1 ! Copyright (C) 2007 Doug Coleman.
2 ! See https://factorcode.org/license.txt for BSD license.
3 USING: accessors arrays classes.tuple combinators
4 combinators.short-circuit kernel literals math math.functions
5 math.intervals math.order math.statistics sequences slots.syntax
6 system vocabs vocabs.loader ;
7 FROM: ranges => [a..b) ;
10 ERROR: not-in-interval value interval ;
12 : check-interval ( value interval -- value )
13 2dup interval-contains? [ drop ] [ not-in-interval ] if ;
15 HOOK: gmt-offset os ( -- hours minutes seconds )
17 ALIAS: utc-offset gmt-offset
19 HOOK: now-gmt os ( -- timestamp )
21 ALIAS: now-utc now-gmt
31 C: <duration> duration
33 : instant ( -- duration ) 0 0 0 0 0 0 <duration> ;
42 { gmt-offset duration } ;
46 CONSTANT: day-counts { 0 31 28 31 30 31 30 31 31 30 31 30 31 }
48 CONSTANT: cumulative-day-counts $[ day-counts cum-sum0 ]
52 GENERIC: leap-year? ( obj -- ? )
55 dup 100 divisor? 400 4 ? divisor? ;
57 M: timestamp leap-year?
60 : (days-in-month) ( year month -- n )
61 dup 2 = [ drop leap-year? 29 28 ? ] [ nip day-counts nth ] if ;
63 :: <timestamp> ( $year $month $day $hour $minute $second $gmt-offset -- timestamp )
65 $month 1 12 [a,b] check-interval
66 $day 1 $year $month (days-in-month) [a,b] check-interval
67 $hour 0 23 [a,b] check-interval
68 $minute 0 59 [a,b] check-interval
69 $second 0 60 [a,b) check-interval
70 $gmt-offset timestamp boa ;
72 M: timestamp clone (clone) [ clone ] change-gmt-offset ;
74 : gmt-offset-duration ( -- duration )
75 0 0 0 gmt-offset <duration> ; inline
77 : <date> ( year month day -- timestamp )
78 0 0 0 gmt-offset-duration <timestamp> ; inline
80 : <date-gmt> ( year month day -- timestamp )
81 0 0 0 instant <timestamp> ; inline
83 ALIAS: <date-utc> <date-gmt>
85 : <year> ( year -- timestamp )
88 : <year-gmt> ( year -- timestamp )
89 1 1 <date-gmt> ; inline
91 ALIAS: <year-utc> <year-gmt>
93 CONSTANT: average-month 30+5/12
94 CONSTANT: months-per-year 12
95 CONSTANT: days-per-year 3652425/10000
96 CONSTANT: hours-per-year 876582/100
97 CONSTANT: minutes-per-year 5259492/10
98 CONSTANT: seconds-per-year 31556952
100 :: julian-day-number ( $year $month $day -- n )
101 ! Returns a composite date number
102 ! Not valid before year -4800
103 14 $month - 12 /i :> $a
104 $year 4800 + $a - :> $y
105 $month 12 $a * + 3 - :> $m
107 $day 153 $m * 2 + 5 /i + 365 $y * +
108 $y 4 /i + $y 100 /i - $y 400 /i + 32045 - ;
110 :: julian-day-number>date ( $n -- year month day )
111 ! Inverse of julian-day-number
113 4 $a * 3 + 146097 /i :> $b
114 $a 146097 $b * 4 /i - :> $c
115 4 $c * 3 + 1461 /i :> $d
116 $c 1461 $d * 4 /i - :> $e
117 5 $e * 2 + 153 /i :> $m
122 $e 153 $m * 2 + 5 /i - 1 + ;
124 GENERIC: easter ( obj -- obj' )
126 :: easter-month-day ( $year -- month day )
128 $year 100 /mod :> ( $b $c )
129 $b 4 /mod :> ( $d $e )
131 $b $f - 1 + 3 /i :> $g
132 19 $a * $b + $d - $g - 15 + 30 mod :> $h
133 $c 4 /mod :> ( $i $k )
134 32 2 $e * + 2 $i * + $h - $k - 7 mod :> $l
135 $a 11 $h * + 22 $l * + 451 /i :> $m
137 $h $l + 7 $m * - 114 + 31 /mod 1 + ;
140 dup easter-month-day <date> ;
143 clone dup year>> easter-month-day
144 swapd >>day swap >>month ;
146 : >date< ( timestamp -- year month day )
147 [ year>> ] [ month>> ] [ day>> ] tri ;
149 : set-date ( timestamp year month day -- timestamp )
