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//===----------------------------------------------------------------------===//
// 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: GCC-ALWAYS_INLINE-FIXME
// <format>
// basic_format_arg<Context> get(size_t i) const noexcept;
#include <format>
#include <cassert>
#include <limits>
#include <type_traits>
#include "test_macros.h"
#include "make_string.h"
template <class Context, class To, class From>
void test(From value) {
auto store = std::make_format_args<Context>(value);
const std::basic_format_args<Context> format_args{store};
auto visitor = [v = To(value)](auto a) {
if constexpr (std::is_same_v<To, decltype(a)>)
assert(v == a);
else
assert(false);
};
#if TEST_STD_VER >= 26 && defined(TEST_HAS_EXPLICIT_THIS_PARAMETER)
format_args.get(0).visit(visitor);
#else
std::visit_format_arg(visitor, format_args.get(0));
#endif
}
// Some types, as an extension, are stored in the variant. The Standard
// requires them to be observed as a handle.
template <class Context, class T>
void test_handle(T value) {
auto store = std::make_format_args<Context>(value);
std::basic_format_args<Context> format_args{store};
auto visitor = [](auto a) { assert((std::is_same_v<decltype(a), typename std::basic_format_arg<Context>::handle>)); };
#if TEST_STD_VER >= 26 && defined(TEST_HAS_EXPLICIT_THIS_PARAMETER)
format_args.get(0).visit(visitor);
#else
std::visit_format_arg(visitor, format_args.get(0));
#endif
}
// Test specific for string and string_view.
//
// Since both result in a string_view there's no need to pass this as a
// template argument.
template <class Context, class From>
void test_string_view(From value) {
auto store = std::make_format_args<Context>(value);
const std::basic_format_args<Context> format_args{store};
using CharT = typename Context::char_type;
using To = std::basic_string_view<CharT>;
using V = std::basic_string<CharT>;
auto visitor = [v = V(value.begin(), value.end())](auto a) {
if constexpr (std::is_same_v<To, decltype(a)>)
assert(v == a);
else
assert(false);
};
#if TEST_STD_VER >= 26 && defined(TEST_HAS_EXPLICIT_THIS_PARAMETER)
format_args.get(0).visit(visitor);
#else
std::visit_format_arg(visitor, format_args.get(0));
#endif
}
template <class CharT>
void test() {
using Context = std::basic_format_context<CharT*, CharT>;
using char_type = typename Context::char_type;
std::basic_string<char_type> empty;
std::basic_string<char_type> str = MAKE_STRING(char_type, "abc");
// Test boolean types.
test<Context, bool>(true);
test<Context, bool>(false);
// Test char_type types.
test<Context, char_type, char_type>('a');
test<Context, char_type, char_type>('z');
test<Context, char_type, char_type>('0');
test<Context, char_type, char_type>('9');
// Test char types.
if (std::is_same_v<char_type, char>) {
// char to char -> char
test<Context, char_type, char>('a');
test<Context, char_type, char>('z');
test<Context, char_type, char>('0');
test<Context, char_type, char>('9');
} else {
if (std::is_same_v<char_type, wchar_t>) {
// char to wchar_t -> wchar_t
test<Context, wchar_t, char>('a');
test<Context, wchar_t, char>('z');
test<Context, wchar_t, char>('0');
test<Context, wchar_t, char>('9');
} else if (std::is_signed_v<char>) {
// char to char_type -> int
// This happens when Context::char_type is a char8_t, char16_t, or
// char32_t and char is a signed type.
// Note if sizeof(char_type) > sizeof(int) this test fails. If there are
// platforms where that occurs extra tests need to be added for char32_t
// testing it against a long long.
test<Context, int, char>('a');
test<Context, int, char>('z');
test<Context, int, char>('0');
test<Context, int, char>('9');
} else {
// char to char_type -> unsigned
// This happens when Context::char_type is a char8_t, char16_t, or
// char32_t and char is an unsigned type.
// Note if sizeof(char_type) > sizeof(unsigned) this test fails. If there
// are platforms where that occurs extra tests need to be added for
// char32_t testing it against an unsigned long long.
test<Context, unsigned, char>('a');
test<Context, unsigned, char>('z');
test<Context, unsigned, char>('0');
test<Context, unsigned, char>('9');
}
}
// Test signed integer types.
