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------------------------------------------------------------------------------
-- --
-- GNAT RUN-TIME COMPONENTS --
-- --
-- A D A . T E X T _ I O . E N U M E R A T I O N _ I O --
-- --
-- B o d y --
-- --
-- Copyright (C) 1992-2015, Free Software Foundation, Inc. --
-- --
-- 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.Text_IO.Enumeration_Aux;
package body Ada.Text_IO.Enumeration_IO is
package Aux renames Ada.Text_IO.Enumeration_Aux;
---------
-- Get --
---------
procedure Get (File : File_Type; Item : out Enum) is
Buf : String (1 .. Enum'Width + 1);
Buflen : Natural;
begin
Aux.Get_Enum_Lit (File, Buf, Buflen);
declare
Buf_Str : String renames Buf (1 .. Buflen);
pragma Unsuppress (Range_Check);
begin
Item := Enum'Value (Buf_Str);
end;
exception
when Constraint_Error => raise Data_Error;
end Get;
procedure Get (Item : out Enum) is
pragma Unsuppress (Range_Check);
begin
Get (Current_In, Item);
end Get;
procedure Get
(From : String;
Item : out Enum;
Last : out Positive)
is
Start : Natural;
begin
Aux.Scan_Enum_Lit (From, Start, Last);
declare
From_Str : String renames From (Start .. Last);
pragma Unsuppress (Range_Check);
begin
Item := Enum'Value (From_Str);
end;
exception
when Constraint_Error => raise Data_Error;
end Get;
---------
-- Put --
---------
procedure Put
(File : File_Type;
Item : Enum;
Width : Field := Default_Width;
Set : Type_Set := Default_Setting)
is
begin
-- Ensure that Item is valid before attempting to retrieve the Image, to
-- prevent the possibility of out-of-bounds addressing of index or image
-- tables. Units in the run-time library are normally compiled with
-- checks suppressed, which includes instantiated generics.
if not Item'Valid then
raise Constraint_Error with "invalid enumeration value";
end if;
Aux.Put (File, Enum'Image (Item), Width, Set);
end Put;
procedure Put
(Item : Enum;
Width : Field := Default_Width;
Set : Type_Set := Default_Setting)
is
begin
Put (Current_Out, Item, Width, Set);
end Put;
procedure Put
(To : out String;
Item : Enum;
Set : Type_Set := Default_Setting)
is
begin
-- Ensure that Item is valid before attempting to retrieve the Image, to
-- prevent the possibility of out-of-bounds addressing of index or image
-- tables. Units in the run-time library are normally compiled with
-- checks suppressed, which includes instantiated generics.
if not Item'Valid then
raise Constraint_Error with "invalid enumeration value";
end if;
Aux.Puts (To, Enum'Image (Item), Set);
end Put;
end Ada.Text_IO.Enumeration_IO;
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