gcc/ada/a-ztcoio.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 _ IO . C O M P L E X _ I O      --
   6 --                                                                          --
   7 --                                 B o d y                                  --
   8 --                                                                          --
   9 --          Copyright (C) 1992-2009, 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 3,  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.                                     --
  17 --                                                                          --
  18 -- As a special exception under Section 7 of GPL version 3, you are granted --
  19 -- additional permissions described in the GCC Runtime Library Exception,   --
  20 -- version 3.1, as published by the Free Software Foundation.               --
  21 --                                                                          --
  22 -- You should have received a copy of the GNU General Public License and    --
  23 -- a copy of the GCC Runtime Library Exception along with this program;     --
  24 -- see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see    --
  25 -- <http://www.gnu.org/licenses/>.                                          --
  26 --                                                                          --
  27 -- GNAT was originally developed  by the GNAT team at  New York University. --
  28 -- Extensive contributions were provided by Ada Core Technologies Inc.      --
  29 --                                                                          --
  30 ------------------------------------------------------------------------------
  31
  32 with Ada.Wide_Wide_Text_IO.Complex_Aux;
  33
  34 with System.WCh_Con; use System.WCh_Con;
  35 with System.WCh_WtS; use System.WCh_WtS;
  36
  37 with Ada.Unchecked_Conversion;
  38
  39 package body Ada.Wide_Wide_Text_IO.Complex_IO is
  40
  41    package Aux renames Ada.Wide_Wide_Text_IO.Complex_Aux;
  42
  43    subtype LLF is Long_Long_Float;
  44    --  Type used for calls to routines in Aux
  45
  46    function TFT is new
  47      Ada.Unchecked_Conversion (File_Type, Ada.Wide_Wide_Text_IO.File_Type);
  48    --  This unchecked conversion is to get around a visibility bug in
  49    --  GNAT version 2.04w. It should be possible to simply use the
  50    --  subtype declared above and do normal checked conversions.
  51
  52    ---------
  53    -- Get --
  54    ---------
  55
  56    procedure Get
  57      (File  : File_Type;
  58       Item  : out Complex;
  59       Width : Field := 0)
  60    is
  61       Real_Item : Real'Base;
  62       Imag_Item : Real'Base;
  63
  64    begin
  65       Aux.Get (TFT (File), LLF (Real_Item), LLF (Imag_Item), Width);
  66       Item := (Real_Item, Imag_Item);
  67
  68    exception
  69       when Constraint_Error => raise Data_Error;
  70    end Get;
  71
  72    ---------
  73    -- Get --
  74    ---------
  75
  76    procedure Get
  77      (Item  : out Complex;
  78       Width : Field := 0)
  79    is
  80    begin
  81       Get (Current_Input, Item, Width);
  82    end Get;
  83
  84    ---------
  85    -- Get --
  86    ---------
  87
  88    procedure Get
  89      (From : Wide_Wide_String;
  90       Item : out Complex;
  91       Last : out Positive)
  92    is
  93       Real_Item : Real'Base;
  94       Imag_Item : Real'Base;
  95
  96       S : constant String := Wide_Wide_String_To_String (From, WCEM_Upper);
  97       --  String on which we do the actual conversion. Note that the method
  98       --  used for wide character encoding is irrelevant, since if there is
  99       --  a character outside the Standard.Character range then the call to
 100       --  Aux.Gets will raise Data_Error in any case.
 101
 102    begin
 103       Aux.Gets (S, LLF (Real_Item), LLF (Imag_Item), Last);
 104       Item := (Real_Item, Imag_Item);
 105
 106    exception
 107       when Data_Error => raise Constraint_Error;
 108    end Get;
 109
 110    ---------
 111    -- Put --
 112    ---------
 113
 114    procedure Put
 115      (File : File_Type;
 116       Item : Complex;
 117       Fore : Field := Default_Fore;
 118       Aft  : Field := Default_Aft;
 119       Exp  : Field := Default_Exp)
 120    is
 121    begin
 122       Aux.Put (TFT (File), LLF (Re (Item)), LLF (Im (Item)), Fore, Aft, Exp);
 123    end Put;
 124
 125    ---------
 126    -- Put --
 127    ---------
 128
 129    procedure Put
 130      (Item : Complex;
 131       Fore : Field := Default_Fore;
 132       Aft  : Field := Default_Aft;
 133       Exp  : Field := Default_Exp)
 134    is
 135    begin
 136       Put (Current_Output, Item, Fore, Aft, Exp);
 137    end Put;
 138
 139    ---------
 140    -- Put --
 141    ---------
 142
 143    procedure Put
 144      (To   : out Wide_Wide_String;
 145       Item : Complex;
 146       Aft  : Field := Default_Aft;
 147       Exp  : Field := Default_Exp)
 148    is
 149       S : String (To'First .. To'Last);
 150
 151    begin
 152       Aux.Puts (S, LLF (Re (Item)), LLF (Im (Item)), Aft, Exp);
 153
 154       for J in S'Range loop
 155          To (J) := Wide_Wide_Character'Val (Character'Pos (S (J)));
 156       end loop;
 157    end Put;
 158
 159 end Ada.Wide_Wide_Text_IO.Complex_IO;