Adding upstream version 1.64.0+dfsg1.upstream/1.64.0+dfsg1

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 458 insertions, 0 deletions

diff --git a/vendor/dashmap/src/set.rs b/vendor/dashmap/src/set.rs
new file mode 100644
index 000000000..12445a994
--- /dev/null
+++ b/vendor/dashmap/src/set.rs
@@ -0,0 +1,458 @@
+use crate::iter_set::{Iter, OwningIter};
+#[cfg(feature = "raw-api")]
+use crate::lock::RwLock;
+use crate::setref::one::Ref;
+use crate::DashMap;
+#[cfg(feature = "raw-api")]
+use crate::HashMap;
+use cfg_if::cfg_if;
+use core::borrow::Borrow;
+use core::fmt;
+use core::hash::{BuildHasher, Hash};
+use core::iter::FromIterator;
+use std::collections::hash_map::RandomState;
+
+/// DashSet is a thin wrapper around [`DashMap`] using `()` as the value type. It uses
+/// methods and types which are more convenient to work with on a set.
+///
+/// [`DashMap`]: struct.DashMap.html
+pub struct DashSet<K, S = RandomState> {
+    pub(crate) inner: DashMap<K, (), S>,
+}
+
+impl<K: Eq + Hash + fmt::Debug, S: BuildHasher + Clone> fmt::Debug for DashSet<K, S> {
+    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
+        fmt::Debug::fmt(&self.inner, f)
+    }
+}
+
+impl<K: Eq + Hash + Clone, S: Clone> Clone for DashSet<K, S> {
+    fn clone(&self) -> Self {
+        Self {
+            inner: self.inner.clone(),
+        }
+    }
+
+    fn clone_from(&mut self, source: &Self) {
+        self.inner.clone_from(&source.inner)
+    }
+}
+
+impl<K, S> Default for DashSet<K, S>
+where
+    K: Eq + Hash,
+    S: Default + BuildHasher + Clone,
+{
+    fn default() -> Self {
+        Self::with_hasher(Default::default())
+    }
+}
+
+impl<'a, K: 'a + Eq + Hash> DashSet<K, RandomState> {
+    /// Creates a new DashSet with a capacity of 0.
+    ///
+    /// # Examples
+    ///
+    /// ```
+    /// use dashmap::DashSet;
+    ///
+    /// let games = DashSet::new();
+    /// games.insert("Veloren");
+    /// ```
+    pub fn new() -> Self {
+        Self::with_hasher(RandomState::default())
+    }
+
+    /// Creates a new DashMap with a specified starting capacity.
+    ///
+    /// # Examples
+    ///
+    /// ```
+    /// use dashmap::DashSet;
+    ///
+    /// let numbers = DashSet::with_capacity(2);
+    /// numbers.insert(2);
+    /// numbers.insert(8);
+    /// ```
+    pub fn with_capacity(capacity: usize) -> Self {
+        Self::with_capacity_and_hasher(capacity, RandomState::default())
+    }
+}
+
+impl<'a, K: 'a + Eq + Hash, S: BuildHasher + Clone> DashSet<K, S> {
+    /// Creates a new DashMap with a capacity of 0 and the provided hasher.
+    ///
+    /// # Examples
+    ///
+    /// ```
+    /// use dashmap::DashSet;
+    /// use std::collections::hash_map::RandomState;
+    ///
+    /// let s = RandomState::new();
+    /// let games = DashSet::with_hasher(s);
+    /// games.insert("Veloren");
+    /// ```
+    pub fn with_hasher(hasher: S) -> Self {
+        Self::with_capacity_and_hasher(0, hasher)
+    }
+
+    /// Creates a new DashMap with a specified starting capacity and hasher.
+    ///
+    /// # Examples
+    ///
+    /// ```
+    /// use dashmap::DashSet;
+    /// use std::collections::hash_map::RandomState;
+    ///
+    /// let s = RandomState::new();
+    /// let numbers = DashSet::with_capacity_and_hasher(2, s);
+    /// numbers.insert(2);
+    /// numbers.insert(8);
+    /// ```
+    pub fn with_capacity_and_hasher(capacity: usize, hasher: S) -> Self {
+        Self {
+            inner: DashMap::with_capacity_and_hasher(capacity, hasher),
+        }
+    }
+
+    /// Hash a given item to produce a usize.
+    /// Uses the provided or default HashBuilder.
+    pub fn hash_usize<T: Hash>(&self, item: &T) -> usize {
+        self.inner.hash_usize(item)
+    }
+
+    cfg_if! {
+        if #[cfg(feature = "raw-api")] {
+            /// Allows you to peek at the inner shards that store your data.
+            /// You should probably not use this unless you know what you are doing.
+            ///
+            /// Requires the `raw-api` feature to be enabled.
