Switch to fully dynamically dispatched salsa

This improves compile times quite a bit

3 files changed, 30 insertions, 33 deletions

diff --git a/crates/ra_ide_db/src/change.rs b/crates/ra_ide_db/src/change.rs
index 2504d7a33..d8da3f949 100644
--- a/crates/ra_ide_db/src/change.rs
+++ b/crates/ra_ide_db/src/change.rs
@@ -147,21 +147,21 @@ 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);
+        ra_db::ParseQuery.in_db(self).sweep(sweep);
+        hir::db::ParseMacroQuery.in_db(self).sweep(sweep);
 
         // Macros do take significant space, but less then the syntax trees
         // self.query(hir::db::MacroDefQuery).sweep(sweep);
         // self.query(hir::db::MacroArgQuery).sweep(sweep);
         // self.query(hir::db::MacroExpandQuery).sweep(sweep);
 
-        self.query(hir::db::AstIdMapQuery).sweep(sweep);
+        hir::db::AstIdMapQuery.in_db(self).sweep(sweep);
 
-        self.query(hir::db::BodyWithSourceMapQuery).sweep(sweep);
+        hir::db::BodyWithSourceMapQuery.in_db(self).sweep(sweep);
 
-        self.query(hir::db::ExprScopesQuery).sweep(sweep);
-        self.query(hir::db::InferQueryQuery).sweep(sweep);
-        self.query(hir::db::BodyQuery).sweep(sweep);
+        hir::db::ExprScopesQuery.in_db(self).sweep(sweep);
+        hir::db::InferQueryQuery.in_db(self).sweep(sweep);
+        hir::db::BodyQuery.in_db(self).sweep(sweep);
     }
 
     pub fn per_query_memory_usage(&mut self) -> Vec<(String, Bytes)> {
@@ -170,14 +170,14 @@ impl RootDatabase {
         macro_rules! sweep_each_query {
             ($($q:path)*) => {$(
                 let before = memory_usage().allocated;
-                self.query($q).sweep(sweep);
+                $q.in_db(self).sweep(sweep);
                 let after = memory_usage().allocated;
                 let q: $q = Default::default();
                 let name = format!("{:?}", q);
                 acc.push((name, before - after));
 
                 let before = memory_usage().allocated;
-                self.query($q).sweep(sweep.discard_everything());
+                $q.in_db(self).sweep(sweep.discard_everything());
                 let after = memory_usage().allocated;
                 let q: $q = Default::default();
                 let name = format!("{:?} (deps)", q);
@@ -252,7 +252,7 @@ impl RootDatabase {
         // write.
         // We do this after collecting the non-interned queries to correctly attribute memory used
         // by interned data.
-        self.runtime.synthetic_write(Durability::HIGH);
+        self.salsa_runtime_mut().synthetic_write(Durability::HIGH);
 
         sweep_each_query![
             // AstDatabase
diff --git a/crates/ra_ide_db/src/lib.rs b/crates/ra_ide_db/src/lib.rs
index c78071ad6..6900cac73 100644
--- a/crates/ra_ide_db/src/lib.rs
+++ b/crates/ra_ide_db/src/lib.rs
@@ -11,11 +11,11 @@ pub mod imports_locator;
 pub mod source_change;
 mod wasm_shims;
 
-use std::sync::Arc;
+use std::{fmt, sync::Arc};
 
 use hir::db::{AstDatabase, DefDatabase, HirDatabase};
 use ra_db::{
-    salsa::{self, Database, Durability},
+    salsa::{self, Durability},
     Canceled, CheckCanceled, CrateId, FileId, FileLoader, FileLoaderDelegate, SourceDatabase,
     Upcast,
 };
@@ -33,13 +33,18 @@ use crate::{line_index::LineIndex, symbol_index::SymbolsDatabase};
     hir::db::DefDatabaseStorage,
     hir::db::HirDatabaseStorage
 )]
-#[derive(Debug)]
 pub struct RootDatabase {
-    runtime: salsa::Runtime<RootDatabase>,
+    storage: salsa::Storage<RootDatabase>,
     pub last_gc: crate::wasm_shims::Instant,
     pub last_gc_check: crate::wasm_shims::Instant,
 }
 
