Open3D (C++ API)  0.12.0
FuncionTraits.h
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26 
27 #pragma once
28 
29 namespace open3d {
30 namespace core {
31 
34 template <typename T>
35 struct FunctionTraits : public FunctionTraits<decltype(&T::operator())> {};
36 
51 template <typename ClassType, typename T>
52 struct FunctionTraits<T ClassType::*> : public FunctionTraits<T> {};
53 
54 // Const class member functions
55 template <typename ClassType, typename ReturnType, typename... Args>
56 struct FunctionTraits<ReturnType (ClassType::*)(Args...) const>
57  : public FunctionTraits<ReturnType(Args...)> {};
58 
59 // Reference types
60 template <typename T>
61 struct FunctionTraits<T&> : public FunctionTraits<T> {};
62 template <typename T>
63 struct FunctionTraits<T*> : public FunctionTraits<T> {};
64 
65 // Free functions
66 template <typename ReturnType, typename... Args>
67 struct FunctionTraits<ReturnType(Args...)> {
68  // arity is the number of arguments.
69  enum { arity = sizeof...(Args) };
70 
71  typedef std::tuple<Args...> ArgsTuple;
72  typedef ReturnType result_type;
73 
74  template <size_t i>
75  struct arg {
76  typedef typename std::tuple_element<i, std::tuple<Args...>>::type type;
77  // the i-th argument is equivalent to the i-th tuple element of a tuple
78  // composed of those arguments.
79  };
80 };
81 
82 template <typename T>
84  using traits = FunctionTraits<T>;
85  using res_t = typename traits::result_type;
86 };
87 
88 template <typename T>
90  using traits = FunctionTraits<T>;
91  using res_t = typename traits::result_type;
92  using arg0_t = typename traits::template arg<0>::type;
93 };
94 
95 template <typename T>
97  using traits = FunctionTraits<T>;
98  using res_t = typename traits::result_type;
99  using arg0_t = typename traits::template arg<0>::type;
100  using arg1_t = typename traits::template arg<1>::type;
101 };
102 
103 } // namespace core
104 } // namespace open3d
std::tuple< Args... > ArgsTuple
Definition: FuncionTraits.h:71
FunctionTraits< T > traits
Definition: FuncionTraits.h:97
FunctionTraits< T > traits
Definition: FuncionTraits.h:84
Definition: FuncionTraits.h:35
std::tuple_element< i, std::tuple< Args... > >::type type
Definition: FuncionTraits.h:76
FunctionTraits< T > traits
Definition: FuncionTraits.h:90
typename traits::result_type res_t
Definition: FuncionTraits.h:91
typename traits::result_type res_t
Definition: FuncionTraits.h:85
typename traits::result_type res_t
Definition: FuncionTraits.h:98
char type
Definition: FilePCD.cpp:60
Definition: FuncionTraits.h:96
Definition: FuncionTraits.h:89
Definition: PinholeCameraIntrinsic.cpp:35
ReturnType result_type
Definition: FuncionTraits.h:72
typename traits::template arg< 0 >::type arg0_t
Definition: FuncionTraits.h:92
Definition: FuncionTraits.h:83
typename traits::template arg< 0 >::type arg0_t
Definition: FuncionTraits.h:99
typename traits::template arg< 1 >::type arg1_t
Definition: FuncionTraits.h:100