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