internal: port rust-analyzer to new Salsa

Author: davidbarsky

Cargo.lock

@@ -72,7 +72,7 @@ proc-macro-srv = { path = "./crates/proc-macro-srv", version = "0.0.0" }
 proc-macro-srv-cli = { path = "./crates/proc-macro-srv-cli", version = "0.0.0" }
 profile = { path = "./crates/profile", version = "0.0.0" }
 project-model = { path = "./crates/project-model", version = "0.0.0" }
-ra-salsa = { path = "./crates/ra-salsa", package = "salsa", version = "0.0.0" }
+query-group = { package = "query-group-macro", path = "./crates/query-group-macro", version = "0.0.0" }
 span = { path = "./crates/span", version = "0.0.0" }
 stdx = { path = "./crates/stdx", version = "0.0.0" }
 syntax = { path = "./crates/syntax", version = "0.0.0" }
@@ -135,6 +135,7 @@ process-wrap = { version = "8.0.2", features = ["std"] }
 pulldown-cmark-to-cmark = "10.0.4"
 pulldown-cmark = { version = "0.9.0", default-features = false }
 rayon = "1.8.0"
+salsa = "0.19"
 rustc-hash = "2.0.0"
 semver = "1.0.14"
 serde = { version = "1.0.192" }

Cargo.toml

@@ -15,7 +15,9 @@ rust-version.workspace = true
 lz4_flex = { version = "0.11", default-features = false }
 
 la-arena.workspace = true
-ra-salsa.workspace = true
+dashmap.workspace = true
+salsa.workspace = true
+query-group.workspace = true
 rustc-hash.workspace = true
 triomphe.workspace = true
 semver.workspace = true

crates/base-db/Cargo.toml

@@ -3,15 +3,12 @@
 
 use std::fmt;
 
-use ra_salsa::Durability;
 use rustc_hash::FxHashMap;
+use salsa::Durability;
 use triomphe::Arc;
 use vfs::FileId;
 
-use crate::{
-    CrateGraph, CrateId, CrateWorkspaceData, SourceDatabaseFileInputExt, SourceRoot,
-    SourceRootDatabase, SourceRootId,
-};
+use crate::{CrateGraph, CrateId, CrateWorkspaceData, RootQueryDb, SourceRoot, SourceRootId};
 
 /// Encapsulate a bunch of raw `.set` calls on the database.
 #[derive(Default)]
@@ -59,7 +56,7 @@ impl FileChange {
         self.ws_data = Some(data);
     }
 
-    pub fn apply(self, db: &mut dyn SourceRootDatabase) {
+    pub fn apply(self, db: &mut dyn RootQueryDb) {
         let _p = tracing::info_span!("FileChange::apply").entered();
         if let Some(roots) = self.roots {
             for (idx, root) in roots.into_iter().enumerate() {
@@ -68,14 +65,16 @@ impl FileChange {
                 for file_id in root.iter() {
                     db.set_file_source_root_with_durability(file_id, root_id, durability);
                 }
+
                 db.set_source_root_with_durability(root_id, Arc::new(root), durability);
             }
         }
 
         for (file_id, text) in self.files_changed {
             let source_root_id = db.file_source_root(file_id);
-            let source_root = db.source_root(source_root_id);
-            let durability = durability(&source_root);
+            let source_root = db.source_root(source_root_id.source_root_id(db));
+
+            let durability = durability(&source_root.source_root(db));
             // XXX: can't actually remove the file, just reset the text
             let text = text.unwrap_or_default();
             db.set_file_text_with_durability(file_id, &text, durability)