policy.h

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/************************************************************************************
*                                                                                   *
*   Copyright (c) 2014 Axel Menzel <info@axelmenzel.de>                             *
*                                                                                   *
*   This file is part of RTTR (Run Time Type Reflection)                            *
*   License: MIT License                                                            *
*                                                                                   *
*   Permission is hereby granted, free of charge, to any person obtaining           *
*   a copy of this software and associated documentation files (the "Software"),    *
*   to deal in the Software without restriction, including without limitation       *
*   the rights to use, copy, modify, merge, publish, distribute, sublicense,        *
*   and/or sell copies of the Software, and to permit persons to whom the           *
*   Software is furnished to do so, subject to the following conditions:            *
*                                                                                   *
*   The above copyright notice and this permission notice shall be included in      *
*   all copies or substantial portions of the Software.                             *
*                                                                                   *
*   THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR      *
*   IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,        *
*   FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE     *
*   AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER          *
*   LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,   *
*   OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE   *
*   SOFTWARE.                                                                       *
*                                                                                   *
*************************************************************************************/

#ifndef __RTTR_POLICY_H__
#define __RTTR_POLICY_H__

#include "rttr/base/core_prerequisites.h"

namespace rttr
{

namespace detail
{

struct return_as_ptr
{};

struct set_as_ptr
{};

struct return_as_copy
{};

struct read_only
{};

struct set_value
{};

struct discard_return
{};

struct default_invoke
{};


// default getter policy
template<typename T>
struct get_getter_policy
{
    typedef return_as_copy type; 
};

// default setter policy
template<typename T>
struct get_setter_policy
{
    typedef set_value type; 
};


struct bind_property_as_ptr_policy
{};

struct return_reference_as_ptr_policy
{};

struct discard_return_value_policy
{};


template<typename... T>
struct policy_list_impl {};

using policy_list = policy_list_impl<bind_property_as_ptr_policy, 
                                     return_reference_as_ptr_policy, 
                                     discard_return_value_policy>;


template<>
struct get_getter_policy<bind_property_as_ptr_policy>
{
    typedef return_as_ptr type;
};

template<>
struct get_setter_policy<bind_property_as_ptr_policy>
{
    typedef set_as_ptr type;
};


// default method policy
template<typename T>
struct get_method_policy
{
    typedef default_invoke type; 
};



template<>
struct get_method_policy<return_reference_as_ptr_policy>
{
    typedef return_as_ptr type;
};


template<>
struct get_method_policy<discard_return_value_policy>
{
    typedef discard_return type;
};


RTTR_API extern return_as_copy default_property_policy;

} // end namespace detail;

RTTR_API extern detail::bind_property_as_ptr_policy      bind_property_as_ptr;

RTTR_API extern detail::return_reference_as_ptr_policy   return_reference_as_ptr;

RTTR_API extern detail::discard_return_value_policy      discard_return_value;


} // end namespace rttr

#endif // __RTTR_POLICY_H__