Move core/fpdfapi/fpdf_page to core/fpdfapi/page

BUG=pdfium:603

Review-Url: https://codereview.chromium.org/2386423004

1 files changed, 0 insertions, 839 deletions

diff --git a/core/fpdfapi/fpdf_page/fpdf_page_parser_old.cpp b/core/fpdfapi/fpdf_page/fpdf_page_parser_old.cpp
deleted file mode 100644
index 3c3104b8ab..0000000000
--- a/core/fpdfapi/fpdf_page/fpdf_page_parser_old.cpp
+++ /dev/null
@@ -1,839 +0,0 @@
-// 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
-
-#include "core/fpdfapi/fpdf_page/pageint.h"
-
-#include <limits.h>
-
-#include "core/fpdfapi/cpdf_modulemgr.h"
-#include "core/fpdfapi/font/cpdf_type3char.h"
-#include "core/fpdfapi/fpdf_page/cpdf_allstates.h"
-#include "core/fpdfapi/fpdf_page/cpdf_form.h"
-#include "core/fpdfapi/fpdf_page/cpdf_page.h"
-#include "core/fpdfapi/fpdf_page/cpdf_pageobject.h"
-#include "core/fpdfapi/fpdf_page/cpdf_path.h"
-#include "core/fpdfapi/fpdf_parser/cpdf_array.h"
-#include "core/fpdfapi/fpdf_parser/cpdf_boolean.h"
-#include "core/fpdfapi/fpdf_parser/cpdf_dictionary.h"
-#include "core/fpdfapi/fpdf_parser/cpdf_document.h"
-#include "core/fpdfapi/fpdf_parser/cpdf_name.h"
-#include "core/fpdfapi/fpdf_parser/cpdf_null.h"
-#include "core/fpdfapi/fpdf_parser/cpdf_number.h"
-#include "core/fpdfapi/fpdf_parser/cpdf_stream.h"
-#include "core/fpdfapi/fpdf_parser/cpdf_stream_acc.h"
-#include "core/fpdfapi/fpdf_parser/cpdf_string.h"
-#include "core/fpdfapi/fpdf_parser/fpdf_parser_decode.h"
-#include "core/fpdfapi/fpdf_parser/fpdf_parser_utility.h"
-#include "core/fxcodec/fx_codec.h"
-#include "core/fxcrt/fx_ext.h"
-#include "core/fxcrt/fx_safe_types.h"
-#include "core/fxge/cfx_fxgedevice.h"
-#include "core/fxge/cfx_renderdevice.h"
-
-namespace {
-
-const uint32_t kMaxNestedArrayLevel = 512;
-const uint32_t kMaxWordBuffer = 256;
-const FX_STRSIZE kMaxStringLength = 32767;
-
-}  // namespace
-
-CPDF_StreamParser::CPDF_StreamParser(const uint8_t* pData, uint32_t dwSize)
-    : m_pBuf(pData),
-      m_Size(dwSize),
-      m_Pos(0),
-      m_pLastObj(nullptr),
-      m_pPool(nullptr) {}
-
-CPDF_StreamParser::CPDF_StreamParser(
-    const uint8_t* pData,
-    uint32_t dwSize,
-    const CFX_WeakPtr<CFX_ByteStringPool>& pPool)
-    : m_pBuf(pData),
-      m_Size(dwSize),
-      m_Pos(0),
-      m_pLastObj(nullptr),
-      m_pPool(pPool) {}
-
-CPDF_StreamParser::~CPDF_StreamParser() {
-  if (m_pLastObj) {
-    m_pLastObj->Release();
-  }
-}
-
-uint32_t DecodeAllScanlines(CCodec_ScanlineDecoder* pDecoder,
-                            uint8_t*& dest_buf,
-                            uint32_t& dest_size) {
-  if (!pDecoder) {
-    return FX_INVALID_OFFSET;
-  }
-  int ncomps = pDecoder->CountComps();
-  int bpc = pDecoder->GetBPC();
-  int width = pDecoder->GetWidth();
-  int height = pDecoder->GetHeight();
-  int pitch = (width * ncomps * bpc + 7) / 8;
-  if (height == 0 || pitch > (1 << 30) / height) {
-    delete pDecoder;
-    return FX_INVALID_OFFSET;
-  }
-  dest_buf = FX_Alloc2D(uint8_t, pitch, height);
-  dest_size = pitch * height;  // Safe since checked alloc returned.
