------------------------------------------------------------------------------ -- -- -- GNAT RUNTIME COMPONENTS -- -- -- -- A D A . C A L E N D A R -- -- -- -- S p e c -- -- -- -- Copyright (C) 1992-2002 Free Software Foundation, Inc. -- -- -- -- This specification is derived from the Ada Reference Manual for use with -- -- GNAT. The copyright notice above, and the license provisions that follow -- -- apply solely to the contents of the part following the private keyword. -- -- -- -- GNAT is free software; you can redistribute it and/or modify it under -- -- terms of the GNU General Public License as published by the Free Soft- -- -- ware Foundation; either version 2, or (at your option) any later ver- -- -- sion. GNAT is distributed in the hope that it will be useful, but WITH- -- -- OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY -- -- or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License -- -- for more details. You should have received a copy of the GNU General -- -- Public License distributed with GNAT; see file COPYING. If not, write -- -- to the Free Software Foundation, 59 Temple Place - Suite 330, Boston, -- -- MA 02111-1307, USA. -- -- -- -- As a special exception, if other files instantiate generics from this -- -- unit, or you link this unit with other files to produce an executable, -- -- this unit does not by itself cause the resulting executable to be -- -- covered by the GNU General Public License. This exception does not -- -- however invalidate any other reasons why the executable file might be -- -- covered by the GNU Public License. -- -- -- -- GNAT was originally developed by the GNAT team at New York University. -- -- Extensive contributions were provided by Ada Core Technologies Inc. -- -- -- ------------------------------------------------------------------------------ -- This is the Alpha/VMS version. with System.OS_Primitives; package Ada.Calendar is package OSP renames System.OS_Primitives; type Time is private; -- Declarations representing limits of allowed local time values. Note that -- these do NOT constrain the possible stored values of time which may well -- permit a larger range of times (this is explicitly allowed in Ada 95). subtype Year_Number is Integer range 1901 .. 2099; subtype Month_Number is Integer range 1 .. 12; subtype Day_Number is Integer range 1 .. 31; subtype Day_Duration is Duration range 0.0 .. 86_400.0; function Clock return Time; function Year (Date : Time) return Year_Number; function Month (Date : Time) return Month_Number; function Day (Date : Time) return Day_Number; function Seconds (Date : Time) return Day_Duration; procedure Split (Date : Time; Year : out Year_Number; Month : out Month_Number; Day : out Day_Number; Seconds : out Day_Duration); function Time_Of (Year : Year_Number; Month : Month_Number; Day : Day_Number; Seconds : Day_Duration := 0.0) return Time; function "+" (Left : Time; Right : Duration) return Time; function "+" (Left : Duration; Right : Time) return Time; function "-" (Left : Time; Right : Duration) return Time; function "-" (Left : Time; Right : Time) return Duration; function "<" (Left, Right : Time) return Boolean; function "<=" (Left, Right : Time) return Boolean; function ">" (Left, Right : Time) return Boolean; function ">=" (Left, Right : Time) return Boolean; Time_Error : exception; private pragma Inline (Clock); pragma Inline (Year); pragma Inline (Month); pragma Inline (Day); pragma Inline ("+"); pragma Inline ("-"); pragma Inline ("<"); pragma Inline ("<="); pragma Inline (">"); pragma Inline (">="); -- Time is represented as the number of 100-nanosecond (ns) units offset -- from the system base date and time, which is 00:00 o'clock, -- November 17, 1858 (the Smithsonian base date and time for the -- astronomic calendar). -- The time value stored is typically a GMT value, as provided in standard -- Unix environments. If this is the case then Split and Time_Of perform -- required conversions to and from local times. type Time is new OSP.OS_Time; -- Notwithstanding this definition, Time is not quite the same as OS_Time. -- Relative Time is positive, whereas relative OS_Time is negative, -- but this declaration makes for easier conversion. end Ada.Calendar;