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
f.debug_list()
.entries(self.set1.symmetric_difference(self.set2))
.finish()
}
}
impl<'a, T, S1, S2> ParallelIterator for ParSymmetricDifference<'a, T, S1, S2>
where
T: Hash + Eq + Sync,
S1: BuildHasher + Sync,
S2: BuildHasher + Sync,
{
type Item = &'a T;
fn drive_unindexed<C>(self, consumer: C) -> C::Result
where
C: UnindexedConsumer<Self::Item>,
{
let Self { set1, set2 } = self;
set1.par_difference(set2)
.chain(set2.par_difference(set1))
.drive_unindexed(consumer)
}
}
/// A parallel iterator producing elements in the union of `IndexSet`s.
///
/// This `struct` is created by the [`par_union`] method on [`IndexSet`].
/// See its documentation for more.
///
/// [`IndexSet`]: ../struct.IndexSet.html
/// [`par_union`]: ../struct.IndexSet.html#method.par_union
pub struct ParUnion<'a, T, S1, S2> {
set1: &'a IndexSet<T, S1>,
set2: &'a IndexSet<T, S2>,
}
impl<T, S1, S2> Clone for ParUnion<'_, T, S1, S2> {
fn clone(&self) -> Self {
ParUnion { ..*self }
}
}
impl<T, S1, S2> fmt::Debug for ParUnion<'_, T, S1, S2>
where
T: fmt::Debug + Eq + Hash,
S1: BuildHasher,
S2: BuildHasher,
{
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
f.debug_list().entries(self.set1.union(self.set2)).finish()
}
}
impl<'a, T, S1, S2> ParallelIterator for ParUnion<'a, T, S1, S2>
where
T: Hash + Eq + Sync,
S1: BuildHasher + Sync,
S2: BuildHasher + Sync,
{
type Item = &'a T;
fn drive_unindexed<C>(self, consumer: C) -> C::Result
where
C: UnindexedConsumer<Self::Item>,
{
let Self { set1, set2 } = self;
set1.par_iter()
.chain(set2.par_difference(set1))
.drive_unindexed(consumer)
}
}
/// Parallel sorting methods.
///
/// The following methods **require crate feature `"rayon"`**.
impl<T, S> IndexSet<T, S>
where
T: Hash + Eq + Send,
S: BuildHasher + Send,
{
/// Sort the set’s values in parallel by their default ordering.
pub fn par_sort(&mut self)
where
T: Ord,
{
self.with_entries(|entries| {
entries.par_sort_by(|a, b| T::cmp(&a.key, &b.key));
});
}
/// Sort the set’s values in place and in parallel, using the comparison function `cmp`.
pub fn par_sort_by<F>(&mut self, cmp: F)
where
F: Fn(&T, &T) -> Ordering + Sync,
{
self.with_entries(|entries| {
entries.par_sort_by(move |a, b| cmp(&a.key, &b.key));
});
}
/// Sort the values of the set in parallel and return a by-value parallel iterator of
/// the values with the result.
pub fn par_sorted_by<F>(self, cmp: F) -> IntoParIter<T>
where
F: Fn(&T, &T) -> Ordering + Sync,
{
let mut entries = self.into_entries();
entries.par_sort_by(move |a, b| cmp(&a.key, &b.key));
IntoParIter { entries }
}
/// Sort the set's values in parallel by their default ordering.
pub fn par_sort_unstable(&mut self)
where
T: Ord,
{
self.with_entries(|entries| {
entries.par_sort_unstable_by(|a, b| T::cmp(&a.key, &b.key));
});
}
/// Sort the set’s values in place and in parallel, using the comparison function `cmp`.
pub fn par_sort_unstable_by<F>(&mut self, cmp: F)
where
F: Fn(&T, &T) -> Ordering + Sync,
{
self.with_entries(|entries| {
entries.par_sort_unstable_by(move |a, b| cmp(&a.key, &b.key));
});
}
/// Sort the values of the set in parallel and return a by-value parallel iterator of
/// the values with the result.
pub fn par_sorted_unstable_by<F>(self, cmp: F) -> IntoParIter<T>
where
F: Fn(&T, &T) -> Ordering + Sync,
{
let mut entries = self.into_entries();
entries.par_sort_unstable_by(move |a, b| cmp(&a.key, &b.key));
IntoParIter { entries }
}
}
/// Requires crate feature `"rayon"`.
impl<T, S> FromParallelIterator<T> for IndexSet<T, S>
where
T: Eq + Hash + Send,
S: BuildHasher + Default + Send,
{
fn from_par_iter<I>(iter: I) -> Self
where
I: IntoParallelIterator<Item = T>,
{
let list = collect(iter);
let len = list.iter().map(Vec::len).sum();
let mut set = Self::with_capacity_and_hasher(len, S::default());
for vec in list {
set.extend(vec);
}
set
}
}
/// Requires crate feature `"rayon"`.
impl<T, S> ParallelExtend<T> for IndexSet<T, S>
where
T: Eq + Hash + Send,
S: BuildHasher + Send,
{
fn par_extend<I>(&mut self, iter: I)
where
I: IntoParallelIterator<Item = T>,
{
for vec in collect(iter) {
self.extend(vec);
}
}
}
/// Requires crate feature `"rayon"`.
