| | 32 | namespace detail |
| | 33 | { |
| | 34 | template <class Self, class T> |
| | 35 | struct reference_wrapper_base_aux |
| | 36 | { |
| | 37 | protected: |
| | 38 | T &aux_get() const { |
| | 39 | return static_cast<Self const *>(this)->get(); |
| | 40 | } |
| | 41 | }; |
| | 42 | |
| | 43 | template <class Self, class T> struct reference_wrapper_base {}; |
| | 44 | |
| | 45 | template <class Self, class T, class U> |
| | 46 | struct reference_wrapper_base<Self, T(U)> |
| | 47 | : public std::unary_function<U, T> |
| | 48 | {}; |
| | 49 | |
| | 50 | template <class Self, class T, class U> |
| | 51 | struct reference_wrapper_base<Self, T(*)(U)> |
| | 52 | : public std::unary_function<U, T> |
| | 53 | {}; |
| | 54 | |
| | 55 | template <class Self, class T, class U> |
| | 56 | struct reference_wrapper_base<Self, T(U::*)()> |
| | 57 | : public std::unary_function<U*, T> |
| | 58 | , public reference_wrapper_base_aux<Self, T(U::*)()> |
| | 59 | { |
| | 60 | T operator()(U *u) const { |
| | 61 | return (u->*(this->aux_get()))(); |
| | 62 | } |
| | 63 | T operator()(U &u) const { |
| | 64 | return operator()(&u); |
| | 65 | } |
| | 66 | }; |
| | 67 | |
| | 68 | template <class Self, class T, class U> |
| | 69 | struct reference_wrapper_base<Self, T(U::*)() const> |
| | 70 | : public std::unary_function<const U*, T> |
| | 71 | , public reference_wrapper_base_aux<Self, T(U::*)() const> |
| | 72 | { |
| | 73 | T operator()(const U *u) const { |
| | 74 | return (u->*(this->aux_get()))(); |
| | 75 | } |
| | 76 | T operator()(const U &u) const { |
| | 77 | return operator()(&u); |
| | 78 | } |
| | 79 | }; |
| | 80 | |
| | 81 | template <class Self, class T, class U, class V> |
| | 82 | struct reference_wrapper_base<Self, T(U, V)> |
| | 83 | : public std::binary_function<U, V, T> |
| | 84 | {}; |
| | 85 | |
| | 86 | template <class Self, class T, class U, class V> |
| | 87 | struct reference_wrapper_base<Self, T(*)(U, V)> |
| | 88 | : public std::binary_function<U, V, T> |
| | 89 | {}; |
| | 90 | |
| | 91 | template <class Self, class T, class U, class V> |
| | 92 | struct reference_wrapper_base<Self, T(U::*)(V)> |
| | 93 | : public std::binary_function<U*, V, T> |
| | 94 | , public reference_wrapper_base_aux<Self, T(U::*)(V)> |
| | 95 | { |
| | 96 | T operator()(U *u, V &v) const { |
| | 97 | return (u->*(this->aux_get()))(v); |
| | 98 | } |
| | 99 | T operator()(U *u, const V &v) const { |
| | 100 | return (u->*(this->aux_get()))(v); |
| | 101 | } |
| | 102 | T operator()(U &u, V &v) const { |
| | 103 | return operator()(&u, &v); |
| | 104 | } |
| | 105 | T operator()(U &u, const V &v) const { |
| | 106 | return operator()(&u, &v); |
| | 107 | } |
| | 108 | }; |
| | 109 | |
| | 110 | template <class Self, class T, class U, class V> |
| | 111 | struct reference_wrapper_base<Self, T(U::*)(V) const> |
| | 112 | : public std::binary_function<const U*, V, T> |
| | 113 | , public reference_wrapper_base_aux<Self, T(U::*)(V)const> |
| | 114 | { |
| | 115 | T operator()(const U *u, V &v) const { |
| | 116 | return (u->*(this->aux_get()))(v); |
| | 117 | } |
| | 118 | T operator()(const U *u, const V &v) const { |
| | 119 | return (u->*(this->aux_get()))(v); |
| | 120 | } |
| | 121 | T operator()(const U &u, V &v) const { |
| | 122 | return operator()(&u, &v); |
| | 123 | } |
| | 124 | T operator()(const U &u, const V &v) const { |
| | 125 | return operator()(&u, &v); |
| | 126 | } |
| | 127 | }; |
| | 128 | } |