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Qt Quick Ultralite Automotive Cluster Demo
///\file /****************************************************************************** The MIT License(MIT) Embedded Template Library. https://github.com/ETLCPP/etl https://www.etlcpp.com Copyright(c) 2018 jwellbelove Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files(the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and / or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions : The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software. THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. ******************************************************************************/ #ifndef ETL_STL_ALTERNATE_ITERATOR_INCLUDED #define ETL_STL_ALTERNATE_ITERATOR_INCLUDED #include "../../platform.h" #include <string.h> #include "../../type_traits.h" #if defined(ETL_IN_UNIT_TEST) #if !defined(ETLSTD) #define ETLSTD etlstd #endif namespace etlstd #else #if !defined(ETLSTD) #define ETLSTD std #endif namespace std #endif { //*************************************************************************** // iterator template <typename TCategory, typename T, typename TDistance = ptrdiff_t, typename TPointer = T* , typename TReference = T&> struct iterator { typedef T value_type; typedef TDistance difference_type; typedef TPointer pointer; typedef TReference reference; typedef TCategory iterator_category; }; //*************************************************************************** // iterator tags struct input_iterator_tag {}; struct output_iterator_tag {}; struct forward_iterator_tag : public input_iterator_tag {}; struct bidirectional_iterator_tag : public forward_iterator_tag {}; struct random_access_iterator_tag : public bidirectional_iterator_tag {}; //*************************************************************************** // iterator_traits template <typename TIterator> struct iterator_traits { typedef typename TIterator::difference_type difference_type; typedef typename TIterator::value_type value_type; typedef typename TIterator::pointer pointer; typedef typename TIterator::reference reference; typedef typename TIterator::iterator_category iterator_category; }; template <typename T> struct iterator_traits<T*> { typedef ptrdiff_t difference_type; typedef T value_type; typedef T* pointer; typedef T& reference; typedef random_access_iterator_tag iterator_category; }; template <typename T> struct iterator_traits<const T*> { typedef ptrdiff_t difference_type; typedef T value_type; typedef T* pointer; typedef T& reference; typedef random_access_iterator_tag iterator_category; }; //*************************************************************************** // advance template <typename TIterator, typename TDistance> void advance(TIterator& itr, TDistance n) { advance_helper(itr, n, typename ETLSTD::iterator_traits<TIterator>::iterator_category()); } template <typename TIterator, typename TDistance> void advance_helper(TIterator& itr, TDistance n, ETLSTD::input_iterator_tag) { while (n--) { ++itr; } } template <typename TIterator, typename TDistance> void advance_helper(TIterator& itr, TDistance n, ETLSTD::output_iterator_tag) { while (n--) { ++itr; } } template <typename TIterator, typename TDistance> void advance_helper(TIterator& itr, TDistance n, ETLSTD::forward_iterator_tag) { while (n--) { ++itr; } } template <typename TIterator, typename TDistance> void advance_helper(TIterator& itr, TDistance n, ETLSTD::bidirectional_iterator_tag) { if (n > 0) { while (n--) { ++itr; } } else { while (n++) { --itr; } } } template <typename TIterator, typename TDistance> void advance_helper(TIterator& itr, TDistance n, ETLSTD::random_access_iterator_tag) { itr += n; } //*************************************************************************** // distance template<typename TIterator> typename ETLSTD::iterator_traits<TIterator>::difference_type distance(TIterator first, TIterator last) { return distance_helper(first, last, typename ETLSTD::iterator_traits<TIterator>::iterator_category()); } template<typename TIterator> typename ETLSTD::iterator_traits<TIterator>::difference_type distance_helper(TIterator first, TIterator last, ETLSTD::input_iterator_tag) { typename ETLSTD::iterator_traits<TIterator>::difference_type