Adding upstream version 86.0.1.upstream/86.0.1upstream

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

1 files changed, 199 insertions, 0 deletions

diff --git a/third_party/rust/phf/src/map.rs b/third_party/rust/phf/src/map.rs
new file mode 100644
index 0000000000..30fc26487e
--- /dev/null
+++ b/third_party/rust/phf/src/map.rs
@@ -0,0 +1,199 @@
+//! An immutable map constructed at compile time.
+use core::borrow::Borrow;
+use core::ops::Index;
+use core::slice;
+use core::fmt;
+use core::iter::IntoIterator;
+use phf_shared::{self, PhfHash, HashKey};
+use crate::Slice;
+
+/// An immutable map constructed at compile time.
+///
+/// ## Note
+///
+/// The fields of this struct are public so that they may be initialized by the
+/// `phf_map!` macro and code generation. They are subject to change at any
+/// time and should never be accessed directly.
+pub struct Map<K: 'static, V: 'static> {
+    #[doc(hidden)]
+    pub key: HashKey,
+    #[doc(hidden)]
+    pub disps: Slice<(u32, u32)>,
+    #[doc(hidden)]
+    pub entries: Slice<(K, V)>,
+}
+
+impl<K, V> fmt::Debug for Map<K, V> where K: fmt::Debug, V: fmt::Debug {
+    fn fmt(&self, fmt: &mut fmt::Formatter) -> fmt::Result {
+        fmt.debug_map().entries(self.entries()).finish()
+    }
+}
+
+impl<'a, K, V, T: ?Sized> Index<&'a T> for Map<K, V> where T: Eq + PhfHash, K: Borrow<T> {
+    type Output = V;
+
+    fn index(&self, k: &'a T) -> &V {
+        self.get(k).expect("invalid key")
+    }
+}
+
+impl<K, V> Map<K, V> {
+    /// Returns true if the `Map` is empty.
+    pub fn is_empty(&self) -> bool {
+        self.len() == 0
+    }
+
+    /// Returns the number of entries in the `Map`.
+    pub fn len(&self) -> usize {
+        self.entries.len()
+    }
+
+    /// Determines if `key` is in the `Map`.
+    pub fn contains_key<T: ?Sized>(&self, key: &T) -> bool
+        where T: Eq + PhfHash,
+              K: Borrow<T>
+    {
+        self.get(key).is_some()
+    }
+
+    /// Returns a reference to the value that `key` maps to.
+    pub fn get<T: ?Sized>(&self, key: &T) -> Option<&V>
+        where T: Eq + PhfHash,
+              K: Borrow<T>
+    {
+        self.get_entry(key).map(|e| e.1)
+    }
+
+    /// Returns a reference to the map's internal static instance of the given
+    /// key.
+    ///
+    /// This can be useful for interning schemes.
+    pub fn get_key<T: ?Sized>(&self, key: &T) -> Option<&K>
+        where T: Eq + PhfHash,
+              K: Borrow<T>
+    {
+        self.get_entry(key).map(|e| e.0)
+    }
+
+    /// Like `get`, but returns both the key and the value.
+    pub fn get_entry<T: ?Sized>(&self, key: &T) -> Option<(&K, &V)>
+        where T: Eq + PhfHash,
+              K: Borrow<T>
+    {
+        if self.disps.len() == 0 { return None; } //Prevent panic on empty map
+        let hashes = phf_shared::hash(key, &self.key);
+        let index = phf_shared::get_index(&hashes, &*self.disps, self.entries.len());
+        let entry = &self.entries[index as usize];
+        let b: &T = entry.0.borrow();
+        if b == key {
+            Some((&entry.0, &entry.1))
+        } else {
+            None
+        }
+    }
+
+    /// Returns an iterator over the key/value pairs in the map.
+    ///
+    /// Entries are returned in an arbitrary but fixed order.
+    pub fn entries<'a>(&'a self) -> Entries<'a, K, V> {
+        Entries { iter: self.entries.iter() }
+    }
+
+    /// Returns an iterator over the keys in the map.
+    ///
+    /// Keys are returned in an arbitrary but fixed order.
+    pub fn keys<'a>(&'a self) -> Keys<'a, K, V> {
+        Keys { iter: self.entries() }
+    }
+
+    /// Returns an iterator over the values in the map.
+    ///
+    /// Values are returned in an arbitrary but fixed order.
+    pub fn values<'a>(&'a self) -> Values<'a, K, V> {
+        Values { iter: self.entries() }
+    }
+}
+
+impl<'a, K, V> IntoIterator for &'a Map<K, V> {
+    type Item = (&'a K, &'a V);
+    type IntoIter = Entries<'a, K, V>;
+
+    fn into_iter(self) -> Entries<'a, K, V> {
+        self.entries()
+    }
+}
+
+/// An iterator over the key/value pairs in a `Map`.
+pub struct Entries<'a, K: 'a, V: 'a> {
+    iter: slice::Iter<'a, (K, V)>,
+}
+
+impl<'a, K, V> Iterator for Entries<'a, K, V> {
+    type Item = (&'a K, &'a V);
+
+    fn next(&mut self) -> Option<(&'a K, &'a V)> {
+        self.iter.next().map(|&(ref k, ref v)| (k, v))
+    }
+
+    fn size_hint(&self) -> (usize, Option<usize>) {
+        self.iter.size_hint()
+    }
+}
+
+impl<'a, K, V> DoubleEndedIterator for Entries<'a, K, V> {
+    fn next_back(&mut self) -> Option<(&'a K, &'a V)> {
+        self.iter.next_back().map(|e| (&e.0, &e.1))
+    }
+}
+
+impl<'a, K, V> ExactSizeIterator for Entries<'a, K, V> {}
+
+/// An iterator over the keys in a `Map`.
+pub struct Keys<'a, K: 'a, V: 'a> {
+    iter: Entries<'a, K, V>,
+}
+
+impl<'a, K, V> Iterator for Keys<'a, K, V> {
+    type Item = &'a K;
+
+    fn next(&mut self) -> Option<&'a K> {
+        self.iter.next().map(|e| e.0)
+    }
+
+    fn size_hint(&self) -> (usize, Option<usize>) {
+        self.iter.size_hint()
+    }
+}
+
+impl<'a, K, V> DoubleEndedIterator for Keys<'a, K, V> {
+    fn next_back(&mut self) -> Option<&'a K> {
+        self.iter.next_back().map(|e| e.0)
+    }
+}
+
+impl<'a, K, V> ExactSizeIterator for Keys<'a, K, V> {}
+
+/// An iterator over the values in a `Map`.
+pub struct Values<'a, K: 'a, V: 'a> {
+    iter: Entries<'a, K, V>,
+}
+
+impl<'a, K, V> Iterator for Values<'a, K, V> {
+    type Item = &'a V;
+
+    fn next(&mut self) -> Option<&'a V> {
+        self.iter.next().map(|e| e.1)
+    }
+
+    fn size_hint(&self) -> (usize, Option<usize>) {
+        self.iter.size_hint()
+    }
+}
+
+impl<'a, K, V> DoubleEndedIterator for Values<'a, K, V> {
+    fn next_back(&mut self) -> Option<&'a V> {
+        self.iter.next_back().map(|e| e.1)
+    }
+}
+
+impl<'a, K, V> ExactSizeIterator for Values<'a, K, V> {}