Cleanup CPDF_Form parsing codechromium/3431

This CL folds the StartParse() method of CPDF_Form into the
ParserContent method. The no arguments ParseContent is removed and
ParseContentWithParams renamed to ParseContent. The callsites are
updated to pass the nullptr's.

Bug: chromium:813349
Change-Id: I304b77aef1de1b9aa20e4a3044db5023f5701584
Reviewed-on: https://pdfium-review.googlesource.com/32511
Reviewed-by: Henrique Nakashima <hnakashima@chromium.org>
Commit-Queue: dsinclair <dsinclair@chromium.org>

8 files changed, 16 insertions, 32 deletions

diff --git a/core/fpdfapi/edit/cpdf_pagecontentgenerator_unittest.cpp b/core/fpdfapi/edit/cpdf_pagecontentgenerator_unittest.cpp
index e9b3d15d30..d97e8abf0b 100644
--- a/core/fpdfapi/edit/cpdf_pagecontentgenerator_unittest.cpp
+++ b/core/fpdfapi/edit/cpdf_pagecontentgenerator_unittest.cpp
@@ -298,7 +298,7 @@ TEST_F(CPDF_PageContentGeneratorTest, ProcessEmptyForm) {
   // Create an empty form.
   auto pTestForm =
       pdfium::MakeUnique<CPDF_Form>(pDoc.get(), nullptr, pStream.get());
-  pTestForm->ParseContent();
+  pTestForm->ParseContent(nullptr, nullptr, nullptr, nullptr);
   ASSERT_TRUE(pTestForm->IsParsed());
 
   // The generated stream for the empty form should be an empty string.
@@ -324,7 +324,7 @@ TEST_F(CPDF_PageContentGeneratorTest, ProcessFormWithPath) {
   // Create a form with a non-empty stream.
   auto pTestForm =
       pdfium::MakeUnique<CPDF_Form>(pDoc.get(), nullptr, pStream.get());
-  pTestForm->ParseContent();
+  pTestForm->ParseContent(nullptr, nullptr, nullptr, nullptr);
   ASSERT_TRUE(pTestForm->IsParsed());
 
   CPDF_PageContentGenerator generator(pTestForm.get());
diff --git a/core/fpdfapi/font/cpdf_type3font.cpp b/core/fpdfapi/font/cpdf_type3font.cpp
index 824d6f45d0..c321f87897 100644
--- a/core/fpdfapi/font/cpdf_type3font.cpp
+++ b/core/fpdfapi/font/cpdf_type3font.cpp
@@ -115,8 +115,7 @@ CPDF_Type3Char* CPDF_Type3Font::LoadChar(uint32_t charcode) {
   // can change as a result. Thus after it returns, check the cache again for
   // a cache hit.
   m_CharLoadingDepth++;
-  pNewChar->form()->ParseContentWithParams(nullptr, nullptr, pNewChar.get(),
-                                           nullptr);
+  pNewChar->form()->ParseContent(nullptr, nullptr, pNewChar.get(), nullptr);
   m_CharLoadingDepth--;
   it = m_CacheMap.find(charcode);
   if (it != m_CacheMap.end())
diff --git a/core/fpdfapi/page/cpdf_form.cpp b/core/fpdfapi/page/cpdf_form.cpp
index 3abeff4829..a63d3ce96d 100644
--- a/core/fpdfapi/page/cpdf_form.cpp
+++ b/core/fpdfapi/page/cpdf_form.cpp
@@ -29,12 +29,12 @@ CPDF_Form::CPDF_Form(CPDF_Document* pDoc,
   LoadTransInfo();
 }
 
-CPDF_Form::~CPDF_Form() {}
+CPDF_Form::~CPDF_Form() = default;
 
-void CPDF_Form::StartParse(CPDF_AllStates* pGraphicStates,
-                           const CFX_Matrix* pParentMatrix,
-                           CPDF_Type3Char* pType3Char,
-                           std::set<const uint8_t*>* parsedSet) {
+void CPDF_Form::ParseContent(CPDF_AllStates* pGraphicStates,
+                             const CFX_Matrix* pParentMatrix,
+                             CPDF_Type3Char* pType3Char,
+                             std::set<const uint8_t*>* parsedSet) {
   if (m_ParseState == CONTENT_PARSED || m_ParseState == CONTENT_PARSING)
     return;
 
@@ -47,16 +47,6 @@ void CPDF_Form::StartParse(CPDF_AllStates* pGraphicStates,
   m_pParser = pdfium::MakeUnique<CPDF_ContentParser>(
       this, pGraphicStates, pParentMatrix, pType3Char, parsedSet);
   m_ParseState = CONTENT_PARSING;
-}
-
-void CPDF_Form::ParseContent() {
-  ParseContentWithParams(nullptr, nullptr, nullptr, nullptr);
-}
 
