2019-10-24 06:36:42 -07:00
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/*
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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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eldbus-cxx: Implementation of eldbus C++ API
Summary:
Applications can:
void method_callback(void* data, const Eldbus_Service_Interface* iface,
const Eldbus_Message* message);
struct { ... } data_struct;
Eldbus_Method methods[] =
{
"method1", ELDBUS_ARGS("b", "bool"), ELDBUS_ARGS("b", "bool"), ELDBUS_METHOD_FLAG_HAS_DATA
, (Eldbus_Method_Cb)&method_callback, &data_struct
};
And method_callback will be called with data parameter pointing to data_struct global object.
Also, Eldbus-cxx supports registering an interface passing a lambda or
function object as method. For example:
edb::service_interface iface = edb::service_interface_register
(c, path, interface
, es::method("SendStringAndBool"
, [expected_string, expected_bool] (std::string const& n, bool b
, bool* out)
{
std::cout << "Running SendStringAndBool" << std::endl;
ck_assert(n == expected_string);
ck_assert(b == expected_bool);
*out = b;
return n;
}
, es::ins<std::string, bool>("string", "bool")
, es::outs<std::string, bool>("string", "bool")
)
);
When a request for "SendStringAndBool" with the proper signature is
called, executes the lambda and replies with the return value and
its bool* out parameter value.
Reviewers: cedric, woohyun, raster
CC: savio, cedric
Differential Revision: https://phab.enlightenment.org/D1052
2014-07-03 00:28:22 -07:00
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#ifndef ELDBUS_CXX_ELDBUS_MESSAGE_ARGUMENTS_HH
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#define ELDBUS_CXX_ELDBUS_MESSAGE_ARGUMENTS_HH
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#include <Eldbus.h>
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#include <tuple>
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#include <iostream>
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namespace efl { namespace eldbus { namespace _detail {
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template <std::size_t I, typename Seq, typename Tuple>
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bool _init_raw_tuple(Eldbus_Message_Iter*, Tuple const&, std::true_type)
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{
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return true;
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}
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template <std::size_t I, typename Seq, typename Tuple>
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bool _init_raw_tuple(Eldbus_Message_Iter* iterator, Tuple const& tuple, std::false_type)
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{
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typedef signature_traits<typename std::tuple_element<I, Seq>::type> traits;
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typedef typename traits::value_type element_type;
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char* c = eldbus_message_iter_signature_get(iterator);
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if(c[0] != signature_traits<element_type>::sig)
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{
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return false;
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}
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eldbus_message_iter_get_and_next(iterator, *c, &std::get<I>(tuple));
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return _init_raw_tuple<I+1, Seq>
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(iterator, tuple, std::integral_constant<bool, (I+1 == std::tuple_size<Tuple>::value)>());
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}
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template <std::size_t I, typename Tuple>
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bool _append_tuple(Eldbus_Message*, Tuple const&, std::true_type)
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{
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return true;
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}
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template <std::size_t I, typename Tuple>
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bool _append_tuple(Eldbus_Message* message, Tuple const& tuple, std::false_type)
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{
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typedef signature_traits<typename std::tuple_element<I, Tuple>::type> traits;
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char signature[2] = {traits::sig, 0};
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if(!eldbus_message_arguments_append(message, signature, traits::to_raw(std::get<I>(tuple))))
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return false;
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return _append_tuple<I+1>
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(message, tuple, std::integral_constant<bool, (I+1 == std::tuple_size<Tuple>::value)>());
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}
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} } }
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#endif
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