date/
iter.rs

1//! Iterator over dates
2
3use std::iter::Iterator;
4
5use crate::Date;
6use crate::interval::DateInterval;
7
8/// An iterator that will yield dates indefinitely.
9pub struct DateIterator {
10  cursor: Date,
11  end: Date,
12}
13
14impl DateIterator {
15  pub(crate) const fn new(d: &Date, end: Date) -> Self {
16    Self { cursor: *d, end }
17  }
18}
19
20impl Iterator for DateIterator {
21  type Item = Date;
22
23  fn next(&mut self) -> Option<Self::Item> {
24    match self.cursor > self.end {
25      true => None,
26      false => {
27        let answer = Some(self.cursor);
28        self.cursor += DateInterval::new(1);
29        answer
30      },
31    }
32  }
33}
34
35#[cfg(test)]
36mod tests {
37  use assert2::check;
38
39  use super::*;
40
41  #[test]
42  fn test_iter() {
43    let start = date! { 2012-04-21 };
44    check!(start.iter_through(date! { 2012-04-25 }).collect::<Vec<Date>>().len() == 5);
45    check!(start.iter_through(date! { 2012-04-21 }).collect::<Vec<Date>>().len() == 1);
46    check!(start.iter_through(date! { 2012-04-20 }).collect::<Vec<Date>>().is_empty());
47    check!(start.iter_through(Date::MAX).next().unwrap() == date! { 2012-04-21 });
48  }
49}
date/iter.rs

date/
iter.rs
