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//
// System.IntPtr.cs
//
// Author:
// Miguel de Icaza (miguel@ximian.com)
//
// Maintainer:
// Michael Lambert, michaellambert@email.com
//
// (C) Ximian, Inc. http://www.ximian.com
//
// Remarks:
// Requires '/unsafe' compiler option. This class uses void*,
// 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.
//
// FIXME: How do you specify a native int in C#? I am going to have to do some figuring out
//
//
// Copyright (C) 2004 Novell, Inc (http://www.novell.com)
//
// Permission is hereby granted, free of charge, to any person obtaining
// a copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to
// permit persons to whom the Software is furnished to do so, subject to
// the following conditions:
//
// The above copyright notice and this permission notice shall be
// included in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
//
using System.Globalization;
using System.Runtime.Serialization;
#if NET_2_0
using System.Runtime.ConstrainedExecution;
#endif
namespace System
{
[Serializable]
public unsafe struct IntPtr : ISerializable
{
private void *value;
public static readonly IntPtr Zero;
public IntPtr (int i32)
{
value = (void *) i32;
}
public IntPtr (long i64)
{
if (((i64 > Int32.MaxValue) || (i64 < Int32.MinValue)) && (IntPtr.Size < 8)) {
throw new OverflowException (
Locale.GetText ("This isn't a 64bits machine."));
}
value = (void *) i64;
}
[CLSCompliant (false)]
unsafe public IntPtr (void *ptr)
{
value = ptr;
}
private IntPtr (SerializationInfo info, StreamingContext context)
{
long savedValue = info.GetInt64 ("value");
value = (void *) savedValue;
}
public static int Size {
#if NET_2_0
[ReliabilityContractAttribute (Consistency.WillNotCorruptState, Cer.Success)]
#endif
get {
return sizeof (void *);
}
}
void ISerializable.GetObjectData (SerializationInfo info, StreamingContext context)
{
if (info == null)
throw new ArgumentNullException ("info");
info.AddValue ("value", (long) value);
}
public override bool Equals (object o)
{
if (!(o is System.IntPtr))
return false;
return ((IntPtr) o).value == value;
}
public override int GetHashCode ()
{
return (int) value;
}
#if NET_2_0
[ReliabilityContractAttribute (Consistency.WillNotCorruptState, Cer.Success)]
#endif
public int ToInt32 ()
{
return (int) value;
}
#if NET_2_0
[ReliabilityContractAttribute (Consistency.WillNotCorruptState, Cer.Success)]
#endif
public long ToInt64 ()
{
return (long) value;
}
[CLSCompliant (false)]
#if NET_2_0
[ReliabilityContractAttribute (Consistency.WillNotCorruptState, Cer.Success)]
#endif
unsafe public void *ToPointer ()
{
return value;
}
override public string ToString ()
{
if (Size == 4)
return ((int) value).ToString ();
else
return ((long) value).ToString ();
}
#if NET_2_0
[ReliabilityContractAttribute (Consistency.WillNotCorruptState, Cer.Success)]
#endif
public static bool operator == (IntPtr a, IntPtr b)
{
return (a.value == b.value);
}
#if NET_2_0
[ReliabilityContractAttribute (Consistency.WillNotCorruptState, Cer.Success)]
#endif
public static bool operator != (IntPtr a, IntPtr b)
{
return (a.value != b.value);
}
#if NET_2_0
[ReliabilityContractAttribute (Consistency.WillNotCorruptState, Cer.Success)]
#endif
public static explicit operator IntPtr (int value)
{
return new IntPtr (value);
}
#if NET_2_0
[ReliabilityContractAttribute (Consistency.WillNotCorruptState, Cer.Success)]
#endif
public static explicit operator IntPtr (long value)
{
return new IntPtr (value);
}
#if NET_2_0
[ReliabilityContractAttribute (Consistency.WillNotCorruptState, Cer.Success)]
#endif
[CLSCompliant (false)]
unsafe public static explicit operator IntPtr (void *value)
{
return new IntPtr (value);
}
public static explicit operator int (IntPtr value)
{
return (int) value.value;
}
public static explicit operator long (IntPtr value)
{
return (long) value.value;
}
[CLSCompliant (false)]
unsafe public static explicit operator void * (IntPtr value)
{
return value.value;
}
}
}
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