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revset: inline walk_children()

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There's only one caller, and we have common code at the call site.
This commit is contained in:
Yuya Nishihara 2023-05-28 21:21:21 +09:00
parent d28bd8fa0f
commit cd0b24ef14
1 changed files with 18 additions and 34 deletions
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52
lib/src/default_revset_engine.rs
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@ -569,12 +569,27 @@ impl<'index> EvaluationContext<'index> {
generation_from_roots,
} => {
let root_set = self.evaluate(roots)?;
let root_positions = root_set.iter().map(|entry| entry.position()).collect_vec();
let head_set = self.evaluate(heads)?;
if generation_from_roots == &(1..2) {
Ok(Box::new(self.walk_children(&*root_set, &*head_set)))
let walk = self
.walk_ancestors(&*head_set)
.take_until_roots(&root_positions);
let root_positions_set: HashSet<_> = root_positions.into_iter().collect();
let candidates = Box::new(RevWalkRevset { walk });
let predicate = PurePredicateFn(move |entry: &IndexEntry| {
entry
.parent_positions()
.iter()
.any(|parent_pos| root_positions_set.contains(parent_pos))
});
// TODO: Suppose heads include all visible heads, ToPredicateFn version can be
// optimized to only test the predicate()
Ok(Box::new(FilterRevset {
candidates,
predicate,
}))
} else if generation_from_roots == &GENERATION_RANGE_FULL {
let root_positions =
root_set.iter().map(|entry| entry.position()).collect_vec();
let mut index_entries = self
.walk_ancestors(&*head_set)
.descendants(&root_positions)
@ -585,8 +600,6 @@ impl<'index> EvaluationContext<'index> {
// For small generation range, it might be better to build a reachable map
// with generation bit set, which can be calculated incrementally from roots:
// reachable[pos] = (reachable[parent_pos] | ...) << 1
let root_positions =
root_set.iter().map(|entry| entry.position()).collect_vec();
let walk = self
.walk_ancestors(&*head_set)
.descendants_filtered_by_generation(
@ -698,35 +711,6 @@ impl<'index> EvaluationContext<'index> {
self.index.walk_revs(&head_positions, &[])
}
fn walk_children<'a, 'b, S, T>(
&self,
root_set: &S,
head_set: &T,
) -> impl InternalRevset<'index> + 'index
where
S: InternalRevset<'a> + ?Sized,
T: InternalRevset<'b> + ?Sized,
{
let root_positions = root_set.iter().map(|entry| entry.position()).collect_vec();
let walk = self
.walk_ancestors(head_set)
.take_until_roots(&root_positions);
let root_positions: HashSet<_> = root_positions.into_iter().collect();
let candidates = Box::new(RevWalkRevset { walk });
let predicate = PurePredicateFn(move |entry: &IndexEntry| {
entry
.parent_positions()
.iter()
.any(|parent_pos| root_positions.contains(parent_pos))
});
// TODO: Suppose heads include all visible heads, ToPredicateFn version can be
// optimized to only test the predicate()
FilterRevset {
candidates,
predicate,
}
}
fn revset_for_commit_ids(&self, commit_ids: &[CommitId]) -> EagerRevset<'index> {
let mut index_entries = vec![];
for id in commit_ids {