rust/src/libcollections/macros.rs
2015-01-21 16:16:18 -08:00

25 lines
964 B
Rust

// Copyright 2014-2015 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.
/// Creates a `Vec` containing the arguments.
#[macro_export]
#[stable(feature = "grandfathered", since = "1.0.0")]
macro_rules! vec {
($x:expr; $y:expr) => ({
let xs: $crate::boxed::Box<[_]> = $crate::boxed::Box::new([$x; $y]);
$crate::slice::SliceExt::into_vec(xs)
});
($($x:expr),*) => ({
let xs: $crate::boxed::Box<[_]> = $crate::boxed::Box::new([$($x),*]);
$crate::slice::SliceExt::into_vec(xs)
});
($($x:expr,)*) => (vec![$($x),*])
}