ecency-mobile/ios/Pods/boost-for-react-native/boost/msm/back/bind_helpers.hpp

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// Copyright 2008 Christophe Henry
// henry UNDERSCORE christophe AT hotmail DOT com
// This is an extended version of the state machine available in the boost::mpl library
// Distributed under the same license as the original.
// Copyright for the original version:
// Copyright 2005 David Abrahams and Aleksey Gurtovoy. Distributed
// under the Boost Software License, Version 1.0. (See accompanying
// file LICENSE_1_0.txt or copy at
// http://www.boost.org/LICENSE_1_0.txt)
#ifndef BOOST_MSM_BACK_BIND_HELPERS_H
#define BOOST_MSM_BACK_BIND_HELPERS_H
#include <functional>
namespace boost { namespace msm { namespace back
{
// helper to replace std::plus as the lack of implicit conversion makes it not usable in one of our bind
template<class _Ty,class _Tz>
struct plus2
: public std::binary_function<_Ty, _Tz, _Ty>
{
// functor for operator+
_Ty operator()( _Ty _Left, _Tz _Right) const
{
// apply operator+ to operands
return (_Left + _Right);
}
};
// helper to dereference a pointer to a function pointer
template <class T>
struct deref
{
typedef T& result_type;
T& operator()(T* f) const
{
return *f;
}
};
} } }//boost::msm::back
#endif //BOOST_MSM_BACK_BIND_HELPERS_H