class FFI_Yajl::Encoder

def self.raise_error_for_status(status, token = nil)
  # scrub token to valid utf-8 since we may be issuing an exception on an invalid utf-8 token
  token = token.to_s.force_encoding("UTF-8")
  if token.respond_to?(:scrub)
    token.scrub!
  else
    token.encode!("UTF-16le", undef: :replace, invalid: :replace).encode!("UTF-8")
  end
  case status
  when 1 # yajl_gen_keys_must_be_strings
    raise FFI_Yajl::EncodeError, "YAJL internal error: attempted use of non-string object as key"
  when 2 # yajl_max_depth_exceeded
    raise FFI_Yajl::EncodeError, "Max nesting depth exceeded"
  when 3 # yajl_gen_in_error_state
    raise FFI_Yajl::EncodeError, "YAJL internal error: a generator function (yajl_gen_XXX) was called while in an error state"
  when 4 # yajl_gen_generation_complete
    raise FFI_Yajl::EncodeError, "YAJL internal error: attempted to encode to an already-complete document"
  when 5 # yajl_gen_invalid_number
    raise FFI_Yajl::EncodeError, "Invalid number: cannot encode Infinity, -Infinity, or NaN"
  when 6 # yajl_gen_no_buf
    raise FFI_Yajl::EncodeError, "YAJL internal error: yajl_gen_get_buf was called, but a print callback was specified, so no internal buffer is available"
  when 7 # yajl_gen_invalid_string
    raise FFI_Yajl::EncodeError, "Invalid UTF-8 string '#{token}': cannot encode to UTF-8"
  else
    raise FFI_Yajl::EncodeError, "Unknown YAJL Error (#{status}), please report this as a bug"
  end
end