From 13eedbfcf97e402ade06f2be29f98723ef7ff286 Mon Sep 17 00:00:00 2001
From: Rob Mensching <rob@firegiant.com>
Date: Thu, 18 Oct 2018 13:42:54 -0700
Subject: Extract interfaces for Preprocess/Compile/Link/Bind/etc

---
 src/WixToolset.Core/Decompiler.cs | 75 +++++++++++++++++++++++++++++++++++++++
 1 file changed, 75 insertions(+)
 create mode 100644 src/WixToolset.Core/Decompiler.cs

(limited to 'src/WixToolset.Core/Decompiler.cs')

diff --git a/src/WixToolset.Core/Decompiler.cs b/src/WixToolset.Core/Decompiler.cs
new file mode 100644
index 00000000..5f14dfca
--- /dev/null
+++ b/src/WixToolset.Core/Decompiler.cs
@@ -0,0 +1,75 @@
+// 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.Core
+{
+    using System;
+    using WixToolset.Data;
+    using WixToolset.Extensibility;
+    using WixToolset.Extensibility.Data;
+    using WixToolset.Extensibility.Services;
+
+    /// <summary>
+    /// Decompiler of the WiX toolset.
+    /// </summary>
+    internal class Decompiler : IDecompiler
+    {
+        internal Decompiler(IServiceProvider serviceProvider)
+        {
+            this.ServiceProvider = serviceProvider;
+        }
+
+        public OutputType DecompileType { get; set; }
+
+        public string IntermediateFolder { get; set; }
+
+        public string OutputPath { get; set; }
+
+        public IServiceProvider ServiceProvider { get; }
+
+        public BindResult Decompile(IDecompileContext context)
+        {
+            // Pre-decompile.
+            //
+            foreach (var extension in context.Extensions)
+            {
+                extension.PreDecompile(context);
+            }
+
+            // Decompile.
+            //
+            var bindResult = this.BackendDecompile(context);
+
+            if (bindResult != null)
+            {
+                // Post-decompile.
+                //
+                foreach (var extension in context.Extensions)
+                {
+                    extension.PostDecompile(bindResult);
+                }
+            }
+
+            return bindResult;
+        }
+
+        private BindResult BackendDecompile(IDecompileContext context)
+        {
+            var extensionManager = context.ServiceProvider.GetService<IExtensionManager>();
+
+            var backendFactories = extensionManager.Create<IBackendFactory>();
+
+            foreach (var factory in backendFactories)
+            {
+                if (factory.TryCreateBackend(context.DecompileType.ToString(), context.OutputPath, out var backend))
+                {
+                    var result = backend.Decompile(context);
+                    return result;
+                }
+            }
+
+            // TODO: messaging that a backend could not be found to decompile the decompile type?
+
+            return null;
+        }
+    }
+}
-- 
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