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Turn BlockId into a #[salsa::tracked] #19995

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Jun 13, 2025
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11 changes: 4 additions & 7 deletions crates/hir-def/src/db.rs
Original file line number Diff line number Diff line change
Expand Up @@ -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},
Expand Down Expand Up @@ -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]
Expand Down
4 changes: 2 additions & 2 deletions crates/hir-def/src/expr_store/lower.rs
Original file line number Diff line number Diff line change
Expand Up @@ -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,
Expand Down Expand Up @@ -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) =
Expand Down
4 changes: 2 additions & 2 deletions crates/hir-def/src/expr_store/tests/body/block.rs
Original file line number Diff line number Diff line change
Expand Up @@ -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
"#]],
);
Expand Down
21 changes: 20 additions & 1 deletion crates/hir-def/src/lib.rs
Original file line number Diff line number Diff line change
Expand Up @@ -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)) }
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I... don't like this thing.

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Well, that's how all the interned work right now. This just does the same for tracked structs since they dont have support for it. Ideally we'd have the lifetime everywhere

}
}
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)]
Expand Down