private void AddToErrorList()

in vsintegration/src/FSharp.ProjectSystem.Base/Project/IDEBuildLogger.cs [240:330]
78 lines of code
20 McCabe index (conditional complexity)

		private void AddToErrorList(
			BuildEventArgs errorEvent,
            string subcategory,
			string errorCode,
			string file,
			int startLine,
			int startColumn,
            int endLine,
            int endColumn)
		{
            if (file == null)
                file = String.Empty;
            
            bool isWarning = errorEvent is BuildWarningEventArgs;
            Shell.TaskPriority priority = isWarning ? Shell.TaskPriority.Normal : Shell.TaskPriority.High;
            
            TextSpan span;
            span.iStartLine = startLine;
            span.iStartIndex = startColumn;
            span.iEndLine = endLine < startLine ? span.iStartLine : endLine;
            span.iEndIndex = (endColumn < startColumn) && (span.iStartLine == span.iEndLine) ? span.iStartIndex : endColumn;

			if (OutputWindowPane != null
				&& (this.Verbosity != LoggerVerbosity.Quiet || errorEvent is BuildErrorEventArgs))
			{
				// Format error and output it to the output window
				string message = this.FormatMessage(errorEvent.Message);
                DefaultCompilerError e = new DefaultCompilerError(file,
                                                span.iStartLine,
                                                span.iStartIndex,
                                                span.iEndLine,
                                                span.iEndIndex,
                                                errorCode,
					                            message);
				e.IsWarning = isWarning;

				Output(GetFormattedErrorMessage(e));
			}

            UIThread.Run(delegate()
            {
                IVsUIShellOpenDocument openDoc = serviceProvider.GetService(typeof(IVsUIShellOpenDocument)) as IVsUIShellOpenDocument;
                if (openDoc == null)
                    return;

                IVsWindowFrame frame;
                IOleServiceProvider sp;
                IVsUIHierarchy hier;
                uint itemid;
                Guid logicalView = VSConstants.LOGVIEWID_Code;

                IVsTextLines buffer = null;
                // JAF 
                // Notes about acquiring the buffer:
                // If the file physically exists then this will open the document in the current project. It doesn't matter if the file is a member of the project.
                // Also, it doesn't matter if this is an F# file. For example, an error in Microsoft.Common.targets will cause a file to be opened here.
                // However, opening the document does not mean it will be shown in VS. 
                if (!Microsoft.VisualStudio.ErrorHandler.Failed(openDoc.OpenDocumentViaProject(file, ref logicalView, out sp, out hier, out itemid, out frame)) && frame != null) {
                    object docData;
                    frame.GetProperty((int)__VSFPROPID.VSFPROPID_DocData, out docData);

                    // Get the text lines
                    buffer = docData as IVsTextLines;

                    if (buffer == null) {
                        IVsTextBufferProvider bufferProvider = docData as IVsTextBufferProvider;
                        if (bufferProvider != null) {
                            bufferProvider.GetTextBuffer(out buffer);
                        }
                    }
                }

                // Need to adjust line and column indexing for the task window, which assumes zero-based values
                if (span.iStartLine > 0 && span.iStartIndex > 0)
                {
                    span.iStartLine -= 1;
                    span.iEndLine -= 1;
                    span.iStartIndex -= 1;
                    span.iEndIndex -= 1;
                }

                // Add error to task list
                var taskText = Microsoft.FSharp.Compiler.ErrorLogger.NewlineifyErrorString(errorEvent.Message);

                if (errorReporter != null)
                {
                    errorReporter.ReportError2(taskText, errorCode, (VSTASKPRIORITY) priority, span.iStartLine, span.iStartIndex, span.iEndLine, span.iEndIndex, file);
                }

            });
		}