simple grammar for dates

1 files changed, 66 insertions, 0 deletions

diff --git a/examples/dates/DatesEng.gf b/examples/dates/DatesEng.gf
new file mode 100644
index 000000000..2113c11dd
--- /dev/null
+++ b/examples/dates/DatesEng.gf
@@ -0,0 +1,66 @@
+concrete DatesEng of Dates = open Prelude in {
+
+lincat
+  Date, Year, Month, Day, Time, Hour, Minute, Weekday, Ampm = Str ;
+
+lin
+  DFull y m d w t = opts (opts "on" ++ w ++ comma) ++ opts (bothWays m d ++ opts comma) ++ opts (y ++ opts comma) ++ opts ("at" ++ t) ;
+
+  MkYear i = i.s ;
+
+  MJan = "January" ;
+  MFeb = "February" ;
+  MMar = "March" ;
+  MApr = "April" ; 
+  MMay = "May" ; 
+  MJun = "June" ; 
+  MJul = "July" ;
+  MAug = "August" ;
+  MSep = "September" ;
+  MOct = "October" ;
+  MNov = "November" ;
+  MDec = "December" ;
+
+  MkDay i = i.s ;
+
+  MkTime ap h m = h ++ opts (dot ++ m) ++ opts ap ;
+
+  H01 = "1" ;
+  H02 = "2" ;
+  H03 = "3" ;
+  H04 = "4" ;
+  H05 = "5" ;
+  H06 = "6" ;
+  H07 = "7" ;
+  H08 = "8" ;
+  H09 = "9" ;
+  H10 = "10" ;
+  H11 = "11" ;
+  H12 = "12" ;
+
+  MkMinute i = i.s ;
+
+  WSun = "Sunday" ;
+  WMon = "Monday" ;
+  WTue = "Tuesday" ;
+  WWed = "Wednesday" ;
+  WThu = "Thursday" ;
+  WFri = "Friday" ;
+  WSat = "Saturday" ;
+
+  AM = "a.m." ;
+  PM = "p.m." ;
+
+oper
+  opts = optStr ;
+  dot = "." ;
+  comma = "," ;
+
+lin
+  DToday t     = "today" ++ opts ("at" ++ t) ;
+  DTomorrow t  = "tomorrow" ++ opts ("at" ++ t) ;
+  DYesterday t = "yesterday" ++ opts ("at" ++ t) ;
+
+
+}
+