private ValidationResult Validate(T value)
{
try
{
return(_validate(value));
}
catch (Exception e)
{
return(ValidationResult.Error(String.Format("Exception during validation of '{0}' for '{1}': {2}", value, Name, e.Message)));
}
}
public ValidationResult LoadFromDictionary(Dictionary <string, Object> dict)
{
object value;
if (!dict.TryGetValue(Name, out value))
{
return(ValidationResult.Error(String.Format("There's no data for '{0}'.", Name)));
}
// MiniJson does support only a couple of types
// and there are types not mapped directly.
// For example: int gets deserialized as long
// https://gist.github.com/darktable/1411710
// null is always wrong
if (value == null)
{
return(ValidationResult.Error(String.Format("Data for '{0}' is null.", Name)));
}
try
{
T v = (T)Convert.ChangeType(value, typeof(T));
var validation = Validate(v);
if (validation.IsOk())
{
Value = v;
}
return(validation);
}
catch (Exception e)
{
return(ValidationResult.Error(String.Format("Exception during loading of '{0}' with value '{1}': {2}", Name, value, e.Message)));
}
}
private static Func <T, ValidationResult> Validate <T>(Func <T, bool> validator, string errorMessage) => (value) => validator(value) ? ValidationResult.OK() : ValidationResult.Error(errorMessage);