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#pragma once
#include <unicode.h>
#include <string>
// 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);
#endif
std::ostream& operator<<(std::ostream& os, std::basic_string<char16_t> const& s);
std::ostream& operator<<(std::ostream& os, std::basic_string<char32_t> const& s);
} // namespace std
template<typename From, typename To>
std::basic_string<To> std_convert(const std::basic_string<From>& s);
template<>
std::basic_string<utf8_t> std_convert<utf8_t, utf8_t>(const std::basic_string<utf8_t>& s);
template<>
std::basic_string<char16_t> std_convert<utf8_t, char16_t>(const std::basic_string<utf8_t>& s);
template<>
std::basic_string<char32_t> std_convert<utf8_t, char32_t>(const std::basic_string<utf8_t>& s);
template<>
std::basic_string<utf8_t> std_convert<char16_t, utf8_t>(const std::basic_string<char16_t>& s);
template<>
std::basic_string<char16_t> std_convert<char16_t, char16_t>(const std::basic_string<char16_t>& s);
template<>
std::basic_string<char32_t> std_convert<char16_t, char32_t>(const std::basic_string<char16_t>& s);
template<>
std::basic_string<utf8_t> std_convert<char32_t, utf8_t>(const std::basic_string<char32_t>& s);
template<>
std::basic_string<char16_t> std_convert<char32_t, char16_t>(const std::basic_string<char32_t>& s);
template<>
std::basic_string<char32_t> std_convert<char32_t, char32_t>(const std::basic_string<char32_t>& s);
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