public static bool DynamicCast <T> (ref T dst, object src, Type srcType, DynamicCastFlags flags = DynamicCastFlags.None)
{
if (src == null)
{
return(false);
}
if (srcType == null)
throw new ArgumentNullException(nameof(srcType)); }
public static bool DynamicCast <T> (ref T dst, object src, Type srcType, DynamicCastFlags flags = DynamicCastFlags.None)
{
if (src == null)
{
return(false);
}
if (srcType == null)
{
throw new ArgumentNullException(nameof(srcType));
}
object o = null;
if (DynamicCast(ref o, src, srcType, typeof(T), flags))
{
dst = (T)o;
return(true);
}
return(false);
}
unsafe static bool DynamicCast(ref object dest, object src, Type srcType, Type destType, DynamicCastFlags flags)
{
var destPtr = IntPtr.Zero;
var srcPtr = IntPtr.Zero;
var srcMetaType = StructMarshal.Marshaler.Metatypeof(srcType);
var destMetaType = StructMarshal.Marshaler.Metatypeof(destType);
if (src is ISwiftObject)
{
srcPtr = ((ISwiftObject)src).SwiftObject;
}
else
{
var srcData = stackalloc byte [StructMarshal.Marshaler.Sizeof(srcType)];
srcPtr = new IntPtr(srcData);
StructMarshal.Marshaler.ToSwift(src, srcPtr);
}
int size = StructMarshal.Marshaler.Sizeof(destType);
if (size > 0)
{
var destData = stackalloc byte [size];
destPtr = new IntPtr(destData);
}
if (swift_dynamicCast(destPtr, srcPtr, srcMetaType, destMetaType, (nint)(int)flags))
{
StructMarshal.Marshaler.ReleaseSwiftPointer(srcType, srcPtr);
if (size > 0)
{
if (typeof(ISwiftObject).IsAssignableFrom(destType))
{
var objptr = Marshal.ReadIntPtr(destPtr);
dest = SwiftObjectRegistry.Registry.CSObjectForSwiftObject(objptr, destType);
}
else
{
dest = StructMarshal.Marshaler.ToNet(destPtr, destType);
}
return(true);
}
}
return(false);
}
