use std::{
fmt::{Debug, Display},
hash::Hash,
};
use intmap::IntKey;
#[derive(Clone, Copy)]
pub struct Attribute {
pub(crate) id: usize,
}
impl PartialEq for Attribute {
fn eq(&self, other: &Self) -> bool {
self.id == other.id
}
}
impl PartialEq<usize> for Attribute {
fn eq(&self, other: &usize) -> bool {
&self.id == other
}
}
impl Eq for Attribute {}
impl Hash for Attribute {
fn hash<H: std::hash::Hasher>(&self, state: &mut H) {
self.id.hash(state);
}
}
impl Display for Attribute {
fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
write!(f, "at{}", self.id)
}
}
impl Debug for Attribute {
fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
write!(f, "at{}", self.id)
}
}
impl PartialOrd for Attribute {
fn partial_cmp(&self, other: &Self) -> Option<std::cmp::Ordering> {
self.id.partial_cmp(&other.id)
}
}
impl PartialOrd<usize> for Attribute {
fn partial_cmp(&self, other: &usize) -> Option<std::cmp::Ordering> {
self.id.partial_cmp(other)
}
}
impl IntKey for Attribute {
type Int = usize;
const PRIME: Self::Int = usize::PRIME;
fn into_int(self) -> Self::Int {
self.id
}
}