use salsa's LRU for syntax trees

4 files changed, 7 insertions, 4 deletions

diff --git a/crates/ra_batch/src/lib.rs b/crates/ra_batch/src/lib.rs
index a445dcb4d..02ea89306 100644
--- a/crates/ra_batch/src/lib.rs
+++ b/crates/ra_batch/src/lib.rs
@@ -7,7 +7,7 @@ use std::collections::HashSet;
 use rustc_hash::FxHashMap;
 
 use ra_db::{
-    CrateGraph, FileId, SourceRoot, SourceRootId, SourceDatabase, salsa,
+    CrateGraph, FileId, SourceRoot, SourceRootId, SourceDatabase, salsa::{self, Database},
 };
 use ra_hir::db;
 use ra_project_model::ProjectWorkspace;
@@ -43,6 +43,8 @@ fn vfs_root_to_id(r: ra_vfs::VfsRoot) -> SourceRootId {
 impl BatchDatabase {
     pub fn load(crate_graph: CrateGraph, vfs: &mut Vfs) -> BatchDatabase {
         let mut db = BatchDatabase { runtime: salsa::Runtime::default() };
+        db.query_mut(ra_db::ParseQuery).set_lru_capacity(128);
+        db.query_mut(ra_hir::db::ParseMacroQuery).set_lru_capacity(128);
         db.set_crate_graph(Arc::new(crate_graph));
 
         // wait until Vfs has loaded all roots
diff --git a/crates/ra_db/Cargo.toml b/crates/ra_db/Cargo.toml
index 827855b2f..f73dd739a 100644
--- a/crates/ra_db/Cargo.toml
+++ b/crates/ra_db/Cargo.toml
@@ -5,7 +5,7 @@ version = "0.1.0"
 authors = ["rust-analyzer developers"]
 
 [dependencies]
-salsa = "0.12.1"
+salsa = "0.12.3"
 relative-path = "0.4.0"
 rustc-hash = "1.0"
 
diff --git a/crates/ra_ide_api/src/change.rs b/crates/ra_ide_api/src/change.rs
index 247dc0fee..ce03a0f95 100644
--- a/crates/ra_ide_api/src/change.rs
+++ b/crates/ra_ide_api/src/change.rs
@@ -225,7 +225,6 @@ impl RootDatabase {
         let sweep = SweepStrategy::default().discard_values().sweep_all_revisions();
 
         self.query(ra_db::ParseQuery).sweep(sweep);
-
         self.query(hir::db::ParseMacroQuery).sweep(sweep);
         self.query(hir::db::MacroDefQuery).sweep(sweep);
         self.query(hir::db::MacroArgQuery).sweep(sweep);
diff --git a/crates/ra_ide_api/src/db.rs b/crates/ra_ide_api/src/db.rs
index d1a452ecb..4f19b01c4 100644
--- a/crates/ra_ide_api/src/db.rs
+++ b/crates/ra_ide_api/src/db.rs
@@ -5,7 +5,7 @@ use std::{
 
 use ra_db::{
     CheckCanceled, FileId, Canceled, SourceDatabase,
-    salsa,
+    salsa::{self, Database},
 };
 
 use crate::{LineIndex, symbol_index::{self, SymbolsDatabase}};
@@ -49,6 +49,8 @@ impl Default for RootDatabase {
         db.set_crate_graph(Default::default());
         db.set_local_roots(Default::default());
         db.set_library_roots(Default::default());
+        db.query_mut(ra_db::ParseQuery).set_lru_capacity(128);
+        db.query_mut(hir::db::ParseMacroQuery).set_lru_capacity(128);
         db
     }
 }