//===----------------------------------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//

// <map>

// class multimap

//       iterator find(const key_type& k);
// const_iterator find(const key_type& k) const;

#include <map>
#include <cassert>

#include "test_macros.h"
#include "min_allocator.h"
#include "private_constructor.h"
#include "is_transparent.h"

template <class Iter>
bool iter_in_range(Iter first, Iter last, Iter to_find) {
  for (; first != last; ++first) {
    if (first == to_find)
      return true;
  }
  return false;
}

int main(int, char**) {
  typedef std::pair<const int, double> V;
  {
    typedef std::multimap<int, double> M;
    {
      typedef M::iterator R;
      V ar[] = {V(5, 1), V(5, 2), V(5, 3), V(7, 1), V(7, 2), V(7, 3), V(9, 1), V(9, 2), V(9, 3)};
      M m(ar, ar + sizeof(ar) / sizeof(ar[0]));
      R r = m.find(5);
      assert(iter_in_range(std::next(m.begin(), 0), std::next(m.begin(), 3), r));
      r = m.find(6);
      assert(r == m.end());
      r = m.find(7);
      assert(iter_in_range(std::next(m.begin(), 3), std::next(m.begin(), 6), r));
      r = m.find(8);
      assert(r == m.end());
      r = m.find(9);
      assert(iter_in_range(std::next(m.begin(), 6), std::next(m.begin(), 9), r));
      r = m.find(10);
      assert(r == m.end());
    }
    {
      typedef M::const_iterator R;
      V ar[] = {V(5, 1), V(5, 2), V(5, 3), V(7, 1), V(7, 2), V(7, 3), V(9, 1), V(9, 2), V(9, 3)};
      const M m(ar, ar + sizeof(ar) / sizeof(ar[0]));
      R r = m.find(5);
      assert(iter_in_range(std::next(m.begin(), 0), std::next(m.begin(), 3), r));
      r = m.find(6);
      assert(r == m.end());
      r = m.find(7);
      assert(iter_in_range(std::next(m.begin(), 3), std::next(m.begin(), 6), r));
      r = m.find(8);
      assert(r == m.end());
      r = m.find(9);
      assert(iter_in_range(std::next(m.begin(), 6), std::next(m.begin(), 9), r));
      r = m.find(10);
      assert(r == m.end());
    }
  }
  {
    using Pair = std::pair<const int, int>;
    using Map  = std::multimap<int, int, std::greater<int> >;
    Pair arr[] = {
        Pair(5, 1), Pair(5, 2), Pair(5, 3), Pair(7, 1), Pair(7, 2), Pair(7, 3), Pair(9, 1), Pair(9, 2), Pair(9, 3)};
    const Map m(arr, arr + sizeof(arr) / sizeof(arr[0]));
    assert(iter_in_range(std::next(m.begin(), 6), std::next(m.begin(), 9), m.find(5)));
    assert(m.find(6) == m.end());
    assert(iter_in_range(std::next(m.begin(), 3), std::next(m.begin(), 6), m.find(7)));
    assert(m.find(8) == m.end());
    assert(iter_in_range(std::next(m.begin(), 0), std::next(m.begin(), 3), m.find(9)));
    assert(m.find(10) == m.end());
  }
#if TEST_STD_VER >= 11
  {
    typedef std::multimap<int, double, std::less<int>, min_allocator<std::pair<const int, double>>> M;
    {
      typedef M::iterator R;
      V ar[] = {V(5, 1), V(5, 2), V(5, 3), V(7, 1), V(7, 2), V(7, 3), V(9, 1), V(9, 2), V(9, 3)};
      M m(ar, ar + sizeof(ar) / sizeof(ar[0]));
      R r = m.find(5);
      assert(iter_in_range(std::next(m.begin(), 0), std::next(m.begin(), 3), r));
      r = m.find(6);
      assert(r == m.end());
      r = m.find(7);
      assert(iter_in_range(std::next(m.begin(), 3), std::next(m.begin(), 6), r));
      r = m.find(8);
      assert(r == m.end());
      r = m.find(9);
      assert(iter_in_range(std::next(m.begin(), 6), std::next(m.begin(), 9), r));
      r = m.find(10);
      assert(r == m.end());
    }
    {
      typedef M::const_iterator R;
      V ar[] = {V(5, 1), V(5, 2), V(5, 3), V(7, 1), V(7, 2), V(7, 3), V(9, 1), V(9, 2), V(9, 3)};
      const M m(ar, ar + sizeof(ar) / sizeof(ar[0]));
      R r = m.find(5);
      assert(iter_in_range(std::next(m.begin(), 0), std::next(m.begin(), 3), r));
      r = m.find(6);
      assert(r == m.end());
      r = m.find(7);
      assert(iter_in_range(std::next(m.begin(), 3), std::next(m.begin(), 6), r));
      r = m.find(8);
      assert(r == m.end());
      r = m.find(9);
      assert(iter_in_range(std::next(m.begin(), 6), std::next(m.begin(), 9), r));
      r = m.find(10);
      assert(r == m.end());
    }
  }
#endif
#if TEST_STD_VER > 11
  {
    typedef std::multimap<int, double, std::less<>> M;
    typedef M::iterator R;

