Clean up C-Style casts in CBC_CodeBase and subclasses

xfa/fxbarcode/cbc_code39.cpp

 // Copyright 2016 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
 /*
  * Copyright 2011 ZXing authors
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
  * You may obtain a copy of the License at
  *
  *      http://www.apache.org/licenses/LICENSE-2.0
  *
  * Unless required by applicable law or agreed to in writing, software
  * distributed under the License is distributed on an "AS IS" BASIS,
  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
 
 #include "xfa/fxbarcode/cbc_code39.h"
 
 #include "xfa/fxbarcode/BC_BinaryBitmap.h"
 #include "xfa/fxbarcode/BC_BufferedImageLuminanceSource.h"
 #include "xfa/fxbarcode/common/BC_GlobalHistogramBinarizer.h"
 #include "xfa/fxbarcode/oned/BC_OnedCode39Reader.h"
 #include "xfa/fxbarcode/oned/BC_OnedCode39Writer.h"
 
-CBC_Code39::CBC_Code39() {
-  m_pBCReader = (CBC_Reader*)new (CBC_OnedCode39Reader);
-  m_pBCWriter = (CBC_Writer*)new (CBC_OnedCode39Writer);
-}
+CBC_Code39::CBC_Code39()
+    : CBC_OneCode(new CBC_OnedCode39Reader, new CBC_OnedCode39Writer) {}
 
-CBC_Code39::CBC_Code39(FX_BOOL usingCheckDigit) {
-  m_pBCReader = (CBC_Reader*)new CBC_OnedCode39Reader(usingCheckDigit);
-  m_pBCWriter = (CBC_Writer*)new CBC_OnedCode39Writer;
-}
+CBC_Code39::CBC_Code39(FX_BOOL usingCheckDigit)
+    : CBC_OneCode(new CBC_OnedCode39Reader(usingCheckDigit),
+                  new CBC_OnedCode39Writer) {}
 
-CBC_Code39::CBC_Code39(FX_BOOL usingCheckDigit, FX_BOOL extendedMode) {
-  m_pBCReader =
-      (CBC_Reader*)new CBC_OnedCode39Reader(usingCheckDigit, extendedMode);
-  m_pBCWriter = (CBC_Writer*)new CBC_OnedCode39Writer(extendedMode);
-}
+CBC_Code39::CBC_Code39(FX_BOOL usingCheckDigit, FX_BOOL extendedMode)
+    : CBC_OneCode(new CBC_OnedCode39Reader(usingCheckDigit, extendedMode),
+                  new CBC_OnedCode39Writer(extendedMode)) {}
 
-CBC_Code39::~CBC_Code39() {
-  delete (m_pBCReader);
-  delete (m_pBCWriter);
-}
+CBC_Code39::~CBC_Code39() {}
 
 FX_BOOL CBC_Code39::Encode(const CFX_WideStringC& contents,
                            FX_BOOL isDevice,
                            int32_t& e) {
   if (contents.IsEmpty()) {
     e = BCExceptionNoContents;
     return FALSE;
   }
   BCFORMAT format = BCFORMAT_CODE_39;
   int32_t outWidth = 0;
   int32_t outHeight = 0;
   CFX_WideString filtercontents =
-      ((CBC_OnedCode39Writer*)m_pBCWriter)->FilterContents(contents);
+      static_cast<CBC_OnedCode39Writer*>(m_pBCWriter.get())
+          ->FilterContents(contents);
   CFX_WideString renderContents =
-      ((CBC_OnedCode39Writer*)m_pBCWriter)->RenderTextContents(contents);
+      static_cast<CBC_OnedCode39Writer*>(m_pBCWriter.get())
+          ->RenderTextContents(contents);
   m_renderContents = renderContents;
   CFX_ByteString byteString = filtercontents.UTF8Encode();
-  uint8_t* data = static_cast<CBC_OnedCode39Writer*>(m_pBCWriter)
+  uint8_t* data = static_cast<CBC_OnedCode39Writer*>(m_pBCWriter.get())
                       ->Encode(byteString, format, outWidth, outHeight, e);
   BC_EXCEPTION_CHECK_ReturnValue(e, FALSE);
-  ((CBC_OneDimWriter*)m_pBCWriter)
+  static_cast<CBC_OneDimWriter*>(m_pBCWriter.get())
       ->RenderResult(renderContents.AsStringC(), data, outWidth, isDevice, e);
   FX_Free(data);
   BC_EXCEPTION_CHECK_ReturnValue(e, FALSE);
   return TRUE;
 }
 
 FX_BOOL CBC_Code39::RenderDevice(CFX_RenderDevice* device,
                                  const CFX_Matrix* matrix,
                                  int32_t& e) {
   CFX_WideString renderCon =
-      ((CBC_OnedCode39Writer*)m_pBCWriter)
+      static_cast<CBC_OnedCode39Writer*>(m_pBCWriter.get())
           ->encodedContents(m_renderContents.AsStringC(), e);
-  ((CBC_OneDimWriter*)m_pBCWriter)
+  static_cast<CBC_OneDimWriter*>(m_pBCWriter.get())
       ->RenderDeviceResult(device, matrix, renderCon.AsStringC(), e);
   BC_EXCEPTION_CHECK_ReturnValue(e, FALSE);
   return TRUE;
 }
 
 FX_BOOL CBC_Code39::RenderBitmap(CFX_DIBitmap*& pOutBitmap, int32_t& e) {
   CFX_WideString renderCon =
-      ((CBC_OnedCode39Writer*)m_pBCWriter)
+      static_cast<CBC_OnedCode39Writer*>(m_pBCWriter.get())
           ->encodedContents(m_renderContents.AsStringC(), e);
-  ((CBC_OneDimWriter*)m_pBCWriter)
+  static_cast<CBC_OneDimWriter*>(m_pBCWriter.get())
       ->RenderBitmapResult(pOutBitmap, renderCon.AsStringC(), e);
   BC_EXCEPTION_CHECK_ReturnValue(e, FALSE);
   return TRUE;
 }
 
 CFX_WideString CBC_Code39::Decode(uint8_t* buf,
                                   int32_t width,
                                   int32_t height,
                                   int32_t& e) {
   CFX_WideString str;
   return str;
 }
 
 CFX_WideString CBC_Code39::Decode(CFX_DIBitmap* pBitmap, int32_t& e) {
   CBC_BufferedImageLuminanceSource source(pBitmap);
   CBC_GlobalHistogramBinarizer binarizer(&source);
   CBC_BinaryBitmap bitmap(&binarizer);
   CFX_ByteString str = m_pBCReader->Decode(&bitmap, 0, e);
   BC_EXCEPTION_CHECK_ReturnValue(e, CFX_WideString());
   return CFX_WideString::FromUTF8(str.AsStringC());
 }
 
 FX_BOOL CBC_Code39::SetTextLocation(BC_TEXT_LOC location) {
   if (m_pBCWriter)
-    return ((CBC_OnedCode39Writer*)m_pBCWriter)->SetTextLocation(location);
+    return static_cast<CBC_OnedCode39Writer*>(m_pBCWriter.get())
+        ->SetTextLocation(location);
   return FALSE;
 }
 
 FX_BOOL CBC_Code39::SetWideNarrowRatio(int32_t ratio) {
   if (m_pBCWriter)
-    return ((CBC_OnedCode39Writer*)m_pBCWriter)->SetWideNarrowRatio(ratio);
+    return static_cast<CBC_OnedCode39Writer*>(m_pBCWriter.get())
+        ->SetWideNarrowRatio(ratio);
   return FALSE;
 }