Merge to XFA: Get rid of most instance of 'foo != NULL'

TBR=tsepez@chromium.org

Review URL: https://codereview.chromium.org/1512763013 .

(cherry picked from commit e3c7c2b54348da4a6939f6672f6c6bff126815a7)

Review URL: https://codereview.chromium.org/1529553003 .

9 files changed, 77 insertions, 94 deletions

diff --git a/core/src/fpdfdoc/doc_action.cpp b/core/src/fpdfdoc/doc_action.cpp
index 3ad746067d..87cfe7e642 100644
--- a/core/src/fpdfdoc/doc_action.cpp
+++ b/core/src/fpdfdoc/doc_action.cpp
@@ -34,7 +34,7 @@ const FX_CHAR* g_sATypes[] = {
     "SetOCGState", "Rendition",  "Trans",     "GoTo3DView", ""};
 CPDF_Action::ActionType CPDF_Action::GetType() const {
   ActionType eType = Unknown;
-  if (m_pDict != NULL) {
+  if (m_pDict) {
     CFX_ByteString csType = m_pDict->GetString("S");
     if (!csType.IsEmpty()) {
       int i = 0;
@@ -80,7 +80,7 @@ CFX_ByteString CPDF_Action::GetURI(CPDF_Document* pDoc) const {
   csURI = m_pDict->GetString("URI");
   CPDF_Dictionary* pRoot = pDoc->GetRoot();
   CPDF_Dictionary* pURI = pRoot->GetDict("URI");
-  if (pURI != NULL) {
+  if (pURI) {
     if (csURI.Find(":", 0) < 1) {
       csURI = pURI->GetString("Base") + csURI;
     }
@@ -179,10 +179,7 @@ CFX_WideString CPDF_Action::GetJavaScript() const {
     return csJS;
   }
   CPDF_Object* pJS = m_pDict->GetElementValue("JS");
-  if (pJS != NULL) {
-    return pJS->GetUnicodeText();
-  }
-  return csJS;
+  return pJS ? pJS->GetUnicodeText() : csJS;
 }
 CPDF_Dictionary* CPDF_Action::GetAnnot() const {
   if (!m_pDict) {
@@ -298,13 +295,13 @@ CPDF_Action CPDF_AAction::GetNextAction(FX_POSITION& pos,
 CPDF_DocJSActions::CPDF_DocJSActions(CPDF_Document* pDoc) : m_pDocument(pDoc) {}
 
 int CPDF_DocJSActions::CountJSActions() const {
-  ASSERT(m_pDocument != NULL);
+  ASSERT(m_pDocument);
   CPDF_NameTree name_tree(m_pDocument, "JavaScript");
   return name_tree.GetCount();
 }
 CPDF_Action CPDF_DocJSActions::GetJSAction(int index,
                                            CFX_ByteString& csName) const {
-  ASSERT(m_pDocument != NULL);
+  ASSERT(m_pDocument);
   CPDF_NameTree name_tree(m_pDocument, "JavaScript");
   CPDF_Object* pAction = name_tree.LookupValue(index, csName);
   if (!ToDictionary(pAction)) {
@@ -313,7 +310,7 @@ CPDF_Action CPDF_DocJSActions::GetJSAction(int index,
   return CPDF_Action(pAction->GetDict());
 }
 CPDF_Action CPDF_DocJSActions::GetJSAction(const CFX_ByteString& csName) const {
-  ASSERT(m_pDocument != NULL);
+  ASSERT(m_pDocument);
   CPDF_NameTree name_tree(m_pDocument, "JavaScript");
   CPDF_Object* pAction = name_tree.LookupValue(csName);
   if (!ToDictionary(pAction)) {
@@ -322,7 +319,7 @@ CPDF_Action CPDF_DocJSActions::GetJSAction(const CFX_ByteString& csName) const {
   return CPDF_Action(pAction->GetDict());
 }
 int CPDF_DocJSActions::FindJSAction(const CFX_ByteString& csName) const {
-  ASSERT(m_pDocument != NULL);
+  ASSERT(m_pDocument);
   CPDF_NameTree name_tree(m_pDocument, "JavaScript");
   return name_tree.GetIndex(csName);
 }
diff --git a/core/src/fpdfdoc/doc_annot.cpp b/core/src/fpdfdoc/doc_annot.cpp
index cacd650dde..0871b357cf 100644
--- a/core/src/fpdfdoc/doc_annot.cpp
+++ b/core/src/fpdfdoc/doc_annot.cpp
@@ -304,7 +304,7 @@ void CPDF_Annot::DrawBorder(CFX_RenderDevice* pDevice,
   }
   CPDF_Array* pColor = m_pAnnotDict->GetArray("C");
   FX_DWORD argb = 0xff000000;
-  if (pColor != NULL) {
+  if (pColor) {
     int R = (int32_t)(pColor->GetNumber(0) * 255);
     int G = (int32_t)(pColor->GetNumber(1) * 255);
     int B = (int32_t)(pColor->GetNumber(2) * 255);
diff --git a/core/src/fpdfdoc/doc_ap.cpp b/core/src/fpdfdoc/doc_ap.cpp
index effe587090..1392ae6e2e 100644
--- a/core/src/fpdfdoc/doc_ap.cpp
+++ b/core/src/fpdfdoc/doc_ap.cpp
@@ -123,7 +123,7 @@ CFX_ByteString CPVT_FontMap::GetPDFFontAlias(int32_t nFontIndex) {
   return "";
 }