impl<'a, T: 'a, S> ParallelExtend<&'a T> for IndexSet<T, S>
where
T: Copy + Eq + Hash + Send + Sync,
S: BuildHasher + Send,
{
fn par_extend<I>(&mut self, iter: I)
where
I: IntoParallelIterator<Item = &'a T>,
{
for vec in collect(iter) {
self.extend(vec);
}
}
}
#[cfg(test)]
mod tests {
use super::*;
#[test]
fn insert_order() {
let insert = [0, 4, 2, 12, 8, 7, 11, 5, 3, 17, 19, 22, 23];
let mut set = IndexSet::new();
for &elt in &insert {
set.insert(elt);
}
assert_eq!(set.par_iter().count(), set.len());
assert_eq!(set.par_iter().count(), insert.len());
insert.par_iter().zip(&set).for_each(|(a, b)| {
assert_eq!(a, b);
});
(0..insert.len())
.into_par_iter()
.zip(&set)
.for_each(|(i, v)| {
assert_eq!(set.get_index(i).unwrap(), v);
});
}
#[test]
fn partial_eq_and_eq() {
let mut set_a = IndexSet::new();
set_a.insert(1);
set_a.insert(2);
let mut set_b = set_a.clone();
assert!(set_a.par_eq(&set_b));
set_b.swap_remove(&1);
assert!(!set_a.par_eq(&set_b));
set_b.insert(3);
assert!(!set_a.par_eq(&set_b));
let set_c: IndexSet<_> = set_b.into_par_iter().collect();
assert!(!set_a.par_eq(&set_c));
assert!(!set_c.par_eq(&set_a));
}
#[test]
fn extend() {
let mut set = IndexSet::new();
set.par_extend(vec![&1, &2, &3, &4]);
set.par_extend(vec![5, 6]);
assert_eq!(
set.into_par_iter().collect::<Vec<_>>(),
vec![1, 2, 3, 4, 5, 6]
);
}
#[test]
fn comparisons() {
let set_a: IndexSet<_> = (0..3).collect();
let set_b: IndexSet<_> = (3..6).collect();
let set_c: IndexSet<_> = (0..6).collect();
let set_d: IndexSet<_> = (3..9).collect();
assert!(!set_a.par_is_disjoint(&set_a));
assert!(set_a.par_is_subset(&set_a));
assert!(set_a.par_is_superset(&set_a));
assert!(set_a.par_is_disjoint(&set_b));
assert!(set_b.par_is_disjoint(&set_a));
assert!(!set_a.par_is_subset(&set_b));
assert!(!set_b.par_is_subset(&set_a));
assert!(!set_a.par_is_superset(&set_b));
assert!(!set_b.par_is_superset(&set_a));
assert!(!set_a.par_is_disjoint(&set_c));
assert!(!set_c.par_is_disjoint(&set_a));
assert!(set_a.par_is_subset(&set_c));
assert!(!set_c.par_is_subset(&set_a));
assert!(!set_a.par_is_superset(&set_c));
assert!(set_c.par_is_superset(&set_a));
assert!(!set_c.par_is_disjoint(&set_d));
assert!(!set_d.par_is_disjoint(&set_c));
assert!(!set_c.par_is_subset(&set_d));
assert!(!set_d.par_is_subset(&set_c));
assert!(!set_c.par_is_superset(&set_d));
assert!(!set_d.par_is_superset(&set_c));
}
#[test]
fn iter_comparisons() {
use std::iter::empty;
fn check<'a, I1, I2>(iter1: I1, iter2: I2)
where
I1: ParallelIterator<Item = &'a i32>,
I2: Iterator<Item = i32>,
{
let v1: Vec<_> = iter1.copied().collect();
let v2: Vec<_> = iter2.collect();
assert_eq!(v1, v2);
}
let set_a: IndexSet<_> = (0..3).collect();
let set_b: IndexSet<_> = (3..6).collect();
let set_c: IndexSet<_> = (0..6).collect();
let set_d: IndexSet<_> = (3..9).rev().collect();
check(set_a.par_difference(&set_a), empty());
check(set_a.par_symmetric_difference(&set_a), empty());
check(set_a.par_intersection(&set_a), 0..3);
check(set_a.par_union(&set_a), 0..3);
check(set_a.par_difference(&set_b), 0..3);
check(set_b.par_difference(&set_a), 3..6);
check(set_a.par_symmetric_difference(&set_b), 0..6);
check(set_b.par_symmetric_difference(&set_a), (3..6).chain(0..3));
check(set_a.par_intersection(&set_b), empty());
check(set_b.par_intersection(&set_a), empty());
check(set_a.par_union(&set_b), 0..6);
check(set_b.par_union(&set_a), (3..6).chain(0..3));
check(set_a.par_difference(&set_c), empty());
check(set_c.par_difference(&set_a), 3..6);
check(set_a.par_symmetric_difference(&set_c), 3..6);
check(set_c.par_symmetric_difference(&set_a), 3..6);
check(set_a.par_intersection(&set_c), 0..3);
check(set_c.par_intersection(&set_a), 0..3);
check(set_a.par_union(&set_c), 0..6);
check(set_c.par_union(&set_a), 0..6);
check(set_c.par_difference(&set_d), 0..3);
check(set_d.par_difference(&set_c), (6..9).rev());
check(
set_c.par_symmetric_difference(&set_d),
(0..3).chain((6..9).rev()),
);
check(
set_d.par_symmetric_difference(&set_c),
(6..9).rev().chain(0..3),
);
check(set_c.par_intersection(&set_d), 3..6);
check(set_d.par_intersection(&set_c), (3..6).rev());
check(set_c.par_union(&set_d), (0..6).chain((6..9).rev()));
check(set_d.par_union(&set_c), (3..9).rev().chain(0..3));
}
}

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clamav/libclamav_rust/.cargo/vendor/indexmap/src/rustc.rs vendored Normal file
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@@ -0,0 +1,158 @@
//! Minimal support for `rustc-rayon`, not intended for general use.
