constants = require './constants'

# A CBOR Simple Value that does not map onto a known constant.
class Simple
  # Create a Simple with the given value
  # @param value [Integer] the simple value's integer value
  constructor: (@value)->
    unless typeof @value == 'number'
      throw new Error "Invalid Simple type: #{typeof @value}"

    unless (0 <= value < 256) && ((@value|0) == @value)
      throw new Error "value must be a small positive integer: #{@value}"

  # Convert to a string
  # @return [String]
  toString: ()->
    "simple(#{@value})"

  # @nodoc
  encodeCBOR: (gen)->
    gen._packInt @value, constants.MT.SIMPLE_FLOAT

  # Is the given object a Simple?
  # @param obj the object to check
  # @return [Boolean]
  @isSimple = (obj)->
    obj instanceof Simple

module.exports = Simple