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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
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