projects / thirdparty / gcc.git / blame
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1 | ------------------------------------------------------------------------------ |
| 2 | -- -- | |
| 3 | -- GNAT RUN-TIME COMPONENTS -- | |
| 4 | -- -- | |
| b2834fbd | 5 | -- A D A . S T R E A M S -- |
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6 | -- -- |
| 7 | -- S p e c -- | |
| 8 | -- -- | |
| 4b490c1e | 9 | -- Copyright (C) 1992-2020, Free Software Foundation, Inc. -- |
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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- -- | |
| 748086b7 | 17 | -- ware Foundation; either version 3, or (at your option) any later ver- -- |
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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 -- | |
| 748086b7 JJ |
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/>. -- | |
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30 | -- -- |
| 31 | -- GNAT was originally developed by the GNAT team at New York University. -- | |
| 71ff80dc | 32 | -- Extensive contributions were provided by Ada Core Technologies Inc. -- |
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33 | -- -- |
| 34 | ------------------------------------------------------------------------------ | |
| 35 | ||
| d23b8f57 | 36 | package Ada.Streams is |
| 009186e0 | 37 | pragma Pure; |
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38 | |
| 39 | type Root_Stream_Type is abstract tagged limited private; | |
| 9b832db5 | 40 | pragma Preelaborable_Initialization (Root_Stream_Type); |
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41 | |
| 42 | type Stream_Element is mod 2 ** Standard'Storage_Unit; | |
| 43 | ||
| 697b781a | 44 | type Stream_Element_Offset is new Long_Long_Integer; |
| 2d249f52 | 45 | -- Stream_Element_Offset needs 64 bits to accommodate large stream files. |
| 697b781a AC |
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. | |
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50 | |
| 51 | subtype Stream_Element_Count is | |
| 52 | Stream_Element_Offset range 0 .. Stream_Element_Offset'Last; | |
| 53 | ||
| 54 | type Stream_Element_Array is | |
| 07fc65c4 | 55 | array (Stream_Element_Offset range <>) of aliased Stream_Element; |
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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; | |
| 0ae9f22f | 65 | Item : Stream_Element_Array) |
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66 | is abstract; |
| 67 | ||
| 68 | private | |
| 69 | ||
| 70 | type Root_Stream_Type is abstract tagged limited null record; | |
| 71 | ||
| b2834fbd AC |
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 | ||
| d23b8f57 | 87 | end Ada.Streams; |