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 // UNSUPPORTED: c++98, c++03, c++11, c++14 11 12 // <functional> 13 14 // default searcher 15 // template<class _ForwardIterator, class _BinaryPredicate = equal_to<>> 16 // class default_searcher { 17 // public: 18 // default_searcher(_ForwardIterator __f, _ForwardIterator __l, 19 // _BinaryPredicate __p = _BinaryPredicate()) 20 // : __first_(__f), __last_(__l), __pred_(__p) {} 21 // 22 // template <typename _ForwardIterator2> 23 // pair<_ForwardIterator2, _ForwardIterator2> 24 // operator () (_ForwardIterator2 __f, _ForwardIterator2 __l) const { 25 // return std::search(__f, __l, __first_, __last_, __pred_); 26 // } 27 // 28 // private: 29 // _ForwardIterator __first_; 30 // _ForwardIterator __last_; 31 // _BinaryPredicate __pred_; 32 // }; 33 34 35 #include <algorithm> 36 #include <functional> 37 #include <cassert> 38 39 #include "test_iterators.h" 40 41 template <typename Iter1, typename Iter2> 42 void do_search(Iter1 b1, Iter1 e1, Iter2 b2, Iter2 e2, Iter1 result) { 43 std::default_searcher<Iter2> s{b2, e2}; 44 assert(result == std::search(b1, e1, s)); 45 } 46 47 template <class Iter1, class Iter2> 48 void 49 test() 50 { 51 int ia[] = {0, 1, 2, 3, 4, 5}; 52 const unsigned sa = sizeof(ia)/sizeof(ia[0]); 53 do_search(Iter1(ia), Iter1(ia+sa), Iter2(ia), Iter2(ia), Iter1(ia)); 54 do_search(Iter1(ia), Iter1(ia+sa), Iter2(ia), Iter2(ia+1), Iter1(ia)); 55 do_search(Iter1(ia), Iter1(ia+sa), Iter2(ia+1), Iter2(ia+2), Iter1(ia+1)); 56 do_search(Iter1(ia), Iter1(ia+sa), Iter2(ia+2), Iter2(ia+2), Iter1(ia)); 57 do_search(Iter1(ia), Iter1(ia+sa), Iter2(ia+2), Iter2(ia+3), Iter1(ia+2)); 58 do_search(Iter1(ia), Iter1(ia+sa), Iter2(ia+2), Iter2(ia+3), Iter1(ia+2)); 59 do_search(Iter1(ia), Iter1(ia), Iter2(ia+2), Iter2(ia+3), Iter1(ia)); 60 do_search(Iter1(ia), Iter1(ia+sa), Iter2(ia+sa-1), Iter2(ia+sa), Iter1(ia+sa-1)); 61 do_search(Iter1(ia), Iter1(ia+sa), Iter2(ia+sa-3), Iter2(ia+sa), Iter1(ia+sa-3)); 62 do_search(Iter1(ia), Iter1(ia+sa), Iter2(ia), Iter2(ia+sa), Iter1(ia)); 63 do_search(Iter1(ia), Iter1(ia+sa-1), Iter2(ia), Iter2(ia+sa), Iter1(ia+sa-1)); 64 do_search(Iter1(ia), Iter1(ia+1), Iter2(ia), Iter2(ia+sa), Iter1(ia+1)); 65 int ib[] = {0, 1, 2, 0, 1, 2, 3, 0, 1, 2, 3, 4}; 66 const unsigned sb = sizeof(ib)/sizeof(ib[0]); 67 int ic[] = {1}; 68 do_search(Iter1(ib), Iter1(ib+sb), Iter2(ic), Iter2(ic+1), Iter1(ib+1)); 69 int id[] = {1, 2}; 70 do_search(Iter1(ib), Iter1(ib+sb), Iter2(id), Iter2(id+2), Iter1(ib+1)); 71 int ie[] = {1, 2, 3}; 72 do_search(Iter1(ib), Iter1(ib+sb), Iter2(ie), Iter2(ie+3), Iter1(ib+4)); 73 int ig[] = {1, 2, 3, 4}; 74 do_search(Iter1(ib), Iter1(ib+sb), Iter2(ig), Iter2(ig+4), Iter1(ib+8)); 75 int ih[] = {0, 1, 1, 1, 1, 2, 3, 0, 1, 2, 3, 4}; 76 const unsigned sh = sizeof(ih)/sizeof(ih[0]); 77 int ii[] = {1, 1, 2}; 78 do_search(Iter1(ih), Iter1(ih+sh), Iter2(ii), Iter2(ii+3), Iter1(ih+3)); 79 int ij[] = {0, 1, 0, 0, 1, 0, 0, 0, 0, 0, 1, 1, 1, 1, 0, 0}; 80 const unsigned sj = sizeof(ij)/sizeof(ij[0]); 81 int ik[] = {0, 0, 0, 0, 1, 1, 1, 1, 0, 0}; 82 const unsigned sk = sizeof(ik)/sizeof(ik[0]); 83 do_search(Iter1(ij), Iter1(ij+sj), Iter2(ik), Iter2(ik+sk), Iter1(ij+6)); 84 } 85 86 int main() { 87 test<forward_iterator<const int*>, forward_iterator<const int*> >(); 88 test<forward_iterator<const int*>, bidirectional_iterator<const int*> >(); 89 test<forward_iterator<const int*>, random_access_iterator<const int*> >(); 90 test<bidirectional_iterator<const int*>, forward_iterator<const int*> >(); 91 test<bidirectional_iterator<const int*>, bidirectional_iterator<const int*> >(); 92 test<bidirectional_iterator<const int*>, random_access_iterator<const int*> >(); 93 test<random_access_iterator<const int*>, forward_iterator<const int*> >(); 94 test<random_access_iterator<const int*>, bidirectional_iterator<const int*> >(); 95 test<random_access_iterator<const int*>, random_access_iterator<const int*> >(); 96 } 97
