File : s-wwdenu.adb
1 ------------------------------------------------------------------------------
2 -- --
3 -- GNAT RUN-TIME COMPONENTS --
4 -- --
5 -- S Y S T E M . W W D _ E N U M --
6 -- --
7 -- B o d y --
8 -- --
9 -- Copyright (C) 1992-2009, Free Software Foundation, Inc. --
10 -- --
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 3, 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. --
17 -- --
18 -- --
19 -- --
20 -- --
21 -- --
22 -- You should have received a copy of the GNU General Public License and --
23 -- a copy of the GCC Runtime Library Exception along with this program; --
24 -- see the files COPYING3 and COPYING.RUNTIME respectively. If not, see --
25 -- <http://www.gnu.org/licenses/>. --
26 -- --
27 -- GNAT was originally developed by the GNAT team at New York University. --
28 -- Extensive contributions were provided by Ada Core Technologies Inc. --
29 -- --
30 ------------------------------------------------------------------------------
31
32 with System.WCh_StW; use System.WCh_StW;
33 with System.WCh_Con; use System.WCh_Con;
34
35 with Ada.Unchecked_Conversion;
36
37 package body System.WWd_Enum is
38
39 -----------------------------------
40 -- Wide_Wide_Width_Enumeration_8 --
41 -----------------------------------
42
43 function Wide_Wide_Width_Enumeration_8
44 (Names : String;
45 Indexes : System.Address;
46 Lo, Hi : Natural;
47 EM : WC_Encoding_Method) return Natural
48 is
49 W : Natural;
50
51 type Natural_8 is range 0 .. 2 ** 7 - 1;
52 type Index_Table is array (Natural) of Natural_8;
53 type Index_Table_Ptr is access Index_Table;
54
55 function To_Index_Table_Ptr is
56 new Ada.Unchecked_Conversion (System.Address, Index_Table_Ptr);
57
58 IndexesT : constant Index_Table_Ptr := To_Index_Table_Ptr (Indexes);
59
60 begin
61 W := 0;
62 for J in Lo .. Hi loop
63 declare
64 S : constant String :=
65 Names (Natural (IndexesT (J)) ..
66 Natural (IndexesT (J + 1)) - 1);
67 WS : Wide_Wide_String (1 .. S'Length);
68 L : Natural;
69 begin
70 String_To_Wide_Wide_String (S, WS, L, EM);
71 W := Natural'Max (W, L);
72 end;
73 end loop;
74
75 return W;
76 end Wide_Wide_Width_Enumeration_8;
77
78 ------------------------------------
79 -- Wide_Wide_Width_Enumeration_16 --
80 ------------------------------------
81
82 function Wide_Wide_Width_Enumeration_16
83 (Names : String;
84 Indexes : System.Address;
85 Lo, Hi : Natural;
86 EM : WC_Encoding_Method) return Natural
87 is
88 W : Natural;
89
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;
93
94 function To_Index_Table_Ptr is
95 new Ada.Unchecked_Conversion (System.Address, Index_Table_Ptr);
96
97 IndexesT : constant Index_Table_Ptr := To_Index_Table_Ptr (Indexes);
98
99 begin
100 W := 0;
101 for J in Lo .. Hi loop
102 declare
103 S : constant String :=
104 Names (Natural (IndexesT (J)) ..
105 Natural (IndexesT (J + 1)) - 1);
106 WS : Wide_Wide_String (1 .. S'Length);
107 L : Natural;
108 begin
109 String_To_Wide_Wide_String (S, WS, L, EM);
110 W := Natural'Max (W, L);
111 end;
112 end loop;
113
114 return W;
115 end Wide_Wide_Width_Enumeration_16;
116
117 ------------------------------------
118 -- Wide_Wide_Width_Enumeration_32 --
119 ------------------------------------
120
121 function Wide_Wide_Width_Enumeration_32
122 (Names : String;
123 Indexes : System.Address;
124 Lo, Hi : Natural;
125 EM : WC_Encoding_Method) return Natural
126 is
127 W : Natural;
128
129 type Natural_32 is range 0 .. 2 ** 31 - 1;
130 type Index_Table is array (Natural) of Natural_32;
131 type Index_Table_Ptr is access Index_Table;
132
133 function To_Index_Table_Ptr is
134 new Ada.Unchecked_Conversion (System.Address, Index_Table_Ptr);