-  for (int row = 0; row < height; row++) {
-    const uint8_t* pLine = pDecoder->GetScanline(row);
-    if (!pLine)
-      break;
-
-    FXSYS_memcpy(dest_buf + row * pitch, pLine, pitch);
-  }
-  uint32_t srcoff = pDecoder->GetSrcOffset();
-  delete pDecoder;
-  return srcoff;
-}
-
-CCodec_ScanlineDecoder* FPDFAPI_CreateFaxDecoder(
-    const uint8_t* src_buf,
-    uint32_t src_size,
-    int width,
-    int height,
-    const CPDF_Dictionary* pParams);
-
-uint32_t PDF_DecodeInlineStream(const uint8_t* src_buf,
-                                uint32_t limit,
-                                int width,
-                                int height,
-                                CFX_ByteString& decoder,
-                                CPDF_Dictionary* pParam,
-                                uint8_t*& dest_buf,
-                                uint32_t& dest_size) {
-  if (decoder == "CCITTFaxDecode" || decoder == "CCF") {
-    CCodec_ScanlineDecoder* pDecoder =
-        FPDFAPI_CreateFaxDecoder(src_buf, limit, width, height, pParam);
-    return DecodeAllScanlines(pDecoder, dest_buf, dest_size);
-  }
-  if (decoder == "ASCII85Decode" || decoder == "A85") {
-    return A85Decode(src_buf, limit, dest_buf, dest_size);
-  }
-  if (decoder == "ASCIIHexDecode" || decoder == "AHx") {
-    return HexDecode(src_buf, limit, dest_buf, dest_size);
-  }
-  if (decoder == "FlateDecode" || decoder == "Fl") {
-    return FPDFAPI_FlateOrLZWDecode(FALSE, src_buf, limit, pParam, dest_size,
-                                    dest_buf, dest_size);
-  }
-  if (decoder == "LZWDecode" || decoder == "LZW") {
-    return FPDFAPI_FlateOrLZWDecode(TRUE, src_buf, limit, pParam, 0, dest_buf,
-                                    dest_size);
-  }
-  if (decoder == "DCTDecode" || decoder == "DCT") {
-    CCodec_ScanlineDecoder* pDecoder =
-        CPDF_ModuleMgr::Get()->GetJpegModule()->CreateDecoder(
-            src_buf, limit, width, height, 0,
-            pParam ? pParam->GetIntegerFor("ColorTransform", 1) : 1);
-    return DecodeAllScanlines(pDecoder, dest_buf, dest_size);
-  }
-  if (decoder == "RunLengthDecode" || decoder == "RL") {
-    return RunLengthDecode(src_buf, limit, dest_buf, dest_size);
-  }
-  dest_size = 0;
-  dest_buf = 0;
-  return (uint32_t)-1;
-}
-
-CPDF_Stream* CPDF_StreamParser::ReadInlineStream(CPDF_Document* pDoc,
-                                                 CPDF_Dictionary* pDict,
-                                                 CPDF_Object* pCSObj) {
-  if (m_Pos == m_Size)
-    return nullptr;
-
-  if (PDFCharIsWhitespace(m_pBuf[m_Pos]))
-    m_Pos++;
-
-  CFX_ByteString Decoder;
-  CPDF_Dictionary* pParam = nullptr;
-  CPDF_Object* pFilter = pDict->GetDirectObjectFor("Filter");
-  if (pFilter) {
-    if (CPDF_Array* pArray = pFilter->AsArray()) {
-      Decoder = pArray->GetStringAt(0);
-      CPDF_Array* pParams = pDict->GetArrayFor("DecodeParms");
-      if (pParams)
-        pParam = pParams->GetDictAt(0);
-    } else {
-      Decoder = pFilter->GetString();
-      pParam = pDict->GetDictFor("DecodeParms");
-    }
-  }
-  uint32_t width = pDict->GetIntegerFor("Width");
