/// <summary>
/// Builds the diff pieces.
/// </summary>
/// <param name="diffResult">Diff result.</param>
/// <param name="firstPieces">First pieces.</param>
/// <param name="secondPieces">Second pieces.</param>
/// <param name="subPieceBuilder">Sub piece builder.</param>
private static void BuildDiffPieces(Result diffResult, List <LineModel> firstPieces, List <LineModel> secondPieces, PieceBuilder subPieceBuilder)
{
int aPos = 0;
int bPos = 0;
foreach (var diffBlock in diffResult.DiffBlocks)
{
while (bPos < diffBlock.InsertStartB && aPos < diffBlock.DeleteStartA)
{
firstPieces.Add(new LineModel(diffResult.PiecesFirst[aPos], ChangeType.Unchanged, aPos + 1));
secondPieces.Add(new LineModel(diffResult.PiecesSecond[bPos], ChangeType.Unchanged, bPos + 1));
aPos++;
bPos++;
}
int i = 0;
for (; i < Math.Min(diffBlock.DeleteCountA, diffBlock.InsertCountB); i++)
{
var oldPiece = new LineModel(diffResult.PiecesFirst[i + diffBlock.DeleteStartA], ChangeType.Deleted, aPos + 1);
var newPiece = new LineModel(diffResult.PiecesSecond[i + diffBlock.InsertStartB], ChangeType.Inserted, bPos + 1);
if (subPieceBuilder != null)
{
subPieceBuilder(diffResult.PiecesFirst[aPos], diffResult.PiecesSecond[bPos], oldPiece.SubPieces, newPiece.SubPieces);
newPiece.Type = oldPiece.Type = ChangeType.Modified;
}
firstPieces.Add(oldPiece);
secondPieces.Add(newPiece);
aPos++;
bPos++;
}
if (diffBlock.DeleteCountA > diffBlock.InsertCountB)
{
for (; i < diffBlock.DeleteCountA; i++)
{
firstPieces.Add(new LineModel(diffResult.PiecesFirst[i + diffBlock.DeleteStartA], ChangeType.Deleted, aPos + 1));
secondPieces.Add(new LineModel());
aPos++;
}
}
else
{
for (; i < diffBlock.InsertCountB; i++)
{
secondPieces.Add(new LineModel(diffResult.PiecesSecond[i + diffBlock.InsertStartB], ChangeType.Inserted, bPos + 1));
firstPieces.Add(new LineModel());
bPos++;
}
}
}
while (bPos < diffResult.PiecesSecond.Length && aPos < diffResult.PiecesFirst.Length)
{
firstPieces.Add(new LineModel(diffResult.PiecesFirst[aPos], ChangeType.Unchanged, aPos + 1));
secondPieces.Add(new LineModel(diffResult.PiecesSecond[bPos], ChangeType.Unchanged, bPos + 1));
aPos++;
bPos++;
}
}