 CPVT_Provider::CPVT_Provider(IPVT_FontMap* pFontMap) : m_pFontMap(pFontMap) {
-  ASSERT(m_pFontMap != NULL);
+  ASSERT(m_pFontMap);
 }
 CPVT_Provider::~CPVT_Provider() {}
 int32_t CPVT_Provider::GetCharWidth(int32_t nFontIndex,
diff --git a/core/src/fpdfdoc/doc_basic.cpp b/core/src/fpdfdoc/doc_basic.cpp
index 904ccf7c1f..c58e10b779 100644
--- a/core/src/fpdfdoc/doc_basic.cpp
+++ b/core/src/fpdfdoc/doc_basic.cpp
@@ -77,7 +77,7 @@ static CPDF_Object* SearchNameNode(CPDF_Dictionary* pNode,
     return NULL;
   }
   CPDF_Array* pLimits = pNode->GetArray("Limits");
-  if (pLimits != NULL) {
+  if (pLimits) {
     CFX_ByteString csLeft = pLimits->GetString(0);
     CFX_ByteString csRight = pLimits->GetString(1);
     if (csLeft.Compare(csRight) > 0) {
@@ -96,7 +96,7 @@ static CPDF_Object* SearchNameNode(CPDF_Dictionary* pNode,
       CFX_ByteString csValue = pNames->GetString(i * 2);
       int32_t iCompare = csValue.Compare(csName);
       if (iCompare <= 0) {
-        if (ppFind != NULL) {
+        if (ppFind) {
           *ppFind = pNames;
         }
         if (iCompare < 0) {
@@ -144,7 +144,7 @@ static CPDF_Object* SearchNameNode(CPDF_Dictionary* pNode,
       nCurIndex += nCount;
       return NULL;
     }
-    if (ppFind != NULL) {
+    if (ppFind) {
       *ppFind = pNames;
     }
     csName = pNames->GetString((nIndex - nCurIndex) * 2);
@@ -389,7 +389,6 @@ CPDF_Stream* CPDF_FileSpec::GetFileStream() const {
 static void FPDFDOC_FILESPEC_SetFileName(CPDF_Object* pObj,
                                          const CFX_WideStringC& wsFileName,
                                          FX_BOOL bURL) {
-  ASSERT(pObj != NULL);
   CFX_WideString wsStr;
   if (bURL) {
     wsStr = wsFileName;
@@ -405,7 +404,6 @@ static void FPDFDOC_FILESPEC_SetFileName(CPDF_Object* pObj,
 }
 void CPDF_FileSpec::SetFileName(const CFX_WideStringC& wsFileName,
                                 FX_BOOL bURL) {
-  ASSERT(m_pObj != NULL);
   if (bURL) {
     if (CPDF_Dictionary* pDict = m_pObj->AsDictionary()) {
       pDict->SetAtName("FS", "URL");
@@ -483,12 +481,12 @@ CFX_WideString CPDF_PageLabel::GetLabel(int nPage) const {
   int n = nPage;
   while (n >= 0) {
     pValue = numberTree.LookupValue(n);
-    if (pValue != NULL) {
+    if (pValue) {
       break;
     }
     n--;
   }
-  if (pValue != NULL) {
+  if (pValue) {
     pValue = pValue->GetDirect();
     if (CPDF_Dictionary* pLabel = pValue->AsDictionary()) {
       if (pLabel->KeyExist("P")) {
diff --git a/core/src/fpdfdoc/doc_form.cpp b/core/src/fpdfdoc/doc_form.cpp
index 0201b5c85a..0617609fc2 100644
--- a/core/src/fpdfdoc/doc_form.cpp
+++ b/core/src/fpdfdoc/doc_form.cpp
@@ -328,7 +328,7 @@ static int CALLBACK EnumFontFamExProc(ENUMLOGFONTEXA* lpelfe,
                                       NEWTEXTMETRICEX* lpntme,
                                       DWORD FontType,
                                       LPARAM lParam) {
-  if (FontType != 0x004 || strchr(lpelfe->elfLogFont.lfFaceName, '@') != NULL) {
+  if (FontType != 0x004 || strchr(lpelfe->elfLogFont.lfFaceName, '@')) {
     return 1;
   }
   LPDF_FONTDATA pData = (LPDF_FONTDATA)lParam;
@@ -355,7 +355,7 @@ static FX_BOOL RetrieveSpecificFont(uint8_t charSet,
   memset(&lf, 0, sizeof(LOGFONTA));
   lf.lfCharSet = charSet;
   lf.lfPitchAndFamily = pitchAndFamily;
-  if (pcsFontName != NULL) {
+  if (pcsFontName) {
     strcpy(lf.lfFaceName, pcsFontName);
   }
   return RetrieveSpecificFont(lf);
@@ -421,7 +421,7 @@ CFX_ByteString CPDF_InterForm::GetNativeFont(uint8_t charSet, void* pLogFont) {
     bRet = RetrieveSpecificFont(charSet, DEFAULT_PITCH | FF_DONTCARE, NULL, lf);
   }
   if (bRet) {
-    if (pLogFont != NULL) {
+    if (pLogFont) {
       memcpy(pLogFont, &lf, sizeof(LOGFONTA));
     }
     csFontName = lf.lfFaceName;
@@ -555,7 +555,7 @@ FX_BOOL CPDF_InterForm::ValidateFieldName(
