247 lines
7.9 KiB
C++
247 lines
7.9 KiB
C++
// The MIT License (MIT)
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//
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// Copyright (c) 2019 Tomasz Kamiński
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//
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// Permission is hereby granted, free of charge, to any person obtaining a copy
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// of this software and associated documentation files (the "Software"), to deal
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// in the Software without restriction, including without limitation the rights
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// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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// copies of the Software, and to permit persons to whom the Software is
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// furnished to do so, subject to the following conditions:
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//
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// The above copyright notice and this permission notice shall be included in all
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// copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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// SOFTWARE.
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#include "tz.h"
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#include "OffsetZone.h"
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#include <cassert>
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#include <type_traits>
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#include <string>
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#if HAS_DEDUCTION_GUIDES
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#include <string_view>
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template<typename TimeZonePtr, typename Source>
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void testDeductionFrom(Source&& s)
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{
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using namespace date;
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using namespace std::chrono;
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// No time point
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{
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zoned_time zt(std::forward<Source>(s));
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static_assert(std::is_same<decltype(zt), zoned_time<seconds, TimeZonePtr>>::value, "");
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}
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// sys_time
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{
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sys_days sd(2017_y/feb/20);
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zoned_time ztd(std::forward<Source>(s), sd);
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static_assert(std::is_same<decltype(ztd), zoned_time<seconds, TimeZonePtr>>::value, "");
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sys_time<seconds> ss(sd);
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zoned_time zts(std::forward<Source>(s), ss);
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static_assert(std::is_same<decltype(zts), zoned_time<seconds, TimeZonePtr>>::value, "");
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sys_time<milliseconds> sms(ss);
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zoned_time ztms(std::forward<Source>(s), sms);
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static_assert(std::is_same<decltype(ztms), zoned_time<milliseconds, TimeZonePtr>>::value, "");
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}
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// local_time
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{
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local_days ld(2017_y/feb/20);
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zoned_time ztd(std::forward<Source>(s), ld);
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static_assert(std::is_same<decltype(ztd), zoned_time<seconds, TimeZonePtr>>::value, "");
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local_time<seconds> ls(ld);
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zoned_time zts(std::forward<Source>(s), ls);
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static_assert(std::is_same<decltype(zts), zoned_time<seconds, TimeZonePtr>>::value, "");
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local_time<milliseconds> lms(ls);
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zoned_time ztms(std::forward<Source>(s), lms);
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static_assert(std::is_same<decltype(ztms), zoned_time<milliseconds, TimeZonePtr>>::value, "");
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}
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// local_time, choose
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{
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local_days ld(2017_y/feb/20);
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zoned_time ztd(std::forward<Source>(s), ld, choose::earliest);
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static_assert(std::is_same<decltype(ztd), zoned_time<seconds, TimeZonePtr>>::value, "");
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local_time<seconds> ls(ld);
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zoned_time zts(std::forward<Source>(s), ls, choose::earliest);
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static_assert(std::is_same<decltype(zts), zoned_time<seconds, TimeZonePtr>>::value, "");
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local_time<milliseconds> lms(ls);
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zoned_time ztms(std::forward<Source>(s), lms, choose::earliest);
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static_assert(std::is_same<decltype(ztms), zoned_time<milliseconds, TimeZonePtr>>::value, "");
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}
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// zoned_time
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{
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zoned_time<days> zd(sys_days(2017_y/feb/20));
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zoned_time ztd(std::forward<Source>(s), zd);
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static_assert(std::is_same<decltype(ztd), zoned_time<seconds, TimeZonePtr>>::value, "");
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zoned_time<seconds> zs(zd);
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zoned_time zts(std::forward<Source>(s), zs);
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static_assert(std::is_same<decltype(zts), zoned_time<seconds, TimeZonePtr>>::value, "");
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zoned_time<milliseconds> zms(zs);
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zoned_time ztms(std::forward<Source>(s), zms);
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static_assert(std::is_same<decltype(ztms), zoned_time<milliseconds, TimeZonePtr>>::value, "");
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}
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// zoned_time, choose
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{
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zoned_time<days> zd(sys_days(2017_y/feb/20));
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zoned_time ztd(std::forward<Source>(s), zd, choose::earliest);
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static_assert(std::is_same<decltype(ztd), zoned_time<seconds, TimeZonePtr>>::value, "");
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zoned_time<seconds> zs(zd);
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zoned_time zts(std::forward<Source>(s), zs, choose::earliest);
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static_assert(std::is_same<decltype(zts), zoned_time<seconds, TimeZonePtr>>::value, "");
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zoned_time<milliseconds> zms(zs);
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zoned_time ztms(std::forward<Source>(s), zms, choose::earliest);
