|
111
|
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;
|