         continue;
       }
       if (pField == pExcludedField) {
-        if (pExcludedControl != NULL) {
+        if (pExcludedControl) {
           if (pField->CountControls() < 2) {
             continue;
           }
@@ -919,10 +919,9 @@ void CPDF_InterForm::LoadField(CPDF_Dictionary* pFieldDict, int nLevel) {
   }
 }
 FX_BOOL CPDF_InterForm::HasXFAForm() const {
-  return m_pFormDict && m_pFormDict->GetArray("XFA") != NULL;
+  return m_pFormDict && m_pFormDict->GetArray("XFA");
 }
 void CPDF_InterForm::FixPageFields(const CPDF_Page* pPage) {
-  ASSERT(pPage != NULL);
   CPDF_Dictionary* pPageDict = pPage->m_pFormDict;
   if (pPageDict == NULL) {
     return;
@@ -934,7 +933,7 @@ void CPDF_InterForm::FixPageFields(const CPDF_Page* pPage) {
   int iAnnotCount = pAnnots->GetCount();
   for (int i = 0; i < iAnnotCount; i++) {
     CPDF_Dictionary* pAnnot = pAnnots->GetDict(i);
-    if (pAnnot != NULL && pAnnot->GetString("Subtype") == "Widget") {
+    if (pAnnot && pAnnot->GetString("Subtype") == "Widget") {
       LoadField(pAnnot);
     }
   }
@@ -1142,7 +1141,6 @@ const struct _SupportFieldEncoding {
 static void FPDFDOC_FDF_GetFieldValue(CPDF_Dictionary* pFieldDict,
                                       CFX_WideString& csValue,
                                       CFX_ByteString& bsEncoding) {
-  ASSERT(pFieldDict != NULL);
   CFX_ByteString csBValue = pFieldDict->GetString("V");
   int32_t iCount = sizeof(g_fieldEncoding) / sizeof(g_fieldEncoding[0]);
   int32_t i = 0;
@@ -1153,7 +1151,7 @@ static void FPDFDOC_FDF_GetFieldValue(CPDF_Dictionary* pFieldDict,
   if (i < iCount) {
     CFX_CharMap* pCharMap =
         CFX_CharMap::GetDefaultMapper(g_fieldEncoding[i].m_codePage);
-    FXSYS_assert(pCharMap != NULL);
+    FXSYS_assert(pCharMap);
     csValue.ConvertFrom(csBValue, pCharMap);
     return;
   }
@@ -1196,7 +1194,7 @@ void CPDF_InterForm::FDF_ImportField(CPDF_Dictionary* pFieldDict,
   CFX_WideString csWValue;
   FPDFDOC_FDF_GetFieldValue(pFieldDict, csWValue, m_bsEncoding);
   int iType = pField->GetFieldType();
-  if (bNotify && m_pFormNotify != NULL) {
+  if (bNotify && m_pFormNotify) {
     int iRet = 0;
     if (iType == FIELDTYPE_LISTBOX) {
       iRet = m_pFormNotify->BeforeSelectionChange(pField, csWValue);
@@ -1218,7 +1216,7 @@ void CPDF_InterForm::FDF_ImportField(CPDF_Dictionary* pFieldDict,
     pField->m_pDict->SetAt("Opt",
                            pFieldDict->GetElementValue("Opt")->Clone(TRUE));
   }
-  if (bNotify && m_pFormNotify != NULL) {
+  if (bNotify && m_pFormNotify) {
     if (iType == FIELDTYPE_CHECKBOX || iType == FIELDTYPE_RADIOBUTTON) {
       m_pFormNotify->AfterCheckedStatusChange(pField, statusArray);
     } else if (iType == FIELDTYPE_LISTBOX) {
@@ -1245,7 +1243,7 @@ FX_BOOL CPDF_InterForm::ImportFromFDF(const CFDF_Document* pFDF,
     return FALSE;
   }
   m_bsEncoding = pMainDict->GetString("Encoding");
-  if (bNotify && m_pFormNotify != NULL) {
+  if (bNotify && m_pFormNotify) {
     int iRet = m_pFormNotify->BeforeFormImportData(this);
     if (iRet < 0) {
       return FALSE;
@@ -1258,7 +1256,7 @@ FX_BOOL CPDF_InterForm::ImportFromFDF(const CFDF_Document* pFDF,
     }
     FDF_ImportField(pField, L"", bNotify);
   }
-  if (bNotify && m_pFormNotify != NULL) {
+  if (bNotify && m_pFormNotify) {
     m_pFormNotify->AfterFormImportData(this);
   }
   return TRUE;
diff --git a/core/src/fpdfdoc/doc_formfield.cpp b/core/src/fpdfdoc/doc_formfield.cpp
index ca2fe05476..e14b5ad31a 100644
--- a/core/src/fpdfdoc/doc_formfield.cpp
+++ b/core/src/fpdfdoc/doc_formfield.cpp
@@ -103,7 +103,7 @@ FX_BOOL CPDF_FormField::ResetField(FX_BOOL bNotify) {
     case CPDF_FormField::CheckBox:
     case CPDF_FormField::RadioButton: {
       CFX_ByteArray statusArray;
-      if (bNotify && m_pForm->m_pFormNotify != NULL) {
