openharmony/third_party_rust_rust-smallvec
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Early returns

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This commit is contained in:
Simon Sapin
2020-04-23 13:58:43 +02:00
parent 125580a76d
commit 62e90c9251
1 changed files with 13 additions and 15 deletions
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lib.rs
+13 -15
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@@ -796,15 +796,14 @@ impl<A: Array> SmallVec<A> {
// so that the optimizer removes duplicated calls to it
// from callers like insert()
let (_, &mut len, cap) = self.triple_mut();
if cap - len < additional {
let new_cap = len
.checked_add(additional)
.and_then(usize::checked_next_power_of_two)
.ok_or(CollectionAllocErr::CapacityOverflow)?;
self.try_grow(new_cap)
} else {
Ok(())
if cap - len >= additional {
return Ok(());
}
let new_cap = len
.checked_add(additional)
.and_then(usize::checked_next_power_of_two)
.ok_or(CollectionAllocErr::CapacityOverflow)?;
self.try_grow(new_cap)
}
/// Reserve the minimum capacity for `additional` more elements to be inserted.
@@ -817,14 +816,13 @@ impl<A: Array> SmallVec<A> {
/// Reserve the minimum capacity for `additional` more elements to be inserted.
pub fn try_reserve_exact(&mut self, additional: usize) -> Result<(), CollectionAllocErr> {
let (_, &mut len, cap) = self.triple_mut();
if cap - len < additional {
let new_cap = len
.checked_add(additional)
.ok_or(CollectionAllocErr::CapacityOverflow)?;
self.try_grow(new_cap)
} else {
Ok(())
if cap - len >= additional {
return Ok(());
}
let new_cap = len
.checked_add(additional)
.ok_or(CollectionAllocErr::CapacityOverflow)?;
self.try_grow(new_cap)
}
/// Shrink the capacity of the vector as much as possible.