module JSON::TruffleRuby::Generator::GeneratorMethods::Hash

def json_shift(state)
  state.object_nl.empty? or return ''
  state.indent * state.depth
end

def json_transform(state)
  depth = state.depth += 1
  if empty?
    state.depth -= 1
    return '{}'
  end
  delim = ",#{state.object_nl}"
  result = +"{#{state.object_nl}"
  first = true
  indent = !state.object_nl.empty?
  each { |key, value|
    result << delim unless first
    result << state.indent * depth if indent
    key_str = key.to_s
    if key_str.is_a?(String)
      key_json = key_str.to_json(state)
    else
      raise TypeError, "#{key.class}#to_s returns an instance of #{key_str.class}, expected a String"
    end
    result = +"#{result}#{key_json}#{state.space_before}:#{state.space}"
    if state.strict? && !(false == value || true == value || nil == value || String === value || Array === value || Hash === value || Integer === value || Float === value)
      raise GeneratorError, "#{value.class} not allowed in JSON"
    elsif value.respond_to?(:to_json)
      result << value.to_json(state)
    else
      result << %{"#{String(value)}"}
    end
    first = false
  }
  depth = state.depth -= 1
  unless first
    result << state.object_nl
    result << state.indent * depth if indent
  end
  result << '}'
  result
end

def to_json(state = nil, *)
  state = State.from_state(state)
  state.check_max_nesting
  json_transform(state)
end