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Fix enable_ifs for map formatter (#2944)

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Jonathan W 2022-06-23 17:24:11 +02:00 committed by GitHub
parent 7c56e11ecf
commit e8bd2a804d
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1 changed files with 13 additions and 4 deletions
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17
include/fmt/ranges.h
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@ -269,6 +269,14 @@ using range_reference_type =
template <typename Range>
using uncvref_type = remove_cvref_t<range_reference_type<Range>>;
template <typename Range>
using uncvref_first_type = remove_cvref_t<
decltype(std::declval<range_reference_type<Range>>().first)>;
template <typename Range>
using uncvref_second_type = remove_cvref_t<
decltype(std::declval<range_reference_type<Range>>().second)>;
template <typename OutputIt> OutputIt write_delimiter(OutputIt out) {
*out++ = ',';
*out++ = ' ';
@ -452,11 +460,12 @@ struct formatter<
enable_if_t<detail::is_map<T>::value
// Workaround a bug in MSVC 2019 and earlier.
#if !FMT_MSC_VERSION
&& (is_formattable<detail::uncvref_type<T>, Char>::value ||
detail::has_fallback_formatter<detail::uncvref_type<T>,
Char>::value)
&& (is_formattable<detail::uncvref_first_type<T>, Char>::value ||
detail::has_fallback_formatter<detail::uncvref_first_type<T>, Char>::value)
&& (is_formattable<detail::uncvref_second_type<T>, Char>::value ||
detail::has_fallback_formatter<detail::uncvref_second_type<T>, Char>::value)
#endif
>> {
>> {
template <typename ParseContext>
FMT_CONSTEXPR auto parse(ParseContext& ctx) -> decltype(ctx.begin()) {
return ctx.begin();