+++ /dev/null
-//===----------------------------------------------------------------------===//
-// 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: libcpp-has-no-incomplete-format
-
-// <format>
-
-// template <class _Tp, class _CharT = char>
-// struct formatter;
-
-// Tests the enabled and disabled requirements for std::formatter.
-
-#include <array>
-#include <bitset>
-#include <bitset>
-#include <chrono>
-#include <complex>
-#include <concepts>
-#include <deque>
-#include <format>
-#include <forward_list>
-#include <list>
-#include <memory>
-#include <map>
-#include <optional>
-#include <queue>
-#include <set>
-#include <stack>
-#include <span>
-#include <tuple>
-#include <type_traits>
-#include <unordered_map>
-#include <unordered_set>
-#include <valarray>
-#include <variant>
-
-#include "test_macros.h"
-
-#ifndef TEST_HAS_NO_FILESYSTEM_LIBRARY
-# include <filesystem>
-#endif
-#ifndef TEST_HAS_NO_LOCALIZATION
-# include <regex>
-#endif
-#ifndef TEST_HAS_NO_THREADS
-# include <thread>
-#endif
-
-// Validate default template argument.
-static_assert(std::same_as<std::formatter<int>, std::formatter<int, char>>);
-
-// Concept for an enabled formatter.
-//
-// Since it's not possible to extract the T and CharT types from the formatter
-// they are specified and the proper formatter is always intended to be
-// defaulted.
-//
-// [formatter.requirements]/2
-// A type F meets the Formatter requirements if it meets the BasicFormatter
-// requirements and the expressions shown in Table 71 are valid and have the
-// indicated semantics.
-template <class T, class CharT, class F = std::formatter<T, CharT>>
-concept enabled =
- // The basic BasicFormatter requirements:
- std::default_initializable<F> && std::copyable<F> && std::destructible<F> && std::swappable<F> &&
- // The expressions shown in Table 71
- requires(F f, std::basic_format_parse_context<CharT> pc, T u, std::basic_format_context<CharT*, CharT> fc) {
- { f.parse(pc) } -> std::same_as<typename decltype(pc)::iterator>;
- { f.format(u, fc) } -> std::same_as<typename decltype(fc)::iterator>;
-};
-
-// Concept for a disabled formatter.
-//
-// This uses the same template arguments as enable. This isn't required since
-// the concept doesn't need to inspect T and CharT. This makes it easier for
-// future changes. For example P2286 formatting ranges intents to change
-// std::formatter<std::vector<int>> from disabled to enabled. The current way
-// makes it easy to define a macro like
-// #if TEST_STD_VER > 23
-// TEST_ENABLED_AFTER_CXX23(T, CharT) enabled<T, CharT>
-// #else
-// TEST_ENABLED_AFTER_CXX23(T, CharT) disabled<T, CharT>
-// #endif
-template <class T, class CharT, class F = std::formatter<T, CharT>>
-// [formatter.requirements]/5
-// If F is a disabled specialization of formatter, these values are false:
-concept disabled = !std::is_default_constructible_v<F> && !std::is_copy_constructible_v<F> &&
- !std::is_move_constructible_v<F> && !std::is_copy_assignable_v<F> && !std::is_move_assignable_v<F>;
-
-template <class T, class CharT>
-void assert_formatter_is_disabled() {
- static_assert(disabled<T, CharT>);
-}
-
-template <class T, class CharT>
-void assert_formatter_is_enabled() {
- // Only formatters for CharT == char || CharT == wchar_t are enabled for the
- // standard formatters. When CharT is a different type the formatter should
- // be disabled.
- if constexpr (std::same_as<CharT, char>
-#ifndef TEST_HAS_NO_WIDE_CHARACTERS
- || std::same_as<CharT, wchar_t>
-#endif
- )
- static_assert(enabled<T, CharT>);
- else
- assert_formatter_is_disabled<T, CharT>();
-}
-
-// Tests for P0645 Text Formatting
-template <class CharT>
-void test_P0645() {
-#ifndef TEST_HAS_NO_WIDE_CHARACTERS
- // Tests the special formatter that converts a char to a wchar_t.
