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 .

15 files changed, 28 insertions, 36 deletions

diff --git a/core/src/fpdfapi/fpdf_edit/fpdf_edit_content.cpp b/core/src/fpdfapi/fpdf_edit/fpdf_edit_content.cpp
index 4df841fb75..eda51deb3b 100644
--- a/core/src/fpdfapi/fpdf_edit/fpdf_edit_content.cpp
+++ b/core/src/fpdfapi/fpdf_edit/fpdf_edit_content.cpp
@@ -45,7 +45,7 @@ void CPDF_PageContentGenerate::GenerateContent() {
   }
   CPDF_Object* pContent =
       pPageDict ? pPageDict->GetElementValue("Contents") : NULL;
-  if (pContent != NULL) {
+  if (pContent) {
     pPageDict->RemoveAt("Contents");
   }
   CPDF_Stream* pStream = new CPDF_Stream(NULL, 0, NULL);
diff --git a/core/src/fpdfapi/fpdf_edit/fpdf_edit_create.cpp b/core/src/fpdfapi/fpdf_edit/fpdf_edit_create.cpp
index 52129d9e54..a797332727 100644
--- a/core/src/fpdfapi/fpdf_edit/fpdf_edit_create.cpp
+++ b/core/src/fpdfapi/fpdf_edit/fpdf_edit_create.cpp
@@ -1433,8 +1433,8 @@ void CPDF_Creator::InitNewObjNumOffsets() {
   FX_BOOL bNewStart = FALSE;
   for (; i < iCount; i++) {
     FX_DWORD dwCurObjNum = m_NewObjNumArray.ElementAt(i);
-    FX_BOOL bExist = (dwCurObjNum < nOldSize &&
-                      m_ObjectOffset.GetPtrAt(dwCurObjNum) != NULL);
+    FX_BOOL bExist =
+        (dwCurObjNum < nOldSize && m_ObjectOffset.GetPtrAt(dwCurObjNum));
     if (bExist || dwCurObjNum - dwLastObjNum > 1) {
       if (!bNewStart) {
         m_ObjectOffset.Add(dwStartObjNum, dwLastObjNum - dwStartObjNum + 1);
diff --git a/core/src/fpdfapi/fpdf_edit/fpdf_edit_doc.cpp b/core/src/fpdfapi/fpdf_edit/fpdf_edit_doc.cpp
index 5467cfdaec..7febc7932f 100644
--- a/core/src/fpdfapi/fpdf_edit/fpdf_edit_doc.cpp
+++ b/core/src/fpdfapi/fpdf_edit/fpdf_edit_doc.cpp
@@ -429,7 +429,7 @@ CPDF_Font* CPDF_Document::AddWindowsFont(LOGFONTA* pLogFont,
 
 #if (_FXM_PLATFORM_ == _FXM_PLATFORM_APPLE_)
 uint32_t FX_GetLangHashCode(const FX_CHAR* pStr) {
-  FXSYS_assert(pStr != NULL);
+  FXSYS_assert(pStr);
   int32_t iLength = FXSYS_strlen(pStr);
   const FX_CHAR* pStrEnd = pStr + iLength;
   uint32_t uHashCode = 0;
diff --git a/core/src/fpdfapi/fpdf_edit/fpdf_edit_image.cpp b/core/src/fpdfapi/fpdf_edit/fpdf_edit_image.cpp
index ccb184c6cf..640e8671f8 100644
--- a/core/src/fpdfapi/fpdf_edit/fpdf_edit_image.cpp
+++ b/core/src/fpdfapi/fpdf_edit/fpdf_edit_image.cpp
@@ -259,7 +259,7 @@ void CPDF_Image::SetImage(const CFX_DIBitmap* pBitmap,
       delete pMaskBitmap;
     }
   }
-  FX_BOOL bStream = pFileWrite != NULL && pFileRead != NULL;
+  FX_BOOL bStream = pFileWrite && pFileRead;
   if (opType == 0) {
     if (iCompress & PDF_IMAGE_LOSSLESS_COMPRESS) {
       if (pBitmap->GetBPP() == 1) {
@@ -270,7 +270,7 @@ void CPDF_Image::SetImage(const CFX_DIBitmap* pBitmap,
       if (pBitmap->GetBPP() == 1) {
