CPDF_VariableText::GetIterator() never returns NULL.

fpdfsdk/fxedit/include/fxet_edit.h

 // Copyright 2014 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 FPDFSDK_FXEDIT_INCLUDE_FXET_EDIT_H_
 #define FPDFSDK_FXEDIT_INCLUDE_FXET_EDIT_H_
 
+#include <memory>
+
 #include "core/fpdfdoc/include/cpvt_secprops.h"
 #include "core/fpdfdoc/include/cpvt_wordprops.h"
 #include "fpdfsdk/fxedit/include/fx_edit.h"
 
 class CFX_Edit;
 class CFX_Edit_Iterator;
 class CFX_Edit_Provider;
 
 #define FX_EDIT_IsFloatZero(f) (f < 0.0001 && f > -0.0001)
 #define FX_EDIT_IsFloatEqual(fa, fb) FX_EDIT_IsFloatZero(fa - fb)
@@ skipping 700 matching lines @@
   void SetPageInfo(const CPVT_WordPlace& place);
   CPVT_WordPlace SearchPageEndPlace(const CPVT_WordPlace& wpPageBegin,
                                     const CFX_FloatPoint& point) const;
   FX_FLOAT GetLineTop(const CPVT_WordPlace& place) const;
   FX_FLOAT GetLineBottom(const CPVT_WordPlace& place) const;
 
  private:
   CPDF_VariableText* m_pVT;
   IFX_Edit_Notify* m_pNotify;
   IFX_Edit_OprNotify* m_pOprNotify;
-  CFX_Edit_Provider* m_pVTProvide;
+  std::unique_ptr<CFX_Edit_Provider> m_pVTProvider;
 
   CPVT_WordPlace m_wpCaret;
   CPVT_WordPlace m_wpOldCaret;
   CFX_Edit_Select m_SelState;
 
   CFX_FloatPoint m_ptScrollPos;
   CFX_FloatPoint m_ptRefreshScrollPos;
   FX_BOOL m_bEnableScroll;
-  IFX_Edit_Iterator* m_pIterator;
+  std::unique_ptr<IFX_Edit_Iterator> m_pIterator;
   CFX_Edit_Refresh m_Refresh;
   CFX_FloatPoint m_ptCaret;
   CFX_Edit_Undo m_Undo;
   int32_t m_nAlignment;
   FX_BOOL m_bNotifyFlag;
   FX_BOOL m_bEnableOverflow;
   FX_BOOL m_bEnableRefresh;
   CFX_FloatRect m_rcOldContent;
   FX_BOOL m_bEnableUndo;
   FX_BOOL m_bNotify;
@@ skipping 43 matching lines @@
                            int32_t charset,
                            int32_t nFontIndex) override;
   int32_t GetDefaultFontIndex() override;
   FX_BOOL IsLatinWord(uint16_t word) override;
 
  private:
   IPVT_FontMap* m_pFontMap;
 };
 
 #endif  // FPDFSDK_FXEDIT_INCLUDE_FXET_EDIT_H_