From 84fda626780f43dc13ca06489058efbf019a8000 Mon Sep 17 00:00:00 2001
From: Sergio Benitez <sb@sergio.bz>
Date: Fri, 19 Mar 2021 18:04:28 -0700
Subject: [PATCH] Emit query parse code only when there's a query.

---
 core/codegen/src/attribute/route/mod.rs | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/core/codegen/src/attribute/route/mod.rs b/core/codegen/src/attribute/route/mod.rs
index 509f84b0..535a99dc 100644
--- a/core/codegen/src/attribute/route/mod.rs
+++ b/core/codegen/src/attribute/route/mod.rs
@@ -24,6 +24,10 @@ impl Route {
 fn query_decls(route: &Route) -> Option<TokenStream> {
     use devise::ext::{Split2, Split6};
 
+    if route.query_params.is_empty() && route.query_guards().next().is_none() {
+        return None;
+    }
+
     define_spanned_export!(Span::call_site() =>
         __req, __data, _log, _form, Outcome, _Ok, _Err, _Some, _None
     );