150 [ >>year ] [ >>month ] [ >>day ] tri* ;
152 : >time< ( timestamp -- hour minute second )
153 [ hour>> ] [ minute>> ] [ second>> ] tri ;
155 : set-time ( timestamp hour minute second -- timestamp )
156 [ >>hour ] [ >>minute ] [ >>second ] tri* ;
158 : years ( x -- duration ) instant swap >>year ;
159 : bienniums ( x -- duration ) instant swap 2 * >>year ;
160 : trienniums ( x -- duration ) instant swap 3 * >>year ;
161 : quadrenniums ( x -- duration ) instant swap 4 * >>year ;
162 : quinquenniums ( x -- duration ) instant swap 5 * >>year ;
163 : sexenniums ( x -- duration ) instant swap 6 * >>year ;
164 : septenniums ( x -- duration ) instant swap 7 * >>year ;
165 : octenniums ( x -- duration ) instant swap 8 * >>year ;
166 : novenniums ( x -- duration ) instant swap 9 * >>year ;
167 : lustrums ( x -- duration ) instant swap 5 * >>year ;
168 : decades ( x -- duration ) instant swap 10 * >>year ;
169 : indictions ( x -- duration ) instant swap 15 * >>year ;
170 : score ( x -- duration ) instant swap 20 * >>year ;
171 : jubilees ( x -- duration ) instant swap 50 * >>year ;
172 : centuries ( x -- duration ) instant swap 100 * >>year ;
173 : millennia ( x -- duration ) instant swap 1000 * >>year ;
174 : millenniums ( x -- duration ) instant swap 1000 * >>year ;
175 : kila-annum ( x -- duration ) instant swap 1000 * >>year ;
176 : mega-annum ( x -- duration ) instant swap 1,000,000 * >>year ;
177 : giga-annum ( x -- duration ) instant swap 1,000,000,000 * >>year ;
178 : ages ( x -- duration ) instant swap 1,000,000 * >>year ;
179 : epochs ( x -- duration ) instant swap 10,000,000 * >>year ;
180 : eras ( x -- duration ) instant swap 100,000,000 * >>year ;
181 : eons ( x -- duration ) instant swap 500,000,000 * >>year ;
182 : months ( x -- duration ) instant swap >>month ;
183 : days ( x -- duration ) instant swap >>day ;
184 : weeks ( x -- duration ) 7 * days ;
185 : fortnight ( x -- duration ) 14 * days ;
186 : hours ( x -- duration ) instant swap >>hour ;
187 : minutes ( x -- duration ) instant swap >>minute ;
188 : seconds ( x -- duration ) instant swap >>second ;
189 : milliseconds ( x -- duration ) 1000 / seconds ;
190 : microseconds ( x -- duration ) 1000000 / seconds ;
191 : nanoseconds ( x -- duration ) 1000000000 / seconds ;
197 GENERIC: +year ( timestamp x -- timestamp )
198 GENERIC: +month ( timestamp x -- timestamp )
199 GENERIC: +day ( timestamp x -- timestamp )
200 GENERIC: +hour ( timestamp x -- timestamp )
201 GENERIC: +minute ( timestamp x -- timestamp )
202 GENERIC: +second ( timestamp x -- timestamp )
204 : /rem ( f n -- q r )
205 ! q is positive or negative, r is positive from 0 <= r < n
206 [ /mod ] keep over 0 < [ + [ -1 + ] dip ] [ drop ] if ; inline
208 : float>whole-part ( float -- int float )
209 [ floor >integer ] keep over - ; inline
211 : adjust-leap-year ( timestamp -- timestamp )
213 { [ day>> 29 = ] [ month>> 2 = ] [ leap-year? not ] } 1&&
214 [ 3 >>month 1 >>day ] when ;
217 [ + ] curry change-year adjust-leap-year ;
220 float>whole-part swapd days-per-year * +day swap +year ;
222 : months/years ( n -- months years )
223 12 /rem [ 1 - 12 ] when-zero swap ; inline
227 over month>> + months/years
228 [ >>month dup days-in-month '[ _ min ] change-day ] dip +year