-  uint32_t height = pDict->GetIntegerFor("Height");
-  uint32_t OrigSize = 0;
-  if (pCSObj) {
-    uint32_t bpc = pDict->GetIntegerFor("BitsPerComponent");
-    uint32_t nComponents = 1;
-    CPDF_ColorSpace* pCS = pDoc->LoadColorSpace(pCSObj);
-    if (pCS) {
-      nComponents = pCS->CountComponents();
-      pDoc->GetPageData()->ReleaseColorSpace(pCSObj);
-    } else {
-      nComponents = 3;
-    }
-    uint32_t pitch = width;
-    if (bpc && pitch > INT_MAX / bpc)
-      return nullptr;
-
-    pitch *= bpc;
-    if (nComponents && pitch > INT_MAX / nComponents)
-      return nullptr;
-
-    pitch *= nComponents;
-    if (pitch > INT_MAX - 7)
-      return nullptr;
-
-    pitch += 7;
-    pitch /= 8;
-    OrigSize = pitch;
-  } else {
-    if (width > INT_MAX - 7)
-      return nullptr;
-
-    OrigSize = ((width + 7) / 8);
-  }
-  if (height && OrigSize > INT_MAX / height)
-    return nullptr;
-
-  OrigSize *= height;
-  uint8_t* pData = nullptr;
-  uint32_t dwStreamSize;
-  if (Decoder.IsEmpty()) {
-    if (OrigSize > m_Size - m_Pos) {
-      OrigSize = m_Size - m_Pos;
-    }
-    pData = FX_Alloc(uint8_t, OrigSize);
-    FXSYS_memcpy(pData, m_pBuf + m_Pos, OrigSize);
-    dwStreamSize = OrigSize;
-    m_Pos += OrigSize;
-  } else {
-    uint32_t dwDestSize = OrigSize;
-    dwStreamSize =
-        PDF_DecodeInlineStream(m_pBuf + m_Pos, m_Size - m_Pos, width, height,
-                               Decoder, pParam, pData, dwDestSize);
-    FX_Free(pData);
-    if ((int)dwStreamSize < 0)
-      return nullptr;
-
-    uint32_t dwSavePos = m_Pos;
-    m_Pos += dwStreamSize;
-    while (1) {
-      uint32_t dwPrevPos = m_Pos;
-      CPDF_StreamParser::SyntaxType type = ParseNextElement();
-      if (type == CPDF_StreamParser::EndOfData)
-        break;
-
-      if (type != CPDF_StreamParser::Keyword) {
-        dwStreamSize += m_Pos - dwPrevPos;
-        continue;
-      }
-      if (GetWordSize() == 2 && GetWordBuf()[0] == 'E' &&
-          GetWordBuf()[1] == 'I') {
-        m_Pos = dwPrevPos;
-        break;
-      }
-      dwStreamSize += m_Pos - dwPrevPos;
-    }
-    m_Pos = dwSavePos;
-    pData = FX_Alloc(uint8_t, dwStreamSize);
-    FXSYS_memcpy(pData, m_pBuf + m_Pos, dwStreamSize);
-    m_Pos += dwStreamSize;
-  }
-  pDict->SetIntegerFor("Length", (int)dwStreamSize);
-  return new CPDF_Stream(pData, dwStreamSize, pDict);
-}
-
-CPDF_StreamParser::SyntaxType CPDF_StreamParser::ParseNextElement() {
-  if (m_pLastObj) {
-    m_pLastObj->Release();
-    m_pLastObj = nullptr;
-  }
-
-  m_WordSize = 0;
-  FX_BOOL bIsNumber = TRUE;
-  if (!PositionIsInBounds())
-    return EndOfData;
-
-  int ch = m_pBuf[m_Pos++];
-  while (1) {
-    while (PDFCharIsWhitespace(ch)) {
-      if (!PositionIsInBounds())
-        return EndOfData;
-
-      ch = m_pBuf[m_Pos++];
-    }
-
-    if (ch != '%')
-      break;
-
-    while (1) {
-      if (!PositionIsInBounds())
-        return EndOfData;
-
-      ch = m_pBuf[m_Pos++];
-      if (PDFCharIsLineEnding(ch))
-        break;
-    }
-  }
-
-  if (PDFCharIsDelimiter(ch) && ch != '/') {
-    m_Pos--;
