| # use std::{cmp, hash}; |
| # #[derive(PartialEq, Hash)] |
| # struct Identifier; |
| pub struct Version { |
| /// The major version. |
| pub major: u64, |
| /// The minor version. |
| pub minor: u64, |
| /// The patch version. |
| pub patch: u64, |
| /// The pre-release version identifier. |
| pub pre: Vec<Identifier>, |
| /// The build metadata, ignored when |
| /// determining version precedence. |
| pub build: Vec<Identifier>, |
| } |
| |
| impl cmp::PartialEq for Version { |
| #[inline] |
| fn eq(&self, other: &Version) -> bool { |
| // We should ignore build metadata |
| // here, otherwise versions v1 and |
| // v2 can exist such that !(v1 < v2) |
| // && !(v1 > v2) && v1 != v2, which |
| // violate strict total ordering rules. |
| self.major == other.major && |
| self.minor == other.minor && |
| self.patch == other.patch && |
| self.pre == other.pre |
| } |
| } |
| |
| impl hash::Hash for Version { |
| fn hash<H: hash::Hasher>(&self, into: &mut H) { |
| self.major.hash(into); |
| self.minor.hash(into); |
| self.patch.hash(into); |
| self.pre.hash(into); |
| } |
| } |
