mirror of https://github.com/rust-lang/rust
106 lines
2.5 KiB
Rust
106 lines
2.5 KiB
Rust
//@ run-pass
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//@ pretty-expanded FIXME #23616
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#![allow(warnings)]
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use std::iter::{empty, once, repeat};
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fn is_sync<T>(_: T) where T: Sync {}
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fn is_send<T>(_: T) where T: Send {}
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macro_rules! all_sync_send {
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($ctor:expr, $iter:ident) => ({
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let mut x = $ctor;
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is_sync(x.$iter());
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let mut y = $ctor;
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is_send(y.$iter());
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});
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($ctor:expr, $iter:ident($($param:expr),+)) => ({
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let mut x = $ctor;
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is_sync(x.$iter($( $param ),+));
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let mut y = $ctor;
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is_send(y.$iter($( $param ),+));
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});
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($ctor:expr, $iter:ident, $($rest:tt)*) => ({
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all_sync_send!($ctor, $iter);
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all_sync_send!($ctor, $($rest)*);
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});
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($ctor:expr, $iter:ident($($param:expr),+), $($rest:tt)*) => ({
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all_sync_send!($ctor, $iter($( $param ),+));
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all_sync_send!($ctor, $($rest)*);
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});
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}
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macro_rules! all_sync_send_mutable_ref {
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($ctor:expr, $($iter:ident),+) => ({
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$(
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let mut x = $ctor;
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is_sync((&mut x).$iter());
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let mut y = $ctor;
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is_send((&mut y).$iter());
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)+
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})
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}
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macro_rules! is_sync_send {
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($ctor:expr) => ({
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let x = $ctor;
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is_sync(x);
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let y = $ctor;
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is_send(y);
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})
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}
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fn main() {
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// for char.rs
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all_sync_send!("Я", escape_debug, escape_default, escape_unicode);
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// for iter.rs
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all_sync_send_mutable_ref!([1], iter);
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// Bytes implements DoubleEndedIterator
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all_sync_send!("a".bytes(), rev);
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let a = [1];
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let b = [2];
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all_sync_send!(a.iter(),
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cloned,
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cycle,
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chain([2].iter()),
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zip([2].iter()),
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map(|_| 1),
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filter(|_| true),
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filter_map(|_| Some(1)),
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enumerate,
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peekable,
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skip_while(|_| true),
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take_while(|_| true),
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skip(1),
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take(1),
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scan(1, |_, _| Some(1)),
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flat_map(|_| b.iter()),
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fuse,
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inspect(|_| ()));
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is_sync_send!((1..).step_by(2));
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is_sync_send!((1..2).step_by(2));
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is_sync_send!((1..2));
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is_sync_send!((1..));
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is_sync_send!(repeat(1));
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is_sync_send!(empty::<usize>());
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is_sync_send!(empty::<*mut i32>());
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is_sync_send!(once(1));
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// for option.rs
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// FIXME
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// for result.rs
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// FIXME
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// for slice.rs
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// FIXME
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// for str/mod.rs
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// FIXME
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}
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