Sha256: d5d85e73814be3e62af8c1f27f1a44a7992168f20132ae1c1d3e6ce1c18bfa49
Contents?: true
Size: 1.58 KB
Versions: 3
Compression:
Stored size: 1.58 KB
Contents
module Imb
# This class represents the mail piece's serial number.
class SerialNumber
# Turn the argument into a SerialNumber if possible. Accepts:
# * SerialNumber
# * String
# * Integer
def self.coerce(o)
case o
when SerialNumber
o
when String
new(o.to_i)
when Integer
new(o)
else
raise ArgumentError, 'Cannot coerce to SerialNumber'
end
end
# Create a new serial number from an integer.
def initialize(value)
@value = value
end
# Validate the value. Raises ArgumentError if out of range.
# * +long_mailer_id+ - truthy if the mailer ID is long (9 digits).
def validate(long_mailer_id)
range = 0..max_value(long_mailer_id)
unless range === @value
raise ArgumentError, "Must be #{range}"
end
end
# Return true if +o+ is equal. +o+ may be any object which ::coerce
# can turn into a SerialNumber.
def ==(o)
SerialNumber.coerce(o).to_i == to_i
rescue ArgumentError
false
end
# Add this object's value to target, shifting it left as many
# digts as are needed to make room.
def shift_and_add_to(target, long_mailer_id)
target * 10 ** num_digits(long_mailer_id) + to_i
end
# Return the integer value of the serial number
def to_i
@value
end
private
def max_value(long_mailer_id)
max_value = 10 ** num_digits(long_mailer_id) - 1
end
def num_digits(long_mailer_id)
if long_mailer_id
6
else
9
end
end
end
end
Version data entries
3 entries across 3 versions & 1 rubygems