map.hpp

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   #ifndef BOOST_INTERPROCESS_RVALUE_REFERENCE
   T& operator[](const detail::moved_object<key_type>& mk) 
   {
      key_type &k = mk.get();
      //we can optimize this
      iterator i = lower_bound(k);
      // i->first is greater than or equivalent to k.
      if (i == end() || key_comp()(k, (*i).first)){
         value_type val(k, detail::move_impl(T()));
         i = insert(i, detail::move_impl(val));
      }
      return (*i).second;
   }
   #else
   T& operator[](key_type &&mk) 
   {
      key_type &k = mk;
      //we can optimize this
      iterator i = lower_bound(k);
      // i->first is greater than or equivalent to k.
      if (i == end() || key_comp()(k, (*i).first)){
         value_type val(detail::move_impl(k), detail::move_impl(T()));
         i = insert(i, detail::move_impl(val));
      }
      return (*i).second;
   }
   #endif

/*
   //! Effects: If there is no key equivalent to x in the map, inserts 
   //! value_type(detail::move_impl(x), T()) into the map (the key is move-constructed)
   //! 
   //! Returns: A reference to the mapped_type corresponding to x in *this.
   //! 
   //! Complexity: Logarithmic.
   T& at(const key_type& x)
   {
      if(this->find(x) == this->end()){
         
      }
      key_type &k = mk.get();
      //we can optimize this
      iterator i = lower_bound(k);
      // i->first is greater than or equivalent to k.
      if (i == end() || key_comp()(k, (*i).first)){
         value_type val(k, detail::move_impl(T()));
         i = insert(i, detail::move_impl(val));
      }
      return (*i).second;
   }

//;
//const T& at(const key_type& x) const;
//4 Returns: A reference to the element whose key is equivalent to x.
//5 Throws: An exception object of type out_of_range if no such element is present.
*/

   //! <b>Effects</b>: Swaps the contents of *this and x.
   //!   If this->allocator_type() != x.allocator_type() allocators are also swapped.
   //!
   //! <b>Throws</b>: Nothing.
   //!
   //! <b>Complexity</b>: Constant.
   void swap(map<Key,T,Pred,Alloc>& x) 
   { m_tree.swap(x.m_tree); }

   //! <b>Effects</b>: Swaps the contents of *this and x.
   //!   If this->allocator_type() != x.allocator_type() allocators are also swapped.
   //!
   //! <b>Throws</b>: Nothing.
   //!
   //! <b>Complexity</b>: Constant.
   #ifndef BOOST_INTERPROCESS_RVALUE_REFERENCE
   void swap(const detail::moved_object<map<Key,T,Pred,Alloc> >& x) 
   { m_tree.swap(x.get().m_tree); }
   #else
   void swap(map<Key,T,Pred,Alloc> &&x) 
   { m_tree.swap(x.m_tree); }
   #endif

   //! <b>Effects</b>: Inserts x if and only if there is no element in the container 
   //!   with key equivalent to the key of x.
   //!
   //! <b>Returns</b>: The bool component of the returned pair is true if and only 
   //!   if the insertion takes place, and the iterator component of the pair
   //!   points to the element with key equivalent to the key of x.
   //!
   //! <b>Complexity</b>: Logarithmic.
   std::pair<iterator,bool> insert(const value_type& x) 
   { return m_tree.insert_unique(x); }

   //! <b>Effects</b>: Inserts a new value_type created from the pair if and only if 
   //! there is no element in the container  with key equivalent to the key of x.
   //!
   //! <b>Returns</b>: The bool component of the returned pair is true if and only 
   //!   if the insertion takes place, and the iterator component of the pair
   //!   points to the element with key equivalent to the key of x.
   //!
   //! <b>Complexity</b>: Logarithmic.
   std::pair<iterator,bool> insert(const std::pair<key_type, mapped_type>& x) 
   { return m_tree.insert_unique(x); }

   //! <b>Effects</b>: Inserts a new value_type move constructed from the pair if and
   //! only if there is no element in the container with key equivalent to the key of x.
   //!
   //! <b>Returns</b>: The bool component of the returned pair is true if and only 
   //!   if the insertion takes place, and the iterator component of the pair
   //!   points to the element with key equivalent to the key of x.
   //!
   //! <b>Complexity</b>: Logarithmic.
   #ifndef BOOST_INTERPROCESS_RVALUE_REFERENCE
   std::pair<iterator,bool> insert(const detail::moved_object<std::pair<key_type, mapped_type> > &x) 
   { return m_tree.insert_unique(x); }
   #else
   std::pair<iterator,bool> insert(std::pair<key_type, mapped_type> &&x) 
   { return m_tree.insert_unique(detail::move_impl(x)); }
   #endif

