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require 'stringio' require 'psych/class_loader' require 'psych/scalar_scanner' module Psych module Nodes ### # The base class for any Node in a YAML parse tree. This class should # never be instantiated. class Node include Enumerable # The children of this node attr_reader :children # An associated tag attr_reader :tag # Create a new Psych::Nodes::Node def initialize @children = [] end ### # Iterate over each node in the tree. Yields each node to +block+ depth # first. def each &block return enum_for :each unless block_given? Visitors::DepthFirst.new(block).accept self end ### # Convert this node to Ruby. # # See also Psych::Visitors::ToRuby def to_ruby Visitors::ToRuby.create.accept(self) end alias :transform :to_ruby ### # Convert this node to YAML. # # See also Psych::Visitors::Emitter def yaml io = nil, options = {} real_io = io || StringIO.new(''.encode('utf-8')) Visitors::Emitter.new(real_io, options).accept self return real_io.string unless io io end alias :to_yaml :yaml end end end