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56 lines
1.8 KiB
C++
56 lines
1.8 KiB
C++
// Copyright (c) 2006-2018 Maxim Khizhinsky
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//
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// Distributed under the Boost Software License, Version 1.0. (See accompanying
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// file LICENSE or copy at http://www.boost.org/LICENSE_1_0.txt)
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#ifndef CDSLIB_DETAILS_BINARY_FUNCTOR_WRAPPER_H
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#define CDSLIB_DETAILS_BINARY_FUNCTOR_WRAPPER_H
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#include <cds/details/defs.h>
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//@cond
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namespace cds { namespace details {
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template <typename ReturnType, typename Functor, typename ArgType, typename Accessor>
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struct binary_functor_wrapper {
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typedef ReturnType return_type;
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typedef Functor functor_type;
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typedef ArgType argument_type;
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typedef Accessor accessor;
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return_type operator()( argument_type const& a1, argument_type const& a2 ) const
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{
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return functor_type()( accessor()( a1 ), accessor()( a2 ));
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}
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template <typename Q>
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return_type operator()( argument_type const& a, Q const& q ) const
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{
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return functor_type()( accessor()(a), q );
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}
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template <typename Q>
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return_type operator()( Q const& q, argument_type const& a ) const
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{
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return functor_type()( q, accessor()(a));
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}
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template <typename Q1, typename Q2>
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return_type operator()( Q1 const& q1, Q2 const& q2 ) const
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{
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return functor_type()( q1, q2 );
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}
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};
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template <typename ArgType, typename Predicate, typename Accessor>
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using predicate_wrapper = binary_functor_wrapper< bool, Predicate, ArgType, Accessor>;
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template <typename ArgType, typename Compare, typename Accessor>
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using compare_wrapper = binary_functor_wrapper< int, Compare, ArgType, Accessor>;
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}} // namespace cds::details
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//@endcond
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#endif // #ifndef CDSLIB_DETAILS_BINARY_FUNCTOR_WRAPPER_H
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