// The MIT License (MIT) // // Copyright (c) 2015, 2016 Howard Hinnant // // Permission is hereby granted, free of charge, to any person obtaining a copy // of this software and associated documentation files (the "Software"), to deal // in the Software without restriction, including without limitation the rights // to use, copy, modify, merge, publish, distribute, sublicense, and/or sell // copies of the Software, and to permit persons to whom the Software is // furnished to do so, subject to the following conditions: // // The above copyright notice and this permission notice shall be included in all // copies or substantial portions of the Software. // // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, // FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE // AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER // LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, // OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE // SOFTWARE. // class weekday // { // unsigned char wd_; // public: // explicit constexpr weekday(unsigned wd) noexcept; // constexpr weekday(date::weekday wd) noexcept; // constexpr weekday(const sys_days& dp) noexcept; // // weekday& operator++() noexcept; // weekday operator++(int) noexcept; // weekday& operator--() noexcept; // weekday operator--(int) noexcept; // // weekday& operator+=(const days& d) noexcept; // weekday& operator-=(const days& d) noexcept; // // constexpr explicit operator unsigned() const noexcept; // constexpr operator date::weekday() const noexcept; // constexpr bool ok() const noexcept; // // // tested with weekday_indexed // constexpr weekday_indexed operator[](unsigned index) const noexcept; // // tested with weekday_last // constexpr weekday_last operator[](last_spec) const noexcept; // }; // constexpr bool operator==(const weekday& x, const weekday& y) noexcept; // constexpr bool operator!=(const weekday& x, const weekday& y) noexcept; // constexpr weekday operator+(const weekday& x, const days& y) noexcept; // constexpr weekday operator+(const days& x, const weekday& y) noexcept; // constexpr weekday operator-(const weekday& x, const days& y) noexcept; // constexpr days operator-(const weekday& x, const weekday& y) noexcept; // std::ostream& operator<<(std::ostream& os, const weekday& wd); // constexpr weekday sun{7}; // constexpr weekday mon{1}; // constexpr weekday tue{2}; // constexpr weekday wed{3}; // constexpr weekday thu{4}; // constexpr weekday fri{5}; // constexpr weekday sat{6}; #include "iso_week.h" #include "date.h" #include #include #include #include static_assert( std::is_trivially_destructible{}, ""); static_assert(!std::is_default_constructible{}, ""); static_assert( std::is_trivially_copy_constructible{}, ""); static_assert( std::is_trivially_copy_assignable{}, ""); static_assert( std::is_trivially_move_constructible{}, ""); static_assert( std::is_trivially_move_assignable{}, ""); static_assert(std::is_trivially_copyable{}, ""); static_assert(std::is_standard_layout{}, ""); static_assert(std::is_literal_type{}, ""); static_assert( std::is_nothrow_constructible{}, ""); static_assert( std::is_nothrow_constructible{}, ""); static_assert( std::is_nothrow_constructible{}, ""); static_assert( std::is_nothrow_constructible{}, ""); static_assert( std::is_nothrow_constructible{}, ""); static_assert(!std::is_convertible{}, ""); static_assert( std::is_convertible{}, ""); static_assert( std::is_convertible{}, ""); static_assert( std::is_convertible{}, ""); static_assert(!std::is_convertible{}, ""); static_assert(static_cast(iso_week::weekday{1u}) == 1, ""); static_assert(!iso_week::weekday{0u}.ok(), ""); static_assert( iso_week::weekday{1u}.ok(), ""); static_assert( iso_week::weekday{2u}.ok(), ""); static_assert( iso_week::weekday{3u}.ok(), ""); static_assert( iso_week::weekday{4u}.ok(), ""); static_assert( iso_week::weekday{5u}.ok(), ""); static_assert( iso_week::weekday{6u}.ok(), ""); static_assert( iso_week::weekday{7u}.ok(), ""); void test_weekday_arithmetic() { using namespace iso_week; constexpr unsigned a[7][7] = {// - Mon Tue Wed Thu Fri Sat Sun /*Mon*/ {0, 6, 5, 4, 3, 2, 1}, /*Tue*/ {1, 0, 6, 5, 4, 3, 2}, /*Wed*/ {2, 1, 0, 6, 5, 4, 3}, /*Thu*/ {3, 2, 1, 0, 6, 5, 4}, /*Fri*/ {4, 3, 2, 1, 0, 6, 5}, /*Sat*/ {5, 4, 3, 2, 1, 0, 6}, /*Sun*/ {6, 5, 4, 3, 2, 1, 0} }; for (unsigned x = 1; x <= 7; ++x) { for (unsigned y = 1; y <= 7; ++y) { assert(weekday{x} - weekday{y} == days{a[x-1][y-1]}); assert(weekday{x} - days{a[x-1][y-1]} == weekday{y}); assert(weekday{x} == weekday{y} + days{a[x-1][y-1]}); assert(weekday{x} == days{a[x-1][y-1]} + weekday{y}); } } for (unsigned x = 1; x <= 7; ++x) { for (int y = -21; y < 21; ++y) { weekday wx{x}; days dy{y}; wx += dy; weekday wz = weekday{x} + days{y}; assert(wx.ok()); assert(wz.ok()); assert(wx == wz); assert(wx - weekday{x} == days{y % 7 + (y % 7 < 0 ? 7 : 0)}); } } for (unsigned x = 1; x <= 7; ++x) { for (int y = -21; y < 21; ++y) { weekday wx{x}; days dy{y}; wx -= dy; assert(wx == weekday{x} + days{-y}); } } for (unsigned x = 1; x <= 7; ++x) { weekday wx{x}; assert(++wx - weekday{x} == days{1}); assert(wx++ - weekday{x} == days{1}); assert(wx - weekday{x} == days{2}); assert(wx-- - weekday{x} == days{2}); assert(wx - weekday{x} == days{1}); assert(--wx - weekday{x} == days{0}); } } void test_with_date_weekday() { auto constexpr d1 = iso_week::sun; static_assert(unsigned{d1} == 7, ""); auto constexpr d2 = date::weekday{d1}; static_assert(unsigned{d2} == 0, ""); auto constexpr d3 = iso_week::weekday{d2}; static_assert(unsigned{d3} == 7, ""); } int main() { using namespace iso_week; static_assert(sun == weekday{7u}, ""); static_assert(mon == weekday{1u}, ""); static_assert(tue == weekday{2u}, ""); static_assert(wed == weekday{3u}, ""); static_assert(thu == weekday{4u}, ""); static_assert(fri == weekday{5u}, ""); static_assert(sat == weekday{6u}, ""); static_assert(!(sun != sun), ""); static_assert( sun != mon, ""); static_assert( mon != sun, ""); test_weekday_arithmetic(); test_with_date_weekday(); std::ostringstream os; os << sun; assert(os.str() == "Sun"); os.str(""); os << mon; assert(os.str() == "Mon"); os.str(""); os << tue; assert(os.str() == "Tue"); os.str(""); os << wed; assert(os.str() == "Wed"); os.str(""); os << thu; assert(os.str() == "Thu"); os.str(""); os << fri; assert(os.str() == "Fri"); os.str(""); os << sat; assert(os.str() == "Sat"); }