Added isolated assembly loading for issue MapsterMapper#714

.gitignore

@@ -181,3 +181,8 @@ project.lock.json
 /src/.vs
 /.vs
 src/.idea
+
+# VS Code settings
+.vscode/launch.json
+.vscode/settings.json
+.vscode/tasks.json

src/Mapster.Tool/IsolatedAssemblyLoadContext.cs

@@ -0,0 +1,76 @@
+using System;
+using System.Collections.Generic;
+using System.IO;
+using System.Linq;
+using System.Linq.Expressions;
+using System.Reflection;
+using System.Text;
+using CommandLine;
+using ExpressionDebugger;
+using Mapster.Models;
+using Mapster.Utils;
+using System;
+using System.Reflection;
+using System.Runtime.Loader;
+
+namespace Mapster.Tool
+{
+    public class IsolatedAssemblyContext : AssemblyLoadContext
+    {
+        private readonly AssemblyDependencyResolver resolver;
+
+        public IsolatedAssemblyContext(string assemblyPath)
+        {
+            resolver = new AssemblyDependencyResolver(assemblyPath);
+        }
+
+        protected override Assembly Load(AssemblyName assemblyName)
+        {
+            string assemblyPath = resolver.ResolveAssemblyToPath(assemblyName);
+            if (assemblyPath != null)
+            {
+                return LoadFromAssemblyPath(assemblyPath);
+            }
+
+            return null;
+        }
+
+        protected override IntPtr LoadUnmanagedDll(string unmanagedDllName)
+        {
+            string libraryPath = resolver.ResolveUnmanagedDllToPath(unmanagedDllName);
+            if (libraryPath != null)
+            {
+                return LoadUnmanagedDllFromPath(libraryPath);
+            }
+
+            return IntPtr.Zero;
+        }
+
+        public static Assembly LoadAssemblyFrom(string relativePath)
+        {
+            // Navigate up to the solution root
+            string root = Path.GetFullPath(
+                Path.Combine(
+                    Path.GetDirectoryName(
+                        Path.GetDirectoryName(
+                            Path.GetDirectoryName(
+                                Path.GetDirectoryName(
+                                    Path.GetDirectoryName(typeof(Program).Assembly.Location)
+                                )
+                            )
+                        )
+                    )
+                )
+            );
+
+            string assemblyLocation = Path.GetFullPath(
+                Path.Combine(root, relativePath.Replace('\\', Path.DirectorySeparatorChar))
+            );
+            Console.WriteLine($"Loading commands from: {assemblyLocation}");
+            IsolatedAssemblyContext loadContext = new IsolatedAssemblyContext(assemblyLocation);
+            return loadContext.LoadFromAssemblyName(
+                new AssemblyName(Path.GetFileNameWithoutExtension(assemblyLocation))
+            );
+        }
+    }
+}