automerge/automerge/src/legacy/utility_impls/key.rs
2021-12-16 20:39:08 -05:00

49 lines
986 B
Rust

use std::cmp::{Ordering, PartialOrd};
use smol_str::SmolStr;
use crate::legacy::{ElementId, Key, OpId};
impl PartialOrd for Key {
fn partial_cmp(&self, other: &Self) -> Option<Ordering> {
Some(self.cmp(other))
}
}
impl Ord for Key {
fn cmp(&self, other: &Self) -> Ordering {
match (self, other) {
(Key::Map(a), Key::Map(b)) => a.cmp(b),
(Key::Seq(a), Key::Seq(b)) => a.cmp(b),
(Key::Map(_), _) => Ordering::Less,
(_, Key::Map(_)) => Ordering::Greater,
}
}
}
impl From<OpId> for Key {
fn from(id: OpId) -> Self {
Key::Seq(ElementId::Id(id))
}
}
impl From<&OpId> for Key {
fn from(id: &OpId) -> Self {
Key::Seq(ElementId::Id(id.clone()))
}
}
impl From<ElementId> for Key {
fn from(id: ElementId) -> Self {
Key::Seq(id)
}
}
impl<S> From<S> for Key
where
S: AsRef<str>,
{
fn from(s: S) -> Self {
Key::Map(SmolStr::new(s))
}
}