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#pragma once
#include "local-coords.hpp"
#include <iterator>
#include <utility>
#include <type_traits>
namespace Magnum::Examples {
template<typename T> class basic_tile_iterator;
struct tile;
} // namespace Magnum::Examples
namespace std {
template<typename T>
void swap(Magnum::Examples::basic_tile_iterator<T>& lhs,
Magnum::Examples::basic_tile_iterator<T>& rhs) noexcept;
template<typename T> struct tuple_size<Magnum::Examples::basic_tile_iterator<T>> : std::integral_constant<std::size_t, 3> {};
template<typename T> struct tuple_element<0, Magnum::Examples::basic_tile_iterator<T>> { using type = T&; };
template<typename T> struct tuple_element<1, Magnum::Examples::basic_tile_iterator<T>> { using type = std::size_t; };
template<typename T> struct tuple_element<2, Magnum::Examples::basic_tile_iterator<T>> { using type = Magnum::Examples::local_coords; };
} // namespace std
namespace Magnum::Examples {
template<typename T>
class basic_tile_iterator final {
T* ptr;
std::size_t pos = 0;
public:
using value_type = std::tuple<T&, std::size_t, local_coords>;
explicit basic_tile_iterator(T* ptr, std::size_t pos) noexcept : ptr(ptr), pos(pos) {}
~basic_tile_iterator() noexcept = default;
basic_tile_iterator<T>& operator=(const basic_tile_iterator<T>&) = default;
basic_tile_iterator<T>& operator++() { pos++; return *this; }
basic_tile_iterator<T> operator++(int) { auto tmp = *this; operator++(); return tmp; }
basic_tile_iterator<T>* operator->() { return this; }
basic_tile_iterator<T>& operator*() { return *this; }
auto operator<=>(const basic_tile_iterator<T>&) const noexcept = default;
void swap(basic_tile_iterator<T>& other);
template<std::size_t N>
typename std::tuple_element<N, basic_tile_iterator<T>>::type get();
};
extern template class basic_tile_iterator<tile>;
extern template class basic_tile_iterator<const tile>;
extern template typename std::tuple_element<0, basic_tile_iterator<tile>>::type basic_tile_iterator<tile>::get<0>();
extern template typename std::tuple_element<1, basic_tile_iterator<tile>>::type basic_tile_iterator<tile>::get<1>();
extern template typename std::tuple_element<2, basic_tile_iterator<tile>>::type basic_tile_iterator<tile>::get<2>();
extern template typename std::tuple_element<0, basic_tile_iterator<const tile>>::type basic_tile_iterator<const tile>::get<0>();
extern template typename std::tuple_element<1, basic_tile_iterator<const tile>>::type basic_tile_iterator<const tile>::get<1>();
extern template typename std::tuple_element<2, basic_tile_iterator<const tile>>::type basic_tile_iterator<const tile>::get<2>();
} // namespace Magnum::Examples
namespace std {
template<typename Tile>
class iterator_traits<Magnum::Examples::basic_tile_iterator<Tile>> {
using T = Magnum::Examples::basic_tile_iterator<Tile>;
public:
using difference_type = std::ptrdiff_t;
using value_type = T;
using reference = T&;
using pointer = T*;
using iterator_category = std::input_iterator_tag; //usually std::forward_iterator_tag or similar
};
} // namespace std
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