Export of internal Abseil changes
-- 509c39cb5aa70893a180e5625e06cd9f76061ecf by Shaindel Schwartz <shaindel@google.com>: Release CivilTime parsing API. PiperOrigin-RevId: 270262448 GitOrigin-RevId: 509c39cb5aa70893a180e5625e06cd9f76061ecf Change-Id: I343eb3062cdf6a2c53e6fddcaa35eb25d7478b1a
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@ -42,6 +42,58 @@ std::string FormatYearAnd(string_view fmt, CivilSecond cs) {
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FormatTime(std::string(fmt), FromCivil(ncs, utc), utc));
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FormatTime(std::string(fmt), FromCivil(ncs, utc), utc));
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}
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}
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template <typename CivilT>
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bool ParseYearAnd(string_view fmt, string_view s, CivilT* c) {
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// Civil times support a larger year range than absl::Time, so we need to
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// parse the year separately, normalize it, then use absl::ParseTime on the
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// normalized std::string.
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const std::string ss = std::string(s); // TODO(absl-team): Avoid conversion.
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const char* const np = ss.c_str();
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char* endp;
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errno = 0;
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const civil_year_t y =
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std::strtoll(np, &endp, 10); // NOLINT(runtime/deprecated_fn)
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if (endp == np || errno == ERANGE) return false;
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const std::string norm = StrCat(NormalizeYear(y), endp);
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const TimeZone utc = UTCTimeZone();
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Time t;
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if (ParseTime(StrCat("%Y", fmt), norm, utc, &t, nullptr)) {
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const auto cs = ToCivilSecond(t, utc);
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*c = CivilT(y, cs.month(), cs.day(), cs.hour(), cs.minute(), cs.second());
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return true;
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}
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return false;
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}
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// Tries to parse the type as a CivilT1, but then assigns the result to the
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// argument of type CivilT2.
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template <typename CivilT1, typename CivilT2>
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bool ParseAs(string_view s, CivilT2* c) {
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CivilT1 t1;
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if (ParseCivilTime(s, &t1)) {
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*c = CivilT2(t1);
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return true;
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}
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return false;
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}
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template <typename CivilT>
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bool ParseLenient(string_view s, CivilT* c) {
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// A fastpath for when the given std::string data parses exactly into the given
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// type T (e.g., s="YYYY-MM-DD" and CivilT=CivilDay).
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if (ParseCivilTime(s, c)) return true;
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// Try parsing as each of the 6 types, trying the most common types first
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// (based on csearch results).
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if (ParseAs<CivilDay>(s, c)) return true;
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if (ParseAs<CivilSecond>(s, c)) return true;
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if (ParseAs<CivilHour>(s, c)) return true;
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if (ParseAs<CivilMonth>(s, c)) return true;
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if (ParseAs<CivilMinute>(s, c)) return true;
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if (ParseAs<CivilYear>(s, c)) return true;
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return false;
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}
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} // namespace
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} // namespace
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std::string FormatCivilTime(CivilSecond c) {
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std::string FormatCivilTime(CivilSecond c) {
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@ -57,6 +109,44 @@ std::string FormatCivilTime(CivilDay c) { return FormatYearAnd("-%m-%d", c); }
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std::string FormatCivilTime(CivilMonth c) { return FormatYearAnd("-%m", c); }
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std::string FormatCivilTime(CivilMonth c) { return FormatYearAnd("-%m", c); }
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std::string FormatCivilTime(CivilYear c) { return FormatYearAnd("", c); }
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std::string FormatCivilTime(CivilYear c) { return FormatYearAnd("", c); }
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bool ParseCivilTime(string_view s, CivilSecond* c) {
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return ParseYearAnd("-%m-%dT%H:%M:%S", s, c);
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}
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bool ParseCivilTime(string_view s, CivilMinute* c) {
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return ParseYearAnd("-%m-%dT%H:%M", s, c);
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}
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bool ParseCivilTime(string_view s, CivilHour* c) {
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return ParseYearAnd("-%m-%dT%H", s, c);
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}
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bool ParseCivilTime(string_view s, CivilDay* c) {
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return ParseYearAnd("-%m-%d", s, c);
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}
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bool ParseCivilTime(string_view s, CivilMonth* c) {
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return ParseYearAnd("-%m", s, c);
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}
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bool ParseCivilTime(string_view s, CivilYear* c) {
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return ParseYearAnd("", s, c);
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}
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bool ParseLenientCivilTime(string_view s, CivilSecond* c) {
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return ParseLenient(s, c);
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}
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bool ParseLenientCivilTime(string_view s, CivilMinute* c) {
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return ParseLenient(s, c);
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}
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bool ParseLenientCivilTime(string_view s, CivilHour* c) {
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return ParseLenient(s, c);
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}
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bool ParseLenientCivilTime(string_view s, CivilDay* c) {
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return ParseLenient(s, c);
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}
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bool ParseLenientCivilTime(string_view s, CivilMonth* c) {
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return ParseLenient(s, c);
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}
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bool ParseLenientCivilTime(string_view s, CivilYear* c) {
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return ParseLenient(s, c);
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}
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namespace time_internal {
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namespace time_internal {
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std::ostream& operator<<(std::ostream& os, CivilYear y) {
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std::ostream& operator<<(std::ostream& os, CivilYear y) {
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@ -459,6 +459,57 @@ std::string FormatCivilTime(CivilDay c);
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std::string FormatCivilTime(CivilMonth c);
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std::string FormatCivilTime(CivilMonth c);
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std::string FormatCivilTime(CivilYear c);
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std::string FormatCivilTime(CivilYear c);
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// absl::ParseCivilTime()
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//
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// Parses a civil-time value from the specified `absl::string_view` into the
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// passed output parameter. Returns `true` upon successful parsing.
