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use crate::inner_deref::InnerDerefMut;
pub trait Observer<Item, Err> {
fn next(&mut self, value: Item);
fn error(&mut self, err: Err);
fn complete(&mut self);
fn is_stopped(&self) -> bool;
}
#[doc(hidden)]
pub(crate) macro next_proxy_impl(
$item: ident, $($name:tt $($parentheses:tt)?) .+)
{
#[inline]
fn next(&mut self, value: $item) {
self.$($name$($parentheses)?).+.next(value);
}
}
#[doc(hidden)]
pub(crate) macro error_proxy_impl(
$err: ident, $($name:tt $($parentheses:tt)?) .+)
{
#[inline]
fn error(&mut self, err: $err) {
self.$($name$($parentheses)?).+.error(err);
}
}
#[doc(hidden)]
pub(crate) macro complete_proxy_impl($($name:tt $($parentheses:tt)?) .+) {
#[inline]
fn complete(&mut self) { self.$($name$($parentheses)?).+.complete(); }
}
#[doc(hidden)]
pub(crate) macro is_stopped_proxy_impl($($name:tt $($parentheses:tt)?) .+) {
#[inline]
fn is_stopped(&self) -> bool { self.$($name$($parentheses)?).+.is_stopped() }
}
impl<Item, Err, T> Observer<Item, Err> for T
where
T: InnerDerefMut,
T::Target: Observer<Item, Err>,
{
fn next(&mut self, value: Item) { self.inner_deref_mut().next(value) }
fn error(&mut self, err: Err) { self.inner_deref_mut().error(err); }
fn complete(&mut self) { self.inner_deref_mut().complete(); }
fn is_stopped(&self) -> bool { self.inner_deref().is_stopped() }
}