232 float>whole-part swapd average-month * +day swap +month ;
235 [ over >date< julian-day-number + julian-day-number>date set-date ] unless-zero ;
238 float>whole-part swapd 24 * +hour swap +day ;
240 : hours/days ( n -- hours days )
241 24 /rem swap ; inline
244 [ over hour>> + hours/days [ >>hour ] dip +day ] unless-zero ;
247 float>whole-part swapd 60 * +minute swap +hour ;
249 : minutes/hours ( n -- minutes hours )
250 60 /rem swap ; inline
253 [ over minute>> + minutes/hours [ >>minute ] dip +hour ] unless-zero ;
256 float>whole-part swapd 60 * +second swap +minute ;
258 : seconds/minutes ( n -- seconds minutes )
259 60 /rem swap ; inline
262 [ over second>> + seconds/minutes [ >>second ] dip +minute ] unless-zero ;
264 : (time+) ( timestamp duration -- timestamp )
276 GENERIC#: time+ 1 ( time1 time2 -- time3 )
278 M: timestamp time+ [ clone ] dip (time+) ;
280 : duration+ ( duration1 duration2 -- duration3 )
283 [ [ month>> ] bi@ + ]
286 [ [ minute>> ] bi@ + ]
287 [ [ second>> ] bi@ + ]
288 } 2cleave <duration> ; inline
291 dup timestamp? [ swap time+ ] [ duration+ ] if ;
293 : duration>years ( duration -- x )
294 ! Uses average month/year length since duration loses calendar data
298 [ month>> months-per-year / + ]
299 [ day>> days-per-year / + ]
300 [ hour>> hours-per-year / + ]
301 [ minute>> minutes-per-year / + ]
302 [ second>> seconds-per-year / + ]
305 M: duration <=> [ duration>years ] compare ;
307 : duration>months ( duration -- x ) duration>years months-per-year * ;
308 : duration>days ( duration -- x ) duration>years days-per-year * ;
309 : duration>hours ( duration -- x ) duration>years hours-per-year * ;
310 : duration>minutes ( duration -- x ) duration>years minutes-per-year * ;
311 : duration>seconds ( duration -- x ) duration>years seconds-per-year * ;
312 : duration>milliseconds ( duration -- x ) duration>seconds 1000 * ;
313 : duration>microseconds ( duration -- x ) duration>seconds 1000000 * ;
314 : duration>nanoseconds ( duration -- x ) duration>seconds 1000000000 * ;
318 : gmt ( timestamp -- timestamp )
319 instant >>gmt-offset ; inline
321 : local-time ( timestamp -- timestamp )
322 gmt-offset-duration >>gmt-offset ; inline
324 : convert-timezone ( timestamp duration -- timestamp )
325 [ over gmt-offset>> time- (time+) ] [ >>gmt-offset ] bi ;
327 : convert-local-time ( timestamp -- timestamp )
328 gmt-offset-duration convert-timezone ;
330 : convert-gmt ( timestamp -- timestamp )
331 instant convert-timezone ;
333 : >local-time ( timestamp -- timestamp' )
334 clone convert-local-time ;
336 : >gmt ( timestamp -- timestamp' )
339 : >timezone ( timestamp duration -- timestamp' )
340 [ clone ] [ convert-timezone ] bi* ;
343 ALIAS: convert-utc convert-gmt
346 M: timestamp <=> [ >gmt tuple-slots ] compare ;
348 : same-year? ( ts1 ts2 -- ? )
349 [ year>> ] bi@ = ; inline
351 : quarter ( timestamp -- [1,4] )
352 month>> 3 /mod [ drop 1 + ] unless-zero ; inline
354 : same-quarter? ( ts1 ts2 -- ? )
355 [ [ year>> ] [ quarter ] bi 2array ] same? ;
357 : same-month? ( ts1 ts2 -- ? )
358 [ slots{ year month } ] same? ;
360 :: (day-of-year) ( $year $month $day -- n )
361 $month cumulative-day-counts nth $day + {
366 : day-of-year ( timestamp -- n )
367 >date< (day-of-year) ;
369 : same-day? ( ts1 ts2 -- ? )
