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65 lines
2.3 KiB
C++
65 lines
2.3 KiB
C++
/*
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* (c) Copyright Ascensio System SIA 2010-2019
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*
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* This program is a free software product. You can redistribute it and/or
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* modify it under the terms of the GNU Affero General Public License (AGPL)
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* version 3 as published by the Free Software Foundation. In accordance with
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* Section 7(a) of the GNU AGPL its Section 15 shall be amended to the effect
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* that Ascensio System SIA expressly excludes the warranty of non-infringement
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* of any third-party rights.
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*
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* This program is distributed WITHOUT ANY WARRANTY; without even the implied
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* warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. For
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* details, see the GNU AGPL at: http://www.gnu.org/licenses/agpl-3.0.html
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*
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* You can contact Ascensio System SIA at 20A-12 Ernesta Birznieka-Upisha
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* street, Riga, Latvia, EU, LV-1050.
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*
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* The interactive user interfaces in modified source and object code versions
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* of the Program must display Appropriate Legal Notices, as required under
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* Section 5 of the GNU AGPL version 3.
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*
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* Pursuant to Section 7(b) of the License you must retain the original Product
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* logo when distributing the program. Pursuant to Section 7(e) we decline to
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* grant you any rights under trademark law for use of our trademarks.
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*
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* All the Product's GUI elements, including illustrations and icon sets, as
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* well as technical writing content are licensed under the terms of the
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* Creative Commons Attribution-ShareAlike 4.0 International. See the License
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* terms at http://creativecommons.org/licenses/by-sa/4.0/legalcode
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*
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*/
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#pragma once
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#include "VirtualStreamReader.h"
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namespace DocFileFormat
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{
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class ByteStructure
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{
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protected:
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ByteStructure() {}
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public:
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virtual ~ByteStructure() {}
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virtual ByteStructure* ConstructObject( VirtualStreamReader* reader, int length ) = 0; // Virtual constructor
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};
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class EmptyStructure: public ByteStructure
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{
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public:
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static const int STRUCTURE_SIZE = 0;
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EmptyStructure() {}
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virtual ~EmptyStructure() {}
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virtual ByteStructure* ConstructObject( VirtualStreamReader* reader, int length )
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{
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EmptyStructure *newObject = new EmptyStructure();
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return static_cast<ByteStructure*>( newObject );
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}
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};
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}
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