use crate::vec::Vec;
use crate::{Bucket, Entries, IndexMap, IndexSet};
use rustc_rayon::iter::plumbing::{Consumer, ProducerCallback, UnindexedConsumer};
use rustc_rayon::iter::{IndexedParallelIterator, IntoParallelIterator, ParallelIterator};
mod map {
use super::*;
impl<K, V, S> IntoParallelIterator for IndexMap<K, V, S>
where
K: Send,
V: Send,
{
type Item = (K, V);
type Iter = IntoParIter<K, V>;
fn into_par_iter(self) -> Self::Iter {
IntoParIter {
entries: self.into_entries(),
}
}
}
pub struct IntoParIter<K, V> {
entries: Vec<Bucket<K, V>>,
}
impl<K: Send, V: Send> ParallelIterator for IntoParIter<K, V> {
type Item = (K, V);
parallel_iterator_methods!(Bucket::key_value);
}
impl<K: Send, V: Send> IndexedParallelIterator for IntoParIter<K, V> {
indexed_parallel_iterator_methods!(Bucket::key_value);
}
impl<'a, K, V, S> IntoParallelIterator for &'a IndexMap<K, V, S>
where
K: Sync,
V: Sync,
{
type Item = (&'a K, &'a V);
type Iter = ParIter<'a, K, V>;
fn into_par_iter(self) -> Self::Iter {
ParIter {
entries: self.as_entries(),
}
}
}
pub struct ParIter<'a, K, V> {
entries: &'a [Bucket<K, V>],
}
impl<'a, K: Sync, V: Sync> ParallelIterator for ParIter<'a, K, V> {
type Item = (&'a K, &'a V);
parallel_iterator_methods!(Bucket::refs);
}
impl<K: Sync, V: Sync> IndexedParallelIterator for ParIter<'_, K, V> {
indexed_parallel_iterator_methods!(Bucket::refs);
}
impl<'a, K, V, S> IntoParallelIterator for &'a mut IndexMap<K, V, S>
where
K: Sync + Send,
V: Send,
{
type Item = (&'a K, &'a mut V);
type Iter = ParIterMut<'a, K, V>;
fn into_par_iter(self) -> Self::Iter {
ParIterMut {
entries: self.as_entries_mut(),
}
}
}
pub struct ParIterMut<'a, K, V> {
entries: &'a mut [Bucket<K, V>],
}
impl<'a, K: Sync + Send, V: Send> ParallelIterator for ParIterMut<'a, K, V> {
type Item = (&'a K, &'a mut V);
parallel_iterator_methods!(Bucket::ref_mut);
}
impl<K: Sync + Send, V: Send> IndexedParallelIterator for ParIterMut<'_, K, V> {
indexed_parallel_iterator_methods!(Bucket::ref_mut);
}
}
mod set {
use super::*;
impl<T, S> IntoParallelIterator for IndexSet<T, S>
where
T: Send,
{
type Item = T;
type Iter = IntoParIter<T>;
fn into_par_iter(self) -> Self::Iter {
IntoParIter {
entries: self.into_entries(),
}
}
}
pub struct IntoParIter<T> {
entries: Vec<Bucket<T, ()>>,
}
impl<T: Send> ParallelIterator for IntoParIter<T> {
type Item = T;
parallel_iterator_methods!(Bucket::key);
}
impl<T: Send> IndexedParallelIterator for IntoParIter<T> {
indexed_parallel_iterator_methods!(Bucket::key);
}
impl<'a, T, S> IntoParallelIterator for &'a IndexSet<T, S>
where
T: Sync,
{
type Item = &'a T;
type Iter = ParIter<'a, T>;
fn into_par_iter(self) -> Self::Iter {
ParIter {
entries: self.as_entries(),
}
}
}
pub struct ParIter<'a, T> {
entries: &'a [Bucket<T, ()>],
}
impl<'a, T: Sync> ParallelIterator for ParIter<'a, T> {
type Item = &'a T;
parallel_iterator_methods!(Bucket::key_ref);
}
impl<T: Sync> IndexedParallelIterator for ParIter<'_, T> {
indexed_parallel_iterator_methods!(Bucket::key_ref);
}
}

155
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use serde::de::value::{MapDeserializer, SeqDeserializer};
use serde::de::{
Deserialize, Deserializer, Error, IntoDeserializer, MapAccess, SeqAccess, Visitor,
};
use serde::ser::{Serialize, Serializer};
use core::fmt::{self, Formatter};
use core::hash::{BuildHasher, Hash};
use core::marker::PhantomData;
use crate::IndexMap;
/// Requires crate feature `"serde"` or `"serde-1"`
impl<K, V, S> Serialize for IndexMap<K, V, S>
where
K: Serialize + Hash + Eq,
