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 // insert_iterator 13 14 // Test nested types and data members: 15 16 // template <InsertionContainer Cont> 17 // class insert_iterator { 18 // protected: 19 // Cont* container; 20 // Cont::iterator iter; 21 // public: 22 // typedef Cont container_type; 23 // typedef void value_type; 24 // typedef void difference_type; 25 // typedef insert_iterator<Cont>& reference; 26 // typedef void pointer; 27 // }; 28 29 #include <iterator> 30 #include <type_traits> 31 #include <vector> 32 33 template <class C> 34 struct find_members 35 : private std::insert_iterator<C> 36 { 37 explicit find_members(C& c) : std::insert_iterator<C>(c, c.begin()) {} 38 void test() 39 { 40 this->container = 0; 41 (void)(this->iter == this->iter); 42 } 43 }; 44 45 template <class C> 46 void 47 test() 48 { 49 typedef std::insert_iterator<C> R; 50 C c; 51 find_members<C> q(c); 52 q.test(); 53 static_assert((std::is_same<typename R::container_type, C>::value), ""); 54 static_assert((std::is_same<typename R::value_type, void>::value), ""); 55 static_assert((std::is_same<typename R::difference_type, void>::value), ""); 56 static_assert((std::is_same<typename R::reference, R&>::value), ""); 57 static_assert((std::is_same<typename R::pointer, void>::value), ""); 58 static_assert((std::is_same<typename R::iterator_category, std::output_iterator_tag>::value), ""); 59 } 60 61 int main() 62 { 63 test<std::vector<int> >(); 64 } 65
