C# MethodDefinition.AddLocal方法代码示例

 public void AddLocals(MethodDefinition hostMethod)
 {
     _constructorArguments = hostMethod.AddLocal<List<object>>();
     _currentArgument = hostMethod.AddLocal<object>();
     _methodContext = hostMethod.AddLocal<ITypeActivationContext>();
     _currentActivator = hostMethod.AddLocal<ITypeActivator>();
 }

        /// <summary>
        /// Adds local variables to the <paramref name="hostMethod"/>.
        /// </summary>
        /// <param name="hostMethod">The target method.</param>
        public override void AddLocals(MethodDefinition hostMethod)
        {
            _exception = hostMethod.AddLocal<Exception>();
            _invocationInfo = hostMethod.AddLocal<IInvocationInfo>();
            _exceptionHandler = hostMethod.AddLocal<IExceptionHandler>();
            _exceptionInfo = hostMethod.AddLocal<IExceptionHandlerInfo>();

            var returnType = hostMethod.ReturnType.ReturnType;
            if (returnType != _voidType)
                _returnValue = hostMethod.AddLocal<object>();
        }

        /// <summary>
        /// Emits the instructions that will instantiate the current implementation.
        /// </summary>
        /// <param name="dependency">The dependency that describes the service to be instantiated.</param>
        /// <param name="serviceMap">The service map that contains the list of dependencies in the application.</param>
        /// <param name="targetMethod">The target method.</param>
        public void Emit(IDependency dependency, IDictionary<IDependency, IImplementation> serviceMap, MethodDefinition targetMethod)
        {
            var declaringType = targetMethod.DeclaringType;
            var module = declaringType.Module;

            var listType = typeof(List<>).MakeGenericType(_serviceType);
            var listCtor = module.ImportConstructor(listType, new Type[0]);

            var listVariable = targetMethod.AddLocal(listType);
            var IL = targetMethod.GetILGenerator();
            IL.Emit(OpCodes.Newobj, listCtor);
            IL.Emit(OpCodes.Stloc, listVariable);

            var targetDependencies = (from d in serviceMap.Keys
                                     where d.ServiceType == _serviceType
                                     select d).ToArray();

            var addItem = module.ImportMethod("Add", listType);

            var serviceType = module.Import(_serviceType);
            var currentService = targetMethod.AddLocal(_serviceType);
            foreach(var currentDependency in targetDependencies)
            {
                IL.Emit(OpCodes.Ldloc, listVariable);

                // Instantiate the current service type
                var implementation = new ContainerCall(currentDependency.ServiceType, currentDependency.ServiceName);
                implementation.Emit(currentDependency, serviceMap, targetMethod);

                IL.Emit(OpCodes.Isinst, serviceType);
                IL.Emit(OpCodes.Stloc, currentService);

                // Call IInitialize.Initialize(container) on the current service type
                _initializer.Initialize(IL, module, currentService);

                IL.Emit(OpCodes.Ldloc, currentService);
                IL.Emit(OpCodes.Callvirt, addItem);
            }

            var enumerableType = typeof(IEnumerable<>).MakeGenericType(_serviceType);
            var importedEnumerableType = module.Import(enumerableType);

            IL.Emit(OpCodes.Ldloc, listVariable);
            IL.Emit(OpCodes.Isinst, importedEnumerableType);
        }

        /// <summary>
        /// Rewrites the instructions in the target method body.
        /// </summary>
        /// <param name="method">The target method.</param>
        /// <param name="IL">The <see cref="CilWorker"/> instance that represents the method body.</param>
        /// <param name="oldInstructions">The IL instructions of the original method body.</param>
        protected override void RewriteMethodBody(MethodDefinition method, CilWorker IL,
                                                  IEnumerable<Instruction> oldInstructions)
        {
            if (IsExcluded(method))
            {
                AddOriginalInstructions(IL, oldInstructions);
                return;
            }

            VariableDefinition interceptionDisabled = method.AddLocal<bool>();
            VariableDefinition invocationInfo = method.AddLocal<IInvocationInfo>();
            VariableDefinition aroundInvokeProvider = method.AddLocal<IAroundInvokeProvider>();
            VariableDefinition methodReplacementProvider = method.AddLocal<IMethodReplacementProvider>();

            VariableDefinition returnValue = method.AddLocal<object>();
            VariableDefinition classMethodReplacementProvider = method.AddLocal<IMethodReplacementProvider>();

            Func<ModuleDefinition, MethodReference> getInstanceMethodReplacementProviderMethod =
                module => module.Import(typeof (IMethodReplacementHost).GetMethod("get_MethodBodyReplacementProvider"));

            var parameters = new MethodBodyRewriterParameters(IL,
                                                              oldInstructions,
                                                              interceptionDisabled,
                                                              invocationInfo, returnValue,
                                                              aroundInvokeProvider,
                                                              methodReplacementProvider,
                                                              classMethodReplacementProvider,
                                                              getInstanceMethodReplacementProviderMethod,
                                                              typeof (AroundMethodBodyRegistry));

            var emitter = new InvocationInfoEmitter(true);

            IInstructionEmitter getMethodReplacementProvider =
                new GetMethodReplacementProvider(methodReplacementProvider, method,
                                                 getInstanceMethodReplacementProviderMethod);

            IInstructionEmitter getInterceptionDisabled = new GetInterceptionDisabled(parameters);
            ISurroundMethodBody surroundMethodBody = new SurroundMethodBody(parameters, "AroundMethodBodyProvider");
            IInstructionEmitter getClassMethodReplacementProvider = new GetClassMethodReplacementProvider(parameters,
                                                                                                          module =>
                                                                                                          module.Import(
                                                                                                              typeof (
                                                                                                                  MethodBodyReplacementProviderRegistry
                                                                                                                  ).
                                                                                                                  GetMethod
                                                                                                                  ("GetProvider")));
            IInstructionEmitter addMethodReplacement = new AddMethodReplacementImplementation(parameters);

            var rewriter = new InterceptAndSurroundMethodBody(emitter, getInterceptionDisabled, surroundMethodBody,
                                                              getMethodReplacementProvider,
                                                              getClassMethodReplacementProvider, addMethodReplacement,
                                                              parameters);

