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Change key to return &K rather than &Q #425

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merged 2 commits into from
Apr 21, 2023
Merged

Change key to return &K rather than &Q #425

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ecda296
change OccupiedEntryRef::key to return the key type rather than the b…
programmerjake Apr 21, 2023
e72ced8
change `OccupiedEntryRef::replace_entry_with` to give out key referen…
programmerjake Apr 21, 2023
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19 changes: 7 additions & 12 deletions src/map.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -4562,7 +4562,7 @@ impl<K: Borrow<Q>, Q: ?Sized + Debug, V: Debug, S, A: Allocator + Clone> Debug
{
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
f.debug_struct("OccupiedEntryRef")
.field("key", &self.key())
.field("key", &self.key().borrow())
.field("value", &self.get())
.finish()
}
Expand Down Expand Up @@ -5832,7 +5832,7 @@ impl<'a, 'b, K, Q: ?Sized, V, S, A: Allocator + Clone> EntryRef<'a, 'b, K, Q, V,
K: Borrow<Q>,
{
match *self {
EntryRef::Occupied(ref entry) => entry.key(),
EntryRef::Occupied(ref entry) => entry.key().borrow(),
EntryRef::Vacant(ref entry) => entry.key(),
}
}
Expand Down Expand Up @@ -5928,8 +5928,7 @@ impl<'a, 'b, K, Q: ?Sized, V, S, A: Allocator + Clone> EntryRef<'a, 'b, K, Q, V,
#[cfg_attr(feature = "inline-more", inline)]
pub fn and_replace_entry_with<F>(self, f: F) -> Self
where
F: FnOnce(&Q, V) -> Option<V>,
K: Borrow<Q>,
F: FnOnce(&K, V) -> Option<V>,
{
match self {
EntryRef::Occupied(entry) => entry.replace_entry_with(f),
Expand Down Expand Up @@ -5988,11 +5987,8 @@ impl<'a, 'b, K, Q: ?Sized, V, S, A: Allocator + Clone> OccupiedEntryRef<'a, 'b,
/// }
/// ```
#[cfg_attr(feature = "inline-more", inline)]
pub fn key(&self) -> &Q
where
K: Borrow<Q>,
{
unsafe { &self.elem.as_ref().0 }.borrow()
pub fn key(&self) -> &K {
unsafe { &self.elem.as_ref().0 }
}

/// Take the ownership of the key and value from the map.
Expand Down Expand Up @@ -6297,16 +6293,15 @@ impl<'a, 'b, K, Q: ?Sized, V, S, A: Allocator + Clone> OccupiedEntryRef<'a, 'b,
#[cfg_attr(feature = "inline-more", inline)]
pub fn replace_entry_with<F>(self, f: F) -> EntryRef<'a, 'b, K, Q, V, S, A>
where
F: FnOnce(&Q, V) -> Option<V>,
K: Borrow<Q>,
F: FnOnce(&K, V) -> Option<V>,
{
unsafe {
let mut spare_key = None;

self.table
.table
.replace_bucket_with(self.elem.clone(), |(key, value)| {
if let Some(new_value) = f(key.borrow(), value) {
if let Some(new_value) = f(&key, value) {
Some((key, new_value))
} else {
spare_key = Some(KeyOrRef::Owned(key));
Expand Down