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