-void CPDF_Form::ParseContentWithParams(CPDF_AllStates* pGraphicStates,
-                                       const CFX_Matrix* pParentMatrix,
-                                       CPDF_Type3Char* pType3Char,
-                                       std::set<const uint8_t*>* parsedSet) {
-  StartParse(pGraphicStates, pParentMatrix, pType3Char, parsedSet);
   ContinueParse(nullptr);
 }
diff --git a/core/fpdfapi/page/cpdf_form.h b/core/fpdfapi/page/cpdf_form.h
index c5285a1d01..9f2987ddb6 100644
--- a/core/fpdfapi/page/cpdf_form.h
+++ b/core/fpdfapi/page/cpdf_form.h
@@ -27,18 +27,12 @@ class CPDF_Form : public CPDF_PageObjectHolder {
             CPDF_Dictionary* pParentResources = nullptr);
   ~CPDF_Form() override;
 
-  void ParseContent();
-  void ParseContentWithParams(CPDF_AllStates* pGraphicStates,
-                              const CFX_Matrix* pParentMatrix,
-                              CPDF_Type3Char* pType3Char,
-                              std::set<const uint8_t*>* parsedSet);
+  void ParseContent(CPDF_AllStates* pGraphicStates,
+                    const CFX_Matrix* pParentMatrix,
+                    CPDF_Type3Char* pType3Char,
+                    std::set<const uint8_t*>* parsedSet);
 
  private:
-  void StartParse(CPDF_AllStates* pGraphicStates,
-                  const CFX_Matrix* pParentMatrix,
-                  CPDF_Type3Char* pType3Char,
-                  std::set<const uint8_t*>* parsedSet);
-
   std::unique_ptr<std::set<const uint8_t*>> m_ParsedSet;
 };
 
diff --git a/core/fpdfapi/page/cpdf_pageobjectholder.cpp b/core/fpdfapi/page/cpdf_pageobjectholder.cpp
index 1d39802658..87a1aebaab 100644
--- a/core/fpdfapi/page/cpdf_pageobjectholder.cpp
+++ b/core/fpdfapi/page/cpdf_pageobjectholder.cpp
@@ -40,6 +40,7 @@ void CPDF_PageObjectHolder::ContinueParse(PauseIndicatorIface* pPause) {
   m_ParseState = CONTENT_PARSED;
   if (m_pParser->GetCurStates())
     m_LastCTM = m_pParser->GetCurStates()->m_CTM;
+
   m_pParser.reset();
 }
 
diff --git a/core/fpdfapi/page/cpdf_streamcontentparser.cpp b/core/fpdfapi/page/cpdf_streamcontentparser.cpp
index df69aa43b9..5f4bdf794d 100644
--- a/core/fpdfapi/page/cpdf_streamcontentparser.cpp
+++ b/core/fpdfapi/page/cpdf_streamcontentparser.cpp
@@ -781,7 +781,7 @@ void CPDF_StreamContentParser::AddForm(CPDF_Stream* pStream) {
   status.m_TextState = m_pCurStates->m_TextState;
   auto form = pdfium::MakeUnique<CPDF_Form>(
       m_pDocument.Get(), m_pPageResources.Get(), pStream, m_pResources.Get());
-  form->ParseContentWithParams(&status, nullptr, nullptr, m_ParsedSet.Get());
+  form->ParseContent(&status, nullptr, nullptr, m_ParsedSet.Get());
 
   CFX_Matrix matrix = m_pCurStates->m_CTM;
   matrix.Concat(m_mtContentToUser);
diff --git a/core/fpdfapi/page/cpdf_tilingpattern.cpp b/core/fpdfapi/page/cpdf_tilingpattern.cpp
index 02127b6368..5a71baaf7b 100644
--- a/core/fpdfapi/page/cpdf_tilingpattern.cpp
+++ b/core/fpdfapi/page/cpdf_tilingpattern.cpp
@@ -49,7 +49,7 @@ bool CPDF_TilingPattern::Load() {
 
   const CFX_Matrix& matrix = parent_matrix();
   m_pForm = pdfium::MakeUnique<CPDF_Form>(document(), nullptr, pStream);
-  m_pForm->ParseContentWithParams(nullptr, &matrix, nullptr, nullptr);
+  m_pForm->ParseContent(nullptr, &matrix, nullptr, nullptr);
   m_BBox = pDict->GetRectFor("BBox");
   return true;
 }
diff --git a/core/fpdfapi/render/cpdf_renderstatus.cpp b/core/fpdfapi/render/cpdf_renderstatus.cpp
index 6752fd1250..f33b304b63 100644
--- a/core/fpdfapi/render/cpdf_renderstatus.cpp
+++ b/core/fpdfapi/render/cpdf_renderstatus.cpp
@@ -2546,7 +2546,7 @@ RetainPtr<CFX_DIBitmap> CPDF_RenderStatus::LoadSMask(
 
   CPDF_Form form(m_pContext->GetDocument(), m_pContext->GetPageResources(),
                  pGroup);
-  form.ParseContent();
+  form.ParseContent(nullptr, nullptr, nullptr, nullptr);
 
   CFX_DefaultRenderDevice bitmap_device;
   bool bLuminosity =