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//===----------------------------------------------------------------------===//
//
// The LLVM Compiler Infrastructure
//
// This file is dual licensed under the MIT and the University of Illinois Open
// Source Licenses. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
// <functional>
// UNSUPPORTED: c++98, c++03, c++11
// default searcher
// template<class _ForwardIterator, class _BinaryPredicate = equal_to<>>
// class default_searcher {
// public:
// default_searcher(_ForwardIterator __f, _ForwardIterator __l,
// _BinaryPredicate __p = _BinaryPredicate())
// : __first_(__f), __last_(__l), __pred_(__p) {}
//
// template <typename _ForwardIterator2>
// pair<_ForwardIterator2, _ForwardIterator2>
// operator () (_ForwardIterator2 __f, _ForwardIterator2 __l) const {
// return std::search(__f, __l, __first_, __last_, __pred_);
// }
//
// private:
// _ForwardIterator __first_;
// _ForwardIterator __last_;
// _BinaryPredicate __pred_;
// };
#include <experimental/algorithm>
#include <experimental/functional>
#include <cassert>
#include "test_iterators.h"
struct count_equal
{
static unsigned count;
template <class T>
bool operator()(const T& x, const T& y) const
{++count; return x == y;}
};
unsigned count_equal::count = 0;
template <typename Iter1, typename Iter2>
void do_search(Iter1 b1, Iter1 e1, Iter2 b2, Iter2 e2, Iter1 result, unsigned max_count) {
std::experimental::default_searcher<Iter2, count_equal> s{b2, e2};
count_equal::count = 0;
assert(result == std::experimental::search(b1, e1, s));
assert(count_equal::count <= max_count);
}
template <class Iter1, class Iter2>
void
test()
{
int ia[] = {0, 1, 2, 3, 4, 5};
const unsigned sa = sizeof(ia)/sizeof(ia[0]);
do_search(Iter1(ia), Iter1(ia+sa), Iter2(ia), Iter2(ia), Iter1(ia), 0);
do_search(Iter1(ia), Iter1(ia+sa), Iter2(ia), Iter2(ia+1), Iter1(ia), sa);
do_search(Iter1(ia), Iter1(ia+sa), Iter2(ia+1), Iter2(ia+2), Iter1(ia+1), sa);
do_search(Iter1(ia), Iter1(ia+sa), Iter2(ia+2), Iter2(ia+2), Iter1(ia), 0);
do_search(Iter1(ia), Iter1(ia+sa), Iter2(ia+2), Iter2(ia+3), Iter1(ia+2), sa);
do_search(Iter1(ia), Iter1(ia+sa), Iter2(ia+2), Iter2(ia+3), Iter1(ia+2), sa);
do_search(Iter1(ia), Iter1(ia), Iter2(ia+2), Iter2(ia+3), Iter1(ia), 0);
do_search(Iter1(ia), Iter1(ia+sa), Iter2(ia+sa-1), Iter2(ia+sa), Iter1(ia+sa-1), sa);
do_search(Iter1(ia), Iter1(ia+sa), Iter2(ia+sa-3), Iter2(ia+sa), Iter1(ia+sa-3), 3*sa);
do_search(Iter1(ia), Iter1(ia+sa), Iter2(ia), Iter2(ia+sa), Iter1(ia), sa*sa);
do_search(Iter1(ia), Iter1(ia+sa-1), Iter2(ia), Iter2(ia+sa), Iter1(ia+sa-1), (sa-1)*sa);
do_search(Iter1(ia), Iter1(ia+1), Iter2(ia), Iter2(ia+sa), Iter1(ia+1), sa);
int ib[] = {0, 1, 2, 0, 1, 2, 3, 0, 1, 2, 3, 4};
const unsigned sb = sizeof(ib)/sizeof(ib[0]);
int ic[] = {1};
do_search(Iter1(ib), Iter1(ib+sb), Iter2(ic), Iter2(ic+1), Iter1(ib+1), sb);
int id[] = {1, 2};
do_search(Iter1(ib), Iter1(ib+sb), Iter2(id), Iter2(id+2), Iter1(ib+1), sb*2);
int ie[] = {1, 2, 3};
do_search(Iter1(ib), Iter1(ib+sb), Iter2(ie), Iter2(ie+3), Iter1(ib+4), sb*3);
int ig[] = {1, 2, 3, 4};
do_search(Iter1(ib), Iter1(ib+sb), Iter2(ig), Iter2(ig+4), Iter1(ib+8), sb*4);
int ih[] = {0, 1, 1, 1, 1, 2, 3, 0, 1, 2, 3, 4};
const unsigned sh = sizeof(ih)/sizeof(ih[0]);
int ii[] = {1, 1, 2};
do_search(Iter1(ih), Iter1(ih+sh), Iter2(ii), Iter2(ii+3), Iter1(ih+3), sh*3);
}
int main() {
test<forward_iterator<const int*>, forward_iterator<const int*> >();
test<forward_iterator<const int*>, bidirectional_iterator<const int*> >();
test<forward_iterator<const int*>, random_access_iterator<const int*> >();
test<bidirectional_iterator<const int*>, forward_iterator<const int*> >();
test<bidirectional_iterator<const int*>, bidirectional_iterator<const int*> >();
test<bidirectional_iterator<const int*>, random_access_iterator<const int*> >();
test<random_access_iterator<const int*>, forward_iterator<const int*> >();
test<random_access_iterator<const int*>, bidirectional_iterator<const int*> >();
test<random_access_iterator<const int*>, random_access_iterator<const int*> >();
}
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