d = 0; while (first != last) { ++d; ++first; } return d; } template<typename TIterator> typename ETLSTD::iterator_traits<TIterator>::difference_type distance_helper(TIterator first, TIterator last, ETLSTD::forward_iterator_tag) { typename ETLSTD::iterator_traits<TIterator>::difference_type d = 0; while (first != last) { ++d; ++first; } return d; } template<typename TIterator> typename ETLSTD::iterator_traits<TIterator>::difference_type distance_helper(TIterator first, TIterator last, ETLSTD::bidirectional_iterator_tag) { typename ETLSTD::iterator_traits<TIterator>::difference_type d = 0; while (first != last) { ++d; ++first; } return d; } template<typename TIterator> typename ETLSTD::iterator_traits<TIterator>::difference_type distance_helper(TIterator first, TIterator last, ETLSTD::random_access_iterator_tag) { return last - first; } //*************************************************************************** // reverse_iterator template <typename TIterator> struct reverse_iterator { public: typedef typename ETLSTD::iterator_traits<TIterator>::difference_type difference_type; typedef typename ETLSTD::iterator_traits<TIterator>::value_type value_type; typedef typename ETLSTD::iterator_traits<TIterator>::pointer pointer; typedef typename ETLSTD::iterator_traits<TIterator>::reference reference; typedef typename ETLSTD::iterator_traits<TIterator>::iterator_category iterator_category; reverse_iterator() { } explicit reverse_iterator(TIterator itr) : current(itr) { } reverse_iterator(const reverse_iterator<TIterator>& itr) : current(itr.current) { } template <typename UITerator> reverse_iterator(const reverse_iterator<UITerator>& itr) : current(itr.base()) { } reverse_iterator<TIterator>& operator = (const reverse_iterator<TIterator>& itr) { current = itr.base(); return *this; } template <typename UITerator> reverse_iterator<TIterator>& operator = (const reverse_iterator<UITerator>& itr) { current = itr.base(); return *this; } TIterator base() const { return current; } reference operator *() const { TIterator temp = current; --temp; return *temp; } pointer operator ->() const { TIterator temp = current; --temp; return &(*temp); } reverse_iterator<TIterator>& operator ++() { --current; return *this; } reverse_iterator<TIterator> operator ++(int) { reverse_iterator<TIterator> temp = *this; --current; return temp; } reverse_iterator<TIterator>& operator --() { ++current; return *this; } reverse_iterator<TIterator> operator --(int) { reverse_iterator<TIterator> temp = *this; ++current; return temp; } reverse_iterator<TIterator> operator +(difference_type n) const { return reverse_iterator<TIterator>(current - n); } reverse_iterator<TIterator>& operator +=(difference_type n) { current -= n; return *this; } reverse_iterator<TIterator> operator -(difference_type n) const { return reverse_iterator<TIterator>(current + n); } reverse_iterator<TIterator>& operator -=(difference_type n) { current += n; return *this; } reference operator [](difference_type n) const { return *(*this + n); } protected: TIterator current; }; template <class TIterator> inline bool operator <(const reverse_iterator<TIterator>& lhs, const reverse_iterator<TIterator>& rhs) { return rhs.base() < lhs.base(); } template <class TIterator> inline bool operator !=(const reverse_iterator<TIterator>& lhs, const reverse_iterator<TIterator>& rhs) { return !(lhs == rhs); } template <class TIterator> inline bool operator >(const reverse_iterator<TIterator>& lhs, const reverse_iterator<TIterator>& rhs) { return rhs < lhs; } template <class TIterator> inline bool operator <=(const reverse_iterator<TIterator>& lhs, const reverse_iterator<TIterator>& rhs) { return !(rhs < lhs); } template <class TIterator> inline bool operator >=(const reverse_iterator<TIterator>& lhs, const reverse_iterator<TIterator>& rhs) { return !(lhs < rhs); } template <class TIterator> inline typename reverse_iterator<TIterator>::difference_type operator -(const reverse_iterator<TIterator>& lhs, const reverse_iterator<TIterator>& rhs) { return rhs.base() - lhs.base(); } template <class TIterator, class TDifference> inline reverse_iterator<TIterator> operator +(TDifference n, const reverse_iterator<TIterator>& itr) { return itr.operator +(n); } } #endif