1 | // |
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2 | // Boost.Pointer Container |
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3 | // |
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4 | // Copyright Thorsten Ottosen 2003-2005. Use, modification and |
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5 | // distribution is subject to the Boost Software License, Version |
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6 | // 1.0. (See accompanying file LICENSE_1_0.txt or copy at |
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7 | // http://www.boost.org/LICENSE_1_0.txt) |
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8 | // |
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9 | // For more information, see http://www.boost.org/libs/ptr_container/ |
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10 | // |
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11 | |
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12 | #ifndef BOOST_PTR_CONTAINER_DETAIL_PTR_MAP_ADAPTER_HPP |
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13 | #define BOOST_PTR_CONTAINER_DETAIL_PTR_MAP_ADAPTER_HPP |
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14 | |
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15 | #if defined(_MSC_VER) && (_MSC_VER >= 1200) |
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16 | # pragma once |
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17 | #endif |
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18 | |
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19 | #include <boost/ptr_container/detail/map_iterator.hpp> |
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20 | #include <boost/ptr_container/detail/associative_ptr_container.hpp> |
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21 | #include <boost/static_assert.hpp> |
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22 | #include <boost/range/iterator_range.hpp> |
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23 | |
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24 | namespace boost |
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25 | { |
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26 | namespace ptr_container_detail |
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27 | { |
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28 | |
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29 | template |
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30 | < |
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31 | class T, |
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32 | class VoidPtrMap |
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33 | > |
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34 | struct map_config |
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35 | { |
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36 | typedef BOOST_DEDUCED_TYPENAME remove_nullable<T>::type |
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37 | U; |
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38 | typedef VoidPtrMap |
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39 | void_container_type; |
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40 | |
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41 | typedef BOOST_DEDUCED_TYPENAME VoidPtrMap::allocator_type |
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42 | allocator_type; |
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43 | |
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44 | typedef BOOST_DEDUCED_TYPENAME VoidPtrMap::key_compare |
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45 | key_compare; |
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46 | |
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47 | typedef BOOST_DEDUCED_TYPENAME VoidPtrMap::value_compare |
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48 | value_compare; |
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49 | |
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50 | typedef BOOST_DEDUCED_TYPENAME VoidPtrMap::key_type |
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51 | key_type; |
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52 | |
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53 | typedef U value_type; |
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54 | |
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55 | typedef ptr_map_iterator< |
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56 | BOOST_DEDUCED_TYPENAME VoidPtrMap::iterator, |
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57 | BOOST_DEDUCED_TYPENAME VoidPtrMap::key_type, value_type> |
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58 | iterator; |
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59 | |
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60 | typedef |
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61 | ptr_map_iterator< |
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62 | BOOST_DEDUCED_TYPENAME VoidPtrMap::const_iterator, |
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63 | BOOST_DEDUCED_TYPENAME VoidPtrMap::key_type, |
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64 | const value_type> |
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65 | const_iterator; |
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66 | |
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67 | typedef |
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68 | ptr_map_iterator< |
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69 | BOOST_DEDUCED_TYPENAME VoidPtrMap::reverse_iterator, |
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70 | BOOST_DEDUCED_TYPENAME VoidPtrMap::key_type, value_type> |
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71 | reverse_iterator; |
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72 | |
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73 | typedef |
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74 | ptr_map_iterator< |
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75 | BOOST_DEDUCED_TYPENAME VoidPtrMap::const_reverse_iterator, |
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76 | BOOST_DEDUCED_TYPENAME VoidPtrMap::key_type, |
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77 | const value_type> |
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78 | const_reverse_iterator; |
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79 | |
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80 | typedef std::pair<const key_type, void*> |
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81 | object_type; |
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82 | |
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83 | template< class Iter > |
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84 | static U* get_pointer( Iter i ) |
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85 | { |
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86 | return static_cast<U*>( i.base()->second ); |
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87 | } |
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88 | |
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89 | template< class Iter > |
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90 | static const U* get_const_pointer( Iter i ) |
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91 | { |
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92 | return static_cast<const U*>( i.base()->second ); |
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93 | } |
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94 | |
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95 | BOOST_STATIC_CONSTANT( bool, allow_null = boost::is_nullable<T>::value ); |
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96 | }; |
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97 | |
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98 | |
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99 | |
