gcc/ada/a-wtinio.adb

   1 ------------------------------------------------------------------------------
   2 --                                                                          --
   3 --                         GNAT RUN-TIME COMPONENTS                         --
   4 --                                                                          --
   5 --           A D A . W I D E _ T E X T _ I O . I N T E G E R _ I O          --
   6 --                                                                          --
   7 --                                 B o d y                                  --
   8 --                                                                          --
   9 --          Copyright (C) 1992-2009, Free Software Foundation, Inc.         --
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  11 -- GNAT is free software;  you can  redistribute it  and/or modify it under --
  12 -- terms of the  GNU General Public License as published  by the Free Soft- --
  13 -- ware  Foundation;  either version 3,  or (at your option) any later ver- --
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  16 -- or FITNESS FOR A PARTICULAR PURPOSE.                                     --
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  18 -- As a special exception under Section 7 of GPL version 3, you are granted --
  19 -- additional permissions described in the GCC Runtime Library Exception,   --
  20 -- version 3.1, as published by the Free Software Foundation.               --
  21 --                                                                          --
  22 -- You should have received a copy of the GNU General Public License and    --
  23 -- a copy of the GCC Runtime Library Exception along with this program;     --
  24 -- see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see    --
  25 -- <http://www.gnu.org/licenses/>.                                          --
  26 --                                                                          --
  27 -- GNAT was originally developed  by the GNAT team at  New York University. --
  28 -- Extensive contributions were provided by Ada Core Technologies Inc.      --
  29 --                                                                          --
  30 ------------------------------------------------------------------------------
  31
  32 with Ada.Wide_Text_IO.Integer_Aux;
  33 with System.WCh_Con; use System.WCh_Con;
  34 with System.WCh_WtS; use System.WCh_WtS;
  35
  36 package body Ada.Wide_Text_IO.Integer_IO is
  37
  38    Need_LLI : constant Boolean := Num'Base'Size > Integer'Size;
  39    --  Throughout this generic body, we distinguish between the case where type
  40    --  Integer is acceptable, and where a Long_Long_Integer is needed. This
  41    --  Boolean is used to test for these cases and since it is a constant, only
  42    --  code for the relevant case will be included in the instance.
  43
  44    subtype TFT is Ada.Wide_Text_IO.File_Type;
  45    --  File type required for calls to routines in Aux
  46
  47    package Aux renames Ada.Wide_Text_IO.Integer_Aux;
  48
  49    ---------
  50    -- Get --
  51    ---------
  52
  53    procedure Get
  54      (File  : File_Type;
  55       Item  : out Num;
  56       Width : Field := 0)
  57    is
  58    begin
  59       if Need_LLI then
  60          Aux.Get_LLI (TFT (File), Long_Long_Integer (Item), Width);
  61       else
  62          Aux.Get_Int (TFT (File), Integer (Item), Width);
  63       end if;
  64
  65    exception
  66       when Constraint_Error => raise Data_Error;
  67    end Get;
  68
  69    procedure Get
  70      (Item  : out Num;
  71       Width : Field := 0)
  72    is
  73    begin
  74       Get (Current_Input, Item, Width);
  75    end Get;
  76
  77    procedure Get
  78      (From : Wide_String;
  79       Item : out Num;
  80       Last : out Positive)
  81    is
  82       S : constant String := Wide_String_To_String (From, WCEM_Upper);
  83       --  String on which we do the actual conversion. Note that the method
  84       --  used for wide character encoding is irrelevant, since if there is
  85       --  a character outside the Standard.Character range then the call to
  86       --  Aux.Gets will raise Data_Error in any case.
  87
  88    begin
  89       if Need_LLI then
  90          Aux.Gets_LLI (S, Long_Long_Integer (Item), Last);
  91       else
  92          Aux.Gets_Int (S, Integer (Item), Last);
  93       end if;
  94
  95    exception
  96       when Constraint_Error => raise Data_Error;
  97    end Get;
  98
  99    ---------
 100    -- Put --
 101    ---------
 102
 103    procedure Put
 104      (File  : File_Type;
 105       Item  : Num;
 106       Width : Field := Default_Width;
 107       Base  : Number_Base := Default_Base)
 108    is
 109    begin
 110       if Need_LLI then
 111          Aux.Put_LLI (TFT (File), Long_Long_Integer (Item), Width, Base);
 112       else
 113          Aux.Put_Int (TFT (File), Integer (Item), Width, Base);
 114       end if;
 115    end Put;
 116
 117    procedure Put
 118      (Item  : Num;
 119       Width : Field := Default_Width;
 120       Base  : Number_Base := Default_Base)
 121    is
 122    begin
 123       Put (Current_Output, Item, Width, Base);
 124    end Put;
 125
 126    procedure Put
 127      (To   : out Wide_String;
 128       Item : Num;
 129       Base : Number_Base := Default_Base)
 130    is
 131       S : String (To'First .. To'Last);
 132
 133    begin
 134       if Need_LLI then
 135          Aux.Puts_LLI (S, Long_Long_Integer (Item), Base);
 136       else
 137          Aux.Puts_Int (S, Integer (Item), Base);
 138       end if;
 139
 140       for J in S'Range loop
 141          To (J) := Wide_Character'Val (Character'Pos (S (J)));
 142       end loop;
 143    end Put;
 144
 145 end Ada.Wide_Text_IO.Integer_IO;