+      if (bNotify && m_pForm->m_pFormNotify) {
         SaveCheckedFieldStatus(this, statusArray);
       }
       int iCount = CountControls();
@@ -120,7 +120,7 @@ FX_BOOL CPDF_FormField::ResetField(FX_BOOL bNotify) {
           }
         }
       }
-      if (bNotify && m_pForm->m_pFormNotify != NULL) {
+      if (bNotify && m_pForm->m_pFormNotify) {
         m_pForm->m_pFormNotify->AfterCheckedStatusChange(this, statusArray);
       }
     } break;
@@ -131,14 +131,14 @@ FX_BOOL CPDF_FormField::ResetField(FX_BOOL bNotify) {
       if (iIndex >= 0) {
         csValue = GetOptionLabel(iIndex);
       }
-      if (bNotify && m_pForm->m_pFormNotify != NULL) {
+      if (bNotify && m_pForm->m_pFormNotify) {
         int iRet = m_pForm->m_pFormNotify->BeforeValueChange(this, csValue);
         if (iRet < 0) {
           return FALSE;
         }
       }
       SetItemSelection(iIndex, TRUE);
-      if (bNotify && m_pForm->m_pFormNotify != NULL) {
+      if (bNotify && m_pForm->m_pFormNotify) {
         m_pForm->m_pFormNotify->AfterValueChange(this);
       }
     } break;
@@ -149,14 +149,14 @@ FX_BOOL CPDF_FormField::ResetField(FX_BOOL bNotify) {
       if (iIndex >= 0) {
         csValue = GetOptionLabel(iIndex);
       }
-      if (bNotify && m_pForm->m_pFormNotify != NULL) {
+      if (bNotify && m_pForm->m_pFormNotify) {
         int iRet = m_pForm->m_pFormNotify->BeforeSelectionChange(this, csValue);
         if (iRet < 0) {
           return FALSE;
         }
       }
       SetItemSelection(iIndex, TRUE);
-      if (bNotify && m_pForm->m_pFormNotify != NULL) {
+      if (bNotify && m_pForm->m_pFormNotify) {
         m_pForm->m_pFormNotify->AfterSelectionChange(this);
       }
     } break;
@@ -166,19 +166,19 @@ FX_BOOL CPDF_FormField::ResetField(FX_BOOL bNotify) {
     default: {
       CPDF_Object* pDV = FPDF_GetFieldAttr(m_pDict, "DV");
       CFX_WideString csDValue;
-      if (pDV != NULL) {
+      if (pDV) {
         csDValue = pDV->GetUnicodeText();
       }
       CPDF_Object* pV = FPDF_GetFieldAttr(m_pDict, "V");
       CFX_WideString csValue;
-      if (pV != NULL) {
+      if (pV) {
         csValue = pV->GetUnicodeText();
       }
       CPDF_Object* pRV = FPDF_GetFieldAttr(m_pDict, "RV");
       if (!pRV && (csDValue == csValue)) {
         return FALSE;
       }
-      if (bNotify && m_pForm->m_pFormNotify != NULL) {
+      if (bNotify && m_pForm->m_pFormNotify) {
         int iRet = m_pForm->m_pFormNotify->BeforeValueChange(this, csDValue);
         if (iRet < 0) {
           return FALSE;
@@ -198,7 +198,7 @@ FX_BOOL CPDF_FormField::ResetField(FX_BOOL bNotify) {
           m_pDict->SetAt("RV", pCloneR);
         }
       }
-      if (bNotify && m_pForm->m_pFormNotify != NULL) {
+      if (bNotify && m_pForm->m_pFormNotify) {
         m_pForm->m_pFormNotify->AfterValueChange(this);
       }
       m_pForm->m_bUpdated = TRUE;
@@ -331,7 +331,7 @@ FX_BOOL CPDF_FormField::SetValue(const CFX_WideString& value,
     case Text:
     case ComboBox: {
       CFX_WideString csValue = value;
-      if (bNotify && m_pForm->m_pFormNotify != NULL) {
+      if (bNotify && m_pForm->m_pFormNotify) {
         int iRet = m_pForm->m_pFormNotify->BeforeValueChange(this, csValue);
         if (iRet < 0) {
           return FALSE;
@@ -353,7 +353,7 @@ FX_BOOL CPDF_FormField::SetValue(const CFX_WideString& value,
           SetItemSelection(iIndex, TRUE);
         }
       }
-      if (bNotify && m_pForm->m_pFormNotify != NULL) {
+      if (bNotify && m_pForm->m_pFormNotify) {
         m_pForm->m_pFormNotify->AfterValueChange(this);
       }
       m_pForm->m_bUpdated = TRUE;
@@ -366,7 +366,7 @@ FX_BOOL CPDF_FormField::SetValue(const CFX_WideString& value,
       if (bDefault && iIndex == GetDefaultSelectedItem()) {
         return FALSE;
       }
-      if (bNotify && m_pForm->m_pFormNotify != NULL) {
