chess_move_gen/
side.rs

1use std::fmt;
2
3type SideInternal = usize;
4
5/// Represents a side to move
6#[derive(PartialEq, PartialOrd, Copy, Clone)]
7pub struct Side(pub SideInternal);
8
9const CHARS: [char; 2] = ['w', 'b'];
10const NAMES: [&str; 2] = ["white", "black"];
11
12impl Side {
13    pub fn to_char(self) -> char {
14        CHARS[self.to_usize()]
15    }
16
17    pub fn to_usize(self) -> usize {
18        self.0
19    }
20
21    pub fn raw(self) -> SideInternal {
22        self.0
23    }
24
25    /// Flip switches sides
26    pub fn flip(self) -> Side {
27        Side(self.0 ^ 1)
28    }
29
30    pub fn parse(c: char) -> Result<Side, String> {
31        for (i, _c) in CHARS.iter().enumerate() {
32            if *_c == c {
33                return Ok(Side(i));
34            }
35        }
36        Err(format!("Side not recognised: {}", c))
37    }
38
39    pub fn to_str(self) -> &'static str {
40        NAMES[self.0]
41    }
42}
43
44impl fmt::Display for Side {
45    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
46        write!(f, "{}", self.to_char())
47    }
48}
49
50impl fmt::Debug for Side {
51    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
52        write!(f, "{}", self.to_char())
53    }
54}
55
56pub const WHITE: Side = Side(0);
57pub const BLACK: Side = Side(1);
58
59#[cfg(test)]
60mod test {
61    use super::*;
62
63    #[test]
64    fn char() {
65        assert_eq!(BLACK.to_char(), 'b');
66        assert_eq!(WHITE.to_char(), 'w');
67    }
68
69    #[test]
70    fn flip() {
71        assert_eq!(BLACK.flip(), WHITE);
72        assert_eq!(WHITE.flip(), BLACK);
73    }
74}
chess_move_gen/side.rs

chess_move_gen/
side.rs
