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1 /*=============================================================================
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2 Copyright (c) 2001-2011 Joel de Guzman
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3
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4 Distributed under the Boost Software License, Version 1.0. (See accompanying
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5 file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
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6 ==============================================================================*/
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7 #if !defined(BOOST_FUSION_SEQUENCE_INTRINSIC_FWD_HPP_INCLUDED)
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8 #define BOOST_FUSION_SEQUENCE_INTRINSIC_FWD_HPP_INCLUDED
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9
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10 #include <boost/type_traits/is_const.hpp>
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11 #include <boost/utility/enable_if.hpp>
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12 #include <boost/fusion/support/is_sequence.hpp>
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13
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14 namespace boost { namespace fusion
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15 {
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16 namespace extension
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17 {
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18 template <typename Tag>
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19 struct at_impl;
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20
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21 template <typename Tag>
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22 struct begin_impl;
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23
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24 template <typename Tag>
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25 struct empty_impl;
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26
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27 template <typename Tag>
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28 struct end_impl;
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29
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30 template <typename Tag>
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31 struct has_key_impl;
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32
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33 template <typename Tag>
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34 struct segments_impl;
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35
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36 template <typename Tag>
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37 struct size_impl;
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38
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39 template <typename Tag>
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40 struct value_at_impl;
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41
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42 template <typename Tag>
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43 struct at_key_impl;
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44
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45 template <typename Tag>
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46 struct value_at_key_impl;
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47 }
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48
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49 namespace result_of
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50 {
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51 template <typename Sequence, typename N>
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52 struct at;
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53
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54 template <typename Sequence, int N>
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55 struct at_c;
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56
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57 template <typename Sequence>
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58 struct back;
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59
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60 template <typename Sequence>
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61 struct begin;
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62
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63 template <typename Sequence>
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64 struct empty;
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65
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66 template <typename Sequence>
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67 struct end;
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68
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69 template <typename Sequence>
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70 struct front;
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71
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72 template <typename Sequence, typename Key>
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73 struct has_key;
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74
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75 template <typename Sequence>
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76 struct segments;
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77
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78 template <typename Sequence>
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79 struct size;
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80
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81 template <typename Sequence, typename N>
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82 struct value_at;
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83
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84 template <typename Sequence, int N>
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85 struct value_at_c;
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86
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87 template <typename Sequence, typename Key>
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88 struct at_key;
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89
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90 template <typename Sequence, typename N>
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91 struct value_at_key;
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92 }
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93
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94 template <typename N, typename Sequence>
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95 typename
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96 lazy_disable_if<
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97 is_const<Sequence>
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98 , result_of::at<Sequence, N>
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99 >::type
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100 at(Sequence& seq);
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101
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102 template <typename N, typename Sequence>
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103 typename result_of::at<Sequence const, N>::type
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104 at(Sequence const& seq);
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105
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106 template <int N, typename Sequence>
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107 typename
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108 lazy_disable_if<
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109 is_const<Sequence>
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110 , result_of::at_c<Sequence, N>
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111 >::type
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112 at_c(Sequence& seq);
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113
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114 template <int N, typename Sequence>
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115 typename result_of::at_c<Sequence const, N>::type
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116 at_c(Sequence const& seq);
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117
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118 template <typename Sequence>
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119 typename result_of::back<Sequence>::type
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120 back(Sequence& seq);
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121
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122 template <typename Sequence>
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123 typename result_of::back<Sequence const>::type
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124 back(Sequence const& seq);
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125
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126 template <typename Sequence>
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127 typename
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128 lazy_enable_if<
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129 traits::is_sequence<Sequence>
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130 , result_of::begin<Sequence>
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131 >::type const
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132 begin(Sequence& seq);
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133
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134 template <typename Sequence>
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135 typename
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136 lazy_enable_if<
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137 traits::is_sequence<Sequence>
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138 , result_of::begin<Sequence const>
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139 >::type const
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140 begin(Sequence const& seq);
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141
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142 template <typename Sequence>
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143 typename result_of::empty<Sequence>::type
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144 empty(Sequence const&);
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145
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146 template <typename Sequence>
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147 typename
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148 lazy_enable_if<
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149 traits::is_sequence<Sequence>
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150 , result_of::end<Sequence>
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151 >::type const
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152 end(Sequence& seq);
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153
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154 template <typename Sequence>
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155 typename
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156 lazy_enable_if<
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157 traits::is_sequence<Sequence>
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158 , result_of::end<Sequence const>
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159 >::type const
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160 end(Sequence const& seq);
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161
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162 template <typename Sequence>
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163 typename result_of::front<Sequence>::type
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164 front(Sequence& seq);
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165
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166 template <typename Sequence>
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167 typename result_of::front<Sequence const>::type
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168 front(Sequence const& seq);
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169
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170 template <typename Key, typename Sequence>
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171 typename result_of::has_key<Sequence, Key>::type
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172 has_key(Sequence const& seq);
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173
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174 template <typename Sequence>
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175 typename
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176 lazy_disable_if<
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177 is_const<Sequence>
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178 , result_of::segments<Sequence>
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179 >::type
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180 segments(Sequence& seq);
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181
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182 template <typename Sequence>
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183 typename result_of::segments<Sequence const>::type
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184 segments(Sequence const& seq);
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185
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186 template <typename Sequence>
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187 typename result_of::size<Sequence>::type
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188 size(Sequence const&);
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189
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190 template <typename Key, typename Sequence>
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191 typename
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192 lazy_disable_if<
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193 is_const<Sequence>
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194 , result_of::at_key<Sequence, Key>
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195 >::type
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196 at_key(Sequence& seq);
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197
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198 template <typename Key, typename Sequence>
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199 typename result_of::at_key<Sequence const, Key>::type
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200 at_key(Sequence const& seq);
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201 }}
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202
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203 #endif
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