summaryrefslogtreecommitdiff
path: root/gcc/ada/a-teioed.ads
blob: 37ad4a0d2ac2ec70fd38c963e3ea25a693591496 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
------------------------------------------------------------------------------
--                                                                          --
--                         GNAT RUN-TIME COMPONENTS                         --
--                                                                          --
--                  A D A . T E X T _ I O . E D I T I N G                   --
--                                                                          --
--                                 S p e c                                  --
--                                                                          --
--          Copyright (C) 1992-1997 Free Software Foundation, Inc.          --
--                                                                          --
-- This specification is derived from the Ada Reference Manual for use with --
-- GNAT. The copyright notice above, and the license provisions that follow --
-- apply solely to the  contents of the part following the private keyword. --
--                                                                          --
-- GNAT is free software;  you can  redistribute it  and/or modify it under --
-- terms of the  GNU General Public License as published  by the Free Soft- --
-- ware  Foundation;  either version 2,  or (at your option) any later ver- --
-- sion.  GNAT is distributed in the hope that it will be useful, but WITH- --
-- OUT ANY WARRANTY;  without even the  implied warranty of MERCHANTABILITY --
-- or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License --
-- for  more details.  You should have  received  a copy of the GNU General --
-- Public License  distributed with GNAT;  see file COPYING.  If not, write --
-- to  the Free Software Foundation,  59 Temple Place - Suite 330,  Boston, --
-- MA 02111-1307, USA.                                                      --
--                                                                          --
-- As a special exception,  if other files  instantiate  generics from this --
-- unit, or you link  this unit with other files  to produce an executable, --
-- this  unit  does not  by itself cause  the resulting  executable  to  be --
-- covered  by the  GNU  General  Public  License.  This exception does not --
-- however invalidate  any other reasons why  the executable file  might be --
-- covered by the  GNU Public License.                                      --
--                                                                          --
-- GNAT was originally developed  by the GNAT team at  New York University. --
-- Extensive contributions were provided by Ada Core Technologies Inc.      --
--                                                                          --
------------------------------------------------------------------------------

package Ada.Text_IO.Editing is

   type Picture is private;

   function Valid
     (Pic_String      : in String;
      Blank_When_Zero : in Boolean := False)
      return            Boolean;

   function To_Picture
     (Pic_String      : in String;
      Blank_When_Zero : in Boolean := False)
      return            Picture;

   function Pic_String      (Pic : in Picture) return String;
   function Blank_When_Zero (Pic : in Picture) return Boolean;

   Max_Picture_Length : constant := 64;

   Picture_Error : exception;

   Default_Currency   : constant String    := "$";
   Default_Fill       : constant Character := ' ';
   Default_Separator  : constant Character := ',';
   Default_Radix_Mark : constant Character := '.';

   generic
      type Num is delta <> digits <>;
      Default_Currency   : in String := Editing.Default_Currency;
      Default_Fill       : in Character := Editing.Default_Fill;
      Default_Separator  : in Character := Editing.Default_Separator;
      Default_Radix_Mark : in Character := Editing.Default_Radix_Mark;

   package Decimal_Output is

      function Length
        (Pic      : in Picture;
         Currency : in String := Default_Currency)
         return     Natural;

      function Valid
        (Item     : Num;
         Pic      : in Picture;
         Currency : in String := Default_Currency)
         return     Boolean;

      function Image
        (Item       : Num;
         Pic        : in Picture;
         Currency   : in String    := Default_Currency;
         Fill       : in Character := Default_Fill;
         Separator  : in Character := Default_Separator;
         Radix_Mark : in Character := Default_Radix_Mark)
         return       String;

      procedure Put
        (File       : in Ada.Text_IO.File_Type;
         Item       : Num;
         Pic        : in Picture;
         Currency   : in String    := Default_Currency;
         Fill       : in Character := Default_Fill;
         Separator  : in Character := Default_Separator;
         Radix_Mark : in Character := Default_Radix_Mark);

      procedure Put
        (Item       : Num;
         Pic        : in Picture;
         Currency   : in String    := Default_Currency;
         Fill       : in Character := Default_Fill;
         Separator  : in Character := Default_Separator;
         Radix_Mark : in Character := Default_Radix_Mark);

      procedure Put
        (To         : out String;
         Item       : Num;
         Pic        : in Picture;
         Currency   : in String    := Default_Currency;
         Fill       : in Character := Default_Fill;
         Separator  : in Character := Default_Separator;
         Radix_Mark : in Character := Default_Radix_Mark);

   end Decimal_Output;

private

   MAX_PICSIZE      : constant := 50;
   MAX_MONEYSIZE    : constant := 10;
   Invalid_Position : constant := -1;

   subtype Pic_Index is Natural range 0 .. MAX_PICSIZE;

   type Picture_Record (Length : Pic_Index := 0) is record
      Expanded : String (1 .. Length);
   end record;

   type Format_Record is record
      Picture              : Picture_Record;
      --  Read only

      Blank_When_Zero      : Boolean;
      --  Read/write

      Original_BWZ         : Boolean;

      --  The following components get written

      Star_Fill            : Boolean := False;

      Radix_Position       : Integer := Invalid_Position;

      Sign_Position,
      Second_Sign          : Integer := Invalid_Position;

      Start_Float,
      End_Float            : Integer := Invalid_Position;

      Start_Currency,
      End_Currency         : Integer := Invalid_Position;

      Max_Leading_Digits   : Integer := 0;

      Max_Trailing_Digits  : Integer := 0;

      Max_Currency_Digits  : Integer := 0;

      Floater              : Character := '!';
      --  Initialized to illegal value

   end record;

   type Picture is record
      Contents : Format_Record;
   end record;

   type Number_Attributes is record
      Negative     : Boolean := False;

      Has_Fraction : Boolean := False;

      Start_Of_Int,
      End_Of_Int,
      Start_Of_Fraction,
      End_Of_Fraction : Integer := Invalid_Position;    -- invalid value
   end record;

   function Parse_Number_String (Str : String) return Number_Attributes;
   --  Assumed format is 'IMAGE or Fixed_IO.Put format (depends on no
   --  trailing blanks...)

   procedure Precalculate (Pic : in out Format_Record);
   --  Precalculates fields from the user supplied data

   function Format_Number
     (Pic                 : Format_Record;
      Number              : String;
      Currency_Symbol     : String;
      Fill_Character      : Character;
      Separator_Character : Character;
      Radix_Point         : Character)
      return                String;
   --  Formats number according to Pic

   function Expand (Picture : in String) return String;

end Ada.Text_IO.Editing;