| ------------------------------------------------------------------------------ |
| -- -- |
| -- GNAT RUN-TIME COMPONENTS -- |
| -- -- |
| -- A D A . C A L E N D A R -- |
| -- -- |
| -- S p e c -- |
| -- -- |
| -- Copyright (C) 1992-2005, 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, 51 Franklin Street, Fifth Floor, -- |
| -- Boston, MA 02110-1301, 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; |
