gccrs: Add operator== for Optional.

gcc/rust/ChangeLog:

	* util/rust-optional.h
	(operator==): New for Optional<T> == Optional<U>.

Signed-off-by: Owen Avery <powerboat9.gamer@gmail.com>

diff --git a/gcc/rust/util/rust-optional.h b/gcc/rust/util/rust-optional.h
index 66730bd992d9b81fe350f7a93f2181186445678a..30880cd41db0dd8722ad0b71c64d81f8f8d40e24 100644 (file)
--- a/gcc/rust/util/rust-optional.h
+++ b/gcc/rust/util/rust-optional.h
@@ -250,6 +250,16 @@ public:
   }
 };
 
+template <typename T, typename U>
+bool
+operator== (const Optional<T> &t, const Optional<U> &u)
+{
+  if (t.is_some ())
+    return u.is_some () && t.get () == u.get ();
+  else
+    return u.is_none ();
+}
+
 } // namespace Rust
 
 namespace std {