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1 ------------------------------------------------------------------------------
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2 -- --
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3 -- GNAT RUN-TIME COMPONENTS --
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4 -- --
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5 -- S Y S T E M . W W D _ E N U M --
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6 -- --
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7 -- B o d y --
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8 -- --
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9 -- Copyright (C) 1992-2017, Free Software Foundation, Inc. --
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10 -- --
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11 -- GNAT is free software; you can redistribute it and/or modify it under --
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12 -- terms of the GNU General Public License as published by the Free Soft- --
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13 -- ware Foundation; either version 3, or (at your option) any later ver- --
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14 -- sion. GNAT is distributed in the hope that it will be useful, but WITH- --
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15 -- OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY --
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16 -- or FITNESS FOR A PARTICULAR PURPOSE. --
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17 -- --
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18 -- As a special exception under Section 7 of GPL version 3, you are granted --
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19 -- additional permissions described in the GCC Runtime Library Exception, --
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20 -- version 3.1, as published by the Free Software Foundation. --
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21 -- --
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22 -- You should have received a copy of the GNU General Public License and --
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23 -- a copy of the GCC Runtime Library Exception along with this program; --
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24 -- see the files COPYING3 and COPYING.RUNTIME respectively. If not, see --
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25 -- <http://www.gnu.org/licenses/>. --
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26 -- --
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27 -- GNAT was originally developed by the GNAT team at New York University. --
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28 -- Extensive contributions were provided by Ada Core Technologies Inc. --
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29 -- --
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30 ------------------------------------------------------------------------------
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31
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32 with System.WCh_StW; use System.WCh_StW;
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33 with System.WCh_Con; use System.WCh_Con;
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34
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35 with Ada.Unchecked_Conversion;
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36
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37 package body System.WWd_Enum is
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38
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39 -----------------------------------
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40 -- Wide_Wide_Width_Enumeration_8 --
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41 -----------------------------------
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42
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43 function Wide_Wide_Width_Enumeration_8
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44 (Names : String;
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45 Indexes : System.Address;
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46 Lo, Hi : Natural;
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47 EM : WC_Encoding_Method) return Natural
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48 is
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49 W : Natural;
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50
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51 type Natural_8 is range 0 .. 2 ** 7 - 1;
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52 type Index_Table is array (Natural) of Natural_8;
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53 type Index_Table_Ptr is access Index_Table;
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54
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55 function To_Index_Table_Ptr is
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56 new Ada.Unchecked_Conversion (System.Address, Index_Table_Ptr);
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57
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58 IndexesT : constant Index_Table_Ptr := To_Index_Table_Ptr (Indexes);
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59
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60 begin
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61 W := 0;
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62 for J in Lo .. Hi loop
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63 declare
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64 S : constant String :=
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65 Names (Natural (IndexesT (J)) ..
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66 Natural (IndexesT (J + 1)) - 1);
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67 WS : Wide_Wide_String (1 .. S'Length);
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68 L : Natural;
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69 begin
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70 String_To_Wide_Wide_String (S, WS, L, EM);
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71 W := Natural'Max (W, L);
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72 end;
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73 end loop;
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74
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75 return W;
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76 end Wide_Wide_Width_Enumeration_8;
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77
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78 ------------------------------------
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79 -- Wide_Wide_Width_Enumeration_16 --
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80 ------------------------------------
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81
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82 function Wide_Wide_Width_Enumeration_16
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83 (Names : String;
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84 Indexes : System.Address;
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85 Lo, Hi : Natural;
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86 EM : WC_Encoding_Method) return Natural
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87 is
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88 W : Natural;
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89
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90 type Natural_16 is range 0 .. 2 ** 15 - 1;
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91 type Index_Table is array (Natural) of Natural_16;
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92 type Index_Table_Ptr is access Index_Table;
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93
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94 function To_Index_Table_Ptr is
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95 new Ada.Unchecked_Conversion (System.Address, Index_Table_Ptr);
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96
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97 IndexesT : constant Index_Table_Ptr := To_Index_Table_Ptr (Indexes);
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98
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99 begin
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100 W := 0;
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101 for J in Lo .. Hi loop
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102 declare
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103 S : constant String :=
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104 Names (Natural (IndexesT (J)) ..
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105 Natural (IndexesT (J + 1)) - 1);
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106 WS : Wide_Wide_String (1 .. S'Length);
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107 L : Natural;
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108 begin
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109 String_To_Wide_Wide_String (S, WS, L, EM);
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110 W := Natural'Max (W, L);
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111 end;
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112 end loop;
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113
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114 return W;
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115 end Wide_Wide_Width_Enumeration_16;
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116
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117 ------------------------------------
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118 -- Wide_Wide_Width_Enumeration_32 --
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119 ------------------------------------
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120
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121 function Wide_Wide_Width_Enumeration_32
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122 (Names : String;
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123 Indexes : System.Address;
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124 Lo, Hi : Natural;
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125 EM : WC_Encoding_Method) return Natural
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126 is
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127 W : Natural;
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128
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129 type Natural_32 is range 0 .. 2 ** 31 - 1;
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130 type Index_Table is array (Natural) of Natural_32;
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131 type Index_Table_Ptr is access Index_Table;
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132
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133 function To_Index_Table_Ptr is
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134 new Ada.Unchecked_Conversion (System.Address, Index_Table_Ptr);
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135
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136 IndexesT : constant Index_Table_Ptr := To_Index_Table_Ptr (Indexes);
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137
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138 begin
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139 W := 0;
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140 for J in Lo .. Hi loop
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141 declare
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142 S : constant String :=
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143 Names (Natural (IndexesT (J)) ..