            // Determine whether or not the method should be intercepted
            rewriter.Rewrite(method, IL, oldInstructions);
        }

        public override void AddLocals(MethodDefinition hostMethod)
        {
            var body = hostMethod.Body;
            body.InitLocals = true;

            _currentArguments = hostMethod.AddLocal<Stack<object>>("__arguments");
            _currentArgument = hostMethod.AddLocal<object>("__currentArgument");
            _parameterTypes = hostMethod.AddLocal<Type[]>("__parameterTypes");
            _typeArguments = hostMethod.AddLocal<Type[]>("__typeArguments");
            _invocationInfo = hostMethod.AddLocal<IInvocationInfo>("___invocationInfo");

            _target = hostMethod.AddLocal<object>("__target");
            _replacement = hostMethod.AddLocal<IInterceptor>("__interceptor");
            _canReplaceFlag = hostMethod.AddLocal<bool>("__canReplace");

            _staticProvider = hostMethod.AddLocal<IMethodReplacementProvider>("__staticProvider");
            _instanceProvider = hostMethod.AddLocal<IMethodReplacementProvider>("__instanceProvider");
            _interceptionDisabled = hostMethod.AddLocal<bool>();

            _methodReplacementProvider = hostMethod.AddLocal<IMethodReplacementProvider>();
            _aroundInvokeProvider = hostMethod.AddLocal<IAroundInvokeProvider>();
            _returnValue = hostMethod.AddLocal<object>();
        }

 /// <summary>
 /// Adds locals to the target method.
 /// </summary>
 /// <param name="hostMethod">The method to be modified</param>
 public override void AddLocals(MethodDefinition hostMethod)
 {
     _fieldContext = hostMethod.AddLocal<IFieldInterceptionContext>("__<>FieldInterceptionContext<>__");
     _fieldInterceptor = hostMethod.AddLocal<IFieldInterceptor>("__<>FieldInterceptor<>__");
     _currentArgument = hostMethod.AddLocal<object>("__<>CurrentArgument<>__");
 }

        /// <summary>
        /// Builds the decrypt method.
        /// </summary>
        /// <param name="context">The context.</param>
        /// <param name="assembly">The assembly.</param>
        /// <returns></returns>
        private static MethodDefinition BuildDecryptMethod(ICloakContext context, AssemblyDefinition assembly)
        {
            var byteArrayType = assembly.Import(typeof (byte[]));
#if USE_FRIENDLY_NAMING
            MethodDefinition method = new MethodDefinition("DecryptData",
                                                           MethodAttributes.Private | MethodAttributes.HideBySig |
                                                           MethodAttributes.Static, byteArrayType);
#else
            MethodDefinition method = new MethodDefinition(context.NameManager.GenerateName(NamingTable.Method),
                                                           MethodAttributes.Private | MethodAttributes.HideBySig |
                                                           MethodAttributes.Static, assembly.Import(typeof(byte[])));
#endif
            method.Body.InitLocals = true;
            method.Body.MaxStackSize = 5;
            method.Parameters.Add(new ParameterDefinition(byteArrayType));
            method.Parameters.Add(new ParameterDefinition(byteArrayType));
            method.Parameters.Add(new ParameterDefinition(byteArrayType));

            //Declare the locals - first four have quick reference
            method.AddLocal(assembly, typeof(Rijndael));
            method.AddLocal(assembly, typeof(ICryptoTransform));
            method.AddLocal(assembly, typeof(MemoryStream));
            method.AddLocal(assembly, typeof(CryptoStream));
            var paddedPlain = method.AddLocal(assembly, typeof(byte[]));
            var length = method.AddLocal(assembly, typeof(int));
            var plain = method.AddLocal(assembly, typeof(byte[]));
            var returnArray = method.AddLocal(assembly, typeof(byte[]));
            var inferredBool = method.AddLocal(assembly, typeof(bool));

            //Add the body
            var il = method.Body.GetILProcessor();

            //Inject anti reflector code
            InjectAntiReflectorCode(il, il.Create(OpCodes.Nop));

            //Start the body
            var rijndaelCreate = typeof(Rijndael).GetMethod("Create", Type.EmptyTypes);
            il.Append(il.Create(OpCodes.Call, assembly.Import(rijndaelCreate)));
            il.Append(OpCodes.Stloc_0);
            il.Append(OpCodes.Ldloc_0);
            il.Append(OpCodes.Ldc_I4_1);
            var symmetricAlgMode = typeof(SymmetricAlgorithm).GetProperty("Mode");
            il.Append(il.Create(OpCodes.Callvirt, assembly.Import(symmetricAlgMode.GetSetMethod())));
            il.Append(OpCodes.Nop);
            il.Append(OpCodes.Ldloc_0);
            il.Append(OpCodes.Ldarg_1);
            il.Append(OpCodes.Ldarg_2);
            var createDecryptor = typeof(SymmetricAlgorithm).GetMethod("CreateDecryptor",
                                                                        new[] { typeof(byte[]), typeof(byte[]) });
            il.Append(il.Create(OpCodes.Callvirt, assembly.Import(createDecryptor)));
            il.Append(OpCodes.Stloc_1);
            var startOfThirdTry = il.Create(OpCodes.Nop);
            il.Append(startOfThirdTry);
            il.Append(OpCodes.Ldarg_0);

            //New memory stream
            var memoryStreamCtor = typeof(MemoryStream).GetConstructor(new [] { typeof(byte[]) });
            il.Append(il.Create(OpCodes.Newobj, assembly.Import(memoryStreamCtor)));
            il.Append(OpCodes.Stloc_2);
            var startOfSecondTry = il.Create(OpCodes.Nop);
            il.Append(startOfSecondTry);
            il.Append(OpCodes.Ldloc_2);
            il.Append(OpCodes.Ldloc_1);
            il.Append(OpCodes.Ldc_I4_0);

