File indexing completed on 2025-04-27 05:15:29

 // clang-format off
 /*
  *  This file is part of KDiff3.
  *
  * SPDX-FileCopyrightText: 2002-2011 Joachim Eibl, joachim.eibl at gmx.de
  * SPDX-FileCopyrightText: 2018-2020 Michael Reeves reeves.87@gmail.com
  * SPDX-License-Identifier: GPL-2.0-or-later
 */
 // clang-format on
 
 #include "merger.h"
 
 #include <list>
 #include <memory>
 
 Merger::Merger(const std::shared_ptr<const DiffList>& pDiffList1, const std::shared_ptr<const DiffList>& pDiffList2):
     md1(pDiffList1, 0), md2(pDiffList2, 1)
 {
 }
 
 Merger::MergeData::MergeData(const std::shared_ptr<const DiffList>& p, qint32 i)
 {
     idx = i;
     pDiffList = p;
     if(p != nullptr)
     {
         it = p->begin();
         update();
     }
 }
 
 bool Merger::MergeData::eq() const
 {
     return pDiffList == nullptr || d.numberOfEquals() > 0;
 }
 
 bool Merger::MergeData::isEnd() const
 {
     return (pDiffList == nullptr || (it == pDiffList->end() && d.numberOfEquals() == 0 &&
                                      (idx == 0 ? d.diff1() == 0 : d.diff2() == 0)));
 }
 
 void Merger::MergeData::update()
 {
     if(d.numberOfEquals() > 0)
         d.adjustNumberOfEquals(-1);
     else if(idx == 0 && d.diff1() > 0)
         d.adjustDiff1(-1);
     else if(idx == 1 && d.diff2() > 0)
         d.adjustDiff2(-1);
 
     while(d.numberOfEquals() == 0 && ((idx == 0 && d.diff1() == 0) || (idx == 1 && d.diff2() == 0)) && pDiffList != nullptr && it != pDiffList->end())
     {
         d = *it;
         ++it;
     }
 }
 
 void Merger::next()
 {
     md1.update();
     md2.update();
 }
 
 ChangeFlags Merger::whatChanged()
 {
     ChangeFlags changed = ChangeFlag::NoChange;
     changed |= md1.eq() ? ChangeFlag::NoChange : ChangeFlag::AChanged;
     changed |= md2.eq() ? ChangeFlag::NoChange : ChangeFlag::BChanged;
     return changed;
 }
 
 bool Merger::isEndReached()
 {
     return md1.isEnd() && md2.isEnd();
 }