///////////////////////////////////////////////////////////////////////////////
//
//  Copyright (c) Microsoft Corporation.  All rights reserved.
//

using System;
using Microsoft.Contracts;

namespace System.Collections
{

    public class ArrayList
    {

        public object this [int index]
        {
          [Pure]
          get
            requires index >= 0 otherwise ArgumentOutOfRangeException;
            requires index < this.Count otherwise ArgumentOutOfRangeException;
          set
            requires index >= 0 otherwise ArgumentOutOfRangeException;
            requires index < this.Count otherwise ArgumentOutOfRangeException;
        }

        public int Capacity
        {
          [Pure]
          get
			ensures result >= 0;
          set
			requires value >= this.Count otherwise ArgumentOutOfRangeException;
        }

        public int Count
        {
          [Pure]
          get
			ensures result >= 0;
        }

        public object SyncRoot
        {
          [Pure]
          get;
        }

        public bool IsSynchronized
        {
          [Pure]
          get;
        }

        public bool IsFixedSize
        {
          [Pure]
          get;
        }

        public bool IsReadOnly
        {
          [Pure]
          get;
        }

        public void TrimToSize ()
			requires ! this.IsReadOnly otherwise NotSupportedException;
			requires ! this.IsFixedSize otherwise NotSupportedException;

        public Array! ToArray (Type! type)
            requires type != null otherwise ArgumentNullException;

        public object[]! ToArray ();

        public static ArrayList! Synchronized (ArrayList! list)
            requires list != null otherwise ArgumentNullException;
            ensures result.IsSynchronized;

        public static IList! Synchronized (IList! list)
            requires list != null otherwise ArgumentNullException;
            ensures result.IsSynchronized;

        public void Sort (int index, int count, IComparer comparer)
            requires index >= 0 otherwise ArgumentOutOfRangeException;
            requires count >= 0 otherwise ArgumentOutOfRangeException;
            requires index + count <= Count otherwise ArgumentException;
			requires ! this.IsReadOnly otherwise NotSupportedException;

        public void Sort (IComparer comparer)
			requires ! this.IsReadOnly otherwise NotSupportedException;

        public void Sort ()
			requires ! this.IsReadOnly otherwise NotSupportedException;

        public ArrayList GetRange (int index, int count)
            requires index >= 0 otherwise ArgumentOutOfRangeException;
            requires count >= 0 otherwise ArgumentOutOfRangeException;
            requires index + count <= Count otherwise ArgumentException;

        public void SetRange (int index, ICollection! c)
            requires c != null otherwise ArgumentNullException;
            requires index >= 0 otherwise ArgumentOutOfRangeException;
            requires index + c.Count <= Count otherwise ArgumentOutOfRangeException;
			requires ! this.IsReadOnly otherwise NotSupportedException;

        public void Reverse (int index, int count)
            requires index >= 0 otherwise ArgumentOutOfRangeException;
            requires count >= 0 otherwise ArgumentOutOfRangeException;
            requires index + count <= Count otherwise ArgumentException;
			requires ! this.IsReadOnly otherwise NotSupportedException;

        public void Reverse ()
			requires ! this.IsReadOnly otherwise NotSupportedException;

        public static ArrayList Repeat (object value, int count)
            requires count >= 0 otherwise ArgumentOutOfRangeException;

        public void RemoveRange (int index, int count)
            requires index >= 0 otherwise ArgumentOutOfRangeException;
            requires count >= 0 otherwise ArgumentOutOfRangeException;
            requires index + count <= Count otherwise ArgumentException;
			requires ! this.IsReadOnly otherwise NotSupportedException;
			requires ! this.IsFixedSize otherwise NotSupportedException;

        public void RemoveAt (int index)
            requires index >= 0 otherwise ArgumentOutOfRangeException;
            requires index < Count otherwise ArgumentOutOfRangeException;
			requires ! this.IsReadOnly otherwise NotSupportedException;
			requires ! this.IsFixedSize otherwise NotSupportedException;

        public void Remove (object obj)
			requires ! this.IsReadOnly otherwise NotSupportedException;
			requires ! this.IsFixedSize otherwise NotSupportedException;

        public static ArrayList! ReadOnly (ArrayList! list)
            requires list != null otherwise ArgumentNullException;
            ensures result.IsReadOnly;

        public static IList! ReadOnly (IList! list)
            requires list != null otherwise ArgumentNullException;
            ensures result.IsReadOnly;

        public int LastIndexOf (object value, int startIndex, int count)
            requires 0 <= count otherwise ArgumentOutOfRangeException;
            requires 0 <= startIndex otherwise ArgumentOutOfRangeException;
            requires startIndex + count <= Count otherwise ArgumentOutOfRangeException;
            ensures -1 <= result && result < this.Count;

        public int LastIndexOf (object value, int startIndex)
            requires startIndex >= 0 otherwise ArgumentOutOfRangeException;
            requires startIndex < this.Count otherwise ArgumentOutOfRangeException;
            ensures -1 <= result && result < this.Count;

