93 lines
2.7 KiB
C++
93 lines
2.7 KiB
C++
#ifndef selection_hh_INCLUDED
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#define selection_hh_INCLUDED
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#include "buffer.hh"
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namespace Kakoune
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{
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// A Selection holds a buffer range
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//
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// The Selection class manage a (first, last) buffer iterators pair.
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// Selections are oriented, first may be > last, and inclusive.
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// Selection updates it's iterators according to modifications made
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// in the buffer.
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struct Selection : public BufferChangeListener
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{
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Selection(const BufferIterator& first, const BufferIterator& last);
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Selection(const Selection& other);
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~Selection();
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Selection& operator=(const Selection& other);
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// returns min(first, last)
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BufferIterator begin() const;
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// returns max(first, last) + 1
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BufferIterator end() const;
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const BufferIterator& first() const { return m_first; }
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const BufferIterator& last() const { return m_last; }
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BufferIterator& first() { return m_first; }
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BufferIterator& last() { return m_last; }
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void merge_with(const Selection& selection);
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void avoid_eol();
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private:
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void on_insert(const BufferIterator& begin,
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const BufferIterator& end) override;
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void on_erase(const BufferIterator& begin,
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const BufferIterator& end) override;
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void check_invariant() const;
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BufferIterator m_first;
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BufferIterator m_last;
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void register_with_buffer();
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void unregister_with_buffer();
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};
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typedef std::vector<Selection> SelectionList;
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typedef std::vector<String> CaptureList;
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// Selections are often associated with a capture list
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// like when they are created from a regex match with
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// capture groups.
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struct SelectionAndCaptures
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{
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Selection selection;
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CaptureList captures;
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SelectionAndCaptures(const BufferIterator& first,
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const BufferIterator& last,
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CaptureList captures_list = {})
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: selection(first, last), captures(std::move(captures_list)) {}
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SelectionAndCaptures(const Selection& sel,
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CaptureList captures_list = {})
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: selection(sel), captures(std::move(captures_list)) {}
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// helper to access the selection
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BufferIterator begin() const { return selection.begin(); }
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BufferIterator end() const { return selection.end(); }
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const BufferIterator& first() const { return selection.first(); }
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const BufferIterator& last() const { return selection.last(); }
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};
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inline bool overlaps(const SelectionAndCaptures& lhs,
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const SelectionAndCaptures& rhs)
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{
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return (lhs.first() <= rhs.first() and lhs.last() >= rhs.first()) or
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(lhs.first() <= rhs.last() and lhs.last() >= rhs.last());
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}
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typedef std::vector<SelectionAndCaptures> SelectionAndCapturesList;
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}
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#endif // selection_hh_INCLUDED
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