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100 | template |
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101 | < |
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102 | class T, |
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103 | class VoidPtrMap, |
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104 | class CloneAllocator |
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105 | > |
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106 | class ptr_map_adapter_base : |
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107 | public ptr_container_detail::associative_ptr_container< map_config<T,VoidPtrMap>, |
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108 | CloneAllocator > |
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109 | { |
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110 | typedef ptr_container_detail::associative_ptr_container< map_config<T,VoidPtrMap>, |
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111 | CloneAllocator > |
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112 | base_type; |
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113 | |
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114 | typedef ptr_map_adapter_base<T,VoidPtrMap,CloneAllocator> this_type; |
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115 | |
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116 | public: |
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117 | |
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118 | typedef BOOST_DEDUCED_TYPENAME base_type::const_iterator |
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119 | const_iterator; |
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120 | typedef BOOST_DEDUCED_TYPENAME base_type::key_type |
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121 | key_type; |
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122 | typedef BOOST_DEDUCED_TYPENAME base_type::reference |
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123 | reference; |
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124 | typedef BOOST_DEDUCED_TYPENAME base_type::value_type |
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125 | value_type; |
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126 | typedef BOOST_DEDUCED_TYPENAME base_type::auto_type |
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127 | auto_type; |
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128 | |
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129 | private: |
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130 | reference lookup( const key_type& key ) const |
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131 | { |
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132 | iterator i = const_cast<ptr_map_adapter_base*>(this) |
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133 | ->find( key ); |
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134 | if( i != const_cast<ptr_map_adapter_base*>(this)->end() ) |
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135 | return *i; |
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136 | else |
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137 | throw bad_ptr_container_operation( "'ptr_map/multimap::at()' could" |
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138 | " not find key" ); |
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139 | } |
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140 | |
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141 | struct eraser // scope guard |
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142 | { |
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143 | bool released_; |
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144 | VoidPtrMap* m_; |
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145 | const key_type& key_; |
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146 | |
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147 | eraser( VoidPtrMap* m, const key_type& key ) |
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148 | : released_(false), m_(m), key_(key) |
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149 | {} |
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150 | |
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151 | ~eraser() |
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152 | { |
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153 | if( !released_ ) |
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154 | m_->erase(key_); |
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155 | } |
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156 | |
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157 | void release() { released_ = true; } |
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158 | }; |
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159 | |
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160 | reference insert_lookup( const key_type& key ) |
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161 | { |
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162 | void*& ref = this->c_private()[key]; |
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163 | if( ref ) |
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164 | { |
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165 | value_type v = static_cast<value_type>( ref ); |
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166 | return *v; |
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167 | } |
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168 | else |
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169 | { |
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170 | eraser e(&this->c_private(),key); // nothrow |
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171 | value_type res = new T(); // strong |
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172 | ref = res; // nothrow |
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173 | e.release(); // nothrow |
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174 | return *res; |
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175 | } |
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176 | } |
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177 | |
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178 | public: |
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179 | |
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180 | BOOST_PTR_CONTAINER_DEFINE_CONSTRUCTORS( ptr_map_adapter_base, |
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181 | base_type ); |
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182 | |
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183 | template< class Compare, class Allocator > |
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184 | explicit ptr_map_adapter_base( const Compare& comp, |
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185 | const Allocator& a ) |
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186 | : base_type( comp, a ) |
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187 | { } |
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188 | |
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189 | template< class PtrContainer > |
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190 | ptr_map_adapter_base( std::auto_ptr<PtrContainer> clone ) |
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191 | : base_type( clone ) |
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192 | { } |
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193 | |
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194 | template< typename PtrContainer > |
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195 | void operator=( std::auto_ptr<PtrContainer> clone ) |
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196 | { |
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197 | base_type::operator=( clone ); |
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198 | } |
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199 | |
