public void WriteAndReadDouble()
{
// Arrange
const double originalValue = 3.141592;
LocalUnmanagedMemory local;
double ret;
// Act
using (local = new LocalUnmanagedMemory(MarshalType<double>.Size))
{
local.Write(originalValue);
ret = local.Read<double>();
}
// Assert
Assert.AreEqual(originalValue, ret, "Both values aren't equal.");
Assert.AreEqual(IntPtr.Zero, local.Address);
}
public void WriteAndReadCustomStruct()
{
// Arrange
var customStruct = Resources.CustomStruct;
LocalUnmanagedMemory local;
Point ret;
// Act
using (local = new LocalUnmanagedMemory(MarshalType <Point> .Size))
{
local.Write(customStruct);
ret = local.Read <Point>();
}
// Assert
Assert.AreEqual(customStruct, ret, "Both structures aren't equal.");
Assert.AreEqual(IntPtr.Zero, local.Address);
}
public void WriteAndReadCustomStruct()
{
// Arrange
var customStruct = Resources.CustomStruct;
LocalUnmanagedMemory local;
Point ret;
// Act
using (local = new LocalUnmanagedMemory(MarshalType<Point>.Size))
{
local.Write(customStruct);
ret = local.Read<Point>();
}
// Assert
Assert.AreEqual(customStruct, ret, "Both structures aren't equal.");
Assert.AreEqual(IntPtr.Zero, local.Address);
}
public void WriteAndReadDouble()
{
// Arrange
const double originalValue = 3.141592;
LocalUnmanagedMemory local;
double ret;
// Act
using (local = new LocalUnmanagedMemory(MarshalType <double> .Size))
{
local.Write(originalValue);
ret = local.Read <double>();
}
// Assert
Assert.AreEqual(originalValue, ret, "Both values aren't equal.");
Assert.AreEqual(IntPtr.Zero, local.Address);
}
/// <summary>
/// Marshals an array of byte to a managed object.
/// </summary>
/// <param name="byteArray">The array of bytes corresponding to a managed object.</param>
/// <param name="index">[Optional] Where to start the conversion of bytes to the managed object.</param>
/// <returns>A managed object.</returns>
public static T ByteArrayToObject(byte[] byteArray, int index = 0)
{
// We'll tried to avoid marshalling as it really slows the process
// First, check if the type can be converted without marshalling
switch (TypeCode)
{
case TypeCode.Object:
if (IsIntPtr)
{
switch (byteArray.Length)
{
case 1:
return((T)(object)new IntPtr(BitConverter.ToInt32(new byte[] { byteArray[index], 0x0, 0x0, 0x0 }, index)));
case 2:
return((T)(object)new IntPtr(BitConverter.ToInt32(new byte[] { byteArray[index], byteArray[index + 1], 0x0, 0x0 }, index)));
case 4:
return((T)(object)new IntPtr(BitConverter.ToInt32(byteArray, index)));
case 8:
return((T)(object)new IntPtr(BitConverter.ToInt64(byteArray, index)));
}
}
break;
case TypeCode.Boolean:
return((T)(object)BitConverter.ToBoolean(byteArray, index));
case TypeCode.Byte:
return((T)(object)byteArray[index]);
case TypeCode.Char:
return((T)(object)Encoding.UTF8.GetChars(byteArray)[index]);
case TypeCode.Double:
return((T)(object)BitConverter.ToDouble(byteArray, index));
case TypeCode.Int16:
return((T)(object)BitConverter.ToInt16(byteArray, index));
case TypeCode.Int32:
return((T)(object)BitConverter.ToInt32(byteArray, index));
case TypeCode.Int64:
return((T)(object)BitConverter.ToInt64(byteArray, index));
case TypeCode.Single:
return((T)(object)BitConverter.ToSingle(byteArray, index));
case TypeCode.String:
throw new InvalidCastException("This method doesn't support string conversion.");
case TypeCode.UInt16:
return((T)(object)BitConverter.ToUInt16(byteArray, index));
case TypeCode.UInt32:
return((T)(object)BitConverter.ToUInt32(byteArray, index));
case TypeCode.UInt64:
return((T)(object)BitConverter.ToUInt64(byteArray, index));
}
// Allocate a block of unmanaged memory
using (var unmanaged = new LocalUnmanagedMemory(Size))
{
// Write the array of bytes inside the unmanaged memory
unmanaged.Write(byteArray, index);
// Return a managed object created from the block of unmanaged memory
return(unmanaged.Read <T>());
}
}
/// <summary>
/// Marshals a managed object to an array of bytes.
