Add linting to PSES, with fixes for obvious cases

.editorconfig

@@ -21,6 +21,3 @@ trim_trailing_whitespace = true
 
 [*.{ps1xml,props,xml,yaml}]
 indent_size = 2
-
-# CA1303: Do not pass literals as localized parameters
-dotnet_diagnostic.CA1303.severity = none

PowerShellEditorServices.build.ps1

@@ -186,13 +186,15 @@ task CreateBuildInfo -Before Build {
     [string]$buildTime = [datetime]::Now.ToString("s", [System.Globalization.CultureInfo]::InvariantCulture)
 
     $buildInfoContents = @"
+using System.Globalization;
+
 namespace Microsoft.PowerShell.EditorServices.Hosting
 {
     public static class BuildInfo
     {
         public static readonly string BuildVersion = "$buildVersion";
         public static readonly string BuildOrigin = "$buildOrigin";
-        public static readonly System.DateTime? BuildTime = System.DateTime.Parse("$buildTime");
+        public static readonly System.DateTime? BuildTime = System.DateTime.Parse("$buildTime", CultureInfo.InvariantCulture.DateTimeFormat);
     }
 }
 "@

src/PowerShellEditorServices.Hosting/BuildInfo.cs

@@ -1,9 +1,11 @@
+using System.Globalization;
+
 namespace Microsoft.PowerShell.EditorServices.Hosting
 {
     public static class BuildInfo
     {
         public static readonly string BuildVersion = "<development-build>";
         public static readonly string BuildOrigin = "<development>";
-        public static readonly System.DateTime? BuildTime = System.DateTime.Parse("2019-12-06T21:43:41");
+        public static readonly System.DateTime? BuildTime = System.DateTime.Parse("2019-12-06T21:43:41", CultureInfo.InvariantCulture.DateTimeFormat);
     }
 }

src/PowerShellEditorServices.Hosting/Commands/StartEditorServicesCommand.cs

@@ -12,6 +12,7 @@
 using System.Reflection;
 using SMA = System.Management.Automation;
 using Microsoft.PowerShell.EditorServices.Hosting;
+using System.Globalization;
 
 #if DEBUG
 using System.Diagnostics;
@@ -25,6 +26,7 @@ namespace Microsoft.PowerShell.EditorServices.Commands
     /// <summary>
     /// The Start-EditorServices command, the conventional entrypoint for PowerShell Editor Services.
     /// </summary>
+    [System.Diagnostics.CodeAnalysis.SuppressMessage("Performance", "CA1819:Properties should not return arrays", Justification = "Cmdlet parameters can be arrays")]
     [Cmdlet(VerbsLifecycle.Start, "EditorServices", DefaultParameterSetName = "NamedPipe")]
     public sealed class StartEditorServicesCommand : PSCmdlet
     {
@@ -200,6 +202,7 @@ protected override void BeginProcessing()
             StartLogging();
         }
 
+        [System.Diagnostics.CodeAnalysis.SuppressMessage("Design", "CA1031:Do not catch general exception types", Justification = "Uses ThrowTerminatingError() instead")]
         protected override void EndProcessing()
         {
             _logger.Log(PsesLogLevel.Diagnostic, "Beginning EndProcessing block");
@@ -264,7 +267,7 @@ private void StartLogging()
             if (File.Exists(logPath))
             {
                 int randomInt = new Random().Next();
-                logPath = Path.Combine(logDirPath, $"StartEditorServices-temp{randomInt.ToString("X")}.log");
+                logPath = Path.Combine(logDirPath, $"StartEditorServices-temp{randomInt.ToString("X", CultureInfo.InvariantCulture.NumberFormat)}.log");
             }
 
             var fileLogger = StreamLogger.CreateWithNewFile(logPath);

src/PowerShellEditorServices.Hosting/EditorServicesLoader.cs

@@ -27,9 +27,10 @@ namespace Microsoft.PowerShell.EditorServices.Hosting
     /// </summary>
     public sealed class EditorServicesLoader : IDisposable
     {
-        private const int Net461Version = 394254;
 
 #if !CoreCLR
+        private const int Net461Version = 394254;
+
         private static readonly string s_psesBaseDirPath = Path.GetDirectoryName(Assembly.GetExecutingAssembly().Location);
 #endif
 
@@ -369,6 +370,7 @@ private string GetOSArchitecture()
             return RuntimeInformation.OSArchitecture.ToString();
         }
 