370 [ slots{ year month day } ] same? ;
372 : same-day-of-year? ( ts1 ts2 -- ? )
373 [ slots{ month day } ] same? ;
375 : (day-of-week) ( year month day -- n )
377 ! https://web.textfiles.com/computers/formulas.txt
378 ! good for any date since October 15, 1582
380 dup 2 <= [ [ 1 - ] [ 12 + ] bi* ] when
381 [ dup [ 4 /i + ] [ 100 /i - ] [ 400 /i + ] tri ] dip
382 [ 1 + 3 * 5 /i + ] keep 2 * +
385 : day-of-week ( timestamp -- n )
386 >date< (day-of-week) ;
388 : (week-number) ( timestamp -- [0,53] )
389 [ day-of-year ] [ day-of-week [ 7 ] when-zero ] bi - 10 + 7 /i ;
393 : week-number ( timestamp -- [1,53] )
395 { 0 [ year>> 1 - end-of-year (week-number) ] }
396 { 53 [ year>> 1 + <year> (week-number) 1 = 1 53 ? ] }
400 : same-week? ( ts1 ts2 -- ? )
401 [ [ year>> ] [ week-number ] bi 2array ] same? ;
403 : same-hour? ( ts1 ts2 -- ? )
404 [ >gmt slots{ year month day hour } ] same? ;
406 : same-minute? ( ts1 ts2 -- ? )
407 [ >gmt slots{ year month day hour minute } ] same? ;
409 : same-second? ( ts1 ts2 -- ? )
412 [ [ second>> floor ] bi@ = ]
413 [ [ slots{ year month day hour minute } ] same? ]
418 : (time-) ( timestamp timestamp -- n )
419 [ [ >date< julian-day-number ] bi@ - 86400 * ]
420 [ [ >time< [ 3600 * ] [ 60 * + ] [ + ] tri* ] bi@ - + ]
421 [ [ gmt-offset>> duration>seconds ] bi@ swap - + ] 2tri ;
425 GENERIC: time- ( time1 time2 -- time3 )
428 ! Exact calendar-time difference
431 : duration* ( obj1 obj2 -- obj3 )
432 dup real? [ swap ] when
444 : before ( duration -- -duration )
447 : duration- ( duration1 duration2 -- duration3 )
450 [ [ month>> ] bi@ - ]
453 [ [ minute>> ] bi@ - ]
454 [ [ second>> ] bi@ - ]
455 } 2cleave <duration> ; inline
458 over timestamp? [ before time+ ] [ duration- ] if ;
460 : unix-1970 ( -- timestamp )
461 1970 <year-gmt> ; inline
463 : millis>timestamp ( x -- timestamp )
464 unix-1970 swap 1000 / +second ;
466 : timestamp>millis ( timestamp -- n )
467 unix-1970 (time-) 1000 * >integer ;
469 : micros>timestamp ( x -- timestamp )
470 unix-1970 swap 1000000 / +second ;
472 : timestamp>micros ( timestamp -- n )
473 unix-1970 (time-) 1000000 * >integer ;
475 : now ( -- timestamp )
476 now-gmt gmt-offset-duration [ (time+) ] [ >>gmt-offset ] bi ;
478 : hence ( duration -- timestamp ) now swap time+ ;
479 : ago ( duration -- timestamp ) now swap time- ;
480 : days-since ( time -- n ) ago duration>days ;
481 : days-until ( time -- n ) now time- duration>days ;
483 GENERIC: days-in-year ( obj -- n )
485 M: integer days-in-year leap-year? 366 365 ? ;
487 M: timestamp days-in-year year>> days-in-year ;
489 : days-in-month ( timestamp -- n )
490 >date< drop (days-in-month) ;
492 : midnight ( timestamp -- timestamp' ) clone 0 0 0 set-time ; inline
493 : noon ( timestamp -- timestamp' ) clone 12 0 0 set-time ; inline
495 : today ( -- timestamp ) now midnight ; inline
496 : tomorrow ( -- timestamp ) 1 days hence midnight ; inline
497 : yesterday ( -- timestamp ) 1 days ago midnight ; inline
498 : overmorrow ( -- timestamp ) 2 days hence midnight ; inline
499 : ereyesterday ( -- timestamp ) 2 days ago midnight ; inline
501 : today? ( timestamp -- ? ) now same-day? ; inline
502 : tomorrow? ( timestamp -- ? ) 1 days hence same-day? ; inline
503 : yesterday? ( timestamp -- ? ) 1 days ago same-day? ; inline
