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2d03d330bc
The Year 1925 is a starting point because most of the timezones switched to saner (mostly 15-minutes based) offsets somewhere during 1924 or before. And that significantly simplifies implementation. 2238 is to simplify arithmetics for sanitizing LUT index access; there are less than 0x1ffff days from 1925. * Extended DateLUTImpl internal LUT to 0x1ffff items, some of which represent negative (pre-1970) time values. As a collateral benefit, Date now correctly supports dates up to 2149 (instead of 2106). * Added a new strong typedef ExtendedDayNum, which represents dates pre-1970 and post 2149. * Functions that used to return DayNum now return ExtendedDayNum. * Refactored DateLUTImpl to untie DayNum from the dual role of being a value and an index (due to negative time). Index is now a different type LUTIndex with explicit conversion functions from DatNum, time_t, and ExtendedDayNum. * Updated DateLUTImpl to properly support values close to epoch start (1970-01-01 00:00), including negative ones. * Reduced resolution of DateLUTImpl::Values::time_at_offset_change to multiple of 15-minutes to allow storing 64-bits of time_t in DateLUTImpl::Value while keeping same size. * Minor performance updates to DateLUTImpl when building month LUT by skipping non-start-of-month days. * Fixed extractTimeZoneFromFunctionArguments to work correctly with DateTime64. * New unit-tests and stateless integration tests for both DateTime and DateTime64. |
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| .. | ||
| tests | ||
| argsToConfig.cpp | ||
| argsToConfig.h | ||
| arithmeticOverflow.h | ||
| CMakeLists.txt | ||
| constexpr_helpers.h | ||
| coverage.cpp | ||
| coverage.h | ||
| DateLUT.cpp | ||
| DateLUT.h | ||
| DateLUTImpl.cpp | ||
| DateLUTImpl.h | ||
| DayNum.h | ||
| defines.h | ||
| demangle.cpp | ||
| demangle.h | ||
| errnoToString.cpp | ||
| errnoToString.h | ||
| ErrorHandlers.h | ||
| extended_types.h | ||
| find_symbols.h | ||
| getFQDNOrHostName.cpp | ||
| getFQDNOrHostName.h | ||
| getMemoryAmount.cpp | ||
| getMemoryAmount.h | ||
| getPageSize.cpp | ||
| getPageSize.h | ||
| getResource.cpp | ||
| getResource.h | ||
| getThreadId.cpp | ||
| getThreadId.h | ||
| iostream_debug_helpers.h | ||
| itoa.h | ||
| JSON.cpp | ||
| JSON.h | ||
| LineReader.cpp | ||
| LineReader.h | ||
| LocalDate.h | ||
| LocalDateTime.h | ||
| logger_useful.h | ||
| memory.h | ||
| mremap.cpp | ||
| mremap.h | ||
| phdr_cache.cpp | ||
| phdr_cache.h | ||
| preciseExp10.cpp | ||
| preciseExp10.h | ||
| ReadlineLineReader.cpp | ||
| ReadlineLineReader.h | ||
| ReplxxLineReader.cpp | ||
| ReplxxLineReader.h | ||
| setTerminalEcho.cpp | ||
| setTerminalEcho.h | ||
| shift10.cpp | ||
| shift10.h | ||
| SimpleCache.h | ||
| sleep.cpp | ||
| sleep.h | ||
| sort.h | ||
| StringRef.cpp | ||
| StringRef.h | ||
| strong_typedef.h | ||
| terminalColors.cpp | ||
| terminalColors.h | ||
| throwError.h | ||
| time.h | ||
| types.h | ||
| unaligned.h | ||
| wide_integer_impl.h | ||
| wide_integer_to_string.h | ||
| wide_integer.h | ||
| ya.make | ||
| ya.make.in | ||