SSR: Use Definition::find_usages to speed up matching.

When the search pattern contains a path, this substantially speeds up finding matches, especially if the path references a private item.

1 files changed, 2 insertions, 1 deletions

diff --git a/crates/ra_ssr/src/lib.rs b/crates/ra_ssr/src/lib.rs
index 286619f59..5a71d4f31 100644
--- a/crates/ra_ssr/src/lib.rs
+++ b/crates/ra_ssr/src/lib.rs
@@ -151,8 +151,9 @@ impl<'db> MatchFinder<'db> {
     /// Returns matches for all added rules.
     pub fn matches(&self) -> SsrMatches {
         let mut matches = Vec::new();
+        let mut usage_cache = search::UsageCache::default();
         for rule in &self.rules {
-            self.find_matches_for_rule(rule, &mut matches);
+            self.find_matches_for_rule(rule, &mut usage_cache, &mut matches);
         }
         nester::nest_and_remove_collisions(matches, &self.sema)
     }