classConstManipulator = $classConstManipulator; $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 refactorWithScope(Node $node, Scope $scope) : ?int { if ($this->shouldSkipClassConst($node, $scope)) { 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, Scope $scope) : bool { if (!$classConst->isPrivate()) { return \true; } if (\count($classConst->consts) !== 1) { return \true; } $classReflection = $scope->getClassReflection(); if (!$classReflection instanceof ClassReflection) { return \false; } return $this->hasParentClassOfEnumSuffix($classReflection); } private function hasParentClassOfEnumSuffix(ClassReflection $classReflection) : bool { foreach ($classReflection->getParentClassesNames() as $parentClassesName) { if (\substr_compare($parentClassesName, 'Enum', -\strlen('Enum')) === 0) { return \true; } } return \false; } }