class PropertyHelper

class PropertyHelper {
    public static function isProperty(File $phpcsFile, int $variablePointer, bool $promoted = false) : bool {
        $tokens = $phpcsFile->getTokens();
        $previousPointer = TokenHelper::findPreviousExcluding($phpcsFile, array_merge(TokenHelper::$ineffectiveTokenCodes, TokenHelper::getTypeHintTokenCodes(), [
            T_NULLABLE,
        ]), $variablePointer - 1);
        if ($tokens[$previousPointer]['code'] === T_STATIC) {
            $previousPointer = TokenHelper::findPreviousEffective($phpcsFile, $previousPointer - 1);
        }
        if (in_array($tokens[$previousPointer]['code'], [
            T_PUBLIC,
            T_PROTECTED,
            T_PRIVATE,
            T_VAR,
            T_READONLY,
        ], true)) {
            $constructorPointer = TokenHelper::findPrevious($phpcsFile, T_FUNCTION, $previousPointer - 1);
            if ($constructorPointer === null) {
                return true;
            }
            return $tokens[$constructorPointer]['parenthesis_closer'] < $previousPointer || $promoted;
        }
        if (!array_key_exists('conditions', $tokens[$variablePointer]) || count($tokens[$variablePointer]['conditions']) === 0) {
            return false;
        }
        $functionPointer = TokenHelper::findPrevious($phpcsFile, array_merge(TokenHelper::$functionTokenCodes, [
            T_SEMICOLON,
            T_CLOSE_CURLY_BRACKET,
            T_OPEN_CURLY_BRACKET,
        ]), $variablePointer - 1);
        if ($functionPointer !== null && in_array($tokens[$functionPointer]['code'], TokenHelper::$functionTokenCodes, true)) {
            return false;
        }
        $conditionCode = array_values($tokens[$variablePointer]['conditions'])[count($tokens[$variablePointer]['conditions']) - 1];
        return in_array($conditionCode, Tokens::$ooScopeTokens, true);
    }
    public static function findTypeHint(File $phpcsFile, int $propertyPointer) : ?TypeHint {
        $tokens = $phpcsFile->getTokens();
        $propertyStartPointer = TokenHelper::findPrevious($phpcsFile, [
            T_PRIVATE,
            T_PROTECTED,
            T_PUBLIC,
            T_VAR,
            T_STATIC,
            T_READONLY,
        ], $propertyPointer - 1);
        $typeHintEndPointer = TokenHelper::findPrevious($phpcsFile, TokenHelper::getTypeHintTokenCodes(), $propertyPointer - 1, $propertyStartPointer);
        if ($typeHintEndPointer === null) {
            return null;
        }
        $typeHintStartPointer = TypeHintHelper::getStartPointer($phpcsFile, $typeHintEndPointer);
        $previousPointer = TokenHelper::findPreviousEffective($phpcsFile, $typeHintStartPointer - 1, $propertyStartPointer);
        $nullable = $previousPointer !== null && $tokens[$previousPointer]['code'] === T_NULLABLE;
        if ($nullable) {
            $typeHintStartPointer = $previousPointer;
        }
        $typeHint = TokenHelper::getContent($phpcsFile, $typeHintStartPointer, $typeHintEndPointer);
        if (!$nullable) {
            $nullable = preg_match('~(?:^|\\|\\s*)null(?:\\s*\\||$)~i', $typeHint) === 1;
        }
        
        /** @var string $typeHint */
        $typeHint = preg_replace('~\\s+~', '', $typeHint);
        return new TypeHint($typeHint, $nullable, $typeHintStartPointer, $typeHintEndPointer);
    }
    public static function getFullyQualifiedName(File $phpcsFile, int $propertyPointer) : string {
        $propertyToken = $phpcsFile->getTokens()[$propertyPointer];
        $propertyName = $propertyToken['content'];
        $classPointer = array_reverse(array_keys($propertyToken['conditions']))[0];
        if ($phpcsFile->getTokens()[$classPointer]['code'] === T_ANON_CLASS) {
            return sprintf('class@anonymous::%s', $propertyName);
        }
        $name = sprintf('%s%s::%s', NamespaceHelper::NAMESPACE_SEPARATOR, ClassHelper::getName($phpcsFile, $classPointer), $propertyName);
        $namespace = NamespaceHelper::findCurrentNamespaceName($phpcsFile, $propertyPointer);
        return $namespace !== null ? sprintf('%s%s%s', NamespaceHelper::NAMESPACE_SEPARATOR, $namespace, $name) : $name;
    }

}