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use super::*;
use std::sync::Mutex;
#[derive(Debug)]
pub struct IntlLangMemoizer {
lang: LanguageIdentifier,
map: Mutex<type_map::concurrent::TypeMap>,
}
impl IntlLangMemoizer {
pub fn new(lang: LanguageIdentifier) -> Self {
Self {
lang,
map: Mutex::new(type_map::concurrent::TypeMap::new()),
}
}
pub fn with_try_get<I, R, U>(&self, args: I::Args, cb: U) -> Result<R, I::Error>
where
Self: Sized,
I: Memoizable + Sync + Send + 'static,
I::Args: Send + Sync + 'static,
U: FnOnce(&I) -> R,
{
let mut map = self.map.lock().unwrap();
let cache = map
.entry::<HashMap<I::Args, I>>()
.or_insert_with(HashMap::new);
let e = match cache.entry(args.clone()) {
Entry::Occupied(entry) => entry.into_mut(),
Entry::Vacant(entry) => {
let val = I::construct(self.lang.clone(), args)?;
entry.insert(val)
}
};
Ok(cb(&e))
}
}