//===----------------------------------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
// UNSUPPORTED: c++03, c++11, c++14, c++17
// UNSUPPORTED: no-filesystem, no-localization, no-tzdb
// XFAIL: libcpp-has-no-experimental-tzdb
// XFAIL: availability-tzdb-missing
// <chrono>
// template<class Duration, class TimeZonePtr = const time_zone*>
// class zoned_time;
// template<class Duration2, class TimeZonePtr2>
// zoned_time(string_view name, const zoned_time<Duration2, TimeZonePtr2>& y, choose c);
#include <chrono>
#include <concepts>
#include <cassert>
#include "../test_offset_time_zone.h"
namespace cr = std::chrono;
template <>
struct cr::zoned_traits<int> {
static int default_zone() { return 0; }
};
static void test_duration_conversion() {
using ptr = const cr::time_zone*;
ptr tz = cr::locate_zone("UTC");
// is_convertible_v<sys_time<Duration2>, sys_time<Duration>> is true.
{
using duration = cr::microseconds;
using time_point = cr::sys_time<duration>;
cr::zoned_time<duration, int> zt{time_point{duration{42}}};
using duration2 = cr::nanoseconds;
using time_point2 = cr::sys_time<duration2>;
static_assert(
std::
constructible_from<cr::zoned_time<duration2>, std::string_view, cr::zoned_time<duration, int>, cr::choose>);
cr::zoned_time<duration2> zt2{"UTC", zt, cr::choose::earliest};
assert(zt2.get_time_zone() == tz);
assert(zt2.get_sys_time() == time_point2{duration2{42'000}});
}
{
using duration = cr::milliseconds;
using time_point = cr::sys_time<duration>;
cr::zoned_time<duration, int> zt{time_point{duration{42}}};
using duration2 = cr::nanoseconds;
using time_point2 = cr::sys_time<duration2>;
static_assert(
std::
constructible_from<cr::zoned_time<duration2>, std::string_view, cr::zoned_time<duration, int>, cr::choose>);
cr::zoned_time<duration2> zt2{"UTC", zt, cr::choose::earliest};
assert(zt2.get_time_zone() == tz);
assert(zt2.get_sys_time() == time_point2{duration2{42'000'000}});
}
{
using duration = cr::seconds;
using time_point = cr::sys_time<duration>;
cr::zoned_time<duration, int> zt{time_point{duration{42}}};
using duration2 = cr::nanoseconds;
using time_point2 = cr::sys_time<duration2>;
static_assert(
std::
constructible_from<cr::zoned_time<duration2>, std::string_view, cr::zoned_time<duration, int>, cr::choose>);
cr::zoned_time<duration2> zt2{"UTC", zt, cr::choose::earliest};
assert(zt2.get_time_zone() == tz);
assert(zt2.get_sys_time() == time_point2{duration2{42'000'000'000}});
}
// is_convertible_v<sys_time<Duration2>, sys_time<Duration>> is false.
{
using duration = cr::milliseconds;
using duration2 = cr::seconds;
static_assert(
!std::
constructible_from<cr::zoned_time<duration2>, std::string_view, cr::zoned_time<duration, int>, cr::choose>);
}
{
using duration = cr::microseconds;
using duration2 = cr::seconds;
static_assert(
!std::
constructible_from<cr::zoned_time<duration2>, std::string_view, cr::zoned_time<duration, int>, cr::choose>);
}
{
using duration = cr::nanoseconds;
using duration2 = cr::seconds;
static_assert(
!std::
constructible_from<cr::zoned_time<duration2>, std::string_view, cr::zoned_time<duration, int>, cr::choose>);
}
}
static void test_locate_zone() {
using duration = cr::microseconds;
using time_point = cr::sys_time<duration>;
cr::zoned_time<duration, int> zt{time_point{duration{42}}};
using duration2 = cr::nanoseconds;
using time_point2 = cr::sys_time<duration2>;
{
using ptr = const cr::time_zone*;
static_assert(std::constructible_from<cr::zoned_time<duration2, ptr>,
std::string_view,
cr::zoned_time<duration, int>,
cr::choose>);
ptr tz = cr::locate_zone("UTC");
cr::zoned_time<duration2, ptr> zt2{"UTC", zt, cr::choose::earliest};
assert(zt2.get_time_zone() == tz);
assert(zt2.get_sys_time() == time_point2{duration2{42'000}});
}
{
using ptr = offset_time_zone<offset_time_zone_flags::none>;
static_assert(!std::constructible_from<cr::zoned_time<duration2, ptr>,
std::string_view,
cr::zoned_time<duration, int>,
cr::choose>);
}
{
using ptr = offset_time_zone<offset_time_zone_flags::has_default_zone>;
static_assert(!std::constructible_from<cr::zoned_time<duration2, ptr>,
std::string_view,
cr::zoned_time<duration, int>,
cr::choose>);
}
{
using ptr = offset_time_zone<offset_time_zone_flags::has_locate_zone>;
static_assert(std::constructible_from<cr::zoned_time<duration2, ptr>,
std::string_view,
cr::zoned_time<duration, int>,
cr::choose>);
ptr tz;
cr::zoned_time<duration2, ptr> zt2{"99", zt, cr::choose::earliest};
assert(zt2.get_time_zone().offset() == cr::seconds{99});
assert(zt2.get_sys_time() == time_point2{duration2{42'000}});
}
{
using ptr = offset_time_zone<offset_time_zone_flags::both>;
static_assert(std::constructible_from<cr::zoned_time<duration2, ptr>,
std::string_view,
cr::zoned_time<duration, int>,
cr::choose>);
ptr tz;
cr::zoned_time<duration2, ptr> zt2{"99", zt, cr::choose::earliest};
assert(zt2.get_time_zone().offset() == cr::seconds{99});
assert(zt2.get_sys_time() == time_point2{duration2{42'000}});
}
}
int main(int, char**) {
test_duration_conversion();
test_locate_zone();
return 0;
}