hdrhistogram/iterators/
all.rs

1use crate::core::counter::Counter;
2use crate::iterators::{HistogramIterator, PickMetadata, PickyIterator};
3use crate::Histogram;
4
5/// An iterator that will yield every bin.
6pub struct Iter {
7    visited: Option<usize>,
8}
9
10impl Iter {
11    /// Construct a new full iterator. See `Histogram::iter_all` for details.
12    pub fn new<T: Counter>(hist: &Histogram<T>) -> HistogramIterator<T, Iter> {
13        HistogramIterator::new(hist, Iter { visited: None })
14    }
15}
16
17impl<T: Counter> PickyIterator<T> for Iter {
18    fn pick(&mut self, index: usize, _: u64, _: T) -> Option<PickMetadata> {
19        if self.visited.map(|i| i != index).unwrap_or(true) {
20            // haven't visited this index yet
21            self.visited = Some(index);
22            Some(PickMetadata::new(None, None))
23        } else {
24            None
25        }
26    }
27
28    fn more(&mut self, _: usize) -> bool {
29        true
30    }
31}