module Cucumber::Ast::HasLocation

def file
  location.file
end

def file_colon_line
  location.to_s
end

def line
  location.line
end

def location
  raise('Please set @location in the constructor') unless @location
  raise("@location must be an Ast::Location but is a #{@location.class}") unless @location.is_a?(Location)
  @location
end