- assert_formatter_is_enabled<char, wchar_t>();
-#endif
- assert_formatter_is_enabled<CharT, CharT>();
-
- assert_formatter_is_enabled<CharT*, CharT>();
- assert_formatter_is_enabled<const CharT*, CharT>();
- assert_formatter_is_enabled<CharT[42], CharT>();
- assert_formatter_is_enabled<const CharT[42], CharT>();
- assert_formatter_is_enabled<std::basic_string<CharT>, CharT>();
- assert_formatter_is_enabled<std::basic_string_view<CharT>, CharT>();
-
- assert_formatter_is_enabled<bool, CharT>();
-
- assert_formatter_is_enabled<signed char, CharT>();
- assert_formatter_is_enabled<signed short, CharT>();
- assert_formatter_is_enabled<signed int, CharT>();
- assert_formatter_is_enabled<signed long, CharT>();
- assert_formatter_is_enabled<signed long long, CharT>();
-#ifndef TEST_HAS_NO_INT128
- assert_formatter_is_enabled<__int128_t, CharT>();
-#endif
-
- assert_formatter_is_enabled<unsigned char, CharT>();
- assert_formatter_is_enabled<unsigned short, CharT>();
- assert_formatter_is_enabled<unsigned int, CharT>();
- assert_formatter_is_enabled<unsigned long, CharT>();
- assert_formatter_is_enabled<unsigned long long, CharT>();
-#ifndef TEST_HAS_NO_INT128
- assert_formatter_is_enabled<__uint128_t, CharT>();
-#endif
-
- assert_formatter_is_enabled<float, CharT>();
- assert_formatter_is_enabled<double, CharT>();
- assert_formatter_is_enabled<long double, CharT>();
-
- assert_formatter_is_enabled<std::nullptr_t, CharT>();
- assert_formatter_is_enabled<void*, CharT>();
- assert_formatter_is_enabled<const void*, CharT>();
-}
-
-// Tests for P1361 Integration of chrono with text formatting
-//
-// Some tests are commented out since these types haven't been implemented in
-// chrono yet. After P1361 has been implemented these formatters should be all
-// enabled.
-template <class CharT>
-void test_P1361() {
-// The chrono formatters require localization support.
-// [time.format]/7
-// If the chrono-specs is omitted, the chrono object is formatted as if by
-// streaming it to std::ostringstream os with the formatting
-// locale imbued and copying os.str() through the output iterator of the
-// context with additional padding and adjustments as specified by the format
-// specifiers.
-// In libc++ std:::ostringstream requires localization support.
-#ifndef TEST_HAS_NO_LOCALIZATION
-
- assert_formatter_is_disabled<std::chrono::microseconds, CharT>();
-
- assert_formatter_is_disabled<std::chrono::sys_time<std::chrono::microseconds>, CharT>();
- //assert_formatter_is_enabled<std::chrono::utc_time<std::chrono::microseconds>, CharT>();
- //assert_formatter_is_enabled<std::chrono::tai_time<std::chrono::microseconds>, CharT>();
- //assert_formatter_is_enabled<std::chrono::gps_time<std::chrono::microseconds>, CharT>();
- assert_formatter_is_disabled<std::chrono::file_time<std::chrono::microseconds>, CharT>();
- assert_formatter_is_disabled<std::chrono::local_time<std::chrono::microseconds>, CharT>();
-
- assert_formatter_is_enabled<std::chrono::day, CharT>();
- assert_formatter_is_enabled<std::chrono::month, CharT>();
- assert_formatter_is_enabled<std::chrono::year, CharT>();
-
- assert_formatter_is_disabled<std::chrono::weekday, CharT>();
- assert_formatter_is_disabled<std::chrono::weekday_indexed, CharT>();
- assert_formatter_is_disabled<std::chrono::weekday_last, CharT>();
-
- assert_formatter_is_disabled<std::chrono::month_day, CharT>();
- assert_formatter_is_disabled<std::chrono::month_day_last, CharT>();
- assert_formatter_is_disabled<std::chrono::month_weekday, CharT>();
- assert_formatter_is_disabled<std::chrono::month_weekday_last, CharT>();
-
- assert_formatter_is_disabled<std::chrono::year_month, CharT>();
- assert_formatter_is_disabled<std::chrono::year_month_day, CharT>();
- assert_formatter_is_disabled<std::chrono::year_month_day_last, CharT>();
- assert_formatter_is_disabled<std::chrono::year_month_weekday, CharT>();
- assert_formatter_is_disabled<std::chrono::year_month_weekday_last, CharT>();
-
- assert_formatter_is_disabled<std::chrono::hh_mm_ss<std::chrono::microseconds>, CharT>();
-
- //assert_formatter_is_enabled<std::chrono::sys_info, CharT>();
- //assert_formatter_is_enabled<std::chrono::local_info, CharT>();
-
- //assert_formatter_is_enabled<std::chrono::zoned_time, CharT>();
-
-#endif // TEST_HAS_NO_LOCALIZATION
-}
-
-// Tests for P1636 Formatters for library types
-//
-// The paper hasn't been voted in so currently all formatters are disabled.
