File indexing completed on 2024-12-08 11:06:05

 // clang-format off
 /*
  * KDiff3 - Text Diff And Merge Tool
  *
  * 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
 
 #ifndef MERGEEDITLINE_H
 #define MERGEEDITLINE_H
 
 #include "diff.h"
 #include "LineRef.h"
 
 #include <memory>
 
 #include <QString>
 
 using MergeEditLineList = std::list<class MergeEditLine>;
 
 class MergeEditLine
 {
   public:
     explicit MergeEditLine(const Diff3LineList::const_iterator& i, e_SrcSelector src = e_SrcSelector::None)
     {
         m_id3l = i;
         mSrc = src;
         mLineRemoved = false;
         mChanged = false;
     }
 
     void setConflict()
     {
         mSrc = e_SrcSelector::None;
         mLineRemoved = false;
         mChanged = false;
         mStr = QString();
     }
     [[nodiscard]] inline bool isConflict() const { return mSrc == e_SrcSelector::None && !mLineRemoved && !mChanged; }
 
     void setRemoved(e_SrcSelector src = e_SrcSelector::None)
     {
         mSrc = src;
         mLineRemoved = true;
         mStr = QString();
         mChanged = (src == e_SrcSelector::None);
     }
     [[nodiscard]] inline bool isRemoved() const { return mLineRemoved; }
 
     [[nodiscard]] inline bool isEditableText() const { return !isConflict(); }
 
     void setString(const QString& s)
     {
         mStr = s;
         mLineRemoved = false;
         mSrc = e_SrcSelector::None;
         mChanged = true;
     }
     [[nodiscard]] QString getString(const std::shared_ptr<const LineDataVector>& pLineDataA, const std::shared_ptr<const LineDataVector>& pLineDataB, const std::shared_ptr<const LineDataVector>& pLineDataC) const;
     [[nodiscard]] inline bool isModified() const { return mChanged; }
 
     void setSource(e_SrcSelector src, bool bLineRemoved)
     {
         mSrc = src;
         mLineRemoved = bLineRemoved;
         if(bLineRemoved && mSrc == e_SrcSelector::None)
             mChanged = true;
         else if(mSrc != e_SrcSelector::None)
         {
             mChanged = false;
             mStr = u8"";
         }
     }
 
     [[nodiscard]] inline e_SrcSelector src() const { return mSrc; }
     [[nodiscard]] inline Diff3LineList::const_iterator id3l() const { return m_id3l; }
 
   private:
     Diff3LineList::const_iterator m_id3l;
     e_SrcSelector mSrc; // 1, 2 or 3 for A, B or C respectively, or 0 when line is from neither source.
     QString mStr;       // String when modified by user or null-string when orig data is used.
     bool mLineRemoved;
     bool mChanged;
 };
 
 class MergeBlock
 {
   private:
     friend class MergeBlockList;
 
     Diff3LineList::const_iterator mId3l;
     LineType d3lLineIdx = -1;    // Needed to show the correct window pos.
     LineType srcRangeLength = 0; // how many src-lines have these properties
     e_MergeDetails mergeDetails = e_MergeDetails::eDefault;
     bool bConflict = false;
     bool bWhiteSpaceConflict = false;
     bool bDelta = false;
     e_SrcSelector srcSelect = e_SrcSelector::None;
     MergeEditLineList mMergeEditLineList;
 
   public:
     [[nodiscard]] inline const MergeEditLineList& list() const { return mMergeEditLineList; }
     [[nodiscard]] inline MergeEditLineList& list() { return mMergeEditLineList; }
 
     [[nodiscard]] inline e_SrcSelector source() const { return srcSelect; }
 
     [[nodiscard]] inline LineType getIndex() const { return d3lLineIdx; }
     [[nodiscard]] inline LineType sourceRangeLength() const { return srcRangeLength; }
 
     [[nodiscard]] inline bool isConflict() const { return bConflict; }
     [[nodiscard]] inline bool isWhiteSpaceConflict() const { return bWhiteSpaceConflict; }
     [[nodiscard]] inline bool isDelta() const { return bDelta; }
     [[nodiscard]] inline bool hasModfiedText()
     {
         return std::any_of(list().cbegin(), list().cend(), [](const MergeEditLine& mel) { return mel.isModified(); });
     }
 
     [[nodiscard]] inline Diff3LineList::const_iterator id3l() const { return mId3l; }
 
     [[nodiscard]] inline e_MergeDetails details() const { return mergeDetails; }
 
     [[nodiscard]] inline LineType lineCount() const { return SafeInt<qint32>(list().size()); }
 
     void split(MergeBlock& mb2, LineType d3lLineIdx2) // The caller must insert the mb2 after this mb in the m_mergeLineList
     {
         if(d3lLineIdx2 < d3lLineIdx || d3lLineIdx2 >= d3lLineIdx + srcRangeLength)
         {
             assert(false);
             return; //Error
         }
         mb2.mergeDetails = mergeDetails;
         mb2.bConflict = bConflict;
         mb2.bWhiteSpaceConflict = bWhiteSpaceConflict;
         mb2.bDelta = bDelta;
         mb2.srcSelect = srcSelect;
 
         mb2.d3lLineIdx = d3lLineIdx2;
         mb2.srcRangeLength = srcRangeLength - (d3lLineIdx2 - d3lLineIdx);
         srcRangeLength = d3lLineIdx2 - d3lLineIdx; // current MergeBlock controls fewer lines
         mb2.mId3l = mId3l;
         for(LineType i = 0; i < srcRangeLength; ++i)
             ++mb2.mId3l;
 
         mb2.mMergeEditLineList.clear();
         // Search for best place to splice
         for(MergeEditLineList::iterator i = mMergeEditLineList.begin(); i != mMergeEditLineList.end(); ++i)
         {
             if(i->id3l() == mb2.mId3l)
             {
                 mb2.mMergeEditLineList.splice(mb2.mMergeEditLineList.begin(), mMergeEditLineList, i, mMergeEditLineList.end());
                 return;
             }
         }
         mb2.mMergeEditLineList.push_back(MergeEditLine(mb2.mId3l));
     }
 
     void join(MergeBlock& mb2) // The caller must remove the ml2 from the m_mergeLineList after this call
     {
         srcRangeLength += mb2.srcRangeLength;
         mb2.mMergeEditLineList.clear();
         mMergeEditLineList.clear();
         mMergeEditLineList.push_back(MergeEditLine(mId3l)); // Create a simple conflict
         if(mb2.bConflict) bConflict = true;
         if(!mb2.bWhiteSpaceConflict) bWhiteSpaceConflict = false;
         if(mb2.bDelta) bDelta = true;
     }
 
     bool isSameKind(const MergeBlock& mb2) const;
 
     void mergeOneLine(const Diff3Line& diffRec, bool& bLineRemoved, bool bTwoInputs);
     void dectectWhiteSpaceConflict(const Diff3Line& d, const bool isThreeWay);
 
     void removeEmptySource();
 };
 
 class MergeBlockList: public std::list<MergeBlock>
 {
   public:
     using std::list<MergeBlock>::list;
 
     void buildFromDiff3(const Diff3LineList& diff3List, bool isThreeway);
     void updateDefaults(const e_SrcSelector defaultSelector, const bool bConflictsOnly, const bool bWhiteSpaceOnly);
 
     MergeBlockList::iterator splitAtDiff3LineIdx(qint32 d3lLineIdx);
 };
 
 #endif