cppmp/include/cppmp/misc/getter.h

#pragma once

#include <cppmp/config.h>

#include "generic_predicate.h"

namespace cppmp
{

    /* tags */

    struct tag_getter { };
    struct tag_getter_member_var { };
    struct tag_getter_member_func { };
    struct tag_getter_lambda { };
    struct tag_getter_chain { };

    namespace __impl
    {

        /* getter_builder */

        template<typename X, typename = void>
        struct getter_builder;

    }

    /**
     * @brief Evaluates to true_t if the passed type is an getter, to false_t otherwise.
     */
    template<typename T>
    struct is_getter;

    #ifdef cppmp_supports_variable_templates
    /**
     * @brief Is true if the passed type is an getter, false otherwise.
     */
    template<typename T>
    constexpr decltype(auto) is_getter_v = is_getter<T>::value;
    #endif

    /**
     * @brief Predicate to create new getter objects.
     */
    constexpr decltype(auto) make_getter = generic_predicate<__impl::getter_builder> { };

}

#include "getter.inl"