135
136 IndexesT : constant Index_Table_Ptr := To_Index_Table_Ptr (Indexes);
137
138 begin
139 W := 0;
140 for J in Lo .. Hi loop
141 declare
142 S : constant String :=
143 Names (Natural (IndexesT (J)) ..
144 Natural (IndexesT (J + 1)) - 1);
145 WS : Wide_Wide_String (1 .. S'Length);
146 L : Natural;
147 begin
148 String_To_Wide_Wide_String (S, WS, L, EM);
149 W := Natural'Max (W, L);
150 end;
151 end loop;
152
153 return W;
154 end Wide_Wide_Width_Enumeration_32;
155
156 ------------------------------
157 -- Wide_Width_Enumeration_8 --
158 ------------------------------
159
160 function Wide_Width_Enumeration_8
161 (Names : String;
162 Indexes : System.Address;
163 Lo, Hi : Natural;
164 EM : WC_Encoding_Method) return Natural
165 is
166 W : Natural;
167
168 type Natural_8 is range 0 .. 2 ** 7 - 1;
169 type Index_Table is array (Natural) of Natural_8;
170 type Index_Table_Ptr is access Index_Table;
171
172 function To_Index_Table_Ptr is
173 new Ada.Unchecked_Conversion (System.Address, Index_Table_Ptr);
174
175 IndexesT : constant Index_Table_Ptr := To_Index_Table_Ptr (Indexes);
176
177 begin
178 W := 0;
179 for J in Lo .. Hi loop
180 declare
181 S : constant String :=
182 Names (Natural (IndexesT (J)) ..
183 Natural (IndexesT (J + 1)) - 1);
184 WS : Wide_String (1 .. S'Length);
185 L : Natural;
186 begin
187 String_To_Wide_String (S, WS, L, EM);
188 W := Natural'Max (W, L);
189 end;
190 end loop;
191
192 return W;
193 end Wide_Width_Enumeration_8;
194
195 -------------------------------
196 -- Wide_Width_Enumeration_16 --
197 -------------------------------
198
199 function Wide_Width_Enumeration_16
200 (Names : String;
201 Indexes : System.Address;
202 Lo, Hi : Natural;
203 EM : WC_Encoding_Method) return Natural
204 is
205 W : Natural;
206
207 type Natural_16 is range 0 .. 2 ** 15 - 1;
208 type Index_Table is array (Natural) of Natural_16;
209 type Index_Table_Ptr is access Index_Table;
210
211 function To_Index_Table_Ptr is
212 new Ada.Unchecked_Conversion (System.Address, Index_Table_Ptr);
213
214 IndexesT : constant Index_Table_Ptr := To_Index_Table_Ptr (Indexes);
215
216 begin
217 W := 0;
218 for J in Lo .. Hi loop
219 declare
220 S : constant String :=
221 Names (Natural (IndexesT (J)) ..
222 Natural (IndexesT (J + 1)) - 1);
223 WS : Wide_String (1 .. S'Length);
224 L : Natural;
225 begin
226 String_To_Wide_String (S, WS, L, EM);
227 W := Natural'Max (W, L);
228 end;
229 end loop;
230
231 return W;
232 end Wide_Width_Enumeration_16;
233
234 -------------------------------
235 -- Wide_Width_Enumeration_32 --
236 -------------------------------
237
238 function Wide_Width_Enumeration_32
239 (Names : String;
240 Indexes : System.Address;
241 Lo, Hi : Natural;
242 EM : WC_Encoding_Method) return Natural
243 is
244 W : Natural;
245
246 type Natural_32 is range 0 .. 2 ** 31 - 1;
247 type Index_Table is array (Natural) of Natural_32;
248 type Index_Table_Ptr is access Index_Table;
249
250 function To_Index_Table_Ptr is
251 new Ada.Unchecked_Conversion (System.Address, Index_Table_Ptr);
252
253 IndexesT : constant Index_Table_Ptr := To_Index_Table_Ptr (Indexes);
254
255 begin
256 W := 0;
257 for J in Lo .. Hi loop
258 declare
259 S : constant String :=
260 Names (Natural (IndexesT (J)) ..
261 Natural (IndexesT (J + 1)) - 1);
262 WS : Wide_String (1 .. S'Length);
263 L : Natural;
264 begin
265 String_To_Wide_String (S, WS, L, EM);
266 W := Natural'Max (W, L);
267 end;
268 end loop;
269
270 return W;
271 end Wide_Width_Enumeration_32;
272
273 end System.WWd_Enum;