/**
* {@inheritdoc}
*/
public function __invoke(array $data)
{
if (!isset($this->ast)) {
$tokens = ExpressionParser::lex($this->expr, $this->vars);
$this->ast = ExpressionParser::parseExpression($tokens);
}
return $this->ast->__invoke($data);
}
/**
* {@inheritdoc}
*/
public function toString(Quoter $quoter)
{
if (!$this->left instanceof Atomic) {
return '(' . $this->left->toString($quoter) . ') ' . $this->operator . ' ' . $this->right->toString($quoter);
}
return $this->left->toString($quoter) . ' ' . $this->operator . ' ' . $this->right->toString($quoter);
}