V: Serialize,
S: BuildHasher,
{
fn serialize<T>(&self, serializer: T) -> Result<T::Ok, T::Error>
where
T: Serializer,
{
serializer.collect_map(self)
}
}
struct IndexMapVisitor<K, V, S>(PhantomData<(K, V, S)>);
impl<'de, K, V, S> Visitor<'de> for IndexMapVisitor<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 map")
}
fn visit_map<A>(self, mut map: A) -> Result<Self::Value, A::Error>
where
A: MapAccess<'de>,
{
let mut values =
IndexMap::with_capacity_and_hasher(map.size_hint().unwrap_or(0), S::default());
while let Some((key, value)) = map.next_entry()? {
values.insert(key, value);
}
Ok(values)
}
}
/// Requires crate feature `"serde"` or `"serde-1"`
impl<'de, K, V, S> Deserialize<'de> for IndexMap<K, V, S>
where
K: Deserialize<'de> + Eq + Hash,
V: Deserialize<'de>,
S: Default + BuildHasher,
{
fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>
where
D: Deserializer<'de>,
{
deserializer.deserialize_map(IndexMapVisitor(PhantomData))
}
}
impl<'de, K, V, S, E> IntoDeserializer<'de, E> for IndexMap<K, V, S>
where
K: IntoDeserializer<'de, E> + Eq + Hash,
V: IntoDeserializer<'de, E>,
S: BuildHasher,
E: Error,
{
type Deserializer = MapDeserializer<'de, <Self as IntoIterator>::IntoIter, E>;
fn into_deserializer(self) -> Self::Deserializer {
MapDeserializer::new(self.into_iter())
}
}
use crate::IndexSet;
/// Requires crate feature `"serde"` or `"serde-1"`
impl<T, S> Serialize for IndexSet<T, S>
where
T: Serialize + Hash + Eq,
S: BuildHasher,
{
fn serialize<Se>(&self, serializer: Se) -> Result<Se::Ok, Se::Error>
where
Se: Serializer,
{
serializer.collect_seq(self)
}
}
struct IndexSetVisitor<T, S>(PhantomData<(T, S)>);
impl<'de, T, S> Visitor<'de> for IndexSetVisitor<T, S>
where
T: Deserialize<'de> + Eq + Hash,
S: Default + BuildHasher,
{
type Value = IndexSet<T, S>;
fn expecting(&self, formatter: &mut Formatter<'_>) -> fmt::Result {
write!(formatter, "a set")
}
fn visit_seq<A>(self, mut seq: A) -> Result<Self::Value, A::Error>
where
A: SeqAccess<'de>,
{
let mut values =
IndexSet::with_capacity_and_hasher(seq.size_hint().unwrap_or(0), S::default());
while let Some(value) = seq.next_element()? {
values.insert(value);
}
Ok(values)
}
}
/// Requires crate feature `"serde"` or `"serde-1"`
impl<'de, T, S> Deserialize<'de> for IndexSet<T, S>
where
T: Deserialize<'de> + Eq + Hash,
S: Default + BuildHasher,
{
fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>
where
D: Deserializer<'de>,
{
deserializer.deserialize_seq(IndexSetVisitor(PhantomData))
}
}
impl<'de, T, S, E> IntoDeserializer<'de, E> for IndexSet<T, S>
where
T: IntoDeserializer<'de, E> + Eq + Hash,
S: BuildHasher,
E: Error,
{
type Deserializer = SeqDeserializer<<Self as IntoIterator>::IntoIter, E>;
fn into_deserializer(self) -> Self::Deserializer {
SeqDeserializer::new(self.into_iter())
}
}

112
clamav/libclamav_rust/.cargo/vendor/indexmap/src/serde_seq.rs vendored Normal file
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//! 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::serde_seq")]
//! map: IndexMap<i32, u64>,
//! // ...
//! }
//! ```
//!
//! Requires crate feature `"serde"` or `"serde-1"`
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::IndexMap;
/// 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::serde_seq::serialize")]
/// map: IndexMap<i32, u64>,
/// // ...
/// }
/// ```
///
/// Requires crate feature `"serde"` or `"serde-1"`
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::serde_seq::deserialize")]
/// map: IndexMap<i32, u64>,
/// // ...
