//===----------------------------------------------------------------------===//
//
// 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
//
//===----------------------------------------------------------------------===//

// <deque>

// template <class T, class A>
//   void swap(deque<T, A>& x, deque<T, A>& y);

#include "asan_testing.h"
#include <deque>
#include <cassert>
#include "test_macros.h"
#include "test_allocator.h"
#include "min_allocator.h"

template <class C>
C make(int size, int start = 0) {
  const int b = 4096 / sizeof(int);
  int init    = 0;
  if (start > 0) {
    init = (start + 1) / b + ((start + 1) % b != 0);
    init *= b;
    --init;
  }
  C c(init, 0);
  for (int i = 0; i < init - start; ++i)
    c.pop_back();
  for (int i = 0; i < size; ++i)
    c.push_back(i);
  for (int i = 0; i < start; ++i)
    c.pop_front();
  return c;
}

template <class C>
void testN(int start, int N, int M) {
  C c1      = make<C>(N, start);
  C c2      = make<C>(M);
  C c1_save = c1;
  C c2_save = c2;
  swap(c1, c2);
  assert(c1 == c2_save);
  assert(c2 == c1_save);
  LIBCPP_ASSERT(is_double_ended_contiguous_container_asan_correct(c1));
  LIBCPP_ASSERT(is_double_ended_contiguous_container_asan_correct(c2));
  LIBCPP_ASSERT(is_double_ended_contiguous_container_asan_correct(c1_save));
  LIBCPP_ASSERT(is_double_ended_contiguous_container_asan_correct(c2_save));
}

int main(int, char**) {
  {
    int rng[]   = {0, 1, 2, 3, 1023, 1024, 1025, 2047, 2048, 2049};
    const int N = sizeof(rng) / sizeof(rng[0]);
    for (int i = 0; i < N; ++i)
      for (int j = 0; j < N; ++j)
        for (int k = 0; k < N; ++k)
          testN<std::deque<int> >(rng[i], rng[j], rng[k]);
  }
  {
    int a1[] = {1, 3, 7, 9, 10};
    int a2[] = {0, 2, 4, 5, 6, 8, 11};
    typedef test_allocator<int> A;
    std::deque<int, A> c1(a1, a1 + sizeof(a1) / sizeof(a1[0]), A(1, 1));
    std::deque<int, A> c2(a2, a2 + sizeof(a2) / sizeof(a2[0]), A(1, 2));
    swap(c1, c2);
    assert((c1 == std::deque<int, A>(a2, a2 + sizeof(a2) / sizeof(a2[0]))));
    assert(c1.get_allocator().get_id() == 1);
    assert((c2 == std::deque<int, A>(a1, a1 + sizeof(a1) / sizeof(a1[0]))));
    assert(c2.get_allocator().get_id() == 2);
    LIBCPP_ASSERT(is_double_ended_contiguous_container_asan_correct(c1));
    LIBCPP_ASSERT(is_double_ended_contiguous_container_asan_correct(c2));
  }
  {
    int a1[] = {1, 3, 7, 9, 10};
    int a2[] = {0, 2, 4, 5, 6, 8, 11};
    typedef other_allocator<int> A;
    std::deque<int, A> c1(a1, a1 + sizeof(a1) / sizeof(a1[0]), A(1));
    std::deque<int, A> c2(a2, a2 + sizeof(a2) / sizeof(a2[0]), A(2));
    swap(c1, c2);
    assert((c1 == std::deque<int, A>(a2, a2 + sizeof(a2) / sizeof(a2[0]))));
    assert(c1.get_allocator() == A(2));
    assert((c2 == std::deque<int, A>(a1, a1 + sizeof(a1) / sizeof(a1[0]))));
    assert(c2.get_allocator() == A(1));
    LIBCPP_ASSERT(is_double_ended_contiguous_container_asan_correct(c1));
    LIBCPP_ASSERT(is_double_ended_contiguous_container_asan_correct(c2));
  }
#if TEST_STD_VER >= 11
  {
    int rng[]   = {0, 1, 2, 3, 1023, 1024, 1025, 2047, 2048, 2049};
    const int N = sizeof(rng) / sizeof(rng[0]);
    for (int i = 0; i < N; ++i)
      for (int j = 0; j < N; ++j)
        for (int k = 0; k < N; ++k)
          testN<std::deque<int, min_allocator<int>> >(rng[i], rng[j], rng[k]);
  }
  {
    int a1[] = {1, 3, 7, 9, 10};
    int a2[] = {0, 2, 4, 5, 6, 8, 11};
    typedef min_allocator<int> A;
    std::deque<int, A> c1(a1, a1 + sizeof(a1) / sizeof(a1[0]), A());
    std::deque<int, A> c2(a2, a2 + sizeof(a2) / sizeof(a2[0]), A());
    swap(c1, c2);
    assert((c1 == std::deque<int, A>(a2, a2 + sizeof(a2) / sizeof(a2[0]))));
    assert(c1.get_allocator() == A());
    assert((c2 == std::deque<int, A>(a1, a1 + sizeof(a1) / sizeof(a1[0]))));
    assert(c2.get_allocator() == A());
    LIBCPP_ASSERT(is_double_ended_contiguous_container_asan_correct(c1));
    LIBCPP_ASSERT(is_double_ended_contiguous_container_asan_correct(c2));
  }
#endif

  return 0;
}