2 This file is a part of libcds - Concurrent Data Structures library
4 (C) Copyright Maxim Khizhinsky (libcds.dev@gmail.com) 2006-2016
6 Source code repo: http://github.com/khizmax/libcds/
7 Download: http://sourceforge.net/projects/libcds/files/
9 Redistribution and use in source and binary forms, with or without
10 modification, are permitted provided that the following conditions are met:
12 * Redistributions of source code must retain the above copyright notice, this
13 list of conditions and the following disclaimer.
15 * Redistributions in binary form must reproduce the above copyright notice,
16 this list of conditions and the following disclaimer in the documentation
17 and/or other materials provided with the distribution.
19 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
20 AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21 IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
22 DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
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26 CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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31 #ifndef CDSLIB_DETAILS_BINARY_FUNCTOR_WRAPPER_H
32 #define CDSLIB_DETAILS_BINARY_FUNCTOR_WRAPPER_H
34 #include <cds/details/defs.h>
37 namespace cds { namespace details {
39 template <typename ReturnType, typename Functor, typename ArgType, typename Accessor>
40 struct binary_functor_wrapper {
41 typedef ReturnType return_type;
42 typedef Functor functor_type;
43 typedef ArgType argument_type;
44 typedef Accessor accessor;
46 return_type operator()( argument_type const& a1, argument_type const& a2 ) const
48 return functor_type()( accessor()( a1 ), accessor()( a2 ));
52 return_type operator()( argument_type const& a, Q const& q ) const
54 return functor_type()( accessor()(a), q );
58 return_type operator()( Q const& q, argument_type const& a ) const
60 return functor_type()( q, accessor()(a));
63 template <typename Q1, typename Q2>
64 return_type operator()( Q1 const& q1, Q2 const& q2 ) const
66 return functor_type()( q1, q2 );
70 struct trivial_accessor
73 T const& operator()( T const& p ) const
79 T& operator()( T& p ) const
85 template <typename ArgType, typename Predicate, typename Accessor>
86 using predicate_wrapper = binary_functor_wrapper< bool, Predicate, ArgType, Accessor>;
88 template <typename ArgType, typename Compare, typename Accessor>
89 using compare_wrapper = binary_functor_wrapper< int, Compare, ArgType, Accessor>;
91 }} // namespace cds::details
95 #endif // #ifndef CDSLIB_DETAILS_BINARY_FUNCTOR_WRAPPER_H