Remove unnecessary ToArray() calls and locals in CPDF_Dest.chromium/3535

Rename GetObject() to GetArray() and remove more ToArray() calls.

Change-Id: I754ca72b32c085e1801d3cedcd291ce4d2682359
Reviewed-on: https://pdfium-review.googlesource.com/41353
Commit-Queue: Lei Zhang <thestig@chromium.org>
Reviewed-by: Tom Sepez <tsepez@chromium.org>

2 files changed, 22 insertions, 28 deletions

diff --git a/core/fpdfdoc/cpdf_dest.cpp b/core/fpdfdoc/cpdf_dest.cpp
index 8dd58b185a..308336e5d9 100644
--- a/core/fpdfdoc/cpdf_dest.cpp
+++ b/core/fpdfdoc/cpdf_dest.cpp
@@ -34,16 +34,15 @@ CPDF_Dest::CPDF_Dest() {}
 
 CPDF_Dest::CPDF_Dest(const CPDF_Dest& that) = default;
 
-CPDF_Dest::CPDF_Dest(const CPDF_Array* pObj) : m_pObj(pObj) {}
+CPDF_Dest::CPDF_Dest(const CPDF_Array* pArray) : m_pArray(pArray) {}
 
 CPDF_Dest::~CPDF_Dest() {}
 
 int CPDF_Dest::GetDestPageIndex(CPDF_Document* pDoc) const {
-  const CPDF_Array* pArray = ToArray(m_pObj.Get());
-  if (!pArray)
+  if (!m_pArray)
     return -1;
 
-  const CPDF_Object* pPage = pArray->GetDirectObjectAt(0);
+  const CPDF_Object* pPage = m_pArray->GetDirectObjectAt(0);
   if (!pPage)
     return -1;
 
@@ -57,11 +56,10 @@ int CPDF_Dest::GetDestPageIndex(CPDF_Document* pDoc) const {
 }
 
 uint32_t CPDF_Dest::GetPageObjNum() const {
-  const CPDF_Array* pArray = ToArray(m_pObj.Get());
-  if (!pArray)
+  if (!m_pArray)
     return 0;
 
-  const CPDF_Object* pPage = pArray->GetDirectObjectAt(0);
+  const CPDF_Object* pPage = m_pArray->GetDirectObjectAt(0);
   if (!pPage)
     return 0;
   if (pPage->IsNumber())
@@ -72,15 +70,14 @@ uint32_t CPDF_Dest::GetPageObjNum() const {
 }
 
 int CPDF_Dest::GetZoomMode() const {
-  const CPDF_Array* pArray = ToArray(m_pObj.Get());
-  if (!pArray)
+  if (!m_pArray)
     return 0;
 
-  const CPDF_Object* pObj = pArray->GetDirectObjectAt(1);
-  if (!pObj)
+  const CPDF_Object* pArray = m_pArray->GetDirectObjectAt(1);
+  if (!pArray)
     return 0;
 
-  ByteString mode = pObj->GetString();
+  ByteString mode = pArray->GetString();
   for (int i = 1; g_sZoomModes[i]; ++i) {
     if (mode == g_sZoomModes[i])
       return i;
@@ -99,20 +96,19 @@ bool CPDF_Dest::GetXYZ(bool* pHasX,
   *pHasY = false;
   *pHasZoom = false;
 
-  const CPDF_Array* pArray = ToArray(m_pObj.Get());
-  if (!pArray)
+  if (!m_pArray)
     return false;
 
-  if (pArray->GetCount() < 5)
+  if (m_pArray->GetCount() < 5)
     return false;
 
-  const CPDF_Name* xyz = ToName(pArray->GetDirectObjectAt(1));
+  const CPDF_Name* xyz = ToName(m_pArray->GetDirectObjectAt(1));
   if (!xyz || xyz->GetString() != "XYZ")
     return false;
 
-  const CPDF_Number* numX = ToNumber(pArray->GetDirectObjectAt(2));
-  const CPDF_Number* numY = ToNumber(pArray->GetDirectObjectAt(3));
-  const CPDF_Number* numZoom = ToNumber(pArray->GetDirectObjectAt(4));
+  const CPDF_Number* numX = ToNumber(m_pArray->GetDirectObjectAt(2));
+  const CPDF_Number* numY = ToNumber(m_pArray->GetDirectObjectAt(3));
+  const CPDF_Number* numZoom = ToNumber(m_pArray->GetDirectObjectAt(4));
 
   // If the value is a CPDF_Null then ToNumber will return nullptr.
   *pHasX = !!numX;
@@ -137,20 +133,18 @@ bool CPDF_Dest::GetXYZ(bool* pHasX,
 }
 
 unsigned long CPDF_Dest::GetNumParams() const {
-  const CPDF_Array* pArray = ToArray(m_pObj.Get());
-  if (!pArray || pArray->GetCount() < 2)
+  if (!m_pArray || m_pArray->GetCount() < 2)
     return 0;
 
   unsigned long maxParamsForFitType = g_sZoomModeMaxParamCount[GetZoomMode()];
-  unsigned long numParamsInArray = pArray->GetCount() - 2;
+  unsigned long numParamsInArray = m_pArray->GetCount() - 2;
   return std::min(maxParamsForFitType, numParamsInArray);
 }
 
 float CPDF_Dest::GetParam(int index) const {
-  const CPDF_Array* pArray = ToArray(m_pObj.Get());
-  return pArray ? pArray->GetNumberAt(2 + index) : 0;
+  return m_pArray ? m_pArray->GetNumberAt(2 + index) : 0;
 }
 
 ByteString CPDF_Dest::GetRemoteName() const {
-  return m_pObj ? m_pObj->GetString() : ByteString();
+  return m_pArray ? m_pArray->GetString() : ByteString();
 }
diff --git a/core/fpdfdoc/cpdf_dest.h b/core/fpdfdoc/cpdf_dest.h
index c30db1183c..ff8458d500 100644
--- a/core/fpdfdoc/cpdf_dest.h
+++ b/core/fpdfdoc/cpdf_dest.h
@@ -18,10 +18,10 @@ class CPDF_Dest {
  public:
   CPDF_Dest();
   CPDF_Dest(const CPDF_Dest& that);
-  explicit CPDF_Dest(const CPDF_Array* pObj);
+  explicit CPDF_Dest(const CPDF_Array* pArray);
   ~CPDF_Dest();
 
-  const CPDF_Array* GetObject() const { return m_pObj.Get(); }
+  const CPDF_Array* GetArray() const { return m_pArray.Get(); }
   ByteString GetRemoteName() const;
 
   int GetDestPageIndex(CPDF_Document* pDoc) const;
@@ -41,7 +41,7 @@ class CPDF_Dest {
               float* pZoom) const;
 
  private:
-  UnownedPtr<const CPDF_Array> const m_pObj;
+  UnownedPtr<const CPDF_Array> const m_pArray;
 };
 
 #endif  // CORE_FPDFDOC_CPDF_DEST_H_