Ada 编程/库/Ada.Calendar.Formatting

此语言功能仅从 Ada 2005 开始提供。

Ada.Calendar.Formatting 是预定义语言环境自 Ada 2005 以来的一部分。

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--                     Standard Ada library specification
--   Copyright (c) 2003-2018 Maxim Reznik <[email protected]>
--   Copyright (c) 2004-2016 AXE Consultants
--   Copyright (c) 2004, 2005, 2006 Ada-Europe
--   Copyright (c) 2000 The MITRE Corporation, Inc.
--   Copyright (c) 1992, 1993, 1994, 1995 Intermetrics, Inc.
--   SPDX-License-Identifier: BSD-3-Clause and LicenseRef-AdaReferenceManual
-- -------------------------------------------------------------------------

with Ada.Calendar.Time_Zones;

package Ada.Calendar.Formatting is

   --   Day of the week:

   type Day_Name is
     (Monday, Tuesday, Wednesday, Thursday, Friday, Saturday, Sunday);

   function Day_of_Week (Date : in Time) return Day_Name;

   --   Hours:Minutes:Seconds access:

   subtype Hour_Number     is Natural range 0 .. 23;
   subtype Minute_Number   is Natural range 0 .. 59;
   subtype Second_Number   is Natural range 0 .. 59;
   subtype Second_Duration is Day_Duration range 0.0 .. 1.0;

   function Year (Date      : in Time;
                  Time_Zone : in Time_Zones.Time_Offset := 0)
     return Year_Number;

   function Month (Date      : in Time;
                   Time_Zone : in Time_Zones.Time_Offset := 0)
     return Month_Number;

   function Day (Date      : in Time;
                 Time_Zone : in Time_Zones.Time_Offset := 0)
     return Day_Number;

   function Hour (Date      : in Time;
                  Time_Zone : in Time_Zones.Time_Offset := 0)
     return Hour_Number;

   function Minute (Date      : in Time;
                    Time_Zone : in Time_Zones.Time_Offset := 0)
     return Minute_Number;

   function Second (Date : in Time) return Second_Number;

   function Sub_Second (Date : in Time) return Second_Duration;

   function Seconds_Of (Hour       : in Hour_Number;
                        Minute     : in Minute_Number;
                        Second     : in Second_Number   := 0;
                        Sub_Second : in Second_Duration := 0.0)
     return Day_Duration;

   procedure Split (Seconds    : in     Day_Duration;
                    Hour       :    out Hour_Number;
                    Minute     :    out Minute_Number;
                    Second     :    out Second_Number;
                    Sub_Second :    out Second_Duration);

   function Time_Of (Year        : in Year_Number;
                     Month       : in Month_Number;
                     Day         : in Day_Number;
                     Hour        : in Hour_Number;
                     Minute      : in Minute_Number;
                     Second      : in Second_Number;
                     Sub_Second  : in Second_Duration        := 0.0;
                     Leap_Second : in Boolean                := False;
                     Time_Zone   : in Time_Zones.Time_Offset := 0)
     return Time;

   function Time_Of (Year        : in Year_Number;
                     Month       : in Month_Number;
                     Day         : in Day_Number;
                     Seconds     : in Day_Duration           := 0.0;
                     Leap_Second : in Boolean                := False;
                     Time_Zone   : in Time_Zones.Time_Offset := 0)
     return Time;

   procedure Split (Date       : in     Time;
                    Year       :    out Year_Number;
                    Month      :    out Month_Number;
                    Day        :    out Day_Number;
                    Hour       :    out Hour_Number;
                    Minute     :    out Minute_Number;
                    Second     :    out Second_Number;
                    Sub_Second :    out Second_Duration;
                    Time_Zone  : in     Time_Zones.Time_Offset := 0);

   procedure Split (Date        : in     Time;
                    Year        :    out Year_Number;
                    Month       :    out Month_Number;
                    Day         :    out Day_Number;
                    Hour        :    out Hour_Number;
                    Minute      :    out Minute_Number;
                    Second      :    out Second_Number;
                    Sub_Second  :    out Second_Duration;
                    Leap_Second :    out Boolean;
                    Time_Zone   : in     Time_Zones.Time_Offset := 0);

   procedure Split (Date        : in     Time;
                    Year        :    out Year_Number;
                    Month       :    out Month_Number;
                    Day         :    out Day_Number;
                    Seconds     :    out Day_Duration;
                    Leap_Second :    out Boolean;
                    Time_Zone   : in     Time_Zones.Time_Offset := 0);

   --   Simple image and value:

   function Image (Date                  : in Time;
                   Include_Time_Fraction : in Boolean := False;
                   Time_Zone             : in Time_Zones.Time_Offset := 0)
     return String;

   function Value (Date      : in String;
                   Time_Zone : in Time_Zones.Time_Offset := 0)
     return Time;

   function Image (Elapsed_Time          : in Duration;
                   Include_Time_Fraction : in Boolean := False)
     return String;

   function Value (Elapsed_Time : in String) return Duration;

end Ada.Calendar.Formatting;