1------------------------------------------------------------------------------ 2-- -- 3-- GNAT RUN-TIME COMPONENTS -- 4-- -- 5-- A D A . S T R E A M S -- 6-- -- 7-- S p e c -- 8-- -- 9-- Copyright (C) 1992-2013, Free Software Foundation, Inc. -- 10-- -- 11-- This specification is derived from the Ada Reference Manual for use with -- 12-- GNAT. The copyright notice above, and the license provisions that follow -- 13-- apply solely to the contents of the part following the private keyword. -- 14-- -- 15-- GNAT is free software; you can redistribute it and/or modify it under -- 16-- terms of the GNU General Public License as published by the Free Soft- -- 17-- ware Foundation; either version 3, or (at your option) any later ver- -- 18-- sion. GNAT is distributed in the hope that it will be useful, but WITH- -- 19-- OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY -- 20-- or FITNESS FOR A PARTICULAR PURPOSE. -- 21-- -- 22-- As a special exception under Section 7 of GPL version 3, you are granted -- 23-- additional permissions described in the GCC Runtime Library Exception, -- 24-- version 3.1, as published by the Free Software Foundation. -- 25-- -- 26-- You should have received a copy of the GNU General Public License and -- 27-- a copy of the GCC Runtime Library Exception along with this program; -- 28-- see the files COPYING3 and COPYING.RUNTIME respectively. If not, see -- 29-- <http://www.gnu.org/licenses/>. -- 30-- -- 31-- GNAT was originally developed by the GNAT team at New York University. -- 32-- Extensive contributions were provided by Ada Core Technologies Inc. -- 33-- -- 34------------------------------------------------------------------------------ 35 36package Ada.Streams is 37 pragma Pure; 38 39 type Root_Stream_Type is abstract tagged limited private; 40 pragma Preelaborable_Initialization (Root_Stream_Type); 41 42 type Stream_Element is mod 2 ** Standard'Storage_Unit; 43 44 type Stream_Element_Offset is range 45 -(2 ** (Standard'Address_Size - 1)) .. 46 +(2 ** (Standard'Address_Size - 1)) - 1; 47 48 subtype Stream_Element_Count is 49 Stream_Element_Offset range 0 .. Stream_Element_Offset'Last; 50 51 type Stream_Element_Array is 52 array (Stream_Element_Offset range <>) of aliased Stream_Element; 53 54 procedure Read 55 (Stream : in out Root_Stream_Type; 56 Item : out Stream_Element_Array; 57 Last : out Stream_Element_Offset) 58 is abstract; 59 60 procedure Write 61 (Stream : in out Root_Stream_Type; 62 Item : Stream_Element_Array) 63 is abstract; 64 65private 66 67 type Root_Stream_Type is abstract tagged limited null record; 68 69 -- Stream attributes for Stream_Element_Array: trivially call the 70 -- corresponding stream primitive for the whole array, instead of doing 71 -- so element by element. 72 73 procedure Read_SEA 74 (S : access Root_Stream_Type'Class; 75 V : out Stream_Element_Array); 76 77 procedure Write_SEA 78 (S : access Root_Stream_Type'Class; 79 V : Stream_Element_Array); 80 81 for Stream_Element_Array'Read use Read_SEA; 82 for Stream_Element_Array'Write use Write_SEA; 83 84end Ada.Streams; 85