feat(Core/Common): add new helpers for time utility (#10207)

src/common/Utilities/Duration.h

@@ -1,6 +1,18 @@
 /*
- * Copyright (C) 2016+     AzerothCore <www.azerothcore.org>, released under GNU GPL v2 license, you may redistribute it and/or modify it under version 2 of the License, or (at your option), any later version.
- * Copyright (C) 2008-2020 TrinityCore <http://www.trinitycore.org/>
+ * This file is part of the AzerothCore Project. See AUTHORS file for Copyright information
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU Affero General Public License as published by the
+ * Free Software Foundation; either version 3 of the License, or (at your
+ * option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU Affero General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program. If not, see <http://www.gnu.org/licenses/>.
  */
 
 #ifndef _DURATION_H_
@@ -9,25 +21,71 @@
 #include <chrono>
 
 /// Microseconds shorthand typedef.
-typedef std::chrono::microseconds Microseconds;
+using Microseconds = std::chrono::microseconds;
 
 /// Milliseconds shorthand typedef.
-typedef std::chrono::milliseconds Milliseconds;
+using Milliseconds = std::chrono::milliseconds;
 
 /// Seconds shorthand typedef.
-typedef std::chrono::seconds Seconds;
+using Seconds = std::chrono::seconds;
 
 /// Minutes shorthand typedef.
-typedef std::chrono::minutes Minutes;
+using Minutes = std::chrono::minutes;
 
 /// Hours shorthand typedef.
-typedef std::chrono::hours Hours;
+using Hours = std::chrono::hours;
+
+#if __cplusplus > 201703L
+/// Days shorthand typedef.
+using Days = std::chrono::days;
+
+/// Weeks shorthand typedef.
+using Weeks = std::chrono::weeks;
+
+/// Years shorthand typedef.
+using Years = std::chrono::years;
+
+/// Months shorthand typedef.
+using Months = std::chrono::months;
+#else
+/// Days shorthand typedef. (delete after start support c++20)
+using Days = std::chrono::duration<int, std::ratio_multiply<std::ratio<24>, Hours::period>>;
+
+/// Weeks shorthand typedef. (delete after start support c++20)
+using Weeks = std::chrono::duration<int, std::ratio_multiply<std::ratio<7>, Days::period>>;
+
+/// Years shorthand typedef. (delete after start support c++20)
+using Years = std::chrono::duration<int, std::ratio_multiply<std::ratio<146097, 400>, Days::period>>;
+
+/// Months shorthand typedef. (delete after start support c++20)
+using Months = std::chrono::duration<int, std::ratio_divide<Years::period, std::ratio<12>>>;
+#endif
 
 /// time_point shorthand typedefs
-typedef std::chrono::steady_clock::time_point TimePoint;
-typedef std::chrono::system_clock::time_point SystemTimePoint;
+using TimePoint = std::chrono::steady_clock::time_point;
+using SystemTimePoint = std::chrono::system_clock::time_point;
 
 /// Makes std::chrono_literals globally available.
 using namespace std::chrono_literals;
 
+constexpr Days operator""_days(unsigned long long days)
+{
+    return Days(days);
+}
+
+constexpr Weeks operator""_weeks(unsigned long long weeks)
+{
+    return Weeks(weeks);
+}
+
+constexpr Years operator""_years(unsigned long long years)
+{
+    return Years(years);
+}
+
+constexpr Months operator""_months(unsigned long long months)
+{
+    return Months(months);
+}
+
 #endif