+      if (bNotify && m_pForm->m_pFormNotify) {
         CFX_WideString csValue = value;
         int iRet = m_pForm->m_pFormNotify->BeforeSelectionChange(this, csValue);
         if (iRet < 0) {
@@ -378,7 +378,7 @@ FX_BOOL CPDF_FormField::SetValue(const CFX_WideString& value,
         ClearSelection();
         SetItemSelection(iIndex, TRUE);
       }
-      if (bNotify && m_pForm->m_pFormNotify != NULL) {
+      if (bNotify && m_pForm->m_pFormNotify) {
         m_pForm->m_pFormNotify->AfterSelectionChange(this);
       }
       m_pForm->m_bUpdated = TRUE;
@@ -464,7 +464,7 @@ int CPDF_FormField::GetSelectedIndex(int index) {
   return -1;
 }
 FX_BOOL CPDF_FormField::ClearSelection(FX_BOOL bNotify) {
-  if (bNotify && m_pForm->m_pFormNotify != NULL) {
+  if (bNotify && m_pForm->m_pFormNotify) {
     int iRet = 0;
     CFX_WideString csValue;
     int iIndex = GetSelectedIndex(0);
@@ -483,7 +483,7 @@ FX_BOOL CPDF_FormField::ClearSelection(FX_BOOL bNotify) {
   }
   m_pDict->RemoveAt("V");
   m_pDict->RemoveAt("I");
-  if (bNotify && m_pForm->m_pFormNotify != NULL) {
+  if (bNotify && m_pForm->m_pFormNotify) {
     if (GetType() == ListBox) {
       m_pForm->m_pFormNotify->AfterSelectionChange(this);
     }
@@ -549,7 +549,7 @@ FX_BOOL CPDF_FormField::SetItemSelection(int index,
     return FALSE;
   }
   CFX_WideString opt_value = GetOptionValue(index);
-  if (bNotify && m_pForm->m_pFormNotify != NULL) {
+  if (bNotify && m_pForm->m_pFormNotify) {
     int iRet = 0;
     if (GetType() == ListBox) {
       iRet = m_pForm->m_pFormNotify->BeforeSelectionChange(this, opt_value);
@@ -563,7 +563,7 @@ FX_BOOL CPDF_FormField::SetItemSelection(int index,
   }
   if (!bSelected) {
     CPDF_Object* pValue = FPDF_GetFieldAttr(m_pDict, "V");
-    if (pValue != NULL) {
+    if (pValue) {
       if (m_Type == ListBox) {
         SelectOption(index, FALSE);
         if (pValue->IsString()) {
@@ -627,7 +627,7 @@ FX_BOOL CPDF_FormField::SetItemSelection(int index,
       m_pDict->SetAt("I", pI);
     }
   }
-  if (bNotify && m_pForm->m_pFormNotify != NULL) {
+  if (bNotify && m_pForm->m_pFormNotify) {
     if (GetType() == ListBox) {
       m_pForm->m_pFormNotify->AfterSelectionChange(this);
     }
@@ -824,7 +824,7 @@ FX_BOOL CPDF_FormField::CheckControl(int iControlIndex,
     return FALSE;
   }
   CFX_ByteArray statusArray;
-  if (bNotify && m_pForm->m_pFormNotify != NULL) {
+  if (bNotify && m_pForm->m_pFormNotify) {
     SaveCheckedFieldStatus(this, statusArray);
   }
   CFX_WideString csWExport = pControl->GetExportValue();
@@ -859,7 +859,7 @@ FX_BOOL CPDF_FormField::CheckControl(int iControlIndex,
     } else {
       CFX_ByteString csV;
       CPDF_Object* pV = FPDF_GetFieldAttr(m_pDict, "V");
-      if (pV != NULL) {
+      if (pV) {
         csV = pV->GetString();
       }
       if (csV == csBExport) {
@@ -871,7 +871,7 @@ FX_BOOL CPDF_FormField::CheckControl(int iControlIndex,
     csIndex.Format("%d", iControlIndex);
     m_pDict->SetAtName("V", csIndex);
   }
-  if (bNotify && m_pForm->m_pFormNotify != NULL) {
+  if (bNotify && m_pForm->m_pFormNotify) {
     m_pForm->m_pFormNotify->AfterCheckedStatusChange(this, statusArray);
   }
   m_pForm->m_bUpdated = TRUE;
@@ -901,7 +901,7 @@ FX_BOOL CPDF_FormField::SetCheckValue(const CFX_WideString& value,
                                       FX_BOOL bNotify) {
   ASSERT(GetType() == CheckBox || GetType() == RadioButton);
   CFX_ByteArray statusArray;
-  if (bNotify && m_pForm->m_pFormNotify != NULL) {
+  if (bNotify && m_pForm->m_pFormNotify) {
     SaveCheckedFieldStatus(this, statusArray);
   }
   int iCount = CountControls();
@@ -921,7 +921,7 @@ FX_BOOL CPDF_FormField::SetCheckValue(const CFX_WideString& value,
       }
     }
   }
-  if (bNotify && m_pForm->m_pFormNotify != NULL) {
+  if (bNotify && m_pForm->m_pFormNotify) {
