set_view_iterator.hpp 4.9 KB

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  1. // Boost.Bimap
  2. //
  3. // Copyright (c) 2006-2007 Matias Capeletto
  4. //
  5. // Distributed under the Boost Software License, Version 1.0.
  6. // (See accompanying file LICENSE_1_0.txt or copy at
  7. // http://www.boost.org/LICENSE_1_0.txt)
  8. /// \file detail/set_view_iterator.hpp
  9. /// \brief Iterator adaptors from multi-index to bimap.
  10. #ifndef BOOST_BIMAP_DETAIL_SET_VIEW_ITERATOR_HPP
  11. #define BOOST_BIMAP_DETAIL_SET_VIEW_ITERATOR_HPP
  12. #if defined(_MSC_VER)
  13. #pragma once
  14. #endif
  15. #include <boost/config.hpp>
  16. // Boost
  17. #ifndef BOOST_BIMAP_DISABLE_SERIALIZATION
  18. #include <boost/serialization/nvp.hpp>
  19. #endif // BOOST_BIMAP_DISABLE_SERIALIZATION
  20. #include <boost/iterator/detail/enable_if.hpp>
  21. #include <boost/iterator/iterator_adaptor.hpp>
  22. #include <boost/bimap/relation/support/get_pair_functor.hpp>
  23. namespace boost {
  24. namespace bimaps {
  25. namespace detail {
  26. /** \brief Set View Iterator adaptor from multi index to bimap.
  27. This is class is based on transform iterator from Boost.Iterator that is
  28. modified to allow serialization. It has been specialized for this
  29. library, and EBO optimization was applied to the functor.
  30. **/
  31. #ifndef BOOST_BIMAP_DOXYGEN_WILL_NOT_PROCESS_THE_FOLLOWING_LINES
  32. template< class CoreIterator > struct set_view_iterator;
  33. template< class CoreIterator >
  34. struct set_view_iterator_base
  35. {
  36. typedef iterator_adaptor
  37. <
  38. set_view_iterator< CoreIterator >,
  39. CoreIterator,
  40. BOOST_DEDUCED_TYPENAME CoreIterator::value_type::above_view
  41. > type;
  42. };
  43. #endif // BOOST_BIMAP_DOXYGEN_WILL_NOT_PROCESS_THE_FOLLOWING_LINES
  44. template< class CoreIterator >
  45. struct set_view_iterator : public set_view_iterator_base<CoreIterator>::type
  46. {
  47. typedef BOOST_DEDUCED_TYPENAME set_view_iterator_base<CoreIterator>::type base_;
  48. public:
  49. set_view_iterator() {}
  50. set_view_iterator(CoreIterator const& iter)
  51. : base_(iter) {}
  52. set_view_iterator(set_view_iterator const & iter)
  53. : base_(iter.base()) {}
  54. typename base_::reference dereference() const
  55. {
  56. return const_cast<
  57. BOOST_DEDUCED_TYPENAME base_::base_type::value_type*>(
  58. &(*this->base())
  59. )->get_view();
  60. }
  61. private:
  62. friend class iterator_core_access;
  63. #ifndef BOOST_BIMAP_DISABLE_SERIALIZATION
  64. // Serialization support
  65. BOOST_SERIALIZATION_SPLIT_MEMBER()
  66. friend class ::boost::serialization::access;
  67. template< class Archive >
  68. void save(Archive & ar, const unsigned int) const
  69. {
  70. ar << ::boost::serialization::make_nvp("mi_iterator",this->base());
  71. }
  72. template< class Archive >
  73. void load(Archive & ar, const unsigned int)
  74. {
  75. CoreIterator iter;
  76. ar >> ::boost::serialization::make_nvp("mi_iterator",iter);
  77. this->base_reference() = iter;
  78. }
  79. #endif // BOOST_BIMAP_DISABLE_SERIALIZATION
  80. };
  81. #ifndef BOOST_BIMAP_DOXYGEN_WILL_NOT_PROCESS_THE_FOLLOWING_LINES
  82. template< class CoreIterator > struct const_set_view_iterator;
  83. template< class CoreIterator >
  84. struct const_set_view_iterator_base
  85. {
  86. typedef iterator_adaptor
  87. <
  88. const_set_view_iterator< CoreIterator >,
  89. CoreIterator,
  90. const BOOST_DEDUCED_TYPENAME CoreIterator::value_type::above_view
  91. > type;
  92. };
  93. #endif // BOOST_BIMAP_DOXYGEN_WILL_NOT_PROCESS_THE_FOLLOWING_LINES
  94. /** \brief Const Set View Iterator adaptor from multi index to bimap.
  95. See also set_view_iterator.
  96. **/
  97. template< class CoreIterator >
  98. struct const_set_view_iterator : public const_set_view_iterator_base<CoreIterator>::type
  99. {
  100. typedef BOOST_DEDUCED_TYPENAME const_set_view_iterator_base<CoreIterator>::type base_;
  101. public:
  102. const_set_view_iterator() {}
  103. const_set_view_iterator(CoreIterator const& iter)
  104. : base_(iter) {}
  105. const_set_view_iterator(const_set_view_iterator const & iter)
  106. : base_(iter.base()) {}
  107. const_set_view_iterator(set_view_iterator<CoreIterator> i)
  108. : base_(i.base()) {}
  109. BOOST_DEDUCED_TYPENAME base_::reference dereference() const
  110. {
  111. return this->base()->get_view();
  112. }
  113. private:
  114. friend class iterator_core_access;
  115. #ifndef BOOST_BIMAP_DISABLE_SERIALIZATION
  116. // Serialization support
  117. BOOST_SERIALIZATION_SPLIT_MEMBER()
  118. friend class ::boost::serialization::access;
  119. template< class Archive >
  120. void save(Archive & ar, const unsigned int) const
  121. {
  122. ar << ::boost::serialization::make_nvp("mi_iterator",this->base());
  123. }
  124. template< class Archive >
  125. void load(Archive & ar, const unsigned int)
  126. {
  127. CoreIterator iter;
  128. ar >> ::boost::serialization::make_nvp("mi_iterator",iter);
  129. this->base_reference() = iter;
  130. }
  131. #endif // BOOST_BIMAP_DISABLE_SERIALIZATION
  132. };
  133. } // namespace detail
  134. } // namespace bimaps
  135. } // namespace boost
  136. #endif // BOOST_BIMAP_DETAIL_MAP_VIEW_ITERATOR_HPP