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Different implementation of FMT_STATICALLY_WIDEN

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This commit is contained in:
Barry Revzin 2022-07-27 07:11:45 -05:00
parent 3a560b7dd9
commit 2e281620fc
1 changed files with 23 additions and 14 deletions
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37
include/fmt/ranges.h
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@ -319,9 +319,13 @@ inline FMT_CONSTEXPR const wchar_t* choose_literal(
return literal;
}
#define FMT_STATICALLY_WIDEN(CharT, Literal) \
::fmt::detail::choose_literal(std::is_same<char, CharT>(), Literal, \
L##Literal)
template <typename CharT, CharT... C> struct string_literal {
static constexpr CharT value[] = {C...};
constexpr operator basic_string_view<CharT>() const {
return {value, sizeof...(C)};
}
};
} // namespace detail
template <typename T> struct is_tuple_like {
@ -339,9 +343,11 @@ struct formatter<TupleT, Char,
enable_if_t<fmt::is_tuple_like<TupleT>::value &&
fmt::is_tuple_formattable<TupleT, Char>::value>> {
private:
basic_string_view<Char> separator_ = FMT_STATICALLY_WIDEN(Char, ", ");
basic_string_view<Char> opening_bracket_ = FMT_STATICALLY_WIDEN(Char, "(");
basic_string_view<Char> closing_bracket_ = FMT_STATICALLY_WIDEN(Char, ")");
basic_string_view<Char> separator_ = detail::string_literal<Char, ',', ' '>{};
basic_string_view<Char> opening_bracket_ =
detail::string_literal<Char, '('>{};
basic_string_view<Char> closing_bracket_ =
detail::string_literal<Char, ')'>{};
// C++11 generic lambda for format().
template <typename FormatContext> struct format_each {
@ -435,9 +441,11 @@ struct range_formatter<
private:
detail::range_formatter_type<Char, T> underlying_;
bool custom_specs_ = false;
basic_string_view<Char> separator_ = FMT_STATICALLY_WIDEN(Char, ", ");
basic_string_view<Char> opening_bracket_ = FMT_STATICALLY_WIDEN(Char, "[");
basic_string_view<Char> closing_bracket_ = FMT_STATICALLY_WIDEN(Char, "]");
basic_string_view<Char> separator_ = detail::string_literal<Char, ',', ' '>{};
basic_string_view<Char> opening_bracket_ =
detail::string_literal<Char, '['>{};
basic_string_view<Char> closing_bracket_ =
detail::string_literal<Char, ']'>{};
template <class U>
FMT_CONSTEXPR static auto maybe_set_debug_format(U& u, int)
@ -545,15 +553,16 @@ struct range_default_formatter<
FMT_CONSTEXPR range_default_formatter() { init(range_format_constant<K>()); }
FMT_CONSTEXPR void init(range_format_constant<range_format::set>) {
underlying_.set_brackets(FMT_STATICALLY_WIDEN(Char, "{"),
FMT_STATICALLY_WIDEN(Char, "}"));
underlying_.set_brackets(detail::string_literal<Char, '{'>{},
detail::string_literal<Char, '}'>{});
}
FMT_CONSTEXPR void init(range_format_constant<range_format::map>) {
underlying_.set_brackets(FMT_STATICALLY_WIDEN(Char, "{"),
FMT_STATICALLY_WIDEN(Char, "}"));
underlying_.set_brackets(detail::string_literal<Char, '{'>{},
detail::string_literal<Char, '}'>{});
underlying_.underlying().set_brackets({}, {});
underlying_.underlying().set_separator(FMT_STATICALLY_WIDEN(Char, ": "));
underlying_.underlying().set_separator(
detail::string_literal<Char, ':', ' '>{});
}
FMT_CONSTEXPR void init(range_format_constant<range_format::sequence>) {}