Mercurial > hg > CbC > CbC_gcc
comparison gcc/ada/libgnat/a-stream.ads @ 111:04ced10e8804
gcc 7
| author | kono |
|---|---|
| date | Fri, 27 Oct 2017 22:46:09 +0900 |
| parents | |
| children | 84e7813d76e9 |
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| 68:561a7518be6b | 111:04ced10e8804 |
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| 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) 1992-2017, 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 | |
| 36 package 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 new Long_Long_Integer; | |
| 45 -- Stream_Element_Offset needs 64 bits to accommodate large stream files. | |
| 46 -- However, rather than make this explicitly 64-bits we derive from | |
| 47 -- Long_Long_Integer. In normal usage this will have the same effect. | |
| 48 -- But in the case of CodePeer with a target configuration file with a | |
| 49 -- maximum integer size of 32, it allows analysis of this unit. | |
| 50 | |
| 51 subtype Stream_Element_Count is | |
| 52 Stream_Element_Offset range 0 .. Stream_Element_Offset'Last; | |
| 53 | |
| 54 type Stream_Element_Array is | |
| 55 array (Stream_Element_Offset range <>) of aliased Stream_Element; | |
| 56 | |
| 57 procedure Read | |
| 58 (Stream : in out Root_Stream_Type; | |
| 59 Item : out Stream_Element_Array; | |
| 60 Last : out Stream_Element_Offset) | |
| 61 is abstract; | |
| 62 | |
| 63 procedure Write | |
| 64 (Stream : in out Root_Stream_Type; | |
| 65 Item : Stream_Element_Array) | |
| 66 is abstract; | |
| 67 | |
| 68 private | |
| 69 | |
| 70 type Root_Stream_Type is abstract tagged limited null record; | |
| 71 | |
| 72 -- Stream attributes for Stream_Element_Array: trivially call the | |
| 73 -- corresponding stream primitive for the whole array, instead of doing | |
| 74 -- so element by element. | |
| 75 | |
| 76 procedure Read_SEA | |
| 77 (S : access Root_Stream_Type'Class; | |
| 78 V : out Stream_Element_Array); | |
| 79 | |
| 80 procedure Write_SEA | |
| 81 (S : access Root_Stream_Type'Class; | |
| 82 V : Stream_Element_Array); | |
| 83 | |
| 84 for Stream_Element_Array'Read use Read_SEA; | |
| 85 for Stream_Element_Array'Write use Write_SEA; | |
| 86 | |
| 87 end Ada.Streams; |