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200 | iterator find( const key_type& x ) |
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201 | { |
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202 | return iterator( this->c_private().find( x ) ); |
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203 | } |
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204 | |
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205 | const_iterator find( const key_type& x ) const |
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206 | { |
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207 | return const_iterator( this->c_private().find( x ) ); |
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208 | } |
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209 | |
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210 | size_type count( const key_type& x ) const |
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211 | { |
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212 | return this->c_private().count( x ); |
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213 | } |
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214 | |
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215 | iterator lower_bound( const key_type& x ) |
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216 | { |
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217 | return iterator( this->c_private().lower_bound( x ) ); |
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218 | } |
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219 | |
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220 | const_iterator lower_bound( const key_type& x ) const |
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221 | { |
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222 | return const_iterator( this->c_private().lower_bound( x ) ); |
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223 | } |
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224 | |
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225 | iterator upper_bound( const key_type& x ) |
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226 | { |
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227 | return iterator( this->c_private().upper_bound( x ) ); |
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228 | } |
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229 | |
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230 | const_iterator upper_bound( const key_type& x ) const |
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231 | { |
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232 | return const_iterator( this->c_private().upper_bound( x ) ); |
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233 | } |
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234 | |
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235 | iterator_range<iterator> equal_range( const key_type& x ) |
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236 | { |
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237 | std::pair<BOOST_DEDUCED_TYPENAME base_type::ptr_iterator, |
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238 | BOOST_DEDUCED_TYPENAME base_type::ptr_iterator> |
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239 | p = this->c_private().equal_range( x ); |
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240 | return make_iterator_range( iterator( p.first ), iterator( p.second ) ); |
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241 | } |
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242 | |
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243 | iterator_range<const_iterator> equal_range( const key_type& x ) const |
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244 | { |
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245 | std::pair<BOOST_DEDUCED_TYPENAME base_type::ptr_const_iterator, |
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246 | BOOST_DEDUCED_TYPENAME base_type::ptr_const_iterator> |
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247 | p = this->c_private().equal_range( x ); |
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248 | return make_iterator_range( const_iterator( p.first ), const_iterator( p.second ) ); |
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249 | } |
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250 | |
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251 | reference at( const key_type& key ) |
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252 | { |
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253 | return lookup( key ); |
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254 | } |
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255 | |
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256 | const_reference at( const key_type& key ) const |
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257 | { |
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258 | return lookup( key ); |
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259 | } |
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260 | |
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261 | reference operator[]( const key_type& key ) |
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262 | { |
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263 | return insert_lookup( key ); |
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264 | } |
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265 | |
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266 | auto_type replace( iterator where, value_type x ) // strong |
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267 | { |
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268 | BOOST_ASSERT( where != this->end() ); |
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269 | |
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270 | this->enforce_null_policy( x, "Null pointer in 'replace()'" ); |
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271 | |
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272 | auto_type ptr( x ); |
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273 | |
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274 | if( this->empty() ) |
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275 | throw bad_ptr_container_operation( "'replace()' on empty container" ); |
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276 | |
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277 | auto_type old( &*where ); // nothrow |
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278 | where.base()->second = ptr.release(); // nothrow, commit |
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279 | return move( old ); |
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280 | } |
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281 | |
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282 | }; |
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283 | |
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284 | } // ptr_container_detail |
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285 | |
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286 | ///////////////////////////////////////////////////////////////////////// |
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287 | // ptr_map_adapter |
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288 | ///////////////////////////////////////////////////////////////////////// |
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289 | |
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290 | template |
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291 | < |
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292 | class T, |
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293 | class VoidPtrMap, |
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294 | class CloneAllocator = heap_clone_allocator |
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295 | > |
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296 | class ptr_map_adapter : |
