public static IValue Evaluate(IExpression expression, Func <string, IValue> getAnswer)
{
var evaluator = new QLExpressionEvaluator(getAnswer);
try
{
expression.Accept(evaluator);
}
catch (RuntimeBinderException)
{
throw new InvalidExpressionException(expression);
}
return(evaluator._result);
}
private bool EvaluateCondition(IExpression expression) => QLExpressionEvaluator.AsBool(QLExpressionEvaluator.Evaluate(expression, GetAnswer));
public void Visit(ComputedQuestion question)
{
_answers[question.Id] = QLExpressionEvaluator.Evaluate(question.Computation, GetAnswer);
AddQuestion(question, true);
}