public static ConverterParam ConvertParam <TParam>(
object value,
CultureInfo cultureInfo,
object callingClass,
[CallerMemberName] string callerMemberName = null)
where TParam
: ConverterParam
{
var parameterType = typeof(TParam);
if (parameterType == typeof(NullParam))
{
return(new NullParam(
value,
cultureInfo));
}
if (TypeExtensions.IsGenericOf(parameterType, typeof(ConverterParam <>)))
{
var valueType = parameterType
.GetGenericArguments()
.SingleOrDefault();
var valueConverted = ConvertImpl(
value,
valueType,
callingClass);
var wrapped = parameterType
.Reflect()
.CreateInstance(
MemberDescriptor.Public,
valueConverted,
cultureInfo);
return((TParam)wrapped);
}
throw new NotSupportedException();
}
public static object ConvertImpl(
object value,
Type destinationValueType,
object callingClass,
[CallerMemberName] string callerMemberName = null)
{
if (destinationValueType.IsGenericOf(typeof(VeridicBinding <>)))
{
}
if (TypeExtensions.IsGenericOf(destinationValueType, typeof(Nullable <>)))
{
if (value == DependencyProperty.UnsetValue ||
value == null)
{
return(destinationValueType.CreateDefaultValue());
// return null;
}
try
{
destinationValueType = destinationValueType
.GetGenericArguments()
.Single();
return(ConvertImpl(
value,
destinationValueType,
callingClass));
}
catch
{
throw new InvalidCastException(
$"{callingClass.GetType().Name}." +
$"{callerMemberName} : Invalid cast from " +
$"{StringExtensions.SQuote(value.GetType().FormatName())} " +
$"to {StringExtensions.SQuote(destinationValueType.FormatName())}.");
}
}
if (value == DependencyProperty.UnsetValue ||
value == null)
{
if (destinationValueType.IsValueType)
{
return(destinationValueType.CreateDefaultValue());
//throw new NotSupportedException();
}
return(null);
}
if (destinationValueType.IsInstanceOfType(value))
{
return(value);
}
if (value is IConvertible)
{
var converted = System.Convert.ChangeType(
value, destinationValueType);
return(converted);
}
try
{
return(value);
}
catch
{
throw new InvalidCastException(
$"{callingClass.GetType().Name}." +
$"{callerMemberName} : Invalid cast from " +
$"{value.GetType()} to {destinationValueType.Name}.");
}
}
