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Remove crate graph deduplication logic

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This commit is contained in:
Lukas Wirth 2024-09-09 13:37:19 +02:00
parent dd026ce6a4
commit 8905f86d8a
9 changed files with 5 additions and 19657 deletions
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20
crates/base-db/src/input.rs
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@ -491,22 +491,15 @@ impl CrateGraph {
.for_each(|(_, data)| data.dependencies.sort_by_key(|dep| dep.crate_id));
}
/// Extends this crate graph by adding a complete disjoint second crate
/// Extends this crate graph by adding a complete second crate
/// graph and adjust the ids in the [`ProcMacroPaths`] accordingly.
///
/// This will deduplicate the crates of the graph where possible.
/// Note that for deduplication to fully work, `self`'s crate dependencies must be sorted by crate id.
/// If the crate dependencies were sorted, the resulting graph from this `extend` call will also
/// have the crate dependencies sorted.
///
/// Returns a mapping from `other`'s crate ids to the new crate ids in `self`.
/// Returns a map mapping `other`'s IDs to the new IDs in `self`.
pub fn extend(
&mut self,
mut other: CrateGraph,
proc_macros: &mut ProcMacroPaths,
merge: impl Fn((CrateId, &mut CrateData), (CrateId, &CrateData)) -> bool,
) -> FxHashMap<CrateId, CrateId> {
let m = self.len();
let topo = other.crates_in_topological_order();
let mut id_map: FxHashMap<CrateId, CrateId> = FxHashMap::default();
for topo in topo {
@ -514,20 +507,13 @@ impl CrateGraph {
crate_data.dependencies.iter_mut().for_each(|dep| dep.crate_id = id_map[&dep.crate_id]);
crate_data.dependencies.sort_by_key(|dep| dep.crate_id);
let res = self
.arena
.iter_mut()
.take(m)
.find_map(|(id, data)| merge((id, data), (topo, crate_data)).then_some(id));
let new_id =
if let Some(res) = res { res } else { self.arena.alloc(crate_data.clone()) };
let new_id = self.arena.alloc(crate_data.clone());
id_map.insert(topo, new_id);
}
*proc_macros =
mem::take(proc_macros).into_iter().map(|(id, macros)| (id_map[&id], macros)).collect();
id_map
}