From eba3367404e9ca6abf84199b5c2dbe51ce6cdbde Mon Sep 17 00:00:00 2001
From: Patrick Walton <pcwalton@mimiga.net>
Date: Fri, 22 Mar 2013 13:11:03 -0700
Subject: libsyntax: Introduce the new `assert!` macro; make `assert` no longer
 a keyword

---
 src/libsyntax/ext/expand.rs | 13 +++++++++++++
 1 file changed, 13 insertions(+)

(limited to 'src/libsyntax/ext')

diff --git a/src/libsyntax/ext/expand.rs b/src/libsyntax/ext/expand.rs
index 27b35b37849..46ded7ecf3d 100644
--- a/src/libsyntax/ext/expand.rs
+++ b/src/libsyntax/ext/expand.rs
@@ -464,6 +464,19 @@ pub fn core_macros() -> ~str {
         }
     )
 
+    macro_rules! assert(
+        ($cond:expr) => {
+            if !$cond {
+                ::core::sys::fail_assert(stringify!($cond), file!(), line!())
+            }
+        };
+        ($cond:expr, $msg:expr) => {
+            if !$cond {
+                ::core::sys::fail_assert($msg, file!(), line!())
+            }
+        }
+    )
+
     macro_rules! assert_eq (
         ($given:expr , $expected:expr) =>
         ({let given_val = $given;
-- 
cgit 1.4.1-3-g733a5