boost/bind/make_adaptable.hpp
#ifndef BOOST_BIND_MAKE_ADAPTABLE_HPP_INCLUDED
#define BOOST_BIND_MAKE_ADAPTABLE_HPP_INCLUDED
//
// make_adaptable.hpp
//
// Copyright (c) 2002 Peter Dimov and Multi Media Ltd.
//
// Permission to copy, use, modify, sell and distribute this software
// is granted provided this copyright notice appears in all copies.
// This software is provided "as is" without express or implied
// warranty, and with no claim as to its suitability for any purpose.
//
namespace boost
{
namespace _bi
{
template<class F> void instantiate(F)
{
}
template<class R, class F> class af0
{
public:
typedef R result_type;
explicit af0(F f): f_(f)
{
}
result_type operator()()
{
return f_();
}
private:
F f_;
};
template<class R, class A1, class F> class af1
{
public:
typedef R result_type;
typedef A1 argument_type;
typedef A1 arg1_type;
explicit af1(F f): f_(f)
{
}
result_type operator()(A1 a1)
{
return f_(a1);
}
private:
F f_;
};
template<class R, class A1, class A2, class F> class af2
{
public:
typedef R result_type;
typedef A1 first_argument_type;
typedef A2 second_argument_type;
typedef A1 arg1_type;
typedef A2 arg2_type;
explicit af2(F f): f_(f)
{
}
result_type operator()(A1 a1, A2 a2)
{
return f_(a1, a2);
}
private:
F f_;
};
template<class R, class A1, class A2, class A3, class F> class af3
{
public:
typedef R result_type;
typedef A1 arg1_type;
typedef A2 arg2_type;
typedef A3 arg3_type;
explicit af3(F f): f_(f)
{
}
result_type operator()(A1 a1, A2 a2, A3 a3)
{
return f_(a1, a2, a3);
}
private:
F f_;
};
template<class R, class A1, class A2, class A3, class A4, class F> class af4
{
public:
typedef R result_type;
typedef A1 arg1_type;
typedef A2 arg2_type;
typedef A3 arg3_type;
typedef A4 arg4_type;
explicit af4(F f): f_(f)
{
}
result_type operator()(A1 a1, A2 a2, A3 a3, A4 a4)
{
return f_(a1, a2, a3, a4);
}
private:
F f_;
};
} // namespace _bi
template<class R, class F> _bi::af0<R, F> make_adaptable(F f)
{
_bi::instantiate( &_bi::af0<R, F>::operator() ); // for early error detection
return _bi::af0<R, F>(f);
}
template<class R, class A1, class F> _bi::af1<R, A1, F> make_adaptable(F f)
{
instantiate( &_bi::af1<R, A1, F>::operator() );
return _bi::af1<R, A1, F>(f);
}
template<class R, class A1, class A2, class F> _bi::af2<R, A1, A2, F> make_adaptable(F f)
{
instantiate( &_bi::af2<R, A1, A2, F>::operator() );
return _bi::af2<R, A1, A2, F>(f);
}
template<class R, class A1, class A2, class A3, class F> _bi::af3<R, A1, A2, A3, F> make_adaptable(F f)
{
instantiate( &_bi::af3<R, A1, A2, A3, F>::operator() );
return _bi::af3<R, A1, A2, A3, F>(f);
}
template<class R, class A1, class A2, class A3, class A4, class F> _bi::af4<R, A1, A2, A3, A4, F> make_adaptable(F f)
{
instantiate( &_bi::af4<R, A1, A2, A3, A4, F>::operator() );
return _bi::af4<R, A1, A2, A3, A4, F>(f);
}
} // namespace boost
#endif // #ifndef BOOST_BIND_MAKE_ADAPTABLE_HPP_INCLUDED