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297 | public ptr_container_detail::ptr_map_adapter_base<T,VoidPtrMap,CloneAllocator> |
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298 | { |
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299 | typedef ptr_container_detail::ptr_map_adapter_base<T,VoidPtrMap,CloneAllocator> |
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300 | base_type; |
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301 | |
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302 | public: |
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303 | typedef BOOST_DEDUCED_TYPENAME base_type::iterator |
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304 | iterator; |
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305 | typedef BOOST_DEDUCED_TYPENAME base_type::const_iterator |
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306 | const_iterator; |
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307 | typedef BOOST_DEDUCED_TYPENAME base_type::object_type |
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308 | object_type; |
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309 | typedef BOOST_DEDUCED_TYPENAME base_type::size_type |
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310 | size_type; |
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311 | typedef BOOST_DEDUCED_TYPENAME base_type::key_type |
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312 | key_type; |
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313 | typedef BOOST_DEDUCED_TYPENAME base_type::const_reference |
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314 | const_reference; |
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315 | typedef BOOST_DEDUCED_TYPENAME base_type::auto_type |
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316 | auto_type; |
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317 | typedef BOOST_DEDUCED_TYPENAME VoidPtrMap::key_compare |
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318 | key_compare; |
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319 | typedef BOOST_DEDUCED_TYPENAME VoidPtrMap::allocator_type |
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320 | allocator_type; |
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321 | typedef BOOST_DEDUCED_TYPENAME base_type::value_type |
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322 | value_type; |
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323 | private: |
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324 | |
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325 | void safe_insert( const key_type& key, auto_type ptr ) // strong |
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326 | { |
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327 | std::pair<BOOST_DEDUCED_TYPENAME base_type::ptr_iterator,bool> |
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328 | res = |
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329 | this->c_private().insert( std::make_pair( key, ptr.get() ) ); // strong, commit |
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330 | if( res.second ) // nothrow |
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331 | ptr.release(); // nothrow |
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332 | } |
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333 | |
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334 | template< class II > |
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335 | void map_basic_clone_and_insert( II first, II last ) |
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336 | { |
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337 | while( first != last ) |
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338 | { |
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339 | if( this->find( first.key() ) == this->end() ) |
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340 | { |
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341 | const object_type& p = *first.base(); // nothrow |
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342 | auto_type ptr( this->null_policy_allocate_clone( |
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343 | static_cast<value_type>(p.second) ) ); |
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344 | // strong |
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345 | this->safe_insert( p.first, ptr_container_detail:: |
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346 | move( ptr ) );// strong, commit |
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347 | } |
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348 | ++first; |
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349 | } |
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350 | } |
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351 | |
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352 | public: |
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353 | |
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354 | explicit ptr_map_adapter( const key_compare& comp = key_compare(), |
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355 | const allocator_type& a = allocator_type() ) |
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356 | : base_type( comp, a ) { } |
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357 | |
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358 | template< class InputIterator > |
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359 | ptr_map_adapter( InputIterator first, InputIterator last, |
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360 | const key_compare& comp = key_compare(), |
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361 | const allocator_type& a = allocator_type() ) |
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362 | : base_type( comp, a ) |
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363 | { |
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364 | map_basic_clone_and_insert( first, last ); |
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365 | } |
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366 | |
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367 | template< class U > |
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368 | ptr_map_adapter( std::auto_ptr<U> r ) : base_type( r ) |
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369 | { } |
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370 | |
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371 | template< class U > |
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372 | void operator=( std::auto_ptr<U> r ) |
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373 | { |
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374 | base_type::operator=( r ); |
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375 | } |
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376 | |
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377 | using base_type::release; |
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378 | |
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379 | template< typename InputIterator > |
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380 | void insert( InputIterator first, InputIterator last ) // basic |
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381 | { |
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382 | map_basic_clone_and_insert( first, last ); |
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383 | } |
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384 | |
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385 | template< class Range > |
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386 | void insert( const Range& r ) |
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387 | { |
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388 | insert( this->adl_begin(r), this->adl_end(r) ); |
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389 | } |
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390 | |