-    m_pLastObj = ReadNextObject(false, 0);
-    return Others;
-  }
-
-  while (1) {
-    if (m_WordSize < kMaxWordBuffer)
-      m_WordBuffer[m_WordSize++] = ch;
-
-    if (!PDFCharIsNumeric(ch))
-      bIsNumber = FALSE;
-
-    if (!PositionIsInBounds())
-      break;
-
-    ch = m_pBuf[m_Pos++];
-
-    if (PDFCharIsDelimiter(ch) || PDFCharIsWhitespace(ch)) {
-      m_Pos--;
-      break;
-    }
-  }
-
-  m_WordBuffer[m_WordSize] = 0;
-  if (bIsNumber)
-    return Number;
-
-  if (m_WordBuffer[0] == '/')
-    return Name;
-
-  if (m_WordSize == 4) {
-    if (memcmp(m_WordBuffer, "true", 4) == 0) {
-      m_pLastObj = new CPDF_Boolean(TRUE);
-      return Others;
-    }
-    if (memcmp(m_WordBuffer, "null", 4) == 0) {
-      m_pLastObj = new CPDF_Null;
-      return Others;
-    }
-  } else if (m_WordSize == 5) {
-    if (memcmp(m_WordBuffer, "false", 5) == 0) {
-      m_pLastObj = new CPDF_Boolean(FALSE);
-      return Others;
-    }
-  }
-  return Keyword;
-}
-
-CPDF_Object* CPDF_StreamParser::ReadNextObject(bool bAllowNestedArray,
-                                               uint32_t dwInArrayLevel) {
-  FX_BOOL bIsNumber;
-  GetNextWord(bIsNumber);
-  if (!m_WordSize)
-    return nullptr;
-
-  if (bIsNumber) {
-    m_WordBuffer[m_WordSize] = 0;
-    return new CPDF_Number(CFX_ByteStringC(m_WordBuffer, m_WordSize));
-  }
-
-  int first_char = m_WordBuffer[0];
-  if (first_char == '/') {
-    CFX_ByteString name =
-        PDF_NameDecode(CFX_ByteStringC(m_WordBuffer + 1, m_WordSize - 1));
-    return new CPDF_Name(m_pPool ? m_pPool->Intern(name) : name);
-  }
-
-  if (first_char == '(') {
-    CFX_ByteString str = ReadString();
-    return new CPDF_String(m_pPool ? m_pPool->Intern(str) : str, FALSE);
-  }
-
-  if (first_char == '<') {
-    if (m_WordSize == 1)
-      return new CPDF_String(ReadHexString(), TRUE);
-
-    CPDF_Dictionary* pDict = new CPDF_Dictionary(m_pPool);
-    while (1) {
-      GetNextWord(bIsNumber);
-      if (m_WordSize == 2 && m_WordBuffer[0] == '>')
-        break;
-
-      if (!m_WordSize || m_WordBuffer[0] != '/') {
-        pDict->Release();
-        return nullptr;
-      }
-
-      CFX_ByteString key =
-          PDF_NameDecode(CFX_ByteStringC(m_WordBuffer + 1, m_WordSize - 1));
-      CPDF_Object* pObj = ReadNextObject(true, 0);
-      if (!pObj) {
-        pDict->Release();
-        return nullptr;
-      }
-
-      if (key.IsEmpty())
-        pObj->Release();
-      else
-        pDict->SetFor(key, pObj);
-    }
-    return pDict;
-  }
-
-  if (first_char == '[') {
-    if ((!bAllowNestedArray && dwInArrayLevel) ||
-        dwInArrayLevel > kMaxNestedArrayLevel) {
-      return nullptr;
-    }
-
-    CPDF_Array* pArray = new CPDF_Array;
-    while (1) {
-      CPDF_Object* pObj = ReadNextObject(bAllowNestedArray, dwInArrayLevel + 1);
-      if (pObj) {
-        pArray->Add(pObj);
-        continue;
-      }
-
-      if (!m_WordSize || m_WordBuffer[0] == ']')
-        break;
-    }
-    return pArray;
-  }
-
-  if (m_WordSize == 5 && !memcmp(m_WordBuffer, "false", 5))
-    return new CPDF_Boolean(FALSE);
-
-  if (m_WordSize == 4) {
