static Microsoft.CodeAnalysis.Text.TextChange ToCodeAnalysisTextChange(ITextDocument editor, TextEdit edit) { var segment = editor.GetTextSegment(edit.Range); if (segment.IsInvalid) { throw new ArgumentException(string.Format("Invalid TextEdit.Range.")); } return(new Microsoft.CodeAnalysis.Text.TextChange( new Microsoft.CodeAnalysis.Text.TextSpan(segment.Offset, segment.Length), edit.NewText )); }