Module: ClosureTree::Digraphs::ClassMethods

Defined in:
lib/closure_tree/digraphs.rb

Instance Method Summary collapse

Instance Method Details

#to_dot_digraph(tree_scope) ⇒ Object

Renders the given scope as a DOT digraph, suitable for rendering by Graphviz



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# File 'lib/closure_tree/digraphs.rb', line 16

def to_dot_digraph(tree_scope)
  id_to_instance = tree_scope.reduce({}) { |h, ea| h[ea.id] = ea; h }
  output = StringIO.new
  output << "digraph G {\n"
  tree_scope.each do |ea|
    if id_to_instance.key? ea._ct_parent_id
      output << "  \"#{ea._ct_parent_id}\" -> \"#{ea._ct_id}\"\n"
    end
    output << "  \"#{ea._ct_id}\" [label=\"#{ea.to_digraph_label}\"]\n"
  end
  output << "}\n"
  output.string
end