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use crate::*;
pub use Either::*;
pub enum Either<L, R>
where
L: Scanner,
R: Scanner<Input = L::Input, Output = L::Output>,
{
Left(L),
Right(R),
}
impl<L, R> Scanner for Either<L, R>
where
L: Scanner,
R: Scanner<Input = L::Input, Output = L::Output>,
{
type Input = L::Input;
type Output = L::Output;
fn scan(&self, stream: &mut Stream<Self::Input>) -> Res<Self> {
match self {
Either::Left(left) => left.scan(stream),
Either::Right(right) => right.scan(stream),
}
}
}