            //New crypto stream
            var cryptoStreamCtor =
                typeof(CryptoStream).GetConstructor(new[]
                                                                     {
                                                                         typeof (Stream), typeof (ICryptoTransform),
                                                                         typeof (CryptoStreamMode)
                                                                     });
            il.Append(il.Create(OpCodes.Newobj, assembly.Import(cryptoStreamCtor)));
            il.Append(OpCodes.Stloc_3);
            var startOfFirstTry = il.Create(OpCodes.Nop);
            il.Append(startOfFirstTry);
            il.Append(OpCodes.Ldarg_0);
            il.Append(OpCodes.Ldlen);
            il.Append(OpCodes.Conv_I4);
            il.Append(il.Create(OpCodes.Newarr, assembly.Import(typeof(byte))));
            il.Append(il.Create(OpCodes.Stloc_S, paddedPlain));
            il.Append(OpCodes.Ldloc_3);
            il.Append(il.Create(OpCodes.Ldloc_S, paddedPlain));
            il.Append(OpCodes.Ldc_I4_0);
            il.Append(il.Create(OpCodes.Ldloc_S, paddedPlain));
            il.Append(OpCodes.Ldlen);
            il.Append(OpCodes.Conv_I4);

            //Get the read method and read into this byte array (full length)
            var read = typeof(Stream).GetMethod("Read", new[] { typeof(byte[]), typeof(int), typeof(int) });
            il.Append(il.Create(OpCodes.Callvirt, assembly.Import(read)));
            il.Append(il.Create(OpCodes.Stloc_S, length));
            il.Append(il.Create(OpCodes.Ldloc_S, length));
            il.Append(il.Create(OpCodes.Newarr, assembly.Import(typeof(byte))));
//.........这里部分代码省略.........

        /// <summary>
        /// Builds the hash method.
        /// </summary>
        /// <param name="context">The context.</param>
        /// <param name="assembly">The assembly.</param>
        /// <returns></returns>
        private static MethodDefinition BuildHashMethod(ICloakContext context, AssemblyDefinition assembly)
        {
#if USE_FRIENDLY_NAMING
            MethodDefinition method = new MethodDefinition("Hash",
                                               MethodAttributes.Private | MethodAttributes.HideBySig |
                                               MethodAttributes.Static, assembly.Import(typeof(string)));
#else
            MethodDefinition method = new MethodDefinition(context.NameManager.GenerateName(NamingTable.Method),
                                               MethodAttributes.Private | MethodAttributes.HideBySig |
                                               MethodAttributes.Static, assembly.Import(typeof(string)));
#endif
            method.Parameters.Add(new ParameterDefinition(assembly.Import(typeof(byte[]))));
            method.Body.InitLocals = true;
            method.Body.MaxStackSize = 2;
            method.AddLocal(assembly, typeof(SHA256));
            method.AddLocal(assembly, typeof(string));

            //Easy method to output
            var il = method.Body.GetILProcessor();

            //Inject some anti reflector stuff
            InjectAntiReflectorCode(il, il.Create(OpCodes.Nop));

            //Create the SHA256 object
            var sha256Create = typeof(SHA256).GetMethod("Create", Type.EmptyTypes);
            il.Append(il.Create(OpCodes.Call, assembly.Import(sha256Create)));
            il.Append(OpCodes.Stloc_0);
            il.Append(OpCodes.Ldloc_0);
            il.Append(OpCodes.Ldarg_0);
            //Call the compute method
            var compute = typeof(HashAlgorithm).GetMethod("ComputeHash", new[] { typeof(byte[]) });
            il.Append(il.Create(OpCodes.Callvirt, assembly.Import(compute)));
            //Finally, convert to base 64
            var toBase64 = typeof(Convert).GetMethod("ToBase64String", new[] { typeof(byte[]) });
            il.Append(il.Create(OpCodes.Call, assembly.Import(toBase64)));
            il.Append(OpCodes.Stloc_1);
            var retVar = il.Create(OpCodes.Ldloc_1);
            il.Append(il.Create(OpCodes.Br_S, retVar));
            il.Append(retVar);
            il.Append(OpCodes.Ret);
            return method;
        }

        /// <summary>
        /// Builds the load type method.
        /// </summary>
        /// <param name="context">The context.</param>
        /// <param name="assembly">The assembly.</param>
        /// <param name="loadAssembly">The load assembly.</param>
        /// <returns></returns>
        private static MethodDefinition BuildLoadTypeMethod(ICloakContext context, AssemblyDefinition assembly, MethodReference loadAssembly)
        {
#if USE_FRIENDLY_NAMING
            MethodDefinition method = new MethodDefinition("LoadType",
                       MethodAttributes.Private | MethodAttributes.HideBySig, assembly.Import(typeof(Type)));
#else
            MethodDefinition method = new MethodDefinition(context.NameManager.GenerateName(NamingTable.Method),
                                   MethodAttributes.Private | MethodAttributes.HideBySig, assembly.Import(typeof(Type)));
#endif

            //Declare the resource parameter
            method.Parameters.Add(new ParameterDefinition(assembly.Import(typeof(string))));
            method.Parameters.Add(new ParameterDefinition(assembly.Import(typeof(string))));
            
            method.Body.InitLocals = true;
            method.Body.MaxStackSize = 2;
            method.AddLocal(assembly, typeof(Assembly)); //Assembly
            method.AddLocal(assembly, typeof(Type)); //Temp variable for return type
            method.AddLocal(assembly, typeof(bool)); //Temp variable for comparison

            //Start with injection
            var il = method.Body.GetILProcessor();
            InjectAntiReflectorCode(il, il.Create(OpCodes.Nop));

            //Start the code
            il.Append(OpCodes.Ldarg_0);
            il.Append(OpCodes.Ldarg_1);
            il.Append(il.Create(OpCodes.Call, loadAssembly));
            il.Append(OpCodes.Stloc_0);
            il.Append(OpCodes.Ldloc_0);
            il.Append(OpCodes.Ldnull);
            il.Append(OpCodes.Ceq);
            il.Append(OpCodes.Ldc_I4_0);
            il.Append(OpCodes.Ceq);
            il.Append(OpCodes.Stloc_2);
            il.Append(OpCodes.Ldloc_2);

