code: def CheckCompletedBlocks(self, filename, error):
      
      # Note: This test can result in false positives if #ifdef constructs
      # get in the way of brace matching. See the testBuildClass test in
      # cpplint_unittest.py for an example of this.
      for obj in self.stack:
        if isinstance(obj, _ClassInfo):
          error(filename, obj.starting_linenum, 'build/class', 5,
                'Failed to find complete declaration of class %s' %
                obj.name)
        elif isinstance(obj, _NamespaceInfo):
          error(filename, obj.starting_linenum, 'build/namespaces', 5,
                'Failed to find complete declaration of namespace %s' %
                obj.name)
docs: Checks that all classes and namespaces have been completely parsed.
  
      Call this when all lines in a file have been processed.
      Args:
        filename: The name of the current file.
        error: The function to call with any errors found.