-    if (memcmp(m_WordBuffer, "true", 4) == 0)
-      return new CPDF_Boolean(TRUE);
-
-    if (memcmp(m_WordBuffer, "null", 4) == 0)
-      return new CPDF_Null;
-  }
-
-  return nullptr;
-}
-
-void CPDF_StreamParser::GetNextWord(FX_BOOL& bIsNumber) {
-  m_WordSize = 0;
-  bIsNumber = TRUE;
-  if (!PositionIsInBounds())
-    return;
-
-  int ch = m_pBuf[m_Pos++];
-  while (1) {
-    while (PDFCharIsWhitespace(ch)) {
-      if (!PositionIsInBounds()) {
-        return;
-      }
-      ch = m_pBuf[m_Pos++];
-    }
-
-    if (ch != '%')
-      break;
-
-    while (1) {
-      if (!PositionIsInBounds())
-        return;
-      ch = m_pBuf[m_Pos++];
-      if (PDFCharIsLineEnding(ch))
-        break;
-    }
-  }
-
-  if (PDFCharIsDelimiter(ch)) {
-    bIsNumber = FALSE;
-    m_WordBuffer[m_WordSize++] = ch;
-    if (ch == '/') {
-      while (1) {
-        if (!PositionIsInBounds())
-          return;
-        ch = m_pBuf[m_Pos++];
-        if (!PDFCharIsOther(ch) && !PDFCharIsNumeric(ch)) {
-          m_Pos--;
-          return;
-        }
-
-        if (m_WordSize < kMaxWordBuffer)
-          m_WordBuffer[m_WordSize++] = ch;
-      }
-    } else if (ch == '<') {
-      if (!PositionIsInBounds())
-        return;
-      ch = m_pBuf[m_Pos++];
-      if (ch == '<')
-        m_WordBuffer[m_WordSize++] = ch;
-      else
-        m_Pos--;
-    } else if (ch == '>') {
-      if (!PositionIsInBounds())
-        return;
-      ch = m_pBuf[m_Pos++];
-      if (ch == '>')
-        m_WordBuffer[m_WordSize++] = ch;
-      else
-        m_Pos--;
-    }
-    return;
-  }
-
-  while (1) {
-    if (m_WordSize < kMaxWordBuffer)
-      m_WordBuffer[m_WordSize++] = ch;
-    if (!PDFCharIsNumeric(ch))
-      bIsNumber = FALSE;
-
-    if (!PositionIsInBounds())
-      return;
-    ch = m_pBuf[m_Pos++];
-    if (PDFCharIsDelimiter(ch) || PDFCharIsWhitespace(ch)) {
-      m_Pos--;
-      break;
-    }
-  }
-}
-
-CFX_ByteString CPDF_StreamParser::ReadString() {
-  if (!PositionIsInBounds())
-    return CFX_ByteString();
-
-  uint8_t ch = m_pBuf[m_Pos++];
-  CFX_ByteTextBuf buf;
-  int parlevel = 0;
-  int status = 0;
-  int iEscCode = 0;
-  while (1) {
-    switch (status) {
-      case 0:
-        if (ch == ')') {
-          if (parlevel == 0) {
-            if (buf.GetLength() > kMaxStringLength) {
-              return CFX_ByteString(buf.GetBuffer(), kMaxStringLength);
-            }
-            return buf.MakeString();
-          }
-          parlevel--;
-          buf.AppendChar(')');
-        } else if (ch == '(') {
-          parlevel++;
-          buf.AppendChar('(');
-        } else if (ch == '\\') {
-          status = 1;
-        } else {
-          buf.AppendChar((char)ch);
-        }
-        break;
-      case 1:
-        if (ch >= '0' && ch <= '7') {
-          iEscCode = FXSYS_toDecimalDigit(static_cast<FX_WCHAR>(ch));
-          status = 2;
-          break;
-        }
-        if (ch == 'n') {
-          buf.AppendChar('\n');
-        } else if (ch == 'r') {
-          buf.AppendChar('\r');
-        } else if (ch == 't') {
-          buf.AppendChar('\t');
