// Copyright 2019 Hans Dembinski
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//
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// Distributed under the Boost Software License, Version 1.0.
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// (See accompanying file LICENSE_1_0.txt
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// or copy at http://www.boost.org/LICENSE_1_0.txt)
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#ifndef BOOST_HISTOGRAM_DETAIL_REPLACE_TYPE_HPP
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#define BOOST_HISTOGRAM_DETAIL_REPLACE_TYPE_HPP
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#include <boost/core/use_default.hpp>
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#include <string>
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#include <type_traits>
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namespace boost {
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namespace histogram {
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namespace detail {
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template <class T, class From, class To>
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using replace_type = std::conditional_t<std::is_same<T, From>::value, To, T>;
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template <class T, class Default>
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using replace_default = replace_type<T, boost::use_default, Default>;
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template <class T>
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using replace_cstring = replace_type<T, const char*, std::string>;
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} // namespace detail
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} // namespace histogram
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} // namespace boost
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#endif
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