fn from_string()

in bindings/python/src/lib.rs [399:422]

• 19 lines of code
• 2 McCabe index (conditional complexity)

    fn from_string(string: &str) -> Result<Self, String> {
        let mut parts = string.split('.');
        let err = || format!("Could not parse torch package version {string}.");
        let major_str = parts.next().ok_or_else(err)?;
        let minor_str = parts.next().ok_or_else(err)?;
        let patch_str = parts.next().ok_or_else(err)?;
        // Patch is more complex and can be:
        // - `1` a number
        // - `1a0`, `1b0`, `1rc1` an alpha, beta, release candidate version
        // - `1a0+git2323` from source with commit number
        let patch_str: String = patch_str
            .chars()
            .take_while(|c| c.is_ascii_digit())
            .collect();

        let major = major_str.parse().map_err(|_| err())?;
        let minor = minor_str.parse().map_err(|_| err())?;
        let patch = patch_str.parse().map_err(|_| err())?;
        Ok(Version {
            major,
            minor,
            patch,
        })
    }