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Add a formatter for float128

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This commit is contained in:
Victor Zverovich 2024-03-22 15:41:50 +09:00
parent aecec01b34
commit 5d63e87d23
2 changed files with 48 additions and 48 deletions
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57
include/fmt/base.h
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@ -2799,6 +2799,33 @@ FMT_API void vprint_mojibake(FILE*, string_view, format_args, bool = false);
#ifndef _WIN32
inline void vprint_mojibake(FILE*, string_view, format_args, bool) {}
#endif
template <typename T, typename Char, type TYPE> struct native_formatter {
private:
dynamic_format_specs<Char> specs_;
public:
using nonlocking = void;
template <typename ParseContext>
FMT_CONSTEXPR auto parse(ParseContext& ctx) -> const Char* {
if (ctx.begin() == ctx.end() || *ctx.begin() == '}') return ctx.begin();
auto end = parse_format_specs(ctx.begin(), ctx.end(), specs_, ctx, TYPE);
if (TYPE == type::char_type) check_char_specs(specs_);
return end;
}
template <type U = TYPE,
FMT_ENABLE_IF(U == type::string_type || U == type::cstring_type ||
U == type::char_type)>
FMT_CONSTEXPR void set_debug_format(bool set = true) {
specs_.type = set ? presentation_type::debug : presentation_type::none;
}
template <typename FormatContext>
FMT_CONSTEXPR auto format(const T& val, FormatContext& ctx) const
-> decltype(ctx.out());
};
} // namespace detail
FMT_BEGIN_EXPORT
@ -2807,34 +2834,8 @@ FMT_BEGIN_EXPORT
template <typename T, typename Char>
struct formatter<T, Char,
enable_if_t<detail::type_constant<T, Char>::value !=
detail::type::custom_type>> {
private:
detail::dynamic_format_specs<Char> specs_;
public:
using nonlocking = void;
template <typename ParseContext>
FMT_CONSTEXPR auto parse(ParseContext& ctx) -> const Char* {
if (ctx.begin() == ctx.end() || *ctx.begin() == '}') return ctx.begin();
auto type = detail::type_constant<T, Char>::value;
auto end =
detail::parse_format_specs(ctx.begin(), ctx.end(), specs_, ctx, type);
if (type == detail::type::char_type) detail::check_char_specs(specs_);
return end;
}
template <detail::type U = detail::type_constant<T, Char>::value,
FMT_ENABLE_IF(U == detail::type::string_type ||
U == detail::type::cstring_type ||
U == detail::type::char_type)>
FMT_CONSTEXPR void set_debug_format(bool set = true) {
specs_.type = set ? presentation_type::debug : presentation_type::none;
}
template <typename FormatContext>
FMT_CONSTEXPR auto format(const T& val, FormatContext& ctx) const
-> decltype(ctx.out());
detail::type::custom_type>>
: detail::native_formatter<T, Char, detail::type_constant<T, Char>::value> {
};
template <typename Char = char> struct runtime_format_string {

39
include/fmt/format.h
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@ -4321,8 +4321,27 @@ extern template FMT_API auto decimal_point_impl(locale_ref) -> char;
extern template FMT_API auto decimal_point_impl(locale_ref) -> wchar_t;
#endif // FMT_HEADER_ONLY
template <typename T, typename Char, type TYPE>
template <typename FormatContext>
FMT_CONSTEXPR FMT_INLINE auto native_formatter<T, Char, TYPE>::format(
const T& val, FormatContext& ctx) const -> decltype(ctx.out()) {
if (specs_.width_ref.kind == arg_id_kind::none &&
specs_.precision_ref.kind == arg_id_kind::none) {
return write<Char>(ctx.out(), val, specs_, ctx.locale());
}
auto specs = specs_;
handle_dynamic_spec<width_checker>(specs.width, specs.width_ref, ctx);
handle_dynamic_spec<precision_checker>(specs.precision, specs.precision_ref,
ctx);
return write<Char>(ctx.out(), val, specs, ctx.locale());
}
} // namespace detail
template <typename Char>
struct formatter<detail::float128, Char>
: detail::native_formatter<detail::float128, Char,
detail::type::float_type> {};
#if FMT_USE_USER_DEFINED_LITERALS
inline namespace literals {
/**
@ -4412,26 +4431,6 @@ FMT_NODISCARD FMT_INLINE auto formatted_size(const Locale& loc,
FMT_END_EXPORT
template <typename T, typename Char>
template <typename FormatContext>
FMT_CONSTEXPR FMT_INLINE auto
formatter<T, Char,
enable_if_t<detail::type_constant<T, Char>::value !=
detail::type::custom_type>>::format(const T& val,
FormatContext& ctx)
const -> decltype(ctx.out()) {
if (specs_.width_ref.kind == detail::arg_id_kind::none &&
specs_.precision_ref.kind == detail::arg_id_kind::none) {
return detail::write<Char>(ctx.out(), val, specs_, ctx.locale());
}
auto specs = specs_;
detail::handle_dynamic_spec<detail::width_checker>(specs.width,
specs.width_ref, ctx);
detail::handle_dynamic_spec<detail::precision_checker>(
specs.precision, specs.precision_ref, ctx);
return detail::write<Char>(ctx.out(), val, specs, ctx.locale());
}
FMT_END_NAMESPACE
#ifdef FMT_HEADER_ONLY