晋太元中，武陵人捕鱼为业。缘溪行，忘路之远近。忽逢桃花林，夹岸数百步，中无杂树，芳草鲜美，落英缤纷。渔人甚异之，复前行，欲穷其林。 　　林尽水源，便得一山，山有小口，仿佛若有光。便舍船，从口入。初极狭，才通人。复行数十步，豁然开朗。土地平旷，屋舍俨然，有良田、美池、桑竹之属。阡陌交通，鸡犬相闻。其中往来种作，男女衣着，悉如外人。黄发垂髫，并怡然自乐。 　　见渔人，乃大惊，问所从来。具答之。便要还家，设酒杀鸡作食。村中闻有此人，咸来问讯。自云先世避秦时乱，率妻子邑人来此绝境，不复出焉，遂与外人间隔。问今是何世，乃不知有汉，无论魏晋。此人一一为具言所闻，皆叹惋。余人各复延至其家，皆出酒食。停数日，辞去。此中人语云：“不足为外人道也。”(间隔 一作：隔绝) 　　既出，得其船，便扶向路，处处志之。及郡下，诣太守，说如此。太守即遣人随其往，寻向所志，遂迷，不复得路。 　　南阳刘子骥，高尚士也，闻之，欣然规往。未果，寻病终。后遂无问津者。 sh-3ll

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# frozen_string_literal: true
#
# $Id$
#
# Copyright (c) 2003-2005 Minero Aoki
#
# This program is free software.
# You can distribute and/or modify this program under the Ruby License.
# For details of Ruby License, see ruby/COPYING.
#

require 'ripper.so'

class Ripper

  # Parses the given Ruby program read from +src+.
  # +src+ must be a String or an IO or a object with a #gets method.
  def Ripper.parse(src, filename = '(ripper)', lineno = 1)
    new(src, filename, lineno).parse
  end

  # This array contains name of parser events.
  PARSER_EVENTS = PARSER_EVENT_TABLE.keys

  # This array contains name of scanner events.
  SCANNER_EVENTS = SCANNER_EVENT_TABLE.keys

  # This array contains name of all ripper events.
  EVENTS = PARSER_EVENTS + SCANNER_EVENTS

  private

  # :stopdoc:
  def _dispatch_0() nil end
  def _dispatch_1(a) a end
  def _dispatch_2(a, b) a end
  def _dispatch_3(a, b, c) a end
  def _dispatch_4(a, b, c, d) a end
  def _dispatch_5(a, b, c, d, e) a end
  def _dispatch_6(a, b, c, d, e, f) a end
  def _dispatch_7(a, b, c, d, e, f, g) a end
  # :startdoc:

  #
  # Parser Events
  #

  PARSER_EVENT_TABLE.each do |id, arity|
    alias_method "on_#{id}", "_dispatch_#{arity}"
  end

  # This method is called when weak warning is produced by the parser.
  # +fmt+ and +args+ is printf style.
  def warn(fmt, *args)
  end

  # This method is called when strong warning is produced by the parser.
  # +fmt+ and +args+ is printf style.
  def warning(fmt, *args)
  end

  # This method is called when the parser found syntax error.
  def compile_error(msg)
  end

  #
  # Scanner Events
  #

  SCANNER_EVENTS.each do |id|
    alias_method "on_#{id}", :_dispatch_1
  end

end