classConstManipulator = $classConstManipulator; $this->enumAnalyzer = $enumAnalyzer; $this->reflectionResolver = $reflectionResolver; } public function getRuleDefinition() : RuleDefinition { return new RuleDefinition('Remove unused class constants', [new CodeSample(<<<'CODE_SAMPLE' class SomeClass { private const SOME_CONST = 'dead'; public function run() { } } CODE_SAMPLE , <<<'CODE_SAMPLE' class SomeClass { public function run() { } } CODE_SAMPLE )]); } /** * @return array> */ public function getNodeTypes() : array { return [ClassConst::class]; } /** * @param ClassConst $node */ public function refactor(Node $node) : ?int { if ($this->shouldSkipClassConst($node)) { return null; } $classReflection = $this->reflectionResolver->resolveClassReflection($node); if (!$classReflection instanceof ClassReflection) { return null; } if ($this->classConstManipulator->hasClassConstFetch($node, $classReflection)) { return null; } return NodeTraverser::REMOVE_NODE; } private function shouldSkipClassConst(ClassConst $classConst) : bool { if (!$classConst->isPrivate()) { return \true; } if (\count($classConst->consts) !== 1) { return \true; } return $this->enumAnalyzer->isEnumClassConst($classConst); } }