private void QuestionValueAssignedCommand_Execute(QuestionViewModel target)
{
IValue memoryValue;
if (!_memory.TryRetrieveValue(target.Id, out memoryValue))
{
memoryValue = _valueFactory.CreateDefaultValue(_symbols[target.Id].Type);
}
_memory.AssignValue(target.Id, _valueFactory.CreateValue(target.Value, memoryValue.Type));
_mainViewModel.Form = RebuildQuestionnaire(_qlAst);
}
public override Node Visit(QuestionNode question)
{
var questionNode = new QuestionNode(question.Token, question.Description, question.Label, question.IsEvaluated, question.Type);
foreach (var expression in question.ChildNodes)
{
var evaluatedNode = expression.Accept(this) as LiteralNode;
_memory.AssignValue(question.Label, _valueFactory.CreateValueFromString(evaluatedNode.Value, question.Type));
questionNode.AddChild(evaluatedNode);
}
if (!questionNode.ChildNodes.Any())
{
IValue memoryValue;
if (!_memory.TryRetrieveValue(question.Label, out memoryValue))
{
memoryValue = _valueFactory.CreateDefaultValue(question.Type);
}
questionNode.ChildNodes.Add(new LiteralNode(question.Token, memoryValue.ToString(), question.Type));
}
return(questionNode);
}