         _JBIG2EncodeBitmap(pDict, pBitmap, m_pDocument, dest_buf, dest_size,
                            FALSE);
-      } else if (pBitmap->GetBPP() >= 8 && pBitmap->GetPalette() != NULL) {
+      } else if (pBitmap->GetBPP() >= 8 && pBitmap->GetPalette()) {
         CFX_DIBitmap* pNewBitmap = new CFX_DIBitmap();
         pNewBitmap->Copy(pBitmap);
         pNewBitmap->ConvertFormat(FXDIB_Rgb);
diff --git a/core/src/fpdfapi/fpdf_font/fpdf_font.cpp b/core/src/fpdfapi/fpdf_font/fpdf_font.cpp
index b515d90a7f..4a71382da4 100644
--- a/core/src/fpdfapi/fpdf_font/fpdf_font.cpp
+++ b/core/src/fpdfapi/fpdf_font/fpdf_font.cpp
@@ -1519,7 +1519,7 @@ void CPDF_TrueTypeFont::LoadGlyphMap() {
         }
       }
       if ((m_GlyphIndex[charcode] == 0 || m_GlyphIndex[charcode] == 0xffff) &&
-          name != NULL) {
+          name) {
         if (name[0] == '.' && FXSYS_strcmp(name, ".notdef") == 0) {
           m_GlyphIndex[charcode] = FXFT_Get_Char_Index(m_Font.GetFace(), 32);
         } else {
diff --git a/core/src/fpdfapi/fpdf_font/ttgsubtable.h b/core/src/fpdfapi/fpdf_font/ttgsubtable.h
index e3c9965654..605d25fd57 100644
--- a/core/src/fpdfapi/fpdf_font/ttgsubtable.h
+++ b/core/src/fpdfapi/fpdf_font/ttgsubtable.h
@@ -277,10 +277,9 @@ class CFX_CTTGSUBTable {
     TLookup()
         : LookupType(0), LookupFlag(0), SubTableCount(0), SubTable(NULL) {}
     ~TLookup() {
-      if (SubTableCount > 0 && SubTable != NULL) {
-        for (int i = 0; i < SubTableCount; i++) {
+      if (SubTable) {
+        for (int i = 0; i < SubTableCount; ++i)
           delete SubTable[i];
-        }
         delete[] SubTable;
       }
     }
diff --git a/core/src/fpdfapi/fpdf_page/fpdf_page_parser_old.cpp b/core/src/fpdfapi/fpdf_page/fpdf_page_parser_old.cpp
index 0bf044101c..fbe6faa471 100644
--- a/core/src/fpdfapi/fpdf_page/fpdf_page_parser_old.cpp
+++ b/core/src/fpdfapi/fpdf_page/fpdf_page_parser_old.cpp
@@ -349,7 +349,7 @@ CPDF_Stream* CPDF_StreamParser::ReadInlineStream(CPDF_Document* pDoc,
   FX_DWORD width = pDict->GetInteger("Width");
   FX_DWORD height = pDict->GetInteger("Height");
   FX_DWORD OrigSize = 0;
-  if (pCSObj != NULL) {
+  if (pCSObj) {
     FX_DWORD bpc = pDict->GetInteger("BitsPerComponent");
     FX_DWORD nComponents = 1;
     CPDF_ColorSpace* pCS = pDoc->LoadColorSpace(pCSObj);
diff --git a/core/src/fpdfapi/fpdf_page/fpdf_page_pattern.cpp b/core/src/fpdfapi/fpdf_page/fpdf_page_pattern.cpp
index e1a7493a2f..5ead9a5bea 100644
--- a/core/src/fpdfapi/fpdf_page/fpdf_page_pattern.cpp
+++ b/core/src/fpdfapi/fpdf_page/fpdf_page_pattern.cpp
@@ -44,7 +44,7 @@ CPDF_TilingPattern::CPDF_TilingPattern(CPDF_Document* pDoc,
   m_pPatternObj = pPatternObj;
   m_pDocument = pDoc;
