[\\\\a-zA-Z0-9_\\x80-\\xff]*)::#'; public function __construct(ReflectionProvider $reflectionProvider) { $this->reflectionProvider = $reflectionProvider; } public function getRuleDefinition() : RuleDefinition { return new RuleDefinition('Use `class` keyword for class name resolution in string instead of hardcoded string reference', [new CodeSample(<<<'CODE_SAMPLE' $value = 'App\SomeClass::someMethod()'; CODE_SAMPLE , <<<'CODE_SAMPLE' $value = \App\SomeClass::class . '::someMethod()'; CODE_SAMPLE )]); } /** * @return array> */ public function getNodeTypes() : array { return [String_::class]; } /** * @param String_ $node */ public function refactor(Node $node) : ?Node { $stringKind = $node->getAttribute(AttributeKey::KIND); if (\in_array($stringKind, [String_::KIND_HEREDOC, String_::KIND_NOWDOC], \true)) { return null; } $classNames = $this->getExistingClasses($node); $classNames = $this->filterOurShortClasses($classNames); if ($classNames === []) { return null; } $parts = $this->getParts($node, $classNames); if ($parts === []) { return null; } $exprsToConcat = $this->createExpressionsToConcat($parts); return $this->nodeFactory->createConcat($exprsToConcat); } /** * @param string[] $classNames * @return mixed[] */ private function getParts(String_ $string, array $classNames) : array { $quotedClassNames = \array_map(\Closure::fromCallable('preg_quote'), $classNames); // @see https://regex101.com/r/8nGS0F/1 $parts = Strings::split($string->value, '#(' . \implode('|', $quotedClassNames) . ')#'); return \array_filter($parts, static function (string $className) : bool { return $className !== ''; }); } /** * @return string[] */ private function getExistingClasses(String_ $string) : array { /** @var mixed[] $matches */ $matches = Strings::matchAll($string->value, self::CLASS_BEFORE_STATIC_ACCESS_REGEX, \PREG_PATTERN_ORDER); if (!isset($matches['class_name'])) { return []; } $classNames = []; foreach ($matches['class_name'] as $matchedClassName) { if (!$this->reflectionProvider->hasClass($matchedClassName)) { continue; } $classNames[] = $matchedClassName; } return $classNames; } /** * @param string[] $parts * @return ClassConstFetch[]|String_[] */ private function createExpressionsToConcat(array $parts) : array { $exprsToConcat = []; foreach ($parts as $part) { if ($this->reflectionProvider->hasClass($part)) { $exprsToConcat[] = new ClassConstFetch(new FullyQualified(\ltrim($part, '\\')), 'class'); } else { $exprsToConcat[] = new String_($part); } } return $exprsToConcat; } /** * @param string[] $classNames * @return string[] */ private function filterOurShortClasses(array $classNames) : array { return \array_filter($classNames, static function (string $className) : bool { return \strpos($className, '\\') !== \false; }); } }