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diff --git a/include/qpdf/QPDFValue.hh b/include/qpdf/QPDFValue.hh
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+// Copyright (c) 2005-2022 Jay Berkenbilt
+//
+// This file is part of qpdf.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+// Versions of qpdf prior to version 7 were released under the terms
+// of version 2.0 of the Artistic License. At your option, you may
+// continue to consider qpdf to be licensed under those terms. Please
+// see the manual for additional information.
+
+#ifndef QPDFVALUE_HH
+#define QPDFVALUE_HH
+
+#include <qpdf/Constants.h>
+#include <qpdf/DLL.h>
+#include <qpdf/JSON.hh>
+#include <qpdf/QPDFObjGen.hh>
+#include <qpdf/Types.h>
+
+#include <string>
+
+class QPDF;
+class QPDFObjectHandle;
+class QPDFObject;
+
+class QPDFValue
+{
+    friend class QPDFObject;
+
+  public:
+    virtual ~QPDFValue() = default;
+
+    virtual std::shared_ptr<QPDFObject> shallowCopy() = 0;
+    virtual std::string unparse() = 0;
+    virtual JSON getJSON(int json_version) = 0;
+    virtual void
+    setDescription(QPDF* qpdf, std::string const& description)
+    {
+        owning_qpdf = qpdf;
+        object_description = description;
+    }
+    bool
+    getDescription(QPDF*& qpdf, std::string& description)
+    {
+        qpdf = owning_qpdf;
+        description = object_description;
+        return owning_qpdf != nullptr;
+    }
+    bool
+    hasDescription()
+    {
+        return owning_qpdf != nullptr;
+    }
+    void
+    setParsedOffset(qpdf_offset_t offset)
+    {
+        if (parsed_offset < 0) {
+            parsed_offset = offset;
+        }
+    }
+    qpdf_offset_t
+    getParsedOffset()
+    {
+        return parsed_offset;
+    }
+    QPDF*
+    getQPDF()
+    {
+        return qpdf;
+    }
+    QPDFObjGen
+    getObjGen()
+    {
+        return og;
+    }
+
+  protected:
+    QPDFValue() :
+        type_code(::ot_uninitialized),
+        type_name("uninitialized")
+    {
+    }
+    QPDFValue(qpdf_object_type_e type_code, char const* type_name) :
+        type_code(type_code),
+        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()
+    {
+    }
+    static std::shared_ptr<QPDFObject> do_create(QPDFValue*);
+
+  private:
+    QPDFValue(QPDFValue const&) = delete;
+    QPDFValue& operator=(QPDFValue const&) = delete;
+    QPDF* owning_qpdf{nullptr};
+    std::string object_description;
+    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