You can not select more than 25 topics Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
 
 
 
 
 
 

79 lines
2.1 KiB

/*
* 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.
*/
///
/// @file eo_concrete.hh
///
#ifndef EFL_CXX_EINA_COPY_TRAITS_HH
#define EFL_CXX_EINA_COPY_TRAITS_HH
namespace efl { namespace eina {
namespace _impl {
template<bool...> struct bool_pack;
template <bool...Args>
struct and_ : std::is_same<bool_pack<Args..., true>, bool_pack<true, Args...>> {};
}
template <typename... Args>
struct variant;
template <typename T, typename Enable = void>
struct copy_from_c_traits;
template <typename T>
struct copy_from_c_traits<T, typename std::enable_if<std::is_fundamental<T>::value>::type>
{
static void copy_to_unitialized(T* storage, void const* data)
{
std::memcpy(storage, data, sizeof(T));
}
};
template <typename...Args>
struct copy_from_c_traits<eina::variant<Args...>,
typename std::enable_if<_impl::and_<std::is_fundamental<Args>::value...>::value>::type>
{
template <typename T>
static void copy_to_unitialized(eina::variant<Args...>* storage, T const* data)
{
new (storage) eina::variant<Args...>{*data};
}
};
template <typename T, typename Enable = void>
struct alloc_to_c_traits;
template <typename T>
struct alloc_to_c_traits<T, typename std::enable_if<std::is_fundamental<T>::value>::type>
{
typedef T c_type;
static c_type* copy_alloc(T const& value)
{
c_type* v = static_cast<c_type*>(malloc(sizeof(c_type)));
std::memcpy(v, &value, sizeof(c_type));
return v;
}
static void free_alloc(void* data)
{
::free(data);
}
};
} }
#endif