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144 Natural (IndexesT (J + 1)) - 1);
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145 WS : Wide_Wide_String (1 .. S'Length);
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146 L : Natural;
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147 begin
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148 String_To_Wide_Wide_String (S, WS, L, EM);
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149 W := Natural'Max (W, L);
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150 end;
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151 end loop;
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152
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153 return W;
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154 end Wide_Wide_Width_Enumeration_32;
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155
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156 ------------------------------
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157 -- Wide_Width_Enumeration_8 --
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158 ------------------------------
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159
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160 function Wide_Width_Enumeration_8
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161 (Names : String;
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162 Indexes : System.Address;
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163 Lo, Hi : Natural;
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164 EM : WC_Encoding_Method) return Natural
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165 is
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166 W : Natural;
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167
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168 type Natural_8 is range 0 .. 2 ** 7 - 1;
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169 type Index_Table is array (Natural) of Natural_8;
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170 type Index_Table_Ptr is access Index_Table;
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171
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172 function To_Index_Table_Ptr is
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173 new Ada.Unchecked_Conversion (System.Address, Index_Table_Ptr);
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174
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175 IndexesT : constant Index_Table_Ptr := To_Index_Table_Ptr (Indexes);
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176
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177 begin
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178 W := 0;
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179 for J in Lo .. Hi loop
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180 declare
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181 S : constant String :=
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182 Names (Natural (IndexesT (J)) ..
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183 Natural (IndexesT (J + 1)) - 1);
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184 WS : Wide_String (1 .. S'Length);
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185 L : Natural;
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186 begin
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187 String_To_Wide_String (S, WS, L, EM);
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188 W := Natural'Max (W, L);
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189 end;
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190 end loop;
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191
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192 return W;
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193 end Wide_Width_Enumeration_8;
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194
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195 -------------------------------
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196 -- Wide_Width_Enumeration_16 --
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197 -------------------------------
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198
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199 function Wide_Width_Enumeration_16
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200 (Names : String;
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201 Indexes : System.Address;
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202 Lo, Hi : Natural;
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203 EM : WC_Encoding_Method) return Natural
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204 is
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205 W : Natural;
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206
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207 type Natural_16 is range 0 .. 2 ** 15 - 1;
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208 type Index_Table is array (Natural) of Natural_16;
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209 type Index_Table_Ptr is access Index_Table;
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210
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211 function To_Index_Table_Ptr is
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212 new Ada.Unchecked_Conversion (System.Address, Index_Table_Ptr);
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213
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214 IndexesT : constant Index_Table_Ptr := To_Index_Table_Ptr (Indexes);
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215
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216 begin
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217 W := 0;
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218 for J in Lo .. Hi loop
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219 declare
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220 S : constant String :=
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221 Names (Natural (IndexesT (J)) ..
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222 Natural (IndexesT (J + 1)) - 1);
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223 WS : Wide_String (1 .. S'Length);
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224 L : Natural;
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225 begin
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226 String_To_Wide_String (S, WS, L, EM);
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227 W := Natural'Max (W, L);
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228 end;
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229 end loop;
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230
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231 return W;
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232 end Wide_Width_Enumeration_16;
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233
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234 -------------------------------
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235 -- Wide_Width_Enumeration_32 --
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236 -------------------------------
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237
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238 function Wide_Width_Enumeration_32
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239 (Names : String;
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240 Indexes : System.Address;
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241 Lo, Hi : Natural;
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242 EM : WC_Encoding_Method) return Natural
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243 is
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244 W : Natural;
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245
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246 type Natural_32 is range 0 .. 2 ** 31 - 1;
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247 type Index_Table is array (Natural) of Natural_32;
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248 type Index_Table_Ptr is access Index_Table;
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249
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250 function To_Index_Table_Ptr is
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251 new Ada.Unchecked_Conversion (System.Address, Index_Table_Ptr);
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252
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253 IndexesT : constant Index_Table_Ptr := To_Index_Table_Ptr (Indexes);
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254
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255 begin
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256 W := 0;
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257 for J in Lo .. Hi loop
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258 declare
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259 S : constant String :=
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260 Names (Natural (IndexesT (J)) ..
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261 Natural (IndexesT (J + 1)) - 1);
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262 WS : Wide_String (1 .. S'Length);
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263 L : Natural;
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264 begin
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265 String_To_Wide_String (S, WS, L, EM);
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266 W := Natural'Max (W, L);
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267 end;
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268 end loop;
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269
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270 return W;
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271 end Wide_Width_Enumeration_32;
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272
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273 end System.WWd_Enum;
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