Use smart pointers for class owned pointers in xfa/fxbarcode

xfa/fxbarcode/common/reedsolomon/BC_ReedSolomonGF256.cpp

 // 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
 // Original code is licensed as follows:
 /*
  * Copyright 2007 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/common/reedsolomon/BC_ReedSolomonGF256.h"
 #include "xfa/fxbarcode/common/reedsolomon/BC_ReedSolomonGF256Poly.h"
 
-CBC_ReedSolomonGF256* CBC_ReedSolomonGF256::QRCodeFild = nullptr;
+CBC_ReedSolomonGF256* CBC_ReedSolomonGF256::QRCodeField = nullptr;
 CBC_ReedSolomonGF256* CBC_ReedSolomonGF256::DataMatrixField = nullptr;
+
 void CBC_ReedSolomonGF256::Initialize() {
-  QRCodeFild = new CBC_ReedSolomonGF256(0x011D);
-  QRCodeFild->Init();
+  QRCodeField = new CBC_ReedSolomonGF256(0x011D);
+  QRCodeField->Init();
   DataMatrixField = new CBC_ReedSolomonGF256(0x012D);
   DataMatrixField->Init();
 }
 
 void CBC_ReedSolomonGF256::Finalize() {
-  delete QRCodeFild;
-  QRCodeFild = nullptr;
+  delete QRCodeField;
+  QRCodeField = nullptr;
   delete DataMatrixField;
   DataMatrixField = nullptr;
 }
 
 CBC_ReedSolomonGF256::CBC_ReedSolomonGF256(int32_t primitive) {
   int32_t x = 1;
   for (int32_t j = 0; j < 256; j++) {
     m_expTable[j] = x;
     x <<= 1;
     if (x >= 0x100) {
       x ^= primitive;
     }
   }
   for (int32_t i = 0; i < 255; i++) {
     m_logTable[m_expTable[i]] = i;
   }
   m_logTable[0] = 0;
 }
+
 void CBC_ReedSolomonGF256::Init() {
-  m_zero = new CBC_ReedSolomonGF256Poly(this, 0);
-  m_one = new CBC_ReedSolomonGF256Poly(this, 1);
+  m_zero.reset(new CBC_ReedSolomonGF256Poly(this, 0));
+  m_one.reset(new CBC_ReedSolomonGF256Poly(this, 1));
 }
-CBC_ReedSolomonGF256::~CBC_ReedSolomonGF256() {
-  delete m_zero;
-  delete m_one;
+
+CBC_ReedSolomonGF256::~CBC_ReedSolomonGF256() {}
+
+CBC_ReedSolomonGF256Poly* CBC_ReedSolomonGF256::GetZero() const {
+  return m_zero.get();
 }
-CBC_ReedSolomonGF256Poly* CBC_ReedSolomonGF256::GetZero() {
-  return m_zero;
+
+CBC_ReedSolomonGF256Poly* CBC_ReedSolomonGF256::GetOne() const {
+  return m_one.get();
 }
-CBC_ReedSolomonGF256Poly* CBC_ReedSolomonGF256::GetOne() {
-  return m_one;
-}
+
 CBC_ReedSolomonGF256Poly* CBC_ReedSolomonGF256::BuildMonomial(
     int32_t degree,
     int32_t coefficient,
     int32_t& e) {
   if (degree < 0) {
     e = BCExceptionDegreeIsNegative;
     BC_EXCEPTION_CHECK_ReturnValue(e, nullptr);
   }
   if (coefficient == 0) {
     CBC_ReedSolomonGF256Poly* temp = m_zero->Clone(e);
     BC_EXCEPTION_CHECK_ReturnValue(e, nullptr);
     return temp;
   }
   CFX_Int32Array coefficients;
   coefficients.SetSize(degree + 1);
   coefficients[0] = coefficient;
   CBC_ReedSolomonGF256Poly* temp = new CBC_ReedSolomonGF256Poly();
   temp->Init(this, &coefficients, e);
   BC_EXCEPTION_CHECK_ReturnValue(e, nullptr);
   return temp;
 }
+
 int32_t CBC_ReedSolomonGF256::AddOrSubtract(int32_t a, int32_t b) {
   return a ^ b;
 }
+
 int32_t CBC_ReedSolomonGF256::Exp(int32_t a) {
   return m_expTable[a];
 }
+
 int32_t CBC_ReedSolomonGF256::Log(int32_t a, int32_t& e) {
   if (a == 0) {
     e = BCExceptionAIsZero;
     BC_EXCEPTION_CHECK_ReturnValue(e, 0);
   }
   return m_logTable[a];
 }
+
 int32_t CBC_ReedSolomonGF256::Inverse(int32_t a, int32_t& e) {
   if (a == 0) {
     e = BCExceptionAIsZero;
     BC_EXCEPTION_CHECK_ReturnValue(e, 0);
   }
   return m_expTable[255 - m_logTable[a]];
 }
+
 int32_t CBC_ReedSolomonGF256::Multiply(int32_t a, int32_t b) {
   if (a == 0 || b == 0) {
     return 0;
   }
   if (a == 1) {
     return b;
   }
   if (b == 1) {
     return a;
   }
   return m_expTable[(m_logTable[a] + m_logTable[b]) % 255];
 }