summaryrefslogtreecommitdiff
path: root/core/fpdfapi/parser/cpdf_object.h
diff options
context:
space:
mode:
Diffstat (limited to 'core/fpdfapi/parser/cpdf_object.h')
-rw-r--r--core/fpdfapi/parser/cpdf_object.h183
1 files changed, 183 insertions, 0 deletions
diff --git a/core/fpdfapi/parser/cpdf_object.h b/core/fpdfapi/parser/cpdf_object.h
new file mode 100644
index 0000000000..75400f3a53
--- /dev/null
+++ b/core/fpdfapi/parser/cpdf_object.h
@@ -0,0 +1,183 @@
+// Copyright 2016 PDFium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
+
+#ifndef CORE_FPDFAPI_PARSER_CPDF_OBJECT_H_
+#define CORE_FPDFAPI_PARSER_CPDF_OBJECT_H_
+
+#include <memory>
+#include <set>
+
+#include "core/fxcrt/fx_string.h"
+#include "core/fxcrt/fx_system.h"
+
+class CPDF_Array;
+class CPDF_Boolean;
+class CPDF_Dictionary;
+class CPDF_Name;
+class CPDF_Null;
+class CPDF_Number;
+class CPDF_Reference;
+class CPDF_Stream;
+class CPDF_String;
+
+class CPDF_Object {
+ public:
+ static const uint32_t kInvalidObjNum = static_cast<uint32_t>(-1);
+ enum Type {
+ BOOLEAN = 1,
+ NUMBER,
+ STRING,
+ NAME,
+ ARRAY,
+ DICTIONARY,
+ STREAM,
+ NULLOBJ,
+ REFERENCE
+ };
+
+ virtual Type GetType() const = 0;
+ uint32_t GetObjNum() const { return m_ObjNum; }
+ uint32_t GetGenNum() const { return m_GenNum; }
+
+ // Create a deep copy of the object.
+ virtual CPDF_Object* Clone() const = 0;
+ // Create a deep copy of the object except any reference object be
+ // copied to the object it points to directly.
+ virtual CPDF_Object* CloneDirectObject() const;
+ virtual CPDF_Object* GetDirect() const;
+
+ void Release();
+
+ virtual CFX_ByteString GetString() const;
+ virtual CFX_WideString GetUnicodeText() const;
+ virtual FX_FLOAT GetNumber() const;
+ virtual int GetInteger() const;
+ virtual CPDF_Dictionary* GetDict() const;
+
+ virtual void SetString(const CFX_ByteString& str);
+
+ virtual bool IsArray() const;
+ virtual bool IsBoolean() const;
+ virtual bool IsDictionary() const;
+ virtual bool IsName() const;
+ virtual bool IsNumber() const;
+ virtual bool IsReference() const;
+ virtual bool IsStream() const;
+ virtual bool IsString() const;
+
+ virtual CPDF_Array* AsArray();
+ virtual const CPDF_Array* AsArray() const;
+ virtual CPDF_Boolean* AsBoolean();
+ virtual const CPDF_Boolean* AsBoolean() const;
+ virtual CPDF_Dictionary* AsDictionary();
+ virtual const CPDF_Dictionary* AsDictionary() const;
+ virtual CPDF_Name* AsName();
+ virtual const CPDF_Name* AsName() const;
+ virtual CPDF_Number* AsNumber();
+ virtual const CPDF_Number* AsNumber() const;
+ virtual CPDF_Reference* AsReference();
+ virtual const CPDF_Reference* AsReference() const;
+ virtual CPDF_Stream* AsStream();
+ virtual const CPDF_Stream* AsStream() const;
+ virtual CPDF_String* AsString();
+ virtual const CPDF_String* AsString() const;
+
+ protected:
+ friend class CPDF_Array;
+ friend class CPDF_Dictionary;
+ friend class CPDF_Document;
+ friend class CPDF_IndirectObjectHolder;
+ friend class CPDF_Parser;
+ friend class CPDF_Reference;
+ friend class CPDF_Stream;
+ friend struct std::default_delete<CPDF_Object>;
+
+ CPDF_Object() : m_ObjNum(0), m_GenNum(0) {}
+ virtual ~CPDF_Object();
+
+ CPDF_Object* CloneObjectNonCyclic(bool bDirect) const;
+
+ // Create a deep copy of the object with the option to either
+ // copy a reference object or directly copy the object it refers to
+ // when |bDirect| is true.
+ // Also check cyclic reference against |pVisited|, no copy if it is found.
+ // Complex objects should implement their own CloneNonCyclic()
+ // function to properly check for possible loop.
+ virtual CPDF_Object* CloneNonCyclic(
+ bool bDirect,
+ std::set<const CPDF_Object*>* pVisited) const;
+
+ uint32_t m_ObjNum;
+ uint32_t m_GenNum;
+
+ private:
+ CPDF_Object(const CPDF_Object& src) {}
+};
+
+inline CPDF_Boolean* ToBoolean(CPDF_Object* obj) {
+ return obj ? obj->AsBoolean() : nullptr;
+}
+
+inline const CPDF_Boolean* ToBoolean(const CPDF_Object* obj) {
+ return obj ? obj->AsBoolean() : nullptr;
+}
+
+inline CPDF_Number* ToNumber(CPDF_Object* obj) {
+ return obj ? obj->AsNumber() : nullptr;
+}
+
+inline const CPDF_Number* ToNumber(const CPDF_Object* obj) {
+ return obj ? obj->AsNumber() : nullptr;
+}
+
+inline CPDF_String* ToString(CPDF_Object* obj) {
+ return obj ? obj->AsString() : nullptr;
+}
+
+inline const CPDF_String* ToString(const CPDF_Object* obj) {
+ return obj ? obj->AsString() : nullptr;
+}
+
+inline CPDF_Name* ToName(CPDF_Object* obj) {
+ return obj ? obj->AsName() : nullptr;
+}
+
+inline const CPDF_Name* ToName(const CPDF_Object* obj) {
+ return obj ? obj->AsName() : nullptr;
+}
+
+inline CPDF_Array* ToArray(CPDF_Object* obj) {
+ return obj ? obj->AsArray() : nullptr;
+}
+
+inline const CPDF_Array* ToArray(const CPDF_Object* obj) {
+ return obj ? obj->AsArray() : nullptr;
+}
+
+inline CPDF_Dictionary* ToDictionary(CPDF_Object* obj) {
+ return obj ? obj->AsDictionary() : nullptr;
+}
+
+inline const CPDF_Dictionary* ToDictionary(const CPDF_Object* obj) {
+ return obj ? obj->AsDictionary() : nullptr;
+}
+inline CPDF_Reference* ToReference(CPDF_Object* obj) {
+ return obj ? obj->AsReference() : nullptr;
+}
+
+inline const CPDF_Reference* ToReference(const CPDF_Object* obj) {
+ return obj ? obj->AsReference() : nullptr;
+}
+
+inline CPDF_Stream* ToStream(CPDF_Object* obj) {
+ return obj ? obj->AsStream() : nullptr;
+}
+
+inline const CPDF_Stream* ToStream(const CPDF_Object* obj) {
+ return obj ? obj->AsStream() : nullptr;
+}
+
+#endif // CORE_FPDFAPI_PARSER_CPDF_OBJECT_H_