84 lines
1.7 KiB
C++
84 lines
1.7 KiB
C++
// Boost.Geometry
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// Copyright (c) 2018, Oracle and/or its affiliates.
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// Contributed and/or modified by Adam Wulkiewicz, on behalf of Oracle
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// Use, modification and distribution is subject to the Boost Software License,
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// Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
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// http://www.boost.org/LICENSE_1_0.txt)
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#ifndef BOOST_GEOMETRY_PROJECTIONS_FACTORY_KEY_HPP
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#define BOOST_GEOMETRY_PROJECTIONS_FACTORY_KEY_HPP
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#include <string>
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#include <boost/geometry/srs/projections/dpar.hpp>
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#include <boost/geometry/srs/projections/proj4.hpp>
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namespace boost { namespace geometry { namespace projections
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{
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namespace detail
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{
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template <typename Params>
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struct factory_key_util
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{
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BOOST_MPL_ASSERT_MSG((false), INVALID_PARAMETERS_TYPE, (Params));
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};
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template <>
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struct factory_key_util<srs::detail::proj4_parameters>
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{
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typedef std::string type;
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template <typename ProjParams>
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static type const& get(ProjParams const& par)
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{
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return par.id.name;
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}
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};
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template <typename T>
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struct factory_key_util<srs::dpar::parameters<T> >
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{
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typedef srs::dpar::value_proj type;
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template <typename ProjParams>
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static type const& get(ProjParams const& par)
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{
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return par.id.id;
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}
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};
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struct factory_key
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{
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factory_key(const char* name, srs::dpar::value_proj id)
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: m_name(name), m_id(id)
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{}
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operator const char*() const
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{
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return m_name;
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}
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operator std::string() const
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{
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return std::string(m_name);
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}
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operator srs::dpar::value_proj() const
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{
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return m_id;
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}
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private:
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const char* m_name;
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srs::dpar::value_proj m_id;
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};
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} // namespace detail
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}}} // namespace boost::geometry::projections
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#endif // BOOST_GEOMETRY_PROJECTIONS_FACTORY_KEY_HPP
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