*/ private const COMPLEX_PATTERN_TO_SIMPLE = ['[0-9]' => '\\d', '[a-zA-Z0-9_]' => '\\w', '[A-Za-z0-9_]' => '\\w', '[0-9a-zA-Z_]' => '\\w', '[0-9A-Za-z_]' => '\\w', '[\\r\\n\\t\\f\\v ]' => '\\s']; public function __construct(RegexPatternDetector $regexPatternDetector) { $this->regexPatternDetector = $regexPatternDetector; } public function getRuleDefinition() : RuleDefinition { return new RuleDefinition('Simplify regex pattern to known ranges', [new CodeSample(<<<'CODE_SAMPLE' class SomeClass { public function run($value) { preg_match('#[a-zA-Z0-9+]#', $value); } } CODE_SAMPLE , <<<'CODE_SAMPLE' class SomeClass { public function run($value) { preg_match('#[\w\d+]#', $value); } } CODE_SAMPLE )]); } /** * @return array> */ public function getNodeTypes() : array { return [String_::class]; } /** * @param String_ $node */ public function refactor(Node $node) : ?Node { if (!$this->regexPatternDetector->isRegexPattern($node->value)) { return null; } foreach (self::COMPLEX_PATTERN_TO_SIMPLE as $complexPattern => $simple) { $originalValue = $node->value; $simplifiedValue = Strings::replace($node->value, '#' . \preg_quote($complexPattern, '#') . '#', $simple); if ($originalValue === $simplifiedValue) { continue; } if (\strpos($originalValue, '[^' . $complexPattern) !== \false) { continue; } if ($complexPattern === $node->value) { continue; } $node->value = $simplifiedValue; return $node; } return null; } }