1 files changed, 39 insertions, 0 deletions
diff --git a/vendor/intl-memoizer/src/concurrent.rs b/vendor/intl-memoizer/src/concurrent.rs
new file mode 100644
index 000000000..95553281b
--- /dev/null
+++ b/vendor/intl-memoizer/src/concurrent.rs
@@ -0,0 +1,39 @@
+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))
+    }
+}