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(str_escape)]
19 use std::iter::{empty, once, repeat};
21 fn is_sync<T>(_: T) where T: Sync {}
22 fn is_send<T>(_: T) where T: Send {}
24 macro_rules! all_sync_send {
25 ($ctor:expr, $iter:ident) => ({
31 ($ctor:expr, $iter:ident($($param:expr),+)) => ({
33 is_sync(x.$iter($( $param ),+));
35 is_send(y.$iter($( $param ),+));
37 ($ctor:expr, $iter:ident, $($rest:tt)*) => ({
38 all_sync_send!($ctor, $iter);
39 all_sync_send!($ctor, $($rest)*);
41 ($ctor:expr, $iter:ident($($param:expr),+), $($rest:tt)*) => ({
42 all_sync_send!($ctor, $iter($( $param ),+));
43 all_sync_send!($ctor, $($rest)*);
47 macro_rules! all_sync_send_mutable_ref {
48 ($ctor:expr, $($iter:ident),+) => ({
51 is_sync((&mut x).$iter());
53 is_send((&mut y).$iter());
58 macro_rules! is_sync_send {
69 all_sync_send!("Я", escape_debug, escape_default, escape_unicode);
72 all_sync_send_mutable_ref!([1], iter);
74 // Bytes implements DoubleEndedIterator
75 all_sync_send!("a".bytes(), rev);
79 all_sync_send!(a.iter(),
86 filter_map(|_| Some(1)),
93 scan(1, |_, _| Some(1)),
94 flat_map(|_| b.iter()),
98 is_sync_send!((1..).step_by(2));
99 is_sync_send!((1..2).step_by(2));
100 is_sync_send!((1..2));
101 is_sync_send!((1..));
102 is_sync_send!(repeat(1));
103 is_sync_send!(empty::<usize>());
104 is_sync_send!(once(1));