-        } else if (ch == 'b') {
-          buf.AppendChar('\b');
-        } else if (ch == 'f') {
-          buf.AppendChar('\f');
-        } else if (ch == '\r') {
-          status = 4;
-          break;
-        } else if (ch == '\n') {
-        } else {
-          buf.AppendChar(ch);
-        }
-        status = 0;
-        break;
-      case 2:
-        if (ch >= '0' && ch <= '7') {
-          iEscCode =
-              iEscCode * 8 + FXSYS_toDecimalDigit(static_cast<FX_WCHAR>(ch));
-          status = 3;
-        } else {
-          buf.AppendChar(iEscCode);
-          status = 0;
-          continue;
-        }
-        break;
-      case 3:
-        if (ch >= '0' && ch <= '7') {
-          iEscCode =
-              iEscCode * 8 + FXSYS_toDecimalDigit(static_cast<FX_WCHAR>(ch));
-          buf.AppendChar(iEscCode);
-          status = 0;
-        } else {
-          buf.AppendChar(iEscCode);
-          status = 0;
-          continue;
-        }
-        break;
-      case 4:
-        status = 0;
-        if (ch != '\n') {
-          continue;
-        }
-        break;
-    }
-    if (!PositionIsInBounds())
-      break;
-
-    ch = m_pBuf[m_Pos++];
-  }
-  if (PositionIsInBounds())
-    ++m_Pos;
-
-  if (buf.GetLength() > kMaxStringLength) {
-    return CFX_ByteString(buf.GetBuffer(), kMaxStringLength);
-  }
-  return buf.MakeString();
-}
-
-CFX_ByteString CPDF_StreamParser::ReadHexString() {
-  if (!PositionIsInBounds())
-    return CFX_ByteString();
-
-  CFX_ByteTextBuf buf;
-  bool bFirst = true;
-  int code = 0;
-  while (PositionIsInBounds()) {
-    int ch = m_pBuf[m_Pos++];
-
-    if (ch == '>')
-      break;
-
-    if (!std::isxdigit(ch))
-      continue;
-
-    int val = FXSYS_toHexDigit(ch);
-    if (bFirst) {
-      code = val * 16;
-    } else {
-      code += val;
-      buf.AppendByte((uint8_t)code);
-    }
-    bFirst = !bFirst;
-  }
-  if (!bFirst)
-    buf.AppendChar((char)code);
-
-  if (buf.GetLength() > kMaxStringLength)
-    return CFX_ByteString(buf.GetBuffer(), kMaxStringLength);
-
-  return buf.MakeString();
-}
-
-bool CPDF_StreamParser::PositionIsInBounds() const {
-  return m_Pos < m_Size;
-}
-
-CPDF_ContentParser::CPDF_ContentParser()
-    : m_Status(Ready),
-      m_InternalStage(STAGE_GETCONTENT),
-      m_pObjectHolder(nullptr),
-      m_bForm(false),
-      m_pType3Char(nullptr),
-      m_pData(nullptr),
-      m_Size(0),
-      m_CurrentOffset(0) {}
-
-CPDF_ContentParser::~CPDF_ContentParser() {
-  if (!m_pSingleStream)
-    FX_Free(m_pData);
-}
-
-void CPDF_ContentParser::Start(CPDF_Page* pPage) {
-  if (m_Status != Ready || !pPage || !pPage->m_pDocument ||
-      !pPage->m_pFormDict) {
-    m_Status = Done;
-    return;
-  }
-  m_pObjectHolder = pPage;
-  m_bForm = FALSE;
-  m_Status = ToBeContinued;
-  m_InternalStage = STAGE_GETCONTENT;
-  m_CurrentOffset = 0;
-
-  CPDF_Object* pContent = pPage->m_pFormDict->GetDirectObjectFor("Contents");
-  if (!pContent) {
-    m_Status = Done;
-    return;
-  }
-  if (CPDF_Stream* pStream = pContent->AsStream()) {
-    m_nStreams = 0;
-    m_pSingleStream.reset(new CPDF_StreamAcc);
