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 // template <InputIterator Iter> 13 // void advance(Iter& i, Iter::difference_type n); 14 // 15 // template <BidirectionalIterator Iter> 16 // void advance(Iter& i, Iter::difference_type n); 17 // 18 // template <RandomAccessIterator Iter> 19 // void advance(Iter& i, Iter::difference_type n); 20 21 #include <iterator> 22 #include <cassert> 23 24 #include "test_iterators.h" 25 26 template <class It> 27 void 28 test(It i, typename std::iterator_traits<It>::difference_type n, It x) 29 { 30 std::advance(i, n); 31 assert(i == x); 32 } 33 34 int main() 35 { 36 const char* s = "1234567890"; 37 test(input_iterator<const char*>(s), 10, input_iterator<const char*>(s+10)); 38 test(forward_iterator<const char*>(s), 10, forward_iterator<const char*>(s+10)); 39 test(bidirectional_iterator<const char*>(s+5), 5, bidirectional_iterator<const char*>(s+10)); 40 test(bidirectional_iterator<const char*>(s+5), -5, bidirectional_iterator<const char*>(s)); 41 test(random_access_iterator<const char*>(s+5), 5, random_access_iterator<const char*>(s+10)); 42 test(random_access_iterator<const char*>(s+5), -5, random_access_iterator<const char*>(s)); 43 test(s+5, 5, s+10); 44 test(s+5, -5, s); 45 } 46
