Merge pull request #40888 from sharwell/compile-stats

Add /compilerStats option for AnalyzerRunner

src/Tools/AnalyzerRunner/Options.cs

@@ -19,6 +19,7 @@ internal sealed class Options
         public readonly bool ReportSuppressedDiagnostics;
         public readonly bool ApplyChanges;
         public readonly bool ShowStats;
+        public readonly bool ShowCompilerDiagnostics;
         public readonly bool UseAll;
         public readonly int Iterations;
         public readonly bool TestDocuments;
@@ -41,6 +42,7 @@ internal sealed class Options
             bool reportSuppressedDiagnostics,
             bool applyChanges,
             bool showStats,
+            bool showCompilerDiagnostics,
             bool useAll,
             int iterations,
             bool testDocuments,
@@ -60,6 +62,7 @@ internal sealed class Options
             ReportSuppressedDiagnostics = reportSuppressedDiagnostics;
             ApplyChanges = applyChanges;
             ShowStats = showStats;
+            ShowCompilerDiagnostics = showCompilerDiagnostics;
             UseAll = useAll;
             Iterations = iterations;
             TestDocuments = testDocuments;
@@ -82,6 +85,7 @@ internal static Options Create(string[] args)
             bool reportSuppressedDiagnostics = false;
             bool applyChanges = false;
             bool showStats = false;
+            bool showCompilerDiagnostics = false;
             bool useAll = false;
             int iterations = 1;
             bool testDocuments = false;
@@ -107,6 +111,9 @@ internal static Options Create(string[] args)
                     case "/stats":
                         showStats = true;
                         break;
+                    case "/compilerStats":
+                        showCompilerDiagnostics = true;
+                        break;
                     case "/concurrent":
                         runConcurrent = true;
                         break;
@@ -189,6 +196,7 @@ internal static Options Create(string[] args)
                 reportSuppressedDiagnostics: reportSuppressedDiagnostics,
                 applyChanges: applyChanges,
                 showStats: showStats,
+                showCompilerDiagnostics: showCompilerDiagnostics,
                 useAll: useAll,
                 iterations: iterations,
                 testDocuments: testDocuments,

src/Tools/AnalyzerRunner/Program.cs

@@ -106,6 +106,37 @@ public static async Task Main(string[] args)
                     Console.WriteLine("Number of syntax trivia:\t" + statistics.NumberOfTrivia);
                 }
 
+                if (options.ShowCompilerDiagnostics)
+                {
+                    var projects = solution.Projects.Where(project => project.Language == LanguageNames.CSharp || project.Language == LanguageNames.VisualBasic).ToList();
+
+                    var diagnosticStatistics = new Dictionary<string, (string description, DiagnosticSeverity severity, int count)>();
+                    foreach (var project in projects)
+                    {
+                        var compilation = await project.GetCompilationAsync(cancellationToken).ConfigureAwait(false);
+                        foreach (var diagnostic in compilation.GetDiagnostics(cancellationToken))
+                        {
+                            diagnosticStatistics.TryGetValue(diagnostic.Id, out var existing);
+                            var description = existing.description;
+                            if (string.IsNullOrEmpty(description))
+                            {
+                                description = diagnostic.Descriptor?.Title.ToString();
+                                if (string.IsNullOrEmpty(description))
+                                {
+                                    description = diagnostic.Descriptor?.MessageFormat.ToString();
+                                }
+                            }
+
+                            diagnosticStatistics[diagnostic.Id] = (description, diagnostic.Descriptor.DefaultSeverity, existing.count + 1);
+                        }
+                    }
+
+                    foreach (var pair in diagnosticStatistics)
+                    {
+                        Console.WriteLine($"  {pair.Value.severity} {pair.Key}: {pair.Value.count} instances ({pair.Value.description})");
+                    }
+                }
+
                 Console.WriteLine("Pausing 5 seconds before starting analysis...");
                 await Task.Delay(TimeSpan.FromSeconds(5)).ConfigureAwait(false);
 

src/Tools/AnalyzerRunner/Properties/launchSettings.json

@@ -2,7 +2,7 @@
   "profiles": {
     "IDE Analyzers": {
       "commandName": "Project",
-      "commandLineArgs": "$(OutDir) $(SolutionDir)Roslyn.sln /concurrent /stats"
+      "commandLineArgs": "$(OutDir) $(SolutionDir)Roslyn.sln /concurrent /stats /compilerStats"
     },
     "CSharpEditorFeatures Analyzers": {
       "commandName": "Project",