public int AddConversion<T> (Func<T, string> conversion)
{
int supportedTypeIndex = 0;
lock (_mapSyncRoot)
{
if (_map.Any (c => c.SupportedType.Equals (typeof (T)))
{
// already exists! what do we do? meh, maybe return
// existing index, maybe overwrite, maybe throw
// exception? up to you :)
//
// actually, you probably want to add a soft means of
// interrogation or addition, like add a ConversionExists
// method, or a TryAddConversion method, and throw
// exception if exists
}
else
{
ConversionRule conversionRule = new ConversionRule
{
SupportedType = typeof (T),
Conversion = (s) => conversion (s),
};
_map.Add (conversionRule);
supportedTypeIndex = _map.Count - 1;
}
}
return supportedTypeIndex;
}
public IActionResult DeleteConversionRule([FromBody] ConversionRule conversionRule)
{
DBResponse dbResponse = ToolInventoryRepo.DeleteConversionRule(conversionRule);
return(StatusCode(StatusCodes.Status200OK, new APIResponse
{
ResponseCode = 0,
ResponseText = "Setup Sheet updated"
}));
}
public APIResponse DeleteConversionRule(ConversionRule conversionRule)
{
DBResponse dbResponse = ToolInventoryRepo.DeleteConversionRule(conversionRule);
return(new APIResponse
{
ResponseCode = 0,
ResponseText = "Setup Sheet updated"
});
}
public T Convert<T> (string stringValue, int supportedTypeIndex)
{
T value = default (T);
ConversionRule conversionRule = null;
lock (_mapSyncRoot)
{
if ((supportedTypeIndex > 0) &&
(supportedTypeIndex < _map.Count))
{
if (_map[supportedTypeIndex].SupportedType == typeof (T))
{
conversionRule = _map[supportedTypeIndex];
}
else
{
// oh nos! someone supplied a bad index! or type!
}
}
else
{
// arg, definitely a bad index
}
}
object untypedValue = null;
try
{
untypedValue = conversionRule.Conversion (stringValue);
}
// alright, catching all exceptions is bad, but how do you constrain
// or set reasonable expectations on a user-submitted lambda expression?
catch (Exception exception)
{
throw new ArgumentException (
string.Format (
"Cannot convert type [{0}] with value [{1}] to type [{2}]." +
" Converter threw exception.",
stringValue.GetType (),
stringValue,
typeof (T)),
exception);
}
// NOTE: proper use of `is` operator
if (untypedValue is T)
{
value = (T)(untypedValue);
}
else
{
// i think you know what to do ;)
}
return value;
}
public MainWindowViewModel(GraphEditorViewModel graphViewModel)
{
this.graphViewModel = graphViewModel;
InsertNodeCommand = new RelayCommand(InsertNode)
{
CanExecute = true
};
// Load in usable nodes
string[] dllFile = Directory.GetFiles(App.PluginFolderPath, "*.dll");
List <Assembly> assemblies = new List <Assembly>(dllFile.Length);
foreach (string file in dllFile)
{
try
{
Assembly assembly = Assembly.LoadFrom(file);
Type[] types = assembly.GetTypes();
// Look for NodeBase types
foreach (Type type in types)
{
if (type.IsSubclassOf(typeof(NodeBase)))
{
// Get unique name
LoadedNodes.Add(type);
// If this is a conversion node tell our graph about it
ConversionRule conversionRule = type.GetCustomAttribute(typeof(ConversionRule)) as ConversionRule;
if (conversionRule != null)
{
graphViewModel.AddConversionRule(conversionRule.InputType, conversionRule.OutputType, type);
}
}
}
}
catch
{
MessageBox.Show("Error loading nodes.\nPlease ensure there are libraries in the /NodePlugins folder and that they are unblocked.");
}
}
}
protected virtual (PropertyInfo, ConversionRule) FindCorrespondingProperty(PropertyInfo fromProperty, IEnumerable <PropertyInfo> toProperties)
{
var rtn = toProperties.SingleOrDefault(x => x.Name == fromProperty.Name);
ConversionRule conversionRule = null;
if (rtn == null)
{
foreach (var rule in conversionRules)
{
rtn = toProperties.SingleOrDefault(toProperty => rule.QualifierMethod(fromProperty, toProperty));
if (rtn != null)
{
conversionRule = rule;
break;
}
}
}
return(rtn, conversionRule);
}
public void AddConversion <T> (Func <S, T> conversion)
{
lock (_syncRoot)
{
if (_map.Any(c => c.SupportedType.Equals(typeof(T))))
{
throw new ArgumentException(
string.Format(
"Conversion from [{0}] to [{1}] already exists. " +
"Cannot add new conversion.",
typeof(S),
typeof(T)));
}
ConversionRule conversionRule = new ConversionRule
{
SupportedType = typeof(T),
Conversion = (s) => conversion(s),
};
_map.Add(conversionRule);
}
}
public Func <S, T> GetConversion <T> ()
{
Func <S, T> conversionMethod = null;
lock (_syncRoot)
{
ConversionRule conversion = _map.
SingleOrDefault(c => c.SupportedType.Equals(typeof(T)));
if (conversion == null)
{
throw new NotSupportedException(
string.Format(
"Conversion from [{0}] to [{1}] is not supported. " +
"Cannot get conversion.",
typeof(S),
typeof(T)));
}
conversionMethod =
(value) => ConvertWrap <T> (conversion.Conversion, value);
}
return(conversionMethod);
}
