use std::fmt;
pub const INSTANCE_ID_MODULO: i32 = 1_000_000;
#[derive(Debug, Clone, Copy, PartialEq, Eq, Hash, PartialOrd, Ord)]
pub struct GlobalId {
    pub class_id: i32,
    pub instance_id: i32,
}
impl GlobalId {
    pub const fn new(class_id: i32, instance_id: i32) -> Self {
        Self {
            class_id,
            instance_id,
        }
    }
    pub const fn from_global(global_id: i32) -> Self {
        Self {
            class_id: global_id / INSTANCE_ID_MODULO,
            instance_id: global_id % INSTANCE_ID_MODULO,
        }
    }
    pub const fn to_global(self) -> i32 {
        self.class_id * INSTANCE_ID_MODULO + self.instance_id
    }
}
impl fmt::Display for GlobalId {
    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
        write!(f, "{}:{}", self.class_id, self.instance_id)
    }
}