88 lines
4.3 KiB
Ada
88 lines
4.3 KiB
Ada
------------------------------------------------------------------------------
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-- --
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-- GNAT RUN-TIME COMPONENTS --
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-- --
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-- A D A . S T R E A M S --
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-- --
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-- S p e c --
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-- --
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-- Copyright (C) 1992-2014, Free Software Foundation, Inc. --
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-- --
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-- This specification is derived from the Ada Reference Manual for use with --
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-- GNAT. The copyright notice above, and the license provisions that follow --
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-- apply solely to the contents of the part following the private keyword. --
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-- --
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-- GNAT is free software; you can redistribute it and/or modify it under --
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-- terms of the GNU General Public License as published by the Free Soft- --
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-- ware Foundation; either version 3, or (at your option) any later ver- --
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-- sion. GNAT is distributed in the hope that it will be useful, but WITH- --
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-- OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY --
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-- or FITNESS FOR A PARTICULAR PURPOSE. --
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-- --
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-- As a special exception under Section 7 of GPL version 3, you are granted --
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-- additional permissions described in the GCC Runtime Library Exception, --
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-- version 3.1, as published by the Free Software Foundation. --
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-- --
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-- You should have received a copy of the GNU General Public License and --
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-- a copy of the GCC Runtime Library Exception along with this program; --
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-- see the files COPYING3 and COPYING.RUNTIME respectively. If not, see --
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-- <http://www.gnu.org/licenses/>. --
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-- --
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-- GNAT was originally developed by the GNAT team at New York University. --
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-- Extensive contributions were provided by Ada Core Technologies Inc. --
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-- --
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------------------------------------------------------------------------------
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package Ada.Streams is
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pragma Pure;
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type Root_Stream_Type is abstract tagged limited private;
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pragma Preelaborable_Initialization (Root_Stream_Type);
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type Stream_Element is mod 2 ** Standard'Storage_Unit;
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type Stream_Element_Offset is new Long_Long_Integer;
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-- Stream_Element_Offset needs 64 bits to accomodate large stream files.
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-- However, rather than make this explicitly 64-bits we derive from
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-- Long_Long_Integer. In normal usage this will have the same effect.
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-- But in the case of CodePeer with a target configuration file with a
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-- maximum integer size of 32, it allows analysis of this unit.
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subtype Stream_Element_Count is
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Stream_Element_Offset range 0 .. Stream_Element_Offset'Last;
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type Stream_Element_Array is
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array (Stream_Element_Offset range <>) of aliased Stream_Element;
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procedure Read
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(Stream : in out Root_Stream_Type;
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Item : out Stream_Element_Array;
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Last : out Stream_Element_Offset)
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is abstract;
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procedure Write
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(Stream : in out Root_Stream_Type;
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Item : Stream_Element_Array)
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is abstract;
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private
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type Root_Stream_Type is abstract tagged limited null record;
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-- Stream attributes for Stream_Element_Array: trivially call the
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-- corresponding stream primitive for the whole array, instead of doing
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-- so element by element.
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procedure Read_SEA
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(S : access Root_Stream_Type'Class;
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V : out Stream_Element_Array);
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procedure Write_SEA
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(S : access Root_Stream_Type'Class;
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V : Stream_Element_Array);
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for Stream_Element_Array'Read use Read_SEA;
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for Stream_Element_Array'Write use Write_SEA;
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end Ada.Streams;
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