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static_assert(std::is_same<decltype(ztms), zoned_time<milliseconds, TimeZonePtr>>::value, "");
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}
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}
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struct MyString
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{
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MyString(std::string s) : ms(std::move(s)) {}
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operator std::string_view() const { return ms; }
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private:
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std::string ms;
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};
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struct OnlyLValueString
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{
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OnlyLValueString(std::string s) : ms(std::move(s)) {}
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operator std::string_view() & { return ms; }
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private:
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std::string ms;
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};
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#endif // HAS_DEDUCTION_GUIDES
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template<typename T>
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T const& to_const(T& t) { return t; }
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int
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main()
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{
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using namespace date;
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using namespace std::chrono;
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#if HAS_DEDUCTION_GUIDES
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// no arguments
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{
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zoned_time zt{};
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static_assert(std::is_same<decltype(zt), zoned_time<seconds>>::value, "");
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}
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// zoned_time
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{
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zoned_time<days> zd(sys_days(2017_y/feb/20));
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zoned_time ztd(zd);
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static_assert(std::is_same<decltype(ztd), zoned_time<days>>::value, "");
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zoned_time<seconds> zs(zd);
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zoned_time zts(zs);
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static_assert(std::is_same<decltype(zts), zoned_time<seconds>>::value, "");
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zoned_time<milliseconds> zms(zs);
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zoned_time ztms(zms);
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static_assert(std::is_same<decltype(ztms), zoned_time<milliseconds>>::value, "");
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}
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// sys_time
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{
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sys_days sd(2017_y/feb/20);
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zoned_time ztd(sd);
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static_assert(std::is_same<decltype(ztd), zoned_time<seconds>>::value, "");
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sys_time<seconds> ss(sd);
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zoned_time zts(ss);
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static_assert(std::is_same<decltype(zts), zoned_time<seconds>>::value, "");
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sys_time<milliseconds> sms(ss);
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zoned_time ztms(sms);
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static_assert(std::is_same<decltype(ztms), zoned_time<milliseconds>>::value, "");
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}
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// time_zone const*
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{
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time_zone const* tz = current_zone();
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testDeductionFrom<time_zone const*>(tz);
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testDeductionFrom<time_zone const*>(to_const(tz));
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testDeductionFrom<time_zone const*>(std::move(tz));
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}
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// char const*
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{
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char const* tz = "Europe/Warsaw";
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testDeductionFrom<time_zone const*>(tz);
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testDeductionFrom<time_zone const*>(to_const(tz));
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testDeductionFrom<time_zone const*>(std::move(tz));
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}
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// std::string
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{
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std::string tz = "Europe/Warsaw";
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testDeductionFrom<time_zone const*>(tz);
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testDeductionFrom<time_zone const*>(to_const(tz));
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testDeductionFrom<time_zone const*>(std::move(tz));
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}
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// std::string_view
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{
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std::string_view tz = "Europe/Warsaw";
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testDeductionFrom<time_zone const*>(tz);
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testDeductionFrom<time_zone const*>(to_const(tz));
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testDeductionFrom<time_zone const*>(std::move(tz));
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}
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// MyString
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{
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MyString tz("Europe/Warsaw");
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testDeductionFrom<time_zone const*>(tz);
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testDeductionFrom<time_zone const*>(to_const(tz));
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testDeductionFrom<time_zone const*>(std::move(tz));
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}
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// custom time zone
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{
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OffsetZone tz(minutes(45));
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testDeductionFrom<OffsetZone>(tz);
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testDeductionFrom<OffsetZone>(to_const(tz));
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testDeductionFrom<OffsetZone>(std::move(tz));
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}
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// OnlyLValue
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{
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OnlyLValueString tz("Europe/Warsaw");
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testDeductionFrom<time_zone const*>(tz);
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//testDeductionFrom<time_zone const*>(to_const(tz));
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//testDeductionFrom<time_zone const*>(std::move(tz));
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}
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#endif // HAS_DEDUCTION_GUIDES
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}
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