Embedded Template Library 1.0
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overload.h
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1
2
3/******************************************************************************
4The MIT License(MIT)
5
6Embedded Template Library.
7https://github.com/ETLCPP/etl
8https://www.etlcpp.com
9
10Copyright(c) 2021 John Wellbelove
11
12Permission is hereby granted, free of charge, to any person obtaining a copy
13of this software and associated documentation files(the "Software"), to deal
14in the Software without restriction, including without limitation the rights
15to use, copy, modify, merge, publish, distribute, sublicense, and / or sell
16copies of the Software, and to permit persons to whom the Software is
17furnished to do so, subject to the following conditions :
18
19The above copyright notice and this permission notice shall be included in all
20copies or substantial portions of the Software.
21
22THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
23IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
24FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.IN NO EVENT SHALL THE
25AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
26LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
27OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
28SOFTWARE.
29******************************************************************************/
30
31#ifndef ETL_OVERLOAD_INCLUDED
32#define ETL_OVERLOAD_INCLUDED
33
34#include "platform.h"
35#include "utility.h"
36#include "type_traits.h"
37
38namespace etl
39{
40#if ETL_USING_CPP17
41 //*************************************************************************
43 //*************************************************************************
44 template<typename... TOverloads>
45 struct overload : TOverloads...
46 {
47 using TOverloads::operator()...;
48 };
49
50 //*************************************************************************
52 //*************************************************************************
53 template<typename... TOverloads> overload(TOverloads...)->overload<TOverloads...>;
54
55 //*************************************************************************
57 //*************************************************************************
58 template <typename... TOverloads>
59 constexpr overload<TOverloads...> make_overload(TOverloads&&... overloads)
60 {
61 return overload<TOverloads...>{ etl::forward<TOverloads>(overloads)... };
62 }
63#elif ETL_USING_CPP11
64 //*************************************************************************
66 //*************************************************************************
67 template <typename... TRest>
68 struct overload;
69
70 //*************************************************************************
72 //*************************************************************************
73 template <typename TOverload, typename... TRest>
74 struct overload<TOverload, TRest...> : TOverload, overload<TRest...>
75 {
77 {
78 }
79
80 using TOverload::operator();
81 using overload<TRest...>::operator();
82 };
83
84 //*************************************************************************
86 //*************************************************************************
87 template <typename TOverload>
88 struct overload<TOverload> : TOverload
89 {
91 {
92 }
93
94 using TOverload::operator();
95 };
96
97 //*************************************************************************
99 //*************************************************************************
100 template <typename... TRest>
101 overload<TRest...> make_overload(TRest... overloads)
102 {
103 return overload<TRest...>(overloads...);
104 }
105#endif
106}
107
108#endif
bitset_ext
Definition absolute.h:38
pair holds two objects of arbitrary type
Definition utility.h:164
T1 first
first is a copy of the first object
Definition utility.h:168
ETL_CONSTEXPR pair()
Default constructor.
Definition utility.h:176