+        [System.Diagnostics.CodeAnalysis.SuppressMessage("Usage", "CA2208:Instantiate argument exceptions correctly", Justification = "Checking user-defined configuration")]
         private void ValidateConfiguration()
         {
             _logger.Log(PsesLogLevel.Diagnostic, "Validating configuration");

src/PowerShellEditorServices.Hosting/GlobalSuppressions.cs

@@ -0,0 +1,6 @@
+// This file is used by Code Analysis to maintain SuppressMessage
+// attributes that are applied to this project.
+// Project-level suppressions either have no target or are given
+// a specific target and scoped to a namespace, type, member, etc.
+
+[assembly: System.Diagnostics.CodeAnalysis.SuppressMessage("Globalization", "CA1303:Do not pass literals as localized parameters", Justification = "PSES is not localized", Scope = "module")]

src/PowerShellEditorServices.Hosting/Internal/EditorServicesRunner.cs

@@ -115,11 +115,17 @@ private async Task CreateEditorServicesAndRunUntilShutdown()
                     debugServerCreation = CreateDebugServerWithLanguageServerAsync(languageServer, usePSReadLine: _config.ConsoleRepl == ConsoleReplKind.PSReadLine);
                 }
 
+#pragma warning disable CS4014
+                // We don't need to wait for this to start, since we instead wait for it to complete later
                 languageServer.StartAsync();
+#pragma warning restore CS4014
 
                 if (creatingDebugServer)
                 {
+#pragma warning disable CS4014
+                    // We don't need to wait for this to start, since we instead wait for it to complete later
                     StartDebugServer(debugServerCreation);
+#pragma warning restore CS4014
                 }
 
                 await languageServer.WaitForShutdown().ConfigureAwait(false);
@@ -155,7 +161,11 @@ private async Task StartDebugServer(Task<PsesDebugServer> debugServerCreation)
             }
 
             _logger.Log(PsesLogLevel.Diagnostic, "Starting debug server");
+
+#pragma warning disable CS4014
+            // No need to await, since we just want to kick it off
             debugServer.StartAsync();
+#pragma warning restore CS4014
         }
 
         private Task RestartDebugServerAsync(PsesDebugServer debugServer, bool usePSReadLine)

src/PowerShellEditorServices.Hosting/Internal/PsesLoadContext.cs

@@ -54,6 +54,7 @@ protected override Assembly Load(AssemblyName assemblyName)
             return null;
         }
 
+        [System.Diagnostics.CodeAnalysis.SuppressMessage("Design", "CA1031:Do not catch general exception types", Justification = "Best effort; we must not throw if we fail")]
         private void TrySetName(string name)
         {
             try

src/PowerShellEditorServices/GlobalSuppressions.cs

@@ -0,0 +1,6 @@
+// This file is used by Code Analysis to maintain SuppressMessage
+// attributes that are applied to this project.
+// Project-level suppressions either have no target or are given
+// a specific target and scoped to a namespace, type, member, etc.
+
+[assembly: System.Diagnostics.CodeAnalysis.SuppressMessage("Globalization", "CA1303:Do not pass literals as localized parameters", Justification = "PSES is not localized", Scope = "module")]

src/PowerShellEditorServices/Server/PsesDebugServer.cs

@@ -117,7 +117,7 @@ public async Task StartAsync()
                     .WithHandler<DebugEvaluateHandler>();
 
                 logger.LogInformation("Handlers added");
-            });
+            }).ConfigureAwait(false);
         }
 
         public void Dispose()
@@ -129,7 +129,7 @@ public void Dispose()
 
         public async Task WaitForShutdown()
         {
-            await _serverStopped.Task;
+            await _serverStopped.Task.ConfigureAwait(false);
         }
 
         #region Events

src/PowerShellEditorServices/Server/PsesLanguageServer.cs

@@ -110,10 +110,10 @@ public async Task StartAsync()
                             {
                                 await serviceProvider.GetService<PowerShellContextService>().SetWorkingDirectoryAsync(
                                     workspaceService.WorkspacePath,
-                                    isPathAlreadyEscaped: false);
+                                    isPathAlreadyEscaped: false).ConfigureAwait(false);
                             }
                         });
-            });
+            }).ConfigureAwait(false);
 
             _serverStart.SetResult(true);
         }
@@ -124,8 +124,8 @@ await serviceProvider.GetService<PowerShellContextService>().SetWorkingDirectory
         /// <returns>A task that completes when the server is shut down.</returns>
         public async Task WaitForShutdown()
         {
-            await _serverStart.Task;
-            await LanguageServer.WaitForExit;
+            await _serverStart.Task.ConfigureAwait(false);
+            await LanguageServer.WaitForExit.ConfigureAwait(false);
         }
     }
 }