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//
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// The expected form of the input string is as follows:
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//
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// Type | Format
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// ---------------------------------
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// CivilSecond | YYYY-MM-DDTHH:MM:SS
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// CivilMinute | YYYY-MM-DDTHH:MM
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// CivilHour | YYYY-MM-DDTHH
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// CivilDay | YYYY-MM-DD
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// CivilMonth | YYYY-MM
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// CivilYear | YYYY
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//
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// Example:
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//
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// absl::CivilDay d;
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// bool ok = absl::ParseCivilTime("2018-01-02", &d); // OK
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//
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// Note that parsing will fail if the string's format does not match the
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// expected type exactly. `ParseLenientCivilTime()` below is more lenient.
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//
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bool ParseCivilTime(absl::string_view s, CivilSecond* c);
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bool ParseCivilTime(absl::string_view s, CivilMinute* c);
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bool ParseCivilTime(absl::string_view s, CivilHour* c);
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bool ParseCivilTime(absl::string_view s, CivilDay* c);
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bool ParseCivilTime(absl::string_view s, CivilMonth* c);
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bool ParseCivilTime(absl::string_view s, CivilYear* c);
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// ParseLenientCivilTime()
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//
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// Parses any of the formats accepted by `absl::ParseCivilTime()`, but is more
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// lenient if the format of the string does not exactly match the associated
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// type.
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//
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// Example:
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//
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// absl::CivilDay d;
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// bool ok = absl::ParseLenientCivilTime("1969-07-20", &d); // OK
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// ok = absl::ParseLenientCivilTime("1969-07-20T10", &d); // OK: T10 floored
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// ok = absl::ParseLenientCivilTime("1969-07", &d); // OK: day defaults to 1
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//
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bool ParseLenientCivilTime(absl::string_view s, CivilSecond* c);
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bool ParseLenientCivilTime(absl::string_view s, CivilMinute* c);
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bool ParseLenientCivilTime(absl::string_view s, CivilHour* c);
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bool ParseLenientCivilTime(absl::string_view s, CivilDay* c);
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bool ParseLenientCivilTime(absl::string_view s, CivilMonth* c);
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bool ParseLenientCivilTime(absl::string_view s, CivilYear* c);
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namespace time_internal { // For functions found via ADL on civil-time tags.
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namespace time_internal { // For functions found via ADL on civil-time tags.
