1 ------------------------------------------------------------------------------
3 -- GNAT RUN-TIME COMPONENTS --
5 -- A D A . D I R E C T _ I O --
9 -- Copyright (C) 1992-2006, Free Software Foundation, Inc. --
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. --
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 2, 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. See the GNU General Public License --
21 -- for more details. You should have received a copy of the GNU General --
22 -- Public License distributed with GNAT; see file COPYING. If not, write --
23 -- to the Free Software Foundation, 51 Franklin Street, Fifth Floor, --
24 -- Boston, MA 02110-1301, USA. --
26 -- As a special exception, if other files instantiate generics from this --
27 -- unit, or you link this unit with other files to produce an executable, --
28 -- this unit does not by itself cause the resulting executable to be --
29 -- covered by the GNU General Public License. This exception does not --
30 -- however invalidate any other reasons why the executable file might be --
31 -- covered by the GNU Public License. --
33 -- GNAT was originally developed by the GNAT team at New York University. --
34 -- Extensive contributions were provided by Ada Core Technologies Inc. --
36 ------------------------------------------------------------------------------
38 with Ada.IO_Exceptions;
39 with System.Direct_IO;
40 with Interfaces.C_Streams;
43 type Element_Type is private;
45 package Ada.Direct_IO is
47 pragma Compile_Time_Warning
48 (Element_Type'Has_Access_Values,
49 "Element_Type for Direct_IO instance has access values");
51 type File_Type is limited private;
53 type File_Mode is (In_File, Inout_File, Out_File);
55 -- The following representation clause allows the use of unchecked
56 -- conversion for rapid translation between the File_Mode type
57 -- used in this package and System.File_IO.
60 (In_File => 0, -- System.File_IO.File_Mode'Pos (In_File)
61 Inout_File => 1, -- System.File_IO.File_Mode'Pos (Inout_File);
62 Out_File => 2); -- System.File_IO.File_Mode'Pos (Out_File)
64 type Count is range 0 .. System.Direct_IO.Count'Last;
66 subtype Positive_Count is Count range 1 .. Count'Last;
73 (File : in out File_Type;
74 Mode : File_Mode := Inout_File;
79 (File : in out File_Type;
84 procedure Close (File : in out File_Type);
85 procedure Delete (File : in out File_Type);
86 procedure Reset (File : in out File_Type; Mode : File_Mode);
87 procedure Reset (File : in out File_Type);
89 function Mode (File : File_Type) return File_Mode;
90 function Name (File : File_Type) return String;
91 function Form (File : File_Type) return String;
93 function Is_Open (File : File_Type) return Boolean;
95 ---------------------------------
96 -- Input and Output Operations --
97 ---------------------------------
101 Item : out Element_Type;
102 From : Positive_Count);
106 Item : out Element_Type);
111 To : Positive_Count);
115 Item : Element_Type);
117 procedure Set_Index (File : File_Type; To : Positive_Count);
119 function Index (File : File_Type) return Positive_Count;
120 function Size (File : File_Type) return Count;
122 function End_Of_File (File : File_Type) return Boolean;
128 Status_Error : exception renames IO_Exceptions.Status_Error;
129 Mode_Error : exception renames IO_Exceptions.Mode_Error;
130 Name_Error : exception renames IO_Exceptions.Name_Error;
131 Use_Error : exception renames IO_Exceptions.Use_Error;
132 Device_Error : exception renames IO_Exceptions.Device_Error;
133 End_Error : exception renames IO_Exceptions.End_Error;
134 Data_Error : exception renames IO_Exceptions.Data_Error;
137 type File_Type is new System.Direct_IO.File_Type;
139 Bytes : constant Interfaces.C_Streams.size_t :=
140 Element_Type'Max_Size_In_Storage_Elements;
141 -- Size of an element in storage units
143 pragma Inline (Close);
144 pragma Inline (Create);
145 pragma Inline (Delete);
146 pragma Inline (End_Of_File);
147 pragma Inline (Form);
148 pragma Inline (Index);
149 pragma Inline (Is_Open);
150 pragma Inline (Mode);
151 pragma Inline (Name);
152 pragma Inline (Open);
153 pragma Inline (Read);
154 pragma Inline (Reset);
155 pragma Inline (Set_Index);
156 pragma Inline (Size);
157 pragma Inline (Write);