owncloud / core

	public $errors = [];

	public function enterNode(Node $node) {

		if ($this->checkEqualOperatorUsage && $node instanceof Node\Expr\BinaryOp\Equal) {

			$this->errors[]= [

				'disallowedToken' => '==',

				'errorCode' => CodeChecker::OP_OPERATOR_USAGE_DISCOURAGED,

				'line' => $node->getLine(),

				'reason' => $this->buildReason('==', CodeChecker::OP_OPERATOR_USAGE_DISCOURAGED)

			];

		}

		if ($this->checkEqualOperatorUsage && $node instanceof Node\Expr\BinaryOp\NotEqual) {

			$this->errors[]= [

				'disallowedToken' => '!=',

				'reason' => $this->buildReason('==', CodeChecker::OP_OPERATOR_USAGE_DISCOURAGED)

			];

		}

		if ($this->checkEqualOperatorUsage && $node instanceof Node\Expr\BinaryOp\NotEqual) {

			$this->errors[]= [

				'disallowedToken' => '!=',

				'errorCode' => CodeChecker::OP_OPERATOR_USAGE_DISCOURAGED,

				'line' => $node->getLine(),

				'reason' => $this->buildReason('!=', CodeChecker::OP_OPERATOR_USAGE_DISCOURAGED)

			];

		}

		if ($node instanceof Node\Stmt\Class_) {

			if ($node->extends !== null) {

				$this->checkBlackList($node->extends->toString(), CodeChecker::CLASS_EXTENDS_NOT_ALLOWED, $node);