223 lines
7.1 KiB
C++
223 lines
7.1 KiB
C++
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#ifndef MAP_HPP
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# define MAP_HPP
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# include <memory> // std::allocator
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# include <cstddef> // NULL, std::size_t, std::ptrdiff_t
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# include <algorithm> // std::max()
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# include <functional> // std::less, std::binary_function
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# include "reverse_iterator.hpp"
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# include "equal.hpp"
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# include "lexicographical_compare.hpp"
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# include "pair.hpp"
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# include "map_node.hpp"
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# include "map_iterator.hpp"
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namespace ft {
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template <
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class Key, // map::key_type
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class T, // map::mapped_type
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class Compare = std::less<Key>, // map::key_compare
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class Alloc = std::allocator< ft::pair<const Key, T> > // map::allocator_type
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> class map {
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public:
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typedef Key key_type;
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typedef T mapped_type;
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typedef pair<const Key, T> value_type;
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typedef std::size_t size_type;
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typedef std::ptrdiff_t difference_type;
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typedef Compare key_compare;
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typedef Alloc allocator_type;
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typedef map_iterator<Key, T, Compare, Alloc> iterator;
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typedef map_const_iterator<Key, T, Compare, Alloc> const_iterator;
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typedef ft::reverse_iterator<iterator> reverse_iterator;
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typedef ft::reverse_iterator<const_iterator> const_reverse_iterator;
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/****************
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* member class :
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****************/
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// https://en.cppreference.com/w/cpp/container/map/value_compare
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// https://stackoverflow.com/questions/4571355/why-would-one-use-nested-classes-in-c
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class value_compare : public std::binary_function<value_type, value_type, bool> {
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friend class map;
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protected:
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Compare comp;
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value_compare(Compare c) : comp(c) {}
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public:
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bool operator() (const value_type& x, const value_type& y) const
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{ return comp(x.first, y.first); }
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};
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/************
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* copliens :
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************/
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// constructors ------------------------------
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explicit map (const key_compare& comp = key_compare(),
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const allocator_type& alloc = allocator_type());
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template <class InputIterator>
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map (InputIterator first, InputIterator last,
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const key_compare& comp = key_compare(),
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const allocator_type& alloc = allocator_type());
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map(const map& x);
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// destructor --------------------------------
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~map();
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// operator= ---------------------------------
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map& operator= (const map& x);
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/*************
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* iterators :
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*************/
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// begin -------------------------------------
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iterator begin();
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const_iterator begin() const;
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// end ---------------------------------------
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iterator end();
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const_iterator end() const;
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// rbegin ------------------------------------
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reverse_iterator rbegin();
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const_reverse_iterator rbegin() const;
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// rend --------------------------------------
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reverse_iterator rend();
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const_reverse_iterator rend() const;
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/************
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* capacity :
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************/
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// empty -------------------------------------
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bool empty() const;
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// size --------------------------------------
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size_type size() const;
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// max_size ----------------------------------
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size_type max_size() const;
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/******************
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* element access :
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******************/
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// operator[] --------------------------------
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mapped_type & operator[] (const key_type& k);
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/*************
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* modifiers :
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*************/
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// insert ------------------------------------
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pair<iterator,bool> insert (const value_type& val);
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iterator insert (iterator position, const value_type& val);
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template <class InputIterator>
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void insert (InputIterator first, InputIterator last);
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// erase -------------------------------------
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void erase (iterator position);
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size_type erase (const key_type& k);
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void erase (iterator first, iterator last);
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// swap --------------------------------------
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void swap (map& x);
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// clear -------------------------------------
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void clear();
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/*************
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* observers :
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*************/
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// key_comp ----------------------------------
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key_compare key_comp() const;
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// value_comp --------------------------------
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value_compare value_comp() const;
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/**************
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* operations :
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**************/
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// find --------------------------------------
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iterator find (const key_type& k);
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const_iterator find (const key_type& k) const;
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// count -------------------------------------
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size_type count (const key_type& k) const;
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// lower_bound -------------------------------
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iterator lower_bound (const key_type& k);
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const_iterator lower_bound (const key_type& k) const;
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// upper_bound -------------------------------
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iterator upper_bound (const key_type& k);
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const_iterator upper_bound (const key_type& k) const;
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// equal_range -------------------------------
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pair<const_iterator,const_iterator> equal_range (const key_type& k) const;
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pair<iterator,iterator> equal_range (const key_type& k);
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/*************
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* allocator :
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*************/
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// get_allocator -----------------------------
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allocator_type get_allocator() const;
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private:
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size_type _size;
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node<value_type>* _root;
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sentinel<value_type>* _sentinel;
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Compare _comp;
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Alloc _allocator;
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// https://stackoverflow.com/questions/14148756/what-does-template-rebind-do
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typename Alloc::template rebind< node<value_type> >::other _allocator_node;
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typename Alloc::template rebind< sentinel<value_type> >::other _allocator_sentinel;
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// BBST
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enum {INSERT, ERASE};
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node<value_type>* _swap_nodes(node<value_type>* st_old, node<value_type>* st_new);
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void _balance(node<value_type>* n, bool action);
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short _compute_height(node<value_type>* n);
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short _balance_factor(node<value_type>* n);
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node<value_type>* _rotate_left(node<value_type>* n);
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node<value_type>* _rotate_right(node<value_type>* n);
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};
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/************************
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* non-member functions :
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************************/
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// operator == -------------------------------
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template< class K, class T, class Comp, class Alloc > bool operator==
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( const std::map<K,T,Comp,Alloc>& lhs, const std::map<K,T,Comp,Alloc>& rhs );
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// operator != -------------------------------
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template< class K, class T, class Comp, class Alloc > bool operator!=
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( const std::map<K,T,Comp,Alloc>& lhs, const std::map<K,T,Comp,Alloc>& rhs );
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// operator < --------------------------------
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template< class K, class T, class Comp, class Alloc > bool operator<
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( const std::map<K,T,Comp,Alloc>& lhs, const std::map<K,T,Comp,Alloc>& rhs );
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// operator <= -------------------------------
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template< class K, class T, class Comp, class Alloc > bool operator<=
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( const std::map<K,T,Comp,Alloc>& lhs, const std::map<K,T,Comp,Alloc>& rhs );
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// operator > --------------------------------
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template< class K, class T, class Comp, class Alloc > bool operator>
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( const std::map<K,T,Comp,Alloc>& lhs, const std::map<K,T,Comp,Alloc>& rhs );
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// operator >= -------------------------------
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template< class K, class T, class Comp, class Alloc > bool operator>=
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( const std::map<K,T,Comp,Alloc>& lhs, const std::map<K,T,Comp,Alloc>& rhs );
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// swap (map) -----------------------------
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template< class Key, class T, class Compare, class Alloc > void swap
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( std::map<Key,T,Compare,Alloc>& lhs, std::map<Key,T,Compare,Alloc>& rhs );
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} // namespace ft
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# include "map.tpp"
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// banlanced binary search tree :
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// https://www.youtube.com/watch?v=vRwi_UcZGjU
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// entinel node :
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// https://en.wikipedia.org/wiki/Sentinel_node
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#endif
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