class RuboCop::Rails::SchemaLoader::Column

def analyze_keywords!(node)
  pairs = node.arguments.last
  return unless pairs.hash_type?
  pairs.each_pair do |k, v|
    @not_null = !v.true_type? if k.value == :null
  end
end

def initialize(node)
  @name = node.first_argument.str_content
  @type = node.method_name
  @not_null = nil
  analyze_keywords!(node)
end