| blob | 09a3f9462f35e3d573e710018ee6545e6855152a |
1 /* { dg-do compile } */
2 /* { dg-options "-O2" } */
3 namespace sigc {
4 template <class T_type> struct type_trait {
5 typedef T_type& pass;
6 typedef const T_type& take;
7 typedef T_type* pointer;
8 };
9 template <class T_type> struct type_trait<T_type&> {
10 typedef T_type& pass;
11 };
12 template<> struct type_trait<void> {
13 typedef void pass;
14 };
15 template <class T_base, class T_derived> struct is_base_and_derived {
16 struct big {
17 char memory[64];
18 };
19 static big is_base_class_(...);
20 static char is_base_class_(typename type_trait<T_base>::pointer);
21 static const bool value = sizeof(is_base_class_(reinterpret_cast<typename type_trait<T_derived>::pointer>(0))) == sizeof(char);
22 };
23 struct nil;
24 struct functor_base {
25 };
26 template <class T_functor, bool I_derives_functor_base=is_base_and_derived<functor_base,T_functor>::value> struct functor_trait {
27 typedef typename T_functor::result_type result_type;
28 typedef T_functor functor_type;
29 };
30 struct adaptor_base : public functor_base {
31 };
32 template <class T_functor, class T_arg1=void,class T_arg2=void,class T_arg3=void,class T_arg4=void,class T_arg5=void,class T_arg6=void,class T_arg7=void, bool I_derives_adaptor_base=is_base_and_derived<adaptor_base,T_functor>::value> struct deduce_result_type {
33 typedef typename functor_trait<T_functor>::result_type type;
34 };
35 template <class T_functor> struct adaptor_functor
36 : public adaptor_base {
37 template <class T_arg1=void,class T_arg2=void,class T_arg3=void,class T_arg4=void,class T_arg5=void,class T_arg6=void,class T_arg7=void> struct deduce_result_type {
38 typedef typename sigc::deduce_result_type<T_functor, T_arg1,T_arg2,T_arg3,T_arg4,T_arg5,T_arg6,T_arg7>::type type;
39 };
40 typedef typename functor_trait<T_functor>::result_type result_type;
41 template <class T_arg1,class T_arg2> typename deduce_result_type<T_arg1,T_arg2>::type operator()(T_arg1 _A_arg1,T_arg2 _A_arg2) const {
42 return functor_(_A_arg1,_A_arg2);
43 }
44 explicit adaptor_functor(const T_functor& _A_functor) : functor_(_A_functor) {
45 }
46 mutable T_functor functor_;
47 };
48 template <class T_functor, bool I_isadaptor = is_base_and_derived<adaptor_base, T_functor>::value> struct adaptor_trait;
49 template <class T_functor> struct adaptor_trait<T_functor, true> {
50 typedef T_functor adaptor_type;
51 };
52 template <class T_functor> struct adaptor_trait<T_functor, false> {
53 typedef typename functor_trait<T_functor>::functor_type functor_type;
54 typedef adaptor_functor<functor_type> adaptor_type;
55 };
56 template <class T_functor> struct adapts
57 : public adaptor_base {
58 typedef typename adaptor_trait<T_functor>::adaptor_type adaptor_type;
59 explicit adapts(const T_functor& _A_functor) : functor_(_A_functor) {
60 }
61 mutable adaptor_type functor_;
62 };
63 template <class T_type> struct unwrap_reference {
64 typedef T_type type;
65 };
66 template <class T_type> class bound_argument {
67 public:
68 bound_argument(const T_type& _A_argument) : visited_(_A_argument) {
69 }
70 inline T_type& invoke() {
71 }
72 T_type visited_;
73 };
74 template <int I_location, class T_functor, class T_type1=nil,class T_type2=nil,class T_type3=nil,class T_type4=nil,class T_type5=nil,class T_type6=nil,class T_type7=nil> struct bind_functor;
75 template <class T_functor, class T_bound> struct bind_functor<0, T_functor, T_bound, nil,nil,nil,nil,nil,nil> : public adapts<T_functor> {
76 typedef typename adapts<T_functor>::adaptor_type adaptor_type;
77 template <class T_arg1=void,class T_arg2=void,class T_arg3=void,class T_arg4=void,class T_arg5=void,class T_arg6=void,class T_arg7=void> struct deduce_result_type {
78 typedef typename adaptor_type::template deduce_result_type<typename type_trait<typename unwrap_reference<T_bound>::type>::pass, typename type_trait<T_arg1>::pass, typename type_trait<T_arg2>::pass, typename type_trait<T_arg3>::pass, typename type_trait<T_arg4>::pass, typename type_trait<T_arg5>::pass, typename type_trait<T_arg6>::pass>::type type;
79 };
80 typedef typename adaptor_type::result_type result_type;
81 result_type operator()() {
82 return this->functor_.template operator()<typename type_trait<typename unwrap_reference<T_bound>::type>::pass> (bound_.invoke());
83 }
84 template <class T_arg1> typename deduce_result_type<T_arg1>::type operator()(T_arg1 _A_arg1) {
85 return this->functor_.template operator()<typename type_trait<typename unwrap_reference<T_bound>::type>::pass, typename type_trait<T_arg1>::pass> (bound_.invoke(), _A_arg1);
86 }
87 bind_functor(typename type_trait<T_functor>::take _A_func, typename type_trait<T_bound>::take _A_bound) : adapts<T_functor>(_A_func), bound_(_A_bound) {
88 }
89 bound_argument<T_bound> bound_;
90 };
91 template <int I_location, class T_bound1, class T_functor> inline bind_functor<I_location, T_functor, T_bound1> bind(const T_functor& _A_func, T_bound1 _A_b1) {
92 return bind_functor<I_location, T_functor, T_bound1>(_A_func, _A_b1);
93 };
94 }
95 struct foo {
96 typedef int result_type;
97 int operator()(int i, int j);
98 };
99 int main() {
100 sigc::bind<0>(sigc::bind<0>(foo(),7),8)();
101 }