65 lines
2.5 KiB
C++
65 lines
2.5 KiB
C++
/*
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* Copyright 2019 by its authors. See AUTHORS.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef EFL_EET_COMPOSITE_HH_
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#define EFL_EET_COMPOSITE_HH_
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namespace efl { namespace eet {
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template <typename, typename...> struct descriptor;
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namespace _detail {
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struct member_desc_info
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{
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const char* name;
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std::size_t offset;
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};
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template <std::size_t E, typename U, typename... Types>
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void descriptor_register_composite_member( ::Eet_Data_Descriptor*, int
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, eet::descriptor<U, Types...>const*
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, std::integral_constant<std::size_t, E>)
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{
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}
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template <std::size_t E, typename U, typename... Types, std::size_t I>
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void descriptor_register_composite_member( ::Eet_Data_Descriptor* cls, int offset_base
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, eet::descriptor<U, Types...>const* descriptor
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, std::integral_constant<std::size_t, I>
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, typename std::enable_if<E != I>::type* = 0)
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{
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typedef typename std::tuple_element<I, std::tuple<Types...> >::type member_type;
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eet_data_descriptor_element_add(cls, descriptor->get_member_info()[I].name
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, _eet_type<member_type>::value, EET_G_UNKNOWN
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, offset_base + descriptor->get_member_info()[I].offset
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, 0, nullptr, nullptr);
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_detail::descriptor_register_composite_member<E>
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(cls, offset_base, descriptor, std::integral_constant<std::size_t, I+1>());
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}
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template <typename U, typename...Types>
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void descriptor_type_register_composite( ::Eet_Data_Descriptor* cls, member_desc_info info
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, eet::descriptor<U, Types...>const* descriptor)
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{
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_detail::descriptor_register_composite_member<eet::descriptor<U, Types...>::members::value>
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(cls, info.offset, descriptor, std::integral_constant<std::size_t, 0u>());
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}
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} } }
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#endif
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