     m_pForm->m_pFormNotify->AfterCheckedStatusChange(this, statusArray);
   }
   m_pForm->m_bUpdated = TRUE;
@@ -998,7 +998,7 @@ FX_BOOL CPDF_FormField::SelectOption(int iOptIndex,
       if (bSelected) {
         return TRUE;
       }
-      if (bNotify && m_pForm->m_pFormNotify != NULL) {
+      if (bNotify && m_pForm->m_pFormNotify) {
         int iRet = 0;
         CFX_WideString csValue = GetOptionLabel(iOptIndex);
         if (GetType() == ListBox) {
@@ -1018,7 +1018,7 @@ FX_BOOL CPDF_FormField::SelectOption(int iOptIndex,
       if (!bSelected) {
         continue;
       }
-      if (bNotify && m_pForm->m_pFormNotify != NULL) {
+      if (bNotify && m_pForm->m_pFormNotify) {
         int iRet = 0;
         CFX_WideString csValue = GetOptionLabel(iOptIndex);
         if (GetType() == ListBox) {
@@ -1048,7 +1048,7 @@ FX_BOOL CPDF_FormField::SelectOption(int iOptIndex,
       m_pDict->RemoveAt("I");
     }
   }
-  if (bNotify && m_pForm->m_pFormNotify != NULL) {
+  if (bNotify && m_pForm->m_pFormNotify) {
     if (GetType() == ListBox) {
       m_pForm->m_pFormNotify->AfterSelectionChange(this);
     }
@@ -1060,7 +1060,7 @@ FX_BOOL CPDF_FormField::SelectOption(int iOptIndex,
   return TRUE;
 }
 FX_BOOL CPDF_FormField::ClearSelectedOptions(FX_BOOL bNotify) {
-  if (bNotify && m_pForm->m_pFormNotify != NULL) {
+  if (bNotify && m_pForm->m_pFormNotify) {
     int iRet = 0;
     CFX_WideString csValue;
     int iIndex = GetSelectedIndex(0);
@@ -1078,7 +1078,7 @@ FX_BOOL CPDF_FormField::ClearSelectedOptions(FX_BOOL bNotify) {
     }
   }
   m_pDict->RemoveAt("I");
-  if (bNotify && m_pForm->m_pFormNotify != NULL) {
+  if (bNotify && m_pForm->m_pFormNotify) {
     if (GetType() == ListBox) {
       m_pForm->m_pFormNotify->AfterSelectionChange(this);
     }
diff --git a/core/src/fpdfdoc/doc_ocg.cpp b/core/src/fpdfdoc/doc_ocg.cpp
index 4e0e1c5a31..cfca121d36 100644
--- a/core/src/fpdfdoc/doc_ocg.cpp
+++ b/core/src/fpdfdoc/doc_ocg.cpp
@@ -24,7 +24,6 @@ static int32_t FPDFDOC_OCG_FindGroup(const CPDF_Object* pObject,
 static FX_BOOL FPDFDOC_OCG_HasIntent(const CPDF_Dictionary* pDict,
                                      const CFX_ByteStringC& csElement,
                                      const CFX_ByteStringC& csDef = "") {
-  FXSYS_assert(pDict != NULL);
   CPDF_Object* pIntent = pDict->GetElementValue("Intent");
   if (pIntent == NULL) {
     return csElement == csDef;
@@ -89,7 +88,7 @@ static CFX_ByteString FPDFDOC_OCG_GetUsageTypeString(
   return csState;
 }
 CPDF_OCContext::CPDF_OCContext(CPDF_Document* pDoc, UsageType eUsageType) {
-  FXSYS_assert(pDoc != NULL);
+  FXSYS_assert(pDoc);
   m_pDocument = pDoc;
   m_eUsageType = eUsageType;
 }
@@ -235,9 +234,8 @@ FX_BOOL CPDF_OCContext::GetOCGVE(CPDF_Array* pExpression,
 }
 FX_BOOL CPDF_OCContext::LoadOCMDState(const CPDF_Dictionary* pOCMDDict,
                                       FX_BOOL bFromConfig) {
-  FXSYS_assert(pOCMDDict != NULL);
   CPDF_Array* pVE = pOCMDDict->GetArray("VE");
-  if (pVE != NULL) {
+  if (pVE) {
     return GetOCGVE(pVE, bFromConfig);
   }
   CFX_ByteString csP = pOCMDDict->GetString("P", "AnyOn");
diff --git a/core/src/fpdfdoc/doc_utils.cpp b/core/src/fpdfdoc/doc_utils.cpp
index adf523f74e..f26355fae5 100644
--- a/core/src/fpdfdoc/doc_utils.cpp
+++ b/core/src/fpdfdoc/doc_utils.cpp
@@ -242,7 +242,7 @@ void InitInterFormDict(CPDF_Dictionary*& pFormDict, CPDF_Document* pDocument) {
     CFX_ByteString csBaseName, csDefault;
     uint8_t charSet = CPDF_InterForm::GetNativeCharSet();
     pFont = CPDF_InterForm::AddStandardFont(pDocument, "Helvetica");
-    if (pFont != NULL) {
+    if (pFont) {
       AddInterFormFont(pFormDict, pDocument, pFont, csBaseName);
       csDefault = csBaseName;
     }
@@ -250,14 +250,14 @@ void InitInterFormDict(CPDF_Dictionary*& pFormDict, CPDF_Document* pDocument) {
