从YAML反序列化ruby对象失败:方法的分配器未定义(TypeError)

从YAML反序列化ruby对象失败:方法的分配器未定义(TypeError),ruby,serialization,yaml,Ruby,Serialization,Yaml,我正在尝试保存游戏的当前状态。我通过创建一个新文件并编写YAML::dump(game\u state)将game\u state对象序列化到YAML。然后,我使用以下代码对其进行反序列化: input = YAML.open(@text_input.to_s + '.yml', 'r') playstate = YAML.load(input.read) puts playstate 我在运行时遇到这个错误 C:/Ruby192/lib/ruby/1.9.1/psych/visitors/t

我正在尝试保存游戏的当前状态。我通过创建一个新文件并编写
YAML::dump(game\u state)
将game\u state对象序列化到YAML。然后,我使用以下代码对其进行反序列化:

input = YAML.open(@text_input.to_s + '.yml', 'r')
playstate = YAML.load(input.read)
puts playstate
我在运行时遇到这个错误

C:/Ruby192/lib/ruby/1.9.1/psych/visitors/to_ruby.rb:227:in `allocate': allocator
undefined for Method (TypeError)
        from C:/Ruby192/lib/ruby/1.9.1/psych/visitors/to_ruby.rb:227:in `revive'
        from C:/Ruby192/lib/ruby/1.9.1/psych/visitors/to_ruby.rb:183:in `visit_Psych_Nodes_Mapping'
        from C:/Ruby192/lib/ruby/1.9.1/psych/visitors/visitor.rb:7:in `accept'
.......
(I can post the whole trace if necessary)
那么,我的YAML格式是否糟糕?这是我第一次使用它,所以堆栈跟踪对我来说并没有多大意义。感谢您的帮助

