(index<- ) ./libcore/macros.rs
git branch: * master 5200215 auto merge of #14035 : alexcrichton/rust/experimental, r=huonw
modified: Fri May 9 13:02:28 2014
1 // Copyright 2014 The Rust Project Developers. See the COPYRIGHT
2 // file at the top-level directory of this distribution and at
3 // http://rust-lang.org/COPYRIGHT.
4 //
5 // Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
6 // http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
7 // <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
8 // option. This file may not be copied, modified, or distributed
9 // except according to those terms.
10
11 #![macro_escape]
12
13 /// Entry point of failure, for details, see std::macros
14 #[macro_export]
15 macro_rules! fail(
16 () => (
17 fail!("explicit failure")
18 );
19 ($msg:expr) => (
20 ::failure::begin_unwind($msg, file!(), line!())
21 );
22 )
23
24 /// Runtime assertion, for details see std::macros
25 #[macro_export]
26 macro_rules! assert(
27 ($cond:expr) => (
28 if !$cond {
29 fail!(concat!("assertion failed: ", stringify!($cond)))
30 }
31 );
32 )
33
34 /// Runtime assertion, disableable at compile time
35 #[macro_export]
36 macro_rules! debug_assert(
37 ($($arg:tt)*) => (if cfg!(not(ndebug)) { assert!($($arg)*); })
38 )