42 lines
1.3 KiB
C++
42 lines
1.3 KiB
C++
// Copyright 2008 Christophe Henry
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// henry UNDERSCORE christophe AT hotmail DOT com
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// This is an extended version of the state machine available in the boost::mpl library
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// Distributed under the same license as the original.
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// Copyright for the original version:
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// Copyright 2005 David Abrahams and Aleksey Gurtovoy. Distributed
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// under the Boost Software License, Version 1.0. (See accompanying
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// 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_MSM_BACK_BIND_HELPERS_H
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#define BOOST_MSM_BACK_BIND_HELPERS_H
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#include <functional>
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namespace boost { namespace msm { namespace back
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{
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// helper to replace std::plus as the lack of implicit conversion makes it not usable in one of our bind
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template<class _Ty,class _Tz>
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struct plus2
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: public std::binary_function<_Ty, _Tz, _Ty>
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{
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// functor for operator+
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_Ty operator()( _Ty _Left, _Tz _Right) const
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{
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// apply operator+ to operands
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return (_Left + _Right);
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}
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};
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// helper to dereference a pointer to a function pointer
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template <class T>
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struct deref
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{
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typedef T& result_type;
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T& operator()(T* f) const
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{
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return *f;
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}
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};
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} } }//boost::msm::back
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#endif //BOOST_MSM_BACK_BIND_HELPERS_H
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