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use std::error::Error;
use serde::Serialize;
use serde::Serializer;
use serde::Deserialize;
use serde::Deserializer;
use serde::de::Visitor;
use serde::de::Error as SerdeError;
use chrono::naive::datetime::NaiveDateTime;
#[derive(Clone, Debug, Hash, Eq, PartialEq)]
pub struct Date(NaiveDateTime);
impl From<NaiveDateTime> for Date {
fn from(ndt: NaiveDateTime) -> Date {
Date(ndt)
}
}
pub static TASKWARRIOR_DATETIME_TEMPLATE : &'static str = "%Y%m%dT%H%M%SZ";
impl Serialize for Date {
fn serialize<S>(&self, serializer: &mut S) -> Result<(), S::Error>
where S: Serializer
{
let formatted = self.0.format(TASKWARRIOR_DATETIME_TEMPLATE);
serializer.serialize_str(&format!("{}", formatted))
}
}
impl Deserialize for Date {
fn deserialize<D>(deserializer: &mut D) -> Result<Date, D::Error>
where D: Deserializer
{
struct DateVisitor;
impl Visitor for DateVisitor {
type Value = Date;
fn visit_str<E>(&mut self, value: &str) -> Result<Date, E>
where E: SerdeError
{
NaiveDateTime::parse_from_str(value, TASKWARRIOR_DATETIME_TEMPLATE)
.map(|d| Date(d))
.map_err(|e| SerdeError::custom(e.description()))
}
}
deserializer.deserialize(DateVisitor)
}
}
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