module Rails

def application 

def application
  @@application ||= nil
end

def application=(application) 

def application=(application)
  @@application = application
end

def backtrace_cleaner 

def backtrace_cleaner
  @@backtrace_cleaner ||= begin
    # Relies on Active Support, so we have to lazy load to postpone definition until AS has been loaded
    require 'rails/backtrace_cleaner'
    Rails::BacktraceCleaner.new
  end
end

def cache 

def cache
  RAILS_CACHE
end

def configuration

The Configuration instance used to configure the Rails environment 
def configuration
  application.config
end

def env 

def env
  @_env ||= ActiveSupport::StringInquirer.new(ENV["RAILS_ENV"] || ENV["RACK_ENV"] || "development")
end

def env=(environment) 

def env=(environment)
  @_env = ActiveSupport::StringInquirer.new(environment)
end

def initialize! 

def initialize!
  application.initialize!
end

def initialized=(initialized) 

def initialized=(initialized)
  @@initialized ||= initialized
end

def initialized? 

def initialized?
  @@initialized || false
end

def logger 

def logger
  @@logger ||= nil
end

def logger=(logger) 

def logger=(logger)
  @@logger = logger
end

def public_path 

def public_path
  application && application.paths.public.to_a.first
end

def public_path=(path) 

def public_path=(path)
  ActiveSupport::Deprecation.warn "Setting Rails.public_path= is deprecated. " <<
    "Please set paths.public = in config/application.rb instead.", caller
end

def root 

def root
  application && application.config.root
end

def version 

def version
  VERSION::STRING
end