Pointer.cs source code in C# .NET

Source code for the .NET framework in C#

                        
Code:

                         / DotNET / DotNET / 8.0 / untmp / whidbey / REDBITS / ndp / clr / src / BCL / System / Reflection / Pointer.cs / 1 / Pointer.cs
                        

                        
                            // ==++== 
//
//   Copyright (c) Microsoft Corporation.  All rights reserved.
//
// ==--== 
////////////////////////////////////////////////////////////////////////////////
// 
// This is a wrapper class for Pointers 
//
// 
//
//
namespace System.Reflection {
    using System; 
    using CultureInfo = System.Globalization.CultureInfo;
    using System.Runtime.Serialization; 
 
    [CLSCompliant(false)]
    [Serializable] 
[System.Runtime.InteropServices.ComVisible(true)]
 	public sealed class Pointer: ISerializable {
		unsafe private void* _ptr;
		private Type _ptrType; 

		private Pointer() {} 
 
 		private unsafe Pointer(SerializationInfo info, StreamingContext context)
		{ 
 		    _ptr = ((IntPtr)(info.GetValue("_ptr", typeof(IntPtr)))).ToPointer();
 		    _ptrType = (Type)info.GetValue("_ptrType", typeof(Type));
		}
 
 		// This method will box an pointer.  We save both the
		//	value and the type so we can access it from the native code 
		//	during an Invoke. 
		public static unsafe Object Box(void *ptr,Type type) {
 			if (type == null) 
				throw new ArgumentNullException("type");
 			if (!type.IsPointer)
 				throw new ArgumentException(Environment.GetResourceString("Arg_MustBePointer"),"ptr");
 
			Pointer x = new Pointer();
 			x._ptr = ptr; 
			x._ptrType = type; 
			return x;
		} 

 		// Returned the stored pointer.
		public static unsafe void* Unbox(Object ptr) {
 			if (!(ptr is Pointer)) 
 				throw new ArgumentException(Environment.GetResourceString("Arg_MustBePointer"),"ptr");
			return ((Pointer)ptr)._ptr; 
 		} 
	
		internal Type GetPointerType() { 
			return _ptrType;
 		}

		internal unsafe Object GetPointerValue() { 
 			return (IntPtr)_ptr;
 		} 
 

 
        unsafe void ISerializable.GetObjectData(SerializationInfo info, StreamingContext context) {
            info.AddValue("_ptr", new IntPtr(_ptr));
            info.AddValue("_ptrType", _ptrType);
        } 
    }
}

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