From 56e9bcabe984acd4479ff7fef9a2a0ca669abc76 Mon Sep 17 00:00:00 2001
From: m-holger <m-holger@kubitscheck.org>
Date: Sun, 14 Aug 2022 01:05:32 +0100
Subject: Add methods QPDFObject::setObjGen and QPDFObject::resetObjGen

Also, modify QPDFObject::swapWith to update the ObjGens of the swapped
objects.

Modify QPDF::newIndirect and QPDF::updateCache to keep object ObjGens
up to date.
---
 include/qpdf/QPDFObject.hh | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)

(limited to 'include')

diff --git a/include/qpdf/QPDFObject.hh b/include/qpdf/QPDFObject.hh
index 198488dd..7bb7c6e1 100644
--- a/include/qpdf/QPDFObject.hh
+++ b/include/qpdf/QPDFObject.hh
@@ -133,7 +133,25 @@ class QPDFObject
         auto v = value;
         value = o->value;
         o->value = v;
+        auto og = value->og;
+        value->og = o->value->og;
+        o->value->og = og;
     }
+
+    // The following two methods are for use by class QPDF only
+    void
+    setObjGen(QPDF* qpdf, QPDFObjGen const& og)
+    {
+        value->qpdf = qpdf;
+        value->og = og;
+    }
+    void
+    resetObjGen()
+    {
+        value->qpdf = nullptr;
+        value->og = QPDFObjGen();
+    }
+
     bool
     isUnresolved()
     {
-- 
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