58 lines
1.3 KiB
Rust
58 lines
1.3 KiB
Rust
use std::error::Error;
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use std::fmt;
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use std::str::FromStr;
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#[derive(Clone, Debug, Eq, PartialEq)]
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pub struct Position {
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pub x: u8,
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pub y: u8,
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}
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impl Error for Position {}
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impl FromStr for Position {
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type Err = String;
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fn from_str(s: &str) -> Result<Self, Self::Err> {
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let mut parts = s.split(',');
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let x = parts.next().unwrap().parse();
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let y = parts.next().unwrap().parse();
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if x.is_err() {
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Err("bad x supplied for position".to_string())
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} else if y.is_err() {
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Err("bad y supplied for position".to_string())
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} else {
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let x = x.unwrap();
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let y = y.unwrap();
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Ok(Position { x, y })
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}
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}
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}
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impl fmt::Display for Position {
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#[inline]
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fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
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write!(f, "{},{}", self.x, self.y)
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}
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}
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#[cfg(test)]
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mod test {
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use crate::position::Position;
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use std::str::FromStr;
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#[test]
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fn test_position_from_str() {
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assert_eq!(
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Position::from_str(&"4,12").unwrap(),
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Position { x: 4, y: 12 }
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);
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}
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#[test]
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fn test_position_to_string() {
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assert_eq!(Position { x: 4, y: 12 }.to_string(), "4,12".to_string())
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}
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}
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