6f2d8cc061
This implements the loading of the leap-seconds.list file and store its contents in the tzdb struct. This adds the required `leap_seconds` member. The class leap_seconds is fully implemented including its non-member functions. Implements parts of: - P0355 Extending <chrono> to Calendars and Time Zones - P1614 The Mothership has Landed Implements: - P1981 Rename leap to leap_second - LWG3359 <chrono> leap second support should allow for negative leap seconds - LWG3383 §[time.zone.leap.nonmembers] sys_seconds should be replaced with seconds
76 lines
4.5 KiB
C++
76 lines
4.5 KiB
C++
//===----------------------------------------------------------------------===//
|
|
//
|
|
// 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-incomplete-tzdb
|
|
// XFAIL: availability-tzdb-missing
|
|
|
|
// <chrono>
|
|
|
|
// Tests the loaded leap seconds match
|
|
// https://eel.is/c++draft/time.zone.leap.overview#2
|
|
//
|
|
// At the moment of writing that list is the actual list.
|
|
// If in the future more leap seconds are added, the returned list may have more
|
|
|
|
#include <algorithm>
|
|
#include <array>
|
|
#include <cassert>
|
|
#include <chrono>
|
|
#include <ranges>
|
|
|
|
using namespace std::literals::chrono_literals;
|
|
|
|
// The list of leap seconds matching
|
|
// https://eel.is/c++draft/time.zone.leap.overview#2
|
|
// At the moment of writing that list is the actual list in the IANA database.
|
|
// If in the future more leap seconds can be added.
|
|
static const std::array leap_seconds = {
|
|
std::make_pair(std::chrono::sys_seconds{std::chrono::sys_days{1972y / std::chrono::January / 1}}, 10s),
|
|
std::make_pair(std::chrono::sys_seconds{std::chrono::sys_days{1972y / std::chrono::July / 1}}, 11s),
|
|
std::make_pair(std::chrono::sys_seconds{std::chrono::sys_days{1973y / std::chrono::January / 1}}, 12s),
|
|
std::make_pair(std::chrono::sys_seconds{std::chrono::sys_days{1974y / std::chrono::January / 1}}, 13s),
|
|
std::make_pair(std::chrono::sys_seconds{std::chrono::sys_days{1975y / std::chrono::January / 1}}, 14s),
|
|
std::make_pair(std::chrono::sys_seconds{std::chrono::sys_days{1976y / std::chrono::January / 1}}, 15s),
|
|
std::make_pair(std::chrono::sys_seconds{std::chrono::sys_days{1977y / std::chrono::January / 1}}, 16s),
|
|
std::make_pair(std::chrono::sys_seconds{std::chrono::sys_days{1978y / std::chrono::January / 1}}, 17s),
|
|
std::make_pair(std::chrono::sys_seconds{std::chrono::sys_days{1979y / std::chrono::January / 1}}, 18s),
|
|
std::make_pair(std::chrono::sys_seconds{std::chrono::sys_days{1980y / std::chrono::January / 1}}, 19s),
|
|
std::make_pair(std::chrono::sys_seconds{std::chrono::sys_days{1981y / std::chrono::July / 1}}, 20s),
|
|
std::make_pair(std::chrono::sys_seconds{std::chrono::sys_days{1982y / std::chrono::July / 1}}, 21s),
|
|
std::make_pair(std::chrono::sys_seconds{std::chrono::sys_days{1983y / std::chrono::July / 1}}, 22s),
|
|
std::make_pair(std::chrono::sys_seconds{std::chrono::sys_days{1985y / std::chrono::July / 1}}, 23s),
|
|
std::make_pair(std::chrono::sys_seconds{std::chrono::sys_days{1988y / std::chrono::January / 1}}, 24s),
|
|
std::make_pair(std::chrono::sys_seconds{std::chrono::sys_days{1990y / std::chrono::January / 1}}, 25s),
|
|
std::make_pair(std::chrono::sys_seconds{std::chrono::sys_days{1991y / std::chrono::January / 1}}, 26s),
|
|
std::make_pair(std::chrono::sys_seconds{std::chrono::sys_days{1992y / std::chrono::July / 1}}, 27s),
|
|
std::make_pair(std::chrono::sys_seconds{std::chrono::sys_days{1993y / std::chrono::July / 1}}, 28s),
|
|
std::make_pair(std::chrono::sys_seconds{std::chrono::sys_days{1994y / std::chrono::July / 1}}, 29s),
|
|
std::make_pair(std::chrono::sys_seconds{std::chrono::sys_days{1996y / std::chrono::January / 1}}, 30s),
|
|
std::make_pair(std::chrono::sys_seconds{std::chrono::sys_days{1997y / std::chrono::July / 1}}, 31s),
|
|
std::make_pair(std::chrono::sys_seconds{std::chrono::sys_days{1999y / std::chrono::January / 1}}, 32s),
|
|
std::make_pair(std::chrono::sys_seconds{std::chrono::sys_days{2006y / std::chrono::January / 1}}, 33s),
|
|
std::make_pair(std::chrono::sys_seconds{std::chrono::sys_days{2009y / std::chrono::January / 1}}, 34s),
|
|
std::make_pair(std::chrono::sys_seconds{std::chrono::sys_days{2012y / std::chrono::July / 1}}, 35s),
|
|
std::make_pair(std::chrono::sys_seconds{std::chrono::sys_days{2015y / std::chrono::July / 1}}, 36s),
|
|
std::make_pair(std::chrono::sys_seconds{std::chrono::sys_days{2017y / std::chrono::January / 1}}, 37s)};
|
|
|
|
int main(int, const char**) {
|
|
const std::chrono::tzdb& tzdb = std::chrono::get_tzdb();
|
|
|
|
assert(tzdb.leap_seconds.size() >= leap_seconds.size());
|
|
assert((std::ranges::equal(
|
|
leap_seconds,
|
|
tzdb.leap_seconds | std::ranges::views::take(leap_seconds.size()),
|
|
[](const auto& lhs, const auto& rhs) { return lhs.first == rhs.date() && lhs.second == rhs.value(); })));
|
|
|
|
return 0;
|
|
}
|