// -*- C++ -*-
+/**
+ * \file math_iterator.h
+ * This file is part of LyX, the document processor.
+ * Licence details can be found in the file COPYING.
+ *
+ * \author André Pönitz
+ *
+ * Full author contact details are available in file CREDITS.
+ */
+
#ifndef MATH_ITERATOR_H
#define MATH_ITERATOR_H
-#include "math_cursor.h"
+#include "math_pos.h"
+
+#include <vector>
+
-// this helper struct is used for traversing math insets
+// this is used for traversing math insets
-class MathIterator {
+class MathIterator : private std::vector<CursorPos> {
public:
- /// default constructor, used for end of range
- //MathIterator();
+ // re-use inherited stuff
+ typedef std::vector<CursorPos> base_type;
+ using base_type::clear;
+ using base_type::size;
+ using base_type::push_back;
+ using base_type::pop_back;
+ using base_type::back;
+ using base_type::begin;
+ using base_type::end;
+ using base_type::erase;
+ using base_type::operator[];
+ using base_type::size_type;
+ using base_type::difference_type;
+ using base_type::const_iterator;
+ friend bool operator!=(MathIterator const &, MathIterator const &);
+ friend bool operator==(MathIterator const &, MathIterator const &);
+
+ /// default constructor
+ MathIterator();
/// start with given inset
explicit MathIterator(MathInset * p);
- /// start with given position
- //explicit MathIterator(MathCursor::cursor_type const & cursor);
///
- MathCursorPos const & operator*() const;
+ CursorPos const & operator*() const;
///
- MathCursorPos const & operator->() const;
+ CursorPos const & operator->() const;
/// move on one step
void operator++();
/// move on several steps
- void jump(MathInset::difference_type);
- /// read access to top most item (inline after running gprof!)
- MathCursorPos const & position() const { return cursor_.back(); }
- /// write access to top most item
- MathCursorPos & position() { return cursor_.back(); }
- /// read access to full path
- MathCursor::cursor_type const & cursor() const;
+ void jump(difference_type);
/// read access to top most inset
- MathInset const * par() const;
+ MathInset const * inset() const;
/// read access to top most inset
- MathInset * par();
+ MathInset * inset();
/// helper for iend
void goEnd();
/// read access to top most item
MathArray const & cell() const;
+ /// is this a non-end position
+ bool normal() const;
+ /// shrinks to at most i levels
+ void shrink(size_type i);
-private:
+private:
/// own level down
void push(MathInset *);
/// own level up
void pop();
-
- /// current position
- MathCursor::cursor_type cursor_;
};
///