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use constexpr

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This commit is contained in:
Walter Gray 2020-11-13 11:34:29 -08:00
parent 969dcce51a
commit 45c7c29bd5
1 changed files with 13 additions and 23 deletions
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36
include/fmt/chrono.h
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@ -764,18 +764,15 @@ inline std::chrono::duration<Rep, std::milli> get_milliseconds(
template <typename Char, typename Rep, typename OutputIt> template <typename Char, typename Rep, typename OutputIt>
OutputIt format_duration_value(OutputIt out, Rep val, int precision) { OutputIt format_duration_value(OutputIt out, Rep val, int precision) {
using context = FMT_BUFFER_CONTEXT(type_identity_t<Char>); static constexpr const Char pr_f[] = {'{', ':', '.', '{', '}', 'f', '}', 0};
if (precision >= 0) return format_to(out, FMT_STRING(pr_f), val, precision);
const Char pr_f[] = {'{', ':', '.', '{', '}', 'f', '}', 0}; static constexpr const Char fp_f[] = {'{', ':', 'g', '}', 0};
if (precision >= 0) { static constexpr const Char format[] = {'{', '}', 0};
return vformat_to(out, to_string_view(pr_f), if(std::is_floating_point<Rep>::value) {
make_format_args<context>(val, precision)); return format_to(out, FMT_STRING(fp_f), val);
} else {
return format_to(out, FMT_STRING(format), val);
} }
const Char fp_f[] = {'{', ':', 'g', '}', 0};
const Char format[] = {'{', '}', 0};
return vformat_to(
out, to_string_view(std::is_floating_point<Rep>::value ? fp_f : format),
make_format_args<context>(val));
} }
template <typename Char, typename OutputIt> template <typename Char, typename OutputIt>
@ -793,19 +790,12 @@ OutputIt copy_unit(string_view unit, OutputIt out, wchar_t) {
template <typename Char, typename Period, typename OutputIt> template <typename Char, typename Period, typename OutputIt>
OutputIt format_duration_unit(OutputIt out) { OutputIt format_duration_unit(OutputIt out) {
using context = FMT_BUFFER_CONTEXT(type_identity_t<Char>); if (const char* unit = get_units<Period>())
if (const char* unit = get_units<Period>()) {
return copy_unit(string_view(unit), out, Char()); return copy_unit(string_view(unit), out, Char());
} static constexpr const Char num_f[] = {'[', '{', '}', ']', 's', 0};
const Char num_f[] = {'[', '{', '}', ']', 's', 0}; if (const_check(Period::den == 1)) return format_to(out, FMT_STRING(num_f), Period::num);
if (const_check(Period::den == 1)) { static constexpr const Char num_def_f[] = {'[', '{', '}', '/', '{', '}', ']', 's', 0};
return vformat_to(out, to_string_view(num_f), return format_to(out, FMT_STRING(num_def_f), Period::num, Period::den);
make_format_args<context>(Period::num));
}
const Char num_def_f[] = {'[', '{', '}', '/', '{', '}', ']', 's', 0};
return vformat_to(out, to_string_view(num_def_f),
make_format_args<context>(Period::num, Period::den));
} }
template <typename FormatContext, typename OutputIt, typename Rep, template <typename FormatContext, typename OutputIt, typename Rep,