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Inherit from formatter<Arg> to get the underlying parse and format

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This commit is contained in:
rbrugo 2022-03-07 16:12:15 +01:00
parent ea8a98ea5c
commit c9b14e9bd4
1 changed files with 2 additions and 17 deletions
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19
include/fmt/color.h
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@ -643,22 +643,7 @@ template <typename Arg> struct styled_arg {
FMT_END_DETAIL_NAMESPACE
template <typename Arg, typename Char>
struct formatter<detail::styled_arg<Arg>, Char> {
private:
using value_type = Arg;
using formatter_type =
conditional_t<is_formattable<value_type, Char>::value,
formatter<remove_cvref_t<value_type>, Char>,
detail::fallback_formatter<value_type, Char>>;
formatter_type value_formatter_;
public:
template <typename ParseContext>
FMT_CONSTEXPR auto parse(ParseContext& ctx) -> decltype(ctx.begin()) {
return value_formatter_.parse(ctx);
}
struct formatter<detail::styled_arg<Arg>, Char> : formatter<Arg, Char> {
template <typename FormatContext>
auto format(detail::styled_arg<Arg> const& arg, FormatContext& ctx) const
-> decltype(ctx.out()) {
@ -687,7 +672,7 @@ struct formatter<detail::styled_arg<Arg>, Char> {
detail::make_background_color<Char>(ts.get_background());
buf.append(background.begin(), background.end());
}
out = value_formatter_.format(value, ctx);
out = formatter<Arg, Char>::format(value, ctx);
if (has_style) detail::reset_color<Char>(buf);
return out;
}