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use crate::{models::WarHistory, Eu4Date};
use serde::{
de::{self, Error},
Deserialize, Deserializer,
};
use std::fmt;
impl<'de> Deserialize<'de> for WarHistory {
fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>
where
D: Deserializer<'de>,
{
struct WarHistoryVisitor;
impl<'de> de::Visitor<'de> for WarHistoryVisitor {
type Value = WarHistory;
fn expecting(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
formatter.write_str("struct WarHistory with arbitrary fields")
}
fn visit_seq<A>(self, mut seq: A) -> Result<Self::Value, A::Error>
where
A: de::SeqAccess<'de>,
{
let abc = seq.next_element::<&str>()?;
if abc.is_some() {
return Err(de::Error::custom("unexpected sequence!"));
}
Ok(WarHistory::default())
}
fn visit_map<A>(self, mut map: A) -> Result<Self::Value, A::Error>
where
A: de::MapAccess<'de>,
{
let mut name = None;
let mut war_goal = None;
let mut succession = None;
let mut events = Vec::new();
while let Some(key) = map.next_key::<&str>()? {
match key {
"name" => name = map.next_value()?,
"war_goal" => war_goal = map.next_value()?,
"succession" => succession = map.next_value()?,
x => {
let date = Eu4Date::parse(x).map_err(A::Error::custom)?;
let event = map.next_value()?;
events.push((date, event));
}
}
}
Ok(WarHistory {
name,
war_goal,
succession,
events,
})
}
}
deserializer.deserialize_map(WarHistoryVisitor)
}
}