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


16
17
18
19
20
21
22
23
24
25
26
27
28
# 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