1 ------------------------------------------------------------------------------
3 -- GNAT RUN-TIME COMPONENTS --
5 -- S Y S T E M . W W D _ E N U M --
9 -- Copyright (C) 1992-2005, 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, 51 Franklin Street, Fifth Floor, --
20 -- Boston, MA 02110-1301, 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 System
.WCh_StW
; use System
.WCh_StW
;
35 with System
.WCh_Con
; use System
.WCh_Con
;
37 with Unchecked_Conversion
;
39 package body System
.WWd_Enum
is
41 -----------------------------------
42 -- Wide_Wide_Width_Enumeration_8 --
43 -----------------------------------
45 function Wide_Wide_Width_Enumeration_8
47 Indexes
: System
.Address
;
49 EM
: WC_Encoding_Method
) return Natural
53 type Natural_8
is range 0 .. 2 ** 7 - 1;
54 type Index_Table
is array (Natural) of Natural_8
;
55 type Index_Table_Ptr
is access Index_Table
;
57 function To_Index_Table_Ptr
is
58 new Unchecked_Conversion
(System
.Address
, Index_Table_Ptr
);
60 IndexesT
: constant Index_Table_Ptr
:= To_Index_Table_Ptr
(Indexes
);
64 for J
in Lo
.. Hi
loop
66 WS
: constant Wide_Wide_String
:=
67 String_To_Wide_Wide_String
68 (Names
(Natural (IndexesT
(J
)) ..
69 Natural (IndexesT
(J
+ 1)) - 1), EM
);
71 W
:= Natural'Max (W
, WS
'Length);
76 end Wide_Wide_Width_Enumeration_8
;
78 ------------------------------------
79 -- Wide_Wide_Width_Enumeration_16 --
80 ------------------------------------
82 function Wide_Wide_Width_Enumeration_16
84 Indexes
: System
.Address
;
86 EM
: WC_Encoding_Method
) return Natural
90 type Natural_16
is range 0 .. 2 ** 15 - 1;
91 type Index_Table
is array (Natural) of Natural_16
;
92 type Index_Table_Ptr
is access Index_Table
;
94 function To_Index_Table_Ptr
is
95 new Unchecked_Conversion
(System
.Address
, Index_Table_Ptr
);
97 IndexesT
: constant Index_Table_Ptr
:= To_Index_Table_Ptr
(Indexes
);
101 for J
in Lo
.. Hi
loop
103 WS
: constant Wide_Wide_String
:=
104 String_To_Wide_Wide_String
105 (Names
(Natural (IndexesT
(J
)) ..
106 Natural (IndexesT
(J
+ 1)) - 1), EM
);
108 W
:= Natural'Max (W
, WS
'Length);
113 end Wide_Wide_Width_Enumeration_16
;
115 ------------------------------------
116 -- Wide_Wide_Width_Enumeration_32 --
117 ------------------------------------
119 function Wide_Wide_Width_Enumeration_32
121 Indexes
: System
.Address
;
123 EM
: WC_Encoding_Method
) return Natural
127 type Natural_32
is range 0 .. 2 ** 31 - 1;
128 type Index_Table
is array (Natural) of Natural_32
;
129 type Index_Table_Ptr
is access Index_Table
;
131 function To_Index_Table_Ptr
is
132 new Unchecked_Conversion
(System
.Address
, Index_Table_Ptr
);
134 IndexesT
: constant Index_Table_Ptr
:= To_Index_Table_Ptr
(Indexes
);
138 for J
in Lo
.. Hi
loop
140 WS
: constant Wide_Wide_String
:=
141 String_To_Wide_Wide_String
142 (Names
(Natural (IndexesT
(J
)) ..
143 Natural (IndexesT
(J
+ 1)) - 1), EM
);
145 W
:= Natural'Max (W
, WS
'Length);
150 end Wide_Wide_Width_Enumeration_32
;
152 ------------------------------
153 -- Wide_Width_Enumeration_8 --
154 ------------------------------
156 function Wide_Width_Enumeration_8
158 Indexes
: System
.Address
;
160 EM
: WC_Encoding_Method
) return Natural
164 type Natural_8
is range 0 .. 2 ** 7 - 1;
165 type Index_Table
is array (Natural) of Natural_8
;
166 type Index_Table_Ptr
is access Index_Table
;
168 function To_Index_Table_Ptr
is
169 new Unchecked_Conversion
(System
.Address
, Index_Table_Ptr
);
171 IndexesT
: constant Index_Table_Ptr
:= To_Index_Table_Ptr
(Indexes
);
175 for J
in Lo
.. Hi
loop
177 WS
: constant Wide_String :=
178 String_To_Wide_String
179 (Names
(Natural (IndexesT
(J
)) ..
180 Natural (IndexesT
(J
+ 1)) - 1), EM
);
182 W
:= Natural'Max (W
, WS
'Length);
187 end Wide_Width_Enumeration_8
;
189 -------------------------------
190 -- Wide_Width_Enumeration_16 --
191 -------------------------------
193 function Wide_Width_Enumeration_16
195 Indexes
: System
.Address
;
197 EM
: WC_Encoding_Method
) return Natural
201 type Natural_16
is range 0 .. 2 ** 15 - 1;
202 type Index_Table
is array (Natural) of Natural_16
;
203 type Index_Table_Ptr
is access Index_Table
;
205 function To_Index_Table_Ptr
is
206 new Unchecked_Conversion
(System
.Address
, Index_Table_Ptr
);
208 IndexesT
: constant Index_Table_Ptr
:= To_Index_Table_Ptr
(Indexes
);
212 for J
in Lo
.. Hi
loop
214 WS
: constant Wide_String :=
215 String_To_Wide_String
216 (Names
(Natural (IndexesT
(J
)) ..
217 Natural (IndexesT
(J
+ 1)) - 1), EM
);
219 W
:= Natural'Max (W
, WS
'Length);
224 end Wide_Width_Enumeration_16
;
226 -------------------------------
227 -- Wide_Width_Enumeration_32 --
228 -------------------------------
230 function Wide_Width_Enumeration_32
232 Indexes
: System
.Address
;
234 EM
: WC_Encoding_Method
) return Natural
238 type Natural_32
is range 0 .. 2 ** 31 - 1;
239 type Index_Table
is array (Natural) of Natural_32
;
240 type Index_Table_Ptr
is access Index_Table
;
242 function To_Index_Table_Ptr
is
243 new Unchecked_Conversion
(System
.Address
, Index_Table_Ptr
);
245 IndexesT
: constant Index_Table_Ptr
:= To_Index_Table_Ptr
(Indexes
);
249 for J
in Lo
.. Hi
loop
251 WS
: constant Wide_String :=
252 String_To_Wide_String
253 (Names
(Natural (IndexesT
(J
)) ..
254 Natural (IndexesT
(J
+ 1)) - 1), EM
);
256 W
:= Natural'Max (W
, WS
'Length);
261 end Wide_Width_Enumeration_32
;