module Psych::Comments::NodeUtils

# File lib/psych/comments/emitter.rb, line 53
                def has_anchor(node)
  case node
  when Psych::Nodes::Scalar, Psych::Nodes::Mapping, Psych::Nodes::Sequence
    !!node.anchor
  else
    false
  end
end

# File lib/psych/comments/emitter.rb, line 49
                def has_bullet(node)
  node.is_a?(Psych::Nodes::Sequence) && !node.children.empty?
end

# File lib/psych/comments/emitter.rb, line 38
                def single_line(node)
  case node
  when Psych::Nodes::Scalar, Psych::Nodes::Alias
    node.leading_comments.empty? && node.trailing_comments.empty?
  when Psych::Nodes::Mapping, Psych::Nodes::Sequence
    node.children.empty?
  else
    false
  end
end

# File lib/psych/comments/emitter.rb, line 19
                def stringify_adjust_scalar(node, indent_str = 0)
  node2 = Psych::Nodes::Scalar.new(node.value, nil, nil, node.plain, node.quoted, node.style)
  if node.tag
    if node.style == Psych::Nodes::Scalar::PLAIN
      node2.plain = true
    else
      node2.quoted = true
    end
  end

  s = stringify_node(node2).sub(/\n\z/, "")
  if node.style == Psych::Nodes::Scalar::DOUBLE_QUOTED || node.style == Psych::Nodes::Scalar::SINGLE_QUOTED || node.style == Psych::Nodes::Scalar::PLAIN
    s = s.gsub(/\s*\n\s*/, " ")
  else
    s = s.gsub(/\n/, "\n#{indent_str}")
  end
  s.gsub(/\n\s+$/, "\n")
end

# File lib/psych/comments/emitter.rb, line 4
                def stringify_node(node)
  case node
  when Psych::Nodes::Stream
    node.to_yaml
  when Psych::Nodes::Document
    strm = Psych::Nodes::Stream.new
    strm.children << node
    stringify_node(strm)
  else
    doc = Psych::Nodes::Document.new([], [], true)
    doc.children << node
    stringify_node(doc)
  end
end