viks 1.0.5

vim-like key crate
Documentation 
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#[derive(Clone, Copy, PartialEq, Eq, PartialOrd, Ord, Hash)]
pub(crate) struct KeyModifiers(pub(crate) KeyModifier);

impl KeyModifiers {
    pub(crate) fn is_shift(&self) -> bool {
        self.0 & KeyModifier::Shift == KeyModifier::Shift
    }

    pub(crate) fn is_ctrl(&self) -> bool {
        self.0 & KeyModifier::Control == KeyModifier::Control
    }

    pub(crate) fn is_alt(&self) -> bool {
        self.0 & KeyModifier::Alt == KeyModifier::Alt
    }
}

#[repr(u8)]
#[derive(Clone, Copy, Hash, PartialEq, Eq, PartialOrd, Ord)]
pub(crate) enum KeyModifier {
    Shift = 0b0001,
    Control = 0b0010,
    Alt = 0b0100,
    None = 0b0000,
}

impl std::ops::BitAnd for KeyModifier {
    type Output = KeyModifier;

    fn bitand(self, rhs: Self) -> Self::Output {
        unsafe { std::mem::transmute(self as u8 & rhs as u8) }
    }
}

impl std::ops::BitOr for KeyModifier {
    type Output = KeyModifier;

    fn bitor(self, rhs: Self) -> Self::Output {
        unsafe { std::mem::transmute(self as u8 | rhs as u8) }
    }
}