1 ------------------------------------------------------------------------------
3 -- GNAT RUN-TIME COMPONENTS --
5 -- S Y S T E M . W W D _ E N U M --
9 -- Copyright (C) 1992-2007, 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 Ada.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 Ada.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 S : constant String :=
67 Names (Natural (IndexesT (J)) ..
68 Natural (IndexesT (J + 1)) - 1);
69 WS : Wide_Wide_String (1 .. S'Length);
72 String_To_Wide_Wide_String (S, WS, L, EM);
73 W := Natural'Max (W, L);
78 end Wide_Wide_Width_Enumeration_8;
80 ------------------------------------
81 -- Wide_Wide_Width_Enumeration_16 --
82 ------------------------------------
84 function Wide_Wide_Width_Enumeration_16
86 Indexes : System.Address;
88 EM : WC_Encoding_Method) return Natural
92 type Natural_16 is range 0 .. 2 ** 15 - 1;
93 type Index_Table is array (Natural) of Natural_16;
94 type Index_Table_Ptr is access Index_Table;
96 function To_Index_Table_Ptr is
97 new Ada.Unchecked_Conversion (System.Address, Index_Table_Ptr);
99 IndexesT : constant Index_Table_Ptr := To_Index_Table_Ptr (Indexes);
103 for J in Lo .. Hi loop
105 S : constant String :=
106 Names (Natural (IndexesT (J)) ..
107 Natural (IndexesT (J + 1)) - 1);
108 WS : Wide_Wide_String (1 .. S'Length);
111 String_To_Wide_Wide_String (S, WS, L, EM);
112 W := Natural'Max (W, L);
117 end Wide_Wide_Width_Enumeration_16;
119 ------------------------------------
120 -- Wide_Wide_Width_Enumeration_32 --
121 ------------------------------------
123 function Wide_Wide_Width_Enumeration_32
125 Indexes : System.Address;
127 EM : WC_Encoding_Method) return Natural
131 type Natural_32 is range 0 .. 2 ** 31 - 1;
132 type Index_Table is array (Natural) of Natural_32;
133 type Index_Table_Ptr is access Index_Table;
135 function To_Index_Table_Ptr is
136 new Ada.Unchecked_Conversion (System.Address, Index_Table_Ptr);
138 IndexesT : constant Index_Table_Ptr := To_Index_Table_Ptr (Indexes);
142 for J in Lo .. Hi loop
144 S : constant String :=
145 Names (Natural (IndexesT (J)) ..
146 Natural (IndexesT (J + 1)) - 1);
147 WS : Wide_Wide_String (1 .. S'Length);
150 String_To_Wide_Wide_String (S, WS, L, EM);
151 W := Natural'Max (W, L);
156 end Wide_Wide_Width_Enumeration_32;
158 ------------------------------
159 -- Wide_Width_Enumeration_8 --
160 ------------------------------
162 function Wide_Width_Enumeration_8
164 Indexes : System.Address;
166 EM : WC_Encoding_Method) return Natural
170 type Natural_8 is range 0 .. 2 ** 7 - 1;
171 type Index_Table is array (Natural) of Natural_8;
172 type Index_Table_Ptr is access Index_Table;
174 function To_Index_Table_Ptr is
175 new Ada.Unchecked_Conversion (System.Address, Index_Table_Ptr);
177 IndexesT : constant Index_Table_Ptr := To_Index_Table_Ptr (Indexes);
181 for J in Lo .. Hi loop
183 S : constant String :=
184 Names (Natural (IndexesT (J)) ..
185 Natural (IndexesT (J + 1)) - 1);
186 WS : Wide_String (1 .. S'Length);
189 String_To_Wide_String (S, WS, L, EM);
190 W := Natural'Max (W, L);
195 end Wide_Width_Enumeration_8;
197 -------------------------------
198 -- Wide_Width_Enumeration_16 --
199 -------------------------------
201 function Wide_Width_Enumeration_16
203 Indexes : System.Address;
205 EM : WC_Encoding_Method) return Natural
209 type Natural_16 is range 0 .. 2 ** 15 - 1;
210 type Index_Table is array (Natural) of Natural_16;
211 type Index_Table_Ptr is access Index_Table;
213 function To_Index_Table_Ptr is
214 new Ada.Unchecked_Conversion (System.Address, Index_Table_Ptr);
216 IndexesT : constant Index_Table_Ptr := To_Index_Table_Ptr (Indexes);
220 for J in Lo .. Hi loop
222 S : constant String :=
223 Names (Natural (IndexesT (J)) ..
224 Natural (IndexesT (J + 1)) - 1);
225 WS : Wide_String (1 .. S'Length);
228 String_To_Wide_String (S, WS, L, EM);
229 W := Natural'Max (W, L);
234 end Wide_Width_Enumeration_16;
236 -------------------------------
237 -- Wide_Width_Enumeration_32 --
238 -------------------------------
240 function Wide_Width_Enumeration_32
242 Indexes : System.Address;
244 EM : WC_Encoding_Method) return Natural
248 type Natural_32 is range 0 .. 2 ** 31 - 1;
249 type Index_Table is array (Natural) of Natural_32;
250 type Index_Table_Ptr is access Index_Table;
252 function To_Index_Table_Ptr is
253 new Ada.Unchecked_Conversion (System.Address, Index_Table_Ptr);
255 IndexesT : constant Index_Table_Ptr := To_Index_Table_Ptr (Indexes);
259 for J in Lo .. Hi loop
261 S : constant String :=
262 Names (Natural (IndexesT (J)) ..
263 Natural (IndexesT (J + 1)) - 1);
264 WS : Wide_String (1 .. S'Length);
267 String_To_Wide_String (S, WS, L, EM);
268 W := Natural'Max (W, L);
273 end Wide_Width_Enumeration_32;