From 5fe400c006d9d143aa7b977cb13f95e7380754a5 Mon Sep 17 00:00:00 2001
From: 魏曹先生 <1992414357@qq.com>
Date: Sat, 16 May 2026 21:55:55 +0800
Subject: Validate single-segment types in attribute macros

---
 mingling_macros/src/renderer.rs | 5 +++++
 1 file changed, 5 insertions(+)

(limited to 'mingling_macros/src/renderer.rs')

diff --git a/mingling_macros/src/renderer.rs b/mingling_macros/src/renderer.rs
index 362a4a4..565ffa3 100644
--- a/mingling_macros/src/renderer.rs
+++ b/mingling_macros/src/renderer.rs
@@ -76,6 +76,11 @@ pub fn renderer_attr(item: TokenStream) -> TokenStream {
         Err(e) => return e.to_compile_error().into(),
     };
 
+    // Check that the previous type is a single-segment type (no `::`)
+    if let Some(err_tokens) = crate::check_single_segment_type(&previous_type, "#[renderer]") {
+        return err_tokens.into();
+    }
+
     // Validate return type
     if let Err(e) = extract_return_type(&input_fn.sig) {
         return e.to_compile_error().into();
-- 
cgit