/// }
/// ```
///
/// Requires crate feature `"serde"` or `"serde-1"`
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))
}

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clamav/libclamav_rust/.cargo/vendor/indexmap/src/set.rs vendored Normal file
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31
clamav/libclamav_rust/.cargo/vendor/indexmap/src/util.rs vendored Normal file
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use core::ops::{Bound, Range, RangeBounds};
pub(crate) fn third<A, B, C>(t: (A, B, C)) -> C {
t.2
}
pub(crate) fn simplify_range<R>(range: R, len: usize) -> Range<usize>
where
R: RangeBounds<usize>,
{
let start = match range.start_bound() {
Bound::Unbounded => 0,
Bound::Included(&i) if i <= len => i,
Bound::Excluded(&i) if i < len => i + 1,
bound => panic!("range start {:?} should be <= length {}", bound, len),
};
let end = match range.end_bound() {
Bound::Unbounded => len,
Bound::Excluded(&i) if i <= len => i,
Bound::Included(&i) if i < len => i + 1,
bound => panic!("range end {:?} should be <= length {}", bound, len),
};
if start > end {
panic!(
"range start {:?} should be <= range end {:?}",
range.start_bound(),
range.end_bound()
);
}
start..end
}

53
clamav/libclamav_rust/.cargo/vendor/indexmap/tests/equivalent_trait.rs vendored Normal file
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use indexmap::indexmap;
use indexmap::Equivalent;
use std::hash::Hash;
#[derive(Debug, Hash)]
pub struct Pair<A, B>(pub A, pub B);
impl<A, B, C, D> PartialEq<(A, B)> for Pair<C, D>
where
C: PartialEq<A>,
D: PartialEq<B>,
{
fn eq(&self, rhs: &(A, B)) -> bool {
self.0 == rhs.0 && self.1 == rhs.1
}
}
impl<A, B, X> Equivalent<X> for Pair<A, B>
where
Pair<A, B>: PartialEq<X>,
A: Hash + Eq,
B: Hash + Eq,
{
fn equivalent(&self, other: &X) -> bool {
*self == *other
}
}
#[test]
fn test_lookup() {
let s = String::from;
let map = indexmap! {
(s("a"), s("b")) => 1,
(s("a"), s("x")) => 2,
};
assert!(map.contains_key(&Pair("a", "b")));
assert!(!map.contains_key(&Pair("b", "a")));
}
#[test]
fn test_string_str() {
let s = String::from;
let mut map = indexmap! {
s("a") => 1, s("b") => 2,
s("x") => 3, s("y") => 4,
};
assert!(map.contains_key("a"));
assert!(!map.contains_key("z"));
assert_eq!(map.swap_remove("b"), Some(2));
}

19
clamav/libclamav_rust/.cargo/vendor/indexmap/tests/macros_full_path.rs vendored Normal file
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#[test]
fn test_create_map() {
let _m = indexmap::indexmap! {
1 => 2,
7 => 1,
2 => 2,
3 => 3,
};
}
#[test]
fn test_create_set() {
let _s = indexmap::indexset! {
1,
7,
2,
3,
};
}

573
clamav/libclamav_rust/.cargo/vendor/indexmap/tests/quick.rs vendored Normal file
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use indexmap::{IndexMap, IndexSet};
use itertools::Itertools;
use quickcheck::Arbitrary;
use quickcheck::Gen;
use quickcheck::QuickCheck;
use quickcheck::TestResult;
use fnv::FnvHasher;
use std::hash::{BuildHasher, BuildHasherDefault};
type FnvBuilder = BuildHasherDefault<FnvHasher>;
type IndexMapFnv<K, V> = IndexMap<K, V, FnvBuilder>;
use std::cmp::min;
use std::collections::HashMap;
use std::collections::HashSet;
use std::fmt::Debug;
use std::hash::Hash;
use std::ops::Bound;
use std::ops::Deref;
use indexmap::map::Entry as OEntry;
use std::collections::hash_map::Entry as HEntry;
fn set<'a, T: 'a, I>(iter: I) -> HashSet<T>
where
I: IntoIterator<Item = &'a T>,
T: Copy + Hash + Eq,
{
iter.into_iter().copied().collect()
}
fn indexmap<'a, T: 'a, I>(iter: I) -> IndexMap<T, ()>
where
I: IntoIterator<Item = &'a T>,
T: Copy + Hash + Eq,
{
IndexMap::from_iter(iter.into_iter().copied().map(|k| (k, ())))
}
// Helper macro to allow us to use smaller quickcheck limits under miri.
