Merge #2179

2179: Use HirDatabase to compute `is_deprecated` r=matklad a=martskins

This PR fixes #2167 by introducing `attributes_query` and adding `fn attrs(&self, def: crate::AttrDef) -> Option<Arc<[Attr]>>;`  to the `DefDatabase` trait.

I'm a little concerned about the two spots in `attributes_query` where code is repeated, but I couldn't figure out a way to avoid that, so.. I welcome suggestions :smile: 



Co-authored-by: Martin Asquino <[email protected]>

1 files changed, 4 insertions, 0 deletions

diff --git a/crates/ra_hir/src/db.rs b/crates/ra_hir/src/db.rs
index 11b3f94ae..75c322c99 100644
--- a/crates/ra_hir/src/db.rs
+++ b/crates/ra_hir/src/db.rs
@@ -2,6 +2,7 @@
 
 use std::sync::Arc;
 
+use hir_def::attr::Attr;
 use ra_db::salsa;
 use ra_syntax::SmolStr;
 
@@ -75,6 +76,9 @@ pub trait DefDatabase: HirDebugDatabase + DefDatabase2 {
 
     #[salsa::invoke(crate::code_model::docs::documentation_query)]
     fn documentation(&self, def: crate::DocDef) -> Option<crate::Documentation>;
+
+    #[salsa::invoke(crate::code_model::attrs::attributes_query)]
+    fn attrs(&self, def: crate::AttrDef) -> Option<Arc<[Attr]>>;
 }
 
 #[salsa::query_group(HirDatabaseStorage)]