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// Streaming Operators
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// Streaming Operators
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@ -66,6 +66,26 @@ void BM_Format(benchmark::State& state) {
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}
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}
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BENCHMARK(BM_Format);
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BENCHMARK(BM_Format);
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void BM_Parse(benchmark::State& state) {
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const std::string f = "2014-01-02T03:04:05";
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absl::CivilSecond c;
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while (state.KeepRunning()) {
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const bool b = absl::ParseCivilTime(f, &c);
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benchmark::DoNotOptimize(b);
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}
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}
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BENCHMARK(BM_Parse);
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void BM_RoundTripFormatParse(benchmark::State& state) {
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const absl::CivilSecond c(2014, 1, 2, 3, 4, 5);
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absl::CivilSecond out;
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while (state.KeepRunning()) {
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const bool b = absl::ParseCivilTime(absl::FormatCivilTime(c), &out);
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benchmark::DoNotOptimize(b);
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}
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}
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BENCHMARK(BM_RoundTripFormatParse);
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template <typename T>
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template <typename T>
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void BM_CivilTimeAbslHash(benchmark::State& state) {
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void BM_CivilTimeAbslHash(benchmark::State& state) {
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const int kSize = 100000;
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const int kSize = 100000;
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@ -690,6 +690,69 @@ TEST(CivilTime, Format) {
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EXPECT_EQ("1970", absl::FormatCivilTime(y));
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EXPECT_EQ("1970", absl::FormatCivilTime(y));
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}
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}
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TEST(CivilTime, Parse) {
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absl::CivilSecond ss;
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absl::CivilMinute mm;
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absl::CivilHour hh;
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absl::CivilDay d;
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absl::CivilMonth m;
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absl::CivilYear y;
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// CivilSecond OK; others fail
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EXPECT_TRUE(absl::ParseCivilTime("2015-01-02T03:04:05", &ss));
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EXPECT_EQ("2015-01-02T03:04:05", absl::FormatCivilTime(ss));
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EXPECT_FALSE(absl::ParseCivilTime("2015-01-02T03:04:05", &mm));
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EXPECT_FALSE(absl::ParseCivilTime("2015-01-02T03:04:05", &hh));
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EXPECT_FALSE(absl::ParseCivilTime("2015-01-02T03:04:05", &d));
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EXPECT_FALSE(absl::ParseCivilTime("2015-01-02T03:04:05", &m));
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EXPECT_FALSE(absl::ParseCivilTime("2015-01-02T03:04:05", &y));
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// CivilMinute OK; others fail
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EXPECT_FALSE(absl::ParseCivilTime("2015-01-02T03:04", &ss));
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EXPECT_TRUE(absl::ParseCivilTime("2015-01-02T03:04", &mm));
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EXPECT_EQ("2015-01-02T03:04", absl::FormatCivilTime(mm));
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EXPECT_FALSE(absl::ParseCivilTime("2015-01-02T03:04", &hh));
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EXPECT_FALSE(absl::ParseCivilTime("2015-01-02T03:04", &d));
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EXPECT_FALSE(absl::ParseCivilTime("2015-01-02T03:04", &m));
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EXPECT_FALSE(absl::ParseCivilTime("2015-01-02T03:04", &y));
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// CivilHour OK; others fail
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EXPECT_FALSE(absl::ParseCivilTime("2015-01-02T03", &ss));
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EXPECT_FALSE(absl::ParseCivilTime("2015-01-02T03", &mm));