+impl fmt::Debug for RootDatabase {
+    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
+        f.debug_struct("RootDatabase").finish()
+    }
+}
+
 impl Upcast<dyn AstDatabase> for RootDatabase {
     fn upcast(&self) -> &(dyn AstDatabase + 'static) {
         &*self
@@ -71,17 +76,11 @@ impl FileLoader for RootDatabase {
 }
 
 impl salsa::Database for RootDatabase {
-    fn salsa_runtime(&self) -> &salsa::Runtime<RootDatabase> {
-        &self.runtime
-    }
-    fn salsa_runtime_mut(&mut self) -> &mut salsa::Runtime<Self> {
-        &mut self.runtime
-    }
     fn on_propagated_panic(&self) -> ! {
         Canceled::throw()
     }
-    fn salsa_event(&self, event: impl Fn() -> salsa::Event<RootDatabase>) {
-        match event().kind {
+    fn salsa_event(&self, event: salsa::Event) {
+        match event.kind {
             salsa::EventKind::DidValidateMemoizedValue { .. }
             | salsa::EventKind::WillExecute { .. } => {
                 self.check_canceled();
@@ -100,7 +99,7 @@ impl Default for RootDatabase {
 impl RootDatabase {
     pub fn new(lru_capacity: Option<usize>) -> RootDatabase {
         let mut db = RootDatabase {
-            runtime: salsa::Runtime::default(),
+            storage: salsa::Storage::default(),
             last_gc: crate::wasm_shims::Instant::now(),
             last_gc_check: crate::wasm_shims::Instant::now(),
         };
@@ -113,16 +112,16 @@ impl RootDatabase {
 
     pub fn update_lru_capacity(&mut self, lru_capacity: Option<usize>) {
         let lru_capacity = lru_capacity.unwrap_or(ra_db::DEFAULT_LRU_CAP);
-        self.query_mut(ra_db::ParseQuery).set_lru_capacity(lru_capacity);
-        self.query_mut(hir::db::ParseMacroQuery).set_lru_capacity(lru_capacity);
-        self.query_mut(hir::db::MacroExpandQuery).set_lru_capacity(lru_capacity);
+        ra_db::ParseQuery.in_db_mut(self).set_lru_capacity(lru_capacity);
+        hir::db::ParseMacroQuery.in_db_mut(self).set_lru_capacity(lru_capacity);
+        hir::db::MacroExpandQuery.in_db_mut(self).set_lru_capacity(lru_capacity);
     }
 }
 
 impl salsa::ParallelDatabase for RootDatabase {
     fn snapshot(&self) -> salsa::Snapshot<RootDatabase> {
         salsa::Snapshot::new(RootDatabase {
-            runtime: self.runtime.snapshot(self),
+            storage: self.storage.snapshot(),
             last_gc: self.last_gc,
             last_gc_check: self.last_gc_check,
         })
@@ -134,7 +133,7 @@ pub trait LineIndexDatabase: ra_db::SourceDatabase + CheckCanceled {
     fn line_index(&self, file_id: FileId) -> Arc<LineIndex>;
 }
 
-fn line_index(db: &impl LineIndexDatabase, file_id: FileId) -> Arc<LineIndex> {
+fn line_index(db: &dyn LineIndexDatabase, file_id: FileId) -> Arc<LineIndex> {
     let text = db.file_text(file_id);
     Arc::new(LineIndex::new(&*text))
 }
diff --git a/crates/ra_ide_db/src/symbol_index.rs b/crates/ra_ide_db/src/symbol_index.rs
index 5a09e7d1d..131e2a128 100644
--- a/crates/ra_ide_db/src/symbol_index.rs
+++ b/crates/ra_ide_db/src/symbol_index.rs
@@ -87,7 +87,7 @@ impl Query {
 }
 
 #[salsa::query_group(SymbolsDatabaseStorage)]
-pub trait SymbolsDatabase: hir::db::HirDatabase + SourceDatabaseExt + ParallelDatabase {
+pub trait SymbolsDatabase: hir::db::HirDatabase + SourceDatabaseExt {
     fn file_symbols(&self, file_id: FileId) -> Arc<SymbolIndex>;
     fn library_symbols(&self) -> Arc<FxHashMap<SourceRootId, SymbolIndex>>;
     /// The set of "local" (that is, from the current workspace) roots.
@@ -100,9 +100,7 @@ pub trait SymbolsDatabase: hir::db::HirDatabase + SourceDatabaseExt + ParallelDa
     fn library_roots(&self) -> Arc<FxHashSet<SourceRootId>>;
 }
 
-fn library_symbols(
-    db: &(impl SymbolsDatabase + ParallelDatabase),
-) -> Arc<FxHashMap<SourceRootId, SymbolIndex>> {
+fn library_symbols(db: &dyn SymbolsDatabase) -> Arc<FxHashMap<SourceRootId, SymbolIndex>> {
     let _p = profile("library_symbols");
 
     let roots = db.library_roots();
@@ -123,7 +121,7 @@ fn library_symbols(
     Arc::new(res)
 }
 
-fn file_symbols(db: &impl SymbolsDatabase, file_id: FileId) -> Arc<SymbolIndex> {
+fn file_symbols(db: &dyn SymbolsDatabase, file_id: FileId) -> Arc<SymbolIndex> {
     db.check_canceled();
     let parse = db.parse(file_id);