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#[allow(unused)]
use crate::Arg;
#[derive(Default, Copy, Clone, Debug, PartialEq, Eq)]
pub(crate) struct ArgFlags(u32);
impl ArgFlags {
pub(crate) fn set(&mut self, setting: ArgSettings) {
self.0 |= setting.bit();
}
pub(crate) fn unset(&mut self, setting: ArgSettings) {
self.0 &= !setting.bit();
}
pub(crate) fn is_set(&self, setting: ArgSettings) -> bool {
self.0 & setting.bit() != 0
}
pub(crate) fn insert(&mut self, other: Self) {
self.0 |= other.0;
}
}
impl std::ops::BitOr for ArgFlags {
type Output = Self;
fn bitor(mut self, rhs: Self) -> Self::Output {
self.insert(rhs);
self
}
}
/// Various settings that apply to arguments and may be set, unset, and checked via getter/setter
/// methods [`Arg::setting`], [`Arg::unset_setting`], and [`Arg::is_set`]. This is what the
/// [`Arg`] methods which accept a `bool` use internally.
///
/// [`Arg`]: crate::Arg
/// [`Arg::setting`]: crate::Arg::setting()
/// [`Arg::unset_setting`]: crate::Arg::unset_setting()
/// [`Arg::is_set`]: crate::Arg::is_set()
#[derive(Debug, PartialEq, Copy, Clone)]
#[repr(u8)]
pub(crate) enum ArgSettings {
Required,
Global,
Hidden,
NextLineHelp,
HidePossibleValues,
AllowHyphenValues,
AllowNegativeNumbers,
RequireEquals,
Last,
TrailingVarArg,
HideDefaultValue,
IgnoreCase,
#[cfg(feature = "env")]
HideEnv,
#[cfg(feature = "env")]
HideEnvValues,
HiddenShortHelp,
HiddenLongHelp,
Exclusive,
}
impl ArgSettings {
fn bit(self) -> u32 {
1 << (self as u8)
}
}
#[cfg(test)]
mod test {
use super::*;
use crate::Arg;
#[test]
fn setting() {
let m = Arg::new("setting").setting(ArgSettings::Required);
assert!(m.is_required_set());
}
#[test]
fn unset_setting() {
let m = Arg::new("unset_setting").setting(ArgSettings::Required);
assert!(m.is_required_set());
let m = m.unset_setting(ArgSettings::Required);
assert!(!m.is_required_set(), "{m:#?}");
}
}
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