1 files changed, 3 insertions, 0 deletions

diff --git a/crates/hir_expand/src/lib.rs b/crates/hir_expand/src/lib.rs
index a179102f0..8637abc6a 100644
--- a/crates/hir_expand/src/lib.rs
+++ b/crates/hir_expand/src/lib.rs
@@ -294,6 +294,9 @@ pub enum MacroCallKind {
     Derive { ast_id: AstId<ast::Item>, derive_name: String },
 }
 
+#[derive(Debug, Clone, Copy, PartialEq, Eq, Hash)]
+pub struct AttrId(pub u32);
+
 impl MacroCallKind {
     fn file_id(&self) -> HirFileId {
         match self {