1 // Copyright 2015 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.
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.
11 // pretty-expanded FIXME #23616
14 #![feature(iter_empty)]
15 #![feature(iter_once)]
16 #![feature(iter_unfold)]
17 #![feature(iterator_step_by)]
18 #![feature(str_escape)]
20 use std::iter::{empty, once, repeat};
22 fn is_sync<T>(_: T) where T: Sync {}
23 fn is_send<T>(_: T) where T: Send {}
25 macro_rules! all_sync_send {
26 ($ctor:expr, $iter:ident) => ({
32 ($ctor:expr, $iter:ident($($param:expr),+)) => ({
34 is_sync(x.$iter($( $param ),+));
36 is_send(y.$iter($( $param ),+));
38 ($ctor:expr, $iter:ident, $($rest:tt)*) => ({
39 all_sync_send!($ctor, $iter);
40 all_sync_send!($ctor, $($rest)*);
42 ($ctor:expr, $iter:ident($($param:expr),+), $($rest:tt)*) => ({
43 all_sync_send!($ctor, $iter($( $param ),+));
44 all_sync_send!($ctor, $($rest)*);
48 macro_rules! all_sync_send_mutable_ref {
49 ($ctor:expr, $($iter:ident),+) => ({
52 is_sync((&mut x).$iter());
54 is_send((&mut y).$iter());
59 macro_rules! is_sync_send {
70 all_sync_send!("Я", escape_debug, escape_default, escape_unicode);
73 all_sync_send_mutable_ref!([1], iter);
75 // Bytes implements DoubleEndedIterator
76 all_sync_send!("a".bytes(), rev);
80 all_sync_send!(a.iter(),
87 filter_map(|_| Some(1)),
94 scan(1, |_, _| Some(1)),
95 flat_map(|_| b.iter()),
99 is_sync_send!((1..).step_by(2));
100 is_sync_send!((1..2).step_by(2));
101 is_sync_send!((1..2));
102 is_sync_send!((1..));
103 is_sync_send!(repeat(1));
104 is_sync_send!(empty::<usize>());
105 is_sync_send!(once(1));