private static object ConvertToVar(object value, Type targetType)
{
Type sourceType = value?.GetType();
if (value is Var var)
{
value = var.RawValue;
sourceType = value?.GetType();
}
object convertedValue = null;
if (Is.Collection(value))
{
var elementType = TypeOf.Var(targetType);
var arrayType = elementType.MakeArrayType();
convertedValue = ConvertValue(value, arrayType);
}
else if (value is Range range)
{
convertedValue = range;
}
else
{
var elementType = TypeOf.Var(targetType);
convertedValue = ConvertValue(value, elementType);
}
var varInstance = (Var)Activator.CreateInstance(targetType);
varInstance.RawValue = convertedValue;
return(varInstance);
}
private static object Convert(object value, Type targetType, object defaultValue)
{
if (defaultValue == null)
{
defaultValue = Default.Of(targetType);
}
if (value == null || value == DBNull.Value)
{
return(defaultValue);
}
if (value is IChangeTypeSupport support)
{
var done = support.ChangeTo(targetType, out object target);
if (done)
{
return(target);
}
}
if (Is.Collection(targetType))
{
var elementType = TypeOf.CollectionElement(targetType);
if (targetType.IsArray)
{
var sourceList = value as IList ?? new[] { value };
var targetList = (IList)Activator.CreateInstance(targetType, sourceList.Count);
for (int i = 0; i < sourceList.Count; i++)
{
targetList[i] = ConvertItem(sourceList[i], elementType);
}
return(targetList);
}
else
{
var sourceList = value as IList ?? new[] { value };
var targetList = (IList)Activator.CreateInstance(targetType);
foreach (var sourceElement in sourceList)
{
var targetElement = ConvertItem(sourceElement, elementType);
targetList.Add(targetElement);
}
return(targetList);
}
}
else
{
return(ConvertItem(value, targetType) ?? defaultValue);
}
}