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#include "test-helper.h"
#include <array>
#include <chrono>
#include <codecvt>
#include <deque>
#include <exception>
#include <limits>
#include <list>
#include <locale>
#include <ostream>
#include <random>
#include <string>
#include <tuple>
#include <type_traits>
#include <vector>
// output operators must be in same namespace as the type itself
namespace std {
#ifdef __cpp_char8_t
std::ostream& operator<<(std::ostream& os, std::basic_string<utf8_t> const& s)
{
os << "[";
for (auto& c: s)
os << " " << std::to_string(static_cast<uint8_t>(c));
os << "]";
return os;
}
#endif
std::ostream& operator<<(std::ostream& os, std::basic_string<char16_t> const& s)
{
os << "[";
for (auto& c: s)
os << " " << std::to_string(static_cast<uint16_t>(c));
os << "]";
return os;
}
std::ostream& operator<<(std::ostream& os, std::basic_string<char32_t> const& s)
{
os << "[";
for (auto& c: s)
os << " " << std::to_string(static_cast<uint32_t>(c));
os << "]";
return os;
}
} // namespace std
namespace {
// utility wrapper to adapt locale-bound facets for wstring/wbuffer convert
template<class Facet>
struct deletable_facet : Facet
{
template<class ...Args>
deletable_facet(Args&& ...args) : Facet(std::forward<Args>(args)...) {}
~deletable_facet() {}
};
// char8_t instead of char doesn't work w/ clang++-13 + C++20 (yet?)
std::wstring_convert<deletable_facet<std::codecvt<char16_t, char, std::mbstate_t>>, char16_t> conv16;
std::wstring_convert<deletable_facet<std::codecvt<char32_t, char, std::mbstate_t>>, char32_t> conv32;
} // namespace
template<>
std::basic_string<utf8_t> std_convert<utf8_t, utf8_t>(const std::basic_string<utf8_t>& s)
{
std::string a{s.begin(), s.end()};
a = conv32.to_bytes(conv32.from_bytes(a));
return std::basic_string<utf8_t>{a.begin(), a.end()};
}
template<>
std::basic_string<char16_t> std_convert<utf8_t, char16_t>(const std::basic_string<utf8_t>& s)
{
std::string a{s.begin(), s.end()};
return conv16.from_bytes(a);
}
template<>
std::basic_string<char32_t> std_convert<utf8_t, char32_t>(const std::basic_string<utf8_t>& s)
{
std::string a{s.begin(), s.end()};
return conv32.from_bytes(a);
}
template<>
std::basic_string<utf8_t> std_convert<char16_t, utf8_t>(const std::basic_string<char16_t>& s)
{
auto result{conv16.to_bytes(s)};
return std::basic_string<utf8_t>(result.begin(), result.end());
}
template<>
std::basic_string<char16_t> std_convert<char16_t, char16_t>(const std::basic_string<char16_t>& s)
{
return conv16.from_bytes(conv16.to_bytes(s));
}
template<>
std::basic_string<char32_t> std_convert<char16_t, char32_t>(const std::basic_string<char16_t>& s)
{
return conv32.from_bytes(conv16.to_bytes(s));
}
template<>
std::basic_string<utf8_t> std_convert<char32_t, utf8_t>(const std::basic_string<char32_t>& s)
{
auto result{conv32.to_bytes(s)};
return std::basic_string<utf8_t>(result.begin(), result.end());
}
template<>
std::basic_string<char16_t> std_convert<char32_t, char16_t>(const std::basic_string<char32_t>& s)
{
return conv16.from_bytes(conv32.to_bytes(s));
}
template<>
std::basic_string<char32_t> std_convert<char32_t, char32_t>(const std::basic_string<char32_t>& s)
{
return conv32.from_bytes(conv32.to_bytes(s));
}
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