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EXPECT_TRUE(absl::ParseCivilTime("2015-01-02T03", &hh));
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EXPECT_EQ("2015-01-02T03", absl::FormatCivilTime(hh));
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EXPECT_FALSE(absl::ParseCivilTime("2015-01-02T03", &d));
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EXPECT_FALSE(absl::ParseCivilTime("2015-01-02T03", &m));
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EXPECT_FALSE(absl::ParseCivilTime("2015-01-02T03", &y));
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// CivilDay OK; others fail
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EXPECT_FALSE(absl::ParseCivilTime("2015-01-02", &ss));
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EXPECT_FALSE(absl::ParseCivilTime("2015-01-02", &mm));
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EXPECT_FALSE(absl::ParseCivilTime("2015-01-02", &hh));
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EXPECT_TRUE(absl::ParseCivilTime("2015-01-02", &d));
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EXPECT_EQ("2015-01-02", absl::FormatCivilTime(d));
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EXPECT_FALSE(absl::ParseCivilTime("2015-01-02", &m));
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EXPECT_FALSE(absl::ParseCivilTime("2015-01-02", &y));
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// CivilMonth OK; others fail
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EXPECT_FALSE(absl::ParseCivilTime("2015-01", &ss));
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EXPECT_FALSE(absl::ParseCivilTime("2015-01", &mm));
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EXPECT_FALSE(absl::ParseCivilTime("2015-01", &hh));
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EXPECT_FALSE(absl::ParseCivilTime("2015-01", &d));
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EXPECT_TRUE(absl::ParseCivilTime("2015-01", &m));
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EXPECT_EQ("2015-01", absl::FormatCivilTime(m));
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EXPECT_FALSE(absl::ParseCivilTime("2015-01", &y));
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// CivilYear OK; others fail
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EXPECT_FALSE(absl::ParseCivilTime("2015", &ss));
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EXPECT_FALSE(absl::ParseCivilTime("2015", &mm));
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EXPECT_FALSE(absl::ParseCivilTime("2015", &hh));
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EXPECT_FALSE(absl::ParseCivilTime("2015", &d));
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EXPECT_FALSE(absl::ParseCivilTime("2015", &m));
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EXPECT_TRUE(absl::ParseCivilTime("2015", &y));
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EXPECT_EQ("2015", absl::FormatCivilTime(y));
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}
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TEST(CivilTime, FormatAndParseLenient) {
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TEST(CivilTime, FormatAndParseLenient) {
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absl::CivilSecond ss;
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absl::CivilSecond ss;
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EXPECT_EQ("1970-01-01T00:00:00", absl::FormatCivilTime(ss));
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EXPECT_EQ("1970-01-01T00:00:00", absl::FormatCivilTime(ss));
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absl::CivilYear y;
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absl::CivilYear y;
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EXPECT_EQ("1970", absl::FormatCivilTime(y));
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EXPECT_EQ("1970", absl::FormatCivilTime(y));
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EXPECT_TRUE(absl::ParseLenientCivilTime("2015-01-02T03:04:05", &ss));
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EXPECT_EQ("2015-01-02T03:04:05", absl::FormatCivilTime(ss));
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EXPECT_TRUE(absl::ParseLenientCivilTime("2015-01-02T03:04:05", &mm));
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EXPECT_EQ("2015-01-02T03:04", absl::FormatCivilTime(mm));
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EXPECT_TRUE(absl::ParseLenientCivilTime("2015-01-02T03:04:05", &hh));
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EXPECT_EQ("2015-01-02T03", absl::FormatCivilTime(hh));
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EXPECT_TRUE(absl::ParseLenientCivilTime("2015-01-02T03:04:05", &d));
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EXPECT_EQ("2015-01-02", absl::FormatCivilTime(d));
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EXPECT_TRUE(absl::ParseLenientCivilTime("2015-01-02T03:04:05", &m));
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EXPECT_EQ("2015-01", absl::FormatCivilTime(m));
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EXPECT_TRUE(absl::ParseLenientCivilTime("2015-01-02T03:04:05", &y));
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EXPECT_EQ("2015", absl::FormatCivilTime(y));
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}
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TEST(CivilTime, ParseEdgeCases) {