/// </summary>
/// <param name="obj">The object to marshal.</param>
/// <returns>A array of bytes corresponding to the managed object.</returns>
public static byte[] ObjectToByteArray(T obj)
{
// We'll tried to avoid marshalling as it really slows the process
// First, check if the type can be converted without marhsalling
switch (TypeCode)
{
case TypeCode.Object:
if (IsIntPtr)
{
switch (Size)
{
case 4:
return(BitConverter.GetBytes(((IntPtr)(object)obj).ToInt32()));
case 8:
return(BitConverter.GetBytes(((IntPtr)(object)obj).ToInt64()));
}
}
break;
case TypeCode.Boolean:
return(BitConverter.GetBytes((bool)(object)obj));
case TypeCode.Char:
return(Encoding.UTF8.GetBytes(new[] { (char)(object)obj }));
case TypeCode.Double:
return(BitConverter.GetBytes((double)(object)obj));
case TypeCode.Int16:
return(BitConverter.GetBytes((short)(object)obj));
case TypeCode.Int32:
return(BitConverter.GetBytes((int)(object)obj));
case TypeCode.Int64:
return(BitConverter.GetBytes((long)(object)obj));
case TypeCode.Single:
return(BitConverter.GetBytes((float)(object)obj));
case TypeCode.String:
throw new InvalidCastException("This method doesn't support string conversion.");
case TypeCode.UInt16:
return(BitConverter.GetBytes((ushort)(object)obj));
case TypeCode.UInt32:
return(BitConverter.GetBytes((uint)(object)obj));
case TypeCode.UInt64:
return(BitConverter.GetBytes((ulong)(object)obj));
}
// Check if it's not a common type
// Allocate a block of unmanaged memory
using (var unmanaged = new LocalUnmanagedMemory(Size))
{
// Write the object inside the unmanaged memory
unmanaged.Write(obj);
// Return the content of the block of unmanaged memory
return(unmanaged.Read());
}
}
/// <summary>
/// Marshals an array of byte to a managed object.
/// </summary>
/// <param name="byteArray">The array of bytes corresponding to a managed object.</param>
/// <returns>A managed object.</returns>
public unsafe static T ByteArrayToObject(byte[] byteArray)
{
var requiresMarshal = MarshalCache <T> .TypeRequiresMarshal;
var size = requiresMarshal ? MarshalCache <T> .Size : Unsafe.SizeOf <T>();
fixed(byte *b = byteArray)
{
if (requiresMarshal)
{
return(Marshal.PtrToStructure <T>(new IntPtr(b)));
}
return(Unsafe.Read <T>(b));
}
#if false
// We'll tried to avoid marshalling as it really slows the process
// First, check if the type can be converted without marhsalling
switch (TypeCode)
{
case TypeCode.Object:
if (IsIntPtr)
{
switch (byteArray.Length)
{
case 1:
return
((T)
(object)
new IntPtr(BitConverter.ToInt32(new byte[] { byteArray[0], 0x0, 0x0, 0x0 }, 0)));
case 2:
return
((T)
(object)
new IntPtr(
BitConverter.ToInt32(new byte[] { byteArray[0], byteArray[1], 0x0, 0x0 },
0)));
case 4:
return((T)(object)new IntPtr(BitConverter.ToInt32(byteArray, 0)));
case 8:
return((T)(object)new IntPtr(BitConverter.ToInt64(byteArray, 0)));
}
}
break;
case TypeCode.Boolean:
return((T)(object)BitConverter.ToBoolean(byteArray, 0));
case TypeCode.Byte:
return((T)(object)byteArray[0]);
case TypeCode.Char:
return((T)(object)Encoding.UTF8.GetChars(byteArray)[0]); //BitConverter.ToChar(byteArray, 0);
case TypeCode.Double:
return((T)(object)BitConverter.ToDouble(byteArray, 0));
case TypeCode.Int16:
return((T)(object)BitConverter.ToInt16(byteArray, 0));
case TypeCode.Int32:
return((T)(object)BitConverter.ToInt32(byteArray, 0));
case TypeCode.Int64:
return((T)(object)BitConverter.ToInt64(byteArray, 0));
case TypeCode.Single:
return((T)(object)BitConverter.ToSingle(byteArray, 0));
case TypeCode.String:
throw new InvalidCastException("This method doesn't support string conversion.");
case TypeCode.UInt16:
return((T)(object)BitConverter.ToUInt16(byteArray, 0));
case TypeCode.UInt32:
return((T)(object)BitConverter.ToUInt32(byteArray, 0));
case TypeCode.UInt64:
return((T)(object)BitConverter.ToUInt64(byteArray, 0));
}
// Check if it's not a common type
// Allocate a block of unmanaged memory
using (var unmanaged = new LocalUnmanagedMemory(Size))
{
// Write the array of bytes inside the unmanaged memory
unmanaged.Write(byteArray);
// Return a managed object created from the block of unmanaged memory
return(unmanaged.Read <T>());
}
#endif
}
/// <summary>
/// Marshals an array of byte to a managed object.