        public int LastIndexOf (object value)
            ensures -1 <= result && result < this.Count;

        public void InsertRange (int index, ICollection! c)
            requires c != null otherwise ArgumentNullException;
            requires index >= 0 otherwise ArgumentOutOfRangeException;
            requires index <= Count otherwise ArgumentOutOfRangeException;
			requires ! this.IsReadOnly otherwise NotSupportedException;
			requires ! this.IsFixedSize otherwise NotSupportedException;

        public void Insert (int index, object value)
            requires index >= 0 otherwise ArgumentOutOfRangeException;
            requires index <= Count otherwise ArgumentOutOfRangeException;
			requires ! this.IsReadOnly otherwise NotSupportedException;
			requires ! this.IsFixedSize otherwise NotSupportedException;

        public int IndexOf (object value, int startIndex, int count)
            requires 0 <= count otherwise ArgumentOutOfRangeException;
            requires 0 <= startIndex otherwise ArgumentOutOfRangeException;
            requires startIndex + count <= Count otherwise ArgumentOutOfRangeException;
            ensures -1 <= result && result < this.Count;

        public int IndexOf (object value, int startIndex)
            requires startIndex >= 0 otherwise ArgumentOutOfRangeException;
            requires startIndex < this.Count otherwise ArgumentOutOfRangeException;
            ensures -1 <= result && result < this.Count;

        public int IndexOf (object value)
            ensures -1 <= result && result < this.Count;

        public IEnumerator GetEnumerator (int index, int count)
            requires index >= 0 otherwise ArgumentOutOfRangeException;
            requires count >= 0 otherwise ArgumentOutOfRangeException;

        public IEnumerator GetEnumerator ();

        public static ArrayList FixedSize (ArrayList! list)
            requires list != null otherwise ArgumentNullException;
            ensures result.IsFixedSize;

        public static IList FixedSize (IList! list)
            requires list != null otherwise ArgumentNullException;
            ensures result.IsFixedSize;

        public void CopyTo (int index, Array! array, int arrayIndex, int count)
			requires array != null otherwise ArgumentNullException;
			requires array.Rank == 1 otherwise ArgumentException;
            requires index >= 0 otherwise ArgumentOutOfRangeException;
            requires index < this.Count otherwise ArgumentOutOfRangeException;
            requires arrayIndex >= 0 otherwise ArgumentOutOfRangeException;
            requires arrayIndex < array.Length otherwise ArgumentOutOfRangeException;
            requires count >= 0 otherwise ArgumentOutOfRangeException;
            requires index + count <= Count otherwise ArgumentException;
            requires  arrayIndex + count <= array.Length otherwise ArgumentException;

        public void CopyTo (Array! array, int arrayIndex)
			requires array != null otherwise ArgumentNullException;
			requires array.Rank == 1 otherwise ArgumentException;
            requires arrayIndex >= 0 otherwise ArgumentOutOfRangeException;
            requires arrayIndex < this.Count otherwise ArgumentOutOfRangeException;

        public void CopyTo (Array! array)
			requires array != null otherwise ArgumentNullException;
			requires array.Rank == 1 otherwise ArgumentException;

        public bool Contains (object item);

        public object Clone ();

        public void Clear ()
			requires ! this.IsReadOnly otherwise NotSupportedException;
			requires ! this.IsFixedSize otherwise NotSupportedException;

        public int BinarySearch (object value, IComparer comparer)
            ensures -1 <= result && result < this.Count;

        public int BinarySearch (object value)
            ensures -1 <= result && result < this.Count;

        public int BinarySearch (int index, int count, object value, IComparer comparer)
            requires index >= 0 otherwise ArgumentOutOfRangeException;
            requires count >= 0 otherwise ArgumentOutOfRangeException;
            requires index + count <= Count otherwise ArgumentException;
            ensures -1 <= result && result < this.Count;

        public void AddRange (ICollection! c)
			requires c != null otherwise ArgumentNullException;
			requires ! this.IsReadOnly otherwise NotSupportedException;
			requires ! this.IsFixedSize otherwise NotSupportedException;

        public int Add (object value)
			requires ! this.IsReadOnly otherwise NotSupportedException;
			requires ! this.IsFixedSize otherwise NotSupportedException;

        public static ArrayList Adapter (IList! list)
            requires list != null otherwise ArgumentNullException;

        public ArrayList (ICollection! c)
            requires c != null otherwise ArgumentNullException;
            ensures this.Capacity == c.Count;
            ensures this.Count == c.Count;

        public ArrayList (int capacity)
            requires capacity >= 0 otherwise ArgumentOutOfRangeException;
            ensures this.Capacity == capacity;

        public ArrayList ()
			ensures this.Count == 0;
			ensures this.Capacity == 16; // stated in the documentation
    }
}