1 files changed, 57 insertions, 0 deletions
diff --git a/libs/tdlib/td/td/telegram/CallId.h b/libs/tdlib/td/td/telegram/CallId.h
new file mode 100644
index 0000000000..227e2240d9
--- /dev/null
+++ b/libs/tdlib/td/td/telegram/CallId.h
@@ -0,0 +1,57 @@
+//
+// Copyright Aliaksei Levin (levlam@telegram.org), Arseny Smirnov (arseny30@gmail.com) 2014-2018
+//
+// Distributed under the Boost Software License, Version 1.0. (See accompanying
+// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+//
+#pragma once
+
+#include "td/telegram/td_api.h"
+
+#include "td/utils/common.h"
+#include "td/utils/StringBuilder.h"
+
+#include <functional>
+#include <type_traits>
+
+namespace td {
+class CallId {
+ public:
+  CallId() = default;
+
+  explicit CallId(int32 call_id) : id(call_id) {
+  }
+
+  template <class T, typename = std::enable_if_t<std::is_convertible<T, int32>::value>>
+  CallId(T call_id) = delete;
+
+  bool is_valid() const {
+    return id != 0;
+  }
+
+  int32 get() const {
+    return id;
+  }
+
+  auto as_td_api() const {
+    return make_tl_object<td_api::callId>(id);
+  }
+
+  bool operator==(const CallId &other) const {
+    return id == other.id;
+  }
+
+ private:
+  int32 id{0};
+};
+
+struct CallIdHash {
+  std::size_t operator()(CallId call_id) const {
+    return std::hash<int32>()(call_id.get());
+  }
+};
+
+inline StringBuilder &operator<<(StringBuilder &sb, const CallId call_id) {
+  return sb << "CallId(" << call_id.get() << ")";
+}
+}  // namespace td