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
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
|
------------------------------------------------------------------------------
-- --
-- GNAT RUN-TIME COMPONENTS --
-- --
-- A D A . S T R I N G S . W I D E _ M A P S --
-- --
-- S p e c --
-- --
-- Copyright (C) 1992-2009, 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 3, 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. --
-- --
-- As a special exception under Section 7 of GPL version 3, you are granted --
-- additional permissions described in the GCC Runtime Library Exception, --
-- version 3.1, as published by the Free Software Foundation. --
-- --
-- You should have received a copy of the GNU General Public License and --
-- a copy of the GCC Runtime Library Exception along with this program; --
-- see the files COPYING3 and COPYING.RUNTIME respectively. If not, see --
-- <http://www.gnu.org/licenses/>. --
-- --
-- GNAT was originally developed by the GNAT team at New York University. --
-- Extensive contributions were provided by Ada Core Technologies Inc. --
-- --
------------------------------------------------------------------------------
with Ada.Finalization;
package Ada.Strings.Wide_Maps is
pragma Preelaborate;
-------------------------------------
-- Wide Character Set Declarations --
-------------------------------------
type Wide_Character_Set is private;
pragma Preelaborable_Initialization (Wide_Character_Set);
-- Representation for a set of Wide_Character values:
Null_Set : constant Wide_Character_Set;
------------------------------------------
-- Constructors for Wide Character Sets --
------------------------------------------
type Wide_Character_Range is record
Low : Wide_Character;
High : Wide_Character;
end record;
-- Represents Wide_Character range Low .. High
type Wide_Character_Ranges is
array (Positive range <>) of Wide_Character_Range;
function To_Set
(Ranges : Wide_Character_Ranges) return Wide_Character_Set;
function To_Set
(Span : Wide_Character_Range) return Wide_Character_Set;
function To_Ranges
(Set : Wide_Character_Set) return Wide_Character_Ranges;
---------------------------------------
-- Operations on Wide Character Sets --
---------------------------------------
function "=" (Left, Right : Wide_Character_Set) return Boolean;
function "not"
(Right : Wide_Character_Set) return Wide_Character_Set;
function "and"
(Left, Right : Wide_Character_Set) return Wide_Character_Set;
function "or"
(Left, Right : Wide_Character_Set) return Wide_Character_Set;
function "xor"
(Left, Right : Wide_Character_Set) return Wide_Character_Set;
function "-"
(Left, Right : Wide_Character_Set) return Wide_Character_Set;
function Is_In
(Element : Wide_Character;
Set : Wide_Character_Set) return Boolean;
function Is_Subset
(Elements : Wide_Character_Set;
Set : Wide_Character_Set) return Boolean;
function "<="
(Left : Wide_Character_Set;
Right : Wide_Character_Set) return Boolean
renames Is_Subset;
subtype Wide_Character_Sequence is Wide_String;
-- Alternative representation for a set of character values
function To_Set
(Sequence : Wide_Character_Sequence) return Wide_Character_Set;
function To_Set
(Singleton : Wide_Character) return Wide_Character_Set;
function To_Sequence
(Set : Wide_Character_Set) return Wide_Character_Sequence;
-----------------------------------------
-- Wide Character Mapping Declarations --
-----------------------------------------
type Wide_Character_Mapping is private;
pragma Preelaborable_Initialization (Wide_Character_Mapping);
-- Representation for a wide character to wide character mapping:
function Value
(Map : Wide_Character_Mapping;
Element : Wide_Character) return Wide_Character;
Identity : constant Wide_Character_Mapping;
---------------------------------
-- Operations on Wide Mappings --
---------------------------------
function To_Mapping
(From, To : Wide_Character_Sequence) return Wide_Character_Mapping;
function To_Domain
(Map : Wide_Character_Mapping) return Wide_Character_Sequence;
function To_Range
(Map : Wide_Character_Mapping) return Wide_Character_Sequence;
type Wide_Character_Mapping_Function is
access function (From : Wide_Character) return Wide_Character;
private
package AF renames Ada.Finalization;
------------------------------------------
-- Representation of Wide_Character_Set --
------------------------------------------
-- A wide character set is represented as a sequence of wide character
-- ranges (i.e. an object of type Wide_Character_Ranges) in which the
-- following hold:
-- The lower bound is 1
-- The ranges are in order by increasing Low values
-- The ranges are non-overlapping and discontigous
-- A character value is in the set if it is contained in one of the
-- ranges. The actual Wide_Character_Set value is a controlled pointer
-- to this Wide_Character_Ranges value. The use of a controlled type
-- is necessary to prevent storage leaks.
type Wide_Character_Ranges_Access is access all Wide_Character_Ranges;
type Wide_Character_Set is new AF.Controlled with record
Set : Wide_Character_Ranges_Access;
end record;
pragma Finalize_Storage_Only (Wide_Character_Set);
-- This avoids useless finalizations, and, more importantly avoids
-- incorrect attempts to finalize constants that are statically
-- declared here and in Ada.Strings.Wide_Maps, which is incorrect.
procedure Initialize (Object : in out Wide_Character_Set);
procedure Adjust (Object : in out Wide_Character_Set);
procedure Finalize (Object : in out Wide_Character_Set);
Null_Range : aliased constant Wide_Character_Ranges :=
(1 .. 0 => (Low => ' ', High => ' '));
Null_Set : constant Wide_Character_Set :=
(AF.Controlled with
Set => Null_Range'Unrestricted_Access);
----------------------------------------------
-- Representation of Wide_Character_Mapping --
----------------------------------------------
-- A wide character mapping is represented as two strings of equal
-- length, where any character appearing in Domain is mapped to the
-- corresponding character in Rangev. A character not appearing in
-- Domain is mapped to itself. The characters in Domain are sorted
-- in ascending order.
-- The actual Wide_Character_Mapping value is a controlled record
-- that contains a pointer to a discriminated record containing the
-- range and domain values.
-- Note: this representation is canonical, and the values stored in
-- Domain and Rangev are exactly the values that are returned by the
-- functions To_Domain and To_Range. The use of a controlled type is
-- necessary to prevent storage leaks.
type Wide_Character_Mapping_Values (Length : Natural) is record
Domain : Wide_Character_Sequence (1 .. Length);
Rangev : Wide_Character_Sequence (1 .. Length);
end record;
type Wide_Character_Mapping_Values_Access is
access all Wide_Character_Mapping_Values;
type Wide_Character_Mapping is new AF.Controlled with record
Map : Wide_Character_Mapping_Values_Access;
end record;
pragma Finalize_Storage_Only (Wide_Character_Mapping);
-- This avoids useless finalizations, and, more importantly avoids
-- incorrect attempts to finalize constants that are statically
-- declared here and in Ada.Strings.Wide_Maps, which is incorrect.
procedure Initialize (Object : in out Wide_Character_Mapping);
procedure Adjust (Object : in out Wide_Character_Mapping);
procedure Finalize (Object : in out Wide_Character_Mapping);
Null_Map : aliased constant Wide_Character_Mapping_Values :=
(Length => 0,
Domain => "",
Rangev => "");
Identity : constant Wide_Character_Mapping :=
(AF.Controlled with
Map => Null_Map'Unrestricted_Access);
end Ada.Strings.Wide_Maps;
|