            //Get type
            var getType = il.Create(OpCodes.Ldloc_0);
            il.Append(il.Create(OpCodes.Brtrue_S, getType));
            il.Append(OpCodes.Ldnull);
            il.Append(OpCodes.Stloc_1);

            //Prepare to return the temp type
            var returnType = il.Create(OpCodes.Ldloc_1);

            //Jump to it
            il.Append(il.Create(OpCodes.Br_S, returnType));
            il.Append(getType);
            il.Append(OpCodes.Ldarg_2);
            var getTypeMethod = typeof (Assembly).GetMethod("GetType", new[] {typeof (string)});
            il.Append(il.Create(OpCodes.Callvirt, assembly.Import(getTypeMethod)));
            il.Append(OpCodes.Stloc_1);
            il.Append(il.Create(OpCodes.Br_S, returnType));
            il.Append(returnType);
            il.Append(OpCodes.Ret);
            return method;
        }

        /// <summary>
        /// Builds the load assembly method.
        /// </summary>
        /// <param name="context">The context.</param>
        /// <param name="assembly">The assembly.</param>
        /// <param name="loadedAssemblies">The loaded assemblies.</param>
        /// <param name="executingAssembly">The executing assembly.</param>
        /// <param name="decryptData">The decrypt data.</param>
        /// <param name="hashData">The hash data.</param>
        /// <param name="passwordKey">The password key.</param>
        /// <param name="salt">The salt.</param>
        /// <returns></returns>
        private static MethodDefinition BuildLoadAssemblyMethod(ICloakContext context, AssemblyDefinition assembly, FieldReference loadedAssemblies, FieldReference executingAssembly, MethodReference decryptData, MethodReference hashData, string passwordKey, Guid salt)
        {
#if USE_FRIENDLY_NAMING
            MethodDefinition method = new MethodDefinition("LoadAssembly",
                       MethodAttributes.Private | MethodAttributes.HideBySig, assembly.Import(typeof(Assembly)));
#else
            MethodDefinition method = new MethodDefinition(context.NameManager.GenerateName(NamingTable.Method),
                                   MethodAttributes.Private | MethodAttributes.HideBySig, assembly.Import(typeof(Assembly)));
#endif

            //Declare the resource parameter
            method.Parameters.Add(new ParameterDefinition(assembly.Import(typeof(string))));

            method.Body.InitLocals = true;
            method.Body.MaxStackSize = 4;
            method.AddLocal(assembly, typeof(string)); //Hash
            method.AddLocal(assembly, typeof(Stream)); //Stream for loading
            method.AddLocal(assembly, typeof(byte[])); //Hash data
            method.AddLocal(assembly, typeof(byte[])); //Data
            var password = method.AddLocal(assembly, typeof(Rfc2898DeriveBytes)); //Password
            var keyBytes = method.AddLocal(assembly, typeof(byte[])); //Key bytes
            var initVector = method.AddLocal(assembly, typeof(byte[])); //Init vector
            var rawAssembly = method.AddLocal(assembly, typeof(byte[])); //Assembly raw bytes
            var actualAssembly = method.AddLocal(assembly, typeof(Assembly)); //Actual Assembly
            var tempAssembly = method.AddLocal(assembly, typeof(Assembly)); //Temp Assembly
            var tempBool = method.AddLocal(assembly, typeof(bool)); //Temp bool

            //Build the body
            var il = method.Body.GetILProcessor();
            InjectAntiReflectorCode(il, il.Create(OpCodes.Nop));

#if VERBOSE_OUTPUT
            DebugLine(assembly, il, "Loading ", il.Create(OpCodes.Ldarg_1));
#endif

            //Check the cache first
            il.Append(OpCodes.Ldarg_0);
            il.Append(il.Create(OpCodes.Ldfld, loadedAssemblies));
            il.Append(OpCodes.Ldarg_1);
            var containsKey = typeof (Dictionary<string, Assembly>).GetMethod("ContainsKey");
            il.Append(il.Create(OpCodes.Callvirt, assembly.Import(containsKey)));
            il.Append(OpCodes.Ldc_I4_0);
            il.Append(OpCodes.Ceq);
            il.Append(il.Create(OpCodes.Stloc_S, tempBool));
            il.Append(il.Create(OpCodes.Ldloc_S, tempBool));
            //Jump if we don't have it, other wise return it
            var startFindType = il.Create(OpCodes.Ldarg_0);
            il.Append(il.Create(OpCodes.Brtrue_S, startFindType));
            
            //Otherwise return the cached assembly
            il.Append(OpCodes.Ldarg_0);
            il.Append(il.Create(OpCodes.Ldfld, loadedAssemblies));
            il.Append(OpCodes.Ldarg_1);
            //We are retrieving the name item
            var getItem = typeof (Dictionary<string, Assembly>).GetProperty("Item");
            il.Append(il.Create(OpCodes.Callvirt, assembly.Import(getItem.GetGetMethod())));
            //Store the variable in our return arg
            il.Append(il.Create(OpCodes.Stloc_S, tempAssembly));
            //Branch to our return routine
            var returnSequence = il.Create(OpCodes.Nop);
            il.Append(il.Create(OpCodes.Br, returnSequence));

            //Back to finding our type
            //Let's check the hash first
            il.Append(startFindType);
            il.Append(il.Create(OpCodes.Ldfld, executingAssembly));
            il.Append(OpCodes.Ldarg_1);
            il.Append(il.Create(OpCodes.Ldstr, ".v0"));
            //Concat the arg1 (resourceName) and v0
            var concat = assembly.Import(typeof (String).GetMethod("Concat", new[] {typeof (string), typeof (string)}));
            il.Append(il.Create(OpCodes.Call, concat));
            //Now get this from the manifest
            var getManifest = assembly.Import(typeof (Assembly).GetMethod("GetManifestResourceStream", new[] {typeof (string)}));
            il.Append(il.Create(OpCodes.Callvirt, getManifest));
            //Store the result in our temp local
            il.Append(OpCodes.Stloc_1);
            var try1Start = il.Create(OpCodes.Nop);
            il.Append(try1Start);
            //Make sure it's not null
            il.Append(OpCodes.Ldloc_1);
            il.Append(OpCodes.Ldnull);
            il.Append(OpCodes.Ceq);
            il.Append(OpCodes.Ldc_I4_0);
            il.Append(OpCodes.Ceq);
            il.Append(il.Create(OpCodes.Stloc_S, tempBool));
            il.Append(il.Create(OpCodes.Ldloc_S, tempBool));
            //Return null if it is
            var startDeclareArray = il.Create(OpCodes.Ldloc_1);
//.........这里部分代码省略.........

