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//------------------------------------------------------------------------------
//
// System.UIntPtr.cs
//
// Copyright (C) 2001 Michael Lambert, All Rights Reserved
//
// Author: Michael Lambert, michaellambert@email.com
// Created: Thu 07/31/2001
//
// Remarks: Requires '/unsafe' compiler option. This class uses void*,
// ulong, and uint in overloaded constructors, conversion, and
// cast members in the public interface. Using pointers is not
// valid CLS and the methods in question have been marked with
// the CLSCompliant attribute that avoid compiler warnings.
//
//------------------------------------------------------------------------------
using System.Runtime.Serialization;
using System.Runtime.InteropServices;
namespace System
{
[
StructLayout(LayoutKind.Auto),
CLSCompliant(false)
]
[Serializable]
public unsafe struct UIntPtr : ISerializable
{
public static readonly UIntPtr Zero = new UIntPtr(0);
private void* _pointer;
[
CLSCompliant(false)
]
public UIntPtr(ulong value)
{
_pointer = (void*) value;
}
[
CLSCompliant(false)
]
public UIntPtr(uint value)
{
_pointer = (void*)value;
}
[
CLSCompliant(false)
]
public unsafe UIntPtr(void* value)
{
_pointer = value;
}
public override bool Equals(object obj)
{
if( obj is UIntPtr )
{
UIntPtr obj2 = (UIntPtr)obj;
return this._pointer == obj2._pointer;
}
return false;
}
public override int GetHashCode()
{
return (int)_pointer;
}
[
CLSCompliant(false)
]
public uint ToUInt32()
{
return (uint) _pointer;
}
[
CLSCompliant(false)
]
public ulong ToUInt64()
{
return (ulong) _pointer;
}
[
CLSCompliant(false)
]
public unsafe void* ToPointer()
{
return _pointer;
}
public override string ToString()
{
return ((uint) _pointer).ToString();
}
// Interface ISerializable
void ISerializable.GetObjectData(SerializationInfo info, StreamingContext context)
{
if( info == null )
throw new ArgumentNullException( "info" );
// if( context == null ) -- context is struct can't be null.
// throw new ArgumentNullException( "context" );
info.AddValue("pointer", (ulong)_pointer);
}
public static bool operator ==(UIntPtr value1, UIntPtr value2)
{
return value1._pointer == value2._pointer;
}
public static bool operator !=(UIntPtr value1, UIntPtr value2)
{
return value1._pointer != value2._pointer;
}
[
CLSCompliant(false)
]
public static explicit operator ulong(UIntPtr value)
{
return (ulong)value._pointer;
}
[
CLSCompliant(false)
]
public static explicit operator uint(UIntPtr value)
{
return (uint)value._pointer;
}
[
CLSCompliant(false)
]
public static explicit operator UIntPtr(ulong value)
{
return new UIntPtr(value);
}
[
CLSCompliant(false)
]
public unsafe static explicit operator UIntPtr(void* value)
{
return new UIntPtr(value);
}
[
CLSCompliant(false)
]
public unsafe static explicit operator void*(UIntPtr value)
{
return value.ToPointer();
}
[
CLSCompliant(false)
]
public static explicit operator UIntPtr(uint value)
{
return new UIntPtr(value);
}
public static int Size
{
get
{
return sizeof(void*);
}
}
}
} // Namespace
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