public static IElement CreateControlFlowElement(XmlNode node, ControlFlowType type)
{
IElement _return = null;
switch (type)
{
case ControlFlowType.If:
_return = new IfElement(node, CreateElements(node.SelectNodes(DO_NODE)), CreateElements(node.SelectNodes(ELSE_NODE)));
break;
case ControlFlowType.ForEach:
_return = new ForEachElement(node, CreateElements(node.SelectNodes(DO_NODE)));
break;
case ControlFlowType.Repeat:
_return = new RepeatElement(node, CreateElements(node.SelectNodes(DO_NODE)));
break;
case ControlFlowType.While:
break;
case ControlFlowType.Switch:
break;
default:
break;
}
return(_return);
}
private void executeForEach(ForEachElement forEachNode)
{
string valueOf = forEachNode.getAttribute(AttributeConstants.VALUE_OF).getValue().ToString();
string asVariableName = forEachNode.getAttribute(AttributeConstants.AS).getValue().ToString();
object selectedValue = this._AttributeSelector.valueOf(valueOf);
if (selectedValue == null)
{
throw new Exception("Could not do ForEach, [null] activity return.");
}
if (selectedValue.GetType() != typeof(List <string>))
{
throw new Exception("Could not do ForEach, expected return-type 'List'.");
}
IList <string> list = (IList <string>)selectedValue;
foreach (var item in list)
{
this._stateProvider.getVariables().Add(asVariableName, item);
IList <IElement> doNodes = forEachNode.DoNodes;
runRecursive(doNodes);
this._stateProvider.getVariables().Remove(asVariableName); // remove in memory
}
}
public void Parse(string data, ref TemplateElementContainer parent)
{
var regex = @"foreach\(\s*(?<identifier>.*)\s+in\s+(?<source>.*)\s*\)";
var match = Regex.Match(data, regex);
if (!match.Success)
{
throw new InvalidOperationException($"Unable to parse foreach epxression: {data}");
}
var newForeach = new ForEachElement(parent)
{
Identifier = match.Groups["identifier"].Value,
SourceReference = match.Groups["source"].Value
};
parent.Children.Add(newForeach);
parent = newForeach;
}
