bitflags-serde-legacy

use bitflags::bitflags;

bitflags! {
    // #[derive(Serialize, Deserialize)]
    struct Flags: u32 {
        const A = 0b00000001;
        const B = 0b00000010;
        const C = 0b00000100;
        const ABC = Self::A.bits() | Self::B.bits() | Self::C.bits();
    }
}

impl serde::Serialize for Flags {
    fn serialize<S: serde::Serializer>(&self, serializer: S) -> Result<S::Ok, S::Error> {
        bitflags_serde_legacy::serialize(self, "Flags", serializer)
    }
}

impl<'de> serde::Deserialize<'de> for Flags {
    fn deserialize<D: serde::Deserializer<'de>>(deserializer: D) -> Result<Self, D::Error> {
        bitflags_serde_legacy::deserialize("Flags", deserializer)
    }
}