Reenable support for fallback formatter to join (#2040) #2050
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vitaut
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Dec 6, 2020
include/fmt/ostream.h
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| @@ -147,6 +147,19 @@ struct fallback_formatter<T, Char, enable_if_t<is_streamable<T, Char>::value>> | |||
| return std::copy(buffer.begin(), buffer.end(), ctx.out()); | |||
| } | |||
| }; | |||
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| template <typename It, typename Sentinel, typename Char> | |||
| struct fallback_formatter<arg_join<It, Sentinel, Char>, Char> | |||
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fallback_formatter is not an extension point so it shouldn't be specialize for arg_join. Instead make formatter specialization enabled if there is a fallback formatter for the element type as it is done for ranges.
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Ok hope it is better now.
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vitaut
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Dec 7, 2020
include/fmt/format.h
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| : formatter<typename std::iterator_traits<It>::value_type, Char> { | ||
| struct formatter<arg_join<It, Sentinel, Char>, Char> { | ||
| using value_type = typename std::iterator_traits<It>::value_type; | ||
| using context_type = basic_format_context<arg_join<It, Sentinel, Char>, Char>; |
include/fmt/format.h
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| using context_type = basic_format_context<arg_join<It, Sentinel, Char>, Char>; | ||
| using formatter_type = | ||
| conditional_t<has_formatter<value_type, format_context>::value, | ||
| typename context_type::template formatter_type<value_type>, |
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Just use formatter<value_type, Char> here.
include/fmt/format.h
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| using value_type = typename std::iterator_traits<It>::value_type; | ||
| using context_type = basic_format_context<arg_join<It, Sentinel, Char>, Char>; | ||
| using formatter_type = | ||
| conditional_t<has_formatter<value_type, format_context>::value, | ||
| typename context_type::template formatter_type<value_type>, | ||
| detail::fallback_formatter<value_type, Char>>; | ||
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| formatter_type formatting; |
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vitaut
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vitaut
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Dec 8, 2020
vitaut
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Dec 8, 2020
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Merged, thanks. |
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Thanks for your time and what you have done so far. It is really great! |
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I agree that my contributions are licensed under the {fmt} license, and agree to future changes to the licensing.