requirements 0.3.0

Python PIP requirements.txt parser
Documentation 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33

use std::fmt;

/// Semver comparison operators
///
/// Abstraction of semver comparison operators.
#[derive(Debug, PartialEq)]
pub enum Comparison {
    LessThan,
    LessThanOrEqual,
    NotEqual,
    Equal,
    GreaterThanOrEqual,
    GreaterThan,
    CompatibleRelease,
    ArbitraryEqual,
}

impl fmt::Display for Comparison {
    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
        use Comparison::*;
        let sign = match self {
            LessThan => "<",
            LessThanOrEqual => "<=",
            NotEqual => "!=",
            Equal => "==",
            GreaterThanOrEqual => ">=",
            GreaterThan => ">",
            CompatibleRelease => "~=",
            ArbitraryEqual => "===",
        };
        write!(f, "{}", sign)
    }
}