test<Context, int, signed char>(std::numeric_limits<signed char>::min());
test<Context, int, signed char>(0);
test<Context, int, signed char>(std::numeric_limits<signed char>::max());
test<Context, int, short>(std::numeric_limits<short>::min());
test<Context, int, short>(std::numeric_limits<signed char>::min());
test<Context, int, short>(0);
test<Context, int, short>(std::numeric_limits<signed char>::max());
test<Context, int, short>(std::numeric_limits<short>::max());
test<Context, int, int>(std::numeric_limits<int>::min());
test<Context, int, int>(std::numeric_limits<short>::min());
test<Context, int, int>(std::numeric_limits<signed char>::min());
test<Context, int, int>(0);
test<Context, int, int>(std::numeric_limits<signed char>::max());
test<Context, int, int>(std::numeric_limits<short>::max());
test<Context, int, int>(std::numeric_limits<int>::max());
using LongToType =
std::conditional_t<sizeof(long) == sizeof(int), int, long long>;
test<Context, LongToType, long>(std::numeric_limits<long>::min());
test<Context, LongToType, long>(std::numeric_limits<int>::min());
test<Context, LongToType, long>(std::numeric_limits<short>::min());
test<Context, LongToType, long>(std::numeric_limits<signed char>::min());
test<Context, LongToType, long>(0);
test<Context, LongToType, long>(std::numeric_limits<signed char>::max());
test<Context, LongToType, long>(std::numeric_limits<short>::max());
test<Context, LongToType, long>(std::numeric_limits<int>::max());
test<Context, LongToType, long>(std::numeric_limits<long>::max());
test<Context, long long, long long>(std::numeric_limits<long long>::min());
test<Context, long long, long long>(std::numeric_limits<long>::min());
test<Context, long long, long long>(std::numeric_limits<int>::min());
test<Context, long long, long long>(std::numeric_limits<short>::min());
test<Context, long long, long long>(std::numeric_limits<signed char>::min());
test<Context, long long, long long>(0);
test<Context, long long, long long>(std::numeric_limits<signed char>::max());
test<Context, long long, long long>(std::numeric_limits<short>::max());
test<Context, long long, long long>(std::numeric_limits<int>::max());
test<Context, long long, long long>(std::numeric_limits<long>::max());
test<Context, long long, long long>(std::numeric_limits<long long>::max());
#ifndef TEST_HAS_NO_INT128
test_handle<Context, __int128_t>(0);
#endif // TEST_HAS_NO_INT128
// Test unsigned integer types.
test<Context, unsigned, unsigned char>(0);
test<Context, unsigned, unsigned char>(
std::numeric_limits<unsigned char>::max());
test<Context, unsigned, unsigned short>(0);
test<Context, unsigned, unsigned short>(
std::numeric_limits<unsigned char>::max());
test<Context, unsigned, unsigned short>(
std::numeric_limits<unsigned short>::max());
test<Context, unsigned, unsigned>(0);
test<Context, unsigned, unsigned>(std::numeric_limits<unsigned char>::max());
test<Context, unsigned, unsigned>(std::numeric_limits<unsigned short>::max());
test<Context, unsigned, unsigned>(std::numeric_limits<unsigned>::max());
using UnsignedLongToType =
std::conditional_t<sizeof(unsigned long) == sizeof(unsigned), unsigned,
unsigned long long>;
test<Context, UnsignedLongToType, unsigned long>(0);
test<Context, UnsignedLongToType, unsigned long>(
std::numeric_limits<unsigned char>::max());
test<Context, UnsignedLongToType, unsigned long>(
std::numeric_limits<unsigned short>::max());
test<Context, UnsignedLongToType, unsigned long>(
std::numeric_limits<unsigned>::max());
test<Context, UnsignedLongToType, unsigned long>(
std::numeric_limits<unsigned long>::max());
test<Context, unsigned long long, unsigned long long>(0);
test<Context, unsigned long long, unsigned long long>(
std::numeric_limits<unsigned char>::max());
test<Context, unsigned long long, unsigned long long>(
std::numeric_limits<unsigned short>::max());
test<Context, unsigned long long, unsigned long long>(
std::numeric_limits<unsigned>::max());
test<Context, unsigned long long, unsigned long long>(
std::numeric_limits<unsigned long>::max());
test<Context, unsigned long long, unsigned long long>(
std::numeric_limits<unsigned long long>::max());
#ifndef TEST_HAS_NO_INT128
test_handle<Context, __uint128_t>(0);
#endif // TEST_HAS_NO_INT128
// Test floating point types.
test<Context, float, float>(-std::numeric_limits<float>::max());
test<Context, float, float>(-std::numeric_limits<float>::min());
test<Context, float, float>(-0.0);
test<Context, float, float>(0.0);
test<Context, float, float>(std::numeric_limits<float>::min());
test<Context, float, float>(std::numeric_limits<float>::max());
test<Context, double, double>(-std::numeric_limits<double>::max());
test<Context, double, double>(-std::numeric_limits<double>::min());
test<Context, double, double>(-0.0);
test<Context, double, double>(0.0);
test<Context, double, double>(std::numeric_limits<double>::min());
test<Context, double, double>(std::numeric_limits<double>::max());
test<Context, long double, long double>(
-std::numeric_limits<long double>::max());
test<Context, long double, long double>(
-std::numeric_limits<long double>::min());
test<Context, long double, long double>(-0.0);
test<Context, long double, long double>(0.0);
test<Context, long double, long double>(
std::numeric_limits<long double>::min());
test<Context, long double, long double>(
std::numeric_limits<long double>::max());
// Test const char_type pointer types.
test<Context, const char_type*, const char_type*>(empty.c_str());
test<Context, const char_type*, const char_type*>(str.c_str());
// Test string_view types.
test<Context, std::basic_string_view<char_type>>(
std::basic_string_view<char_type>());
test<Context, std::basic_string_view<char_type>,
std::basic_string_view<char_type>>(empty);
test<Context, std::basic_string_view<char_type>,
std::basic_string_view<char_type>>(str);
// Test string types.
test<Context, std::basic_string_view<char_type>>(
std::basic_string<char_type>());
test<Context, std::basic_string_view<char_type>,
std::basic_string<char_type>>(empty);
test<Context, std::basic_string_view<char_type>,
std::basic_string<char_type>>(str);
// Test pointer types.
test<Context, const void*>(nullptr);
}
void test() {
test<char>();
#ifndef TEST_HAS_NO_WIDE_CHARACTERS
test<wchar_t>();
#endif
}
int main(int, char**) {
test();
return 0;
}
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