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/*
==--==--==--==--==--==--==--==--==--==--==--==--==--==--==--==--
Dia-Semver
Copyright (C) 2018-2022 Anonymous
There are several releases over multiple years,
they are listed as ranges, such as: "2018-2022".
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with this program. If not, see <https://www.gnu.org/licenses/>.
::--::--::--::--::--::--::--::--::--::--::--::--::--::--::--::--
*/
use core::fmt::{self, Display, Formatter};
/// # Pre-release.
///
/// Some common pre-release phrases. Note that their string representation is in _lower-case_.
///
/// You can get this by [`Semver::parse_pre_release()`][Semver::parse_pre_release()].
///
/// [Semver::parse_pre_release()]: struct.Semver.html#method.parse_pre_release
#[derive(Debug, PartialEq, Eq)]
pub enum PreRelease {
/// # Alpha
Alpha,
/// # Beta
Beta,
/// # RC
RC,
/// # Other
Other,
}
impl PreRelease {
/// # Parses a string to get a pre-release
///
/// Notes:
///
/// - The string should be passed from a **parsed** semver.
/// - Case is ignored.
pub (crate) fn parse<S>(parsed_pre_release: S) -> Self where S: AsRef<str> {
let parsed_pre_release = parsed_pre_release.as_ref();
// Note: do NOT trim the string
let parsed_pre_release = parsed_pre_release.to_lowercase();
if parsed_pre_release.starts_with("alpha") {
return PreRelease::Alpha;
} else if parsed_pre_release.starts_with("beta") {
return PreRelease::Beta;
} else if parsed_pre_release.starts_with("rc") {
return PreRelease::RC;
}
PreRelease::Other
}
}
impl Display for PreRelease {
fn fmt(&self, f: &mut Formatter) -> Result<(), fmt::Error> {
f.write_str(match self {
PreRelease::Alpha => "alpha",
PreRelease::Beta => "beta",
PreRelease::RC => "rc",
PreRelease::Other => "other",
})
}
}