private object?ConvertTo(CommandOptionDescriptor option, Type type, string value)
{
try
{
return(Validate(option, _valueConverter.ConvertTo(type, value)));
}
catch (Exception ex) when(!(ex is ParameterBinderException))
{
throw new ParameterBinderException(ParameterBinderResult.TypeNotSupported, $"Option '{option.Name}' requires {type.Name} value. '{value}' cannot be converted to {type.Name} value.", option: option, innerException: ex);
}
}
/// <summary>
/// Create an array or list instance from the values. A return value indicates the array or list instance has created or not.
/// </summary>
/// <param name="valueType"></param>
/// <param name="values"></param>
/// <param name="converter"></param>
/// <param name="arrayOrEnumerableLike"></param>
/// <returns></returns>
public static bool TryCreateArrayOrEnumerableLike(Type valueType, string?[] values, ICoconaValueConverter converter, [NotNullWhen(true)] out object?arrayOrEnumerableLike)
{
if (valueType.IsGenericType)
{
// Any<T>
var openGenericType = valueType.GetGenericTypeDefinition();
var elementType = valueType.GetGenericArguments()[0];
// List<T> (== IList<T>, IReadOnlyList<T>, ICollection<T>, IEnumerable<T>)
if (openGenericType == typeof(List <>) ||
openGenericType == typeof(IList <>) ||
openGenericType == typeof(IReadOnlyList <>) ||
openGenericType == typeof(ICollection <>) ||
openGenericType == typeof(IEnumerable <>))
{
var typedArray = Array.CreateInstance(elementType, values.Length);
for (var i = 0; i < values.Length; i++)
{
typedArray.SetValue(converter.ConvertTo(elementType, values[i]), i);
}
var listT = typeof(List <>).MakeGenericType(elementType);
arrayOrEnumerableLike = Activator.CreateInstance(listT, new[] { typedArray });
return(true);
}
}
else if (valueType.IsArray)
{
// T[]
var elementType = valueType.GetElementType();
var typedArray = Array.CreateInstance(elementType, values.Length);
for (var i = 0; i < values.Length; i++)
{
typedArray.SetValue(converter.ConvertTo(elementType, values[i]), i);
}
arrayOrEnumerableLike = typedArray;
return(true);
}
arrayOrEnumerableLike = null;
return(false);
}