Method: PEROBS::BTreeNode#to_s

Defined in:
lib/perobs/BTreeNode.rb

#to_s ⇒ Object 



822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
 
# File 'lib/perobs/BTreeNode.rb', line 822

def to_s
  str = ''

  traverse do |node, position, stack|
    if position == 0
      begin
        str += "#{node.parent ? node.parent.tree_prefix + '  +' : 'o'}" +
          "#{node.tree_branch_mark}-" +
          "#{node.keys.first.nil? ? '--' : 'v-'}#{node.tree_summary}\n"
      rescue
        str += "@@@@@@@@@@\n"
      end
    else
      begin
        if node.is_leaf
          if node.keys[position - 1]
            str += "#{node.tree_prefix}  |" +
              "[#{node.keys[position - 1]}, " +
              "#{node.values[position - 1]}]\n"
          end
        else
          if node.keys[position - 1]
            str += "#{node.tree_prefix}  #{node.keys[position - 1]}\n"
          end
        end
      rescue
        str += "@@@@@@@@@@\n"
      end
    end
  end

  str
end