From 188b0f96f98feaa0771f941343887c46113c8ced Mon Sep 17 00:00:00 2001
From: Aleksey Kladov <aleksey.kladov@gmail.com>
Date: Sat, 22 May 2021 16:53:47 +0300
Subject: Add more docs

---
 crates/hir/src/db.rs | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

(limited to 'crates/hir/src/db.rs')

diff --git a/crates/hir/src/db.rs b/crates/hir/src/db.rs
index ffc8155b9..19898f683 100644
--- a/crates/hir/src/db.rs
+++ b/crates/hir/src/db.rs
@@ -1,5 +1,8 @@
-//! FIXME: write short doc here
-
+//! Re-exports various subcrates databases so that the calling code can depend
+//! only on `hir`. This breaks abstraction boundary a bit, it would be cool if
+//! we didn't do that.
+//!
+//! But we need this for at least LRU caching at the query level.
 pub use hir_def::db::*;
 pub use hir_expand::db::{
     AstDatabase, AstDatabaseStorage, AstIdMapQuery, HygieneFrameQuery, InternMacroQuery,
-- 
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