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// ==++==
//
// Copyright (c) Microsoft Corporation. All rights reserved.
//
// ==--==
namespace System.Runtime.InteropServices {
using System;
using System.Runtime.CompilerServices;
using System.Runtime.Versioning;
[Serializable]
[System.Runtime.InteropServices.ComVisible(true)]
public struct ArrayWithOffset
{
//private ArrayWithOffset()
//{
// throw new Exception();
//}
[System.Security.SecuritySafeCritical] // auto-generated
public ArrayWithOffset(Object array, int offset)
{
m_array = array;
m_offset = offset;
m_count = 0;
m_count = CalculateCount();
}
public Object GetArray()
{
return m_array;
}
public int GetOffset()
{
return m_offset;
}
public override int GetHashCode()
{
return m_count + m_offset;
}
public override bool Equals(Object obj)
{
if (obj is ArrayWithOffset)
return Equals((ArrayWithOffset)obj);
else
return false;
}
public bool Equals(ArrayWithOffset obj)
{
return obj.m_array == m_array && obj.m_offset == m_offset && obj.m_count == m_count;
}
public static bool operator ==(ArrayWithOffset a, ArrayWithOffset b)
{
return a.Equals(b);
}
public static bool operator !=(ArrayWithOffset a, ArrayWithOffset b)
{
return !(a == b);
}
#if MONO
int CalculateCount()
{
Array a = m_array as Array;
if (a == null)
throw new ArgumentException ();
var total = a.Rank * a.Length;
return total - m_offset;
}
#else
[System.Security.SecurityCritical] // auto-generated
[ResourceExposure(ResourceScope.None)]
[MethodImplAttribute(MethodImplOptions.InternalCall)]
private extern int CalculateCount();
#endif
private Object m_array;
private int m_offset;
private int m_count;
}
}
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