cppdraft_translate/cppdraft/range/split/iterator.md

[range.split.iterator]

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]

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namespace std::ranges {template<forward_range V, forward_range Pattern>requires view && view &&indirectly_comparable<iterator_t, iterator_t, ranges::equal_to>class split_view<V, Pattern>::iterator {private: split_view* parent_ = nullptr; // exposition only iterator_t cur_ = iterator_t(); // exposition only subrange<iterator_t> next_ = subrange<iterator_t>(); // exposition onlybool trailing_empty_ = false; // exposition onlypublic:using iterator_concept = forward_iterator_tag; using iterator_category = input_iterator_tag; using value_type = subrange<iterator_t>; using difference_type = range_difference_t; iterator() = default; constexpr iterator(split_view& parent, iterator_t current, subrange<iterator_t> next); constexpr iterator_t 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), andnext_ 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_;