-// TODO validate whether the test is correct after the paper has been accepted.
-template <class CharT>
-void test_P1636() {
- assert_formatter_is_disabled<std::basic_streambuf<CharT>, CharT>();
- assert_formatter_is_disabled<std::bitset<42>, CharT>();
- assert_formatter_is_disabled<std::complex<double>, CharT>();
- assert_formatter_is_disabled<std::error_code, CharT>();
-#ifndef TEST_HAS_NO_FILESYSTEM_LIBRARY
- assert_formatter_is_disabled<std::filesystem::path, CharT>();
-#endif
- assert_formatter_is_disabled<std::shared_ptr<int>, CharT>();
-#ifndef TEST_HAS_NO_LOCALIZATION
- assert_formatter_is_disabled<std::sub_match<CharT*>, CharT>();
-#endif
-#ifndef TEST_HAS_NO_THREADS
- assert_formatter_is_disabled<std::thread::id, CharT>();
-#endif
- assert_formatter_is_disabled<std::unique_ptr<int>, CharT>();
-}
-
-// Tests for P2286 Formatting ranges
-//
-// The paper hasn't been voted in so currently all formatters are disabled.
-// TODO validate whether the test is correct after the paper has been accepted.
-template <class CharT>
-void test_P2286() {
- assert_formatter_is_disabled<std::array<int, 42>, CharT>();
- assert_formatter_is_disabled<std::vector<int>, CharT>();
- assert_formatter_is_disabled<std::deque<int>, CharT>();
- assert_formatter_is_disabled<std::forward_list<int>, CharT>();
- assert_formatter_is_disabled<std::list<int>, CharT>();
-
- assert_formatter_is_disabled<std::set<int>, CharT>();
- assert_formatter_is_disabled<std::map<int, int>, CharT>();
- assert_formatter_is_disabled<std::multiset<int>, CharT>();
- assert_formatter_is_disabled<std::multimap<int, int>, CharT>();
-
- assert_formatter_is_disabled<std::unordered_set<int>, CharT>();
- assert_formatter_is_disabled<std::unordered_map<int, int>, CharT>();
- assert_formatter_is_disabled<std::unordered_multiset<int>, CharT>();
- assert_formatter_is_disabled<std::unordered_multimap<int, int>, CharT>();
-
- assert_formatter_is_disabled<std::stack<int>, CharT>();
- assert_formatter_is_disabled<std::queue<int>, CharT>();
- assert_formatter_is_disabled<std::priority_queue<int>, CharT>();
-
- assert_formatter_is_disabled<std::span<int>, CharT>();
-
- assert_formatter_is_disabled<std::valarray<int>, CharT>();
-
- assert_formatter_is_disabled<std::pair<int, int>, CharT>();
- assert_formatter_is_disabled<std::tuple<int>, CharT>();
-}
-
-class c {
- void f();
- void fc() const;
- static void sf();
-};
-enum e { a };
-enum class ec { a };
-template <class CharT>
-void test_disabled() {
-#ifndef TEST_HAS_NO_WIDE_CHARACTERS
- assert_formatter_is_disabled<const char*, wchar_t>();
-#endif
- assert_formatter_is_disabled<const char*, char8_t>();
- assert_formatter_is_disabled<const char*, char16_t>();
- assert_formatter_is_disabled<const char*, char32_t>();
-
- assert_formatter_is_disabled<c, CharT>();
- assert_formatter_is_disabled<const c, CharT>();
- assert_formatter_is_disabled<volatile c, CharT>();
- assert_formatter_is_disabled<const volatile c, CharT>();
-
- assert_formatter_is_disabled<e, CharT>();
- assert_formatter_is_disabled<const e, CharT>();
- assert_formatter_is_disabled<volatile e, CharT>();
- assert_formatter_is_disabled<const volatile e, CharT>();
-
