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 // back_insert_iterator 13 14 // Test nested types and data member: 15 16 // template <BackInsertionContainer Cont> 17 // class back_insert_iterator { 18 // protected: 19 // Cont* container; 20 // public: 21 // typedef Cont container_type; 22 // typedef void value_type; 23 // typedef void difference_type; 24 // typedef void reference; 25 // typedef void pointer; 26 // }; 27 28 #include <iterator> 29 #include <type_traits> 30 #include <vector> 31 32 template <class C> 33 struct find_container 34 : private std::back_insert_iterator<C> 35 { 36 explicit find_container(C& c) : std::back_insert_iterator<C>(c) {} 37 void test() {this->container = 0;} 38 }; 39 40 template <class C> 41 void 42 test() 43 { 44 typedef std::back_insert_iterator<C> R; 45 C c; 46 find_container<C> q(c); 47 q.test(); 48 static_assert((std::is_same<typename R::container_type, C>::value), ""); 49 static_assert((std::is_same<typename R::value_type, void>::value), ""); 50 static_assert((std::is_same<typename R::difference_type, void>::value), ""); 51 static_assert((std::is_same<typename R::reference, void>::value), ""); 52 static_assert((std::is_same<typename R::pointer, void>::value), ""); 53 static_assert((std::is_same<typename R::iterator_category, std::output_iterator_tag>::value), ""); 54 } 55 56 int main() 57 { 58 test<std::vector<int> >(); 59 } 60
