module Workflower
  class Error < StandardError; end

  class TransitionHalted < Error
    attr_reader :halted_because

    def initialize(msg = nil)
      @halted_because = msg
      super msg
    end
  end

  class NoTransitionAllowed < Error; end

  class WorkflowerError < Error; end

  class WorkflowDefinitionError < Error; end
end