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Diffstat (limited to 'gcc/ada/libgnat/a-sequio.ads')
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1 files changed, 160 insertions, 0 deletions
diff --git a/gcc/ada/libgnat/a-sequio.ads b/gcc/ada/libgnat/a-sequio.ads new file mode 100644 index 0000000..6d2d568 --- /dev/null +++ b/gcc/ada/libgnat/a-sequio.ads @@ -0,0 +1,160 @@ +------------------------------------------------------------------------------ +-- -- +-- GNAT RUN-TIME COMPONENTS -- +-- -- +-- A D A . S E Q U E N T I A L _ I O -- +-- -- +-- S p e c -- +-- -- +-- Copyright (C) 1992-2017, Free Software Foundation, Inc. -- +-- -- +-- This specification is derived from the Ada Reference Manual for use with -- +-- GNAT. The copyright notice above, and the license provisions that follow -- +-- apply solely to the contents of the part following the private keyword. -- +-- -- +-- GNAT is free software; you can redistribute it and/or modify it under -- +-- terms of the GNU General Public License as published by the Free Soft- -- +-- ware Foundation; either version 3, or (at your option) any later ver- -- +-- sion. GNAT is distributed in the hope that it will be useful, but WITH- -- +-- OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY -- +-- or FITNESS FOR A PARTICULAR PURPOSE. -- +-- -- +-- As a special exception under Section 7 of GPL version 3, you are granted -- +-- additional permissions described in the GCC Runtime Library Exception, -- +-- version 3.1, as published by the Free Software Foundation. -- +-- -- +-- You should have received a copy of the GNU General Public License and -- +-- a copy of the GCC Runtime Library Exception along with this program; -- +-- see the files COPYING3 and COPYING.RUNTIME respectively. If not, see -- +-- <http://www.gnu.org/licenses/>. -- +-- -- +-- GNAT was originally developed by the GNAT team at New York University. -- +-- Extensive contributions were provided by Ada Core Technologies Inc. -- +-- -- +------------------------------------------------------------------------------ + +with Ada.IO_Exceptions; + +with System.Sequential_IO; + +generic + type Element_Type (<>) is private; + +package Ada.Sequential_IO is + + pragma Compile_Time_Warning + (Element_Type'Has_Access_Values, + "Element_Type for Sequential_IO instance has access values"); + + pragma Compile_Time_Warning + (Element_Type'Has_Tagged_Values, + "Element_Type for Sequential_IO instance has tagged values"); + + type File_Type is limited private; + + type File_Mode is (In_File, Out_File, Append_File); + + -- 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.File_IO.File_Mode'Pos (In_File) + Out_File => 2, -- System.File_IO.File_Mode'Pos (Out_File) + Append_File => 3); -- System.File_IO.File_Mode'Pos (Append_File) + + --------------------- + -- File management -- + --------------------- + + procedure Create + (File : in out File_Type; + Mode : File_Mode := Out_File; + Name : String := ""; + Form : String := ""); + + procedure Open + (File : in out File_Type; + Mode : File_Mode; + Name : String; + Form : String := ""); + + procedure Close (File : in out File_Type); + procedure Delete (File : in out File_Type); + procedure Reset (File : in out File_Type; Mode : File_Mode); + procedure Reset (File : in out File_Type); + + function Mode (File : File_Type) return File_Mode; + function Name (File : File_Type) return String; + function Form (File : File_Type) return String; + + function Is_Open (File : File_Type) return Boolean; + + procedure Flush (File : File_Type); + + --------------------------------- + -- Input and output operations -- + --------------------------------- + + procedure Read (File : File_Type; Item : out Element_Type); + procedure Write (File : File_Type; Item : Element_Type); + + function End_Of_File (File : 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 + + -- The following procedures have a File_Type formal of mode IN OUT because + -- they may close the original file. The Close operation may raise an + -- exception, but in that case we want any assignment to the formal to + -- be effective anyway, so it must be passed by reference (or the caller + -- will be left with a dangling pointer). + + pragma Export_Procedure + (Internal => Close, + External => "", + Mechanism => Reference); + pragma Export_Procedure + (Internal => Delete, + External => "", + Mechanism => Reference); + pragma Export_Procedure + (Internal => Reset, + External => "", + Parameter_Types => (File_Type), + Mechanism => Reference); + pragma Export_Procedure + (Internal => Reset, + External => "", + Parameter_Types => (File_Type, File_Mode), + Mechanism => (File => Reference)); + + type File_Type is new System.Sequential_IO.File_Type; + + -- All subprograms are inlined + + pragma Inline (Close); + pragma Inline (Create); + pragma Inline (Delete); + pragma Inline (End_Of_File); + pragma Inline (Form); + pragma Inline (Is_Open); + pragma Inline (Mode); + pragma Inline (Name); + pragma Inline (Open); + pragma Inline (Read); + pragma Inline (Reset); + pragma Inline (Write); + +end Ada.Sequential_IO; |