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391 | std::pair<iterator,bool> insert( key_type& key, value_type x ) // strong |
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392 | { |
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393 | this->enforce_null_policy( x, "Null pointer in ptr_map_adapter::insert()" ); |
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394 | auto_type ptr( x ); // nothrow |
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395 | |
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396 | std::pair<BOOST_DEDUCED_TYPENAME base_type::ptr_iterator,bool> |
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397 | res = this->c_private().insert( std::make_pair( key, x ) ); // strong, commit |
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398 | if( res.second ) // nothrow |
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399 | ptr.release(); // nothrow |
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400 | return std::make_pair( iterator( res.first ), res.second ); // nothrow |
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401 | } |
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402 | |
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403 | bool transfer( iterator object, |
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404 | ptr_map_adapter& from ) // strong |
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405 | { |
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406 | return this->single_transfer( object, from ); |
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407 | } |
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408 | |
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409 | size_type transfer( iterator first, |
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410 | iterator last, |
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411 | ptr_map_adapter& from ) // basic |
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412 | { |
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413 | return this->single_transfer( first, last, from ); |
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414 | } |
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415 | |
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416 | #ifdef BOOST_NO_SFINAE |
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417 | #else |
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418 | |
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419 | template< class Range > |
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420 | BOOST_DEDUCED_TYPENAME boost::disable_if< boost::is_same< Range, |
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421 | iterator >, |
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422 | size_type >::type |
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423 | transfer( const Range& r, ptr_map_adapter& from ) // basic |
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424 | { |
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425 | return transfer( this->adl_begin(r), this->adl_end(r), from ); |
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426 | } |
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427 | |
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428 | #endif |
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429 | |
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430 | size_type transfer( ptr_map_adapter& from ) // basic |
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431 | { |
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432 | return transfer( from.begin(), from.end(), from ); |
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433 | } |
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434 | |
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435 | }; |
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436 | |
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437 | ///////////////////////////////////////////////////////////////////////// |
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438 | // ptr_multimap_adapter |
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439 | ///////////////////////////////////////////////////////////////////////// |
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440 | |
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441 | template |
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442 | < |
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443 | class T, |
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444 | class VoidPtrMultiMap, |
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445 | class CloneAllocator = heap_clone_allocator |
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446 | > |
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447 | class ptr_multimap_adapter : |
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448 | public ptr_container_detail::ptr_map_adapter_base<T,VoidPtrMultiMap,CloneAllocator> |
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449 | { |
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450 | typedef ptr_container_detail::ptr_map_adapter_base<T,VoidPtrMultiMap,CloneAllocator> |
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451 | base_type; |
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452 | |
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453 | public: // typedefs |
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454 | typedef BOOST_DEDUCED_TYPENAME base_type::iterator |
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455 | iterator; |
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456 | typedef BOOST_DEDUCED_TYPENAME base_type::const_iterator |
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457 | const_iterator; |
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458 | typedef BOOST_DEDUCED_TYPENAME base_type::object_type |
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459 | object_type; |
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460 | typedef BOOST_DEDUCED_TYPENAME base_type::size_type |
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461 | size_type; |
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462 | typedef BOOST_DEDUCED_TYPENAME base_type::key_type |
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463 | key_type; |
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464 | typedef BOOST_DEDUCED_TYPENAME base_type::const_reference |
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465 | const_reference; |
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466 | typedef BOOST_DEDUCED_TYPENAME base_type::value_type |
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467 | value_type; |
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468 | typedef BOOST_DEDUCED_TYPENAME base_type::auto_type |
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469 | auto_type; |
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470 | typedef BOOST_DEDUCED_TYPENAME VoidPtrMultiMap::key_compare |
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471 | key_compare; |
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472 | typedef BOOST_DEDUCED_TYPENAME VoidPtrMultiMap::allocator_type |
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473 | allocator_type; |
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474 | private: |
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475 | |
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476 | void safe_insert( const key_type& key, auto_type ptr ) // strong |
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477 | { |
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478 | this->c_private().insert( |
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479 | std::make_pair( key, ptr.get() ) ); // strong, commit |
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480 | ptr.release(); // nothrow |
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481 | } |
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482 | |
