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
93 lines
2.5 KiB
C++
93 lines
2.5 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_SYMBOLIZER_HASH_HPP
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#define MAPNIK_SYMBOLIZER_HASH_HPP
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// mapnik
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#include <mapnik/symbolizer_base.hpp>
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#include <mapnik/util/variant.hpp>
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// stl
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#include <typeinfo>
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#include <typeindex>
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#include <functional>
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namespace mapnik {
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struct property_value_hash_visitor
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{
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std::size_t operator()(color const& val) const { return val.rgba(); }
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std::size_t operator()(font_feature_settings const&) const
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{
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return 0; // FIXME
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}
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std::size_t operator()(transform_type const&) const
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{
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return 0; // FIXME
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}
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std::size_t operator()(enumeration_wrapper const&) const
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{
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return 0; // FIXME
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}
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std::size_t operator()(dash_array const&) const
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{
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return 0; // FIXME
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}
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template<typename T>
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std::size_t operator()(T const& val) const
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{
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return std::hash<T>()(val);
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}
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};
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struct symbolizer_hash
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{
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template<typename T>
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static std::size_t value(T const& sym)
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{
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std::size_t seed = std::hash<std::type_index>()(typeid(sym));
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for (auto const& prop : sym.properties)
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{
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seed ^= std::hash<std::size_t>()(static_cast<std::size_t>(prop.first));
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seed ^= util::apply_visitor(property_value_hash_visitor(), prop.second);
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}
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return seed;
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}
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};
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struct symbolizer_hash_visitor
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{
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template<typename Symbolizer>
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std::size_t operator()(Symbolizer const& sym) const
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{
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return symbolizer_hash::value(sym);
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}
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};
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} // namespace mapnik
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#endif // MAPNIK_SYMBOLIZER_HASH_HPP
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