salsa 3.0

Cargo.toml

@@ -5,6 +5,9 @@ resolver = "2"
 [profile.dev.package.solc]
 opt-level = 3
 
+[workspace.dependencies]
+salsa = { git = "https://github.com/salsa-rs/salsa", rev = "e4d65a656fc68d0fb759b292ceae2aff2c785c5d" }
+
 [profile.dev]
 # Set to 0 to make the build faster and debugging more difficult.
 debug = 1

crates/common2/Cargo.toml

@@ -13,6 +13,7 @@ description = "Provides HIR definition and lowering for Fe lang."
 semver = "1.0.17"
 camino = "1.1.4"
 smol_str = "0.1.24"
-salsa = { git = "https://github.com/salsa-rs/salsa", rev = "a1bf3a6" }
+salsa.workspace = true
 indexmap = "2.2"
 parser = { path = "../parser2", package = "fe-parser2" }
+paste = "1.0.15"

crates/common2/src/indexmap.rs

@@ -3,7 +3,7 @@ use std::{
     ops::{Deref, DerefMut},
 };
 
-use salsa::update::Update;
+use salsa::Update;
 
 #[derive(Debug, Clone)]
 pub struct IndexMap<K, V, S = RandomState>(indexmap::IndexMap<K, V, S>);

crates/common2/src/input.rs

@@ -1,4 +1,5 @@
 use camino::Utf8PathBuf;
+use salsa::Setter;
 use smol_str::SmolStr;
 
 use crate::{indexmap::IndexSet, InputDb};
@@ -74,9 +75,6 @@ impl InputIngot {
 
 #[salsa::input]
 pub struct InputFile {
-    /// A ingot id which the file belongs to.
-    pub ingot: InputIngot,
-
     /// A path to the file from the ingot root directory.
     #[return_ref]
     pub path: Utf8PathBuf,
@@ -86,8 +84,8 @@ pub struct InputFile {
 }
 
 impl InputFile {
-    pub fn abs_path(&self, db: &dyn InputDb) -> Utf8PathBuf {
-        self.ingot(db).path(db).join(self.path(db))
+    pub fn abs_path(&self, db: &dyn InputDb, ingot: InputIngot) -> Utf8PathBuf {
+        ingot.path(db).join(self.path(db))
     }
 }
 

crates/common2/src/lib.rs

@@ -1,15 +1,33 @@
 pub mod diagnostics;
 pub mod indexmap;
 pub mod input;
-
 pub use input::{InputFile, InputIngot};
 
-#[salsa::jar(db = InputDb)]
-pub struct Jar(InputIngot, InputFile);
+#[salsa::db]
+pub trait InputDb: salsa::Database {
+    fn as_input_db(&self) -> &dyn InputDb;
+}
+
+#[doc(hidden)]
+pub use paste::paste;
+
+#[macro_export]
+macro_rules! impl_db_traits {
+    ($db_type:ty, $($trait_name:ident),+ $(,)?) => {
+        #[salsa::db]
+        impl salsa::Database for $db_type {
+            fn salsa_event(&self, _event: &dyn Fn() -> salsa::Event) {}
+        }
 
-pub trait InputDb: salsa::DbWithJar<Jar> {
-    fn as_input_db(&self) -> &dyn InputDb {
-        <Self as salsa::DbWithJar<Jar>>::as_jar_db::<'_>(self)
-    }
+        $(
+            $crate::paste! {
+                #[salsa::db]
+                impl $trait_name for $db_type {
+                    fn [<as_ $trait_name:snake>](&self) -> &dyn $trait_name {
+                        self
+                    }
+                }
+            }
+        )+
+    };
 }
-impl<DB> InputDb for DB where DB: ?Sized + salsa::DbWithJar<Jar> {}

crates/driver2/Cargo.toml

@@ -10,7 +10,7 @@ description = "Provides Fe driver"
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
 
 [dependencies]
-salsa = { git = "https://github.com/salsa-rs/salsa", rev = "a1bf3a6" }
+salsa.workspace = true
 codespan-reporting = "0.11"
 
 hir = { path = "../hir", package = "fe-hir" }

crates/driver2/src/lib.rs

@@ -8,6 +8,7 @@ use codespan_reporting::term::{
 };
 use common::{
     diagnostics::CompleteDiagnostic,
+    impl_db_traits,
     indexmap::IndexSet,
     input::{IngotKind, Version},
     InputDb, InputFile, InputIngot,
@@ -28,31 +29,27 @@ use hir_analysis::{
 
 use crate::diagnostics::ToCsDiag;
 
