/**
* Populate node with operands, without any simplification.
*
* @param Node $node
* @retval Node
* @throws SyntaxErrorException
*/
protected function naiveHandleExpression($node)
{
if ($node->getOperator() == '~') {
$left = $this->operandStack->pop();
if ($left === null) {
throw new SyntaxErrorException();
}
$node->setOperator('-');
$node->setLeft($left);
return $node;
}
$right = $this->operandStack->pop();
$left = $this->operandStack->pop();
if ($right === null || $left === null) {
throw new SyntaxErrorException();
}
$node->setLeft($left);
$node->setRight($right);
return $node;
}
