method evaluate

Source

evaluate(EvaluationType type, ContextModel context) {
  // Interval borders should evaluate to real numbers..
  num minEval = min.evaluate(EvaluationType.REAL, context);
  num maxEval = max.evaluate(EvaluationType.REAL, context);

  if (type == EvaluationType.INTERVAL) {
    return new Interval(minEval, maxEval);
  }

  if (type == EvaluationType.REAL) {
    // If min == max, we can interpret an interval as real.
    //TODO But should we?
    if (minEval == maxEval) {
      return minEval;
    }
  }

  throw new UnsupportedError('Interval $this can not be interpreted as: ${type}');
}