Add `nullify` method to `BaseHandle` for setting objects to a mutable null.

m-holger
1 parent 277779a3
Showing 2 changed files with 10 additions and 0 deletions
include/qpdf/ObjectHandle.hh
libqpdf/qpdf/QPDFObjectHandle_private.hh
@@ -130,6 +130,8 @@ namespace qpdf
         inline void assign(qpdf_object_type_e required, BaseHandle const& other);
         inline void assign(qpdf_object_type_e required, BaseHandle&& other);
  
+        inline void nullify();
+
         std::string description() const;
  
         void no_ci_warn_if(bool condition, std::string const& warning) const;
@@ -812,6 +812,14 @@ namespace qpdf
         return !obj || type_code() == ::ot_null;
     }
  
+    inline void
+    BaseHandle::nullify()
+    {
+        if (obj) {
+            obj = QPDFObject::create<QPDF_Null>();
+        }
+    }
+
     inline qpdf_offset_t
     BaseHandle::offset() const
     {