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macro_rules! delegate_iterator {
($( #[ $attr:meta ] )+
$iter:ident < $( $i:tt ),* > => $( $inner:ident )::+ < $item:ty > ,
impl $( $args:tt )*
) => {
delegate_iterator_item!{
$( #[ $attr ] )+
$iter < $( $i ),* > => $( $inner )::+ < $item > : $item ,
impl $( $args )*
}
}
}
macro_rules! delegate_indexed_iterator {
($( #[ $attr:meta ] )+
$iter:ident < $( $i:tt ),* > => $( $inner:ident )::+ < $item:ty > ,
impl $( $args:tt )*
) => {
delegate_indexed_iterator_item!{
$( #[ $attr ] )+
$iter < $( $i ),* > => $( $inner )::+ < $item > : $item ,
impl $( $args )*
}
}
}
macro_rules! delegate_iterator_item {
($( #[ $attr:meta ] )+
$iter:ident < $( $i:tt ),* > => $inner:ty : $item:ty,
impl $( $args:tt )*
) => {
$( #[ $attr ] )+
pub struct $iter $( $args )* {
inner: $inner,
}
impl $( $args )* ParallelIterator for $iter < $( $i ),* > {
type Item = $item;
fn drive_unindexed<C>(self, consumer: C) -> C::Result
where C: UnindexedConsumer<Self::Item>
{
self.inner.drive_unindexed(consumer)
}
fn opt_len(&mut self) -> Option<usize> {
self.inner.opt_len()
}
}
}
}
macro_rules! delegate_indexed_iterator_item {
($( #[ $attr:meta ] )+
$iter:ident < $( $i:tt ),* > => $inner:ty : $item:ty,
impl $( $args:tt )*
) => {
delegate_iterator_item!{
$( #[ $attr ] )+
$iter < $( $i ),* > => $inner : $item ,
impl $( $args )*
}
impl $( $args )* BoundedParallelIterator for $iter < $( $i ),* > {
fn upper_bound(&mut self) -> usize {
self.inner.upper_bound()
}
fn drive<C>(self, consumer: C) -> C::Result
where C: Consumer<Self::Item>
{
self.inner.drive(consumer)
}
}
impl $( $args )* ExactParallelIterator for $iter < $( $i ),* > {
fn len(&mut self) -> usize {
self.inner.len()
}
}
impl $( $args )* IndexedParallelIterator for $iter < $( $i ),* > {
fn with_producer<CB>(self, callback: CB) -> CB::Output
where CB: ProducerCallback<Self::Item>
{
self.inner.with_producer(callback)
}
}
}
}