505 ALIAS: start-of-day midnight
507 : end-of-day ( timestamp -- timestamp' )
508 clone 23 >>hour 59 >>minute 59+999/1000 >>second ; inline
510 : first-day-of-month ( timestamp -- timestamp' )
513 : last-day-of-month ( timestamp -- timestamp' )
514 clone dup days-in-month >>day ; inline
516 : start-of-month ( timestamp -- timestamp' )
517 midnight first-day-of-month ; inline
519 : end-of-month ( timestamp -- timestamp' )
520 [ end-of-day ] [ days-in-month ] bi >>day ;
522 : start-of-quarter ( timestamp -- timestamp' )
523 [ start-of-day ] [ quarter 1 - 3 * ] bi >>month ; inline
525 : end-of-quarter ( timestamp -- timestamp' )
526 dup quarter 1 - 3 * 3 + >>month end-of-month ; inline
528 GENERIC: first-day-of-year ( object -- timestamp )
529 M: timestamp first-day-of-year clone 1 >>month 1 >>day ;
530 M: integer first-day-of-year <year> ;
532 GENERIC: last-day-of-year ( object -- timestamp )
533 M: timestamp last-day-of-year clone 12 >>month 31 >>day ;
534 M: integer last-day-of-year 12 31 <date> ;
536 : first-day-of-decade ( object -- timestamp' )
537 first-day-of-year [ dup 10 mod - ] change-year ;
539 : last-day-of-decade ( object -- timestamp' )
540 last-day-of-year [ dup 10 mod - 9 + ] change-year ;
542 : first-day-of-century ( object -- timestamp' )
543 first-day-of-year [ dup 100 mod - ] change-year ;
545 : last-day-of-century ( object -- timestamp' )
546 last-day-of-year [ dup 100 mod - 99 + ] change-year ;
548 : first-day-of-millennium ( object -- timestamp' )
549 first-day-of-year [ dup 1000 mod - ] change-year ;
551 : last-day-of-millennium ( object -- timestamp' )
552 last-day-of-year [ dup 1000 mod - 999 + ] change-year ;
554 : start-of-year ( object -- timestamp )
555 first-day-of-year start-of-day ;
557 : end-of-year ( object -- timestamp )
558 last-day-of-year end-of-day ;
560 : start-of-decade ( object -- timestamp )
561 first-day-of-decade start-of-day ;
563 : end-of-decade ( object -- timestamp )
564 last-day-of-decade end-of-day ;
566 : end-of-century ( object -- timestamp )
567 last-day-of-century end-of-day ;
569 : start-of-millennium ( object -- timestamp )
570 first-day-of-millennium start-of-day ;
572 : end-of-millennium ( object -- timestamp )
573 last-day-of-millennium end-of-day ;
575 : start-of-hour ( timestamp -- timestamp' ) clone 0 >>minute 0 >>second ;
576 : end-of-hour ( timestamp -- timestamp' ) clone 59 >>minute 59+999/1000 >>second ;
578 : start-of-minute ( timestamp -- timestamp' ) clone 0 >>second ;
579 : end-of-minute ( timestamp -- timestamp' ) clone 59+999/1000 >>second ;
581 : start-of-second ( timestamp -- timestamp' ) clone [ floor ] change-second ;
582 : end-of-second ( timestamp -- timestamp' ) clone [ floor 999/1000 + ] change-second ;
586 : day-offset ( timestamp m -- timestamp n )
587 over day-of-week - ; inline
589 : day-this-week ( timestamp n -- timestamp' )
590 day-offset days time+ ;
592 : closest-day ( timestamp n -- timestamp' )
593 [ dup day-of-week 7 swap - ] [ + 7 mod ] bi*
594 { 0 1 2 3 -3 -2 -1 } nth days time+ ;
596 :: nth-day-this-month ( $timestamp $n $day -- timestamp' )
598 $timestamp start-of-month $day day-this-week
599 [ [ month>> ] same? ] keep swap
600 [ $n ] [ $n 1 + ] if weeks time+ ;
604 GENERIC: january ( obj -- timestamp' )
605 GENERIC: february ( obj -- timestamp' )
