f99b94865f
This adds the operator<< overloads and std::formatter specializations required by C++20 so that <chrono> types can be written to ostreams and printed with std::format. libstdc++-v3/ChangeLog: * include/Makefile.am: Add new header. * include/Makefile.in: Regenerate. * include/std/chrono (operator<<): Move to new header. (nonexistent_local_time::_M_make_what_str): Define correctly. (ambiguous_local_time::_M_make_what_str): Likewise. * include/bits/chrono_io.h: New file. * src/c++20/tzdb.cc (operator<<(ostream&, const Rule&)): Use new ostream output for month and weekday types. * testsuite/20_util/duration/io.cc: Test std::format support. * testsuite/std/time/exceptions.cc: Check what() strings. * testsuite/std/time/syn_c++20.cc: Uncomment local_time_format. * testsuite/std/time/time_zone/get_info_local.cc: Enable check for formatted output of local_info objects. * testsuite/std/time/clock/file/io.cc: New test. * testsuite/std/time/clock/gps/io.cc: New test. * testsuite/std/time/clock/system/io.cc: New test. * testsuite/std/time/clock/tai/io.cc: New test. * testsuite/std/time/clock/utc/io.cc: New test. * testsuite/std/time/day/io.cc: New test. * testsuite/std/time/format.cc: New test. * testsuite/std/time/hh_mm_ss/io.cc: New test. * testsuite/std/time/month/io.cc: New test. * testsuite/std/time/weekday/io.cc: New test. * testsuite/std/time/year/io.cc: New test. * testsuite/std/time/year_month_day/io.cc: New test.
120 lines
3.4 KiB
C++
120 lines
3.4 KiB
C++
// { dg-options "-std=gnu++20" }
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// { dg-do run { target c++20 } }
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#include <chrono>
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#include <sstream>
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#include <testsuite_hooks.h>
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void
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test_ostream()
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{
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using std::ostringstream;
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using namespace std::chrono;
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auto t = sys_days{July/1/2015} - 500ms;
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auto u = clock_cast<utc_clock>(t);
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std::string_view results[] = {
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"2015-06-30 23:59:59.500 UTC",
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"2015-06-30 23:59:59.750 UTC",
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"2015-06-30 23:59:60.000 UTC",
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"2015-06-30 23:59:60.250 UTC",
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"2015-06-30 23:59:60.500 UTC",
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"2015-06-30 23:59:60.750 UTC",
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"2015-07-01 00:00:00.000 UTC",
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"2015-07-01 00:00:00.250 UTC",
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};
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for (auto result : results)
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{
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ostringstream out;
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out << u << " UTC";
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VERIFY( out.str() == result );
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u += 250ms;
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}
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}
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void
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test_format()
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{
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using namespace std::chrono_literals;
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std::chrono::utc_time<std::chrono::milliseconds> t(1671470812708ms);
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// Every conversion specifier is valid for a utc_time except %q and %Q.
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std::string_view specs = "aAbBcCdDeFgGhHIjmMpqQrRSTuUVwWxXyYzZ";
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std::string_view badspecs = "qQ";
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std::ostringstream ss;
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std::wostringstream wss;
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for (char c : specs)
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{
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char fmt[] = { '{', ':', '%', c, '}' };
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try
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{
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ss << std::vformat(std::string_view(fmt, 5),
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std::make_format_args(t));
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ss << " | ";
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// The call above should throw for any conversion-spec in badspecs:
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VERIFY(badspecs.find(c) == badspecs.npos);
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}
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catch (const std::format_error& e)
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{
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VERIFY(badspecs.find(c) != badspecs.npos);
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std::string_view s = e.what();
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// Libstdc++-specific message:
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VERIFY(s.find("format argument does not contain the information "
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"required by the chrono-specs") != s.npos);
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}
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wchar_t wfmt[] = { L'{', L':', L'%', c, L'}' };
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try
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{
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wss << std::vformat(std::wstring_view(wfmt, 5),
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std::make_wformat_args(t));
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wss << L" | ";
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// The call above should throw for any conversion-spec in badspecs:
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VERIFY(badspecs.find(c) == badspecs.npos);
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}
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catch (const std::format_error& e)
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{
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VERIFY(badspecs.find(c) != badspecs.npos);
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std::string_view s = e.what();
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// Libstdc++-specific message:
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VERIFY(s.find("format argument does not contain the information "
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"required by the chrono-specs") != s.npos);
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}
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}
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std::string s = ss.str();
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VERIFY( s == "Mon | Monday | Dec | December | Mon Dec 19 17:26:25.708 2022"
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" | 20 | 19 | 12/19/22 | 19 | 2022-12-19 | 22 | 2022 | Dec"
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" | 17 | 05 | 353 | 12 | 26 | PM | 05:26:25.708 PM | 17:26"
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" | 25.708 | 17:26:25.708 | 1 | 51 | 51 | 1 | 51 | 12/19/22"
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" | 17:26:25.708 | 22 | 2022 | +0000 | UTC | " );
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std::wstring ws = wss.str();
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VERIFY( ws == L"Mon | Monday | Dec | December | Mon Dec 19 17:26:25.708 2022"
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" | 20 | 19 | 12/19/22 | 19 | 2022-12-19 | 22 | 2022 | Dec"
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" | 17 | 05 | 353 | 12 | 26 | PM | 05:26:25.708 PM | 17:26"
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" | 25.708 | 17:26:25.708 | 1 | 51 | 51 | 1 | 51 | 12/19/22"
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" | 17:26:25.708 | 22 | 2022 | +0000 | UTC | " );
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std::chrono::utc_seconds leap(1483228800s + 26s); // 1 Jan 2017
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s = std::format("{:%T}", leap - 1s);
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VERIFY( s == "23:59:59" );
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s = std::format("{:%T}", leap);
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VERIFY( s == "23:59:60" );
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s = std::format("{:%T}", leap + 10ms);
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VERIFY( s == "23:59:60.010" );
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s = std::format("{:%T}", leap + 1s);
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VERIFY( s == "00:00:00" );
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}
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int main()
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{
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test_ostream();
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test_format();
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}
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