internal EvaluatableQbservable(EvaluatableQbservableProvider provider, Expression expression)
{
if (expression == null)
{
throw new ArgumentNullException(nameof(expression));
}
if (!typeof(IQbservable <T>).IsAssignableFrom(expression.Type))
{
throw new ArgumentException("Expression doesn't produce a type that is compatible with this qbservable's element type", nameof(expression));
}
Provider = provider ?? throw new ArgumentNullException(nameof(provider));
Expression = expression;
}
internal EvaluatableQbservable(IObservableEvaluator evaluator)
{
Provider = new EvaluatableQbservableProvider(evaluator, GetType());
Expression = Expression.Constant(this);
}