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Remove some allocs

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This commit is contained in:
Lukas Wirth 2021-12-09 18:04:32 +01:00
parent 6df9bd42f4
commit 067d87e8a9
1 changed files with 5 additions and 2 deletions
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7
crates/hir_def/src/resolver.rs
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@ -8,7 +8,7 @@
};
use indexmap::IndexMap;
use rustc_hash::FxHashSet;
use smallvec::SmallVec;
use smallvec::{smallvec, SmallVec};
use crate::{
body::scope::{ExprScopes, ScopeId},
@ -567,6 +567,8 @@ pub fn resolver_for_scope(
let mut r = owner.resolver(db);
let scopes = db.expr_scopes(owner);
let scope_chain = scopes.scope_chain(scope_id).collect::<Vec<_>>();
r.scopes.reserve(scope_chain.len());
for scope in scope_chain.into_iter().rev() {
if let Some(block) = scopes.block(scope) {
if let Some(def_map) = db.block_def_map(block) {
@ -739,12 +741,13 @@ pub trait HasResolver: Copy {
impl HasResolver for ModuleId {
fn resolver(self, db: &dyn DefDatabase) -> Resolver {
let mut def_map = self.def_map(db);
let mut modules = vec![(def_map.clone(), self.local_id)];
let mut modules: SmallVec<[_; 2]> = smallvec![(def_map.clone(), self.local_id)];
while let Some(parent) = def_map.parent() {
def_map = parent.def_map(db);
modules.push((def_map.clone(), parent.local_id));
}
let mut resolver = Resolver::default();
resolver.scopes.reserve(modules.len());
for (def_map, module) in modules.into_iter().rev() {
resolver = resolver.push_module_scope(def_map, module);
}