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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 ELDBUS_CXX_ELDBUS_MESSAGE_ARGUMENTS_HH
#define ELDBUS_CXX_ELDBUS_MESSAGE_ARGUMENTS_HH
#include <Eldbus.h>
#include <tuple>
#include <iostream>
namespace efl { namespace eldbus { namespace _detail {
template <std::size_t I, typename Seq, typename Tuple>
bool _init_raw_tuple(Eldbus_Message_Iter*, Tuple const&, std::true_type)
{
return true;
}
template <std::size_t I, typename Seq, typename Tuple>
bool _init_raw_tuple(Eldbus_Message_Iter* iterator, Tuple const& tuple, std::false_type)
{
typedef signature_traits<typename std::tuple_element<I, Seq>::type> traits;
typedef typename traits::value_type element_type;
char* c = eldbus_message_iter_signature_get(iterator);
if(c[0] != signature_traits<element_type>::sig)
{
return false;
}
eldbus_message_iter_get_and_next(iterator, *c, &std::get<I>(tuple));
return _init_raw_tuple<I+1, Seq>
(iterator, tuple, std::integral_constant<bool, (I+1 == std::tuple_size<Tuple>::value)>());
}
template <std::size_t I, typename Tuple>
bool _append_tuple(Eldbus_Message*, Tuple const&, std::true_type)
{
return true;
}
template <std::size_t I, typename Tuple>
bool _append_tuple(Eldbus_Message* message, Tuple const& tuple, std::false_type)
{
typedef signature_traits<typename std::tuple_element<I, Tuple>::type> traits;
char signature[2] = {traits::sig, 0};
if(!eldbus_message_arguments_append(message, signature, traits::to_raw(std::get<I>(tuple))))
return false;
return _append_tuple<I+1>
(message, tuple, std::integral_constant<bool, (I+1 == std::tuple_size<Tuple>::value)>());
}
} } }
#endif