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// Some unusual code minimized from
// https://github.com/sile/handy_async/tree/7b619b762c06544fc67792c8ff8ebc24a88fdb98
pub trait Pattern {
type Value;
}
pub struct Constrain<A, B = A, C = A>(A, B, C);
impl<A, B, C> Pattern for Constrain<A, B, C>
where A: Pattern,
B: Pattern<Value = A::Value>,
C: Pattern<Value = A::Value>,
{
type Value = A::Value;
}
pub struct Wrapper<T>(T);
impl<T> Pattern for Wrapper<T> {
type Value = T;
}
//@ has self_referential/struct.WriteAndThen.html
//@ has - '//*[@id="synthetic-implementations-list"]//*[@class="impl"]//h3[@class="code-header"]' \
// "impl<P1> Send for WriteAndThen<P1>where <P1 as Pattern>::Value: Send"
pub struct WriteAndThen<P1>(pub P1::Value,pub <Constrain<P1, Wrapper<P1::Value>> as Pattern>::Value)
where P1: Pattern;
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