ruby/rubygems · error · Gem::Exception

ruby_code case not handled: #{obj.class}

Error message

ruby_code case not handled: #{obj.class}

What it means

Error "ruby_code case not handled: #{obj.class}" thrown in ruby/rubygems.

Source

Thrown at lib/rubygems/specification.rb:2267

  # object.

  def ruby_code(obj)
    case obj
    when String             then obj.dump + ".freeze"
    when Array              then "[" + obj.map {|x| ruby_code x }.join(", ") + "]"
    when Hash               then
      seg = obj.keys.sort.map {|k| "#{k.to_s.dump} => #{obj[k].to_s.dump}" }
      "{ #{seg.join(", ")} }"
    when Gem::Version       then ruby_code(obj.to_s)
    when DateLike           then obj.strftime("%Y-%m-%d").dump
    when Time               then obj.strftime("%Y-%m-%d").dump
    when Numeric            then obj.inspect
    when true, false, nil   then obj.inspect
    when Gem::Platform      then "Gem::Platform.new(#{ruby_code obj.to_a})"
    when Gem::Requirement   then
      list = obj.as_list
      "Gem::Requirement.new(#{ruby_code(list.size == 1 ? obj.to_s : list)})"
    else raise Gem::Exception, "ruby_code case not handled: #{obj.class}"
    end
  end

  private :ruby_code

  ##
  # List of dependencies that will automatically be activated at runtime.

  def runtime_dependencies
    dependencies.select(&:runtime?)
  end

  ##
  # True if this gem has the same attributes as +other+.

  def same_attributes?(spec)
    @@attributes.all? {|name, _default| send(name) == spec.send(name) }
  end

View on GitHub (pinned to 86cbb817a3)

Solutions

1. This is an internal RubyGems gap for an unsupported object type; report it at https://github.com/rubygems/rubygems/issues

When it happens

Trigger: Thrown at lib/rubygems/specification.rb:2267 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of ruby/rubygems@86cbb817a3 (2026-08-23). Data as JSON: /api/errors/a4f100aee7406547. Report an issue: GitHub.