25 Ranges library [ranges]

25.7 Range adaptors [range.adaptors]

25.7.17 Split view [range.split]

25.7.17.3 Class split_view​::​iterator [range.split.iterator]

namespace std::ranges { template<forward_range V, forward_range Pattern> requires view<V> && view<Pattern> && indirectly_comparable<iterator_t<V>, iterator_t<Pattern>, ranges::equal_to> class split_view<V, Pattern>::iterator { private: split_view* parent_ = nullptr; // exposition only iterator_t<V> cur_ = iterator_t<V>(); // exposition only subrange<iterator_t<V>> next_ = subrange<iterator_t<V>>(); // exposition only bool trailing_empty_ = false; // exposition only public: using iterator_concept = forward_iterator_tag; using iterator_category = input_iterator_tag; using value_type = subrange<iterator_t<V>>; using difference_type = range_difference_t<V>; iterator() = default; constexpr iterator(split_view& parent, iterator_t<V> current, subrange<iterator_t<V>> next); constexpr iterator_t<V> base() const; constexpr value_type operator*() const; constexpr iterator& operator++(); constexpr iterator operator++(int); friend constexpr bool operator==(const iterator& x, const iterator& y); }; }
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constexpr iterator(split_view& parent, iterator_t<V> current, subrange<iterator_t<V>> next);
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Effects: Initializes parent_ with addressof(parent), cur_ with std​::​move(current), and next_ with std​::​move(next).
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constexpr iterator_t<V> base() const;
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Effects: Equivalent to: return cur_;
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constexpr value_type operator*() const;
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Effects: Equivalent to: return {cur_, next_.begin()};
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constexpr iterator& operator++();
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Effects: Equivalent to: cur_ = next_.begin(); if (cur_ != ranges::end(parent_->base_)) { cur_ = next_.end(); if (cur_ == ranges::end(parent_->base_)) { trailing_empty_ = true; next_ = {cur_, cur_}; } else { next_ = parent_->find-next(cur_); } } else { trailing_empty_ = false; } return *this;
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constexpr iterator operator++(int);
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Effects: Equivalent to: auto tmp = *this; ++*this; return tmp;
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friend constexpr bool operator==(const iterator& x, const iterator& y);
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Effects: Equivalent to: return x.cur_ == y.cur_ && x.trailing_empty_ == y.trailing_empty_;