macro_rules! quickcheck_limit {
(@as_items $($i:item)*) => ($($i)*);
{
$(
$(#[$m:meta])*
fn $fn_name:ident($($arg_name:ident : $arg_ty:ty),*) -> $ret:ty {
$($code:tt)*
}
)*
} => (
quickcheck::quickcheck! {
@as_items
$(
#[test]
$(#[$m])*
fn $fn_name() {
fn prop($($arg_name: $arg_ty),*) -> $ret {
$($code)*
}
let mut quickcheck = QuickCheck::new();
if cfg!(miri) {
quickcheck = quickcheck
.gen(Gen::new(10))
.tests(10)
.max_tests(100);
}
quickcheck.quickcheck(prop as fn($($arg_ty),*) -> $ret);
}
)*
}
)
}
quickcheck_limit! {
fn contains(insert: Vec<u32>) -> bool {
let mut map = IndexMap::new();
for &key in &insert {
map.insert(key, ());
}
insert.iter().all(|&key| map.get(&key).is_some())
}
fn contains_not(insert: Vec<u8>, not: Vec<u8>) -> bool {
let mut map = IndexMap::new();
for &key in &insert {
map.insert(key, ());
}
let nots = &set(&not) - &set(&insert);
nots.iter().all(|&key| map.get(&key).is_none())
}
fn insert_remove(insert: Vec<u8>, remove: Vec<u8>) -> bool {
let mut map = IndexMap::new();
for &key in &insert {
map.insert(key, ());
}
for &key in &remove {
map.swap_remove(&key);
}
let elements = &set(&insert) - &set(&remove);
map.len() == elements.len() && map.iter().count() == elements.len() &&
elements.iter().all(|k| map.get(k).is_some())
}
fn insertion_order(insert: Vec<u32>) -> bool {
let mut map = IndexMap::new();
for &key in &insert {
map.insert(key, ());
}
itertools::assert_equal(insert.iter().unique(), map.keys());
true
}
fn pop(insert: Vec<u8>) -> bool {
let mut map = IndexMap::new();
for &key in &insert {
map.insert(key, ());
}
let mut pops = Vec::new();
while let Some((key, _v)) = map.pop() {
pops.push(key);
}
pops.reverse();
itertools::assert_equal(insert.iter().unique(), &pops);
true
}
fn with_cap(template: Vec<()>) -> bool {
let cap = template.len();
let map: IndexMap<u8, u8> = IndexMap::with_capacity(cap);
println!("wish: {}, got: {} (diff: {})", cap, map.capacity(), map.capacity() as isize - cap as isize);
map.capacity() >= cap
}
fn drain_full(insert: Vec<u8>) -> bool {
let mut map = IndexMap::new();
for &key in &insert {
map.insert(key, ());
}
let mut clone = map.clone();
let drained = clone.drain(..);
for (key, _) in drained {
map.swap_remove(&key);
}
map.is_empty()
}
fn drain_bounds(insert: Vec<u8>, range: (Bound<usize>, Bound<usize>)) -> TestResult {
let mut map = IndexMap::new();
for &key in &insert {
map.insert(key, ());
}
// First see if `Vec::drain` is happy with this range.
let result = std::panic::catch_unwind(|| {
let mut keys: Vec<u8> = map.keys().copied().collect();
keys.drain(range);
keys
});
if let Ok(keys) = result {
map.drain(range);
// Check that our `drain` matches the same key order.
assert!(map.keys().eq(&keys));
// Check that hash lookups all work too.
assert!(keys.iter().all(|key| map.contains_key(key)));
TestResult::passed()
} else {
// If `Vec::drain` panicked, so should we.
TestResult::must_fail(move || { map.drain(range); })
}
}
fn shift_remove(insert: Vec<u8>, remove: Vec<u8>) -> bool {
let mut map = IndexMap::new();
for &key in &insert {
map.insert(key, ());
}
for &key in &remove {
map.shift_remove(&key);
}
let elements = &set(&insert) - &set(&remove);
// Check that order is preserved after removals
let mut iter = map.keys();
for &key in insert.iter().unique() {
if elements.contains(&key) {
assert_eq!(Some(&key), iter.next());
}
}
map.len() == elements.len() && map.iter().count() == elements.len() &&
elements.iter().all(|k| map.get(k).is_some())
}
fn indexing(insert: Vec<u8>) -> bool {
let mut map: IndexMap<_, _> = insert.into_iter().map(|x| (x, x)).collect();
let set: IndexSet<_> = map.keys().copied().collect();
assert_eq!(map.len(), set.len());
for (i, &key) in set.iter().enumerate() {
assert_eq!(map.get_index(i), Some((&key, &key)));
assert_eq!(set.get_index(i), Some(&key));
assert_eq!(map[i], key);
assert_eq!(set[i], key);
*map.get_index_mut(i).unwrap().1 >>= 1;
map[i] <<= 1;
}
set.iter().enumerate().all(|(i, &key)| {
let value = key & !1;
map[&key] == value && map[i] == value
})
}
// Use `u8` test indices so quickcheck is less likely to go out of bounds.
fn swap_indices(vec: Vec<u8>, a: u8, b: u8) -> TestResult {
let mut set = IndexSet::<u8>::from_iter(vec);
let a = usize::from(a);
let b = usize::from(b);
if a >= set.len() || b >= set.len() {
return TestResult::discard();
}
let mut vec = Vec::from_iter(set.iter().cloned());
vec.swap(a, b);
set.swap_indices(a, b);
// Check both iteration order and hash lookups
assert!(set.iter().eq(vec.iter()));
assert!(vec.iter().enumerate().all(|(i, x)| {
set.get_index_of(x) == Some(i)
}));
TestResult::passed()
}
// Use `u8` test indices so quickcheck is less likely to go out of bounds.
