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feat(stdlib): Time/Date/Duration calendar-clock core (issue #9)
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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>
This commit is contained in:
Orkun ÇAKILKAYA 2026-08-30 03:37:38 +03:00
parent 121053e179
commit 1a2c6ec2c7
43 changed files with 10670 additions and 7626 deletions
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35
tools/ludic-tools/lsp.ludic
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@ -1401,6 +1401,41 @@ program LudicLsp {
if (meth == "delta") { return "Time.delta() -> fixed" }
if (meth == "elapsed") { return "Time.elapsed() -> fixed" }
if (meth == "now") { return "Time.now() -> int" }
if (meth == "since") { return "Time.since(past) -> int" }
}
if (ns == "Duration") {
if (meth == "seconds") { return "Duration.seconds(n) -> int" }
if (meth == "minutes") { return "Duration.minutes(n) -> int" }
if (meth == "hours") { return "Duration.hours(n) -> int" }
if (meth == "days") { return "Duration.days(n) -> int" }
if (meth == "as_seconds") { return "Duration.as_seconds(span) -> int" }
if (meth == "as_minutes") { return "Duration.as_minutes(span) -> int" }
if (meth == "as_hours") { return "Duration.as_hours(span) -> int" }
if (meth == "as_days") { return "Duration.as_days(span) -> int" }
}
if (ns == "Date") {
if (meth == "new") { return "Date.new(year, month, day) -> int" }
if (meth == "year") { return "Date.year(date) -> int" }
if (meth == "month") { return "Date.month(date) -> int" }
if (meth == "day") { return "Date.day(date) -> int" }
if (meth == "weekday") { return "Date.weekday(date) -> int" }
if (meth == "is_leap") { return "Date.is_leap(year) -> bool" }
if (meth == "days_in_month") { return "Date.days_in_month(year, month) -> int" }
if (meth == "to_epoch") { return "Date.to_epoch(date) -> int" }
if (meth == "add_days") { return "Date.add_days(date, n) -> int" }
if (meth == "diff_days") { return "Date.diff_days(a, b) -> int" }
}
if (ns == "DateTime") {
if (meth == "from") { return "DateTime.from(year, month, day, hour, minute, second) -> int" }
if (meth == "date") { return "DateTime.date(dt) -> int" }
if (meth == "add") { return "DateTime.add(dt, span) -> int" }
if (meth == "year") { return "DateTime.year(dt) -> int" }
if (meth == "month") { return "DateTime.month(dt) -> int" }
if (meth == "day") { return "DateTime.day(dt) -> int" }
if (meth == "weekday") { return "DateTime.weekday(dt) -> int" }
if (meth == "hour") { return "DateTime.hour(dt) -> int" }
if (meth == "minute") { return "DateTime.minute(dt) -> int" }
if (meth == "second") { return "DateTime.second(dt) -> int" }
}
if (ns == "Memory") {
if (meth == "bytes") { return "Memory.bytes(n) -> pointer" }