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Diffstat (limited to 'include/estd/invoke.hpp')
| -rw-r--r-- | include/estd/invoke.hpp | 147 |
1 files changed, 0 insertions, 147 deletions
diff --git a/include/estd/invoke.hpp b/include/estd/invoke.hpp deleted file mode 100644 index bdac1a0..0000000 --- a/include/estd/invoke.hpp +++ /dev/null @@ -1,147 +0,0 @@ -/** - * \file - * \brief invoke() header - * - * \author Copyright (C) 2015 Kamil Szczygiel http://www.distortec.com http://www.freddiechopin.info - * - * \par License - * This Source Code Form is subject to the terms of the Mozilla Public License, v. 2.0. If a copy of the MPL was not - * distributed with this file, You can obtain one at http://mozilla.org/MPL/2.0/. - */ - -#ifndef ESTD_INVOKE_HPP_ -#define ESTD_INVOKE_HPP_ - -#include <utility> - -namespace estd -{ - -namespace internal -{ - -/** - * \brief Implementation of invoke() for function objects - * - * \tparam Function is the function object that will be executed - * \tparam Args are the arguments for \a Function - * - * \param [in] function is the function object that will be executed - * \param [in] args are arguments for \a function - * - * \return value returned by call to \a function with \a args - */ - -template<typename Function, typename... Args> -inline auto invoke(Function&& function, Args&&... args) -> - decltype(std::forward<Function>(function)(std::forward<Args>(args)...)) -{ - return std::forward<Function>(function)(std::forward<Args>(args)...); -} - -/** - * \brief Implementation of invoke() for member functions - * - * \tparam T is the type returned by call to member function - * \tparam Base is the type of base class - * \tparam Derived is the type of derived class - * \tparam Args are the arguments for member function - * - * \param [in] memberFunction is a pointer to member function of \a object that will be executed - * \param [in] object is an object or a reference to object on which \a memberFunction will be executed - * \param [in] args are arguments for \a memberFunction - * - * \return value returned by call to \a memberFunction on \a object with \a args - */ - -template<typename T, typename Base, typename Derived, typename... Args> -inline auto invoke(T Base::* memberFunction, Derived&& object, Args&&... args) -> - decltype((std::forward<Derived>(object).*memberFunction)(std::forward<Args>(args)...)) -{ - return (std::forward<Derived>(object).*memberFunction)(std::forward<Args>(args)...); -} - -/** - * \brief Implementation of invoke() for member functions - * - * \tparam MemberFunction is the type or pointer to member function - * \tparam Pointer is the type of pointer to object - * \tparam Args are the arguments for member function - * - * \param [in] memberFunction is a pointer to member function of object that will be executed - * \param [in] pointer is a pointer to object on which \a memberFunction will be executed - * \param [in] args are arguments for \a memberFunction - * - * \return value returned by call to \a memberFunction on \a (*pointer) with \a args - */ - -template<typename MemberFunction, typename Pointer, typename... Args> -inline auto invoke(MemberFunction memberFunction, Pointer&& pointer, Args&&... args) -> - decltype(((*std::forward<Pointer>(pointer)).*memberFunction)(std::forward<Args>(args)...)) -{ - return ((*std::forward<Pointer>(pointer)).*memberFunction)(std::forward<Args>(args)...); -} - -/** - * \brief Implementation of invoke() for data members - * - * \tparam T is the type of data member - * \tparam Base is the type of base class - * \tparam Derived is the type of derived class - * - * \param [in] dataMember is a pointer to data member of \a object that will be accessed - * \param [in] object is an object or a reference to object in which \a dataMember will be accessed - * - * \return value returned by access to \a dataMember in \a object - */ - -template<typename T, typename Base, typename Derived> -inline auto invoke(T Base::* dataMember, Derived&& object) -> decltype(std::forward<Derived>(object).*dataMember) -{ - return std::forward<Derived>(object).*dataMember; -} - -/** - * \brief Implementation of invoke() for data members - * - * \tparam DataMember is the type or pointer to data member - * \tparam Pointer is the type of pointer to object - * - * \param [in] dataMember is a pointer to data member of object that will be accessed - * \param [in] pointer is a pointer to object in which \a dataMember will be accessed - * - * \return value returned by access to \a dataMember in \a (*pointer) - */ - -template<typename DataMember, typename Pointer> -inline auto invoke(DataMember dataMember, Pointer&& pointer) -> decltype((*std::forward<Pointer>(pointer)).*dataMember) -{ - return (*std::forward<Pointer>(pointer)).*dataMember; -} - -} // namespace internal - -/** - * \brief Invokes callable object in an appropriate way. - * - * Implementation inspired by http://en.cppreference.com/w/cpp/utility/functional/invoke - * - * \tparam Function is the function object that will be executed - * \tparam Args are the arguments for \a Function - * - * \param [in] function is the function object that will be executed - * \param [in] args are arguments for \a function - * - * \return value returned by call to \a function with \a args - */ - -template<typename Function, typename... Args> -auto invoke(Function&& function, Args&&... args) -> - decltype(internal::invoke(std::forward<Function>(function), std::forward<Args>(args)...)) -{ - return internal::invoke(std::forward<Function>(function), std::forward<Args>(args)...); -} - -} // namespace estd - -#endif // ESTD_INVOKE_HPP_ |