class SuperfluousErrorNamingSniff

class SuperfluousErrorNamingSniff implements Sniff {
    public const CODE_SUPERFLUOUS_SUFFIX = 'SuperfluousSuffix';
    
    /**
     * @return array<int, (int|string)>
     */
    public function register() : array {
        return [
            T_CLASS,
        ];
    }
    
    /**
     * @phpcsSuppress SlevomatCodingStandard.TypeHints.ParameterTypeHint.MissingNativeTypeHint
     * @param int $classPointer
     */
    public function process(File $phpcsFile, $classPointer) : void {
        $className = ClassHelper::getName($phpcsFile, $classPointer);
        $previousPointer = TokenHelper::findPreviousEffective($phpcsFile, $classPointer - 1);
        if ($phpcsFile->getTokens()[$previousPointer]['code'] === T_ABSTRACT) {
            return;
        }
        if (strtolower($className) === 'error') {
            return;
        }
        $suffix = substr($className, -5);
        if (strtolower($suffix) !== 'error') {
            return;
        }
        $phpcsFile->addError(sprintf('Superfluous suffix "%s".', $suffix), $classPointer, self::CODE_SUPERFLUOUS_SUFFIX);
    }

}