   CPDF_Dictionary* pDict = m_pPatternObj->GetDict();
-  ASSERT(pDict != NULL);
+  ASSERT(pDict);
   m_Pattern2Form = pDict->GetMatrix("Matrix");
   m_bColored = pDict->GetInteger("PaintType") == 1;
   if (parentMatrix) {
@@ -88,7 +88,7 @@ CPDF_ShadingPattern::CPDF_ShadingPattern(CPDF_Document* pDoc,
   m_bShadingObj = bShading;
   if (!bShading) {
     CPDF_Dictionary* pDict = m_pPatternObj->GetDict();
-    ASSERT(pDict != NULL);
+    ASSERT(pDict);
     m_Pattern2Form = pDict->GetMatrix("Matrix");
     m_pShadingObj = pDict->GetElementValue("Shading");
     if (parentMatrix) {
diff --git a/core/src/fpdfapi/fpdf_parser/fpdf_parser_document.cpp b/core/src/fpdfapi/fpdf_parser/fpdf_parser_document.cpp
index 2d7c4b0eec..6625cce2e6 100644
--- a/core/src/fpdfapi/fpdf_parser/fpdf_parser_document.cpp
+++ b/core/src/fpdfapi/fpdf_parser/fpdf_parser_document.cpp
@@ -9,7 +9,7 @@
 
 CPDF_Document::CPDF_Document(CPDF_Parser* pParser)
     : CPDF_IndirectObjects(pParser) {
-  ASSERT(pParser != NULL);
+  ASSERT(pParser);
   m_pRootDict = NULL;
   m_pInfoDict = NULL;
   m_bLinearized = FALSE;
diff --git a/core/src/fpdfapi/fpdf_parser/fpdf_parser_objects.cpp b/core/src/fpdfapi/fpdf_parser/fpdf_parser_objects.cpp
index 857e19c28f..58b03c1887 100644
--- a/core/src/fpdfapi/fpdf_parser/fpdf_parser_objects.cpp
+++ b/core/src/fpdfapi/fpdf_parser/fpdf_parser_objects.cpp
@@ -161,7 +161,6 @@ CPDF_Array* CPDF_Object::GetArray() const {
   return const_cast<CPDF_Array*>(AsArray());
 }
 void CPDF_Object::SetString(const CFX_ByteString& str) {
-  ASSERT(this != NULL);
   switch (m_Type) {
     case PDFOBJ_BOOLEAN:
       AsBoolean()->m_bValue = (str == "true");
@@ -526,17 +525,15 @@ void CPDF_Array::SetAt(FX_DWORD i,
 void CPDF_Array::InsertAt(FX_DWORD index,
                           CPDF_Object* pObj,
                           CPDF_IndirectObjects* pObjs) {
-  ASSERT(pObj != NULL);
   if (pObj->GetObjNum()) {
-    ASSERT(pObjs != NULL);
+    ASSERT(pObjs);
     pObj = new CPDF_Reference(pObjs, pObj->GetObjNum());
   }
   m_Objects.InsertAt(index, pObj);
 }
 void CPDF_Array::Add(CPDF_Object* pObj, CPDF_IndirectObjects* pObjs) {
-  ASSERT(pObj != NULL);
   if (pObj->GetObjNum()) {
-    ASSERT(pObjs != NULL);
+    ASSERT(pObjs);
     pObj = new CPDF_Reference(pObjs, pObj->GetObjNum());
   }
   m_Objects.Add(pObj);
diff --git a/core/src/fpdfapi/fpdf_render/fpdf_render.cpp b/core/src/fpdfapi/fpdf_render/fpdf_render.cpp
index d7c3b6e6e8..801f9e737c 100644
--- a/core/src/fpdfapi/fpdf_render/fpdf_render.cpp
+++ b/core/src/fpdfapi/fpdf_render/fpdf_render.cpp
@@ -434,7 +434,7 @@ void CPDF_RenderStatus::DrawObjWithBackground(const CPDF_PageObject* pObj,
     res = 0;
   }
   CPDF_ScaledRenderBuffer buffer;
-  if (!buffer.Initialize(m_pContext, m_pDevice, &rect, pObj, &m_Options, res)) {
