/// <summary>
/// Returns the value as a dictionary if the current value represents an object.
/// Otherwise returns null.
/// </summary>
public IDictionary <string, DynamicValue> ToDictionary()
{
if (!(_value is IDictionary <string, object> dict))
{
return(null);
}
return(DynamicDictionary.Create(dict));
}
public T Get <T>(string path)
{
var dynamicDictionary = Value switch
{
DynamicDictionary v => v,
IDictionary <string, object> v => DynamicDictionary.Create(v),
_ => null,
};
return(dynamicDictionary == null ? default : dynamicDictionary.Get <T>(path));
}
internal bool TryParse(object defaultValue, Type targetReturnType, object value, out object newObject)
{
newObject = defaultValue;
if (value == null)
{
return(false);
}
if (targetReturnType.IsGenericType && targetReturnType.GetGenericTypeDefinition() == typeof(Nullable <>))
{
targetReturnType = targetReturnType.GenericTypeArguments[0];
}
try
{
var valueType = value.GetType();
if (targetReturnType.IsArray && value is DynamicValue v)
{
value = v.Value;
valueType = value.GetType();
}
if (targetReturnType.IsArray)
{
if (!valueType.IsArray)
{
return(false);
}
var ar = (object[])value;
var t = targetReturnType.GetElementType();
var objectArray = ar
.Select(a => TryParse(defaultValue, t, a, out var o) ? o : null)
.Where(a => a != null)
.ToArray();
var arr = Array.CreateInstance(t, objectArray.Length);
Array.Copy(objectArray, arr, objectArray.Length);
newObject = arr;
return(true);
}
if (valueType.IsAssignableFrom(targetReturnType))
{
newObject = value;
return(true);
}
var stringValue = value as string;
if (targetReturnType == typeof(DateTime) &&
DateTime.TryParse(stringValue, CultureInfo.InvariantCulture, DateTimeStyles.None, out var result))
{
newObject = result;
return(true);
}
if (stringValue != null)
{
if (targetReturnType == typeof(object))
{
newObject = Convert.ChangeType(value, targetReturnType);
return(true);
}
var converter = TypeDescriptor.GetConverter(targetReturnType);
if (converter.IsValid(stringValue))
{
newObject = converter.ConvertFromInvariantString(stringValue);
return(true);
}
}
else if (value is DynamicValue dv)
{
return(dv.TryParse(defaultValue, targetReturnType, dv.Value, out newObject));
}
else if (targetReturnType == typeof(string))
{
newObject = Convert.ChangeType(value, TypeCode.String, CultureInfo.InvariantCulture);
return(true);
}
else if (valueType.IsValueType)
{
newObject = Convert.ChangeType(_value, targetReturnType);
return(true);
}
else if (targetReturnType == typeof(DynamicDictionary) && valueType == typeof(Dictionary <string, object>))
{
newObject = DynamicDictionary.Create(value as Dictionary <string, object>);
return(true);
}
else if (targetReturnType == typeof(object))
{
newObject = value;
return(true);
}
}
catch
{
return(false);
}
return(false);
}