// -*- C++ -*-
//===----------------------------- map ------------------------------------===//
//
// 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
//
//===----------------------------------------------------------------------===//

#ifndef _LIBCPP_MAP
#define _LIBCPP_MAP

/*

    map synopsis

namespace std
{

template <class Key, class T, class Compare = less<Key>,
          class Allocator = allocator<pair<const Key, T>>>
class map
{
public:
    // types:
    typedef Key                                      key_type;
    typedef T                                        mapped_type;
    typedef pair<const key_type, mapped_type>        value_type;
    typedef Compare                                  key_compare;
    typedef Allocator                                allocator_type;
    typedef typename allocator_type::reference       reference;
    typedef typename allocator_type::const_reference const_reference;
    typedef typename allocator_type::pointer         pointer;
    typedef typename allocator_type::const_pointer   const_pointer;
    typedef typename allocator_type::size_type       size_type;
    typedef typename allocator_type::difference_type difference_type;

    typedef implementation-defined                   iterator;
    typedef implementation-defined                   const_iterator;
    typedef std::reverse_iterator<iterator>          reverse_iterator;
    typedef std::reverse_iterator<const_iterator>    const_reverse_iterator;
    typedef unspecified                              node_type;              // C++17
    typedef INSERT_RETURN_TYPE<iterator, node_type>  insert_return_type;     // C++17

    class value_compare
        : public binary_function<value_type, value_type, bool>
    {
        friend class map;
    protected:
        key_compare comp;

        value_compare(key_compare c);
    public:
        bool operator()(const value_type& x, const value_type& y) const;
    };

    // construct/copy/destroy:
    map()
        noexcept(
            is_nothrow_default_constructible<allocator_type>::value &&
            is_nothrow_default_constructible<key_compare>::value &&
            is_nothrow_copy_constructible<key_compare>::value);
    explicit map(const key_compare& comp);
    map(const key_compare& comp, const allocator_type& a);
    template <class InputIterator>
        map(InputIterator first, InputIterator last,
            const key_compare& comp = key_compare());
    template <class InputIterator>
        map(InputIterator first, InputIterator last,
            const key_compare& comp, const allocator_type& a);
    map(const map& m);
    map(map&& m)
        noexcept(
            is_nothrow_move_constructible<allocator_type>::value &&
            is_nothrow_move_constructible<key_compare>::value);
    explicit map(const allocator_type& a);
    map(const map& m, const allocator_type& a);
    map(map&& m, const allocator_type& a);
    map(initializer_list<value_type> il, const key_compare& comp = key_compare());
    map(initializer_list<value_type> il, const key_compare& comp, const allocator_type& a);
    template <class InputIterator>
        map(InputIterator first, InputIterator last, const allocator_type& a)
            : map(first, last, Compare(), a) {}  // C++14
    map(initializer_list<value_type> il, const allocator_type& a)
        : map(il, Compare(), a) {}  // C++14
   ~map();

    map& operator=(const map& m);
    map& ope                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     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