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 // move_iterator 13 14 // requires RandomAccessIterator<Iter> 15 // unspecified operator[](difference_type n) const; 16 17 #include <iterator> 18 #include <cassert> 19 #ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES 20 #include <memory> 21 #endif 22 23 #include "test_iterators.h" 24 25 template <class It> 26 void 27 test(It i, typename std::iterator_traits<It>::difference_type n, 28 typename std::iterator_traits<It>::value_type x) 29 { 30 typedef typename std::iterator_traits<It>::value_type value_type; 31 const std::move_iterator<It> r(i); 32 value_type rr = r[n]; 33 assert(rr == x); 34 } 35 36 #ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES 37 38 struct do_nothing 39 { 40 void operator()(void*) const {} 41 }; 42 43 #endif // _LIBCPP_HAS_NO_RVALUE_REFERENCES 44 45 int main() 46 { 47 char s[] = "1234567890"; 48 test(random_access_iterator<char*>(s+5), 4, '0'); 49 test(s+5, 4, '0'); 50 #ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES 51 int i[5]; 52 typedef std::unique_ptr<int, do_nothing> Ptr; 53 Ptr p[5]; 54 for (unsigned j = 0; j < 5; ++j) 55 p[j].reset(i+j); 56 test(p, 3, Ptr(i+3)); 57 #endif // _LIBCPP_HAS_NO_RVALUE_REFERENCES 58 } 59