    V ar[] = {V(5, 1), V(5, 2), V(5, 3), V(7, 1), V(7, 2), V(7, 3), V(9, 1), V(9, 2), V(9, 3)};
    M m(ar, ar + sizeof(ar) / sizeof(ar[0]));
    R r = m.find(5);
    assert(iter_in_range(std::next(m.begin(), 0), std::next(m.begin(), 3), r));
    r = m.find(6);
    assert(r == m.end());
    r = m.find(7);
    assert(iter_in_range(std::next(m.begin(), 3), std::next(m.begin(), 6), r));
    r = m.find(8);
    assert(r == m.end());
    r = m.find(9);
    assert(iter_in_range(std::next(m.begin(), 6), std::next(m.begin(), 9), r));
    r = m.find(10);
    assert(r == m.end());

    r = m.find(C2Int(5));
    assert(iter_in_range(std::next(m.begin(), 0), std::next(m.begin(), 3), r));
    r = m.find(C2Int(6));
    assert(r == m.end());
    r = m.find(C2Int(7));
    assert(iter_in_range(std::next(m.begin(), 3), std::next(m.begin(), 6), r));
    r = m.find(C2Int(8));
    assert(r == m.end());
    r = m.find(C2Int(9));
    assert(iter_in_range(std::next(m.begin(), 6), std::next(m.begin(), 9), r));
    r = m.find(C2Int(10));
    assert(r == m.end());
  }

  {
    typedef PrivateConstructor PC;
    typedef std::multimap<PC, double, std::less<>> M;
    typedef M::iterator R;

    M m;
    m.insert(std::make_pair<PC, double>(PC::make(5), 1));
    m.insert(std::make_pair<PC, double>(PC::make(5), 2));
    m.insert(std::make_pair<PC, double>(PC::make(5), 3));
    m.insert(std::make_pair<PC, double>(PC::make(7), 1));
    m.insert(std::make_pair<PC, double>(PC::make(7), 2));
    m.insert(std::make_pair<PC, double>(PC::make(7), 3));
    m.insert(std::make_pair<PC, double>(PC::make(9), 1));
    m.insert(std::make_pair<PC, double>(PC::make(9), 2));
    m.insert(std::make_pair<PC, double>(PC::make(9), 3));

    R r = m.find(5);
    assert(iter_in_range(std::next(m.begin(), 0), std::next(m.begin(), 3), r));
    r = m.find(6);
    assert(r == m.end());
    r = m.find(7);
    assert(iter_in_range(std::next(m.begin(), 3), std::next(m.begin(), 6), r));
    r = m.find(8);
    assert(r == m.end());
    r = m.find(9);
    assert(iter_in_range(std::next(m.begin(), 6), std::next(m.begin(), 9), r));
    r = m.find(10);
    assert(r == m.end());
  }
#endif

  return 0;
}