a function to abort a class and cause all resource in the class to NOT be applied, without failing compilation like fail()

gistfile1.rb

Puppet::Parser::Functions::newfunction(:failclass, :doc => 'Calling this function will immediately fail the class in current scope and mark all contained resources as failed.') do |args|

  raise ArgumentError, ("failclass(): call with a single argument, the message.)") if args.length != 1
  
  # build a resource
  p_resource = Puppet::Parser::Resource.new(:whit, args[0], :scope => self, :source => resource)
  
  # then add requirements to all other resources in scope.
  # how do i select all resources in current scope?  
  compiler.catalog.resources.select{ |x| x[:scope] == self }.each do |res|
    reqs << Puppet::Relationship::new(p_resource, res)
  end
  
  # mark the resource as failed.
  p_resource.fail(args[0])
  
  # add to catalog
  compiler.add_resource(self, p_resource)
  
end