+            ///
+            /// # Examples
+            ///
+            /// ```
+            /// use dashmap::DashSet;
+            ///
+            /// let set = DashSet::<()>::new();
+            /// println!("Amount of shards: {}", set.shards().len());
+            /// ```
+            pub fn shards(&self) -> &[RwLock<HashMap<K, (), S>>] {
+                self.inner.shards()
+            }
+        }
+    }
+
+    cfg_if! {
+        if #[cfg(feature = "raw-api")] {
+            /// Finds which shard a certain key is stored in.
+            /// You should probably not use this unless you know what you are doing.
+            /// Note that shard selection is dependent on the default or provided HashBuilder.
+            ///
+            /// Requires the `raw-api` feature to be enabled.
+            ///
+            /// # Examples
+            ///
+            /// ```
+            /// use dashmap::DashSet;
+            ///
+            /// let set = DashSet::new();
+            /// set.insert("coca-cola");
+            /// println!("coca-cola is stored in shard: {}", set.determine_map("coca-cola"));
+            /// ```
+            pub fn determine_map<Q>(&self, key: &Q) -> usize
+            where
+                K: Borrow<Q>,
+                Q: Hash + Eq + ?Sized,
+            {
+                self.inner.determine_map(key)
+            }
+        }
+    }
+
+    cfg_if! {
+        if #[cfg(feature = "raw-api")] {
+            /// Finds which shard a certain hash is stored in.
+            ///
+            /// Requires the `raw-api` feature to be enabled.
+            ///
+            /// # Examples
+            ///
+            /// ```
+            /// use dashmap::DashSet;
+            ///
+            /// let set: DashSet<i32> = DashSet::new();
+            /// let key = "key";
+            /// let hash = set.hash_usize(&key);
+            /// println!("hash is stored in shard: {}", set.determine_shard(hash));
+            /// ```
+            pub fn determine_shard(&self, hash: usize) -> usize {
+                self.inner.determine_shard(hash)
+            }
+        }
+    }
+
+    /// Inserts a key into the set. Returns true if the key was not already in the set.
+    ///
+    /// # Examples
+    ///
+    /// ```
+    /// use dashmap::DashSet;
+    ///
+    /// let set = DashSet::new();
+    /// set.insert("I am the key!");
+    /// ```
+    pub fn insert(&self, key: K) -> bool {
+        self.inner.insert(key, ()).is_none()
+    }
+
+    /// Removes an entry from the map, returning the key if it existed in the map.
+    ///
+    /// # Examples
+    ///
+    /// ```
+    /// use dashmap::DashSet;
+    ///
+    /// let soccer_team = DashSet::new();
+    /// soccer_team.insert("Jack");
+    /// assert_eq!(soccer_team.remove("Jack").unwrap(), "Jack");
+    /// ```
+    pub fn remove<Q>(&self, key: &Q) -> Option<K>
+    where
+        K: Borrow<Q>,
+        Q: Hash + Eq + ?Sized,
+    {
+        self.inner.remove(key).map(|(k, _)| k)
+    }
+
+    /// Removes an entry from the set, returning the key
+    /// if the entry existed and the provided conditional function returned true.
+    ///
+    /// ```
+    /// use dashmap::DashSet;
+    ///
+    /// let soccer_team = DashSet::new();
+    /// soccer_team.insert("Sam");
+    /// soccer_team.remove_if("Sam", |player| player.starts_with("Ja"));
+    /// assert!(soccer_team.contains("Sam"));
+    /// ```
+    /// ```
+    /// use dashmap::DashSet;
+    ///
+    /// let soccer_team = DashSet::new();
+    /// soccer_team.insert("Sam");
+    /// soccer_team.remove_if("Jacob", |player| player.starts_with("Ja"));
+    /// assert!(!soccer_team.contains("Jacob"));
+    /// ```
+    pub fn remove_if<Q>(&self, key: &Q, f: impl FnOnce(&K) -> bool) -> Option<K>
+    where
+        K: Borrow<Q>,
+        Q: Hash + Eq + ?Sized,
+    {
+        // TODO: Don't create another closure around f
+        self.inner.remove_if(key, |k, _| f(k)).map(|(k, _)| k)
+    }
+
+    /// Creates an iterator over a DashMap yielding immutable references.
+    ///
+    /// # Examples
+    ///
+    /// ```
+    /// use dashmap::DashSet;
+    ///
+    /// let words = DashSet::new();
+    /// words.insert("hello");
+    /// assert_eq!(words.iter().count(), 1);
+    /// ```
+    pub fn iter(&'a self) -> Iter<'a, K, S, DashMap<K, (), S>> {
+        let iter = self.inner.iter();
+
+        Iter::new(iter)
+    }
+
+    /// Get a reference to an entry in the set
+    ///
+    /// # Examples
+    ///
+    /// ```
+    /// use dashmap::DashSet;
+    ///
+    /// let youtubers = DashSet::new();
+    /// youtubers.insert("Bosnian Bill");
+    /// assert_eq!(*youtubers.get("Bosnian Bill").unwrap(), "Bosnian Bill");
+    /// ```
+    pub fn get<Q>(&'a self, key: &Q) -> Option<Ref<'a, K, S>>
+    where
+        K: Borrow<Q>,
+        Q: Hash + Eq + ?Sized,
+    {
+        self.inner.get(key).map(Ref::new)
+    }
+
+    /// Remove excess capacity to reduce memory usage.
