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author | Daniel Friesel <daniel.friesel@uos.de> | 2020-09-07 12:57:04 +0200 |
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committer | Daniel Friesel <daniel.friesel@uos.de> | 2020-09-07 12:57:04 +0200 |
commit | 0558244645611f314f47e0fa427f7323ce253eaf (patch) | |
tree | 824bcd55ec8577703345106d0a08e167407500a7 /include/lib/modernjson/detail/iterators/json_reverse_iterator.hpp | |
parent | 0248c6352f2117e50fac71dd632a79d8fa4f8737 (diff) |
remove external libraries from main branch
Diffstat (limited to 'include/lib/modernjson/detail/iterators/json_reverse_iterator.hpp')
-rw-r--r-- | include/lib/modernjson/detail/iterators/json_reverse_iterator.hpp | 119 |
1 files changed, 0 insertions, 119 deletions
diff --git a/include/lib/modernjson/detail/iterators/json_reverse_iterator.hpp b/include/lib/modernjson/detail/iterators/json_reverse_iterator.hpp deleted file mode 100644 index f3b5b5d..0000000 --- a/include/lib/modernjson/detail/iterators/json_reverse_iterator.hpp +++ /dev/null @@ -1,119 +0,0 @@ -#pragma once - -#include <cstddef> // ptrdiff_t -#include <iterator> // reverse_iterator -#include <utility> // declval - -namespace nlohmann -{ -namespace detail -{ -////////////////////// -// reverse_iterator // -////////////////////// - -/*! -@brief a template for a reverse iterator class - -@tparam Base the base iterator type to reverse. Valid types are @ref -iterator (to create @ref reverse_iterator) and @ref const_iterator (to -create @ref const_reverse_iterator). - -@requirement The class satisfies the following concept requirements: -- -[BidirectionalIterator](https://en.cppreference.com/w/cpp/named_req/BidirectionalIterator): - The iterator that can be moved can be moved in both directions (i.e. - incremented and decremented). -- [OutputIterator](https://en.cppreference.com/w/cpp/named_req/OutputIterator): - It is possible to write to the pointed-to element (only if @a Base is - @ref iterator). - -@since version 1.0.0 -*/ -template<typename Base> -class json_reverse_iterator : public std::reverse_iterator<Base> -{ - public: - using difference_type = std::ptrdiff_t; - /// shortcut to the reverse iterator adapter - using base_iterator = std::reverse_iterator<Base>; - /// the reference type for the pointed-to element - using reference = typename Base::reference; - - /// create reverse iterator from iterator - explicit json_reverse_iterator(const typename base_iterator::iterator_type& it) noexcept - : base_iterator(it) {} - - /// create reverse iterator from base class - explicit json_reverse_iterator(const base_iterator& it) noexcept : base_iterator(it) {} - - /// post-increment (it++) - json_reverse_iterator const operator++(int) - { - return static_cast<json_reverse_iterator>(base_iterator::operator++(1)); - } - - /// pre-increment (++it) - json_reverse_iterator& operator++() - { - return static_cast<json_reverse_iterator&>(base_iterator::operator++()); - } - - /// post-decrement (it--) - json_reverse_iterator const operator--(int) - { - return static_cast<json_reverse_iterator>(base_iterator::operator--(1)); - } - - /// pre-decrement (--it) - json_reverse_iterator& operator--() - { - return static_cast<json_reverse_iterator&>(base_iterator::operator--()); - } - - /// add to iterator - json_reverse_iterator& operator+=(difference_type i) - { - return static_cast<json_reverse_iterator&>(base_iterator::operator+=(i)); - } - - /// add to iterator - json_reverse_iterator operator+(difference_type i) const - { - return static_cast<json_reverse_iterator>(base_iterator::operator+(i)); - } - - /// subtract from iterator - json_reverse_iterator operator-(difference_type i) const - { - return static_cast<json_reverse_iterator>(base_iterator::operator-(i)); - } - - /// return difference - difference_type operator-(const json_reverse_iterator& other) const - { - return base_iterator(*this) - base_iterator(other); - } - - /// access to successor - reference operator[](difference_type n) const - { - return *(this->operator+(n)); - } - - /// return the key of an object iterator - auto key() const -> decltype(std::declval<Base>().key()) - { - auto it = --this->base(); - return it.key(); - } - - /// return the value of an iterator - reference value() const - { - auto it = --this->base(); - return it.operator * (); - } -}; -} // namespace detail -} // namespace nlohmann |