File Content: Operator.php <?php namespace PleskMonitoring\NXP\Classes; use PleskMonitoring\NXP\Exception\IncorrectExpressionException; use ReflectionFunction; class Operator { /** * @var callable(\SplStack) */ public $function; public int $places = 0; /** * Operator constructor. */ public function __construct(public string $operator, public bool $isRightAssoc, public int $priority, callable $function) { $this->function = $function; $reflection = new ReflectionFunction($function); $this->places = $reflection->getNumberOfParameters(); } /** * @param array<Token> $stack * * @throws IncorrectExpressionException */ public function execute(array &$stack) : Token { if (\count($stack) < $this->places) { throw new IncorrectExpressionException(); } $args = []; for ($i = 0; $i < $this->places; $i++) { \array_unshift($args, \array_pop($stack)->value); } $result = \call_user_func_array($this->function, $args); return new Token(Token::Literal, $result); } } Submit