class LegacyFacter::Core::DirectedGraph

Public Instance Methods

acyclic?() click to toggle source
# File lib/facter/custom_facts/core/directed_graph.rb, line 11
def acyclic?
  cycles.empty?
end
cycles() click to toggle source
# File lib/facter/custom_facts/core/directed_graph.rb, line 15
def cycles
  cycles = []
  each_strongly_connected_component do |component|
    cycles << component if component.size > 1
  end
  cycles
end
tsort() click to toggle source
Calls superclass method
# File lib/facter/custom_facts/core/directed_graph.rb, line 29
def tsort
  missing = Set.new(values.flatten) - Set.new(keys)

  unless missing.empty?
    raise MissingVertex, "Cannot sort elements; cannot depend on missing elements #{missing.to_a}"
  end

  super
rescue TSort::Cyclic
  raise CycleError, "Cannot sort elements; found the following cycles: #{cycles.inspect}"
end
tsort_each_child(node, &block) click to toggle source
# File lib/facter/custom_facts/core/directed_graph.rb, line 25
def tsort_each_child(node, &block)
  fetch(node, []).each(&block)
end