module Net::IMAP::NumValidator

# File lib/net/imap/data_encoding.rb, line 204
def ensure_mod_sequence_value(num)
  return num if valid_mod_sequence_value?(num)

  msg = "mod_sequence_value must be unsigned 64-bit integer: #{num}"
  raise DataFormatError, msg
end

# File lib/net/imap/data_encoding.rb, line 188
def ensure_number(num)
  return num if valid_number?(num)

  msg = "number must be unsigned 32-bit integer: #{num}"
  raise DataFormatError, msg
end

# File lib/net/imap/data_encoding.rb, line 196
def ensure_nz_number(num)
  return num if valid_nz_number?(num)

  msg = "nz_number must be non-zero unsigned 32-bit integer: #{num}"
  raise DataFormatError, msg
end

# File lib/net/imap/data_encoding.rb, line 179
def valid_mod_sequence_value?(num)
  # mod-sequence-value  = 1*DIGIT
  #                        ; Positive unsigned 64-bit integer
  #                        ; (mod-sequence)
  #                        ; (1 <= n < 18,446,744,073,709,551,615)
  num >= 1 && num < 18446744073709551615
end

# File lib/net/imap/data_encoding.rb, line 161
def valid_number?(num)
  # [RFC 3501]
  # number          = 1*DIGIT
  #                    ; Unsigned 32-bit integer
  #                    ; (0 <= n < 4,294,967,296)
  num >= 0 && num < 4294967296
end

# File lib/net/imap/data_encoding.rb, line 170
def valid_nz_number?(num)
  # [RFC 3501]
  # nz-number       = digit-nz *DIGIT
  #                    ; Non-zero unsigned 32-bit integer
  #                    ; (0 < n < 4,294,967,296)
  num != 0 && valid_number?(num)
end