146 lines
4.7 KiB
C++
146 lines
4.7 KiB
C++
/* ************************************************************************** */
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/* */
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/* ::: :::::::: */
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/* random_access_iterator.hpp :+: :+: :+: */
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/* +:+ +:+ +:+ */
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/* By: apommier <apommier@student.42.fr> +#+ +:+ +#+ */
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/* +#+#+#+#+#+ +#+ */
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/* Created: 2022/10/30 16:14:35 by apommier #+# #+# */
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/* Updated: 2022/11/29 17:27:54 by apommier ### ########.fr */
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/* */
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/* ************************************************************************** */
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#ifndef RANDOM_ACCESS_ITERATOR_HPP
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# define RANDOM_ACCESS_ITERATOR_HPP
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# include <cstddef>
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# include "./iterator_traits.hpp"
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namespace ft
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{
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template<typename T>
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class random_access_iterator
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{
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public:
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typedef T value_type;
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typedef std::ptrdiff_t difference_type;
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typedef T* pointer;
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typedef T& reference;
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typedef random_access_iterator iterator_category;
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private:
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pointer _ptr;
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public:
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//---------------------------------------
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//--------CONSTRUCTOR DESTRUCTOR---------
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//---------------------------------------
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random_access_iterator(){ _ptr = NULL;}
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random_access_iterator(pointer ptr){ _ptr = ptr;}
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random_access_iterator(const random_access_iterator &cpy) {*this = cpy;}
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~random_access_iterator(){}
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operator random_access_iterator<const value_type>() const
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{
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return (random_access_iterator<const value_type>(_ptr));
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}
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random_access_iterator &operator=(random_access_iterator const &rhs)
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{
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if (this != &rhs)
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{
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this->_ptr = rhs._ptr;
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}
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return (*this);
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}
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//---------------------------------------
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//-------------INCREMENTERS--------------
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//---------------------------------------
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random_access_iterator &operator ++()
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{
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_ptr++;
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return (*this);
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}
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random_access_iterator operator ++(int)
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{
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random_access_iterator tmp(*this);
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++(*this);
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return (tmp);
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}
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random_access_iterator &operator --()
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{
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_ptr--;
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return (*this);
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}
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random_access_iterator operator --(int)
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{
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random_access_iterator tmp(*this);
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--(*this);
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return (tmp);
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}
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//---------------------------------------
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//----------------ADRESS-----------------
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//---------------------------------------
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reference operator *() { return (*_ptr); }
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reference operator *() const { return (*_ptr); }
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pointer operator ->() { return (_ptr); }
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pointer operator ->() const { return (_ptr); }
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reference operator [](difference_type nbr) const { return (*(_ptr + nbr)); }
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//---------------------------------------
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//--------------OPERATION----------------
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//---------------------------------------
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// addition | soustraction
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random_access_iterator operator +(difference_type const nbr) const { return (random_access_iterator(_ptr + nbr)); } // a + n
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friend random_access_iterator operator +(int const lhs, random_access_iterator const& rhs) { return (rhs + lhs); } // n + a
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random_access_iterator operator -(difference_type nbr) const { return random_access_iterator(_ptr - nbr); } // a - n
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difference_type operator -(random_access_iterator const &rhs) const { return (_ptr - rhs._ptr) ; } // a - b
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random_access_iterator &operator +=(difference_type nbr)
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{
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_ptr += nbr;
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return (*this);
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}
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random_access_iterator &operator -=(difference_type nbr)
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{
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_ptr -= nbr;
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return (*this);
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}
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//---------------------------------
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//--------------GET----------------
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//---------------------------------
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pointer getPointer()
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{
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return (_ptr);
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}
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//---------------------------------------
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//-------------COMPARAISON---------------
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//---------------------------------------
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friend bool operator ==(random_access_iterator const& a, random_access_iterator const& b) { return (a._ptr == b._ptr); }
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friend bool operator !=(random_access_iterator const& a, random_access_iterator const& b) { return (a._ptr != b._ptr); }
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friend bool operator <(random_access_iterator const& a, random_access_iterator const& b) { return (a._ptr < b._ptr); }
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friend bool operator >(random_access_iterator const& a, random_access_iterator const& b) { return (a._ptr > b._ptr); }
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friend bool operator <=(random_access_iterator const& a, random_access_iterator const& b) { return (a._ptr <= b._ptr); }
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friend bool operator >=(random_access_iterator const& a, random_access_iterator const& b) { return (a._ptr >= b._ptr); }
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};
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}
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#endif |