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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.
//
//===----------------------------------------------------------------------===//
// UNSUPPORTED: c++98, c++03, c++11, c++14
// <unordered_map>
// class unordered_map
// node_type extract(key_type const&);
#include <unordered_map>
#include "min_allocator.h"
#include "Counter.h"
template <class Container, class KeyTypeIter>
void test(Container& c, KeyTypeIter first, KeyTypeIter last)
{
size_t sz = c.size();
assert((size_t)std::distance(first, last) == sz);
for (KeyTypeIter copy = first; copy != last; ++copy)
{
typename Container::node_type t = c.extract(*copy);
assert(!t.empty());
--sz;
assert(t.key() == *copy);
t.key() = *first; // We should be able to mutate key.
assert(t.key() == *first);
assert(t.get_allocator() == c.get_allocator());
assert(sz == c.size());
}
assert(c.size() == 0);
for (KeyTypeIter copy = first; copy != last; ++copy)
{
typename Container::node_type t = c.extract(*copy);
assert(t.empty());
}
}
int main()
{
{
std::unordered_map<int, int> m = {{1,1}, {2,2}, {3,3}, {4,4}, {5,5}, {6,6}};
int keys[] = {1, 2, 3, 4, 5, 6};
test(m, std::begin(keys), std::end(keys));
}
{
std::unordered_map<Counter<int>, Counter<int>> m =
{{1,1}, {2,2}, {3,3}, {4,4}, {5,5}, {6,6}};
{
Counter<int> keys[] = {1, 2, 3, 4, 5, 6};
assert(Counter_base::gConstructed == 12+6);
test(m, std::begin(keys), std::end(keys));
}
assert(Counter_base::gConstructed == 0);
}
{
using min_alloc_map =
std::unordered_map<int, int, std::hash<int>, std::equal_to<int>,
min_allocator<std::pair<const int, int>>>;
min_alloc_map m = {{1, 1}, {2, 2}, {3, 3}, {4, 4}, {5, 5}, {6, 6}};
int keys[] = {1, 2, 3, 4, 5, 6};
test(m, std::begin(keys), std::end(keys));
}
}
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