        /// <summary>
        /// Builds the load assemblies method.
        /// </summary>
        /// <param name="context">The context.</param>
        /// <param name="assembly">The assembly.</param>
        /// <param name="executingAssembly">The executing assembly.</param>
        /// <param name="loadAssembly">The load assembly.</param>
        /// <returns></returns>
        private static MethodDefinition BuildLoadAssembliesMethod(ICloakContext context, AssemblyDefinition assembly, FieldReference executingAssembly, MethodReference loadAssembly)
        {
#if USE_FRIENDLY_NAMING
            MethodDefinition method = new MethodDefinition("LoadAssemblies",
                                               MethodAttributes.Private | MethodAttributes.HideBySig, assembly.Import(typeof(void)));
#else
            MethodDefinition method = new MethodDefinition(context.NameManager.GenerateName(NamingTable.Method),
                                               MethodAttributes.Private | MethodAttributes.HideBySig, assembly.Import(typeof(void)));
#endif
            method.Body.InitLocals = true;
            method.Body.MaxStackSize = 2;
            method.AddLocal(assembly, typeof (string)); //Resource name
            method.AddLocal(assembly, typeof (string[])); //Foreach temp
            method.AddLocal(assembly, typeof (int)); //Loop counter
            method.AddLocal(assembly, typeof(bool));

            //Build the body
            var il = method.Body.GetILProcessor();
            InjectAntiReflectorCode(il, il.Create(OpCodes.Nop));
            il.Append(OpCodes.Nop);
            il.Append(OpCodes.Ldarg_0);
            il.Append(il.Create(OpCodes.Ldfld, executingAssembly));

            //Get the resources - foreach get's converted to a standard loop
            var resourcesMethod = typeof (Assembly).GetMethod("GetManifestResourceNames");
            il.Append(il.Create(OpCodes.Callvirt, assembly.Import(resourcesMethod)));
            il.Append(OpCodes.Stloc_1);

            //Initialise the loop counter
            il.Append(OpCodes.Ldc_I4_0);
            il.Append(OpCodes.Stloc_2);

            //For loop comparison (well create somewhere to jump to)
            var loopComparisonStart = il.Create(OpCodes.Ldloc_2);

            //Check the comparison now
            il.Append(il.Create(OpCodes.Br_S, loopComparisonStart));
            var startCode = il.Create(OpCodes.Ldloc_1);
            il.Append(startCode);
            il.Append(OpCodes.Ldloc_2);
            il.Append(OpCodes.Ldelem_Ref);
            il.Append(OpCodes.Stloc_0);
            il.Append(OpCodes.Nop);
            il.Append(OpCodes.Ldloc_0);

            //Make sure it doesn't end with .v0 or .e
            il.Append(il.Create(OpCodes.Ldstr, ".v0"));
            var endsWith = assembly.Import(typeof (String).GetMethod("EndsWith", new[] {typeof (string)}));
            il.Append(il.Create(OpCodes.Callvirt, endsWith));

            //Jump out as need be
            var load0 = il.Create(OpCodes.Ldc_I4_0);
            il.Append(il.Create(OpCodes.Brtrue_S, load0));
            il.Append(OpCodes.Ldloc_0);
            
            //Check the .e
            il.Append(il.Create(OpCodes.Ldstr, ".e"));
            il.Append(il.Create(OpCodes.Callvirt, endsWith));
            il.Append(OpCodes.Ldc_I4_0);
            il.Append(OpCodes.Ceq);
            var storeTempBool = il.Create(OpCodes.Stloc_3);
            il.Append(il.Create(OpCodes.Br_S, storeTempBool));
            il.Append(load0);
            il.Append(storeTempBool);
            il.Append(OpCodes.Ldloc_3);
            var loadArg0 = il.Create(OpCodes.Ldarg_0);
            il.Append(il.Create(OpCodes.Brtrue_S, loadArg0));
            var loadLoopCounter = il.Create(OpCodes.Ldloc_2);
            il.Append(il.Create(OpCodes.Br_S, loadLoopCounter));
            il.Append(loadArg0);
            il.Append(OpCodes.Ldloc_0);

            //Finally load the assembly
            il.Append(il.Create(OpCodes.Call, loadAssembly));
            il.Append(OpCodes.Pop);
            il.Append(OpCodes.Nop);
            
            //Loop counter
            il.Append(loadLoopCounter);
            il.Append(OpCodes.Ldc_I4_1);
            il.Append(OpCodes.Add);
            il.Append(OpCodes.Stloc_2);

            //Loop comparison
            il.Append(loopComparisonStart);
            il.Append(OpCodes.Ldloc_1);
            il.Append(OpCodes.Ldlen);
            il.Append(OpCodes.Conv_I4);
            il.Append(OpCodes.Clt);
            //Store the result
            il.Append(OpCodes.Stloc_3);
            //Load it and compare
//.........这里部分代码省略.........

