From 5892c59cc4dd947692ff1503b39ab7dc4e02037b Mon Sep 17 00:00:00 2001 From: Patrick Hurst Date: Thu, 5 Dec 2013 11:36:46 -0500 Subject: Basic datetime library. --- lib/ur/datetime.ur | 26 ++++++++++++++++++++++++++ 1 file changed, 26 insertions(+) create mode 100644 lib/ur/datetime.ur (limited to 'lib/ur/datetime.ur') diff --git a/lib/ur/datetime.ur b/lib/ur/datetime.ur new file mode 100644 index 00000000..56c29724 --- /dev/null +++ b/lib/ur/datetime.ur @@ -0,0 +1,26 @@ +type datetime = { + Year : int, + Month : int, + Day : int, + Hour : int, + Minute : int, + Second : int +} + +fun toTime dt : time = fromDatetime dt.Year dt.Month dt.Day + dt.Hour dt.Minute dt.Second + +fun fromTime t : datetime = { + Year = datetimeYear t, + Month = datetimeMonth t, + Day = datetimeDay t, + Hour = datetimeHour t, + Minute = datetimeMinute t, + Second = datetimeSecond t +} + +fun datetimef fmt dt : string = timef fmt (toTime dt) + +val now : transaction datetime = + n <- now; + return (fromTime n) -- cgit v1.2.3 From 90c266db553a99056e0baac98df05f06c34de4ae Mon Sep 17 00:00:00 2001 From: Patrick Hurst Date: Thu, 5 Dec 2013 11:36:54 -0500 Subject: Day of week functions. --- lib/ur/basis.urs | 1 + lib/ur/datetime.ur | 12 ++++++++++++ lib/ur/datetime.urs | 5 +++++ src/c/urweb.c | 5 +++++ 4 files changed, 23 insertions(+) (limited to 'lib/ur/datetime.ur') diff --git a/lib/ur/basis.urs b/lib/ur/basis.urs index 804f15b9..36d2effa 100644 --- a/lib/ur/basis.urs +++ b/lib/ur/basis.urs @@ -175,6 +175,7 @@ val datetimeDay : time -> int val datetimeHour : time -> int val datetimeMinute: time -> int val datetimeSecond : time -> int +val datetimeDayOfWeek : time -> int (** * Encryption *) diff --git a/lib/ur/datetime.ur b/lib/ur/datetime.ur index 56c29724..a633dc83 100644 --- a/lib/ur/datetime.ur +++ b/lib/ur/datetime.ur @@ -7,6 +7,18 @@ type datetime = { Second : int } +datatype day_of_week = Sunday | Monday | Tuesday | Wednesday | Thursday | + Friday | Saturday + +val show = mkShow (fn dow => case dow of + Sunday => "Sunday" + | Monday => "Monday" + | Tuesday => "Tuesday" + | Wednesday => "Wednesday" + | Thursday => "Thursday" + | Friday => "Friday" + | Saturday => "Saturday") + fun toTime dt : time = fromDatetime dt.Year dt.Month dt.Day dt.Hour dt.Minute dt.Second diff --git a/lib/ur/datetime.urs b/lib/ur/datetime.urs index 9d99b9e3..0d8e8c28 100644 --- a/lib/ur/datetime.urs +++ b/lib/ur/datetime.urs @@ -6,6 +6,11 @@ type datetime = { Year : int, Second : int } +datatype day_of_week = Sunday | Monday | Tuesday | Wednesday | Thursday | + Friday | Saturday + +val show : show day_of_week + val toTime : datetime -> time val fromTime : time -> datetime val datetimef : string -> datetime -> string diff --git a/src/c/urweb.c b/src/c/urweb.c index cb71aa15..fb6d28c6 100644 --- a/src/c/urweb.c +++ b/src/c/urweb.c @@ -3894,6 +3894,11 @@ uw_Basis_int uw_Basis_datetimeSecond(uw_context ctx, uw_Basis_time time) { return tm.tm_sec; } +uw_Basis_int uw_Basis_datetimeDayOfWeek(uw_context ctx, uw_Basis_time time) { + struct tm tm; + gmtime_r(&time.seconds, &tm); + return tm.tm_wday; +} void *uw_get_global(uw_context ctx, char *name) { -- cgit v1.2.3 From b2873bdd07801753460bd6f1b9efcc235a2f0268 Mon Sep 17 00:00:00 2001 From: Patrick Hurst Date: Sat, 7 Dec 2013 21:31:51 -0500 Subject: Add day-of-week/month <-> int conversion functions. --- lib/ur/datetime.ur | 113 +++++++++++++++++++++++++++++++++++++++++++++------- lib/ur/datetime.urs | 33 ++++++++++----- 2 files changed, 121 insertions(+), 25 deletions(-) (limited to 'lib/ur/datetime.ur') diff --git a/lib/ur/datetime.ur b/lib/ur/datetime.ur index a633dc83..6d995d89 100644 --- a/lib/ur/datetime.ur +++ b/lib/ur/datetime.ur @@ -1,37 +1,120 @@ -type datetime = { +datatype day_of_week = Sunday | Monday | Tuesday | Wednesday | Thursday | + Friday | Saturday + +val show_day_of_week = mkShow (fn dow => case dow of + Sunday => "Sunday" + | Monday => "Monday" + | Tuesday => "Tuesday" + | Wednesday => "Wednesday" + | Thursday => "Thursday" + | Friday => "Friday" + | Saturday => "Saturday") + +fun dayOfWeekToInt dow = case dow of + Sunday => 0 + | Monday => 1 + | Tuesday => 2 + | Wednesday => 3 + | Thursday => 4 + | Friday => 5 + | Saturday => 6 + +fun intToDayOfWeek i = case i of + 0 => Sunday + | 1 => Monday + | 2 => Tuesday + | 3 => Wednesday + | 4 => Thursday + | 5 => Friday + | 6 => Saturday + | n => error Invalid day of week {[n]} + +val eq_day_of_week = mkEq (fn a b => dayOfWeekToInt a = dayOfWeekToInt b) + + +datatype month = January | February | March | April | May | June | July | + August | September | October | November | December + +val show_month = mkShow (fn m => case m of + January => "January" + | February => "February" + | March => "March" + | April => "April" + | May => "May" + | June => "June" + | July => "July" + | August => "August" + | September => "September" + | October => "October" + | November => "November" + | December => "December") + +type t = { Year : int, - Month : int, + Month : month, Day : int, Hour : int, Minute : int, Second : int } -datatype day_of_week = Sunday | Monday | Tuesday | Wednesday | Thursday | - Friday | Saturday +fun monthToInt m = case m of + January => 0 + | February => 1 + | March => 2 + | April => 3 + | May => 4 + | June => 5 + | July => 6 + | August => 7 + | September => 8 + | October => 9 + | November => 10 + | December => 11 -val show = mkShow (fn dow => case dow of - Sunday => "Sunday" - | Monday => "Monday" - | Tuesday => "Tuesday" - | Wednesday => "Wednesday" - | Thursday => "Thursday" - | Friday => "Friday" - | Saturday => "Saturday") +fun intToMonth i = case i of + 0 => January + | 1 => February + | 2 => March + | 3 => April + | 4 => May + | 5 => June + | 6 => July + | 7 => August + | 8 => September + | 9 => October + | 10 => November + | 11 => December + | n => error Invalid month number {[n]} -fun toTime dt : time = fromDatetime dt.Year dt.Month dt.Day +val eq_month = mkEq (fn a b => monthToInt a = monthToInt b) + + +fun toTime dt : time = fromDatetime dt.Year (monthToInt dt.Month) dt.Day dt.Hour dt.Minute dt.Second fun fromTime t : datetime = { Year = datetimeYear t, - Month = datetimeMonth t, + Month = intToMonth (datetimeMonth t), Day = datetimeDay t, Hour = datetimeHour t, Minute = datetimeMinute t, Second = datetimeSecond t } -fun datetimef fmt dt : string = timef fmt (toTime dt) +fun format fmt dt : string = timef fmt (toTime dt) + +fun dayOfWeek dt : day_of_week = + case datetimeDayOfWeek (toTime dt) of + 0 => Sunday + | 1 => Monday + | 2 => Tuesday + | 3 => Wednesday + | 4 => Thursday + | 5 => Friday + | 6 => Saturday + | n => error Illegal day of week {[n]} + val now : transaction datetime = n <- now; diff --git a/lib/ur/datetime.urs b/lib/ur/datetime.urs index 0d8e8c28..2fc2998b 100644 --- a/lib/ur/datetime.urs +++ b/lib/ur/datetime.urs @@ -1,17 +1,30 @@ -type datetime = { Year : int, - Month : int, - Day : int, - Hour : int, - Minute : int, - Second : int - } - datatype day_of_week = Sunday | Monday | Tuesday | Wednesday | Thursday | Friday | Saturday -val show : show day_of_week +datatype month = January | February | March | April | May | June | July | + August | September | October | November | December + + +type datetime = { + Year : int, + Month : month, + Day : int, + Hour : int, + Minute : int, + Second : int +} + +val show_day_of_week : show day_of_week +val show_month : show month +val eq_day_of_week : eq day_of_week +val eq_month : eq month +val dayOfWeekToInt : day_of_week -> int +val intToDayOfWeek : int -> day_of_week +val monthToInt : month -> int +val intToMonth : int -> month val toTime : datetime -> time val fromTime : time -> datetime -val datetimef : string -> datetime -> string +val format : string -> datetime -> string +val dayOfWeek : datetime -> day_of_week val now : transaction datetime -- cgit v1.2.3 From d26ce87498bfbdcf1c510d7c0853f8ac8f07314f Mon Sep 17 00:00:00 2001 From: Patrick Hurst Date: Sun, 8 Dec 2013 13:14:58 -0500 Subject: Finish datetime -> t rename --- lib/ur/datetime.ur | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'lib/ur/datetime.ur') diff --git a/lib/ur/datetime.ur b/lib/ur/datetime.ur index 6d995d89..dbc68da1 100644 --- a/lib/ur/datetime.ur +++ b/lib/ur/datetime.ur @@ -93,7 +93,7 @@ val eq_month = mkEq (fn a b => monthToInt a = monthToInt b) fun toTime dt : time = fromDatetime dt.Year (monthToInt dt.Month) dt.Day dt.Hour dt.Minute dt.Second -fun fromTime t : datetime = { +fun fromTime t : t = { Year = datetimeYear t, Month = intToMonth (datetimeMonth t), Day = datetimeDay t, @@ -116,6 +116,6 @@ fun dayOfWeek dt : day_of_week = | n => error Illegal day of week {[n]} -val now : transaction datetime = +val now : transaction t = n <- now; return (fromTime n) -- cgit v1.2.3 From 5f60bd5eebb24a474d55dc8edf38c8e67c590a17 Mon Sep 17 00:00:00 2001 From: Patrick Hurst Date: Mon, 9 Dec 2013 19:19:12 -0500 Subject: Add datetime functions for adding time intervals. --- lib/ur/datetime.ur | 25 ++++++++++++++++++++++++- lib/ur/datetime.urs | 8 ++++++++ 2 files changed, 32 insertions(+), 1 deletion(-) (limited to 'lib/ur/datetime.ur') diff --git a/lib/ur/datetime.ur b/lib/ur/datetime.ur index dbc68da1..676f141f 100644 --- a/lib/ur/datetime.ur +++ b/lib/ur/datetime.ur @@ -102,6 +102,9 @@ fun fromTime t : t = { Second = datetimeSecond t } +val ord_datetime = mkOrd { Lt = fn a b => toTime a < toTime b, + Le = fn a b => toTime a <= toTime b } + fun format fmt dt : string = timef fmt (toTime dt) fun dayOfWeek dt : day_of_week = @@ -115,7 +118,27 @@ fun dayOfWeek dt : day_of_week = | 6 => Saturday | n => error Illegal day of week {[n]} - val now : transaction t = n <- now; return (fromTime n) + +(* Normalize a datetime. This will convert, e.g., January 32nd into February + 1st. *) + +fun normalize dt = fromTime (toTime dt) +fun addToField [nm :: Name] [rest ::: {Type}] [[nm] ~ rest] + (delta : int) (r : $([nm = int] ++ rest)) + : $([nm = int] ++ rest) = + (r -- nm) ++ {nm = r.nm + delta} + + +(* Functions for adding to a datetime. There is no addMonths or addYears since + it's not clear what should be done; what's 1 month after January 31, or 1 + year after February 29th? + + These can't all be defined in terms of addSeconds because of leap seconds. *) + +fun addSeconds n dt = normalize (addToField [#Second] n dt) +fun addMinutes n dt = normalize (addToField [#Minute] n dt) +fun addHours n dt = normalize (addToField [#Hour] n dt) +fun addDays n dt = normalize (addToField [#Day] n dt) diff --git a/lib/ur/datetime.urs b/lib/ur/datetime.urs index 26ee795a..972f86bf 100644 --- a/lib/ur/datetime.urs +++ b/lib/ur/datetime.urs @@ -14,6 +14,8 @@ type t = { Second : int } +val ord_datetime : ord t + val show_day_of_week : show day_of_week val show_month : show month val eq_day_of_week : eq day_of_week @@ -28,3 +30,9 @@ val fromTime : time -> t val format : string -> t -> string val dayOfWeek : t -> day_of_week val now : transaction t +val normalize : t -> t + +val addSeconds : int -> t -> t +val addMinutes : int -> t -> t +val addHours : int -> t -> t +val addDays : int -> t -> t -- cgit v1.2.3