   //! <b>Effects</b>: Move constructs a new value from x if and only if there is 
   //!   no element in the container with key equivalent to the key of x.
   //!
   //! <b>Returns</b>: The bool component of the returned pair is true if and only 
   //!   if the insertion takes place, and the iterator component of the pair
   //!   points to the element with key equivalent to the key of x.
   //!
   //! <b>Complexity</b>: Logarithmic.
   #ifndef BOOST_INTERPROCESS_RVALUE_REFERENCE
   std::pair<iterator,bool> insert(const detail::moved_object<value_type>& x) 
   { return m_tree.insert_unique(x); }
   #else
   std::pair<iterator,bool> insert(value_type &&x) 
   { return m_tree.insert_unique(detail::move_impl(x)); }
   #endif

   //! <b>Effects</b>: Inserts a copy of x in the container if and only if there is 
   //!   no element in the container with key equivalent to the key of x.
   //!   p is a hint pointing to where the insert should start to search.
   //!
   //! <b>Returns</b>: An iterator pointing to the element with key equivalent
   //!   to the key of x.
   //!
   //! <b>Complexity</b>: Logarithmic in general, but amortized constant if t
   //!   is inserted right before p.
   iterator insert(iterator position, const value_type& x)
   { return m_tree.insert_unique(position, x); }

   //! <b>Effects</b>: Move constructs a new value from x if and only if there is 
   //!   no element in the container with key equivalent to the key of x.
   //!   p is a hint pointing to where the insert should start to search.
   //!
   //! <b>Returns</b>: An iterator pointing to the element with key equivalent
   //!   to the key of x.
   //!
   //! <b>Complexity</b>: Logarithmic in general, but amortized constant if t
   //!   is inserted right before p.
   #ifndef BOOST_INTERPROCESS_RVALUE_REFERENCE
   iterator insert(iterator position, const detail::moved_object<std::pair<key_type, mapped_type> > &x)
   { return m_tree.insert_unique(position, x); }
   #else
   iterator insert(iterator position, std::pair<key_type, mapped_type> &&x)
   { return m_tree.insert_unique(position, detail::move_impl(x)); }
   #endif

   //! <b>Effects</b>: Inserts a copy of x in the container.
   //!   p is a hint pointing to where the insert should start to search.
   //!
   //! <b>Returns</b>: An iterator pointing to the element with key equivalent to the key of x.
   //!
   //! <b>Complexity</b>: Logarithmic.
   iterator insert(iterator position, const std::pair<key_type, mapped_type>& x)
   { return m_tree.insert_unique(position, x); }

   //! <b>Effects</b>: Inserts an element move constructed from x in the container.
   //!   p is a hint pointing to where the insert should start to search.
   //!
   //! <b>Returns</b>: An iterator pointing to the element with key equivalent to the key of x.
   //!
   //! <b>Complexity</b>: Logarithmic.
   #ifndef BOOST_INTERPROCESS_RVALUE_REFERENCE
   iterator insert(iterator position, const detail::moved_object<value_type>& x)
   { return m_tree.insert_unique(position, x); }
   #else
   iterator insert(iterator position, value_type &&x)
   { return m_tree.insert_unique(position, detail::move_impl(x)); }
   #endif

   //! <b>Requires</b>: i, j are not iterators into *this.
   //!
   //! <b>Effects</b>: inserts each element from the range [i,j) if and only 
   //!   if there is no element with key equivalent to the key of that element.
   //!
   //! <b>Complexity</b>: N log(size()+N) (N is the distance from i to j)
   template <class InputIterator>
   void insert(InputIterator first, InputIterator last) 
   {  m_tree.insert_unique(first, last);  }

   #ifdef BOOST_INTERPROCESS_PERFECT_FORWARDING

   //! <b>Effects</b>: Inserts an object of type T constructed with
   //!   std::forward<Args>(args)... in the container if and only if there is 
   //!   no element in the container with an equivalent key.
   //!   p is a hint pointing to where the insert should start to search.
   //!
   //! <b>Returns</b>: An iterator pointing to the element with key equivalent
   //!   to the key of x.
   //!
   //! <b>Complexity</b>: Logarithmic in general, but amortized constant if t
   //!   is inserted right before p.
   template <class... Args>
   iterator emplace(Args&&... args)
   {  return m_tree.emplace_unique(detail::forward_impl<Args>(args)...); }

   //! <b>Effects</b>: Inserts an object of type T constructed with
   //!   std::forward<Args>(args)... in the container if and only if there is 
   //!   no element in the container with an equivalent key.
   //!   p is a hint pointing to where the insert should start to search.
   //!
   //! <b>Returns</b>: An iterator pointing to the element with key equivalent
   //!   to the key of x.
   //!
   //! <b>Complexity</b>: Logarithmic in general, but amortized constant if t
   //!   is inserted right before p.
   template <class... Args>
   iterator emplace_hint(const_iterator hint, Args&&... args)
   {  return m_tree.emplace_hint_unique(hint, detail::forward_impl<Args>(args)...); }

