gcc/ada/a-teioed.ads

   1 ------------------------------------------------------------------------------
   2 --                                                                          --
   3 --                         GNAT RUN-TIME COMPONENTS                         --
   4 --                                                                          --
   5 --                  A D A . T E X T _ I O . E D I T I N G                   --
   6 --                                                                          --
   7 --                                 S p e c                                  --
   8 --                                                                          --
   9 --                                                                          --
  10 --          Copyright (C) 1992-1997 Free Software Foundation, Inc.          --
  11 --                                                                          --
  12 -- This specification is derived from the Ada Reference Manual for use with --
  13 -- GNAT. The copyright notice above, and the license provisions that follow --
  14 -- apply solely to the  contents of the part following the private keyword. --
  15 --                                                                          --
  16 -- GNAT is free software;  you can  redistribute it  and/or modify it under --
  17 -- terms of the  GNU General Public License as published  by the Free Soft- --
  18 -- ware  Foundation;  either version 2,  or (at your option) any later ver- --
  19 -- sion.  GNAT is distributed in the hope that it will be useful, but WITH- --
  20 -- OUT ANY WARRANTY;  without even the  implied warranty of MERCHANTABILITY --
  21 -- or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License --
  22 -- for  more details.  You should have  received  a copy of the GNU General --
  23 -- Public License  distributed with GNAT;  see file COPYING.  If not, write --
  24 -- to  the Free Software Foundation,  59 Temple Place - Suite 330,  Boston, --
  25 -- MA 02111-1307, USA.                                                      --
  26 --                                                                          --
  27 -- As a special exception,  if other files  instantiate  generics from this --
  28 -- unit, or you link  this unit with other files  to produce an executable, --
  29 -- this  unit  does not  by itself cause  the resulting  executable  to  be --
  30 -- covered  by the  GNU  General  Public  License.  This exception does not --
  31 -- however invalidate  any other reasons why  the executable file  might be --
  32 -- covered by the  GNU Public License.                                      --
  33 --                                                                          --
  34 -- GNAT was originally developed  by the GNAT team at  New York University. --
  35 -- It is now maintained by Ada Core Technologies Inc (http://www.gnat.com). --
  36 --                                                                          --
  37 ------------------------------------------------------------------------------
  38
  39 package Ada.Text_IO.Editing is
  40
  41    type Picture is private;
  42
  43    function Valid
  44      (Pic_String      : in String;
  45       Blank_When_Zero : in Boolean := False)
  46       return            Boolean;
  47
  48    function To_Picture
  49      (Pic_String      : in String;
  50       Blank_When_Zero : in Boolean := False)
  51       return            Picture;
  52
  53    function Pic_String      (Pic : in Picture) return String;
  54    function Blank_When_Zero (Pic : in Picture) return Boolean;
  55
  56    Max_Picture_Length : constant := 64;
  57
  58    Picture_Error : exception;
  59
  60    Default_Currency   : constant String    := "$";
  61    Default_Fill       : constant Character := ' ';
  62    Default_Separator  : constant Character := ',';
  63    Default_Radix_Mark : constant Character := '.';
  64
  65    generic
  66       type Num is delta <> digits <>;
  67       Default_Currency   : in String := Editing.Default_Currency;
  68       Default_Fill       : in Character := Editing.Default_Fill;
  69       Default_Separator  : in Character := Editing.Default_Separator;
  70       Default_Radix_Mark : in Character := Editing.Default_Radix_Mark;
  71
  72    package Decimal_Output is
  73
  74       function Length
