Orkuncakilkaya
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Implement the calendar/clock half of #9 as plain-i32 integer epochs — no new type, no floating point (the issue's "integer epochs to avoid drift") — so every operation is deterministic and bit-identical on every platform: Duration — a span in whole seconds; seconds/minutes/hours/days build one, as_seconds/as_minutes/as_hours/as_days read it back. Because a duration is just an int, `+` and `>` work with no extra machinery (Duration.minutes(5) + Duration.seconds(30), away > Duration.hours(3)). Date — a civil day as days-since-1970 (UTC): new/year/month/day/weekday/ is_leap/days_in_month/to_epoch/add_days/diff_days. DateTime — an instant as seconds-since-1970 (UTC, matching Time.now): from/date/add/year/month/day/weekday/hour/minute/second. Time.since(past) = now - past, for offline-progress / "time away" checks. New selfhost/emit_datetime.ludic (is_/emit_ for the three namespaces, wired into emit_ns_call + the frag list). The two civil<->epoch conversions are Howard Hinnant's public-domain proleptic-Gregorian algorithms, emitted once per program as the @fn_days_from_civil / @fn_civil_from_days prelude and gated by g_uses_datert; days_in_month is next-month-day-0 (no lookup table). Time gains `since`. Docs (Duration/Date/DateTime sections, 28 method pages + time-since), inventory, and LSP hover kept in sync; a registered test checks component math against hand-computed values. Reseeded; C-free fixpoint holds; all suites green (26 self-host / 45 regression / 29 tools); check.py, check-impl.py and validate.py OK. format/parse, a game-controlled simulated clock, and timezones are tracked follow-ups; v1 is UTC-only and, on the i32 epoch, valid through 2038. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
571 B
571 B
| id | title | order |
|---|---|---|
| datetime | DateTime | 6 |
Instants on the wall-clock timeline (UTC), stored as a plain int: the count of seconds since 1970-01-01, matching Time.now. Build one with DateTime.from, shift it by a Duration with DateTime.add, and pull it apart with the year/month/day/hour/minute/second readers. Deterministic integer math throughout; v1 is UTC-only with no leap seconds, and assumes instants at or after 1970.