/**
* @param string $stringExpression
* @return float
* @throws InvalidExpressionException
*/
public function evaluate($stringExpression)
{
$infixArray = $this->expressionParser->parse($stringExpression);
$rpnExpression = $this->notationTransformer->infixToRpn($infixArray);
$result = $this->evaluateRpnExpression($rpnExpression);
return $result;
}
/**
* @expectedException \SimpleCalculator\Exception\InvalidOperator
*/
public function test_it_throws_InvalidOperator_exception_for_expression_with_unknown_operator()
{
$this->notationTransformer->infixToRpn(['1', '#', '2', '*', '3']);
}