�PNG  IHDR��;���IDATx��ܻn�0���K�� �)(�pA��� ���7�LeG{�� �§㻢|��ذaÆ 6lذaÆ 6lذaÆ 6lom��$^�y���ذag�5bÆ 6lذaÆ 6lذa{���� 6lذaÆ �`����}H�Fkm�,�m����Ӫ���ô�ô!� �x�|'ܢ˟;�E:���9�&ᶒ�}�{�v]�n&�6� �h��_��t�ڠ͵-ҫ���Z;��Z$�.�P���k�ž)�!��o���>}l�eQfJ�T��u і���چ��\��X=8��Rن4`Vw�l�>����n�G�^��i�s��"ms�$�u��i��?w�bs[m�6�K4���O���.�4��%����/����b�C%��t ��M�ז� �-l�G6�mrz2���s�%�9��s@���-�k�9�=���)������k�B5����\��+͂�Zsٲ ��Rn��~G���R���C����� �wIcI��n7jJ���hۛNCS|���j0��8y�iHKֶۛ�k�Ɉ+;Sz������L/��F�*\��Ԕ�#"5��m�2��[S��������=�g��n�a�P�e�ғ�L�� lذaÆ 6l�^k��̱aÆ 6lذaÆ 6lذa;���� �_��ذaÆ 6lذaÆ 6lذaÆ ���R���IEND�B` */ class FunctionReturnInWriteContextPass extends CodeCleanerPass { const ISSET_MESSAGE = 'Cannot use isset() on the result of an expression (you can use "null !== expression" instead)'; const EXCEPTION_MESSAGE = "Can't use function return value in write context"; /** * Validate that the functions are used correctly. * * @throws FatalErrorException if a function is passed as an argument reference * @throws FatalErrorException if a function is used as an argument in the isset * @throws FatalErrorException if a value is assigned to a function * * @param Node $node */ public function enterNode(Node $node) { if ($node instanceof Array_ || $this->isCallNode($node)) { $items = $node instanceof Array_ ? $node->items : $node->args; foreach ($items as $item) { if ($item && $item->byRef && $this->isCallNode($item->value)) { throw new FatalErrorException(self::EXCEPTION_MESSAGE, 0, \E_ERROR, null, $node->getLine()); } } } elseif ($node instanceof Isset_ || $node instanceof Unset_) { foreach ($node->vars as $var) { if (!$this->isCallNode($var)) { continue; } $msg = $node instanceof Isset_ ? self::ISSET_MESSAGE : self::EXCEPTION_MESSAGE; throw new FatalErrorException($msg, 0, \E_ERROR, null, $node->getLine()); } } elseif ($node instanceof Assign && $this->isCallNode($node->var)) { throw new FatalErrorException(self::EXCEPTION_MESSAGE, 0, \E_ERROR, null, $node->getLine()); } } private function isCallNode(Node $node) { return $node instanceof FuncCall || $node instanceof MethodCall || $node instanceof StaticCall; } }