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/*
* Copyright 2019 by its authors. See AUTHORS.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef _EINA_TYPE_TRAITS_HH
#define _EINA_TYPE_TRAITS_HH
#include <type_traits>
#include <string>
#include <vector>
/**
* @addtogroup Eina_Cxx_Data_Types_Group
*
* @{
*/
namespace efl { namespace eina {
/**
* @internal
*
* @{
*/
using std::enable_if;
using std::is_integral;
using std::is_pod;
using std::is_const;
using std::remove_cv;
using std::true_type;
using std::false_type;
using std::remove_pointer;
using std::remove_reference;
template <typename T>
struct indirect_is_contiguous_iterator : false_type
{};
template <>
struct indirect_is_contiguous_iterator<std::vector<char>::iterator> : std::true_type
{};
template <>
struct indirect_is_contiguous_iterator<std::vector<char>::const_iterator> : std::true_type
{};
template <typename T, typename Enable = void>
struct is_contiguous_iterator : indirect_is_contiguous_iterator<T> {};
template <>
struct is_contiguous_iterator<std::string::const_iterator> : true_type {};
template <>
struct is_contiguous_iterator<std::string::iterator> : true_type {};
template <bool, typename T, typename F>
struct if_c
{
typedef T type;
};
template <typename T, typename F>
struct if_c<false, T, F>
{
typedef F type;
};
template <typename U, typename T, typename F>
struct if_ : if_c<U::value, T, F>
{
};
template <typename T>
struct container_value_type
{
typedef typename std::conditional<
std::is_void<T>::value
, std::add_pointer<T>, std::remove_reference<T>>::type::type type;
};
template <typename T>
struct nonconst_container_value_type
{
typedef typename std::conditional<
std::is_void<T>::value
, std::add_pointer<T>, std::remove_cv<typename std::remove_reference<T>::type>>::type::type type;
};
/**
* @}
*/
} }
/**
* @}
*/
#endif