1 files changed, 77 insertions, 0 deletions
diff --git a/intl/icu_capi/cpp/include/ICU4XList.hpp b/intl/icu_capi/cpp/include/ICU4XList.hpp
new file mode 100644
index 0000000000..e2212c021a
--- /dev/null
+++ b/intl/icu_capi/cpp/include/ICU4XList.hpp
@@ -0,0 +1,77 @@
+#ifndef ICU4XList_HPP
+#define ICU4XList_HPP
+#include <stdint.h>
+#include <stddef.h>
+#include <stdbool.h>
+#include <algorithm>
+#include <memory>
+#include <variant>
+#include <optional>
+#include "diplomat_runtime.hpp"
+
+#include "ICU4XList.h"
+
+class ICU4XList;
+
+/**
+ * A destruction policy for using ICU4XList with std::unique_ptr.
+ */
+struct ICU4XListDeleter {
+  void operator()(capi::ICU4XList* l) const noexcept {
+    capi::ICU4XList_destroy(l);
+  }
+};
+
+/**
+ * A list of strings
+ */
+class ICU4XList {
+ public:
+
+  /**
+   * Create a new list of strings
+   */
+  static ICU4XList create();
+
+  /**
+   * Create a new list of strings with preallocated space to hold
+   * at least `capacity` elements
+   */
+  static ICU4XList create_with_capacity(size_t capacity);
+
+  /**
+   * Push a string to the list
+   * 
+   * For C++ users, potentially invalid UTF8 will be handled via
+   * REPLACEMENT CHARACTERs
+   */
+  void push(const std::string_view val);
+
+  /**
+   * The number of elements in this list
+   */
+  size_t len() const;
+  inline const capi::ICU4XList* AsFFI() const { return this->inner.get(); }
+  inline capi::ICU4XList* AsFFIMut() { return this->inner.get(); }
+  inline ICU4XList(capi::ICU4XList* i) : inner(i) {}
+  ICU4XList() = default;
+  ICU4XList(ICU4XList&&) noexcept = default;
+  ICU4XList& operator=(ICU4XList&& other) noexcept = default;
+ private:
+  std::unique_ptr<capi::ICU4XList, ICU4XListDeleter> inner;
+};
+
+
+inline ICU4XList ICU4XList::create() {
+  return ICU4XList(capi::ICU4XList_create());
+}
+inline ICU4XList ICU4XList::create_with_capacity(size_t capacity) {
+  return ICU4XList(capi::ICU4XList_create_with_capacity(capacity));
+}
+inline void ICU4XList::push(const std::string_view val) {
+  capi::ICU4XList_push(this->inner.get(), val.data(), val.size());
+}
+inline size_t ICU4XList::len() const {
+  return capi::ICU4XList_len(this->inner.get());
+}
+#endif