        /// <summary>
        /// Builds the main method.
        /// </summary>
        /// <param name="assembly">The assembly.</param>
        /// <param name="context">The context.</param>
        /// <param name="programType">Type of the program.</param>
        /// <param name="getExecutingAssembly">The get executing assembly.</param>
        /// <param name="currentDomain">The current domain.</param>
        /// <param name="eventHandler">The event handler.</param>
        /// <param name="assemblyResolve">The assembly resolve.</param>
        /// <param name="resolveMethod">The resolve method.</param>
        /// <param name="startMethod">The start method.</param>
        /// <returns></returns>
        private static MethodDefinition BuildMainMethod(AssemblyDefinition assembly, ICloakContext context, TypeDefinition programType, MethodReference getExecutingAssembly, MethodReference currentDomain, MethodReference eventHandler, MethodReference assemblyResolve, MethodReference resolveMethod, MethodReference startMethod)
        {
#if USE_FRIENDLY_NAMING
            MethodDefinition entryPoint =
                new MethodDefinition("Main",
                                     MethodAttributes.Private | MethodAttributes.Static |
                                     MethodAttributes.HideBySig, assembly.Import(typeof(void)));
#else
            MethodDefinition entryPoint =
                new MethodDefinition(context.NameManager.GenerateName(NamingTable.Method),
                                     MethodAttributes.Private | MethodAttributes.Static |
                                     MethodAttributes.HideBySig, assembly.Import(typeof(void)));
#endif
            entryPoint.Body.InitLocals = true;
            entryPoint.Body.MaxStackSize = 4;

#if USE_APPDOMAIN
            //Initialise some locals
            entryPoint.AddLocal(assembly, typeof(AppDomain));
            entryPoint.AddLocal(assembly, typeof(Assembly));
#endif
            VariableDefinition result = new VariableDefinition(programType);
            entryPoint.Body.Variables.Add(result);

            //Add the method
            assembly.EntryPoint = entryPoint;

            //Declare the il to build the code
            ILProcessor il = entryPoint.Body.GetILProcessor();

            //First of all add the anti reflector code
            InjectAntiReflectorCode(il, il.Create(OpCodes.Nop));

            //Now output the code - essentially:
            /*
            AppDomain domain = AppDomain.CreateDomain("App");
            Assembly executingAssembly = Assembly.GetExecutingAssembly();
            ProgramRunner runner = (ProgramRunner)domain.CreateInstanceAndUnwrap(executingAssembly.FullName, "TestBootstrapper.ProgramRunner");
            AppDomain.CurrentDomain.AssemblyResolve += runner.ResolveAssembly;
            runner.Start();
             */
#if USE_APPDOMAIN
#if USE_FRIENDLY_NAMING
            il.Append(il.Create(OpCodes.Ldstr, "AppDomainName"));
#else
            il.Append(il.Create(OpCodes.Ldstr, context.NameManager.GenerateName(NamingTable.Type)));
#endif

            //Get the AppDomain::Create(string) method
            var appDomainCreate = assembly.Import(typeof(AppDomain).GetMethod("CreateDomain", new[] { typeof(string) }));
            il.Append(il.Create(OpCodes.Call, appDomainCreate));
            il.Append(OpCodes.Stloc_0);

            //Get the Assembly::GetExecutingAssembly() method
            il.Append(il.Create(OpCodes.Call, getExecutingAssembly));

            il.Append(OpCodes.Stloc_1);
            il.Append(OpCodes.Ldloc_0);
            il.Append(OpCodes.Ldloc_1);

            //Assembly::get_FullName()
            var getFullName = typeof(Assembly).GetProperty("FullName");
            il.Append(il.Create(OpCodes.Callvirt, assembly.Import(getFullName.GetGetMethod())));

            il.Append(il.Create(OpCodes.Ldstr,
                                String.Format("{0}.{1}", programType.Namespace, programType.Name)));

            //AppDomain::CreateInstanceAndUnwrap(string, string)
            var createInstanceAndUnwrap = typeof(AppDomain).GetMethod("CreateInstanceAndUnwrap",
                                                                       new[]
                                                                                       {
                                                                                           typeof (string), typeof (string)
                                                                                       });
            il.Append(il.Create(OpCodes.Callvirt, assembly.Import(createInstanceAndUnwrap)));
            il.Append(il.Create(OpCodes.Castclass, programType));
            il.Append(OpCodes.Stloc_2);

            //AppDomain::get_CurrentDomain
            il.Append(il.Create(OpCodes.Call, currentDomain));
            il.Append(OpCodes.Ldloc_2);

            //Get the function
            il.Append(il.Create(OpCodes.Ldftn, resolveMethod));
            il.Append(il.Create(OpCodes.Newobj, eventHandler));
            il.Append(il.Create(OpCodes.Callvirt, assemblyResolve));

            il.Append(OpCodes.Nop);
//.........这里部分代码省略.........

        /// <summary>
        /// Builds the start method.
        /// </summary>
        /// <param name="context">The context.</param>
        /// <param name="assembly">The assembly.</param>
        /// <param name="executingAssembly">The executing assembly.</param>
        /// <param name="assembliesLoaded">The assemblies loaded.</param>
        /// <param name="loadType">Type of the load.</param>
        /// <param name="loadAssemblies">The load assemblies.</param>
        /// <returns></returns>
        private static MethodDefinition BuildStartMethod(ICloakContext context, AssemblyDefinition assembly, FieldReference executingAssembly, FieldReference assembliesLoaded, MethodReference loadType, MethodReference loadAssemblies)
        {
#if USE_FRIENDLY_NAMING
            MethodDefinition method = new MethodDefinition("Start",
                       MethodAttributes.Public | MethodAttributes.HideBySig, assembly.Import(typeof(void)));
#else
            MethodDefinition method = new MethodDefinition(context.NameManager.GenerateName(NamingTable.Method),
                                   MethodAttributes.Public | MethodAttributes.HideBySig, assembly.Import(typeof(void)));
#endif

            method.Body.InitLocals = true;
            method.Body.MaxStackSize = 3;
            method.AddLocal(assembly, typeof(string));   //entryAssemblyResource
            method.AddLocal(assembly, typeof(string));   //entryType
            method.AddLocal(assembly, typeof(string));   //entryMethod
            method.AddLocal(assembly, typeof(string));   //resourceName
            var s = method.AddLocal(assembly, typeof(Stream));   //s
            var sr = method.AddLocal(assembly, typeof(StreamReader));   //sr
            var type = method.AddLocal(assembly, typeof(Type));   //type
            var methodInfo = method.AddLocal(assembly, typeof(MethodInfo));   //method
            var tempStringArray = method.AddLocal(assembly, typeof (string[]));
            var tempInt = method.AddLocal(assembly, typeof(int));
            var tempBool = method.AddLocal(assembly, typeof(bool));