这就是游戏状态下我的YAML文件的外观

--- &20832876 !ruby/object:PlanetDefense::PlayState
options:
  :level: 0
  :score: 0
game_objects: !ruby/object:Chingu::GameObjectList
  game_objects: []
  visible_game_objects: []
  unpaused_game_objects: []
input_clients: []
previous_game_state: !ruby/object:PlanetDefense::MenuState
  options:
  - :start
  - :options
  - :credits
  - :quit
  game_objects: !ruby/object:Chingu::GameObjectList
    game_objects: []
    visible_game_objects: []
    unpaused_game_objects: []
  input_clients: []
  previous_game_state: !!null 
  current: 0
  selected: !ruby/object:Gosu::Color
    __swigtype__: _p_Gosu__Color
  font: !ruby/object:Gosu::Font
    __swigtype__: _p_Gosu__Font
  background_image: !ruby/object:Gosu::Image
    __swigtype__: _p_Gosu__Image
  title_image: !ruby/object:Gosu::Image
    __swigtype__: _p_Gosu__Image
  input:
    :up_arrow:
    - !ruby/object:Method {}
    :down_arrow:
    - !ruby/object:Method {}
    ! ': ':
    - !ruby/object:Method {}
    :enter:
    - !ruby/object:Method {}
    :return:
    - !ruby/object:Method {}
  music: !ruby/object:Gosu::Song
    __swigtype__: _p_Gosu__Song
  game_state_manager: &22575264 !ruby/object:Chingu::GameStateManager
    inside_state: !!null 
    game_states:
    - *20832876
    - &20827872 !ruby/object:PlanetDefense::RingMenu
      opaque: false
      modal: true
      rotation: 1
      x_radius: 200
      y_radius: 100
      font: !ruby/object:Gosu::Font
        __swigtype__: _p_Gosu__Font
      background_image: !ruby/object:Gosu::Image
        __swigtype__: _p_Gosu__Image
      title_image: !ruby/object:Gosu::Image
        __swigtype__: _p_Gosu__Image
      cx: 512
      cy: 459
      caption: !ruby/object:Chingu::Text
        size: 15
        options:
          :rotation_center: :top_left
          :zorder: 4
        parent: *20832876
        paused: false
        visible: true
        color: !ruby/object:Gosu::Color
          __swigtype__: _p_Gosu__Color
        mode: :default
        x: 512
        y: 459
        zorder: 4
        angle: 0
        factor_y: 2.0
        factor_x: 1.8
        factor: 1
        center_x: 0.5
        center_y: 0.5
        text: SAVE GAME
        font: Helvetica
        line_spacing: 1
        align: :left
        max_width: !!null 
        padding: 5
        gosu_font: &20826948 !ruby/object:Gosu::Font
          __swigtype__: _p_Gosu__Font
          name: Arial
        image: !ruby/object:Gosu::Image
          __swigtype__: _p_Gosu__Image
        height: 20
      items:
      - !ruby/object:PlanetDefense::RingMenu::Icon
        options:
          :scale: 2
          :zorder: 10
          :image: &20827932 !ruby/object:Gosu::Image
            __swigtype__: _p_Gosu__Image
          :center: 0.5
        parent: *20832876
        paused: false
        visible: true
        image: *20827932
        color: !ruby/object:Gosu::Color
          __swigtype__: _p_Gosu__Color
        mode: :default
        x: 512.0
        y: 359.0
        zorder: 10
        angle: 0.0
        factor_y: 2
        factor_x: 2
        factor: 2
        center_x: 0.5
        center_y: 0.5
        title: SAVE GAME
        action: !ruby/object:Proc {}
      - !ruby/object:PlanetDefense::RingMenu::Icon
        options:
          :scale: 2
          :zorder: 10
          :image: &20828040 !ruby/object:Gosu::Image
            __swigtype__: _p_Gosu__Image
          :center: 0.5
        parent: *20832876
        paused: false
        visible: true
        image: *20828040
        color: !ruby/object:Gosu::Color
          __swigtype__: _p_Gosu__Color
        mode: :default
        x: 321.78869674096927
        y: 428.09830056250524
        zorder: 10
        angle: 288.0
        factor_y: 2
        factor_x: 2
        factor: 2
        center_x: 0.5
        center_y: 0.5
        title: QUIT TO MENU
        action: !ruby/object:Proc {}
      - !ruby/object:PlanetDefense::RingMenu::Icon
        options:
          :scale: 2
          :zorder: 10
          :image: &20827956 !ruby/object:Gosu::Image
            __swigtype__: _p_Gosu__Image
          :center: 0.5
        parent: *20832876
        paused: false
        visible: true
        image: *20827956
        color: !ruby/object:Gosu::Color
          __swigtype__: _p_Gosu__Color
        mode: :default
        x: 394.44294954150536
        y: 539.9016994374947
        zorder: 10
        angle: 216.0
        factor_y: 2
        factor_x: 2
        factor: 2
        center_x: 0.5
        center_y: 0.5
        title: RETURN TO GAME
        action: !ruby/object:Proc {}
      - !ruby/object:PlanetDefense::RingMenu::Icon
        options:
          :scale: 2
          :zorder: 10
          :image: &20828004 !ruby/object:Gosu::Image
            __swigtype__: _p_Gosu__Image
          :center: 0.5
        parent: *20832876
        paused: false
        visible: true
        image: *20828004
        color: !ruby/object:Gosu::Color
          __swigtype__: _p_Gosu__Color
        mode: :default
        x: 629.5570504584946
        y: 539.9016994374947
        zorder: 10
        angle: 144.0
        factor_y: 2
        factor_x: 2
        factor: 2
        center_x: 0.5
        center_y: 0.5
        title: OPTIONS
        action: !ruby/object:Proc {}
      - !ruby/object:PlanetDefense::RingMenu::Icon
        options:
          :scale: 2
          :zorder: 10
          :image: &20828100 !ruby/object:Gosu::Image
            __swigtype__: _p_Gosu__Image
          :center: 0.5
        parent: *20832876
        paused: false
        visible: true
        image: *20828100
        color: !ruby/object:Gosu::Color
          __swigtype__: _p_Gosu__Color
        mode: :default
        x: 702.2113032590307
        y: 428.0983005625053
        zorder: 10
        angle: 72.0
        factor_y: 2
        factor_x: 2
        factor: 2
        center_x: 0.5
        center_y: 0.5
