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// Copyright (c) 2005-2013 Jay Berkenbilt
//
// This file is part of qpdf. This software may be distributed under
// the terms of version 2 of the Artistic License which may be found
// in the source distribution. It is provided "as is" without express
// or implied warranty.
#ifndef __QPDFOBJECT_HH__
#define __QPDFOBJECT_HH__
#include <qpdf/DLL.h>
#include <string>
class QPDF;
class QPDFObjectHandle;
class QPDFObject
{
public:
// Objects derived from QPDFObject are accessible through
// QPDFObjectHandle. Each object returns a unique type code that
// has one of the values in the list below. As new object types
// are added to qpdf, additional items may be added to the list,
// so code that switches on these values should take that into
// consideration.
enum object_type_e {
// Object types internal to qpdf
ot_uninitialized,
ot_reserved,
// Object types that can occur in the main document
ot_null,
ot_boolean,
ot_integer,
ot_real,
ot_string,
ot_name,
ot_array,
ot_dictionary,
ot_stream,
// Additional object types that can occur in content streams
ot_operator,
ot_inlineimage,
};
virtual ~QPDFObject() {}
virtual std::string unparse() = 0;
// Return a unique type code for the object
virtual object_type_e getTypeCode() const = 0;
// Return a string literal that describes the type, useful for
// debugging and testing
virtual char const* getTypeName() const = 0;
// Accessor to give specific access to non-public methods
class ObjAccessor
{
friend class QPDF;
friend class QPDFObjectHandle;
private:
static void releaseResolved(QPDFObject* o)
{
if (o)
{
o->releaseResolved();
}
}
};
friend class ObjAccessor;
protected:
virtual void releaseResolved() {}
};
#endif // __QPDFOBJECT_HH__
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