606 GENERIC: march ( obj -- timestamp' )
607 GENERIC: april ( obj -- timestamp' )
608 GENERIC: may ( obj -- timestamp' )
609 GENERIC: june ( obj -- timestamp' )
610 GENERIC: july ( obj -- timestamp' )
611 GENERIC: august ( obj -- timestamp' )
612 GENERIC: september ( obj -- timestamp' )
613 GENERIC: october ( obj -- timestamp' )
614 GENERIC: november ( obj -- timestamp' )
615 GENERIC: december ( obj -- timestamp' )
617 M: integer january 1 1 <date> ;
618 M: integer february 2 1 <date> ;
619 M: integer march 3 1 <date> ;
620 M: integer april 4 1 <date> ;
621 M: integer may 5 1 <date> ;
622 M: integer june 6 1 <date> ;
623 M: integer july 7 1 <date> ;
624 M: integer august 8 1 <date> ;
625 M: integer september 9 1 <date> ;
626 M: integer october 10 1 <date> ;
627 M: integer november 11 1 <date> ;
628 M: integer december 12 1 <date> ;
630 M: timestamp january clone 1 >>month ;
631 M: timestamp february clone 2 >>month ;
632 M: timestamp march clone 3 >>month ;
633 M: timestamp april clone 4 >>month ;
634 M: timestamp may clone 5 >>month ;
635 M: timestamp june clone 6 >>month ;
636 M: timestamp july clone 7 >>month ;
637 M: timestamp august clone 8 >>month ;
638 M: timestamp september clone 9 >>month ;
639 M: timestamp october clone 10 >>month ;
640 M: timestamp november clone 11 >>month ;
641 M: timestamp december clone 12 >>month ;
643 : closest-sunday ( timestamp -- timestamp' ) 0 closest-day ;
644 : closest-monday ( timestamp -- timestamp' ) 1 closest-day ;
645 : closest-tuesday ( timestamp -- timestamp' ) 2 closest-day ;
646 : closest-wednesday ( timestamp -- timestamp' ) 3 closest-day ;
647 : closest-thursday ( timestamp -- timestamp' ) 4 closest-day ;
648 : closest-friday ( timestamp -- timestamp' ) 5 closest-day ;
649 : closest-saturday ( timestamp -- timestamp' ) 6 closest-day ;
651 : sunday ( timestamp -- timestamp' ) 0 day-this-week ;
652 : monday ( timestamp -- timestamp' ) 1 day-this-week ;
653 : tuesday ( timestamp -- timestamp' ) 2 day-this-week ;
654 : wednesday ( timestamp -- timestamp' ) 3 day-this-week ;
655 : thursday ( timestamp -- timestamp' ) 4 day-this-week ;
656 : friday ( timestamp -- timestamp' ) 5 day-this-week ;
657 : saturday ( timestamp -- timestamp' ) 6 day-this-week ;
659 ALIAS: first-day-of-week sunday
660 ALIAS: last-day-of-week saturday
662 : day< ( timestamp quot -- timestamp' )
663 over clone [ call dup ] dip after=? [ -7 days time+ ] when ; inline
664 : day<= ( timestamp quot -- timestamp' )
665 over clone [ call dup ] dip after? [ -7 days time+ ] when ; inline
666 : day> ( timestamp quot -- timestamp' )
667 over clone [ call dup ] dip before=? [ 7 days time+ ] when ; inline
668 : day>= ( timestamp quot -- timestamp' )
669 over clone [ call dup ] dip before? [ 7 days time+ ] when ; inline
671 : sunday< ( timestamp -- timestamp' ) [ sunday ] day< ;
672 : monday< ( timestamp -- timestamp' ) [ monday ] day< ;
673 : tuesday< ( timestamp -- timestamp' ) [ tuesday ] day< ;
674 : wednesday< ( timestamp -- timestamp' ) [ wednesday ] day< ;
675 : thursday< ( timestamp -- timestamp' ) [ thursday ] day< ;
676 : friday< ( timestamp -- timestamp' ) [ friday ] day< ;
677 : saturday< ( timestamp -- timestamp' ) [ saturday ] day< ;
679 : sunday<= ( timestamp -- timestamp' ) [ sunday ] day<= ;