+    pub fn shrink_to_fit(&self) {
+        self.inner.shrink_to_fit()
+    }
+
+    /// Retain elements that whose predicates return true
+    /// and discard elements whose predicates return false.
+    ///
+    /// # Examples
+    ///
+    /// ```
+    /// use dashmap::DashSet;
+    ///
+    /// let people = DashSet::new();
+    /// people.insert("Albin");
+    /// people.insert("Jones");
+    /// people.insert("Charlie");
+    /// people.retain(|name| name.contains('i'));
+    /// assert_eq!(people.len(), 2);
+    /// ```
+    pub fn retain(&self, mut f: impl FnMut(&K) -> bool) {
+        self.inner.retain(|k, _| f(k))
+    }
+
+    /// Fetches the total number of keys stored in the set.
+    ///
+    /// # Examples
+    ///
+    /// ```
+    /// use dashmap::DashSet;
+    ///
+    /// let people = DashSet::new();
+    /// people.insert("Albin");
+    /// people.insert("Jones");
+    /// people.insert("Charlie");
+    /// assert_eq!(people.len(), 3);
+    /// ```
+    pub fn len(&self) -> usize {
+        self.inner.len()
+    }
+
+    /// Checks if the set is empty or not.
+    ///
+    /// # Examples
+    ///
+    /// ```
+    /// use dashmap::DashSet;
+    ///
+    /// let map = DashSet::<()>::new();
+    /// assert!(map.is_empty());
+    /// ```
+    pub fn is_empty(&self) -> bool {
+        self.inner.is_empty()
+    }
+
+    /// Removes all keys in the set.
+    ///
+    /// # Examples
+    ///
+    /// ```
+    /// use dashmap::DashSet;
+    ///
+    /// let people = DashSet::new();
+    /// people.insert("Albin");
+    /// assert!(!people.is_empty());
+    /// people.clear();
+    /// assert!(people.is_empty());
+    /// ```
+    pub fn clear(&self) {
+        self.inner.clear()
+    }
+
+    /// Returns how many keys the set can store without reallocating.
+    pub fn capacity(&self) -> usize {
+        self.inner.capacity()
+    }
+
+    /// Checks if the set contains a specific key.
+    ///
+    /// # Examples
+    ///
+    /// ```
+    /// use dashmap::DashSet;
+    ///
+    /// let people = DashSet::new();
+    /// people.insert("Dakota Cherries");
+    /// assert!(people.contains("Dakota Cherries"));
+    /// ```
+    pub fn contains<Q>(&self, key: &Q) -> bool
+    where
+        K: Borrow<Q>,
+        Q: Hash + Eq + ?Sized,
+    {
+        self.inner.contains_key(key)
+    }
+}
+
+impl<'a, K: Eq + Hash, S: BuildHasher + Clone> IntoIterator for DashSet<K, S> {
+    type Item = K;
+
+    type IntoIter = OwningIter<K, S>;
+
+    fn into_iter(self) -> Self::IntoIter {
+        OwningIter::new(self.inner.into_iter())
+    }
+}
+
+impl<K: Eq + Hash, S: BuildHasher + Clone> Extend<K> for DashSet<K, S> {
+    fn extend<T: IntoIterator<Item = K>>(&mut self, iter: T) {
+        let iter = iter.into_iter().map(|k| (k, ()));
+
+        self.inner.extend(iter)
+    }
+}
+
+impl<K: Eq + Hash, S: BuildHasher + Clone + Default> FromIterator<K> for DashSet<K, S> {
+    fn from_iter<I: IntoIterator<Item = K>>(iter: I) -> Self {
+        let mut set = DashSet::default();
+
+        set.extend(iter);
+
+        set
+    }
+}
+
+#[cfg(test)]
+mod tests {
+    use crate::DashSet;
+
+    #[test]
+    fn test_basic() {
+        let set = DashSet::new();
+
+        set.insert(0);
+
+        assert_eq!(set.get(&0).as_deref(), Some(&0));
+    }
+
+    #[test]
+    fn test_default() {
+        let set: DashSet<u32> = DashSet::default();
+
+        set.insert(0);
+
+        assert_eq!(set.get(&0).as_deref(), Some(&0));
+    }
+
+    #[test]
+    fn test_multiple_hashes() {
+        let set = DashSet::<u32>::default();
+
+        for i in 0..100 {
+            assert!(set.insert(i));
+        }
+
+        for i in 0..100 {
+            assert!(!set.insert(i));
+        }
+
+        for i in 0..100 {
+            assert_eq!(Some(i), set.remove(&i));
+        }
+
+        for i in 0..100 {
+            assert_eq!(None, set.remove(&i));
+        }
+    }
+}