-    m_pSingleStream->LoadAllData(pStream, FALSE);
-  } else if (CPDF_Array* pArray = pContent->AsArray()) {
-    m_nStreams = pArray->GetCount();
-    if (m_nStreams)
-      m_StreamArray.resize(m_nStreams);
-    else
-      m_Status = Done;
-  } else {
-    m_Status = Done;
-  }
-}
-
-void CPDF_ContentParser::Start(CPDF_Form* pForm,
-                               CPDF_AllStates* pGraphicStates,
-                               const CFX_Matrix* pParentMatrix,
-                               CPDF_Type3Char* pType3Char,
-                               int level) {
-  m_pType3Char = pType3Char;
-  m_pObjectHolder = pForm;
-  m_bForm = TRUE;
-  CFX_Matrix form_matrix = pForm->m_pFormDict->GetMatrixFor("Matrix");
-  if (pGraphicStates) {
-    form_matrix.Concat(pGraphicStates->m_CTM);
-  }
-  CPDF_Array* pBBox = pForm->m_pFormDict->GetArrayFor("BBox");
-  CFX_FloatRect form_bbox;
-  CPDF_Path ClipPath;
-  if (pBBox) {
-    form_bbox = pBBox->GetRect();
-    ClipPath.Emplace();
-    ClipPath.AppendRect(form_bbox.left, form_bbox.bottom, form_bbox.right,
-                        form_bbox.top);
-    ClipPath.Transform(&form_matrix);
-    if (pParentMatrix) {
-      ClipPath.Transform(pParentMatrix);
-    }
-    form_bbox.Transform(&form_matrix);
-    if (pParentMatrix) {
-      form_bbox.Transform(pParentMatrix);
-    }
-  }
-  CPDF_Dictionary* pResources = pForm->m_pFormDict->GetDictFor("Resources");
-  m_pParser.reset(new CPDF_StreamContentParser(
-      pForm->m_pDocument, pForm->m_pPageResources, pForm->m_pResources,
-      pParentMatrix, pForm, pResources, &form_bbox, pGraphicStates, level));
-  m_pParser->GetCurStates()->m_CTM = form_matrix;
-  m_pParser->GetCurStates()->m_ParentMatrix = form_matrix;
-  if (ClipPath) {
-    m_pParser->GetCurStates()->m_ClipPath.AppendPath(ClipPath, FXFILL_WINDING,
-                                                     TRUE);
-  }
-  if (pForm->m_Transparency & PDFTRANS_GROUP) {
-    CPDF_GeneralState* pState = &m_pParser->GetCurStates()->m_GeneralState;
-    pState->SetBlendType(FXDIB_BLEND_NORMAL);
-    pState->SetStrokeAlpha(1.0f);
-    pState->SetFillAlpha(1.0f);
-    pState->SetSoftMask(nullptr);
-  }
-  m_nStreams = 0;
-  m_pSingleStream.reset(new CPDF_StreamAcc);
-  m_pSingleStream->LoadAllData(pForm->m_pFormStream, FALSE);
-  m_pData = (uint8_t*)m_pSingleStream->GetData();
-  m_Size = m_pSingleStream->GetSize();
-  m_Status = ToBeContinued;
-  m_InternalStage = STAGE_PARSE;
-  m_CurrentOffset = 0;
-}
-
-void CPDF_ContentParser::Continue(IFX_Pause* pPause) {
-  int steps = 0;
-  while (m_Status == ToBeContinued) {
-    if (m_InternalStage == STAGE_GETCONTENT) {
-      if (m_CurrentOffset == m_nStreams) {
-        if (!m_StreamArray.empty()) {
-          FX_SAFE_UINT32 safeSize = 0;
-          for (const auto& stream : m_StreamArray) {
-            safeSize += stream->GetSize();
-            safeSize += 1;
-          }
-          if (!safeSize.IsValid()) {
-            m_Status = Done;
-            return;
-          }
-          m_Size = safeSize.ValueOrDie();
-          m_pData = FX_Alloc(uint8_t, m_Size);
-          uint32_t pos = 0;