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483 | template< typename II > |
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484 | void map_basic_clone_and_insert( II first, II last ) |
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485 | { |
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486 | while( first != last ) |
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487 | { |
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488 | const object_type& pair = *first.base(); // nothrow |
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489 | auto_type ptr( this->null_policy_allocate_clone( |
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490 | static_cast<value_type>( pair.second ) ) ); |
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491 | // strong |
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492 | safe_insert( pair.first, ptr_container_detail:: |
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493 | move( ptr ) ); // strong, commit |
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494 | ++first; |
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495 | } |
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496 | } |
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497 | |
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498 | public: |
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499 | |
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500 | explicit ptr_multimap_adapter( const key_compare& comp = key_compare(), |
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501 | const allocator_type& a = allocator_type() ) |
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502 | : base_type( comp, a ) { } |
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503 | |
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504 | template< class InputIterator > |
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505 | ptr_multimap_adapter( InputIterator first, InputIterator last, |
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506 | const key_compare& comp = key_compare(), |
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507 | const allocator_type& a = allocator_type() ) |
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508 | : base_type( comp, a ) |
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509 | { |
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510 | map_basic_clone_and_insert( first, last ); |
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511 | } |
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512 | |
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513 | template< class U > |
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514 | ptr_multimap_adapter( std::auto_ptr<U> r ) : base_type( r ) |
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515 | { } |
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516 | |
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517 | template< class U > |
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518 | void operator=( std::auto_ptr<U> r ) |
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519 | { |
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520 | base_type::operator=( r ); |
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521 | } |
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522 | |
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523 | using base_type::release; |
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524 | |
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525 | template< typename InputIterator > |
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526 | void insert( InputIterator first, InputIterator last ) // basic |
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527 | { |
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528 | map_basic_clone_and_insert( first, last ); |
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529 | } |
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530 | |
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531 | template< class Range > |
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532 | void insert( const Range& r ) |
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533 | { |
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534 | insert( this->adl_begin(r), this->adl_end(r) ); |
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535 | } |
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536 | |
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537 | iterator insert( key_type& key, value_type x ) // strong |
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538 | { |
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539 | this->enforce_null_policy( x, "Null pointer in 'ptr_multimap_adapter::insert()'" ); |
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540 | |
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541 | auto_type ptr( x ); // nothrow |
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542 | BOOST_DEDUCED_TYPENAME base_type::ptr_iterator |
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543 | res = this->c_private().insert( std::make_pair( key, x ) ); |
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544 | // strong, commit |
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545 | ptr.release(); // notrow |
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546 | return iterator( res ); |
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547 | } |
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548 | |
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549 | |
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550 | void transfer( iterator object, |
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551 | ptr_multimap_adapter& from ) // strong |
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552 | { |
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553 | this->multi_transfer( object, from ); |
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554 | } |
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555 | |
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556 | size_type transfer( iterator first, |
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557 | iterator last, |
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558 | ptr_multimap_adapter& from ) // basic |
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559 | { |
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560 | return this->multi_transfer( first, last, from ); |
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561 | } |
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562 | |
---|
563 | #ifdef BOOST_NO_SFINAE |
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564 | #else |
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565 | |
---|
566 | template< class Range > |
---|
567 | BOOST_DEDUCED_TYPENAME boost::disable_if< boost::is_same< Range, |
---|
568 | iterator >, |
---|
569 | size_type >::type |
---|
570 | transfer( const Range& r, ptr_multimap_adapter& from ) // basic |
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571 | { |
---|
572 | return transfer( this->adl_begin(r), this->adl_end(r), from ); |
---|
573 | } |
---|
574 | |
---|
575 | #endif |
---|
576 | |
---|
577 | void transfer( ptr_multimap_adapter& from ) // basic |
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578 | { |
---|
579 | transfer( from.begin(), from.end(), from ); |
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580 | BOOST_ASSERT( from.empty() ); |
---|
581 | } |
---|
582 | }; |
---|
583 | |
---|
584 | template< class I, class K, class V > |
---|
585 | inline bool is_null( ptr_map_iterator<I,K,V> i ) |
---|
586 | { |
---|
587 | return i.base()->second == 0; |
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588 | } |
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589 | |
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590 | } // namespace 'boost' |
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591 | |
---|
592 | #endif |
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