tabled/settings/peaker/
right.rs

1use super::Peaker;
2
3/// A Peaker which goes over column 1 by 1, from right side, but truncates as much as possible right side.
4#[derive(Debug, Default, Clone, PartialEq, Eq, PartialOrd, Ord, Copy, Hash)]
5pub struct PriorityRight {
6    i: Option<usize>,
7}
8
9impl PriorityRight {
10    /// Creates a new priority which does not target anything.
11    pub const fn new() -> Self {
12        Self { i: None }
13    }
14}
15
16impl Peaker for PriorityRight {
17    fn peak(&mut self, min: &[usize], widths: &[usize]) -> Option<usize> {
18        if widths.is_empty() {
19            return None;
20        }
21
22        if self.i.is_none() {
23            self.i = Some(widths.len() - 1);
24        }
25
26        let col = self.i.expect("checked");
27        if widths[col] > min[col] {
28            return Some(col);
29        }
30
31        if col == 0 {
32            return None;
33        }
34
35        let mut col = col - 1;
36        while widths[col] == min[col] {
37            if col == 0 {
38                return None;
39            }
40
41            col -= 1;
42        }
43
44        Some(col)
45    }
46}
tabled/settings/peaker/right.rs

tabled/settings/peaker/
right.rs
