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Rollup merge of #77471 - ssomers:btree_cleanup_3, r=Mark-Simulacrum

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BTreeMap: refactoring around edges, missed spots

Tweaks from #77244 (and more) that are really inconsistencies in #77005.

r? @Mark-Simulacrum
This commit is contained in:
Dylan DPC 2020-10-05 02:29:38 +02:00 committed by GitHub
commit 23b1e3d772
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1 changed files with 7 additions and 7 deletions
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14
library/alloc/src/collections/btree/node.rs
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@ -474,7 +474,7 @@ impl<'a, K, V, Type> NodeRef<marker::Mut<'a>, K, V, Type> {
///
/// # Safety
/// The node has more than `idx` initialized elements.
pub unsafe fn key_mut_at(&mut self, idx: usize) -> &mut K {
unsafe fn key_mut_at(&mut self, idx: usize) -> &mut K {
unsafe { self.reborrow_mut().into_key_mut_at(idx) }
}
@ -482,7 +482,7 @@ impl<'a, K, V, Type> NodeRef<marker::Mut<'a>, K, V, Type> {
///
/// # Safety
/// The node has more than `idx` initialized elements.
pub unsafe fn val_mut_at(&mut self, idx: usize) -> &mut V {
unsafe fn val_mut_at(&mut self, idx: usize) -> &mut V {
unsafe { self.reborrow_mut().into_val_mut_at(idx) }
}
@ -645,7 +645,7 @@ impl<'a, K: 'a, V: 'a> NodeRef<marker::Mut<'a>, K, V, marker::Internal> {
/// Adds a key/value pair, and an edge to go to the left of that pair,
/// to the beginning of the node.
pub fn push_front(&mut self, key: K, val: V, edge: Root<K, V>) {
fn push_front(&mut self, key: K, val: V, edge: Root<K, V>) {
assert!(edge.height == self.height - 1);
assert!(self.len() < CAPACITY);
@ -1001,18 +1001,18 @@ impl<'a, K: 'a, V: 'a> Handle<NodeRef<marker::Mut<'a>, K, V, marker::Internal>,
let (middle_kv_idx, insertion) = splitpoint(self.idx);
let middle = unsafe { Handle::new_kv(self.node, middle_kv_idx) };
let (mut left, k, v, mut right) = middle.split();
match insertion {
let mut insertion_edge = match insertion {
InsertionPlace::Left(insert_idx) => unsafe {
Handle::new_edge(left.reborrow_mut(), insert_idx).insert_fit(key, val, edge);
Handle::new_edge(left.reborrow_mut(), insert_idx)
},
InsertionPlace::Right(insert_idx) => unsafe {
Handle::new_edge(
right.node_as_mut().cast_unchecked::<marker::Internal>(),
insert_idx,
)
.insert_fit(key, val, edge);
},
}
};
insertion_edge.insert_fit(key, val, edge);
InsertResult::Split(SplitResult { left: left.forget_type(), k, v, right })
}
}