Merge pull request rust-lang#19995 from Veykril/push-zpyyzqqpywno

Turn `BlockId` into a `#[salsa::tracked]`

Author: Veykril

src/tools/rust-analyzer/crates/hir-def/src/db.rs

@@ -12,10 +12,10 @@ use thin_vec::ThinVec;
 use triomphe::Arc;
 
 use crate::{
-    AttrDefId, BlockId, BlockLoc, ConstId, ConstLoc, DefWithBodyId, EnumId, EnumLoc, EnumVariantId,
-    EnumVariantLoc, ExternBlockId, ExternBlockLoc, ExternCrateId, ExternCrateLoc, FunctionId,
-    FunctionLoc, GenericDefId, ImplId, ImplLoc, LocalFieldId, Macro2Id, Macro2Loc, MacroExpander,
-    MacroId, MacroRulesId, MacroRulesLoc, MacroRulesLocFlags, ProcMacroId, ProcMacroLoc, StaticId,
+    AttrDefId, ConstId, ConstLoc, DefWithBodyId, EnumId, EnumLoc, EnumVariantId, EnumVariantLoc,
+    ExternBlockId, ExternBlockLoc, ExternCrateId, ExternCrateLoc, FunctionId, FunctionLoc,
+    GenericDefId, ImplId, ImplLoc, LocalFieldId, Macro2Id, Macro2Loc, MacroExpander, MacroId,
+    MacroRulesId, MacroRulesLoc, MacroRulesLocFlags, ProcMacroId, ProcMacroLoc, StaticId,
     StaticLoc, StructId, StructLoc, TraitAliasId, TraitAliasLoc, TraitId, TraitLoc, TypeAliasId,
     TypeAliasLoc, UnionId, UnionLoc, UseId, UseLoc, VariantId,
     attr::{Attrs, AttrsWithOwner},
@@ -96,9 +96,6 @@ pub trait InternDatabase: RootQueryDb {
     #[salsa::interned]
     fn intern_macro_rules(&self, loc: MacroRulesLoc) -> MacroRulesId;
     // // endregion: items
-
-    #[salsa::interned]
-    fn intern_block(&self, loc: BlockLoc) -> BlockId;
 }
 
 #[query_group::query_group]

src/tools/rust-analyzer/crates/hir-def/src/expr_store/lower.rs

@@ -11,7 +11,7 @@ use base_db::FxIndexSet;
 use cfg::CfgOptions;
 use either::Either;
 use hir_expand::{
-    HirFileId, InFile, MacroDefId,
+    HirFileId, InFile, Intern, MacroDefId,
     mod_path::tool_path,
     name::{AsName, Name},
     span_map::SpanMapRef,
@@ -2148,7 +2148,7 @@ impl ExprCollector<'_> {
     ) -> ExprId {
         let block_id = self.expander.ast_id_map().ast_id_for_block(&block).map(|file_local_id| {
             let ast_id = self.expander.in_file(file_local_id);
-            self.db.intern_block(BlockLoc { ast_id, module: self.module })
+            BlockLoc { ast_id, module: self.module }.intern(self.db)
         });
 
         let (module, def_map) =

src/tools/rust-analyzer/crates/hir-def/src/expr_store/tests/body/block.rs

@@ -189,8 +189,8 @@ fn f() {
 }
     "#,
         expect![[r#"
-            BlockId(3c01) in BlockRelativeModuleId { block: Some(BlockId(3c00)), local_id: Idx::<ModuleData>(1) }
-            BlockId(3c00) in BlockRelativeModuleId { block: None, local_id: Idx::<ModuleData>(0) }
+            BlockIdLt { [salsa id]: Id(3c01) } in BlockRelativeModuleId { block: Some(BlockIdLt { [salsa id]: Id(3c00) }), local_id: Idx::<ModuleData>(1) }
+            BlockIdLt { [salsa id]: Id(3c00) } in BlockRelativeModuleId { block: None, local_id: Idx::<ModuleData>(0) }
             crate scope
         "#]],
     );

src/tools/rust-analyzer/crates/hir-def/src/lib.rs

@@ -344,7 +344,26 @@ pub struct BlockLoc {
     /// The containing module.
     pub module: ModuleId,
 }
-impl_intern!(BlockId, BlockLoc, intern_block, lookup_intern_block);
+#[salsa_macros::tracked(debug)]
+#[derive(PartialOrd, Ord)]
+pub struct BlockIdLt<'db> {
+    pub loc: BlockLoc,
+}
+pub type BlockId = BlockIdLt<'static>;
+impl hir_expand::Intern for BlockLoc {
+    type Database = dyn DefDatabase;
+    type ID = BlockId;
+    fn intern(self, db: &Self::Database) -> Self::ID {
+        unsafe { std::mem::transmute::<BlockIdLt<'_>, BlockId>(BlockIdLt::new(db, self)) }
+    }
+}
+impl hir_expand::Lookup for BlockId {
+    type Database = dyn DefDatabase;
+    type Data = BlockLoc;
+    fn lookup(&self, db: &Self::Database) -> Self::Data {
+        self.loc(db)
+    }
+}
 
 /// A `ModuleId` that is always a crate's root module.
 #[derive(Debug, Clone, Copy, PartialEq, Eq, Hash)]