public void Visit(OrOperator node)
{
VisitBinary(node);
ITerminalWrapper leftWrapper = ReferenceTables.GetValue(node.Left);
ITerminalWrapper rightWrapper = ReferenceTables.GetValue(node.Right);
ReferenceTables.SetValue(node, ((dynamic)leftWrapper) | ((dynamic)rightWrapper));
}
public void Visit(Expression node)
{
//if expression is literal
if (node.Child == null)
{
throw new Exception("Expression should have one and only one child");
}
node.Child.Accept(this);
ReferenceTables.SetValue(node, ReferenceTables.GetValue(node.Child));
}
public void Visit(ControlUnit node)
{
node.Expression.Accept(this);
YesnoWrapper conditionstate = (YesnoWrapper)ReferenceTables.GetValue(node.Expression);
if (node.ConditionTrueBlock != null && conditionstate.Value.HasValue && conditionstate.Value.Value)
{
node.ConditionTrueBlock.Accept(this);
}
if (node.ConditionFalseBlock != null && conditionstate.Value.HasValue && !conditionstate.Value.Value)
{
node.ConditionFalseBlock.Accept(this);
}
}
public void Visit(QuestionUnit node)
{
WidgetBase unitWrapper = _widgetFactory.GetWidget(node, ReferenceTables.GetValue(node.Identifier));
unitWrapper.Visibility = _parentExpressionDidNotEvaluate ? Visibility.Collapsed : Visibility.Visible;
int index = _elementsToDisplay.ToList().FindIndex(elem => elem.Unit.Identifier == unitWrapper.Unit.Identifier);
if (index < 0)
{
INotifyPropertyChanged nodeValue = node.Value as INotifyPropertyChanged;
if (nodeValue != null)
{
nodeValue.PropertyChanged += (sender, args) => _rebuildMethod();
}
_elementsToDisplay.Add(unitWrapper);
}
else
{
_elementsToDisplay[index].Visibility = unitWrapper.Visibility;
}
}