1 files changed, 36 insertions, 0 deletions
diff --git a/src/libcore/nil.rs b/src/libcore/nil.rs
new file mode 100644
index 00000000000..5e306d4b57d
--- /dev/null
+++ b/src/libcore/nil.rs
@@ -0,0 +1,36 @@
+// Copyright 2012 The Rust Project Developers. See the COPYRIGHT
+// file at the top-level directory of this distribution and at
+// http://rust-lang.org/COPYRIGHT.
+//
+// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
+// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
+// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
+// option. This file may not be copied, modified, or distributed
+// except according to those terms.
+
+/*!
+
+Functions for the unit type.
+
+*/
+
+// NB: transitionary, de-mode-ing.
+#[forbid(deprecated_mode)];
+#[forbid(deprecated_pattern)];
+
+use cmp::{Eq, Ord};
+
+#[cfg(notest)]
+impl () : Eq {
+    pure fn eq(&self, _other: &()) -> bool { true }
+    pure fn ne(&self, _other: &()) -> bool { false }
+}
+
+#[cfg(notest)]
+impl () : Ord {
+    pure fn lt(&self, _other: &()) -> bool { false }
+    pure fn le(&self, _other: &()) -> bool { true }
+    pure fn ge(&self, _other: &()) -> bool { true }
+    pure fn gt(&self, _other: &()) -> bool { false }
+}
+