From bf6aead81ce746b53cce5d303513835e713a0cfb Mon Sep 17 00:00:00 2001
From: Austin Bonander <austin.bonander@gmail.com>
Date: Wed, 20 Nov 2019 09:26:31 +0000
Subject: [PATCH] comment on weird use of match/if-guards

---
 sqlx-macros/src/backend/mod.rs | 1 +
 1 file changed, 1 insertion(+)

diff --git a/sqlx-macros/src/backend/mod.rs b/sqlx-macros/src/backend/mod.rs
index 572cd8ac..4dd0f4cb 100644
--- a/sqlx-macros/src/backend/mod.rs
+++ b/sqlx-macros/src/backend/mod.rs
@@ -14,6 +14,7 @@ macro_rules! impl_backend_ext {
 
                 match () {
                     $(
+                        // `if` statements cannot have attributes but these can
                         $(#[$meta])?
                         _ if <$backend as sqlx::types::HasSqlType<$ty>>::metadata().type_id_eq(id) => Some(borrowed_ty!($ty $(, $borrowed)?)),
                     )*