gcc/ada/a-ztdeio.adb

   1 ------------------------------------------------------------------------------
   2 --                                                                          --
   3 --                         GNAT RUN-TIME COMPONENTS                         --
   4 --                                                                          --
   5 --      A D A . W I D E _ W I D E _ T E X T _ I O . D E C I M A L _ I O     --
   6 --                                                                          --
   7 --                                 B o d y                                  --
   8 --                                                                          --
   9 --          Copyright (C) 1992-2005 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_Wide_Text_IO.Decimal_Aux;
  35 with System.WCh_Con; use System.WCh_Con;
  36 with System.WCh_WtS; use System.WCh_WtS;
  37
  38 package body Ada.Wide_Wide_Text_IO.Decimal_IO is
  39
  40    subtype TFT is Ada.Wide_Wide_Text_IO.File_Type;
  41    --  File type required for calls to routines in Aux
  42
  43    package Aux renames Ada.Wide_Wide_Text_IO.Decimal_Aux;
  44
  45    Scale : constant Integer := Num'Scale;
  46
  47    ---------
  48    -- Get --
  49    ---------
  50
  51    procedure Get
  52      (File  : File_Type;
  53       Item  : out Num;
  54       Width : Field := 0)
  55    is
  56    begin
  57       if Num'Size > Integer'Size then
  58          Item := Num (Aux.Get_LLD (TFT (File), Width, Scale));
  59          --  Item := Num'Fixed_Value (Aux.Get_LLD (TFT (File), Width, Scale));
  60          --  above is what we should write, but gets assert error ???
  61
  62       else
  63          Item := Num (Aux.Get_Dec (TFT (File), Width, Scale));
  64          --  Item := Num'Fixed_Value (Aux.Get_Dec (TFT (File), Width, Scale));
  65          --  above is what we should write, but gets assert error ???
  66       end if;
  67
  68    exception
  69       when Constraint_Error => raise Data_Error;
  70    end Get;
  71
  72    procedure Get
  73      (Item  : out Num;
  74       Width : Field := 0)
  75    is
  76    begin
  77       Get (Current_Input, Item, Width);
  78    end Get;
  79
  80    procedure Get
  81      (From : Wide_Wide_String;
  82       Item : out Num;
  83       Last : out Positive)
  84    is
  85       S : constant String := Wide_Wide_String_To_String (From, WCEM_Upper);
  86       --  String on which we do the actual conversion. Note that the method
  87       --  used for wide character encoding is irrelevant, since if there is
  88       --  a character outside the Standard.Character range then the call to
  89       --  Aux.Gets will raise Data_Error in any case.
  90
  91    begin
  92       if Num'Size > Integer'Size then
  93          --  Item := Num'Fixed_Value
  94          --  should write above, but gets assert error ???
  95          Item := Num
  96                    (Aux.Gets_LLD (S, Last'Unrestricted_Access, Scale));
  97       else
  98          --  Item := Num'Fixed_Value
  99          --  should write above, but gets assert error ???
 100          Item := Num
 101                    (Aux.Gets_Dec (S, Last'Unrestricted_Access, Scale));
 102       end if;
 103
 104    exception
 105       when Constraint_Error => raise Data_Error;
 106    end Get;
 107
 108    ---------
 109    -- Put --
 110    ---------
 111
 112    procedure Put
 113      (File : File_Type;
 114       Item : Num;
 115       Fore : Field := Default_Fore;
 116       Aft  : Field := Default_Aft;
 117       Exp  : Field := Default_Exp)
 118    is
 119    begin
 120       if Num'Size > Integer'Size then
 121          Aux.Put_LLD
 122 --           (TFT (File), Long_Long_Integer'Integer_Value (Item),
 123 --  ???
 124            (TFT (File), Long_Long_Integer (Item),
 125             Fore, Aft, Exp, Scale);
 126       else
 127          Aux.Put_Dec
 128 --           (TFT (File), Integer'Integer_Value (Item), Fore, Aft, Exp, Scale);
 129 --  ???
 130            (TFT (File), Integer (Item), Fore, Aft, Exp, Scale);
 131
 132       end if;
 133    end Put;
 134
 135    procedure Put
 136      (Item : Num;
 137       Fore : Field := Default_Fore;
 138       Aft  : Field := Default_Aft;
 139       Exp  : Field := Default_Exp)
 140    is
 141       pragma Unreferenced (Fore);
 142       --  ??? how come this is unreferenced, sounds wrong ???
 143    begin
 144       Put (Current_Output, Item, Aft, Exp);
 145    end Put;
 146
 147    procedure Put
 148      (To   : out Wide_Wide_String;
 149       Item : Num;
 150       Aft  : Field := Default_Aft;
 151       Exp  : Field := Default_Exp)
 152    is
 153       S : String (To'First .. To'Last);
 154
 155    begin
 156       if Num'Size > Integer'Size then
 157 --       Aux.Puts_LLD
 158 --         (S, Long_Long_Integer'Integer_Value (Item), Aft, Exp, Scale);
 159 --  ???
 160          Aux.Puts_LLD
 161            (S, Long_Long_Integer (Item), Aft, Exp, Scale);
 162       else
 163 --       Aux.Puts_Dec (S, Integer'Integer_Value (Item), Aft, Exp, Scale);
 164 --  ???
 165          Aux.Puts_Dec (S, Integer (Item), Aft, Exp, Scale);
 166       end if;
 167
 168       for J in S'Range loop
 169          To (J) := Wide_Wide_Character'Val (Character'Pos (S (J)));
 170       end loop;
 171    end Put;
 172
 173 end Ada.Wide_Wide_Text_IO.Decimal_IO;