default.pass.cpp revision f544330f341059b05a554eda2bec375183e130cb 
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
40template <typename Iter1, typename Iter2>
41void 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
46template <class Iter1, class Iter2>
47void
48test()
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
85int 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