gcc/ada/a-wtdeio.adb

   1 ------------------------------------------------------------------------------
   2 --                                                                          --
   3 --                         GNAT RUN-TIME 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          --
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  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.Decimal_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.Decimal_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.Decimal_Aux;
  45
  46    Scale : constant Integer := Num'Scale;
  47
  48    ---------
  49    -- Get --
  50    ---------
  51
  52    procedure Get
  53      (File  : File_Type;
  54       Item  : out Num;
  55       Width : Field := 0)
  56    is
  57    begin
  58       if Num'Size > Integer'Size then
  59          Item := Num (Aux.Get_LLD (TFT (File), Width, Scale));
  60          --  Item := Num'Fixed_Value (Aux.Get_LLD (TFT (File), Width, Scale));
  61          --  above is what we should write, but gets assert error ???
  62
  63       else
  64          Item := Num (Aux.Get_Dec (TFT (File), Width, Scale));
  65          --  Item := Num'Fixed_Value (Aux.Get_Dec (TFT (File), Width, Scale));
  66          --  above is what we should write, but gets assert error ???
  67       end if;
  68
  69    exception
  70       when Constraint_Error => raise Data_Error;
  71    end Get;
  72
  73    procedure Get
  74      (Item  : out Num;
  75       Width : Field := 0)
  76    is
  77    begin
  78       Get (Current_Input, Item, Width);
  79    end Get;
  80
  81    procedure Get
  82      (From : Wide_String;
  83       Item : out Num;
  84       Last : out Positive)
  85    is
  86       S : constant String := Wide_String_To_String (From, WCEM_Upper);
  87       --  String on which we do the actual conversion. Note that the method
  88       --  used for wide character encoding is irrelevant, since if there is
  89       --  a character outside the Standard.Character range then the call to
  90       --  Aux.Gets will raise Data_Error in any case.
  91
  92    begin
  93       if Num'Size > Integer'Size then
  94          --  Item := Num'Fixed_Value
  95          --  should write above, but gets assert error ???
  96          Item := Num
  97                    (Aux.Gets_LLD (S, Last'Unrestricted_Access, Scale));
  98       else
  99          --  Item := Num'Fixed_Value
 100          --  should write above, but gets assert error ???
 101          Item := Num
 102                    (Aux.Gets_Dec (S, Last'Unrestricted_Access, Scale));
 103       end if;
 104
 105    exception
 106       when Constraint_Error => raise Data_Error;
 107    end Get;
 108
 109    ---------
 110    -- Put --
 111    ---------
 112
 113    procedure Put
 114      (File : File_Type;
 115       Item : Num;
 116       Fore : Field := Default_Fore;
 117       Aft  : Field := Default_Aft;
 118       Exp  : Field := Default_Exp)
 119    is
 120    begin
 121       if Num'Size > Integer'Size then
 122          Aux.Put_LLD
 123 --           (TFT (File), Long_Long_Integer'Integer_Value (Item),
 124 --  ???
 125            (TFT (File), Long_Long_Integer (Item),
 126             Fore, Aft, Exp, Scale);
 127       else
 128          Aux.Put_Dec
 129 --           (TFT (File), Integer'Integer_Value (Item), Fore, Aft, Exp, Scale);
 130 --  ???
 131            (TFT (File), Integer (Item), Fore, Aft, Exp, Scale);
 132
 133       end if;
 134    end Put;
 135
 136    procedure Put
 137      (Item : Num;
 138       Fore : Field := Default_Fore;
 139       Aft  : Field := Default_Aft;
 140       Exp  : Field := Default_Exp)
 141    is
 142       pragma Unreferenced (Fore);
 143       --  ??? how come this is unreferenced, sounds wrong ???
 144    begin
 145       Put (Current_Output, Item, Aft, Exp);
 146    end Put;
 147
 148    procedure Put
 149      (To   : out Wide_String;
 150       Item : Num;
 151       Aft  : Field := Default_Aft;
 152       Exp  : Field := Default_Exp)
 153    is
 154       S : String (To'First .. To'Last);
 155
 156    begin
 157       if Num'Size > Integer'Size then
 158 --       Aux.Puts_LLD
 159 --         (S, Long_Long_Integer'Integer_Value (Item), Aft, Exp, Scale);
 160 --  ???
 161          Aux.Puts_LLD
 162            (S, Long_Long_Integer (Item), Aft, Exp, Scale);
 163       else
 164 --       Aux.Puts_Dec (S, Integer'Integer_Value (Item), Aft, Exp, Scale);
 165 --  ???
 166          Aux.Puts_Dec (S, Integer (Item), Aft, Exp, Scale);
 167       end if;
 168
 169       for J in S'Range loop
 170          To (J) := Wide_Character'Val (Character'Pos (S (J)));
 171       end loop;
 172    end Put;
 173
 174 end Ada.Wide_Text_IO.Decimal_IO;