-#[salsa::jar(db = DriverDb)]
-pub struct Jar(diagnostics::file_line_starts);
-
+#[salsa::db]
 pub trait DriverDb:
-    salsa::DbWithJar<Jar> + HirAnalysisDb + HirDb + LowerHirDb + SpannedHirDb + InputDb
-{
-}
-
-impl<DB> DriverDb for DB where
-    DB: salsa::DbWithJar<Jar> + HirAnalysisDb + HirDb + LowerHirDb + SpannedHirDb + InputDb
+    salsa::Database + HirAnalysisDb + HirDb + LowerHirDb + SpannedHirDb + InputDb
 {
+    fn as_driver_db(&self) -> &dyn DriverDb;
 }
 
-#[derive(Default)]
-#[salsa::db(
-    common::Jar,
-    hir::Jar,
-    hir::LowerJar,
-    hir::SpannedJar,
-    hir_analysis::Jar,
-    Jar
-)]
+#[derive(Default, Clone)]
+#[salsa::db]
 pub struct DriverDataBase {
     storage: salsa::Storage<Self>,
 }
+impl_db_traits!(
+    DriverDataBase,
+    InputDb,
+    HirDb,
+    LowerHirDb,
+    SpannedHirDb,
+    HirAnalysisDb,
+    DriverDb
+);
 
 impl DriverDataBase {
     // TODO: An temporary implementation for ui testing.
@@ -72,7 +69,7 @@ impl DriverDataBase {
         DiagnosticsCollection(pass_manager.run_on_module(top_mod))
     }
 
-    pub fn standalone(&mut self, file_path: &path::Path, source: &str) -> InputFile {
+    pub fn standalone(&mut self, file_path: &path::Path, source: &str) -> (InputIngot, InputFile) {
         let kind = IngotKind::StandAlone;
 
         // We set the ingot version to 0.0.0 for stand-alone file.
@@ -87,21 +84,17 @@ impl DriverDataBase {
         );
 
         let file_name = root_file.file_name().unwrap().to_str().unwrap();
-        let input_file = InputFile::new(self, ingot, file_name.into(), source.to_string());
+        let input_file = InputFile::new(self, file_name.into(), source.to_string());
         ingot.set_root_file(self, input_file);
         ingot.set_files(self, [input_file].into_iter().collect());
-        input_file
+        (ingot, input_file)
     }
 
-    pub fn top_mod(&self, input: InputFile) -> TopLevelMod {
-        map_file_to_mod(self, input)
+    pub fn top_mod(&self, ingot: InputIngot, input: InputFile) -> TopLevelMod {
+        map_file_to_mod(self, ingot, input)
     }
 }
 
-impl salsa::Database for DriverDataBase {
-    fn salsa_event(&self, _: salsa::Event) {}
-}
-
 pub struct DiagnosticsCollection<'db>(Vec<Box<dyn DiagnosticVoucher<'db> + 'db>>);
 impl<'db> DiagnosticsCollection<'db> {
     pub fn emit(&self, db: &'db DriverDataBase) {

crates/driver2/src/main.rs

@@ -24,8 +24,8 @@ pub fn main() {
     let source = std::fs::read_to_string(&args.file_path).unwrap();
 
     let mut db = DriverDataBase::default();
-    let input_file = db.standalone(path, &source);
-    let top_mod = db.top_mod(input_file);
+    let (ingot, file) = db.standalone(path, &source);
+    let top_mod = db.top_mod(ingot, file);
     let diags = db.run_on_top_mod(top_mod);
     diags.emit(&db);
 

crates/hir-analysis/Cargo.toml

@@ -8,7 +8,7 @@ repository = "https://github.com/ethereum/fe"
 description = "Provides HIR semantic analysis for Fe lang"
 
 [dependencies]
-salsa = { git = "https://github.com/salsa-rs/salsa", rev = "a1bf3a6" }
+salsa.workspace = true
 smallvec = "1.10"
 rustc-hash = "1.1.0"
 either = "1.8"