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

// <memory>

// template <class OuterAlloc, class... InnerAllocs>
//   class scoped_allocator_adaptor

// typedef see below is_always_equal;

#include <scoped_allocator>
#include <type_traits>

#include "allocators.h"
#include "min_allocator.h"

int main()
{
    // sanity checks
    static_assert( (std::is_same<
            std::allocator_traits<A1<int>>::is_always_equal, std::false_type>::value
            ), "" );

    static_assert( (std::is_same<
            std::allocator_traits<min_allocator<int>>::is_always_equal, std::true_type>::value
            ), "" );

    // wrapping one allocator
    static_assert(
        (std::is_same<
            std::scoped_allocator_adaptor<A1<int>>::is_always_equal,
            std::allocator_traits<A1<int>>::is_always_equal
        >::value), "");

    // wrapping one allocator
    static_assert(
        (std::is_same<
            std::scoped_allocator_adaptor<min_allocator<int>>::is_always_equal,
            std::allocator_traits<min_allocator<int>>::is_always_equal
        >::value), "");

    // wrapping two allocators (check the values instead of the types)
    static_assert((
            std::scoped_allocator_adaptor<A1<int>, A2<int>>::is_always_equal::value ==
            ( std::allocator_traits<A1<int>>::is_always_equal::value &&
              std::allocator_traits<A2<int>>::is_always_equal::value)
        ), "");

    // wrapping two allocators (check the values instead of the types)
    static_assert((
            std::scoped_allocator_adaptor<A1<int>, min_allocator<int>>::is_always_equal::value ==
            ( std::allocator_traits<A1<int>>::is_always_equal::value &&
              std::allocator_traits<min_allocator<int>>::is_always_equal::value)
        ), "");


    // wrapping three allocators (check the values instead of the types)
    static_assert((
            std::scoped_allocator_adaptor<A1<int>, A2<int>, A3<int>>::is_always_equal::value ==
            ( std::allocator_traits<A1<int>>::is_always_equal::value &&
              std::allocator_traits<A2<int>>::is_always_equal::value &&
              std::allocator_traits<A3<int>>::is_always_equal::value)
        ), "");
}