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macro_rules! steps {
($fut:ty { $($step:ident($ty:ty),)+ }) => (
enum Step {
$($step($ty),)+
}
enum Out {
$($step(<$ty as Future>::Item),)+
}
impl $fut {
fn either_poll(&mut self) -> Result<Async<Out>> {
match self.step {
$(Step::$step(ref mut fut) => Ok(Ready(Out::$step(try_ready!(fut.poll())))),)+
}
}
}
);
}
#[macro_export]
macro_rules! params {
($($name:expr => $value:expr),*) => (
vec![
$((::std::string::String::from($name), $crate::Value::from($value))),*
]
);
($($name:expr => $value:expr),*,) => (
params!($($name => $value),*)
);
}