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Support 'to_wstring(T)' in module.

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Daniela Engert 2021-04-27 19:35:06 +02:00
parent 84a36b99bf
commit 051a5adf93
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GPG Key ID: 7B95EE52040C5975
1 changed files with 26 additions and 8 deletions
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34
include/fmt/format.h
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@ -3741,6 +3741,21 @@ arg_join<detail::iterator_t<Range>, detail::sentinel_t<Range>, wchar_t> join(
return join(std::begin(range), std::end(range), sep); return join(std::begin(range), std::end(range), sep);
} }
FMT_MODULE_EXPORT_END
namespace detail {
template <typename Char, typename T>
inline std::basic_string<Char> integral_to_string(T value) {
// The buffer should be large enough to store the number including the sign or
// "false" for bool.
constexpr int max_size = detail::digits10<T>() + 2;
Char buffer[max_size > 5 ? static_cast<unsigned>(max_size) : 5];
Char* begin = buffer;
return std::basic_string<Char>(begin, detail::write<Char>(begin, value));
}
}
FMT_MODULE_EXPORT_BEGIN
/** /**
\rst \rst
Converts *value* to ``std::string`` using the default format for type *T*. Converts *value* to ``std::string`` using the default format for type *T*.
@ -3761,19 +3776,22 @@ inline std::string to_string(const T& value) {
template <typename T, FMT_ENABLE_IF(std::is_integral<T>::value)> template <typename T, FMT_ENABLE_IF(std::is_integral<T>::value)>
inline std::string to_string(T value) { inline std::string to_string(T value) {
// The buffer should be large enough to store the number including the sign or return detail::integral_to_string<char>(value);
// "false" for bool.
constexpr int max_size = detail::digits10<T>() + 2;
char buffer[max_size > 5 ? static_cast<unsigned>(max_size) : 5];
char* begin = buffer;
return std::string(begin, detail::write<char>(begin, value));
} }
/** /**
Converts *value* to ``std::wstring`` using the default format for type *T*. Converts *value* to ``std::wstring`` using the default format for type *T*.
*/ */
template <typename T> inline std::wstring to_wstring(const T& value) { template <typename T, FMT_ENABLE_IF(!std::is_integral<T>::value)>
return format(FMT_STRING(L"{}"), value); inline std::wstring to_wstring(const T& value) {
std::wstring result;
detail::write<wchar_t>(std::back_inserter(result), value);
return result;
}
template <typename T, FMT_ENABLE_IF(std::is_integral<T>::value)>
inline std::wstring to_wstring(T value) {
return detail::integral_to_string<wchar_t>(value);
} }
template <typename Char, size_t SIZE> template <typename Char, size_t SIZE>