src/vendor/rayon/src/iter/noop.rs

   1 use super::plumbing::*;
   2
   3 pub struct NoopConsumer;
   4
   5 impl NoopConsumer {
   6     pub fn new() -> Self {
   7         NoopConsumer
   8     }
   9 }
  10
  11 impl<T> Consumer<T> for NoopConsumer {
  12     type Folder = NoopConsumer;
  13     type Reducer = NoopReducer;
  14     type Result = ();
  15
  16     fn split_at(self, _index: usize) -> (Self, Self, NoopReducer) {
  17         (NoopConsumer, NoopConsumer, NoopReducer)
  18     }
  19
  20     fn into_folder(self) -> Self {
  21         self
  22     }
  23
  24     fn full(&self) -> bool {
  25         false
  26     }
  27 }
  28
  29 impl<T> Folder<T> for NoopConsumer {
  30     type Result = ();
  31
  32     fn consume(self, _item: T) -> Self {
  33         self
  34     }
  35
  36    fn consume_iter<I>(self, iter: I) -> Self where I: IntoIterator<Item=T> {
  37         iter.into_iter().fold((), |_, _| ());
  38         self
  39    }
  40
  41     fn complete(self) {}
  42
  43     fn full(&self) -> bool {
  44         false
  45     }
  46 }
  47
  48 impl<T> UnindexedConsumer<T> for NoopConsumer {
  49     fn split_off_left(&self) -> Self {
  50         NoopConsumer
  51     }
  52
  53     fn to_reducer(&self) -> NoopReducer {
  54         NoopReducer
  55     }
  56 }
  57
  58 pub struct NoopReducer;
  59
  60 impl Reducer<()> for NoopReducer {
  61     fn reduce(self, _left: (), _right: ()) {}
  62 }