module Psych::JSON::YAMLEvents

def end_document implicit_end = !streaming?
  super(implicit_end)
end

def scalar value, anchor, tag, plain, quoted, style
  if "tag:yaml.org,2002:null" == tag
    super('null', nil, nil, true, false, Nodes::Scalar::PLAIN)
  else
    super
  end
end

def start_document version, tag_directives, implicit
  super(version, tag_directives, !streaming?)
end

def start_mapping anchor, tag, implicit, style
  super(anchor, nil, true, Nodes::Mapping::FLOW)
end

def start_sequence anchor, tag, implicit, style
  super(anchor, nil, true, Nodes::Sequence::FLOW)
end