680 : monday<= ( timestamp -- timestamp' ) [ monday ] day<= ;
681 : tuesday<= ( timestamp -- timestamp' ) [ tuesday ] day<= ;
682 : wednesday<= ( timestamp -- timestamp' ) [ wednesday ] day<= ;
683 : thursday<= ( timestamp -- timestamp' ) [ thursday ] day<= ;
684 : friday<= ( timestamp -- timestamp' ) [ friday ] day<= ;
685 : saturday<= ( timestamp -- timestamp' ) [ saturday ] day<= ;
687 : sunday> ( timestamp -- timestamp' ) [ sunday ] day> ;
688 : monday> ( timestamp -- timestamp' ) [ monday ] day> ;
689 : tuesday> ( timestamp -- timestamp' ) [ tuesday ] day> ;
690 : wednesday> ( timestamp -- timestamp' ) [ wednesday ] day> ;
691 : thursday> ( timestamp -- timestamp' ) [ thursday ] day> ;
692 : friday> ( timestamp -- timestamp' ) [ friday ] day> ;
693 : saturday> ( timestamp -- timestamp' ) [ saturday ] day> ;
695 : sunday>= ( timestamp -- timestamp' ) [ sunday ] day>= ;
696 : monday>= ( timestamp -- timestamp' ) [ monday ] day>= ;
697 : tuesday>= ( timestamp -- timestamp' ) [ tuesday ] day>= ;
698 : wednesday>= ( timestamp -- timestamp' ) [ wednesday ] day>= ;
699 : thursday>= ( timestamp -- timestamp' ) [ thursday ] day>= ;
700 : friday>= ( timestamp -- timestamp' ) [ friday ] day>= ;
701 : saturday>= ( timestamp -- timestamp' ) [ saturday ] day>= ;
703 : next-sunday ( timestamp -- timestamp' ) closest-sunday sunday> ;
704 : next-monday ( timestamp -- timestamp' ) closest-monday monday> ;
705 : next-tuesday ( timestamp -- timestamp' ) closest-tuesday tuesday> ;
706 : next-wednesday ( timestamp -- timestamp' ) closest-wednesday wednesday> ;
707 : next-thursday ( timestamp -- timestamp' ) closest-thursday thursday> ;
708 : next-friday ( timestamp -- timestamp' ) closest-friday friday> ;
709 : next-saturday ( timestamp -- timestamp' ) closest-saturday saturday> ;
711 : last-sunday ( timestamp -- timestamp' ) closest-sunday sunday< ;
712 : last-monday ( timestamp -- timestamp' ) closest-monday monday< ;
713 : last-tuesday ( timestamp -- timestamp' ) closest-tuesday tuesday< ;
714 : last-wednesday ( timestamp -- timestamp' ) closest-wednesday wednesday< ;
715 : last-thursday ( timestamp -- timestamp' ) closest-thursday thursday< ;
716 : last-friday ( timestamp -- timestamp' ) closest-friday friday< ;
717 : last-saturday ( timestamp -- timestamp' ) closest-saturday saturday< ;
719 : sunday? ( timestamp -- ? ) day-of-week 0 = ;
720 : monday? ( timestamp -- ? ) day-of-week 1 = ;
721 : tuesday? ( timestamp -- ? ) day-of-week 2 = ;
722 : wednesday? ( timestamp -- ? ) day-of-week 3 = ;
723 : thursday? ( timestamp -- ? ) day-of-week 4 = ;
724 : friday? ( timestamp -- ? ) day-of-week 5 = ;
725 : saturday? ( timestamp -- ? ) day-of-week 6 = ;
727 : january? ( timestamp -- ? ) month>> 1 = ;
728 : february? ( timestamp -- ? ) month>> 2 = ;
729 : march? ( timestamp -- ? ) month>> 3 = ;
730 : april? ( timestamp -- ? ) month>> 4 = ;
731 : may? ( timestamp -- ? ) month>> 5 = ;
732 : june? ( timestamp -- ? ) month>> 6 = ;
733 : july? ( timestamp -- ? ) month>> 7 = ;
734 : august? ( timestamp -- ? ) month>> 8 = ;
735 : september? ( timestamp -- ? ) month>> 9 = ;
736 : october? ( timestamp -- ? ) month>> 10 = ;
737 : november? ( timestamp -- ? ) month>> 11 = ;
738 : december? ( timestamp -- ? ) month>> 12 = ;
740 : weekend? ( timestamp -- ? ) day-of-week { 0 6 } member? ;
