| public CanBeReachedByDownCastOrPromotion ( IType expectedType, IType actualType ) : bool | ||
| expectedType | IType | |
| actualType | IType | |
| return | bool | |
private int CalculateArgumentScore(IParameter param, IType parameterType, Node arg)
{
IType argumentType = GetExpressionTypeOrEntityType(arg);
if (IsValidByRefArg(param, parameterType, argumentType, arg))
{
// boo does not like byref
return(3);
}
else if (parameterType == argumentType)
{
// exact match
return(6);
}
else if (parameterType.IsAssignableFrom(argumentType))
{
// upcast
return(5);
}
else if (TypeSystemServices.CanBeReachedByDownCastOrPromotion(parameterType, argumentType))
{
// downcast
return(4);
}
return(-1);
}