        title: HIGH SCORES
        action: !ruby/object:Proc {}
      step: 0
      input:
        :left_arrow:
        - !ruby/object:Method {}
        :holding_left_arrow:
        - !ruby/object:Method {}
        :right_arrow:
        - !ruby/object:Method {}
        :holding_right_arrow:
        - !ruby/object:Method {}
        :return:
        - !ruby/object:Method {}
        :released_escape: []
        :released_right_arrow: []
      cursor: !ruby/object:Chingu::GameObject
        options:
          :scale: 2.5
          :image: &20828172 !ruby/object:Gosu::Image
            __swigtype__: _p_Gosu__Image
          :zorder: 5
        parent: *20832876
        paused: false
        visible: true
        image: *20828172
        color: !ruby/object:Gosu::Color
          __swigtype__: _p_Gosu__Color
        mode: :default
        x: 512
        y: 359
        zorder: 5
        angle: 0
        factor_y: 2.5
        factor_x: 2.5
        factor: 2.5
        center_x: 0.5
        center_y: 0.5
      count: 5
      game_state_manager: *22575264
    - &21041148 !ruby/object:PlanetDefense::SaveGame
      options: {}
      game_objects: !ruby/object:Chingu::GameObjectList
        game_objects:
        - &21040788 !ruby/object:PlanetDefense::TextInput
          options:
            :x: 412
            :y: 384
            :width: 200
            :height: 48
            :font: &21040956 !ruby/object:Gosu::Font
              __swigtype__: _p_Gosu__Font
          parent: *21041148
          paused: false
          visible: true
          color: !ruby/object:Gosu::Color
            __swigtype__: _p_Gosu__Color
          mode: :default
          x: 412
          y: 384
          zorder: 100
          angle: 0
          factor_y: 1
          factor_x: 1
          factor: 1
          center_x: 0.5
          center_y: 0.5
          width: 200
          height: 48
          font: *21040956
          text: !ruby/object:Chingu::Text
            size: 15
            options:
              :rotation_center: :top_left
              :x: 412
              :y: 384
            parent: *21041148
            paused: false
            visible: true
            color: !ruby/object:Gosu::Color
              __swigtype__: _p_Gosu__Color
            mode: :default
            x: 412
            y: 384
            zorder: 100
            angle: 0
            factor_y: 1
            factor_x: 1
            factor: 1
            center_x: 0
            center_y: 0
            text: asdf
            font: Arial
            line_spacing: 1
            align: :left
            max_width: !!null 
            padding: 5
            gosu_font: *20826948
            image: !ruby/object:Gosu::Image
              __swigtype__: _p_Gosu__Image
          rect:
          - 392
          - 372
          - 200
          - 48
        visible_game_objects:
        - *21040788
        unpaused_game_objects:
        - *21040788
      input_clients: []
      previous_game_state: *20827872
      font: *21040956
      text_input: *21040788
      background_image: !ruby/object:Gosu::Image
        __swigtype__: _p_Gosu__Image
      title_image: !ruby/object:Gosu::Image
        __swigtype__: _p_Gosu__Image
      selected: !ruby/object:Gosu::Color
        __swigtype__: _p_Gosu__Color
      current: 0
      menu_options:
      - :save game
      - :back
      input:
        :up_arrow:
        - !ruby/object:Method {}
        :down_arrow:
        - !ruby/object:Method {}
        :left_arrow:
        - !ruby/object:Method {}
        :right_arrow:
        - !ruby/object:Method {}
        :return:
        - !ruby/object:Method {}
        :released_return: []
        :a: []
        :s: []
        :d: []
        :f: []
        :released_a: []
        :released_s: []
        :released_d: []
        :released_f: []
      game_state_manager: *22575264
      color: !ruby/object:Gosu::Color
        __swigtype__: _p_Gosu__Color
      rect:
      - 0
      - 522
      - 1024
      - 36.0
    transitional_game_state: !!null 
    transitional_game_state_options: {}
player: &20832516 !ruby/object:PlanetDefense::Player
  vel_max: 7
  acceleration: 1
  deceleration: 0.95
  vel_y: 0.0
  vel_x: 0.0
  x: 512.0
  y: 718.0
  image: !ruby/object:Gosu::Image
    __swigtype__: _p_Gosu__Image
  font: !ruby/object:Gosu::Font
    __swigtype__: _p_Gosu__Font
  particles: !ruby/object:Chingu::Animation
    loop: true
    bounce: false
    file: media/gfx/fireball.png
    index: 0
    delay: 100
    step: 1
    dt: 0
    sub_animations: {}
    frame_actions: []
    width: 32
    height: 32
    frames:
    - !ruby/object:Gosu::Image
      __swigtype__: _p_Gosu__Image
    - !ruby/object:Gosu::Image
      __swigtype__: _p_Gosu__Image
    - !ruby/object:Gosu::Image
      __swigtype__: _p_Gosu__Image
    - !ruby/object:Gosu::Image
      __swigtype__: _p_Gosu__Image
  weapon: !ruby/object:PlanetDefense::Weapon
    player: *20832516
    cooldown_rate: 20
    heatup_amount: 7
    fire_rate: 85
    overheat_penalty: 800
    last_shot: 0
    last_cooldown: 437667665
    last_overheat: 0
    heat: 0
    overheated: false
    gauge_color: !ruby/object:Gosu::Color
      __swigtype__: _p_Gosu__Color
level:
  :number: 0
  :background_image: &20831460 !ruby/object:Gosu::Image
    __swigtype__: _p_Gosu__Image
  :background_music: &20831412 !ruby/object:Gosu::Song
    __swigtype__: _p_Gosu__Song
  :time: 15000
background_image: *20831460
music: *20831412
planet_health: 1000
lives: 3
life_image: !ruby/object:Gosu::Image
  __swigtype__: _p_Gosu__Image
font: !ruby/object:Gosu::Font
  __swigtype__: _p_Gosu__Font
health_font: !ruby/object:Gosu::Font
  __swigtype__: _p_Gosu__Font
count: 13
pause: true
running: true
win: false
hit: false
game_start: 437666494
time_allowed: 15000
menu: *20827872
game_state_manager: *22575264
input:
  :released_return: []
remaining_time: 13830

