From c0952892087b4bfe9dfc562082ccf8eea8312548 Mon Sep 17 00:00:00 2001
From: Paul Beckingham <paul@beckingham.net>
Date: Sat, 26 Sep 2015 15:33:45 -0400
Subject: [PATCH] ISO8601d: Added ::operator+

---
 src/ISO8601.cpp | 6 ++++++
 src/ISO8601.h   | 2 ++
 2 files changed, 8 insertions(+)

diff --git a/src/ISO8601.cpp b/src/ISO8601.cpp
index c118ec65a..8a4db0462 100644
--- a/src/ISO8601.cpp
+++ b/src/ISO8601.cpp
@@ -1129,6 +1129,12 @@ bool ISO8601d::sameYear (const ISO8601d& rhs) const
   return this->year () == rhs.year ();
 }
 
+////////////////////////////////////////////////////////////////////////////////
+ISO8601d ISO8601d::operator+ (const int delta)
+{
+  return ISO8601d (_date + delta);
+}
+
 ////////////////////////////////////////////////////////////////////////////////
 void ISO8601p::clear ()
 {
diff --git a/src/ISO8601.h b/src/ISO8601.h
index 98ecb94db..d9dd25462 100644
--- a/src/ISO8601.h
+++ b/src/ISO8601.h
@@ -78,6 +78,8 @@ public:
   bool sameMonth  (const ISO8601d&) const;
   bool sameYear   (const ISO8601d&) const;
 
+  ISO8601d operator+  (const int);
+
 private:
   void clear ();
   bool parse_date_time     (Nibbler&);