- assert_formatter_is_disabled<ec, CharT>();
- assert_formatter_is_disabled<const ec, CharT>();
- assert_formatter_is_disabled<volatile ec, CharT>();
- assert_formatter_is_disabled<const volatile ec, CharT>();
-
- assert_formatter_is_disabled<int*, CharT>();
- assert_formatter_is_disabled<const int*, CharT>();
- assert_formatter_is_disabled<volatile int*, CharT>();
- assert_formatter_is_disabled<const volatile int*, CharT>();
-
- assert_formatter_is_disabled<c*, CharT>();
- assert_formatter_is_disabled<const c*, CharT>();
- assert_formatter_is_disabled<volatile c*, CharT>();
- assert_formatter_is_disabled<const volatile c*, CharT>();
-
- assert_formatter_is_disabled<e*, CharT>();
- assert_formatter_is_disabled<const e*, CharT>();
- assert_formatter_is_disabled<volatile e*, CharT>();
- assert_formatter_is_disabled<const volatile e*, CharT>();
-
- assert_formatter_is_disabled<ec*, CharT>();
- assert_formatter_is_disabled<const ec*, CharT>();
- assert_formatter_is_disabled<volatile ec*, CharT>();
- assert_formatter_is_disabled<const volatile ec*, CharT>();
-
- assert_formatter_is_disabled<void (*)(), CharT>();
- assert_formatter_is_disabled<void (c::*)(), CharT>();
- assert_formatter_is_disabled<void (c::*)() const, CharT>();
-
- assert_formatter_is_disabled<std::optional<int>, CharT>();
- assert_formatter_is_disabled<std::variant<int>, CharT>();
-
- assert_formatter_is_disabled<std::shared_ptr<c>, CharT>();
- assert_formatter_is_disabled<std::unique_ptr<c>, CharT>();
-
- assert_formatter_is_disabled<std::array<c, 42>, CharT>();
- assert_formatter_is_disabled<std::vector<c>, CharT>();
- assert_formatter_is_disabled<std::deque<c>, CharT>();
- assert_formatter_is_disabled<std::forward_list<c>, CharT>();
- assert_formatter_is_disabled<std::list<c>, CharT>();
-
- assert_formatter_is_disabled<std::set<c>, CharT>();
- assert_formatter_is_disabled<std::map<c, int>, CharT>();
- assert_formatter_is_disabled<std::multiset<c>, CharT>();
- assert_formatter_is_disabled<std::multimap<c, int>, CharT>();
-
- assert_formatter_is_disabled<std::unordered_set<c>, CharT>();
- assert_formatter_is_disabled<std::unordered_map<c, int>, CharT>();
- assert_formatter_is_disabled<std::unordered_multiset<c>, CharT>();
- assert_formatter_is_disabled<std::unordered_multimap<c, int>, CharT>();
-
- assert_formatter_is_disabled<std::stack<c>, CharT>();
- assert_formatter_is_disabled<std::queue<c>, CharT>();
- assert_formatter_is_disabled<std::priority_queue<c>, CharT>();
-
- assert_formatter_is_disabled<std::span<c>, CharT>();
-
- assert_formatter_is_disabled<std::valarray<c>, CharT>();
-
- assert_formatter_is_disabled<std::pair<c, int>, CharT>();
- assert_formatter_is_disabled<std::tuple<c>, CharT>();
-
- assert_formatter_is_disabled<std::optional<c>, CharT>();
- assert_formatter_is_disabled<std::variant<c>, CharT>();
-}
-
-template <class CharT>
-void test() {
- test_P0645<CharT>();
- test_P1361<CharT>();
- test_P1636<CharT>();
- test_P2286<CharT>();
- test_disabled<CharT>();
-}
-
-void test() {
- test<char>();
-#ifndef TEST_HAS_NO_WIDE_CHARACTERS
- test<wchar_t>();
-#endif
- test<char8_t>();
- test<char16_t>();
- test<char32_t>();
-
- test<int>();
-}