1/// Origin of the argument's value
2#[derive(Debug, Clone, Copy, PartialEq, Eq, PartialOrd, Ord)]
3#[non_exhaustive]
4pub enum ValueSource {
5    /// Value came [`Arg::default_value`][crate::Arg::default_value]
6    DefaultValue,
7    /// Value came [`Arg::env`][crate::Arg::env]
8    EnvVariable,
9    /// Value was passed in on the command-line
10    CommandLine,
11}
12
13impl ValueSource {
14    pub(crate) fn is_explicit(self) -> bool {
15        self != Self::DefaultValue
16    }
17}
18