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Improve performance

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This commit is contained in:
Vladislav Shchapov 2021-10-13 20:45:08 +05:00 committed by Victor Zverovich
parent 5dc3dd3d4a
commit 27c3674ce1
1 changed files with 9 additions and 6 deletions
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15
include/fmt/chrono.h
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@ -1458,7 +1458,9 @@ template <typename FormatContext, typename OutputIt> struct tm_formatter {
void write1(size_t value) { *out++ = detail::digits2(value)[1]; }
void write2(size_t value) {
out = std::copy_n(detail::digits2(value), 2, out);
const char* d = detail::digits2(value);
*out++ = *d++;
*out++ = *d;
}
void write_year(int year) {
if (year >= 0 && year < 10000) {
@ -1496,11 +1498,11 @@ template <typename FormatContext, typename OutputIt> struct tm_formatter {
buf.reserve(buf.capacity() + (size > MIN_GROWTH ? size : MIN_GROWTH));
}
// Remove the extra space.
out = std::copy(buf.begin() + 1, buf.end(), out);
out = detail::copy_str<char_type>(buf.begin() + 1, buf.end(), out);
}
FMT_CONSTEXPR void on_text(const char_type* begin, const char_type* end) {
out = std::copy(begin, end, out);
out = detail::copy_str<char_type>(begin, end, out);
}
void on_abbr_weekday() { format_localized('a'); }
void on_full_weekday() { format_localized('A'); }
@ -1536,7 +1538,7 @@ template <typename FormatContext, typename OutputIt> struct tm_formatter {
buf, detail::to_unsigned(tm.tm_mon + 1),
detail::to_unsigned(tm.tm_mday),
detail::to_unsigned(tm_split_year(tm_year()).lower), '/');
out = std::copy_n(buf, sizeof(buf), out);
out = detail::copy_str<char_type>(std::begin(buf), std::end(buf), out);
}
void on_iso_date() {
auto year = tm_year();
@ -1552,7 +1554,8 @@ template <typename FormatContext, typename OutputIt> struct tm_formatter {
detail::write_digit2_separated(buf + 2, year % 100,
detail::to_unsigned(tm.tm_mon + 1),
detail::to_unsigned(tm.tm_mday), '-');
out = std::copy_n(buf + offset, sizeof(buf) - offset, out);
out = detail::copy_str<char_type>(std::begin(buf) + offset, std::end(buf),
out);
}
void on_utc_offset() { format_localized('z'); }
void on_tz_name() { format_localized('Z'); }
@ -1679,7 +1682,7 @@ template <typename FormatContext, typename OutputIt> struct tm_formatter {
detail::write_digit2_separated(buf, detail::to_unsigned(tm.tm_hour),
detail::to_unsigned(tm.tm_min),
detail::to_unsigned(tm.tm_sec), ':');
out = std::copy_n(buf, sizeof(buf), out);
out = detail::copy_str<char_type>(std::begin(buf), std::end(buf), out);
}
void on_am_pm() { format_localized('p'); }