/// </summary>
/// <param name="byteArray">The array of bytes corresponding to a managed object.</param>
/// <returns>A managed object.</returns>
public static T ByteArrayToObject(byte[] byteArray)
{
// We'll tried to avoid marshalling as it really slows the process
// First, check if the type can be converted without marshalling
switch (TypeCode)
{
case TypeCode.Object:
if (IsIntPtr)
{
switch (byteArray.Length)
{
case 1:
return
((T)
(object)
new IntPtr(BitConverter.ToInt32(new byte[] { byteArray[0], 0x0, 0x0, 0x0 }, 0)));
case 2:
return
((T)
(object)
new IntPtr(
BitConverter.ToInt32(new byte[] { byteArray[0], byteArray[1], 0x0, 0x0 },
0)));
case 4:
return((T)(object)new IntPtr(BitConverter.ToInt32(byteArray, 0)));
case 8:
return((T)(object)new IntPtr(BitConverter.ToInt64(byteArray, 0)));
}
}
break;
case TypeCode.Boolean:
return((T)(object)BitConverter.ToBoolean(byteArray, 0));
case TypeCode.Byte:
return((T)(object)byteArray[0]);
case TypeCode.Char:
return((T)(object)Encoding.UTF8.GetChars(byteArray)[0]); //BitConverter.ToChar(byteArray, 0);
case TypeCode.Double:
return((T)(object)BitConverter.ToDouble(byteArray, 0));
case TypeCode.Int16:
return((T)(object)BitConverter.ToInt16(byteArray, 0));
case TypeCode.Int32:
return((T)(object)BitConverter.ToInt32(byteArray, 0));
case TypeCode.Int64:
return((T)(object)BitConverter.ToInt64(byteArray, 0));
case TypeCode.Single:
return((T)(object)BitConverter.ToSingle(byteArray, 0));
case TypeCode.String:
throw new InvalidCastException("This method doesn't support string conversion.");
case TypeCode.UInt16:
return((T)(object)BitConverter.ToUInt16(byteArray, 0));
case TypeCode.UInt32:
return((T)(object)BitConverter.ToUInt32(byteArray, 0));
case TypeCode.UInt64:
return((T)(object)BitConverter.ToUInt64(byteArray, 0));
case TypeCode.Decimal:
return((T)(object)BitConverter.ToDouble(byteArray, 0));
case TypeCode.SByte:
return((T)(object)BitConverter.ToChar(byteArray, 0));
case TypeCode.DateTime:
throw new InvalidCastException(
"This method doesn't support DateTime conversion. Use .ToBinary() to store as Int64.");
case TypeCode.DBNull:
throw new InvalidCastException("This method doesn't support null conversion.");
case TypeCode.Empty:
throw new InvalidCastException("This method doesn't support empty object conversion.");
default:
throw new ArgumentOutOfRangeException();
}
// Check if it's not a common type
// Allocate a block of unmanaged memory
using var unmanaged = new LocalUnmanagedMemory(Size);
// Write the array of bytes inside the unmanaged memory
unmanaged.Write(byteArray);
// Return a managed object created from the block of unmanaged memory
return(unmanaged.Read <T>());
}