-          for (const auto& stream : m_StreamArray) {
-            FXSYS_memcpy(m_pData + pos, stream->GetData(), stream->GetSize());
-            pos += stream->GetSize();
-            m_pData[pos++] = ' ';
-          }
-          m_StreamArray.clear();
-        } else {
-          m_pData = (uint8_t*)m_pSingleStream->GetData();
-          m_Size = m_pSingleStream->GetSize();
-        }
-        m_InternalStage = STAGE_PARSE;
-        m_CurrentOffset = 0;
-      } else {
-        CPDF_Array* pContent =
-            m_pObjectHolder->m_pFormDict->GetArrayFor("Contents");
-        m_StreamArray[m_CurrentOffset].reset(new CPDF_StreamAcc);
-        CPDF_Stream* pStreamObj = ToStream(
-            pContent ? pContent->GetDirectObjectAt(m_CurrentOffset) : nullptr);
-        m_StreamArray[m_CurrentOffset]->LoadAllData(pStreamObj, FALSE);
-        m_CurrentOffset++;
-      }
-    }
-    if (m_InternalStage == STAGE_PARSE) {
-      if (!m_pParser) {
-        m_pParser.reset(new CPDF_StreamContentParser(
-            m_pObjectHolder->m_pDocument, m_pObjectHolder->m_pPageResources,
-            nullptr, nullptr, m_pObjectHolder, m_pObjectHolder->m_pResources,
-            &m_pObjectHolder->m_BBox, nullptr, 0));
-        m_pParser->GetCurStates()->m_ColorState.SetDefault();
-      }
-      if (m_CurrentOffset >= m_Size) {
-        m_InternalStage = STAGE_CHECKCLIP;
-      } else {
-        m_CurrentOffset +=
-            m_pParser->Parse(m_pData + m_CurrentOffset,
-                             m_Size - m_CurrentOffset, PARSE_STEP_LIMIT);
-      }
-    }
-    if (m_InternalStage == STAGE_CHECKCLIP) {
-      if (m_pType3Char) {
-        m_pType3Char->m_bColored = m_pParser->IsColored();
-        m_pType3Char->m_Width =
-            FXSYS_round(m_pParser->GetType3Data()[0] * 1000);
-        m_pType3Char->m_BBox.left =
-            FXSYS_round(m_pParser->GetType3Data()[2] * 1000);
-        m_pType3Char->m_BBox.bottom =
-            FXSYS_round(m_pParser->GetType3Data()[3] * 1000);
-        m_pType3Char->m_BBox.right =
-            FXSYS_round(m_pParser->GetType3Data()[4] * 1000);
-        m_pType3Char->m_BBox.top =
-            FXSYS_round(m_pParser->GetType3Data()[5] * 1000);
-      }
-      for (auto& pObj : *m_pObjectHolder->GetPageObjectList()) {
-        if (!pObj->m_ClipPath)
-          continue;
-        if (pObj->m_ClipPath.GetPathCount() != 1)
-          continue;
-        if (pObj->m_ClipPath.GetTextCount())
-          continue;
-        CPDF_Path ClipPath = pObj->m_ClipPath.GetPath(0);
-        if (!ClipPath.IsRect() || pObj->IsShading())
-          continue;
-        CFX_FloatRect old_rect(ClipPath.GetPointX(0), ClipPath.GetPointY(0),
-                               ClipPath.GetPointX(2), ClipPath.GetPointY(2));
-        CFX_FloatRect obj_rect(pObj->m_Left, pObj->m_Bottom, pObj->m_Right,
-                               pObj->m_Top);
-        if (old_rect.Contains(obj_rect)) {
-          pObj->m_ClipPath.SetNull();
-        }
-      }
-      m_Status = Done;
-      return;
-    }
-    steps++;
-    if (pPause && pPause->NeedToPauseNow()) {
-      break;
-    }
-  }
-}