class RSpec::Core::Formatters::DeprecationFormatter

def deprecation(data)
  return if @seen_deprecations.include?(data)
  @count += 1
  printer.print_deprecation_message data
  @seen_deprecations << data
end

def deprecation_message_for(data)
  if data[:message]
    SpecifiedDeprecationMessage.new(data)
  else
    GeneratedDeprecationMessage.new(data)
  end
end

def deprecation_summary
  printer.deprecation_summary
end

def initialize(deprecation_stream, summary_stream)
  @deprecation_stream = deprecation_stream
  @summary_stream = summary_stream
  @seen_deprecations = Set.new
  @count = 0
end

def printer
  @printer ||= case deprecation_stream
               when File
                 ImmediatePrinter.new(FileStream.new(deprecation_stream), summary_stream, self)
               when RaiseErrorStream
                 ImmediatePrinter.new(deprecation_stream, summary_stream, self)
               else
                 DelayedPrinter.new(deprecation_stream, summary_stream, self)
               end
end

def start(example_count=nil)
  #no-op to fix #966
end