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/************************************************************************
*
* Copyright (C) 2022-2023 IRCAD France
*
* This file is part of Sight.
*
* Sight is free software: you can redistribute it and/or modify it under
* the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* Sight is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with Sight. If not, see <https://www.gnu.org/licenses/>.
*
***********************************************************************/
#pragma once
#include <cstdint>
namespace sight::data
{
//------------------------------------------------------------------------------
enum class access : std::uint8_t
{
in = 0,
out = 1,
inout = 2
};
//------------------------------------------------------------------------------
// Traits that provides the const or not-const pointer depending on access
template<class DATATYPE, data::access access>
struct access_type_traits;
template<class DATATYPE>
struct access_type_traits<DATATYPE, data::access::in>
{
using value = CSPTR(DATATYPE);
using object = const DATATYPE;
static constexpr bool OPTIONAL_DEFAULT = false;
};
template<class DATATYPE>
struct access_type_traits<DATATYPE, data::access::inout>
{
using value = SPTR(DATATYPE);
using object = DATATYPE;
static constexpr bool OPTIONAL_DEFAULT = false;
};
template<class DATATYPE>
struct access_type_traits<DATATYPE, data::access::out>
{
using value = SPTR(DATATYPE);
using object = DATATYPE;
static constexpr bool OPTIONAL_DEFAULT = true;
};
template<data::access access>
struct assignable_traits;
template<>
struct assignable_traits<data::access::in>
{
static constexpr bool VALUE = false;
};
template<>
struct assignable_traits<data::access::inout>
{
static constexpr bool VALUE = false;
};
template<>
struct assignable_traits<data::access::out>
{
static constexpr bool VALUE = true;
};
template<data::access access>
using access_traits = access_type_traits<sight::data::object, access>;
} // namespace sight::data
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