assignAndBinaryMap = $assignAndBinaryMap; } public function getRuleDefinition() : RuleDefinition { return new RuleDefinition('Simplify $value = $value + 5; assignments to shorter ones', [new CodeSample('$value = $value + 5;', '$value += 5;')]); } /** * @return array> */ public function getNodeTypes() : array { return [Assign::class]; } /** * @param Assign $node */ public function refactor(Node $node) : ?Node { if (!$node->expr instanceof BinaryOp) { return null; } /** @var BinaryOp $binaryNode */ $binaryNode = $node->expr; if (!$this->nodeComparator->areNodesEqual($node->var, $binaryNode->left)) { return null; } $assignClass = $this->assignAndBinaryMap->getAlternative($binaryNode); if ($assignClass === null) { return null; } return new $assignClass($node->var, $binaryNode->right); } }