class Cucumber::RbStepDefinition


end
# some code here
Given /I have (d+) cucumbers in my belly/ do
in the step_definitions ruby files - for example:
by calling Given, When or Then
A Step Definition holds a Regexp and a Proc, and is created

def file 

def file
  @file ||= file_colon_line.split(':')[0]
end

def file_colon_line 

def file_colon_line
  @proc.file_colon_line
end

def initialize(rb_language, pattern, &proc) 

def initialize(rb_language, pattern, &proc)
  raise MissingProc if proc.nil?
  if String === pattern
    p = pattern.gsub(/\$\w+/, '(.*)') # Replace $var with (.*)
    pattern = Regexp.new("^#{p}$") 
  end
  @rb_language, @regexp, @proc = rb_language, pattern, proc
end

def invoke(args) 

def invoke(args)
  args = args.map{|arg| Ast::PyString === arg ? arg.to_s : arg}
  begin
    @rb_language.current_world.cucumber_instance_exec(true, regexp.inspect, *args, &@proc)
  rescue Cucumber::ArityMismatchError => e
    e.backtrace.unshift(self.backtrace_line)
    raise e
  end
end

def regexp 

def regexp
  @regexp
end