            //Get the il builder
            var il = method.Body.GetILProcessor();

            //Inject the anti reflector code
            InjectAntiReflectorCode(il, il.Create(OpCodes.Nop));

            //Start it off - declare some variables
            il.Append(OpCodes.Ldnull);
            il.Append(OpCodes.Stloc_0);
            il.Append(OpCodes.Ldnull);
            il.Append(OpCodes.Stloc_1);
            il.Append(OpCodes.Ldnull);
            il.Append(OpCodes.Stloc_2);
            il.Append(OpCodes.Nop);
            il.Append(OpCodes.Ldarg_0);

            //We need to find the entry point so start a loop to find
            il.Append(il.Create(OpCodes.Ldfld, executingAssembly));
            var getManifestResourceNames = assembly.Import(typeof (Assembly).GetMethod("GetManifestResourceNames"));
            il.Append(il.Create(OpCodes.Callvirt, getManifestResourceNames));
            il.Append(il.Create(OpCodes.Stloc_S, tempStringArray));

            //Init the loop counter
            il.Append(OpCodes.Ldc_I4_0);
            il.Append(il.Create(OpCodes.Stloc_S, tempInt));
            //Jump to the loop comparison
            var startLoopComparison = il.Create(OpCodes.Ldloc_S, tempInt);
            il.Append(il.Create(OpCodes.Br, startLoopComparison));

            //Load the current item in a temp variable
            var getTempVar = il.Create(OpCodes.Ldloc_S, tempStringArray);
            il.Append(getTempVar);
            il.Append(il.Create(OpCodes.Ldloc_S, tempInt));
            il.Append(OpCodes.Ldelem_Ref);
            il.Append(OpCodes.Stloc_3);

            //Now start the actual body
            il.Append(OpCodes.Nop);
            il.Append(OpCodes.Ldloc_3);
            il.Append(il.Create(OpCodes.Ldstr, ".e"));
            var endsWith = assembly.Import(typeof (String).GetMethod("EndsWith", new[] {typeof (string)}));
            il.Append(il.Create(OpCodes.Callvirt, endsWith));
            il.Append(OpCodes.Ldc_I4_0); 
            il.Append(OpCodes.Ceq);
            il.Append(il.Create(OpCodes.Stloc_S, tempBool));
            il.Append(il.Create(OpCodes.Ldloc_S, tempBool));

            //Branch to increment statement if not true (i.e. equal to 0/false)
            var startIncrement = il.Create(OpCodes.Nop);
            il.Append(il.Create(OpCodes.Brtrue, startIncrement));
            //Get the stream
            il.Append(OpCodes.Nop);
            il.Append(OpCodes.Ldarg_0);
            il.Append(il.Create(OpCodes.Ldfld, executingAssembly));
            il.Append(OpCodes.Ldloc_3);
            var getManifestResourceStream =
                assembly.Import(typeof (Assembly).GetMethod("GetManifestResourceStream", new[] {typeof (string)}));
            il.Append(il.Create(OpCodes.Callvirt, getManifestResourceStream));
            il.Append(il.Create(OpCodes.Stloc_S, s));
            //Make sure it's not null
            il.Append(il.Create(OpCodes.Ldloc_S, s));
            il.Append(OpCodes.Ldnull);
            il.Append(OpCodes.Ceq);
            il.Append(OpCodes.Ldc_I4_0);
            il.Append(OpCodes.Ceq);
            il.Append(il.Create(OpCodes.Stloc_S, tempBool));
//.........这里部分代码省略.........

        /// <summary>
        /// Builds the resolve method.
        /// </summary>
        /// <param name="context">The context.</param>
        /// <param name="assembly">The definition.</param>
        /// <param name="assemblyLock">The assembly lock.</param>
        /// <param name="assembliesLoaded">The assemblies loaded.</param>
        /// <param name="loadAssemblies">The load assemblies.</param>
        /// <returns></returns>
        private static MethodDefinition BuildResolveMethod(ICloakContext context, AssemblyDefinition assembly, FieldReference assemblyLock, FieldReference assembliesLoaded, MethodReference loadAssemblies)
        {
#if USE_FRIENDLY_NAMING
            MethodDefinition method = new MethodDefinition("ResolveAssembly",
                                   MethodAttributes.Public | MethodAttributes.HideBySig, assembly.Import(typeof(Assembly)));
#else
            MethodDefinition method = new MethodDefinition(context.NameManager.GenerateName(NamingTable.Method),
                                   MethodAttributes.Public | MethodAttributes.HideBySig, assembly.Import(typeof(Assembly)));
#endif

            //Declare the resource parameter
            method.Parameters.Add(new ParameterDefinition("sender", Mono.Cecil.ParameterAttributes.None, assembly.Import(typeof(object))));
            method.Parameters.Add(new ParameterDefinition(assembly.Import(typeof(ResolveEventArgs))));
            
            method.Body.InitLocals = true;
            method.Body.MaxStackSize = 2;
            method.AddLocal(assembly, typeof(Assembly[])); //currentAssemblies
            method.AddLocal(assembly, typeof(Assembly));   //a
            method.AddLocal(assembly, typeof(Assembly));   //temp assembly
            method.AddLocal(assembly, typeof (object));    //temp object
            var tempBool = method.AddLocal(assembly, typeof (bool)); //temp bool
            var tempAssemblyArray = method.AddLocal(assembly, typeof(Assembly[])); //temp assembly array
            var tempInt = method.AddLocal(assembly, typeof (int)); //temp int
        
            //Get the il builder
            var il = method.Body.GetILProcessor();

            //Inject the anti reflector code
            InjectAntiReflectorCode(il, il.Create(OpCodes.Nop));
#if VERBOSE_OUTPUT
            DebugLine(assembly, il, "Resolving");
#endif