我只是走了一条类似的道路。在YAML文件中查找以下表格行:

action: !ruby/object:Proc {}
YAML无法处理lambdas或proc(没有合理的方法序列化它们)。如果您有权访问生成YAML对象的代码,也许可以用实际的对象和方法调用替换lambda

例如,如果生成此YAML转储的代码:

icon = PlanetDefense::RingMenu::Icon.new
icon.action = lambda {|arg1| do_something_with(arg1)}
您可以编写一个类,其唯一任务是替换lambda:

class IconAction
  def call(arg1)
    do_something_with(arg1)
  end
end
...
icon = PlanetDefense::RingMenu::Icon.new
icon.action = IconAction.new

我只是走了一条类似的道路。在YAML文件中查找以下表格行:

action: !ruby/object:Proc {}
YAML无法处理lambdas或proc(没有合理的方法序列化它们)。如果您有权访问生成YAML对象的代码,也许可以用实际的对象和方法调用替换lambda

例如,如果生成此YAML转储的代码:

icon = PlanetDefense::RingMenu::Icon.new
icon.action = lambda {|arg1| do_something_with(arg1)}
您可以编写一个类,其唯一任务是替换lambda:

class IconAction
  def call(arg1)
    do_something_with(arg1)
  end
end
...
icon = PlanetDefense::RingMenu::Icon.new
icon.action = IconAction.new