Move MapNode and SetNode to separate classes.

1 files changed, 66 insertions, 0 deletions

diff --git a/tdutils/td/utils/SetNode.h b/tdutils/td/utils/SetNode.h
new file mode 100644
index 000000000..8c54f2c1e
--- /dev/null
+++ b/tdutils/td/utils/SetNode.h
@@ -0,0 +1,66 @@
+//
+// Copyright Aliaksei Levin (levlam@telegram.org), Arseny Smirnov (arseny30@gmail.com) 2014-2022
+//
+// 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/utils/common.h"
+#include "td/utils/HashTableUtils.h"
+
+namespace td {
+
+template <class KeyT>
+struct SetNode {
+  using public_key_type = KeyT;
+  using public_type = KeyT;
+  using second_type = KeyT;  // TODO: remove second_type?
+
+  KeyT first{};
+
+  const KeyT &key() const {
+    return first;
+  }
+
+  KeyT &get_public() {
+    return first;
+  }
+
+  SetNode() = default;
+  explicit SetNode(KeyT key) : first(std::move(key)) {
+  }
+  SetNode(const SetNode &other) = delete;
+  SetNode &operator=(const SetNode &other) = delete;
+  SetNode(SetNode &&other) noexcept {
+    *this = std::move(other);
+  }
+  void operator=(SetNode &&other) noexcept {
+    DCHECK(empty());
+    DCHECK(!other.empty());
+    first = std::move(other.first);
+    other.first = KeyT{};
+  }
+  ~SetNode() = default;
+
+  void copy_from(const SetNode &other) {
+    DCHECK(empty());
+    DCHECK(!other.empty());
+    first = other.first;
+  }
+
+  bool empty() const {
+    return is_key_empty(first);
+  }
+
+  void clear() {
+    first = KeyT();
+    DCHECK(empty());
+  }
+
+  void emplace(KeyT key) {
+    first = std::move(key);
+  }
+};
+
+}  // namespace td