+  if (!buffer.Initialize(m_pContext, m_pDevice, rect, pObj, &m_Options, res)) {
     return;
   }
   CFX_Matrix matrix = *pObj2Device;
@@ -537,12 +537,9 @@ FX_BOOL CPDF_RenderStatus::ProcessPath(CPDF_PathObject* pPathObj,
                              m_curBlend);
 }
 CPDF_TransferFunc* CPDF_RenderStatus::GetTransferFunc(CPDF_Object* pObj) const {
-  ASSERT(pObj != NULL);
+  ASSERT(pObj);
   CPDF_DocRenderData* pDocCache = m_pContext->m_pDocument->GetRenderData();
-  if (!pDocCache) {
-    return NULL;
-  }
-  return pDocCache->GetTransferFunc(pObj);
+  return pDocCache ? pDocCache->GetTransferFunc(pObj) : nullptr;
 }
 FX_ARGB CPDF_RenderStatus::GetFillArgb(const CPDF_PageObject* pObj,
                                        FX_BOOL bType3) const {
@@ -1343,19 +1340,18 @@ CPDF_ScaledRenderBuffer::~CPDF_ScaledRenderBuffer() {}
 #define _FPDFAPI_IMAGESIZE_LIMIT_ (30 * 1024 * 1024)
 FX_BOOL CPDF_ScaledRenderBuffer::Initialize(CPDF_RenderContext* pContext,
                                             CFX_RenderDevice* pDevice,
-                                            FX_RECT* pRect,
+                                            const FX_RECT& pRect,
                                             const CPDF_PageObject* pObj,
                                             const CPDF_RenderOptions* pOptions,
                                             int max_dpi) {
-  FXSYS_assert(pRect != NULL);
   m_pDevice = pDevice;
   if (m_pDevice->GetDeviceCaps(FXDC_RENDER_CAPS) & FXRC_GET_BITS) {
     return TRUE;
   }
   m_pContext = pContext;
-  m_Rect = *pRect;
+  m_Rect = pRect;
   m_pObject = pObj;
-  m_Matrix.TranslateI(-pRect->left, -pRect->top);
+  m_Matrix.TranslateI(-pRect.left, -pRect.top);
   int horz_size = pDevice->GetDeviceCaps(FXDC_HORZ_SIZE);
   int vert_size = pDevice->GetDeviceCaps(FXDC_VERT_SIZE);
   if (horz_size && vert_size && max_dpi) {
@@ -1380,7 +1376,7 @@ FX_BOOL CPDF_ScaledRenderBuffer::Initialize(CPDF_RenderContext* pContext,
   CFX_FloatRect rect;
   int32_t iWidth, iHeight, iPitch;
   while (1) {
-    rect = *pRect;
+    rect = pRect;
     m_Matrix.TransformRect(rect);
     FX_RECT bitmap_rect = rect.GetOutterRect();
     iWidth = bitmap_rect.Width();
diff --git a/core/src/fpdfapi/fpdf_render/fpdf_render_image.cpp b/core/src/fpdfapi/fpdf_render/fpdf_render_image.cpp
index 1d1c392af5..938a495eb1 100644
--- a/core/src/fpdfapi/fpdf_render/fpdf_render_image.cpp
+++ b/core/src/fpdfapi/fpdf_render/fpdf_render_image.cpp
@@ -344,7 +344,7 @@ FX_BOOL CPDF_ImageRenderer::StartLoadDIBSource() {
           m_LoadHandle, m_bStdCS, m_pRenderStatus->m_GroupFamily,
           m_pRenderStatus->m_bLoadMask, m_pRenderStatus, dest_width,
           dest_height)) {
-    if (m_LoadHandle != NULL) {
