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comparison gcc/ada/libgnat/a-sequio.ads @ 111:04ced10e8804

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gcc 7
author kono
date Fri, 27 Oct 2017 22:46:09 +0900
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children 84e7813d76e9
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68:561a7518be6b 111:04ced10e8804
1 ------------------------------------------------------------------------------
2 -- --
3 -- GNAT RUN-TIME COMPONENTS --
4 -- --
5 -- A D A . S E Q U E N T I A L _ I O --
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 with Ada.IO_Exceptions;
37
38 with System.Sequential_IO;
39
40 generic
41 type Element_Type (<>) is private;
42
43 package Ada.Sequential_IO is
44
45 pragma Compile_Time_Warning
46 (Element_Type'Has_Access_Values,
47 "Element_Type for Sequential_IO instance has access values");
48
49 pragma Compile_Time_Warning
50 (Element_Type'Has_Tagged_Values,
51 "Element_Type for Sequential_IO instance has tagged values");
52
53 type File_Type is limited private;
54
55 type File_Mode is (In_File, Out_File, Append_File);
56
57 -- The following representation clause allows the use of unchecked
58 -- conversion for rapid translation between the File_Mode type
59 -- used in this package and System.File_IO.
60
61 for File_Mode use
62 (In_File => 0, -- System.File_IO.File_Mode'Pos (In_File)
63 Out_File => 2, -- System.File_IO.File_Mode'Pos (Out_File)
64 Append_File => 3); -- System.File_IO.File_Mode'Pos (Append_File)
65
66 ---------------------
67 -- File management --
68 ---------------------
69
70 procedure Create
71 (File : in out File_Type;
72 Mode : File_Mode := Out_File;
73 Name : String := "";
74 Form : String := "");
75
76 procedure Open
77 (File : in out File_Type;
78 Mode : File_Mode;
79 Name : String;
80 Form : String := "");
81
82 procedure Close (File : in out File_Type);
83 procedure Delete (File : in out File_Type);
84 procedure Reset (File : in out File_Type; Mode : File_Mode);
85 procedure Reset (File : in out File_Type);
86
87 function Mode (File : File_Type) return File_Mode;
88 function Name (File : File_Type) return String;
89 function Form (File : File_Type) return String;
90
91 function Is_Open (File : File_Type) return Boolean;
92
93 procedure Flush (File : File_Type);
94
95 ---------------------------------
96 -- Input and output operations --
97 ---------------------------------
98
99 procedure Read (File : File_Type; Item : out Element_Type);
100 procedure Write (File : File_Type; Item : Element_Type);
101
102 function End_Of_File (File : File_Type) return Boolean;
103
104 ----------------
105 -- Exceptions --
106 ----------------
107
108 Status_Error : exception renames IO_Exceptions.Status_Error;
109 Mode_Error : exception renames IO_Exceptions.Mode_Error;
110 Name_Error : exception renames IO_Exceptions.Name_Error;
111 Use_Error : exception renames IO_Exceptions.Use_Error;
112 Device_Error : exception renames IO_Exceptions.Device_Error;
113 End_Error : exception renames IO_Exceptions.End_Error;
114 Data_Error : exception renames IO_Exceptions.Data_Error;
115
116 private
117
118 -- The following procedures have a File_Type formal of mode IN OUT because
119 -- they may close the original file. The Close operation may raise an
120 -- exception, but in that case we want any assignment to the formal to
121 -- be effective anyway, so it must be passed by reference (or the caller
122 -- will be left with a dangling pointer).
123
124 pragma Export_Procedure
125 (Internal => Close,
126 External => "",
127 Mechanism => Reference);
128 pragma Export_Procedure
129 (Internal => Delete,
130 External => "",
131 Mechanism => Reference);
132 pragma Export_Procedure
133 (Internal => Reset,
134 External => "",
135 Parameter_Types => (File_Type),
136 Mechanism => Reference);
137 pragma Export_Procedure
138 (Internal => Reset,
139 External => "",
140 Parameter_Types => (File_Type, File_Mode),
141 Mechanism => (File => Reference));
142
143 type File_Type is new System.Sequential_IO.File_Type;
144
145 -- All subprograms are inlined
146
147 pragma Inline (Close);
148 pragma Inline (Create);
149 pragma Inline (Delete);
150 pragma Inline (End_Of_File);
151 pragma Inline (Form);
152 pragma Inline (Is_Open);
153 pragma Inline (Mode);
154 pragma Inline (Name);
155 pragma Inline (Open);
156 pragma Inline (Read);
157 pragma Inline (Reset);
158 pragma Inline (Write);
159
160 end Ada.Sequential_IO;