From 3ea89d553fd2151e8444148ad393b6b2cf35b4af Mon Sep 17 00:00:00 2001
From: Thomas BESSOU <thomas.bessou@hotmail.fr>
Date: Mon, 11 Dec 2023 11:44:06 +0100
Subject: [PATCH] Add support for syn 2.0.40's new Expr::Group to
 dsl::auto_type

This expression may get yielded when parsing `$a: expr` from other macros.
---
 dsl_auto_type/src/auto_type/expression_type_inference.rs | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/dsl_auto_type/src/auto_type/expression_type_inference.rs b/dsl_auto_type/src/auto_type/expression_type_inference.rs
index 5e84406ea13d..840f09fe0282 100644
--- a/dsl_auto_type/src/auto_type/expression_type_inference.rs
+++ b/dsl_auto_type/src/auto_type/expression_type_inference.rs
@@ -82,6 +82,9 @@ impl TypeInferrer<'_> {
             expr,
             type_hint.filter(|h| !matches!(h, syn::Type::Infer(_))),
         ) {
+            (syn::Expr::Group(syn::ExprGroup { expr, .. }), type_hint) => {
+                return self.try_infer_expression_type(expr, type_hint)
+            }
             (
                 syn::Expr::Tuple(syn::ExprTuple {
                     elems: expr_elems, ..