for testing and deploying your application
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<?php declare(strict_types=1);
/**
* @license http://opensource.org/licenses/mit-license.php MIT
* @link https://github.com/nicoSWD
* @author Nicolas Oelgart <[email protected]>
*/
namespace nicoSWD\Rule\Grammar\JavaScript\Methods;
use nicoSWD\Rule\Grammar\CallableFunction;
use nicoSWD\Rule\Parser\Exception\ParserException;
use nicoSWD\Rule\TokenStream\Token\BaseToken;
use nicoSWD\Rule\TokenStream\Token\TokenBool;
use nicoSWD\Rule\TokenStream\Token\TokenInteger;
use nicoSWD\Rule\TokenStream\Token\TokenString;
final class StartsWith extends CallableFunction
{
public function call(?BaseToken ...$parameters): BaseToken
if (!$this->token instanceof TokenString) {
throw new ParserException('Call to undefined method "startsWith" on non-string');
}
$needle = $this->parseParameter($parameters, 0);
$offset = $this->getOffset($this->parseParameter($parameters, 1));
$position = strpos($this->token->getValue(), $needle->getValue(), $offset);
return new TokenBool($position === $offset);
private function getOffset(?BaseToken $offset): int
if ($offset instanceof TokenInteger) {
$offset = $offset->getValue();
} else {
$offset = 0;
return $offset;
nicoSWD /
php-rule-parser
