gcc/ada/a-wtflio.adb

   1 ------------------------------------------------------------------------------
   2 --                                                                          --
   3 --                         GNAT RUNTIME COMPONENTS                          --
   4 --                                                                          --
   5 --             A D A . W I D E _ T E X T _ I O . F L O A T _ I O            --
   6 --                                                                          --
   7 --                                 B o d y                                  --
   8 --                                                                          --
   9 --                            $Revision: 1.5 $
  10 --                                                                          --
  11 --          Copyright (C) 1992-2000 Free Software Foundation, Inc.          --
  12 --                                                                          --
  13 -- GNAT is free software;  you can  redistribute it  and/or modify it under --
  14 -- terms of the  GNU General Public License as published  by the Free Soft- --
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  19 -- for  more details.  You should have  received  a copy of the GNU General --
  20 -- Public License  distributed with GNAT;  see file COPYING.  If not, write --
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  22 -- MA 02111-1307, USA.                                                      --
  23 --                                                                          --
  24 -- As a special exception,  if other files  instantiate  generics from this --
  25 -- unit, or you link  this unit with other files  to produce an executable, --
  26 -- this  unit  does not  by itself cause  the resulting  executable  to  be --
  27 -- covered  by the  GNU  General  Public  License.  This exception does not --
  28 -- however invalidate  any other reasons why  the executable file  might be --
  29 -- covered by the  GNU Public License.                                      --
  30 --                                                                          --
  31 -- GNAT was originally developed  by the GNAT team at  New York University. --
  32 -- It is now maintained by Ada Core Technologies Inc (http://www.gnat.com). --
  33 --                                                                          --
  34 ------------------------------------------------------------------------------
  35
  36 with Ada.Wide_Text_IO.Float_Aux;
  37 with System.WCh_Con; use System.WCh_Con;
  38 with System.WCh_WtS; use System.WCh_WtS;
  39
  40 package body Ada.Wide_Text_IO.Float_IO is
  41
  42    subtype TFT is Ada.Wide_Text_IO.File_Type;
  43    --  File type required for calls to routines in Aux
  44
  45    package Aux renames Ada.Wide_Text_IO.Float_Aux;
  46
  47    ---------
  48    -- Get --
  49    ---------
  50
  51    procedure Get
  52      (File  : in File_Type;
  53       Item  : out Num;
  54       Width : in Field := 0)
  55    is
  56    begin
  57       Aux.Get (TFT (File), Long_Long_Float (Item), Width);
  58
  59    exception
  60       when Constraint_Error => raise Data_Error;
  61    end Get;
  62
  63    procedure Get
  64      (Item  : out Num;
  65       Width : in Field := 0)
  66    is
  67    begin
  68       Get (Current_Input, Item, Width);
  69    end Get;
  70
  71    procedure Get
  72      (From : in Wide_String;
  73       Item : out Num;
  74       Last : out Positive)
  75    is
  76       S : constant String := Wide_String_To_String (From, WCEM_Upper);
  77       --  String on which we do the actual conversion. Note that the method
  78       --  used for wide character encoding is irrelevant, since if there is
  79       --  a character outside the Standard.Character range then the call to
  80       --  Aux.Gets will raise Data_Error in any case.
  81
  82    begin
  83       Aux.Gets (S, Long_Long_Float (Item), Last);
  84
  85    exception
  86       when Constraint_Error => raise Data_Error;
  87    end Get;
  88
  89    ---------
  90    -- Put --
  91    ---------
  92
  93    procedure Put
  94      (File : in File_Type;
  95       Item : in Num;
  96       Fore : in Field := Default_Fore;
  97       Aft  : in Field := Default_Aft;
  98       Exp  : in Field := Default_Exp)
  99    is
 100    begin
 101       Aux.Put (TFT (File), Long_Long_Float (Item), Fore, Aft, Exp);
 102    end Put;
 103
 104    procedure Put
 105      (Item : in Num;
 106       Fore : in Field := Default_Fore;
 107       Aft  : in Field := Default_Aft;
 108       Exp  : in Field := Default_Exp)
 109    is
 110    begin
 111       Put (Current_Output, Item, Fore, Aft, Exp);
 112    end Put;
 113
 114    procedure Put
 115      (To   : out Wide_String;
 116       Item : in Num;
 117       Aft  : in Field := Default_Aft;
 118       Exp  : in Field := Default_Exp)
 119    is
 120       S : String (To'First .. To'Last);
 121
 122    begin
 123       Aux.Puts (S, Long_Long_Float (Item), Aft, Exp);
 124
 125       for J in S'Range loop
 126          To (J) := Wide_Character'Val (Character'Pos (S (J)));
 127       end loop;
 128    end Put;
 129
 130 end Ada.Wide_Text_IO.Float_IO;