// ==++==
//
//   Copyright (c) Microsoft Corporation.  All rights reserved.
//
// ==--==

using System;
using System.Diagnostics;
using System.Runtime.CompilerServices;

namespace System.Collections {
    // The Hashtable class represents a dictionary of associated keys and
    // values with constant lookup time.

    public class Hashtable : IDictionary, ICloneable
    {
        protected IHashCodeProvider hcp { get; set; }
        protected IComparer comparer { get; set; }

        public Hashtable();
        public Hashtable(int capacity);
        public Hashtable(int capacity, float loadFactor);
        public Hashtable(int capacity, float loadFactor, IHashCodeProvider hcp, IComparer comparer);
        public Hashtable(IHashCodeProvider hcp, IComparer comparer);
        public Hashtable(int capacity, IHashCodeProvider hcp, IComparer comparer);
        public Hashtable(IDictionary d);
        public Hashtable(IDictionary d, float loadFactor);
        public Hashtable(IDictionary d, IHashCodeProvider hcp, IComparer comparer);
        public Hashtable(IDictionary d, float loadFactor, IHashCodeProvider hcp, IComparer comparer);

        public virtual void Add(Object key, Object value);
        public virtual void Clear();
        public virtual Object Clone();
        public virtual bool Contains(Object key);
        public virtual bool ContainsKey(Object key);
        public virtual bool ContainsValue(Object value);
        public virtual void CopyTo(Array array, int arrayIndex);

        public virtual Object this[Object key] { get; set; }

        IEnumerator IEnumerable.GetEnumerator();
        public virtual IDictionaryEnumerator GetEnumerator();

        protected virtual int GetHash(Object key);

        public virtual bool IsReadOnly { get; }
        public virtual bool IsFixedSize { get; }
        public virtual bool IsSynchronized { get; }

        protected virtual bool KeyEquals(Object item, Object key);

        public virtual ICollection Keys { get; }
        public virtual ICollection Values { get; }

        public virtual void Remove(Object key);

        public virtual Object SyncRoot { get; }
        public virtual int Count { get; }

        public static Hashtable Synchronized(Hashtable table);
    }
}