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use crate::error::Error;
use core::{convert::TryFrom, fmt, str::FromStr};
#[cfg(feature = "serde")]
use serde::{de, ser, Deserialize, Serialize};
#[derive(Copy, Clone, Debug, Eq, Hash, PartialEq, PartialOrd, Ord)]
pub enum Tier {
One,
Two,
Three,
}
impl Tier {
pub fn to_usize(self) -> usize {
match self {
Tier::One => 1,
Tier::Two => 2,
Tier::Three => 3,
}
}
pub fn as_str(self) -> &'static str {
match self {
Tier::One => "tier1",
Tier::Two => "tier2",
Tier::Three => "tier3",
}
}
}
impl From<Tier> for usize {
fn from(tier: Tier) -> usize {
tier.to_usize()
}
}
impl TryFrom<usize> for Tier {
type Error = Error;
fn try_from(num: usize) -> Result<Tier, Error> {
match num {
1 => Ok(Tier::One),
2 => Ok(Tier::Two),
3 => Ok(Tier::Three),
_ => Err(Error),
}
}
}
impl FromStr for Tier {
type Err = Error;
fn from_str(s: &str) -> Result<Tier, Error> {
match s {
"tier1" => Ok(Tier::One),
"tier2" => Ok(Tier::Two),
"tier3" => Ok(Tier::Three),
_ => Err(Error),
}
}
}
impl fmt::Display for Tier {
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
f.write_str(self.as_str())
}
}
#[cfg(feature = "serde")]
impl Serialize for Tier {
fn serialize<S: ser::Serializer>(&self, serializer: S) -> Result<S::Ok, S::Error> {
serializer.serialize_str(self.as_str())
}
}
#[cfg(feature = "serde")]
impl<'de> Deserialize<'de> for Tier {
fn deserialize<D: de::Deserializer<'de>>(deserializer: D) -> Result<Self, D::Error> {
use de::Error;
<&str>::deserialize(deserializer)?
.parse()
.map_err(D::Error::custom)
}
}