internal void ParseDocument()

in src/Microsoft.OpenApi.Workbench/MainModel.cs [183:244]
52 lines of code
5 McCabe index (conditional complexity)

        internal void ParseDocument()
        {
            try
            {
                Stream stream;
                if (!String.IsNullOrWhiteSpace(_inputFile))
                {
                    stream = new FileStream(_inputFile, FileMode.Open);
                }
                else
                {
                    stream = CreateStream(_input);
                }


                var stopwatch = new Stopwatch();
                stopwatch.Start();

                var document = new OpenApiStreamReader(new OpenApiReaderSettings
                {
                    ReferenceResolution = ReferenceResolutionSetting.ResolveLocalReferences,
                    RuleSet = ValidationRuleSet.GetDefaultRuleSet()
                }
                ).Read(stream, out var context);
                stopwatch.Stop();
                ParseTime = $"{stopwatch.ElapsedMilliseconds} ms";

                if (context.Errors.Count == 0)
                {
                    Errors = "OK";
                }
                else
                {
                    var errorReport = new StringBuilder();

                    foreach (var error in context.Errors)
                    {
                        errorReport.AppendLine(error.ToString());
                    }

                    Errors = errorReport.ToString();
                }

                stopwatch.Reset();
                stopwatch.Start();
                Output = WriteContents(document);
                stopwatch.Stop();

                RenderTime = $"{stopwatch.ElapsedMilliseconds} ms";

                var statsVisitor = new StatsVisitor();
                var walker = new OpenApiWalker(statsVisitor);
                walker.Walk(document);

                Errors += Environment.NewLine + "Statistics:" + Environment.NewLine + statsVisitor.GetStatisticsReport();
            }
            catch (Exception ex)
            {
                Output = string.Empty;
                Errors = "Failed to parse input: " + ex.Message;
            }
        }