  75         (Pic      : in Picture;
  76          Currency : in String := Default_Currency)
  77          return     Natural;
  78
  79       function Valid
  80         (Item     : Num;
  81          Pic      : in Picture;
  82          Currency : in String := Default_Currency)
  83          return     Boolean;
  84
  85       function Image
  86         (Item       : Num;
  87          Pic        : in Picture;
  88          Currency   : in String    := Default_Currency;
  89          Fill       : in Character := Default_Fill;
  90          Separator  : in Character := Default_Separator;
  91          Radix_Mark : in Character := Default_Radix_Mark)
  92          return       String;
  93
  94       procedure Put
  95         (File       : in Ada.Text_IO.File_Type;
  96          Item       : Num;
  97          Pic        : in Picture;
  98          Currency   : in String    := Default_Currency;
  99          Fill       : in Character := Default_Fill;
 100          Separator  : in Character := Default_Separator;
 101          Radix_Mark : in Character := Default_Radix_Mark);
 102
 103       procedure Put
 104         (Item       : Num;
 105          Pic        : in Picture;
 106          Currency   : in String    := Default_Currency;
 107          Fill       : in Character := Default_Fill;
 108          Separator  : in Character := Default_Separator;
 109          Radix_Mark : in Character := Default_Radix_Mark);
 110
 111       procedure Put
 112         (To         : out String;
 113          Item       : Num;
 114          Pic        : in Picture;
 115          Currency   : in String    := Default_Currency;
 116          Fill       : in Character := Default_Fill;
 117          Separator  : in Character := Default_Separator;
 118          Radix_Mark : in Character := Default_Radix_Mark);
 119
 120    end Decimal_Output;
 121
 122 private
 123
 124    MAX_PICSIZE      : constant := 50;
 125    MAX_MONEYSIZE    : constant := 10;
 126    Invalid_Position : constant := -1;
 127
 128    subtype Pic_Index is Natural range 0 .. MAX_PICSIZE;
 129
 130    type Picture_Record (Length : Pic_Index := 0) is record
 131       Expanded : String (1 .. Length);
 132    end record;
 133
 134    type Format_Record is record
 135       Picture              : Picture_Record;
 136       --  Read only
 137
 138       Blank_When_Zero      : Boolean;
 139       --  Read/write
 140
 141       Original_BWZ         : Boolean;
 142
 143       --  The following components get written
 144
 145       Star_Fill            : Boolean := False;
 146
 147       Radix_Position       : Integer := Invalid_Position;
 148
 149       Sign_Position,
 150       Second_Sign          : Integer := Invalid_Position;
 151
 152       Start_Float,
 153       End_Float            : Integer := Invalid_Position;
 154
 155       Start_Currency,
 156       End_Currency         : Integer := Invalid_Position;
 157
 158       Max_Leading_Digits   : Integer := 0;
 159
 160       Max_Trailing_Digits  : Integer := 0;
 161
 162       Max_Currency_Digits  : Integer := 0;
 163
 164       Floater              : Character := '!';
 165       --  Initialized to illegal value
 166
 167    end record;
 168
 169    type Picture is record
 170       Contents : Format_Record;
 171    end record;
 172
 173    type Number_Attributes is record
 174       Negative     : Boolean := False;
 175
 176       Has_Fraction : Boolean := False;
 177
 178       Start_Of_Int,
 179       End_Of_Int,
 180       Start_Of_Fraction,
 181       End_Of_Fraction : Integer := Invalid_Position;    -- invalid value
 182    end record;
 183
 184    function Parse_Number_String (Str : String) return Number_Attributes;
 185    --  Assumed format is 'IMAGE or Fixed_IO.Put format (depends on no
 186    --  trailing blanks...)
 187
 188    procedure Precalculate (Pic : in out Format_Record);
 189    --  Precalculates fields from the user supplied data
 190
 191    function Format_Number
 192      (Pic                 : Format_Record;
 193       Number              : String;
 194       Currency_Symbol     : String;
 195       Fill_Character      : Character;
 196       Separator_Character : Character;
 197       Radix_Point         : Character)
 198       return                String;
 199    --  Formats number according to Pic
 200
 201    function Expand (Picture : in String) return String;
 202
 203 end Ada.Text_IO.Editing;