gcc/ada/a-wtflio.adb

   1 ------------------------------------------------------------------------------
   2 --                                                                          --
   3 --                         GNAT RUN-TIME 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 --          Copyright (C) 1992-2006, Free Software Foundation, Inc.         --
  10 --                                                                          --
  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 2,  or (at your option) any later ver- --
  14 -- sion.  GNAT is distributed in the hope that it will be useful, but WITH- --
  15 -- OUT ANY WARRANTY;  without even the  implied warranty of MERCHANTABILITY --
  16 -- or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License --
  17 -- for  more details.  You should have  received  a copy of the GNU General --
  18 -- Public License  distributed with GNAT;  see file COPYING.  If not, write --
  19 -- to  the  Free Software Foundation,  51  Franklin  Street,  Fifth  Floor, --
  20 -- Boston, MA 02110-1301, USA.                                              --
  21 --                                                                          --
  22 -- As a special exception,  if other files  instantiate  generics from this --
  23 -- unit, or you link  this unit with other files  to produce an executable, --
  24 -- this  unit  does not  by itself cause  the resulting  executable  to  be --
  25 -- covered  by the  GNU  General  Public  License.  This exception does not --
  26 -- however invalidate  any other reasons why  the executable file  might be --
  27 -- covered by the  GNU Public License.                                      --
  28 --                                                                          --
  29 -- GNAT was originally developed  by the GNAT team at  New York University. --
  30 -- Extensive contributions were provided by Ada Core Technologies Inc.      --
  31 --                                                                          --
  32 ------------------------------------------------------------------------------
  33
  34 with Ada.Wide_Text_IO.Float_Aux;
  35
  36 with System.WCh_Con; use System.WCh_Con;
  37 with System.WCh_WtS; use System.WCh_WtS;
  38
  39 package body Ada.Wide_Text_IO.Float_IO is
  40
  41    subtype TFT is Ada.Wide_Text_IO.File_Type;
  42    --  File type required for calls to routines in Aux
  43
  44    package Aux renames Ada.Wide_Text_IO.Float_Aux;
  45
  46    ---------
  47    -- Get --
  48    ---------
  49
  50    procedure Get
  51      (File  : File_Type;
  52       Item  : out Num;
  53       Width : Field := 0)
  54    is
  55    begin
  56       Aux.Get (TFT (File), Long_Long_Float (Item), Width);
  57
  58    exception
  59       when Constraint_Error => raise Data_Error;
  60    end Get;
  61
  62    procedure Get
  63      (Item  : out Num;
  64       Width : Field := 0)
  65    is
  66    begin
  67       Get (Current_Input, Item, Width);
  68    end Get;
  69
  70    procedure Get
  71      (From : Wide_String;
  72       Item : out Num;
  73       Last : out Positive)
  74    is
  75       S : constant String := Wide_String_To_String (From, WCEM_Upper);
  76       --  String on which we do the actual conversion. Note that the method
  77       --  used for wide character encoding is irrelevant, since if there is
  78       --  a character outside the Standard.Character range then the call to
  79       --  Aux.Gets will raise Data_Error in any case.
  80
  81    begin
  82       Aux.Gets (S, Long_Long_Float (Item), Last);
  83
  84    exception
  85       when Constraint_Error => raise Data_Error;
  86    end Get;
  87
  88    ---------
  89    -- Put --
  90    ---------
  91
  92    procedure Put
  93      (File : File_Type;
  94       Item : Num;
  95       Fore : Field := Default_Fore;
  96       Aft  : Field := Default_Aft;
  97       Exp  : Field := Default_Exp)
  98    is
  99    begin
 100       Aux.Put (TFT (File), Long_Long_Float (Item), Fore, Aft, Exp);
 101    end Put;
 102
 103    procedure Put
 104      (Item : Num;
 105       Fore : Field := Default_Fore;
 106       Aft  : Field := Default_Aft;
 107       Exp  : Field := Default_Exp)
 108    is
 109    begin
 110       Put (Current_Output, Item, Fore, Aft, Exp);
 111    end Put;
 112
 113    procedure Put
 114      (To   : out Wide_String;
 115       Item : Num;
 116       Aft  : Field := Default_Aft;
 117       Exp  : Field := Default_Exp)
 118    is
 119       S : String (To'First .. To'Last);
 120
 121    begin
 122       Aux.Puts (S, Long_Long_Float (Item), Aft, Exp);
 123
 124       for J in S'Range loop
 125          To (J) := Wide_Character'Val (Character'Pos (S (J)));
 126       end loop;
 127    end Put;
 128
 129 end Ada.Wide_Text_IO.Float_IO;