From 1bc5aee63eb72b341f506ad058502cd0361f0d10 Mon Sep 17 00:00:00 2001 From: Ben Cheng Date: Tue, 25 Mar 2014 22:37:19 -0700 Subject: Initial checkin of GCC 4.9.0 from trunk (r208799). Change-Id: I48a3c08bb98542aa215912a75f03c0890e497dba --- gcc-4.9/gcc/ada/a-calend-vms.ads | 310 +++++++++++++++++++++++++++++++++++++++ 1 file changed, 310 insertions(+) create mode 100644 gcc-4.9/gcc/ada/a-calend-vms.ads (limited to 'gcc-4.9/gcc/ada/a-calend-vms.ads') diff --git a/gcc-4.9/gcc/ada/a-calend-vms.ads b/gcc-4.9/gcc/ada/a-calend-vms.ads new file mode 100644 index 000000000..744011ae0 --- /dev/null +++ b/gcc-4.9/gcc/ada/a-calend-vms.ads @@ -0,0 +1,310 @@ +------------------------------------------------------------------------------ +-- -- +-- GNAT RUN-TIME COMPONENTS -- +-- -- +-- A D A . C A L E N D A R -- +-- -- +-- S p e c -- +-- -- +-- Copyright (C) 1992-2012, 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 3, 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. -- +-- -- +-- As a special exception under Section 7 of GPL version 3, you are granted -- +-- additional permissions described in the GCC Runtime Library Exception, -- +-- version 3.1, as published by the Free Software Foundation. -- +-- -- +-- You should have received a copy of the GNU General Public License and -- +-- a copy of the GCC Runtime Library Exception along with this program; -- +-- see the files COPYING3 and COPYING.RUNTIME respectively. If not, see -- +-- . -- +-- -- +-- GNAT was originally developed by the GNAT team at New York University. -- +-- Extensive contributions were provided by Ada Core Technologies Inc. -- +-- -- +------------------------------------------------------------------------------ + +-- This is the OpenVMS version + +with System.OS_Primitives; + +package Ada.Calendar is + + 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 .. 2399; + 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; + -- Note that a value of 86_400.0 is the start of the next day + + function Clock return Time; + -- The returned time value is the number of nanoseconds since the start + -- of Ada time (1901-01-01 00:00:00.0 UTC). If leap seconds are enabled, + -- the result will contain all elapsed leap seconds since the start of + -- Ada time until now. + + 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); + -- Break down a time value into its date components set in the current + -- time zone. If Split is called on a time value created using Ada 2005 + -- Time_Of in some arbitrary time zone, the input value will always be + -- interpreted as relative to the local time zone. + + function Time_Of + (Year : Year_Number; + Month : Month_Number; + Day : Day_Number; + Seconds : Day_Duration := 0.0) return Time; + -- GNAT Note: Normally when procedure Split is called on a Time value + -- result of a call to function Time_Of, the out parameters of procedure + -- Split are identical to the in parameters of function Time_Of. However, + -- when a non-existent time of day is specified, the values for Seconds + -- may or may not be different. This may happen when Daylight Saving Time + -- (DST) is in effect, on the day when switching to DST, if Seconds + -- specifies a time of day in the hour that does not exist. For example, + -- in New York: + -- + -- Time_Of (Year => 1998, Month => 4, Day => 5, Seconds => 10740.0) + -- + -- will return a Time value T. If Split is called on T, the resulting + -- Seconds may be 14340.0 (3:59:00) instead of 10740.0 (2:59:00 being + -- a time that not exist). + + 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; + -- The first three functions will raise Time_Error if the resulting time + -- value is less than the start of Ada time in UTC or greater than the + -- end of Ada time in UTC. The last function will raise Time_Error if the + -- resulting difference cannot fit into a duration value. + + 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 (">="); + + -- Although the units are 100 nanoseconds, for the purpose of better + -- readability, this unit will be called "mili". + + Mili : constant := 10_000_000; + Mili_F : constant := 10_000_000.0; + Milis_In_Day : constant := 864_000_000_000; + Secs_In_Day : constant := 86_400; + + -- Time is represented as the number of 100-nanosecond (ns) units from the + -- system base date and time 1858-11-17 0.0 (the Smithsonian base date and + -- time for the astronomic calendar). + + -- The time value stored is typically a UTC 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. + + -- 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. + + type Time is new System.OS_Primitives.OS_Time; + + Days_In_Month : constant array (Month_Number) of Day_Number := + (31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31); + -- Days in month for non-leap year, leap year case is adjusted in code + + Invalid_Time_Zone_Offset : Long_Integer; + pragma Import (C, Invalid_Time_Zone_Offset, "__gnat_invalid_tzoff"); + + function Is_Leap (Year : Year_Number) return Boolean; + -- Determine whether a given year is leap + + ---------------------------------------------------------- + -- Target-Independent Interface to Children of Calendar -- + ---------------------------------------------------------- + + -- The following packages provide a target-independent interface to the + -- children of Calendar - Arithmetic, Conversions, Delays, Formatting and + -- Time_Zones. + + -- NOTE: Delays does not need a target independent interface because + -- VMS already has a target specific file for that package. + + --------------------------- + -- Arithmetic_Operations -- + --------------------------- + + package Arithmetic_Operations is + + function Add (Date : Time; Days : Long_Integer) return Time; + -- Add a certain number of days to a time value + + procedure Difference + (Left : Time; + Right : Time; + Days : out Long_Integer; + Seconds : out Duration; + Leap_Seconds : out Integer); + -- Calculate the difference between two time values in terms of days, + -- seconds and leap seconds elapsed. The leap seconds are not included + -- in the seconds returned. If Left is greater than Right, the returned + -- values are positive, negative otherwise. + + function Subtract (Date : Time; Days : Long_Integer) return Time; + -- Subtract a certain number of days from a time value + + end Arithmetic_Operations; + + --------------------------- + -- Conversion_Operations -- + --------------------------- + + package Conversion_Operations is + + function To_Ada_Time (Unix_Time : Long_Integer) return Time; + -- Unix to Ada Epoch conversion + + function To_Ada_Time + (tm_year : Integer; + tm_mon : Integer; + tm_day : Integer; + tm_hour : Integer; + tm_min : Integer; + tm_sec : Integer; + tm_isdst : Integer) return Time; + -- Struct tm to Ada Epoch conversion + + function To_Duration + (tv_sec : Long_Integer; + tv_nsec : Long_Integer) return Duration; + -- Struct timespec to Duration conversion + + procedure To_Struct_Timespec + (D : Duration; + tv_sec : out Long_Integer; + tv_nsec : out Long_Integer); + -- Duration to struct timespec conversion + + procedure To_Struct_Tm + (T : Time; + tm_year : out Integer; + tm_mon : out Integer; + tm_day : out Integer; + tm_hour : out Integer; + tm_min : out Integer; + tm_sec : out Integer); + -- Time to struct tm conversion + + function To_Unix_Time (Ada_Time : Time) return Long_Integer; + -- Ada to Unix Epoch conversion + + end Conversion_Operations; + + --------------------------- + -- Formatting_Operations -- + --------------------------- + + package Formatting_Operations is + + function Day_Of_Week (Date : Time) return Integer; + -- Determine which day of week Date falls on. The returned values are + -- within the range of 0 .. 6 (Monday .. Sunday). + + procedure Split + (Date : Time; + Year : out Year_Number; + Month : out Month_Number; + Day : out Day_Number; + Day_Secs : out Day_Duration; + Hour : out Integer; + Minute : out Integer; + Second : out Integer; + Sub_Sec : out Duration; + Leap_Sec : out Boolean; + Use_TZ : Boolean; + Is_Historic : Boolean; + Time_Zone : Long_Integer); + pragma Export (Ada, Split, "__gnat_split"); + -- Split a time value into its components. If flag Is_Historic is set, + -- this routine would try to use to the best of the OS's abilities the + -- time zone offset that was or will be in effect on Date. Set Use_TZ + -- to use the local time zone (the value in Time_Zone is ignored) when + -- splitting a time value. + + function Time_Of + (Year : Year_Number; + Month : Month_Number; + Day : Day_Number; + Day_Secs : Day_Duration; + Hour : Integer; + Minute : Integer; + Second : Integer; + Sub_Sec : Duration; + Leap_Sec : Boolean; + Use_Day_Secs : Boolean; + Use_TZ : Boolean; + Is_Historic : Boolean; + Time_Zone : Long_Integer) return Time; + pragma Export (Ada, Time_Of, "__gnat_time_of"); + -- Given all the components of a date, return the corresponding time + -- value. Set Use_Day_Secs to use the value in Day_Secs, otherwise the + -- day duration will be calculated from Hour, Minute, Second and Sub_ + -- Sec. If flag Is_Historic is set, this routine would try to use to the + -- best of the OS's abilities the time zone offset that was or will be + -- in effect on the input date. Set Use_TZ to use the local time zone + -- (the value in formal Time_Zone is ignored) when building a time value + -- and to verify the validity of a requested leap second. + + end Formatting_Operations; + + --------------------------- + -- Time_Zones_Operations -- + --------------------------- + + package Time_Zones_Operations is + + function UTC_Time_Offset (Date : Time) return Long_Integer; + -- Return (in seconds) the difference between the local time zone and + -- UTC time at a specific historic date. + + end Time_Zones_Operations; + +end Ada.Calendar; -- cgit v1.2.3