| Fast CDR Version 2.3.5 Fast CDR

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optional.hpp
1// Copyright 2023 Proyectos y Sistemas de Mantenimiento SL (eProsima).
2//
3// Licensed under the Apache License, Version 2.0 (the "License");
4// you may not use this file except in compliance with the License.
5// You may obtain a copy of the License at
6//
7// http://www.apache.org/licenses/LICENSE-2.0
8//
9// Unless required by applicable law or agreed to in writing, software
10// distributed under the License is distributed on an "AS IS" BASIS,
11// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12// See the License for the specific language governing permissions and
13// limitations under the License.
14//
15#ifndef _FASTCDR_XCDR_DETAIL_OPTIONAL_HPP_
16#define _FASTCDR_XCDR_DETAIL_OPTIONAL_HPP_
17
18#include <type_traits>
19
20 namespace eprosima {
21 namespace fastcdr {
22 namespace detail {
23 template<class T, typename = void>
24 struct optional_storage
25{
26 union
27 {
28 char dummy_;
29 T val_;
30 };
31
32 bool engaged_ { false };
33
34 optional_storage()
35 {
36 }
37
38 ~optional_storage()
39 {
40 if (engaged_)
41 {
42 val_.~T();
43 }
44 }
45
46};
47
48/* *INDENT-OFF* */
49 template<class T>
50 struct optional_storage<T, typename std::enable_if<std::is_trivially_destructible<T>::value>::type>
51{
52 union
53 {
54 char dummy_; T val_;
55 };
56
57 bool engaged_ { false };
58
59 optional_storage()
60 {
61 }
62
63 ~optional_storage() = default;
64};
65/* *INDENT-ON* */
66} // namespace detail
67} // namespace fastcdr
68} // namespace eprosima
69
70#endif //_FASTCDR_XCDR_DETAIL_OPTIONAL_HPP_
71
eprosima::fastcdr::detail
Definition optional.hpp:22
eprosima::fastcdr
Definition Cdr.h:50
eprosima
Definition Cdr.h:49
eprosima::fastcdr::detail::optional_storage< T, typename std::enable_if< std::is_trivially_destructible< T >::value >::type >::dummy_
char dummy_
Definition optional.hpp:54
eprosima::fastcdr::detail::optional_storage< T, typename std::enable_if< std::is_trivially_destructible< T >::value >::type >::engaged_
bool engaged_
Definition optional.hpp:57
eprosima::fastcdr::detail::optional_storage< T, typename std::enable_if< std::is_trivially_destructible< T >::value >::type >::val_
T val_
Definition optional.hpp:54
eprosima::fastcdr::detail::optional_storage< T, typename std::enable_if< std::is_trivially_destructible< T >::value >::type >::~optional_storage
~optional_storage()=default
eprosima::fastcdr::detail::optional_storage< T, typename std::enable_if< std::is_trivially_destructible< T >::value >::type >::optional_storage
optional_storage()
Definition optional.hpp:59
eprosima::fastcdr::detail::optional_storage::dummy_
char dummy_
Definition optional.hpp:28
eprosima::fastcdr::detail::optional_storage::engaged_
bool engaged_
Definition optional.hpp:32
eprosima::fastcdr::detail::optional_storage::val_
T val_
Definition optional.hpp:29
eprosima::fastcdr::detail::optional_storage::~optional_storage
~optional_storage()
Definition optional.hpp:38
eprosima::fastcdr::detail::optional_storage::optional_storage
optional_storage()
Definition optional.hpp:34