+    if (m_LoadHandle) {
       m_Status = 4;
       return TRUE;
     }
@@ -389,7 +389,7 @@ FX_BOOL CPDF_ImageRenderer::StartRenderDIBSource() {
     CPDF_Color* pColor = m_pImageObject->m_ColorState.GetFillColor();
     if (pColor && pColor->IsPattern()) {
       m_pPattern = pColor->GetPattern();
-      if (m_pPattern != NULL) {
+      if (m_pPattern) {
         m_bPatternColor = TRUE;
       }
     }
@@ -711,7 +711,7 @@ FX_BOOL CPDF_ImageRenderer::StartDIBSource() {
   if (m_pRenderStatus->m_pDevice->StartDIBits(
           m_pDIBSource, m_BitmapAlpha, m_FillArgb, &m_ImageMatrix, m_Flags,
           m_DeviceHandle, 0, NULL, m_BlendType)) {
-    if (m_DeviceHandle != NULL) {
+    if (m_DeviceHandle) {
       m_Status = 3;
       return TRUE;
     }
diff --git a/core/src/fpdfapi/fpdf_render/fpdf_render_loadimage.cpp b/core/src/fpdfapi/fpdf_render/fpdf_render_loadimage.cpp
index 70d2340c22..521ec16be1 100644
--- a/core/src/fpdfapi/fpdf_render/fpdf_render_loadimage.cpp
+++ b/core/src/fpdfapi/fpdf_render/fpdf_render_loadimage.cpp
@@ -788,7 +788,7 @@ int CPDF_DIBSource::StratLoadMask() {
   m_pMaskStream = m_pDict->GetStream("SMask");
   if (m_pMaskStream) {
     CPDF_Array* pMatte = m_pMaskStream->GetDict()->GetArray("Matte");
-    if (pMatte != NULL && m_pColorSpace &&
+    if (pMatte && m_pColorSpace &&
         (FX_DWORD)m_pColorSpace->CountComponents() <= m_nComponents) {
       FX_FLOAT R, G, B;
       FX_FLOAT* pColor = FX_Alloc(FX_FLOAT, m_nComponents);
diff --git a/core/src/fpdfapi/fpdf_render/fpdf_render_text.cpp b/core/src/fpdfapi/fpdf_render/fpdf_render_text.cpp
index 3a56058295..774e749322 100644
--- a/core/src/fpdfapi/fpdf_render/fpdf_render_text.cpp
+++ b/core/src/fpdfapi/fpdf_render/fpdf_render_text.cpp
@@ -313,7 +313,7 @@ static void ReleaseCachedType3(CPDF_Type3Font* pFont) {
   pFont->m_pDocument->GetPageData()->ReleaseFont(pFont->GetFontDict());
 }
 FX_BOOL CPDF_Type3Char::LoadBitmap(CPDF_RenderContext* pContext) {
-  if (m_pBitmap != NULL || m_pForm == NULL) {
+  if (m_pBitmap || m_pForm == NULL) {
     return TRUE;
   }
   if (m_pForm->CountObjects() == 1 && !m_bColored) {
diff --git a/core/src/fpdfapi/fpdf_render/render_int.h b/core/src/fpdfapi/fpdf_render/render_int.h
index d348b48dfd..26bef8ba42 100644
--- a/core/src/fpdfapi/fpdf_render/render_int.h
+++ b/core/src/fpdfapi/fpdf_render/render_int.h
@@ -384,7 +384,7 @@ class CPDF_ScaledRenderBuffer {
 
   FX_BOOL Initialize(CPDF_RenderContext* pContext,
                      CFX_RenderDevice* pDevice,
-                     FX_RECT* pRect,
+                     const FX_RECT& pRect,
                      const CPDF_PageObject* pObj,
                      const CPDF_RenderOptions* pOptions = NULL,
                      int max_dpi = 0);