Impl Render for Arc<Render> (#380)

* Arc

* Changelog

CHANGELOG.md

@@ -4,6 +4,8 @@
 
 - Remove `AsRef<str>` restriction from `PreEscaped`
   [#377](https://github.com/lambda-fairy/maud/pull/377)
+- Implement `Render` for `Arc<T>`
+  [#380](https://github.com/lambda-fairy/maud/pull/380)
 
 ## [0.25.0] - 2023-04-16
 

maud/src/lib.rs

@@ -11,7 +11,7 @@
 
 extern crate alloc;
 
-use alloc::{borrow::Cow, boxed::Box, string::String};
+use alloc::{borrow::Cow, boxed::Box, string::String, sync::Arc};
 use core::fmt::{self, Arguments, Display, Write};
 
 pub use maud_macros::html;
@@ -150,6 +150,12 @@ impl<T: Render + ?Sized> Render for Box<T> {
     }
 }
 
+impl<T: Render + ?Sized> Render for Arc<T> {
+    fn render_to(&self, w: &mut String) {
+        T::render_to(self, w);
+    }
+}
+
 macro_rules! impl_render_with_display {
     ($($ty:ty)*) => {
         $(

maud/tests/misc.rs

@@ -137,3 +137,9 @@ fn default() {
     assert_eq!(Markup::default().0, "");
     assert_eq!(PreEscaped::<&'static str>::default().0, "");
 }
+
+#[test]
+fn render_arc() {
+    let arc = std::sync::Arc::new("foo");
+    assert_eq!(html! { (arc) }.into_string(), "foo");
+}