fn move_index(vec: Vec<u8>, from: u8, to: u8) -> TestResult {
let mut set = IndexSet::<u8>::from_iter(vec);
let from = usize::from(from);
let to = usize::from(to);
if from >= set.len() || to >= set.len() {
return TestResult::discard();
}
let mut vec = Vec::from_iter(set.iter().cloned());
let x = vec.remove(from);
vec.insert(to, x);
set.move_index(from, to);
// Check both iteration order and hash lookups
assert!(set.iter().eq(vec.iter()));
assert!(vec.iter().enumerate().all(|(i, x)| {
set.get_index_of(x) == Some(i)
}));
TestResult::passed()
}
}
use crate::Op::*;
#[derive(Copy, Clone, Debug)]
enum Op<K, V> {
Add(K, V),
Remove(K),
AddEntry(K, V),
RemoveEntry(K),
}
impl<K, V> Arbitrary for Op<K, V>
where
K: Arbitrary,
V: Arbitrary,
{
fn arbitrary(g: &mut Gen) -> Self {
match u32::arbitrary(g) % 4 {
0 => Add(K::arbitrary(g), V::arbitrary(g)),
1 => AddEntry(K::arbitrary(g), V::arbitrary(g)),
2 => Remove(K::arbitrary(g)),
_ => RemoveEntry(K::arbitrary(g)),
}
}
}
fn do_ops<K, V, S>(ops: &[Op<K, V>], a: &mut IndexMap<K, V, S>, b: &mut HashMap<K, V>)
where
K: Hash + Eq + Clone,
V: Clone,
S: BuildHasher,
{
for op in ops {
match *op {
Add(ref k, ref v) => {
a.insert(k.clone(), v.clone());
b.insert(k.clone(), v.clone());
}
AddEntry(ref k, ref v) => {
a.entry(k.clone()).or_insert_with(|| v.clone());
b.entry(k.clone()).or_insert_with(|| v.clone());
}
Remove(ref k) => {
a.swap_remove(k);
b.remove(k);
}
RemoveEntry(ref k) => {
if let OEntry::Occupied(ent) = a.entry(k.clone()) {
ent.swap_remove_entry();
}
if let HEntry::Occupied(ent) = b.entry(k.clone()) {
ent.remove_entry();
}
}
}
//println!("{:?}", a);
}
}
fn assert_maps_equivalent<K, V>(a: &IndexMap<K, V>, b: &HashMap<K, V>) -> bool
where
K: Hash + Eq + Debug,
V: Eq + Debug,
{
assert_eq!(a.len(), b.len());
assert_eq!(a.iter().next().is_some(), b.iter().next().is_some());
for key in a.keys() {
assert!(b.contains_key(key), "b does not contain {:?}", key);
}
for key in b.keys() {
assert!(a.get(key).is_some(), "a does not contain {:?}", key);
}
for key in a.keys() {
assert_eq!(a[key], b[key]);
}
true
}
quickcheck_limit! {
fn operations_i8(ops: Large<Vec<Op<i8, i8>>>) -> bool {
let mut map = IndexMap::new();
let mut reference = HashMap::new();
do_ops(&ops, &mut map, &mut reference);
assert_maps_equivalent(&map, &reference)
}
fn operations_string(ops: Vec<Op<Alpha, i8>>) -> bool {
let mut map = IndexMap::new();
let mut reference = HashMap::new();
do_ops(&ops, &mut map, &mut reference);
assert_maps_equivalent(&map, &reference)
}
fn keys_values(ops: Large<Vec<Op<i8, i8>>>) -> bool {
let mut map = IndexMap::new();
let mut reference = HashMap::new();
do_ops(&ops, &mut map, &mut reference);
let mut visit = IndexMap::new();
for (k, v) in map.keys().zip(map.values()) {
assert_eq!(&map[k], v);
assert!(!visit.contains_key(k));
visit.insert(*k, *v);
}
assert_eq!(visit.len(), reference.len());
true
}
fn keys_values_mut(ops: Large<Vec<Op<i8, i8>>>) -> bool {
let mut map = IndexMap::new();
let mut reference = HashMap::new();
do_ops(&ops, &mut map, &mut reference);
let mut visit = IndexMap::new();
let keys = Vec::from_iter(map.keys().copied());
for (k, v) in keys.iter().zip(map.values_mut()) {
assert_eq!(&reference[k], v);
assert!(!visit.contains_key(k));
visit.insert(*k, *v);
}
assert_eq!(visit.len(), reference.len());
true
}
fn equality(ops1: Vec<Op<i8, i8>>, removes: Vec<usize>) -> bool {
let mut map = IndexMap::new();
let mut reference = HashMap::new();
do_ops(&ops1, &mut map, &mut reference);
let mut ops2 = ops1.clone();
for &r in &removes {
if !ops2.is_empty() {
let i = r % ops2.len();
ops2.remove(i);
}
}
let mut map2 = IndexMapFnv::default();
let mut reference2 = HashMap::new();
do_ops(&ops2, &mut map2, &mut reference2);
assert_eq!(map == map2, reference == reference2);
true
}
fn retain_ordered(keys: Large<Vec<i8>>, remove: Large<Vec<i8>>) -> () {
let mut map = indexmap(keys.iter());
let initial_map = map.clone(); // deduplicated in-order input
let remove_map = indexmap(remove.iter());
let keys_s = set(keys.iter());
let remove_s = set(remove.iter());
let answer = &keys_s - &remove_s;
map.retain(|k, _| !remove_map.contains_key(k));
// check the values
assert_eq!(map.len(), answer.len());
for key in &answer {
assert!(map.contains_key(key));
}
// check the order
itertools::assert_equal(map.keys(), initial_map.keys().filter(|&k| !remove_map.contains_key(k)));
}
fn sort_1(keyvals: Large<Vec<(i8, i8)>>) -> () {
let mut map: IndexMap<_, _> = IndexMap::from_iter(keyvals.to_vec());
let mut answer = keyvals.0;
answer.sort_by_key(|t| t.0);
// reverse dedup: Because IndexMap::from_iter keeps the last value for
// identical keys
answer.reverse();
answer.dedup_by_key(|t| t.0);
answer.reverse();
map.sort_by(|k1, _, k2, _| Ord::cmp(k1, k2));
// check it contains all the values it should
for &(key, val) in &answer {
assert_eq!(map[&key], val);
}
// check the order
let mapv = Vec::from_iter(map);
assert_eq!(answer, mapv);
}
fn sort_2(keyvals: Large<Vec<(i8, i8)>>) -> () {
let mut map: IndexMap<_, _> = IndexMap::from_iter(keyvals.to_vec());
map.sort_by(|_, v1, _, v2| Ord::cmp(v1, v2));
assert_sorted_by_key(map, |t| t.1);
}
fn reverse(keyvals: Large<Vec<(i8, i8)>>) -> () {
let mut map: IndexMap<_, _> = IndexMap::from_iter(keyvals.to_vec());
fn generate_answer(input: &Vec<(i8, i8)>) -> Vec<(i8, i8)> {
// to mimic what `IndexMap::from_iter` does:
// need to get (A) the unique keys in forward order, and (B) the
// last value of each of those keys.
