private static unsafe bool UnboxAnyTypeCompare(EEType *pEEType, EEType *ptrUnboxToEEType)
{
if (TypeCast.AreTypesEquivalentInternal(pEEType, ptrUnboxToEEType))
{
return(true);
}
if (pEEType->CorElementType == ptrUnboxToEEType->CorElementType)
{
// Enum's and primitive types should pass the UnboxAny exception cases
// if they have an exactly matching cor element type.
switch (ptrUnboxToEEType->CorElementType)
{
case CorElementType.ELEMENT_TYPE_I1:
case CorElementType.ELEMENT_TYPE_U1:
case CorElementType.ELEMENT_TYPE_I2:
case CorElementType.ELEMENT_TYPE_U2:
case CorElementType.ELEMENT_TYPE_I4:
case CorElementType.ELEMENT_TYPE_U4:
case CorElementType.ELEMENT_TYPE_I8:
case CorElementType.ELEMENT_TYPE_U8:
case CorElementType.ELEMENT_TYPE_I:
case CorElementType.ELEMENT_TYPE_U:
return(true);
}
}
return(false);
}
private static unsafe bool UnboxAnyTypeCompare(EEType *pEEType, EEType *ptrUnboxToEEType)
{
if (TypeCast.AreTypesEquivalentInternal(pEEType, ptrUnboxToEEType))
{
return(true);
}
if (pEEType->ElementType == ptrUnboxToEEType->ElementType)
{
// Enum's and primitive types should pass the UnboxAny exception cases
// if they have an exactly matching cor element type.
switch (ptrUnboxToEEType->ElementType)
{
case EETypeElementType.Byte:
case EETypeElementType.SByte:
case EETypeElementType.Int16:
case EETypeElementType.UInt16:
case EETypeElementType.Int32:
case EETypeElementType.UInt32:
case EETypeElementType.Int64:
case EETypeElementType.UInt64:
case EETypeElementType.IntPtr:
case EETypeElementType.UIntPtr:
return(true);
}
}
return(false);
}
public static unsafe void RhUnboxNullable(ref byte data, EETypePtr pUnboxToEEType, Object obj)
{
EEType *ptrUnboxToEEType = (EEType *)pUnboxToEEType.ToPointer();
if ((obj != null) && !TypeCast.AreTypesEquivalentInternal(obj.EEType, ptrUnboxToEEType->NullableType))
{
throw ptrUnboxToEEType->GetClasslibException(ExceptionIDs.InvalidCast);
}
InternalCalls.RhUnbox(obj, ref data, ptrUnboxToEEType);
}
public unsafe static void RhUnboxAny(object o, ref Hack_o_p data, EETypePtr pUnboxToEEType)
{
EEType *ptrUnboxToEEType = (EEType *)pUnboxToEEType.ToPointer();
if (ptrUnboxToEEType->IsValueType)
{
// HACK: we would really want to take the address of o here,
// but the rules of the C# language don't let us do that,
// so we arrive at the same result by taking the address of p
// and going back one pointer-sized unit
fixed(IntPtr *pData = &data.p)
{
bool isValid = false;
if (ptrUnboxToEEType->IsNullable)
{
isValid = (o == null) || TypeCast.AreTypesEquivalentInternal(o.EEType, ptrUnboxToEEType->GetNullableType());
}
else if (o != null)
{
isValid = UnboxAnyTypeCompare(o.EEType, ptrUnboxToEEType);
}
if (!isValid)
{
// Throw the invalid cast exception defined by the classlib, using the input unbox EEType*
// to find the correct classlib.
ExceptionIDs exID = o == null ? ExceptionIDs.NullReference : ExceptionIDs.InvalidCast;
IntPtr addr = ptrUnboxToEEType->GetAssociatedModuleAddress();
Exception e = EH.GetClasslibException(exID, addr);
BinderIntrinsics.TailCall_RhpThrowEx(e);
}
InternalCalls.RhUnbox(o, pData - 1, ptrUnboxToEEType);
}
}
else
{
if (o == null || (TypeCast.IsInstanceOf(o, ptrUnboxToEEType) != null))
{
data.o = o;
}
else
{
IntPtr addr = ptrUnboxToEEType->GetAssociatedModuleAddress();
Exception e = EH.GetClasslibException(ExceptionIDs.InvalidCast, addr);
BinderIntrinsics.TailCall_RhpThrowEx(e);
}
}
}
public static unsafe void RhUnboxAny(object o, ref byte data, EETypePtr pUnboxToEEType)
{
EEType *ptrUnboxToEEType = (EEType *)pUnboxToEEType.ToPointer();
if (ptrUnboxToEEType->IsValueType)
{
bool isValid = false;
if (ptrUnboxToEEType->IsNullable)
{
isValid = (o == null) || TypeCast.AreTypesEquivalentInternal(o.EEType, ptrUnboxToEEType->NullableType);
}
else
{
isValid = (o != null) && UnboxAnyTypeCompare(o.EEType, ptrUnboxToEEType);
}
if (!isValid)
{
// Throw the invalid cast exception defined by the classlib, using the input unbox EEType*
// to find the correct classlib.
ExceptionIDs exID = o == null ? ExceptionIDs.NullReference : ExceptionIDs.InvalidCast;
throw ptrUnboxToEEType->GetClasslibException(exID);
}
InternalCalls.RhUnbox(o, ref data, ptrUnboxToEEType);
}
else
{
if (o != null && (TypeCast.IsInstanceOf(o, ptrUnboxToEEType) == null))
{
throw ptrUnboxToEEType->GetClasslibException(ExceptionIDs.InvalidCast);
}
Unsafe.As <byte, Object>(ref data) = o;
}
}