1 files changed, 34 insertions, 0 deletions
diff --git a/third_party/rust/fluent-bundle/src/concurrent.rs b/third_party/rust/fluent-bundle/src/concurrent.rs
new file mode 100644
index 0000000000..33a19e56d1
--- /dev/null
+++ b/third_party/rust/fluent-bundle/src/concurrent.rs
@@ -0,0 +1,34 @@
+use intl_memoizer::{concurrent::IntlLangMemoizer, Memoizable};
+use unic_langid::LanguageIdentifier;
+
+use crate::bundle::FluentBundleBase;
+use crate::memoizer::MemoizerKind;
+use crate::types::FluentType;
+
+/// Concurrent version of [`FluentBundle`] struct. See its docs for details.
+///
+/// [`FluentBundle`]: ../type.FluentBundle.html
+pub type FluentBundle<R> = FluentBundleBase<R, IntlLangMemoizer>;
+
+impl MemoizerKind for IntlLangMemoizer {
+    fn new(lang: LanguageIdentifier) -> Self
+    where
+        Self: Sized,
+    {
+        Self::new(lang)
+    }
+
+    fn with_try_get_threadsafe<I, R, U>(&self, args: I::Args, cb: U) -> Result<R, I::Error>
+    where
+        Self: Sized,
+        I: Memoizable + Send + Sync + 'static,
+        I::Args: Send + Sync + 'static,
+        U: FnOnce(&I) -> R,
+    {
+        self.with_try_get(args, cb)
+    }
+
+    fn stringify_value(&self, value: &dyn FluentType) -> std::borrow::Cow<'static, str> {
+        value.as_string_threadsafe(self)
+    }
+}