       CFX_ByteString csFontName = CPDF_InterForm::GetNativeFont(charSet, NULL);
       if (pFont == NULL || csFontName != "Helvetica") {
         pFont = CPDF_InterForm::AddNativeFont(pDocument);
-        if (pFont != NULL) {
+        if (pFont) {
           csBaseName = "";
           AddInterFormFont(pFormDict, pDocument, pFont, csBaseName);
           csDefault = csBaseName;
         }
       }
     }
-    if (pFont != NULL) {
+    if (pFont) {
       csDA = "/" + PDF_NameEncode(csDefault) + " 0 Tf";
     }
   }
@@ -452,9 +452,9 @@ CPDF_Font* GetNativeInterFormFont(CPDF_Dictionary* pFormDict,
   uint8_t charSet = CPDF_InterForm::GetNativeCharSet();
   CFX_SubstFont* pSubst;
   CPDF_Font* pFont = GetDefaultInterFormFont(pFormDict, pDocument);
-  if (pFont != NULL) {
+  if (pFont) {
     pSubst = (CFX_SubstFont*)pFont->GetSubstFont();
-    if (pSubst != NULL && pSubst->m_Charset == (int)charSet) {
+    if (pSubst && pSubst->m_Charset == (int)charSet) {
       FindInterFormFont(pFormDict, pFont, csNameTag);
       return pFont;
     }
@@ -592,7 +592,7 @@ CPDF_Font* AddNativeInterFormFont(CPDF_Dictionary*& pFormDict,
   CFX_ByteString csTemp;
   CPDF_Font* pFont =
       GetNativeInterFormFont(pFormDict, pDocument, charSet, csTemp);
-  if (pFont != NULL) {
+  if (pFont) {
     csNameTag = csTemp;
     return pFont;
   }
@@ -603,7 +603,7 @@ CPDF_Font* AddNativeInterFormFont(CPDF_Dictionary*& pFormDict,
     }
   }
   pFont = CPDF_InterForm::AddNativeFont(charSet, pDocument);
-  if (pFont != NULL) {
+  if (pFont) {
     AddInterFormFont(pFormDict, pDocument, pFont, csNameTag);
   }
   return pFont;
@@ -679,7 +679,7 @@ void CPDF_IconFit::GetIconPosition(FX_FLOAT& fLeft, FX_FLOAT& fBottom) {
     return;
   }
   CPDF_Array* pA = m_pDict->GetArray("A");
-  if (pA != NULL) {
+  if (pA) {
     FX_DWORD dwCount = pA->GetCount();
     if (dwCount > 0) {
       fLeft = pA->GetNumber(0);
diff --git a/core/src/fpdfdoc/doc_vt.cpp b/core/src/fpdfdoc/doc_vt.cpp
index 07824e8f04..8df687ed59 100644
--- a/core/src/fpdfdoc/doc_vt.cpp
+++ b/core/src/fpdfdoc/doc_vt.cpp
@@ -84,7 +84,6 @@ CPVT_WordPlace CSection::AddLine(const CPVT_LineInfo& lineinfo) {
   return CPVT_WordPlace(SecPlace.nSecIndex, m_LineArray.Add(lineinfo), -1);
 }
 CPVT_FloatRect CSection::Rearrange() {
-  ASSERT(m_pVT != NULL);
   if (m_pVT->m_nCharArray > 0) {
     return CTypeset(this).CharArray();
   }
@@ -166,7 +165,7 @@ void CSection::UpdateWordPlace(CPVT_WordPlace& place) const {
   }
 }
 CPVT_WordPlace CSection::SearchWordPlace(const CPDF_Point& point) const {
-  ASSERT(m_pVT != NULL);
+  ASSERT(m_pVT);
   CPVT_WordPlace place = GetBeginWordPlace();
   FX_BOOL bUp = TRUE;
   FX_BOOL bDown = TRUE;
@@ -306,8 +305,7 @@ CTypeset::CTypeset(CSection* pSection)
       m_pSection(pSection) {}
 CTypeset::~CTypeset() {}
 CPVT_FloatRect CTypeset::CharArray() {
-  ASSERT(m_pSection != NULL);
-  ASSERT(m_pVT != NULL);
+  ASSERT(m_pSection);
   FX_FLOAT fLineAscent =
       m_pVT->GetFontAscent(m_pVT->GetDefaultFontIndex(), m_pVT->GetFontSize());
   FX_FLOAT fLineDescent =
@@ -382,14 +380,13 @@ CPVT_FloatRect CTypeset::CharArray() {
   return m_rcRet = CPVT_FloatRect(0, 0, x, y);
 }
 CPVT_Size CTypeset::GetEditSize(FX_FLOAT fFontSize) {
-  ASSERT(m_pSection != NULL);
-  ASSERT(m_pVT != NULL);
+  ASSERT(m_pSection);
+  ASSERT(m_pVT);
   SplitLines(FALSE, fFontSize);
   return CPVT_Size(m_rcRet.Width(), m_rcRet.Height());
 }
 CPVT_FloatRect CTypeset::Typeset() {
-  ASSERT(m_pSection != NULL);
-  ASSERT(m_pVT != NULL);
+  ASSERT(m_pVT);
   m_pSection->m_LineArray.Empty();
   SplitLines(TRUE, 0.0f);
   m_pSection->m_LineArray.Clear();
@@ -571,8 +568,8 @@ static FX_BOOL NeedDivision(FX_WORD prevWord, FX_WORD curWord) {
   return FALSE;
 }
 void CTypeset::SplitLines(FX_BOOL bTypeset, FX_FLOAT fFontSize) {
-  ASSERT(m_pVT != NULL);
-  ASSERT(m_pSection != NULL);
