std::range-default-formatter<std::range_format::string>, std::range-default-formatter<std::range_format::debug_string>
Defined in header <format>
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template< std::range_format K, ranges::input_range R, class CharT > requires (K == std::range_format::string || K == std::range_format::debug_string) |
(since C++23) (exposition only*) |
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The class template /*range-default-formatter*/ for range types is specialized for formatting range as a string or an escaped string if std::format_kind<R> is either std::range_format::string or std::range_format::debug_string.
[edit] Data members
Member | Definition |
underlying_ (private)
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the underlying formatter of type std::formatter<std::basic_string<CharT>, CharT> (exposition-only member object*) |
[edit] Member functions
(constructor) (implicitly declared) |
constructs a range-default-formatter (public member function) |
parse |
parses the format specifier as specified by std-format-spec (public member function) |
format |
writes the formatted output as specified by std-format-spec (public member function) |
std::range-default-formatter<std::range_format::string>::parse
std::range-default-formatter<std::range_format::debug_string>::parse
template< class ParseContext > constexpr auto parse( ParseContext& ctx ) -> ParseContext::iterator; |
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Equivalent to:
auto i = underlying_.parse(ctx);
if constexpr (K == std::range_format::debug_string)
underlying_.set_debug_format();
return i;
Returns an iterator past the end of the std-format-spec.
std::range-default-formatter<std::range_format::string>::format
std::range-default-formatter<std::range_format::debug_string>::format
template< class FormatContext > auto format( /* see below */& r, FormatContext& ctx ) const -> FormatContext::iterator; |
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If ranges::input_range<const R> is true, the type of r is const R&. Otherwise, the type is R&.
Let s be a std::basic_string<CharT> as if by constructing s with std::basic_string<CharT>(std::from_range, r) such that ranges::equal(s, r) is true.
Equivalent to return underlying_.format(s, ctx);.
Returns an iterator past the end of the output range.
[edit] See also
(C++20) |
defines formatting rules for a given type (class template) |
(C++23) |
class template that helps implementing std::formatter specializations for range types (class template) |