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absl::CivilSecond ss;
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EXPECT_TRUE(
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absl::ParseLenientCivilTime("9223372036854775807-12-31T23:59:59", &ss));
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EXPECT_EQ("9223372036854775807-12-31T23:59:59", absl::FormatCivilTime(ss));
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EXPECT_TRUE(
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absl::ParseLenientCivilTime("-9223372036854775808-01-01T00:00:00", &ss));
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EXPECT_EQ("-9223372036854775808-01-01T00:00:00", absl::FormatCivilTime(ss));
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absl::CivilMinute mm;
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EXPECT_TRUE(
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absl::ParseLenientCivilTime("9223372036854775807-12-31T23:59", &mm));
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EXPECT_EQ("9223372036854775807-12-31T23:59", absl::FormatCivilTime(mm));
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EXPECT_TRUE(
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absl::ParseLenientCivilTime("-9223372036854775808-01-01T00:00", &mm));
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EXPECT_EQ("-9223372036854775808-01-01T00:00", absl::FormatCivilTime(mm));
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absl::CivilHour hh;
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EXPECT_TRUE(
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absl::ParseLenientCivilTime("9223372036854775807-12-31T23", &hh));
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EXPECT_EQ("9223372036854775807-12-31T23", absl::FormatCivilTime(hh));
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|
EXPECT_TRUE(
|
||||||
|
absl::ParseLenientCivilTime("-9223372036854775808-01-01T00", &hh));
|
||||||
|
EXPECT_EQ("-9223372036854775808-01-01T00", absl::FormatCivilTime(hh));
|
||||||
|
|
||||||
|
absl::CivilDay d;
|
||||||
|
EXPECT_TRUE(absl::ParseLenientCivilTime("9223372036854775807-12-31", &d));
|
||||||
|
EXPECT_EQ("9223372036854775807-12-31", absl::FormatCivilTime(d));
|
||||||
|
EXPECT_TRUE(absl::ParseLenientCivilTime("-9223372036854775808-01-01", &d));
|
||||||
|
EXPECT_EQ("-9223372036854775808-01-01", absl::FormatCivilTime(d));
|
||||||
|
|
||||||
|
absl::CivilMonth m;
|
||||||
|
EXPECT_TRUE(absl::ParseLenientCivilTime("9223372036854775807-12", &m));
|
||||||
|
EXPECT_EQ("9223372036854775807-12", absl::FormatCivilTime(m));
|
||||||
|
EXPECT_TRUE(absl::ParseLenientCivilTime("-9223372036854775808-01", &m));
|
||||||
|
EXPECT_EQ("-9223372036854775808-01", absl::FormatCivilTime(m));
|
||||||
|
|
||||||
|
absl::CivilYear y;
|
||||||
|
EXPECT_TRUE(absl::ParseLenientCivilTime("9223372036854775807", &y));
|
||||||
|
EXPECT_EQ("9223372036854775807", absl::FormatCivilTime(y));
|
||||||
|
EXPECT_TRUE(absl::ParseLenientCivilTime("-9223372036854775808", &y));
|
||||||
|
EXPECT_EQ("-9223372036854775808", absl::FormatCivilTime(y));
|
||||||
|
|
||||||
|
// Tests some valid, but interesting, cases
|
||||||
|
EXPECT_TRUE(absl::ParseLenientCivilTime("0", &ss)) << ss;
|
||||||
|
EXPECT_EQ(absl::CivilYear(0), ss);
|
||||||
|
EXPECT_TRUE(absl::ParseLenientCivilTime("0-1", &ss)) << ss;
|
||||||
|
EXPECT_EQ(absl::CivilMonth(0, 1), ss);
|
||||||
|
EXPECT_TRUE(absl::ParseLenientCivilTime(" 2015 ", &ss)) << ss;
|
||||||
|
EXPECT_EQ(absl::CivilYear(2015), ss);
|
||||||
|
EXPECT_TRUE(absl::ParseLenientCivilTime(" 2015-6 ", &ss)) << ss;
|
||||||
|
EXPECT_EQ(absl::CivilMonth(2015, 6), ss);
|
||||||
|
EXPECT_TRUE(absl::ParseLenientCivilTime("2015-6-7", &ss)) << ss;
|
||||||
|
EXPECT_EQ(absl::CivilDay(2015, 6, 7), ss);
|
||||||
|
EXPECT_TRUE(absl::ParseLenientCivilTime(" 2015-6-7 ", &ss)) << ss;
|
||||||
|
EXPECT_EQ(absl::CivilDay(2015, 6, 7), ss);
|
||||||
|
EXPECT_TRUE(absl::ParseLenientCivilTime("2015-06-07T10:11:12 ", &ss)) << ss;
|
||||||
|
EXPECT_EQ(absl::CivilSecond(2015, 6, 7, 10, 11, 12), ss);
|
||||||
|
EXPECT_TRUE(absl::ParseLenientCivilTime(" 2015-06-07T10:11:12 ", &ss)) << ss;
|
||||||
|
EXPECT_EQ(absl::CivilSecond(2015, 6, 7, 10, 11, 12), ss);
|
||||||
|
EXPECT_TRUE(absl::ParseLenientCivilTime("-01-01", &ss)) << ss;
|
||||||
|
EXPECT_EQ(absl::CivilMonth(-1, 1), ss);
|
||||||
|
|
||||||
|
// Tests some invalid cases
|
||||||
|
EXPECT_FALSE(absl::ParseLenientCivilTime("01-01-2015", &ss)) << ss;
|
||||||
|
EXPECT_FALSE(absl::ParseLenientCivilTime("2015-", &ss)) << ss;
|
||||||
|
EXPECT_FALSE(absl::ParseLenientCivilTime("0xff-01", &ss)) << ss;
|
||||||
|
EXPECT_FALSE(absl::ParseLenientCivilTime("2015-02-30T04:05:06", &ss)) << ss;
|
||||||
|
EXPECT_FALSE(absl::ParseLenientCivilTime("2015-02-03T04:05:96", &ss)) << ss;
|
||||||
|
EXPECT_FALSE(absl::ParseLenientCivilTime("X2015-02-03T04:05:06", &ss)) << ss;
|
||||||
|
EXPECT_FALSE(absl::ParseLenientCivilTime("2015-02-03T04:05:003", &ss)) << ss;
|
||||||
|
EXPECT_FALSE(absl::ParseLenientCivilTime("2015 -02-03T04:05:06", &ss)) << ss;
|
||||||
|
EXPECT_FALSE(absl::ParseLenientCivilTime("2015-02-03-04:05:06", &ss)) << ss;
|
||||||
|
EXPECT_FALSE(absl::ParseLenientCivilTime("2015:02:03T04-05-06", &ss)) << ss;
|
||||||
|
EXPECT_FALSE(absl::ParseLenientCivilTime("9223372036854775808", &y)) << y;
|
||||||
}
|
}
|
||||||
|
|
||||||
TEST(CivilTime, OutputStream) {
|
TEST(CivilTime, OutputStream) {
|
||||||
|
|
Loading…
Reference in a new issue