1 files changed, 20 insertions, 0 deletions
diff --git a/vendor/overload/src/unary.rs b/vendor/overload/src/unary.rs
new file mode 100644
index 000000000..da8f6b590
--- /dev/null
+++ b/vendor/overload/src/unary.rs
@@ -0,0 +1,20 @@
+#[doc(hidden)]
+#[macro_export(local_inner_macros)]
+macro_rules! _overload_unary {
+    (-, $($t:tt)+) => (_overload_unary_internal!(Neg, neg, $($t)+););
+    (!, $($t:tt)+) => (_overload_unary_internal!(Not, not, $($t)+););
+}
+
+#[doc(hidden)]
+#[macro_export(local_inner_macros)]
+macro_rules! _overload_unary_internal {
+    ($op_trait:ident, $op_fn:ident, $i:ident, $t:ty, $out:ty, $body:block) => (        
+        impl ops::$op_trait for $t {
+            type Output = $out;
+            fn $op_fn(self) -> Self::Output {
+                let $i = self;
+                $body
+            }
+        }
+    );
+}