use std::fmt;
use serde::{de, Deserialize, ser, Serialize};
#[derive(Debug, Clone, Copy, PartialEq)]
pub enum OxygenDeliverySystemCode {
NasalCannula,
OxygenConservingDevice,
OxygenConservingDeviceWithOxygenPulseSystem,
OxygenConservingDeviceWithReservoirSystem,
TranstrachealCatheter,
}
impl OxygenDeliverySystemCode {
pub fn code(&self) -> &str {
{
use OxygenDeliverySystemCode::*;
match self {
NasalCannula => "A",
OxygenConservingDevice => "B",
OxygenConservingDeviceWithOxygenPulseSystem => "C",
OxygenConservingDeviceWithReservoirSystem => "D",
TranstrachealCatheter => "E",
}
}
}
pub fn from_code(code: &[u8]) -> Option<OxygenDeliverySystemCode> {
use OxygenDeliverySystemCode::*;
match code {
b"A" => Some(NasalCannula),
b"B" => Some(OxygenConservingDevice),
b"C" => Some(OxygenConservingDeviceWithOxygenPulseSystem),
b"D" => Some(OxygenConservingDeviceWithReservoirSystem),
b"E" => Some(TranstrachealCatheter),
_ => None,
}
}
fn description(&self) -> &str {
use OxygenDeliverySystemCode::*;
match self {
NasalCannula => "Nasal Cannula",
OxygenConservingDevice => "Oxygen Conserving Device",
OxygenConservingDeviceWithOxygenPulseSystem => {
"Oxygen Conserving Device with Oxygen Pulse System"
}
OxygenConservingDeviceWithReservoirSystem => {
"Oxygen Conserving Device with Reservoir System"
}
TranstrachealCatheter => "Transtracheal Catheter",
}
}
fn from_description(description: &str) -> Option<OxygenDeliverySystemCode> {
{
use OxygenDeliverySystemCode::*;
match description {
"Nasal Cannula" => Some(NasalCannula),
"Oxygen Conserving Device" => Some(OxygenConservingDevice),
"Oxygen Conserving Device with Oxygen Pulse System" => {
Some(OxygenConservingDeviceWithOxygenPulseSystem)
}
"Oxygen Conserving Device with Reservoir System" => {
Some(OxygenConservingDeviceWithReservoirSystem)
}
"Transtracheal Catheter" => Some(TranstrachealCatheter),
_ => None,
}
}
}
}
impl Serialize for OxygenDeliverySystemCode {
fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
where
S: ser::Serializer,
{
let value = if serializer.is_human_readable() {
self.description()
} else {
self.code()
};
serializer.serialize_str(value)
}
}
struct Visitor;
impl<'de> de::Visitor<'de> for Visitor {
type Value = OxygenDeliverySystemCode;
fn expecting(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
formatter.write_str("Oxygen Delivery System Code")
}
fn visit_str<E>(self, v: &str) -> Result<Self::Value, E>
where
E: de::Error,
{
OxygenDeliverySystemCode::from_description(v)
.ok_or_else(|| E::custom(
format!("Invalid Oxygen Delivery System Code: {}", v),
))
}
fn visit_bytes<E>(self, v: &[u8]) -> Result<Self::Value, E>
where
E: de::Error,
{
OxygenDeliverySystemCode::from_code(v)
.ok_or_else(|| E::custom(
format!(
"Invalid Oxygen Delivery System Code: {}", std::str::from_utf8(v)
.unwrap()
),
))
}
}
impl<'de> Deserialize<'de> for OxygenDeliverySystemCode {
fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>
where
D: de::Deserializer<'de>,
{
if deserializer.is_human_readable() {
deserializer.deserialize_str(Visitor)
} else {
deserializer.deserialize_bytes(Visitor)
}
}
}