gcc/ada/a-wtdeio.adb

   1 ------------------------------------------------------------------------------
   2 --                                                                          --
   3 --                         GNAT RUNTIME COMPONENTS                          --
   4 --                                                                          --
   5 --           A D A . 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 --                            $Revision: 1.5 $
  10 --                                                                          --
  11 --          Copyright (C) 1992-2000 Free Software Foundation, Inc.          --
  12 --                                                                          --
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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 --
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  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.Decimal_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.Decimal_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.Decimal_Aux;
  46
  47    Scale : constant Integer := Num'Scale;
  48
  49    ---------
  50    -- Get --
  51    ---------
  52
  53    procedure Get
  54      (File  : in File_Type;
  55       Item  : out Num;
  56       Width : in Field := 0)
  57    is
  58    begin
  59       if Num'Size > Integer'Size then
  60          Item := Num (Aux.Get_LLD (TFT (File), Width, Scale));
  61          --  Item := Num'Fixed_Value (Aux.Get_LLD (TFT (File), Width, Scale));
  62          --  above is what we should write, but gets assert error ???
  63
  64       else
  65          Item := Num (Aux.Get_Dec (TFT (File), Width, Scale));
  66          --  Item := Num'Fixed_Value (Aux.Get_Dec (TFT (File), Width, Scale));
  67          --  above is what we should write, but gets assert error ???
  68       end if;
  69
  70    exception
  71       when Constraint_Error => raise Data_Error;
  72    end Get;
  73
  74    procedure Get
  75      (Item  : out Num;
  76       Width : in Field := 0)
  77    is
  78    begin
  79       Get (Current_Input, Item, Width);
  80    end Get;
  81
  82    procedure Get
  83      (From : in Wide_String;
  84       Item : out Num;
  85       Last : out Positive)
  86    is
  87       S : constant String := Wide_String_To_String (From, WCEM_Upper);
  88       --  String on which we do the actual conversion. Note that the method
  89       --  used for wide character encoding is irrelevant, since if there is
  90       --  a character outside the Standard.Character range then the call to
  91       --  Aux.Gets will raise Data_Error in any case.
  92
  93    begin
  94       if Num'Size > Integer'Size then
  95          --  Item := Num'Fixed_Value
  96          --  should write above, but gets assert error ???
  97          Item := Num
  98                    (Aux.Gets_LLD (S, Last'Unrestricted_Access, Scale));
  99       else
 100          --  Item := Num'Fixed_Value
 101          --  should write above, but gets assert error ???
 102          Item := Num
 103                    (Aux.Gets_Dec (S, Last'Unrestricted_Access, Scale));
 104       end if;
 105
 106    exception
 107       when Constraint_Error => raise Data_Error;
 108    end Get;
 109
 110    ---------
 111    -- Put --
 112    ---------
 113
 114    procedure Put
 115      (File : in File_Type;
 116       Item : in Num;
 117       Fore : in Field := Default_Fore;
 118       Aft  : in Field := Default_Aft;
 119       Exp  : in Field := Default_Exp)
 120    is
 121    begin
 122       if Num'Size > Integer'Size then
 123          Aux.Put_LLD
 124 --           (TFT (File), Long_Long_Integer'Integer_Value (Item),
 125 --  ???
 126            (TFT (File), Long_Long_Integer (Item),
 127             Fore, Aft, Exp, Scale);
 128       else
 129          Aux.Put_Dec
 130 --           (TFT (File), Integer'Integer_Value (Item), Fore, Aft, Exp, Scale);
 131 --  ???
 132            (TFT (File), Integer (Item), Fore, Aft, Exp, Scale);
 133
 134       end if;
 135    end Put;
 136
 137    procedure Put
 138      (Item : in Num;
 139       Fore : in Field := Default_Fore;
 140       Aft  : in Field := Default_Aft;
 141       Exp  : in Field := Default_Exp)
 142    is
 143    begin
 144       Put (Current_Output, Item, Aft, Exp);
 145    end Put;
 146
 147    procedure Put
 148      (To   : out Wide_String;
 149       Item : in Num;
 150       Aft  : in Field := Default_Aft;
 151       Exp  : in 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_Character'Val (Character'Pos (S (J)));
 170       end loop;
 171    end Put;
 172
 173 end Ada.Wide_Text_IO.Decimal_IO;