recursive_node_iterator.hpp

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//
// (c) Copyright 2017 DESY,ESS
//
// This file is part of h5cpp.
//
// This library is free software; you can redistribute it and/or modify it
// under the terms of the GNU Lesser General Public License as published
// by the Free Software Foundation; either version 2.1 of the License, or
// (at your option) any later version.
//
// This library is distributed in the hope that it will be useful, but
// WITHOUT ANY WARRANTY; without even the implied warranty ofMERCHANTABILITY
// or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public
// License for more details.
//
// You should have received a copy of the GNU Lesser General Public License
// along with this library; if not, write to the
// Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor
// Boston, MA  02110-1301 USA
// ===========================================================================
//
// Author: Eugen Wintersberger <eugen.wintersberger@desy.de>
// Created on: Nov 17, 2017
//
#pragma once

#include <functional>
#include <h5cpp/node/group.hpp>
#include <h5cpp/node/node_iterator.hpp>
#include <h5cpp/core/windows.hpp>

namespace hdf5 {
namespace node {

class DLL_EXPORT RecursiveNodeIterator
{
  public:
    using value_type = Node;
    using pointer = value_type*;
    using reference = value_type&;
    using difference_type = ssize_t;
    using iterator_category = std::forward_iterator_tag;

    RecursiveNodeIterator() = delete;

    RecursiveNodeIterator(const RecursiveNodeIterator&) = default;

    static RecursiveNodeIterator begin(const Group &current_group);

    static RecursiveNodeIterator end(const Group &current_group);

    Node operator*() const;

    Node *operator->();

    RecursiveNodeIterator &operator++();

    RecursiveNodeIterator operator++(int);

    bool operator==(const RecursiveNodeIterator &rhs) const;

    bool operator!=(const RecursiveNodeIterator &rhs) const;

  private:
    RecursiveNodeIterator(const Group &current_group,
                          RecursiveNodeIterator parent_iterator);
    RecursiveNodeIterator(const Group &current_group);

    using IteratorPointer = std::shared_ptr<RecursiveNodeIterator>;

    Group           current_group_;

    NodeIterator    current_iterator_;

    IteratorPointer parent_iterator_;



};

} // namespace node
} // namespace hdf5