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// check-pass
// Regression test for issue #83190, triggering an ICE in borrowck.
pub trait Any {}
impl<T> Any for T {}
pub trait StreamOnce {
type Range;
}
pub trait Parser<Input>: Sized {
type Output;
type PartialState;
fn map(self) -> Map<Self> {
todo!()
}
}
pub struct Map<P>(P);
impl<I, P: Parser<I, Output = ()>> Parser<I> for Map<P> {
type Output = ();
type PartialState = P::PartialState;
}
struct TakeWhile1<Input>(Input);
impl<I: StreamOnce> Parser<I> for TakeWhile1<I> {
type Output = I::Range;
type PartialState = ();
}
impl<I> TakeWhile1<I> {
fn new() -> Self {
todo!()
}
}
impl<I, A: Parser<I>> Parser<I> for (A,) {
type Output = ();
type PartialState = Map<A::Output>;
}
pub fn metric_stream_parser<'a, I>() -> impl Parser<I, Output = (), PartialState = impl Any + 'a>
where
I: StreamOnce<Range = &'a [()]>,
{
(TakeWhile1::new(),).map()
}
fn main() {}
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