Class: SecId::SEDOL

Inherits:
Base
  • Object
show all
Defined in:
lib/sec_id/sedol.rb

Overview

en.wikipedia.org/wiki/SEDOL

Constant Summary collapse

ID_REGEX = 
/\A
  (?<identifier>[0-9BCDFGHJKLMNPQRSTVWXYZ]{6})
  (?<check_digit>\d)?
\z/x.freeze
CHARACTER_WEIGHTS = 
[1, 3, 1, 7, 3, 9].freeze

Instance Attribute Summary

Attributes inherited from Base

#check_digit, #full_number, #identifier

Instance Method Summary collapse

Methods inherited from Base

check_digit, restore!, #restore!, #to_s, valid?, #valid?, valid_format?, #valid_format?

Constructor Details

#initialize(sedol) ⇒ SEDOL

Returns a new instance of SEDOL.



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# File 'lib/sec_id/sedol.rb', line 13

def initialize(sedol)
  sedol_parts = parse sedol
  @identifier = sedol_parts[:identifier]
  @check_digit = sedol_parts[:check_digit]&.to_i
end

Instance Method Details

#calculate_check_digit ⇒ Object

Raises:



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# File 'lib/sec_id/sedol.rb', line 19

def calculate_check_digit
  return mod_10(weighted_sum) if valid_format?

  raise InvalidFormatError, "SEDOL '#{full_number}' is invalid and check-digit cannot be calculated!"
end