lib/psych/nodes/node.rb


1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40

require 'stringio'

module Psych
  module Nodes
    ###
    # The base class for any Node in a YAML parse tree.  This class should
    # never be instantiated.
    class Node
      # The children of this node
      attr_reader :children

      # An associated tag
      attr_reader :tag

      # Create a new Psych::Nodes::Node
      def initialize
        @children = []
      end

      ###
      # Convert this node to Ruby.
      #
      # See also Psych::Visitors::ToRuby
      def to_ruby
        Visitors::ToRuby.new.accept self
      end
      alias :transform :to_ruby

      ###
      # Convert this node to YAML.
      #
      # See also Psych::Visitors::Emitter
      def to_yaml
        io = StringIO.new
        Visitors::Emitter.new(io).accept self
        io.string
      end
    end
  end
end