e7c3d04309
format all files Revert "format all files" This reverts commit 95d5812e49e7f916b68e786596f5a8eb5bcac414. Revert "format some files" This reverts commit ed3c8762d4d828b2b28e7b18809fc33f4f8ccaf5. format all files fix formatting in dir include fix formatting of debug macro
82 lines
2.7 KiB
C++
82 lines
2.7 KiB
C++
/*****************************************************************************
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*
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* This file is part of Mapnik (c++ mapping toolkit)
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*
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* Copyright (C) 2021 Artem Pavlenko
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*
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*****************************************************************************/
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#ifndef MAPNIK_FEATURE_KV_ITERATOR_HPP
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#define MAPNIK_FEATURE_KV_ITERATOR_HPP
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// mapnik
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#include <mapnik/config.hpp>
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#include <mapnik/value.hpp>
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#include <mapnik/util/variant.hpp>
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#include <mapnik/warning.hpp>
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MAPNIK_DISABLE_WARNING_PUSH
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#include <mapnik/warning_ignore.hpp>
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#include <boost/iterator/iterator_traits.hpp>
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#include <boost/iterator/iterator_facade.hpp>
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#include <boost/iterator/iterator_adaptor.hpp>
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#include <boost/iterator/filter_iterator.hpp>
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MAPNIK_DISABLE_WARNING_POP
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// stl
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#include <map>
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#include <tuple>
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namespace mapnik {
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class feature_impl;
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class MAPNIK_DECL feature_kv_iterator : public boost::iterator_facade<feature_kv_iterator,
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std::tuple<std::string, value> const,
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boost::forward_traversal_tag>
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{
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public:
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using value_type = std::tuple<std::string, value>;
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feature_kv_iterator(feature_impl const& f, bool begin = false);
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private:
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friend class boost::iterator_core_access;
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void increment();
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void decrement();
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void advance(boost::iterator_difference<feature_kv_iterator>::type);
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bool equal(feature_kv_iterator const& other) const;
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value_type const& dereference() const;
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feature_impl const& f_;
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std::map<std::string, std::size_t>::const_iterator itr_;
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mutable value_type kv_;
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};
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struct value_not_null
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{
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bool operator()(feature_kv_iterator::value_type const& kv) const
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{
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return !util::apply_visitor(mapnik::detail::is_null_visitor(), std::get<1>(kv));
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}
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};
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using feature_kv_iterator2 = boost::filter_iterator<value_not_null, feature_kv_iterator>;
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} // namespace mapnik
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#endif // MAPNIK_FEATURE_KV_ITERATOR_HPP
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