AvalonStudio.TextEditor.Document.LineManager.Rebuild C# (CSharp) Method

		public void Rebuild()
		{
			// keep the first document line
			var ls = documentLineTree.GetByNumber(1);
			// but mark all other lines as deleted, and detach them from the other nodes
			for (var line = ls.NextLine; line != null; line = line.NextLine)
			{
				line.isDeleted = true;
				line.parent = line.left = line.right = null;
			}
			// Reset the first line to detach it from the deleted lines
			ls.ResetLine();
			var ds = NewLineFinder.NextNewLine(document, 0);
			var lines = new List<DocumentLine>();
			var lastDelimiterEnd = 0;
			while (ds != SimpleSegment.Invalid)
			{
				ls.TotalLength = ds.Offset + ds.Length - lastDelimiterEnd;
				ls.DelimiterLength = ds.Length;
				lastDelimiterEnd = ds.Offset + ds.Length;
				lines.Add(ls);

				ls = new DocumentLine(document);
				ds = NewLineFinder.NextNewLine(document, lastDelimiterEnd);
			}
			ls.TotalLength = document.TextLength - lastDelimiterEnd;
			lines.Add(ls);
			documentLineTree.RebuildTree(lines);
			foreach (var lineTracker in lineTrackers)
				lineTracker.RebuildDocument();
		}

        private void DoReplace(int offset, int length, ITextSource newText, OffsetChangeMap offsetChangeMap)
        {
            if (length == 0 && newText.TextLength == 0)
            {
                return;
            }

            // trying to replace a single character in 'Normal' mode?
            // for single characters, 'CharacterReplace' mode is equivalent, but more performant
            // (we don't have to touch the anchorTree at all in 'CharacterReplace' mode)
            if (length == 1 && newText.TextLength == 1 && offsetChangeMap == null)
            {
                offsetChangeMap = OffsetChangeMap.Empty;
            }

            ITextSource removedText;

            if (length == 0)
            {
                removedText = StringTextSource.Empty;
            }
            else if (length < 100)
            {
                removedText = new StringTextSource(rope.ToString(offset, length));
            }
            else
            {
                // use a rope if the removed string is long
                removedText = new RopeTextSource(rope.GetRange(offset, length));
            }
            var args = new DocumentChangeEventArgs(offset, removedText, newText, offsetChangeMap);

            // fire DocumentChanging event
            if (Changing != null)
            {
                Changing(this, args);
            }
            if (textChanging != null)
            {
                textChanging(this, args);
            }

            undoStack.Push(this, args);

            cachedText      = null; // reset cache of complete document text
            fireTextChanged = true;
            var delayedEvents = new DelayedEvents();

            lock (lockObject)
            {
                // create linked list of checkpoints
                versionProvider.AppendChange(args);

                // now update the textBuffer and lineTree
                if (offset == 0 && length == rope.Length)
                {
                    // optimize replacing the whole document
                    rope.Clear();
                    var newRopeTextSource = newText as RopeTextSource;
                    if (newRopeTextSource != null)
                    {
                        rope.InsertRange(0, newRopeTextSource.GetRope());
                    }
                    else
                    {
                        rope.InsertText(0, newText.Text);
                    }
                    lineManager.Rebuild();
                }
                else
                {
                    rope.RemoveRange(offset, length);
                    lineManager.Remove(offset, length);
#if DEBUG
                    lineTree.CheckProperties();
#endif
                    var newRopeTextSource = newText as RopeTextSource;
                    if (newRopeTextSource != null)
                    {
                        rope.InsertRange(offset, newRopeTextSource.GetRope());
                    }
                    else
                    {
                        rope.InsertText(offset, newText.Text);
                    }
                    lineManager.Insert(offset, newText);
#if DEBUG
                    lineTree.CheckProperties();
#endif
                }
            }

            // update text anchors
            if (offsetChangeMap == null)
            {
                anchorTree.HandleTextChange(args.CreateSingleChangeMapEntry(), delayedEvents);
            }
            else
            {
                foreach (var entry in offsetChangeMap)
                {
                    anchorTree.HandleTextChange(entry, delayedEvents);
                }
            }

            lineManager.ChangeComplete(args);

            // raise delayed events after our data structures are consistent again
            delayedEvents.RaiseEvents();

            // fire DocumentChanged event
            if (Changed != null)
            {
                Changed(this, args);
            }
            if (textChanged != null)
            {
                textChanged(this, args);
            }
        }