            //Start a lock
            il.Append(OpCodes.Ldarg_0);
            il.Append(il.Create(OpCodes.Ldfld, assemblyLock));
            il.Append(OpCodes.Dup);
            il.Append(OpCodes.Stloc_3);
            var monitorEnter = assembly.Import(typeof (Monitor).GetMethod("Enter", new[] {typeof (object)}));
            il.Append(il.Create(OpCodes.Call, monitorEnter));
            il.Append(OpCodes.Nop);
            var tryStart = il.Create(OpCodes.Nop);
            il.Append(tryStart);
            //Check if the assemblies are loaded
            il.Append(OpCodes.Ldarg_0);
            il.Append(il.Create(OpCodes.Ldfld, assembliesLoaded));
            il.Append(il.Create(OpCodes.Stloc_S, tempBool));
            il.Append(il.Create(OpCodes.Ldloc_S, tempBool));

            //If it is set, skip to searching the current appdomain
            var startSearchingCurrentAppDomain = il.Create(OpCodes.Nop);
            il.Append(il.Create(OpCodes.Brtrue_S, startSearchingCurrentAppDomain));
            il.Append(OpCodes.Nop);
            il.Append(OpCodes.Ldarg_0);
            il.Append(OpCodes.Ldc_I4_1);
            il.Append(il.Create(OpCodes.Stfld, assembliesLoaded));
            il.Append(OpCodes.Ldarg_0);
            il.Append(il.Create(OpCodes.Call, loadAssemblies));
            il.Append(OpCodes.Nop);
            il.Append(OpCodes.Nop);
            il.Append(startSearchingCurrentAppDomain);
            //After the finally
            var afterFinally = il.Create(OpCodes.Nop);
            //Exit the finally
            il.Append(il.Create(OpCodes.Leave_S, afterFinally));
            //We're in the finally now
            var finallyStart = il.Create(OpCodes.Ldloc_3);
            il.Append(finallyStart);
            var monitorExit = assembly.Import(typeof (Monitor).GetMethod("Exit", new[] {typeof (object)}));
            il.Append(il.Create(OpCodes.Call, monitorExit));
            il.Append(OpCodes.Nop);
            il.Append(OpCodes.Endfinally);
            il.Append(afterFinally);

            //Get the current domains assemblies
            var currentDomain = assembly.Import(typeof (AppDomain).GetProperty("CurrentDomain").GetGetMethod());
            il.Append(il.Create(OpCodes.Call, currentDomain));
            var getAssemblies = assembly.Import(typeof (AppDomain).GetMethod("GetAssemblies"));
            il.Append(il.Create(OpCodes.Callvirt, getAssemblies));
            il.Append(OpCodes.Stloc_0);
            il.Append(OpCodes.Nop);

            //Lets start a loop in lieu of foreach
            il.Append(OpCodes.Ldloc_0);
            il.Append(il.Create(OpCodes.Stloc_S, tempAssemblyArray));
            il.Append(OpCodes.Ldc_I4_0);
            il.Append(il.Create(OpCodes.Stloc_S, tempInt));

            //Loop Condition
            var loopCondition = il.Create(OpCodes.Ldloc_S, tempInt);
            il.Append(il.Create(OpCodes.Br_S, loopCondition));
//.........这里部分代码省略.........

        /// <summary>
        /// Generates a method body for the <paramref name="targetMethod"/>.
        /// </summary>
        /// <param name="originalMethod">The method currently being intercepted.</param>
        /// <param name="targetMethod">The target method that will contain the new method body.</param>
        public void Emit(MethodInfo originalMethod, MethodDefinition targetMethod)
        {
            var invocationInfo = targetMethod.AddLocal<IInvocationInfo>();
            invocationInfo.Name = "___invocationInfo___";

            // Emit the code to generate the IInvocationInfo instance
            // and save it into the invocationInfo local variable
            if (InvocationInfoEmitter != null)
                InvocationInfoEmitter.Emit(originalMethod, targetMethod, invocationInfo);

            var declaringType = targetMethod.DeclaringType;
            var module = declaringType.Module;
            var proxyType = module.ImportType<IProxy>();
            var getInterceptorMethod = module.ImportMethod("get_Interceptor", typeof (IProxy));
            var interceptor = targetMethod.AddLocal<IInterceptor>();
            var arguments = targetMethod.AddLocal<object[]>();

            // if (!(this is IProxy))
            var IL = targetMethod.GetILGenerator();
            IL.Emit(OpCodes.Ldarg_0);
            IL.Emit(OpCodes.Isinst, proxyType);

            var noImplementationFound = IL.Create(OpCodes.Nop);
            IL.Emit(OpCodes.Brfalse, noImplementationFound);

            var endLabel = IL.Create(OpCodes.Nop);
            EmitGetInterceptorInstruction(IL, proxyType, getInterceptorMethod);
            IL.Emit(OpCodes.Stloc, interceptor);

            //If (interceptor == null)
            //    throw a not implemented exception here
            IL.Emit(OpCodes.Ldloc, interceptor);
            IL.Emit(OpCodes.Brfalse, noImplementationFound);

            // var returnValue = interceptor.Intercept(info);
            var voidType = module.ImportType(typeof (void));
            var interceptMethod = module.ImportMethod<IInterceptor>("Intercept", typeof (IInvocationInfo));
            IL.Emit(OpCodes.Ldloc, interceptor);
            IL.Emit(OpCodes.Ldloc, invocationInfo);
            IL.Emit(OpCodes.Callvirt, interceptMethod);

            // Save the ref arguments
            var parameters = from ParameterDefinition param in targetMethod.Parameters
                select param;

            // Determine the return type
            var returnType = targetMethod.ReturnType != null
                ? targetMethod.ReturnType.ReturnType
                : voidType;

            IL.PackageReturnValue(module, returnType);

            SaveRefArguments(IL, parameters, invocationInfo, arguments);
            IL.Emit(OpCodes.Br, endLabel);

            // This code at this point will execute if no implementation
            // is found
            IL.Append(noImplementationFound);

            ImplementNotFound(IL);

            IL.Append(endLabel);
            IL.Emit(OpCodes.Ret);
        }