1 ------------------------------------------------------------------------------
3 -- GNAT RUN-TIME COMPONENTS --
5 -- S Y S T E M . W W D _ E N U M --
9 -- Copyright (C) 1992-2009, 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 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. --
18 -- As a special exception under Section 7 of GPL version 3, you are granted --
19 -- additional permissions described in the GCC Runtime Library Exception, --
20 -- version 3.1, as published by the Free Software Foundation. --
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/>. --
27 -- GNAT was originally developed by the GNAT team at New York University. --
28 -- Extensive contributions were provided by Ada Core Technologies Inc. --
30 ------------------------------------------------------------------------------
32 with System.WCh_StW; use System.WCh_StW;
33 with System.WCh_Con; use System.WCh_Con;
35 with Ada.Unchecked_Conversion;
37 package body System.WWd_Enum is
39 -----------------------------------
40 -- Wide_Wide_Width_Enumeration_8 --
41 -----------------------------------
43 function Wide_Wide_Width_Enumeration_8
45 Indexes : System.Address;
47 EM : WC_Encoding_Method) return Natural
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;
55 function To_Index_Table_Ptr is
56 new Ada.Unchecked_Conversion (System.Address, Index_Table_Ptr);
58 IndexesT : constant Index_Table_Ptr := To_Index_Table_Ptr (Indexes);
62 for J in Lo .. Hi loop
64 S : constant String :=
65 Names (Natural (IndexesT (J)) ..
66 Natural (IndexesT (J + 1)) - 1);
67 WS : Wide_Wide_String (1 .. S'Length);
70 String_To_Wide_Wide_String (S, WS, L, EM);
71 W := Natural'Max (W, L);
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 Ada.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 S : constant String :=
104 Names (Natural (IndexesT (J)) ..
105 Natural (IndexesT (J + 1)) - 1);
106 WS : Wide_Wide_String (1 .. S'Length);
109 String_To_Wide_Wide_String (S, WS, L, EM);
110 W := Natural'Max (W, L);
115 end Wide_Wide_Width_Enumeration_16;
117 ------------------------------------
118 -- Wide_Wide_Width_Enumeration_32 --
119 ------------------------------------
121 function Wide_Wide_Width_Enumeration_32
123 Indexes : System.Address;
125 EM : WC_Encoding_Method) return Natural
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;
133 function To_Index_Table_Ptr is
134 new Ada.Unchecked_Conversion (System.Address, Index_Table_Ptr);
136 IndexesT : constant Index_Table_Ptr := To_Index_Table_Ptr (Indexes);
140 for J in Lo .. Hi loop
142 S : constant String :=
143 Names (Natural (IndexesT (J)) ..
144 Natural (IndexesT (J + 1)) - 1);
145 WS : Wide_Wide_String (1 .. S'Length);
148 String_To_Wide_Wide_String (S, WS, L, EM);
149 W := Natural'Max (W, L);
154 end Wide_Wide_Width_Enumeration_32;
156 ------------------------------
157 -- Wide_Width_Enumeration_8 --
158 ------------------------------
160 function Wide_Width_Enumeration_8
162 Indexes : System.Address;
164 EM : WC_Encoding_Method) return Natural
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;
172 function To_Index_Table_Ptr is
173 new Ada.Unchecked_Conversion (System.Address, Index_Table_Ptr);
175 IndexesT : constant Index_Table_Ptr := To_Index_Table_Ptr (Indexes);
179 for J in Lo .. Hi loop
181 S : constant String :=
182 Names (Natural (IndexesT (J)) ..
183 Natural (IndexesT (J + 1)) - 1);
184 WS : Wide_String (1 .. S'Length);
187 String_To_Wide_String (S, WS, L, EM);
188 W := Natural'Max (W, L);
193 end Wide_Width_Enumeration_8;
195 -------------------------------
196 -- Wide_Width_Enumeration_16 --
197 -------------------------------
199 function Wide_Width_Enumeration_16
201 Indexes : System.Address;
203 EM : WC_Encoding_Method) return Natural
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;
211 function To_Index_Table_Ptr is
212 new Ada.Unchecked_Conversion (System.Address, Index_Table_Ptr);
214 IndexesT : constant Index_Table_Ptr := To_Index_Table_Ptr (Indexes);
218 for J in Lo .. Hi loop
220 S : constant String :=
221 Names (Natural (IndexesT (J)) ..
222 Natural (IndexesT (J + 1)) - 1);
223 WS : Wide_String (1 .. S'Length);
226 String_To_Wide_String (S, WS, L, EM);
227 W := Natural'Max (W, L);
232 end Wide_Width_Enumeration_16;
234 -------------------------------
235 -- Wide_Width_Enumeration_32 --
236 -------------------------------
238 function Wide_Width_Enumeration_32
240 Indexes : System.Address;
242 EM : WC_Encoding_Method) return Natural
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;
250 function To_Index_Table_Ptr is
251 new Ada.Unchecked_Conversion (System.Address, Index_Table_Ptr);
253 IndexesT : constant Index_Table_Ptr := To_Index_Table_Ptr (Indexes);
257 for J in Lo .. Hi loop
259 S : constant String :=
260 Names (Natural (IndexesT (J)) ..
261 Natural (IndexesT (J + 1)) - 1);
262 WS : Wide_String (1 .. S'Length);
265 String_To_Wide_String (S, WS, L, EM);
266 W := Natural'Max (W, L);
271 end Wide_Width_Enumeration_32;