1 // Copyright 2016 The PDFium Authors 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 5 // Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com 6 7 #ifndef CORE_FPDFAPI_PARSER_CPDF_NULL_H_ 8 #define CORE_FPDFAPI_PARSER_CPDF_NULL_H_ 9 10 #include "core/fpdfapi/parser/cpdf_object.h" 11 #include "core/fxcrt/retain_ptr.h" 12 13 class CPDF_Null final : public CPDF_Object { 14 public: 15 CONSTRUCT_VIA_MAKE_RETAIN; 16 17 // CPDF_Object. 18 Type GetType() const override; 19 RetainPtr<CPDF_Object> Clone() const override; 20 CPDF_Null* AsMutableNull() override; 21 bool WriteTo(IFX_ArchiveStream* archive, 22 const CPDF_Encryptor* encryptor) const override; 23 24 private: 25 CPDF_Null(); 26 }; 27 28 #endif // CORE_FPDFAPI_PARSER_CPDF_NULL_H_ 29