gcc/ada/a-wtcoio.adb

   1 ------------------------------------------------------------------------------
   2 --                                                                          --
   3 --                         GNAT RUNTIME COMPONENTS                          --
   4 --                                                                          --
   5 --           A D A . W I D E _ T E X T _ IO . C O M P L E X _ I O           --
   6 --                                                                          --
   7 --                                 B o d y                                  --
   8 --                                                                          --
   9 --   Copyright (C) 1992,1993,1994,1995,1996 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,  59 Temple Place - Suite 330,  Boston, --
  20 -- MA 02111-1307, 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.Complex_Aux;
  35 with System.WCh_Con; use System.WCh_Con;
  36 with System.WCh_WtS; use System.WCh_WtS;
  37
  38 with Ada.Unchecked_Conversion;
  39
  40 package body Ada.Wide_Text_IO.Complex_IO is
  41
  42    package Aux renames Ada.Wide_Text_IO.Complex_Aux;
  43
  44    subtype LLF is Long_Long_Float;
  45    --  Type used for calls to routines in Aux
  46
  47 --   subtype TFT is Ada.Wide_Text_IO.File_Type;
  48    --  File type required for calls to routines in Aux
  49
  50    function TFT is new
  51      Ada.Unchecked_Conversion (File_Type, Ada.Wide_Text_IO.File_Type);
  52    --  This unchecked conversion is to get around a visibility bug in
  53    --  GNAT version 2.04w. It should be possible to simply use the
  54    --  subtype declared above and do normal checked conversions.
  55
  56    ---------
  57    -- Get --
  58    ---------
  59
  60    procedure Get
  61      (File  : in  File_Type;
  62       Item  : out Complex;
  63       Width : in  Field := 0)
  64    is
  65       Real_Item  : Real'Base;
  66       Imag_Item  : Real'Base;
  67
  68    begin
  69       Aux.Get (TFT (File), LLF (Real_Item), LLF (Imag_Item), Width);
  70       Item := (Real_Item, Imag_Item);
  71
  72    exception
  73       when Constraint_Error => raise Data_Error;
  74    end Get;
  75
  76    ---------
  77    -- Get --
  78    ---------
  79
  80    procedure Get
  81      (Item  : out Complex;
  82       Width : in  Field := 0)
  83    is
  84    begin
  85       Get (Current_Input, Item, Width);
  86    end Get;
  87
  88    ---------
  89    -- Get --
  90    ---------
  91
  92    procedure Get
  93      (From : in  Wide_String;
  94       Item : out Complex;
  95       Last : out Positive)
  96    is
  97       Real_Item : Real'Base;
  98       Imag_Item : Real'Base;
  99
 100       S : constant String := Wide_String_To_String (From, WCEM_Upper);
 101       --  String on which we do the actual conversion. Note that the method
 102       --  used for wide character encoding is irrelevant, since if there is
 103       --  a character outside the Standard.Character range then the call to
 104       --  Aux.Gets will raise Data_Error in any case.
 105
 106    begin
 107       Aux.Gets (S, LLF (Real_Item), LLF (Imag_Item), Last);
 108       Item := (Real_Item, Imag_Item);
 109
 110    exception
 111       when Data_Error => raise Constraint_Error;
 112    end Get;
 113
 114    ---------
 115    -- Put --
 116    ---------
 117
 118    procedure Put
 119      (File : in File_Type;
 120       Item : in Complex;
 121       Fore : in Field := Default_Fore;
 122       Aft  : in Field := Default_Aft;
 123       Exp  : in Field := Default_Exp)
 124    is
 125    begin
 126       Aux.Put (TFT (File), LLF (Re (Item)), LLF (Im (Item)), Fore, Aft, Exp);
 127    end Put;
 128
 129    ---------
 130    -- Put --
 131    ---------
 132
 133    procedure Put
 134      (Item : in Complex;
 135       Fore : in Field := Default_Fore;
 136       Aft  : in Field := Default_Aft;
 137       Exp  : in Field := Default_Exp)
 138    is
 139    begin
 140       Put (Current_Output, Item, Fore, Aft, Exp);
 141    end Put;
 142
 143    ---------
 144    -- Put --
 145    ---------
 146
 147    procedure Put
 148      (To   : out Wide_String;
 149       Item : in  Complex;
 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       Aux.Puts (S, LLF (Re (Item)), LLF (Im (Item)), Aft, Exp);
 157
 158       for J in S'Range loop
 159          To (J) := Wide_Character'Val (Character'Pos (S (J)));
 160       end loop;
 161    end Put;
 162
 163 end Ada.Wide_Text_IO.Complex_IO;