ruby - 是否有任何源代码分析工具检测 Ruby 中未使用的参数？

Question

如何检测 Ruby 中未使用的参数？

我知道的选项包括

• 对 TDD 严格。
• Heckle(由于 ParseTree 问题，目前仅适用于 Ruby 1.8)
• 使用 RubyMine 等 IDE 检测未使用的参数或自动进行重构。

但是否有任何源代码分析工具或警告选项允许您检测未使用的参数？

背景:我正在做一些重构。我改变了(代码略有简化):

# Not within the Foo class (therefore can't be as easily accessed by unit testing)
# and in addition, the name of the configuration file is hard-wired
def parse_configuration
  raw_configuration = YAML.load_file("configuration.yml")
  # Do stuff with raw_configuration to produce configuration_options_for_foo
  return configuration_options_for_foo
end

if __FILE__ == $0
  configuration_options_for_foo = parse_configuration
  foo = Foo.new(configuration_options_for_foo)
end

到

class Foo
  # Now unit tests can call Foo.new_using_yaml("configuration.yml")
  # or use "test_configuration.yml"
  def self.new_using_yaml(yaml_filename)
    # Where I went wrong, forgetting to replace "configuration.yml" with yaml_filename
    raw_configuration = YAML.load_file("configuration.yml")
    # Do stuff with raw_configuration to produce configuration_options_for_foo
    new(configuration_options_for_foo)
  end
end

if __FILE__ == $0
  foo = Foo.new_using_yaml("configuration.yml")
end

Answer 1

我认为激光可以做到这一点。

它还处于 alpha-y 阶段，但似乎可以按照您的意愿行事。

http://github.com/michaeledgar/laser