From 9f1094ef367a5d66dd87c114f73d8c4e5f8c3e08 Mon Sep 17 00:00:00 2001
From: Ivan Kohler <ivan@freeside.biz>
Date: Tue, 6 May 2014 01:07:58 -0700
Subject: [PATCH] Allow use of our subroutines as class methods, patch from
 Adam Kennedy, thanks!

---
 Changes       |  2 ++
 CreditCard.pm | 11 ++++++++++-
 2 files changed, 12 insertions(+), 1 deletion(-)

diff --git a/Changes b/Changes
index d3c2183..9a90f30 100644
--- a/Changes
+++ b/Changes
@@ -3,6 +3,8 @@ Revision history for Perl extension Business::CreditCard.
 0.33  unreleased
         - With $Country explicity to CA, fix identification of JCB 3529-3589
           as Discover
+        - Allow use of our subroutines as class methods, patch from Adam
+          Kennedy, thanks!
 
 0.32  Thu Feb 21 16:02:42 PST 2013
         - Add Israeli Isracard (no checksum yet)
diff --git a/CreditCard.pm b/CreditCard.pm
index 4fe901e..4fdcebd 100644
--- a/CreditCard.pm
+++ b/CreditCard.pm
@@ -132,7 +132,7 @@ types.  Lee also contributed a working test.pl.  Alexandr Ciornii
 
 Copyright (C) 1995,1996,1997 Jon Orwant
 Copyright (C) 2001-2006 Ivan Kohler
-Copyright (C) 2007-2013 Freeside Internet Services, Inc.
+Copyright (C) 2007-2014 Freeside Internet Services, Inc.
 
 This library is free software; you can redistribute it and/or modify
 it under the same terms as Perl itself, either Perl version 5.8.8 or,
@@ -174,6 +174,9 @@ providing credit card number verification (LUHN checking).
 ## a lot more than just 6011*, they don't handle processing agreements, etc.
 
 sub cardtype {
+    # Allow use as a class method
+    shift if UNIVERSAL::isa( $_[0], 'Business::CreditCard' );
+
     my ($number) = @_;
 
     $number =~ s/[\s\-]//go;
@@ -242,6 +245,9 @@ sub cardtype {
 }
 
 sub generate_last_digit {
+    # Allow use as a class method
+    shift if UNIVERSAL::isa( $_[0], 'Business::CreditCard' );
+
     my ($number) = @_;
 
     die "invalid operation" if length($number) == 8 || length($number) == 9;
@@ -274,6 +280,9 @@ sub generate_last_digit {
 #  $type = '' if $ccn % 10;
 #  return $type;
 sub validate {
+    # Allow use as a class method
+    shift if UNIVERSAL::isa( $_[0], 'Business::CreditCard' );
+
     my ($number) = @_;
 
     my ($i, $sum, $weight);
-- 
2.11.0