lazy_db/
version.rs

1pub use error::*;
2use std::fmt;
3
4#[derive(Debug)]
5pub struct Version {
6    pub major: u8,
7    pub minor: u8,
8    pub build: u8,
9}
10
11impl fmt::Display for Version {
12    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
13        write!(f, "{0}.{1}.{2}", self.major, self.minor, self.build)
14    }
15}
16
17impl Version {
18    pub const fn new(major: u8, minor: u8, build: u8) -> Self {
19        Self {
20            major,
21            minor,
22            build,
23        }
24    }
25
26    pub fn parse(version: &str) -> Result<Self, VersionError> {
27        let parts: Vec<&str> = version.split('.').collect();
28
29        // Checks separator count
30        if parts.len() != 3 {
31            return Err(VersionError::InvalidSeparator(format!("Expected 2 '.' separators within version, got {}", parts.len() - 1)));
32        }
33        
34        // Checks for valid numbers
35        let major = parts[0].parse::<u8>().map_err(|_| VersionError::InvalidVersion)?;
36        let minor = parts[1].parse::<u8>().map_err(|_| VersionError::InvalidVersion)?;
37        let build = parts[2].parse::<u8>().map_err(|_| VersionError::InvalidVersion)?;
38        
39        // Builds version
40        Ok(Version::new(major, minor, build))
41    }
42
43    pub fn is_compatible(&self, other: &Self) -> bool {
44        other.major == self.major && other.minor <= self.minor
45    }
46
47    pub fn is_compatible_or_else<F: FnOnce()>(&self, other: &Self, f: F) {
48        if !self.is_compatible(other) { f() }
49    }
50}
51
52pub mod error {
53    use std::{fmt, error::Error};
54
55    #[derive(Debug)]
56    pub enum VersionError {
57        InvalidSeparator(String),
58        InvalidVersion,
59    }
60
61    impl fmt::Display for VersionError {
62        fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
63            match self {
64                VersionError::InvalidSeparator(s) => write!(f, "Invalid Version Separator '{}'", s),
65                VersionError::InvalidVersion => write!(f, "Invalid Version"),
66            }
67        }
68    }
69
70    impl Error for VersionError {}
71}
lazy_db/version.rs

lazy_db/
version.rs
