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- ------------------------------------------------------------------------------
- -- --
- -- GNAT RUNTIME COMPONENTS --
- -- --
- -- A D A . D I R E C T _ I O --
- -- --
- -- S p e c --
- -- --
- -- $Revision: 1.11 $ --
- -- --
- -- This specification is adapted from the Ada Reference Manual for use with --
- -- GNAT. In accordance with the copyright of that document, you can freely --
- -- copy and modify this specification, provided that if you redistribute a --
- -- modified version, any changes that you have made are clearly indicated. --
- -- --
- ------------------------------------------------------------------------------
-
-
- with Ada.IO_Exceptions;
- with System.Direct_IO;
-
- generic
- type Element_Type is private;
-
- package Ada.Direct_IO is
-
- type File_Type is limited private;
-
- type File_Mode is (In_File, Inout_File, Out_File);
-
- type Count is new System.Direct_IO.Count;
-
- subtype Positive_Count is Count range 1 .. Count'Last;
-
- ---------------------
- -- File Management --
- ---------------------
-
- procedure Create
- (File : in out File_Type;
- Mode : in File_Mode := Inout_File;
- Name : in String := "";
- Form : in String := "");
-
- procedure Open
- (File : in out File_Type;
- Mode : in File_Mode;
- Name : in String;
- Form : in String := "");
-
- procedure Close (File : in out File_Type);
- procedure Delete (File : in out File_Type);
- procedure Reset (File : in out File_Type; Mode : in File_Mode);
- procedure Reset (File : in out File_Type);
-
- function Mode (File : in File_Type) return File_Mode;
- function Name (File : in File_Type) return String;
- function Form (File : in File_Type) return String;
-
- function Is_Open (File : in File_Type) return Boolean;
-
- ---------------------------------
- -- Input and Output Operations --
- ---------------------------------
-
- procedure Read
- (File : in File_Type;
- Item : out Element_Type;
- From : in Positive_Count);
-
- procedure Read
- (File : in File_Type;
- Item : out Element_Type);
-
- procedure Write
- (File : in File_Type;
- Item : in Element_Type;
- To : in Positive_Count);
-
- procedure Write
- (File : in File_Type;
- Item : in Element_Type);
-
- procedure Set_Index (File : in File_Type; To : in Positive_Count);
-
- function Index (File : in File_Type) return Positive_Count;
- function Size (File : in File_Type) return Count;
-
- function End_Of_File (File : in File_Type) return Boolean;
-
- ----------------
- -- Exceptions --
- ----------------
-
- Status_Error : exception renames IO_Exceptions.Status_Error;
- Mode_Error : exception renames IO_Exceptions.Mode_Error;
- Name_Error : exception renames IO_Exceptions.Name_Error;
- Use_Error : exception renames IO_Exceptions.Use_Error;
- Device_Error : exception renames IO_Exceptions.Device_Error;
- End_Error : exception renames IO_Exceptions.End_Error;
- Data_Error : exception renames IO_Exceptions.Data_Error;
-
- private
- type File_Type is new System.Direct_IO.File_Type;
-
- -- The following representation clause allows the use of unchecked
- -- conversion for rapid translation between the File_Mode type
- -- used in this package and System.File_IO.
-
- for File_Mode use
- (In_File => 0, -- System.Fole_IO.File_Mode'Pos (In_File)
- Inout_File => 1, -- System.File_IO.File_Mode'Pos (Inout_File);
- Out_File => 2); -- System.File_IO.File_Mode'Pos (Out_File)
-
- Bytes : constant Interfaces.C_Streams.size_t :=
- (Element_Type'Size + System.Storage_Unit - 1) /
- System.Storage_Unit;
- -- Size of an element in storage units
-
- -- All routines are inlined
-
- pragma Inline (Close);
- pragma Inline (Create);
- pragma Inline (Delete);
- pragma Inline (End_Of_File);
- pragma Inline (Form);
- pragma Inline (Index);
- pragma Inline (Is_Open);
- pragma Inline (Mode);
- pragma Inline (Name);
- pragma Inline (Open);
- pragma Inline (Read);
- pragma Inline (Reset);
- pragma Inline (Set_Index);
- pragma Inline (Size);
- pragma Inline (Write);
-
- end Ada.Direct_IO;
-