From 89061d5b33baa7e8f4e3486d0c7ccf2447500b13 Mon Sep 17 00:00:00 2001
From: m-holger <m-holger@kubitscheck.org>
Date: Fri, 12 Aug 2022 15:14:11 +0100
Subject: Change QPDF_Unresolved::create method to take QPDF* and QPDFObjGen
 parameters

---
 include/qpdf/QPDFValue.hh       | 29 +++++++++++++++++++++++++++--
 libqpdf/QPDF.cc                 |  5 ++---
 libqpdf/QPDF_Unresolved.cc      | 12 +++++++-----
 libqpdf/qpdf/QPDF_Unresolved.hh |  4 ++--
 4 files changed, 38 insertions(+), 12 deletions(-)

diff --git a/include/qpdf/QPDFValue.hh b/include/qpdf/QPDFValue.hh
index 4ed3a0de..8b4f53b5 100644
--- a/include/qpdf/QPDFValue.hh
+++ b/include/qpdf/QPDFValue.hh
@@ -25,6 +25,7 @@
 #include <qpdf/Constants.h>
 #include <qpdf/DLL.h>
 #include <qpdf/JSON.hh>
+#include <qpdf/QPDFObjGen.hh>
 #include <qpdf/Types.h>
 
 #include <string>
@@ -73,11 +74,21 @@ class QPDFValue
     {
         return parsed_offset;
     }
+    QPDF*
+    getQPDF()
+    {
+        return qpdf;
+    }
+    QPDFObjGen
+    getObjGen()
+    {
+        return og;
+    }
 
   protected:
     QPDFValue() :
         type_code(::ot_uninitialized),
-        type_name("uninitilized")
+        type_name("uninitialized")
     {
     }
     QPDFValue(qpdf_object_type_e type_code, char const* type_name) :
@@ -85,7 +96,17 @@ class QPDFValue
         type_name(type_name)
     {
     }
-
+    QPDFValue(
+        qpdf_object_type_e type_code,
+        char const* type_name,
+        QPDF* qpdf,
+        QPDFObjGen const& og) :
+        type_code(type_code),
+        type_name(type_name),
+        qpdf(qpdf),
+        og(og)
+    {
+    }
     virtual void
     releaseResolved()
     {
@@ -100,6 +121,10 @@ class QPDFValue
     qpdf_offset_t parsed_offset{-1};
     const qpdf_object_type_e type_code;
     char const* type_name;
+
+  protected:
+    QPDF* qpdf{nullptr};
+    QPDFObjGen og;
 };
 
 #endif // QPDFVALUE_HH
diff --git a/libqpdf/QPDF.cc b/libqpdf/QPDF.cc
index 553c1a41..f33e2920 100644
--- a/libqpdf/QPDF.cc
+++ b/libqpdf/QPDF.cc
@@ -2183,9 +2183,8 @@ QPDF::getObject(QPDFObjGen const& og)
     if (!og.isIndirect()) {
         return QPDFObjectHandle::newNull();
     }
-    // auto obj = (og.getObj() != 0) ? resolve(og) : QPDF_Null::create();
-    if (!m->obj_cache.count(og)) {
-        m->obj_cache[og] = ObjCache(QPDF_Unresolved::create(), -1, -1);
+    if (!isCached(og)) {
+        m->obj_cache[og] = ObjCache(QPDF_Unresolved::create(this, og), -1, -1);
     }
     return newIndirect(og, m->obj_cache[og].object);
 }
diff --git a/libqpdf/QPDF_Unresolved.cc b/libqpdf/QPDF_Unresolved.cc
index 40d4874e..f824a9a6 100644
--- a/libqpdf/QPDF_Unresolved.cc
+++ b/libqpdf/QPDF_Unresolved.cc
@@ -2,21 +2,23 @@
 
 #include <stdexcept>
 
-QPDF_Unresolved::QPDF_Unresolved() :
-    QPDFValue(::ot_unresolved, "unresolved")
+QPDF_Unresolved::QPDF_Unresolved(QPDF* qpdf, QPDFObjGen const& og) :
+    QPDFValue(::ot_unresolved, "unresolved", qpdf, og)
 {
 }
 
 std::shared_ptr<QPDFObject>
-QPDF_Unresolved::create()
+QPDF_Unresolved::create(QPDF* qpdf, QPDFObjGen const& og)
 {
-    return do_create(new QPDF_Unresolved());
+    return do_create(new QPDF_Unresolved(qpdf, og));
 }
 
 std::shared_ptr<QPDFObject>
 QPDF_Unresolved::shallowCopy()
 {
-    return create();
+    throw std::logic_error(
+        "attempted to shallow copy unresolved QPDFObjectHandle");
+    return create(qpdf, og);
 }
 
 std::string
diff --git a/libqpdf/qpdf/QPDF_Unresolved.hh b/libqpdf/qpdf/QPDF_Unresolved.hh
index c1231590..efcf4e3d 100644
--- a/libqpdf/qpdf/QPDF_Unresolved.hh
+++ b/libqpdf/qpdf/QPDF_Unresolved.hh
@@ -7,13 +7,13 @@ class QPDF_Unresolved: public QPDFValue
 {
   public:
     virtual ~QPDF_Unresolved() = default;
-    static std::shared_ptr<QPDFObject> create();
+    static std::shared_ptr<QPDFObject> create(QPDF* qpdf, QPDFObjGen const& og);
     virtual std::shared_ptr<QPDFObject> shallowCopy();
     virtual std::string unparse();
     virtual JSON getJSON(int json_version);
 
   private:
-    QPDF_Unresolved();
+    QPDF_Unresolved(QPDF* qpdf, QPDFObjGen const& og);
 };
 
 #endif // QPDF_UNRESOLVED_HH
-- 
cgit v1.2.3-54-g00ecf