741 : weekday? ( timestamp -- ? ) weekend? not ;
743 : same-or-next-business-day ( timestamp -- timestamp' )
746 { 6 [ 2 days time+ ] }
750 : same-or-previous-business-day ( timestamp -- timestamp' )
752 { 0 [ -2 days time+ ] }
757 : weekdays-between ( date1 date2 -- n )
759 [ swap time- duration>days 5 * ]
760 [ [ day-of-week ] bi@ - 2 * ] 2bi - 7 /i 1 +
762 day-of-week 6 = [ [ 1 - ] dip ] when
763 day-of-week 0 = [ 1 - ] when ;
765 : sunday-of-month ( timestamp n -- timestamp' ) 0 nth-day-this-month ;
766 : monday-of-month ( timestamp n -- timestamp' ) 1 nth-day-this-month ;
767 : tuesday-of-month ( timestamp n -- timestamp' ) 2 nth-day-this-month ;
768 : wednesday-of-month ( timestamp n -- timestamp' ) 3 nth-day-this-month ;
769 : thursday-of-month ( timestamp n -- timestamp' ) 4 nth-day-this-month ;
770 : friday-of-month ( timestamp n -- timestamp' ) 5 nth-day-this-month ;
771 : saturday-of-month ( timestamp n -- timestamp' ) 6 nth-day-this-month ;
773 : last-sunday-of-month ( timestamp -- timestamp' ) last-day-of-month sunday<= ;
774 : last-monday-of-month ( timestamp -- timestamp' ) last-day-of-month monday<= ;
775 : last-tuesday-of-month ( timestamp -- timestamp' ) last-day-of-month tuesday<= ;
776 : last-wednesday-of-month ( timestamp -- timestamp' ) last-day-of-month wednesday<= ;
777 : last-thursday-of-month ( timestamp -- timestamp' ) last-day-of-month thursday<= ;
778 : last-friday-of-month ( timestamp -- timestamp' ) last-day-of-month friday<= ;
779 : last-saturday-of-month ( timestamp -- timestamp' ) last-day-of-month saturday<= ;
781 : start-of-week ( timestamp -- timestamp' )
784 : end-of-week ( timestamp -- timestamp' )
785 saturday end-of-day ;
787 : o'clock ( timestamp n -- timestamp' )
788 [ midnight ] dip >>hour ;
790 : am ( timestamp n -- timestamp' )
791 1 12 [a,b] check-interval 12 mod o'clock ;
793 : pm ( timestamp n -- timestamp' )
794 1 12 [a,b] check-interval 12 mod 12 + o'clock ;
796 : time-since-midnight ( timestamp -- duration )
797 instant swap >time< set-time ;
799 : since-1970 ( duration -- timestamp )
800 unix-1970 swap (time+) ; inline
802 : timestamp>unix-time ( timestamp -- seconds )
803 unix-1970 (time-) ; inline
805 : unix-time>timestamp ( seconds -- timestamp )
806 unix-1970 swap +second ; inline
808 ! January and February need a fixup with this algorithm.
809 ! Find a better algorithm.
810 : ymd>ordinal ( year month day -- ordinal )
811 [ leap-year? dup -2 -3 ? ]
812 [ dup 3 < [ 12 + ] when [ 1 - 30 * ] [ 1 + .6 * floor ] bi + ]
813 [ ] tri* + + >integer
816 : timestamp>year-dates-gmt ( timestamp -- seq )
817 [ year>> 1 1 julian-day-number ] [ days-in-year ] bi
819 [a..b) [ julian-day-number>date <date-gmt> ] map ;
821 : year-ordinal>timestamp ( year ordinal -- timestamp )
822 [ 1 1 julian-day-number ] dip
823 + 1 - julian-day-number>date <date-gmt> ;
825 GENERIC: weeks-in-week-year ( obj -- n )
827 M: integer weeks-in-week-year
828 { [ 1 1 <date> thursday? ] [ 12 31 <date> thursday? ] } 1|| 53 52 ? ;
830 M: timestamp weeks-in-week-year
831 { [ january 1 >>day thursday? ] [ december 31 >>day thursday? ] } 1|| 53 52 ? ;
834 { [ os unix? ] [ "calendar.unix" ] }
835 { [ os windows? ] [ "calendar.windows" ] }
838 { "threads" "calendar" } "calendar.threads" require-when