// create (A): an iterable that yields the unique keys in ltr order
let mut seen_keys = HashSet::new();
let unique_keys_forward = input.iter().filter_map(move |(k, _)| {
if seen_keys.contains(k) { None }
else { seen_keys.insert(*k); Some(*k) }
});
// create (B): a mapping of keys to the last value seen for that key
// this is the same as reversing the input and taking the first
// value seen for that key!
let mut last_val_per_key = HashMap::new();
for &(k, v) in input.iter().rev() {
if !last_val_per_key.contains_key(&k) {
last_val_per_key.insert(k, v);
}
}
// iterate over the keys in (A) in order, and match each one with
// the corresponding last value from (B)
let mut ans: Vec<_> = unique_keys_forward
.map(|k| (k, *last_val_per_key.get(&k).unwrap()))
.collect();
// finally, since this test is testing `.reverse()`, reverse the
// answer in-place
ans.reverse();
ans
}
let answer = generate_answer(&keyvals.0);
// perform the work
map.reverse();
// check it contains all the values it should
for &(key, val) in &answer {
assert_eq!(map[&key], val);
}
// check the order
let mapv = Vec::from_iter(map);
assert_eq!(answer, mapv);
}
}
fn assert_sorted_by_key<I, Key, X>(iterable: I, key: Key)
where
I: IntoIterator,
I::Item: Ord + Clone + Debug,
Key: Fn(&I::Item) -> X,
X: Ord,
{
let input = Vec::from_iter(iterable);
let mut sorted = input.clone();
sorted.sort_by_key(key);
assert_eq!(input, sorted);
}
#[derive(Clone, Debug, Hash, PartialEq, Eq)]
struct Alpha(String);
impl Deref for Alpha {
type Target = String;
fn deref(&self) -> &String {
&self.0
}
}
const ALPHABET: &[u8] = b"abcdefghijklmnopqrstuvwxyz";
impl Arbitrary for Alpha {
fn arbitrary(g: &mut Gen) -> Self {
let len = usize::arbitrary(g) % g.size();
let len = min(len, 16);
Alpha(
(0..len)
.map(|_| ALPHABET[usize::arbitrary(g) % ALPHABET.len()] as char)
.collect(),
)
}
fn shrink(&self) -> Box<dyn Iterator<Item = Self>> {
Box::new((**self).shrink().map(Alpha))
}
}
/// quickcheck Arbitrary adaptor -- make a larger vec
#[derive(Clone, Debug)]
struct Large<T>(T);
impl<T> Deref for Large<T> {
type Target = T;
fn deref(&self) -> &T {
&self.0
}
}
impl<T> Arbitrary for Large<Vec<T>>
where
T: Arbitrary,
{
fn arbitrary(g: &mut Gen) -> Self {
let len = usize::arbitrary(g) % (g.size() * 10);
Large((0..len).map(|_| T::arbitrary(g)).collect())
}
fn shrink(&self) -> Box<dyn Iterator<Item = Self>> {
Box::new((**self).shrink().map(Large))
}
}

28
clamav/libclamav_rust/.cargo/vendor/indexmap/tests/tests.rs vendored Normal file
View File

@@ -0,0 +1,28 @@
use indexmap::{indexmap, indexset};
#[test]
fn test_sort() {
let m = indexmap! {
1 => 2,
7 => 1,
2 => 2,
3 => 3,
};
itertools::assert_equal(
m.sorted_by(|_k1, v1, _k2, v2| v1.cmp(v2)),
vec![(7, 1), (1, 2), (2, 2), (3, 3)],
);
}
#[test]
fn test_sort_set() {
let s = indexset! {
1,
7,
2,
3,
};
itertools::assert_equal(s.sorted_by(|v1, v2| v1.cmp(v2)), vec![1, 2, 3, 7]);
}