LeechCraft  0.6.70-6645-gcd10d7e
Modular cross-platform feature rich live environment.
functional.h
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29 
30 #pragma once
31 
32 #ifndef USE_CPP14
33 #include <functional>
34 #endif
35 
36 #include <type_traits>
37 #include "oldcppkludges.h"
38 
39 namespace LeechCraft
40 {
41 namespace Util
42 {
55 #ifdef USE_CPP14
56  template<typename R, typename B, typename C, typename... Args>
57  auto BindMemFn (R (B::*fn) (Args...), C *c)
58  {
59  static_assert (std::is_base_of<B, C> {}, "Base class where the member pointer belongs must be convertible to the binded object's class.");
60  return [fn, c] (Args... args) { return (c->*fn) (args...); };
61  }
62 
63  template<typename R, typename B, typename C, typename... Args>
64  auto BindMemFn (R (B::*fn) (Args...) const, const C *c)
65  {
66  static_assert (std::is_base_of<B, C> {}, "Base class where the member pointer belongs must be convertible to the binded object's class.");
67  return [fn, c] (Args... args) { return (c->*fn) (args...); };
68  }
69 #else
70  template<typename R, typename B, typename C, typename... Args>
71  std::function<R (Args...)> BindMemFn (R (B::*fn) (Args...), C *c)
72  {
73  static_assert (std::is_base_of<B, C> {}, "Base class where the member pointer belongs must be convertible to the binded object's class.");
74  return [fn, c] (Args... args) { return (c->*fn) (args...); };
75  }
76 
77  template<typename R, typename B, typename C, typename... Args>
78  std::function<R (Args...)> BindMemFn (R (B::*fn) (Args...) const, const C *c)
79  {
80  static_assert (std::is_base_of<B, C> {}, "Base class where the member pointer belongs must be convertible to the binded object's class.");
81  return [fn, c] (Args... args) { return (c->*fn) (args...); };
82  }
83 #endif
84 
85  template<typename To>
86  struct Caster
87  {
88  template<typename From>
90  {
91  return To { std::forward<From> (from) };
92  }
93 
94  template<typename From>
96  {
97  return from;
98  }
99  };
100 }
101 }
typename std::enable_if< B, T >::type EnableIf_t
Definition: oldcppkludges.h:67
std::function< R(Args...)> BindMemFn(R(B::*fn)(Args...), C *c)
Binds an instance of an object to its member function.
Definition: functional.h:71
EnableIf_t<!std::is_base_of< To, Decay_t< From > >::value, To > operator()(From &&from) const
Definition: functional.h:89