1 files changed, 71 insertions, 0 deletions

diff --git a/src/WixToolset.BuildTasks/ToolsetTask_InProc.cs b/src/WixToolset.BuildTasks/ToolsetTask_InProc.cs
new file mode 100644
index 00000000..4b365b2a
--- /dev/null
+++ b/src/WixToolset.BuildTasks/ToolsetTask_InProc.cs
@@ -0,0 +1,71 @@
+// Copyright (c) .NET Foundation and contributors. All rights reserved. Licensed under the Microsoft Reciprocal License. See LICENSE.TXT file in the project root for full license information.
+
+namespace WixToolset.BuildTasks
+{
+    using System;
+    using System.Runtime.InteropServices;
+    using Microsoft.Build.Framework;
+    using WixToolset.Core;
+    using WixToolset.Data;
+    using WixToolset.Extensibility;
+    using WixToolset.Extensibility.Services;
+
+    public partial class ToolsetTask
+    {
+        protected sealed override int ExecuteTool(string pathToTool, string responseFileCommands, string commandLineCommands)
+        {
+            if (this.RunAsSeparateProcess)
+            {
+                return base.ExecuteTool(pathToTool, responseFileCommands, commandLineCommands);
+            }
+
+            return this.ExecuteInProc($"{commandLineCommands} {responseFileCommands}");
+        }
+
+        private int ExecuteInProc(string commandLineString)
+        {
+            this.Log.LogMessage(MessageImportance.Normal, $"({this.ToolName}){commandLineString}");
+
+            var serviceProvider = WixToolsetServiceProviderFactory.CreateServiceProvider();
+            var listener = new MsbuildMessageListener(this.Log, this.TaskShortName, this.BuildEngine.ProjectFileOfTaskNode);
+            int exitCode = -1;
+
+            try
+            {
+                exitCode = this.ExecuteCore(serviceProvider, listener, commandLineString);
+            }
+            catch (WixException e)
+            {
+                listener.Write(e.Error);
+            }
+            catch (Exception e)
+            {
+                this.Log.LogErrorFromException(e, showStackTrace: true, showDetail: true, null);
+
+                if (e is NullReferenceException || e is SEHException)
+                {
+                    throw;
+                }
+            }
+
+            if (exitCode == 0 && this.Log.HasLoggedErrors)
+            {
+                exitCode = -1;
+            }
+            return exitCode;
+        }
+
+        protected sealed override void LogToolCommand(string message)
+        {
+            // Only log this if we're actually going to do it.
+            if (this.RunAsSeparateProcess)
+            {
+                base.LogToolCommand(message);
+            }
+        }
+
+        protected abstract int ExecuteCore(IWixToolsetServiceProvider serviceProvider, IMessageListener messageListener, string commandLineString);
+
+        protected abstract string TaskShortName { get; }
+    }
+}