66 lines
1.6 KiB
Rust
66 lines
1.6 KiB
Rust
use std::{
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cmp::{Ordering, PartialOrd},
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str::FromStr,
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};
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use crate::error::InvalidElementId;
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use crate::legacy::{ElementId, OpId};
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impl PartialOrd for ElementId {
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fn partial_cmp(&self, other: &Self) -> Option<Ordering> {
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Some(self.cmp(other))
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}
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}
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impl Ord for ElementId {
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fn cmp(&self, other: &Self) -> Ordering {
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match (self, other) {
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(ElementId::Id(a), ElementId::Id(b)) => a.cmp(b),
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(ElementId::Head, ElementId::Head) => Ordering::Equal,
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(ElementId::Head, _) => Ordering::Less,
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(_, ElementId::Head) => Ordering::Greater,
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}
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}
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}
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impl From<OpId> for ElementId {
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fn from(o: OpId) -> Self {
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ElementId::Id(o)
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}
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}
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impl From<&OpId> for ElementId {
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fn from(o: &OpId) -> Self {
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ElementId::Id(o.clone())
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}
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}
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impl FromStr for ElementId {
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type Err = InvalidElementId;
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fn from_str(s: &str) -> Result<Self, Self::Err> {
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match s {
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"_head" => Ok(ElementId::Head),
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id => Ok(ElementId::Id(
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OpId::from_str(id).map_err(|_| InvalidElementId(id.to_string()))?,
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)),
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}
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}
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}
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impl TryFrom<&str> for ElementId {
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type Error = InvalidElementId;
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fn try_from(value: &str) -> Result<Self, Self::Error> {
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ElementId::from_str(value)
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}
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}
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impl std::fmt::Display for ElementId {
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fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
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match self {
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ElementId::Head => write!(f, "_head"),
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ElementId::Id(id) => write!(f, "{}", id),
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}
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}
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}
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