1 files changed, 43 insertions, 0 deletions
diff --git a/intl/icu_capi/cpp/include/ICU4XLocaleFallbackConfig.hpp b/intl/icu_capi/cpp/include/ICU4XLocaleFallbackConfig.hpp
new file mode 100644
index 0000000000..8c177d718a
--- /dev/null
+++ b/intl/icu_capi/cpp/include/ICU4XLocaleFallbackConfig.hpp
@@ -0,0 +1,43 @@
+#ifndef ICU4XLocaleFallbackConfig_HPP
+#define ICU4XLocaleFallbackConfig_HPP
+#include <stdint.h>
+#include <stddef.h>
+#include <stdbool.h>
+#include <algorithm>
+#include <memory>
+#include <variant>
+#include <optional>
+#include "diplomat_runtime.hpp"
+
+#include "ICU4XLocaleFallbackConfig.h"
+
+#include "ICU4XLocaleFallbackPriority.hpp"
+#include "ICU4XLocaleFallbackSupplement.hpp"
+
+
+/**
+ * Collection of configurations for the ICU4X fallback algorithm.
+ * 
+ * See the [Rust documentation for `LocaleFallbackConfig`](https://docs.rs/icu/latest/icu/locid_transform/fallback/struct.LocaleFallbackConfig.html) for more information.
+ */
+struct ICU4XLocaleFallbackConfig {
+ public:
+
+  /**
+   * Choice of priority mode.
+   */
+  ICU4XLocaleFallbackPriority priority;
+
+  /**
+   * An empty string is considered `None`.
+   */
+  std::string_view extension_key;
+
+  /**
+   * Fallback supplement data key to customize fallback rules.
+   */
+  ICU4XLocaleFallbackSupplement fallback_supplement;
+};
+
+
+#endif