108 lines
2.8 KiB
C++
108 lines
2.8 KiB
C++
// This file is distributed under the BSD License.
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// See "license.txt" for details.
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// Copyright 2009-2012, Jonathan Turner (jonathan@emptycrate.com)
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// Copyright 2009-2016, Jason Turner (jason@emptycrate.com)
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// http://www.chaiscript.com
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#ifndef CHAISCRIPT_CALLABLE_TRAITS_HPP_
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#define CHAISCRIPT_CALLABLE_TRAITS_HPP_
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#include <memory>
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namespace chaiscript {
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namespace dispatch {
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namespace detail {
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template<typename Class, typename ... Param>
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struct Constructor
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{
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template<typename ... Inner>
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std::shared_ptr<Class> operator()(Inner&& ... inner) const {
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return std::make_shared<Class>(std::forward<Inner>(inner)...);
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}
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};
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template<typename Ret, typename Class, typename ... Param>
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struct Const_Caller
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{
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explicit Const_Caller(Ret (Class::*t_func)(Param...) const) : m_func(t_func) {}
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template<typename ... Inner>
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Ret operator()(const Class &o, Inner&& ... inner) const {
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return (o.*m_func)(std::forward<Inner>(inner)...);
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}
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Ret (Class::*m_func)(Param...) const;
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};
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template<typename Ret, typename ... Param>
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struct Fun_Caller
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{
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explicit Fun_Caller(Ret( * t_func)(Param...) ) : m_func(t_func) {}
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template<typename ... Inner>
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Ret operator()(Inner&& ... inner) const {
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return (m_func)(std::forward<Inner>(inner)...);
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}
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Ret(*m_func)(Param...);
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};
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template<typename Ret, typename Class, typename ... Param>
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struct Caller
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{
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explicit Caller(Ret (Class::*t_func)(Param...)) : m_func(t_func) {}
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template<typename ... Inner>
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Ret operator()(Class &o, Inner&& ... inner) const {
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return (o.*m_func)(std::forward<Inner>(inner)...);
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}
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Ret (Class::*m_func)(Param...);
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};
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template<typename T>
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struct Arity
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{
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};
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template<typename Ret, typename ... Params>
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struct Arity<Ret (Params...)>
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{
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static const size_t arity = sizeof...(Params);
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};
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template<typename T>
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struct Function_Signature
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{
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};
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template<typename Ret, typename ... Params>
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struct Function_Signature<Ret (Params...)>
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{
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typedef Ret Return_Type;
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typedef Ret (Signature)(Params...);
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};
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template<typename Ret, typename T, typename ... Params>
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struct Function_Signature<Ret (T::*)(Params...) const>
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{
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typedef Ret Return_Type;
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typedef Ret (Signature)(Params...);
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};
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template<typename T>
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struct Callable_Traits
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{
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typedef typename Function_Signature<decltype(&T::operator())>::Signature Signature;
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typedef typename Function_Signature<decltype(&T::operator())>::Return_Type Return_Type;
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};
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}
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}
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}
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#endif
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