1 //===----------------------------------------------------------------------===// 2 // 3 // The LLVM Compiler Infrastructure 4 // 5 // This file is dual licensed under the MIT and the University of Illinois Open 6 // Source Licenses. See LICENSE.TXT for details. 7 // 8 //===----------------------------------------------------------------------===// 9 10 // <iterator> 11 12 // front_insert_iterator 13 14 // Test nested types and data member: 15 16 // template <class Container> 17 // class front_insert_iterator { 18 // protected: 19 // Container* container; 20 // public: 21 // typedef Container container_type; 22 // typedef void value_type; 23 // typedef void difference_type; 24 // typedef front_insert_iterator<Cont>& reference; 25 // typedef void pointer; 26 // typedef output_iterator_tag iterator_category; 27 // }; 28 29 #include <iterator> 30 #include <type_traits> 31 #include <vector> 32 33 template <class C> 34 struct find_container 35 : private std::front_insert_iterator<C> 36 { 37 explicit find_container(C& c) : std::front_insert_iterator<C>(c) {} 38 void test() {this->container = 0;} 39 }; 40 41 template <class C> 42 void 43 test() 44 { 45 typedef std::front_insert_iterator<C> R; 46 C c; 47 find_container<C> q(c); 48 q.test(); 49 static_assert((std::is_same<typename R::container_type, C>::value), ""); 50 static_assert((std::is_same<typename R::value_type, void>::value), ""); 51 static_assert((std::is_same<typename R::difference_type, void>::value), ""); 52 static_assert((std::is_same<typename R::reference, R&>::value), ""); 53 static_assert((std::is_same<typename R::pointer, void>::value), ""); 54 static_assert((std::is_same<typename R::iterator_category, std::output_iterator_tag>::value), ""); 55 } 56 57 int main() 58 { 59 test<std::vector<int> >(); 60 } 61