+  ASSERT(m_pVT);
+  ASSERT(m_pSection);
   int32_t nLineHead = 0;
   int32_t nLineTail = 0;
   FX_FLOAT fMaxX = 0.0f, fMaxY = 0.0f;
@@ -619,7 +616,7 @@ void CTypeset::SplitLines(FX_BOOL bTypeset, FX_FLOAT fFontSize) {
           if (IsOpenStylePunctuation(pWord->Word)) {
             bOpened = TRUE;
             bFullWord = TRUE;
-          } else if (pOldWord != NULL) {
+          } else if (pOldWord) {
             if (NeedDivision(pOldWord->Word, pWord->Word)) {
               bFullWord = TRUE;
             }
@@ -718,8 +715,8 @@ void CTypeset::SplitLines(FX_BOOL bTypeset, FX_FLOAT fFontSize) {
   m_rcRet = CPVT_FloatRect(0, 0, fMaxX, fMaxY);
 }
 void CTypeset::OutputLines() {
-  ASSERT(m_pVT != NULL);
-  ASSERT(m_pSection != NULL);
+  ASSERT(m_pVT);
+  ASSERT(m_pSection);
   FX_FLOAT fMinX = 0.0f, fMinY = 0.0f, fMaxX = 0.0f, fMaxY = 0.0f;
   FX_FLOAT fPosX = 0.0f, fPosY = 0.0f;
   FX_FLOAT fLineIndent = m_pVT->GetLineIndent(m_pSection->m_SecInfo);
@@ -1677,11 +1674,10 @@ CPDF_VariableText_Iterator::CPDF_VariableText_Iterator(CPDF_VariableText* pVT)
     : m_CurPos(-1, -1, -1), m_pVT(pVT) {}
 CPDF_VariableText_Iterator::~CPDF_VariableText_Iterator() {}
 void CPDF_VariableText_Iterator::SetAt(int32_t nWordIndex) {
-  ASSERT(m_pVT != NULL);
   m_CurPos = m_pVT->WordIndexToWordPlace(nWordIndex);
 }
 void CPDF_VariableText_Iterator::SetAt(const CPVT_WordPlace& place) {
-  ASSERT(m_pVT != NULL);
+  ASSERT(m_pVT);
   m_CurPos = place;
 }
 FX_BOOL CPDF_VariableText_Iterator::NextWord() {
@@ -1738,7 +1734,7 @@ FX_BOOL CPDF_VariableText_Iterator::NextSection() {
   return FALSE;
 }
 FX_BOOL CPDF_VariableText_Iterator::PrevSection() {
-  ASSERT(m_pVT != NULL);
+  ASSERT(m_pVT);
   if (m_CurPos.nSecIndex > 0) {
     m_CurPos = CPVT_WordPlace(m_CurPos.nSecIndex - 1, 0, -1);
     return TRUE;
@@ -1746,7 +1742,6 @@ FX_BOOL CPDF_VariableText_Iterator::PrevSection() {
   return FALSE;
 }
 FX_BOOL CPDF_VariableText_Iterator::GetWord(CPVT_Word& word) const {
-  ASSERT(m_pVT != NULL);
   word.WordPlace = m_CurPos;
   if (CSection* pSection = m_pVT->m_SectionArray.GetAt(m_CurPos.nSecIndex)) {
     if (pSection->m_LineArray.GetAt(m_CurPos.nLineIndex)) {
@@ -1772,7 +1767,6 @@ FX_BOOL CPDF_VariableText_Iterator::GetWord(CPVT_Word& word) const {
   return FALSE;
 }
 FX_BOOL CPDF_VariableText_Iterator::SetWord(const CPVT_Word& word) {
-  ASSERT(m_pVT != NULL);
   if (CSection* pSection = m_pVT->m_SectionArray.GetAt(m_CurPos.nSecIndex)) {
     if (CPVT_WordInfo* pWord =
             pSection->m_WordArray.GetAt(m_CurPos.nWordIndex)) {
@@ -1785,7 +1779,7 @@ FX_BOOL CPDF_VariableText_Iterator::SetWord(const CPVT_Word& word) {
   return FALSE;
 }
 FX_BOOL CPDF_VariableText_Iterator::GetLine(CPVT_Line& line) const {
-  ASSERT(m_pVT != NULL);
+  ASSERT(m_pVT);
   line.lineplace = CPVT_WordPlace(m_CurPos.nSecIndex, m_CurPos.nLineIndex, -1);
   if (CSection* pSection = m_pVT->m_SectionArray.GetAt(m_CurPos.nSecIndex)) {
     if (CLine* pLine = pSection->m_LineArray.GetAt(m_CurPos.nLineIndex)) {
@@ -1802,7 +1796,6 @@ FX_BOOL CPDF_VariableText_Iterator::GetLine(CPVT_Line& line) const {
   return FALSE;
 }
 FX_BOOL CPDF_VariableText_Iterator::GetSection(CPVT_Section& section) const {
-  ASSERT(m_pVT != NULL);
   section.secplace = CPVT_WordPlace(m_CurPos.nSecIndex, 0, -1);
   if (CSection* pSection = m_pVT->m_SectionArray.GetAt(m_CurPos.nSecIndex)) {
     section.rcSection = m_pVT->InToOut(pSection->m_SecInfo.rcSection);
@@ -1817,7 +1810,6 @@ FX_BOOL CPDF_VariableText_Iterator::GetSection(CPVT_Section& section) const {
   return FALSE;
 }
 FX_BOOL CPDF_VariableText_Iterator::SetSection(const CPVT_Section& section) {
-  ASSERT(m_pVT != NULL);
   if (CSection* pSection = m_pVT->m_SectionArray.GetAt(m_CurPos.nSecIndex)) {
     if (pSection->m_SecInfo.pSecProps) {
       *pSection->m_SecInfo.pSecProps = section.SecProps;