   #else //#ifdef BOOST_INTERPROCESS_PERFECT_FORWARDING

   iterator emplace()
   {  return m_tree.emplace_unique(); }

   iterator emplace_hint(const_iterator hint)
   {  return m_tree.emplace_hint_unique(hint); }

   #define BOOST_PP_LOCAL_MACRO(n)                                                                       \
   template<BOOST_PP_ENUM_PARAMS(n, class P)>                                                            \
   iterator emplace(BOOST_PP_ENUM(n, BOOST_INTERPROCESS_PP_PARAM_LIST, _))                               \
   {  return m_tree.emplace_unique(BOOST_PP_ENUM(n, BOOST_INTERPROCESS_PP_PARAM_FORWARD, _)); }          \
                                                                                                         \
   template<BOOST_PP_ENUM_PARAMS(n, class P)>                                                            \
   iterator emplace_hint(const_iterator hint, BOOST_PP_ENUM(n, BOOST_INTERPROCESS_PP_PARAM_LIST, _))     \
   {  return m_tree.emplace_hint_unique(hint, BOOST_PP_ENUM(n, BOOST_INTERPROCESS_PP_PARAM_FORWARD, _));}\
   //!
   #define BOOST_PP_LOCAL_LIMITS (1, BOOST_INTERPROCESS_MAX_CONSTRUCTOR_PARAMETERS)
   #include BOOST_PP_LOCAL_ITERATE()

   #endif   //#ifdef BOOST_INTERPROCESS_PERFECT_FORWARDING

   //! <b>Effects</b>: Erases the element pointed to by position.
   //!
   //! <b>Returns</b>: Returns an iterator pointing to the element immediately
   //!   following q prior to the element being erased. If no such element exists, 
   //!   returns end().
   //!
   //! <b>Complexity</b>: Amortized constant time
   iterator erase(const_iterator position) 
   { return m_tree.erase(position); }

   //! <b>Effects</b>: Erases all elements in the container with key equivalent to x.
   //!
   //! <b>Returns</b>: Returns the number of erased elements.
   //!
   //! <b>Complexity</b>: log(size()) + count(k)
   size_type erase(const key_type& x) 
   { return m_tree.erase(x); }

   //! <b>Effects</b>: Erases all the elements in the range [first, last).
   //!
   //! <b>Returns</b>: Returns last.
   //!
   //! <b>Complexity</b>: log(size())+N where N is the distance from first to last.
   iterator erase(const_iterator first, const_iterator last)
   { return m_tree.erase(first, last); }

   //! <b>Effects</b>: erase(a.begin(),a.end()).
   //!
   //! <b>Postcondition</b>: size() == 0.
   //!
   //! <b>Complexity</b>: linear in size().
   void clear() 
   { m_tree.clear(); }

   //! <b>Returns</b>: An iterator pointing to an element with the key
   //!   equivalent to x, or end() if such an element is not found.
   //!
   //! <b>Complexity</b>: Logarithmic.
   iterator find(const key_type& x) 
   { return m_tree.find(x); }

   //! <b>Returns</b>: A const_iterator pointing to an element with the key
   //!   equivalent to x, or end() if such an element is not found.
   //!
   //! <b>Complexity</b>: Logarithmic.
   const_iterator find(const key_type& x) const 
   { return m_tree.find(x); }

   //! <b>Returns</b>: The number of elements with key equivalent to x.
   //!
   //! <b>Complexity</b>: log(size())+count(k)
   size_type count(const key_type& x) const 
   {  return m_tree.find(x) == m_tree.end() ? 0 : 1;  }

   //! <b>Returns</b>: An iterator pointing to the first element with key not less
   //!   than k, or a.end() if such an element is not found.
   //!
   //! <b>Complexity</b>: Logarithmic
   iterator lower_bound(const key_type& x) 
   {  return m_tree.lower_bound(x); }

   //! <b>Returns</b>: A const iterator pointing to the first element with key not
   //!   less than k, or a.end() if such an element is not found.
   //!
   //! <b>Complexity</b>: Logarithmic
   const_iterator lower_bound(const key_type& x) const 
   {  return m_tree.lower_bound(x); }

   //! <b>Returns</b>: An iterator pointing to the first element with key not less
   //!   than x, or end() if such an element is not found.
   //!
   //! <b>Complexity</b>: Logarithmic
   iterator upper_bound(const key_type& x) 
   {  return m_tree.upper_bound(x); }

   //! <b>Returns</b>: A const iterator pointing to the first element with key not
   //!   less than x, or end() if such an element is not found.
   //!
   //! <b>Complexity</b>: Logarithmic
   const_iterator upper_bound(const key_type& x) const 
   {  return m_tree.upper_bound(x); }

   //! <b>Effects</b>: Equivalent to std::make_pair(this->lower_bound(k), this->upper_bound(k)).
   //!
   //! <b>Complexity</b>: Logarithmic
   std::pair<iterator,iterator> equal_range(const key_type& x) 
   {  return m_tree.equal_range(x); }