terminatedNodeAnalyzer = $terminatedNodeAnalyzer; } public function getRuleDefinition() : RuleDefinition { return new RuleDefinition('Remove unreachable statements', [new CodeSample(<<<'CODE_SAMPLE' class SomeClass { public function run() { return 5; $removeMe = 10; } } CODE_SAMPLE , <<<'CODE_SAMPLE' class SomeClass { public function run() { return 5; } } CODE_SAMPLE )]); } /** * @return array> */ public function getNodeTypes() : array { return [StmtsAwareInterface::class]; } /** * @param StmtsAwareInterface $node */ public function refactor(Node $node) : ?Node { if ($node->stmts === null) { return null; } $originalStmts = $node->stmts; $cleanedStmts = $this->processCleanUpUnreachabelStmts($node, $node->stmts); if ($cleanedStmts === $originalStmts) { return null; } $node->stmts = $cleanedStmts; return $node; } /** * @param Stmt[] $stmts * @return Stmt[] */ private function processCleanUpUnreachabelStmts(StmtsAwareInterface $stmtsAware, array $stmts) : array { foreach ($stmts as $key => $stmt) { if (!isset($stmts[$key - 1])) { continue; } $previousStmt = $stmts[$key - 1]; // unset... if ($this->terminatedNodeAnalyzer->isAlwaysTerminated($stmtsAware, $previousStmt, $stmt)) { \array_splice($stmts, $key); return $stmts; } } return $stmts; } }