1 ------------------------------------------------------------------------------
3 -- GNAT RUNTIME COMPONENTS --
5 -- A D A . T E X T _ I O . C O M P L E X _ A U X --
9 -- Copyright (C) 1992,1993,1994,1995,1996 Free Software Foundation, Inc. --
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. --
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. --
29 -- GNAT was originally developed by the GNAT team at New York University. --
30 -- Extensive contributions were provided by Ada Core Technologies Inc. --
32 ------------------------------------------------------------------------------
34 with Ada.Text_IO.Generic_Aux; use Ada.Text_IO.Generic_Aux;
35 with Ada.Text_IO.Float_Aux;
37 with System.Img_Real; use System.Img_Real;
39 package body Ada.Text_IO.Complex_Aux is
41 package Aux renames Ada.Text_IO.Float_Aux;
49 ItemR : out Long_Long_Float;
50 ItemI : out Long_Long_Float;
53 Buf : String (1 .. Field'Last);
55 Ptr : aliased Integer;
56 Paren : Boolean := False;
59 -- General note for following code, exceptions from the calls to
60 -- Get for components of the complex value are propagated.
63 Load_Width (File, Width, Buf, Stop);
64 Gets (Buf (1 .. Stop), ItemR, ItemI, Ptr);
66 for J in Ptr + 1 .. Stop loop
67 if not Is_Blank (Buf (J)) then
77 Load (File, Buf, Ptr, '(', Paren);
78 Aux.Get (File, ItemR, 0);
80 Load (File, Buf, Ptr, ',');
81 Aux.Get (File, ItemI, 0);
85 Load (File, Buf, Ptr, ')', Paren);
100 ItemR : out Long_Long_Float;
101 ItemI : out Long_Long_Float;
108 String_Skip (From, Pos);
110 if From (Pos) = '(' then
117 Aux.Gets (From (Pos .. From'Last), ItemR, Pos);
119 String_Skip (From (Pos + 1 .. From'Last), Pos);
121 if From (Pos) = ',' then
125 Aux.Gets (From (Pos .. From'Last), ItemI, Pos);
128 String_Skip (From (Pos + 1 .. From'Last), Pos);
130 if From (Pos) /= ')' then
144 ItemR : Long_Long_Float;
145 ItemI : Long_Long_Float;
152 Aux.Put (File, ItemR, Fore, Aft, Exp);
154 Aux.Put (File, ItemI, Fore, Aft, Exp);
164 ItemR : Long_Long_Float;
165 ItemI : Long_Long_Float;
169 I_String : String (1 .. 3 * Field'Last);
170 R_String : String (1 .. 3 * Field'Last);
176 -- Both parts are initially converted with a Fore of 0
179 Set_Image_Real (ItemR, R_String, Rptr, 0, Aft, Exp);
181 Set_Image_Real (ItemI, I_String, Iptr, 0, Aft, Exp);
183 -- Check room for both parts plus parens plus comma (RM G.1.3(34))
185 if Rptr + Iptr + 3 > To'Length then
189 -- If there is room, layout result according to (RM G.1.3(31-33))
191 To (To'First) := '(';
192 To (To'First + 1 .. To'First + Rptr) := R_String (1 .. Rptr);
193 To (To'First + Rptr + 1) := ',';
196 To (To'Last - Iptr .. To'Last - 1) := I_String (1 .. Iptr);
198 for J in To'First + Rptr + 2 .. To'Last - Iptr - 1 loop
204 end Ada.Text_IO.Complex_Aux;