public ReverseProxyMethodWeaver(ReverseProxyClassWeaver classWeaver, MethodDefinition method, string name, MethodDefinition staticConstructor) : base(classWeaver, method, name, staticConstructor)
{
}
public void Execute()
{
var DynamicProxy = ModuleDefinition.FindAssembly("DynamicProxy");
if (DynamicProxy == null)
{
LogError("Could not find assembly: DynamicProxy (" + string.Join(", ", ModuleDefinition.AssemblyReferences.Select(x => x.Name)) + ")");
return;
}
var proxyAttribute = ModuleDefinition.FindType("DynamicProxy", "ProxyAttribute", DynamicProxy);
if (proxyAttribute == null)
{
throw new Exception($"{nameof(proxyAttribute)} is null");
}
var proxyForAttribute = ModuleDefinition.FindType("DynamicProxy", "ProxyForAttribute", DynamicProxy);
var doNotProxyAttribute = ModuleDefinition.FindType("DynamicProxy", "DoNotProxyAttribute", DynamicProxy);
var originalMethodAttributeConstructor = ModuleDefinition.FindConstructor(ModuleDefinition.FindType("DynamicProxy", "OriginalMethodAttribute", DynamicProxy));
var reverseProxyInterface = ModuleDefinition.FindType("DynamicProxy", "IReverseProxy", DynamicProxy);
var proxyInterface = ModuleDefinition.FindType("DynamicProxy", "IProxy", DynamicProxy);
var targetTypes = ModuleDefinition.GetAllTypes().Where(x => x.IsDefined(proxyAttribute, true) || reverseProxyInterface.IsAssignableFrom(x) || proxyInterface.IsAssignableFrom(x)).ToArray();
// Get external proxy references
var proxyFors = ModuleDefinition.Assembly.GetCustomAttributes(proxyForAttribute).Select(x => (TypeReference)x.ConstructorArguments.Single().Value).Select(x => x.Resolve()).ToArray();
targetTypes = targetTypes.Concat(proxyFors).ToArray();
var methodInfoType = ModuleDefinition.Import(typeof(MethodInfo));
var propertyInfoType = ModuleDefinition.Import(typeof(PropertyInfo));
var func2Type = ModuleDefinition.Import(typeof(Func <,>));
var action1Type = ModuleDefinition.Import(typeof(Action <>));
var objectArrayType = ModuleDefinition.Import(typeof(object[]));
var taskType = ModuleDefinition.Import(typeof(Task));
var invocationTType = ModuleDefinition.FindType("DynamicProxy", "InvocationT`1", DynamicProxy, "T");
var asyncInvocationTType = ModuleDefinition.FindType("DynamicProxy", "AsyncInvocationT`1", DynamicProxy, "T");
var invocationHandlerType = ModuleDefinition.FindType("DynamicProxy", "InvocationHandler", DynamicProxy);
var invocationHandlerIsHandlerActive = ModuleDefinition.FindMethod(invocationHandlerType, "IsHandlerActive");
var voidInvocationType = ModuleDefinition.FindType("DynamicProxy", "VoidInvocation", DynamicProxy);
var voidInvocationConstructor = ModuleDefinition.FindConstructor(voidInvocationType);
var voidAsyncInvocationType = ModuleDefinition.FindType("DynamicProxy", "VoidAsyncInvocation", DynamicProxy);
var voidAsyncInvocationConstructor = ModuleDefinition.FindConstructor(voidAsyncInvocationType);
var voidInvokeMethod = ModuleDefinition.FindMethod(invocationHandlerType, "VoidInvoke");
var asyncVoidInvokeMethod = ModuleDefinition.FindMethod(invocationHandlerType, "VoidAsyncInvoke");
var invokeTMethod = ModuleDefinition.FindMethod(invocationHandlerType, "InvokeT");
var asyncInvokeTMethod = ModuleDefinition.FindMethod(invocationHandlerType, "AsyncInvokeT");
var objectType = ModuleDefinition.Import(typeof(object));
var proxyGetInvocationHandlerMethod = ModuleDefinition.FindGetter(proxyInterface, "InvocationHandler");
var reverseProxyGetInvocationHandlerMethod = ModuleDefinition.FindGetter(reverseProxyInterface, "InvocationHandler");
var invocationType = ModuleDefinition.FindType("DynamicProxy", "Invocation", DynamicProxy);
var invocationGetArguments = ModuleDefinition.FindGetter(invocationType, "Arguments");
var invocationGetProxy = ModuleDefinition.FindGetter(invocationType, "Proxy");
var asyncTaskMethodBuilder = ModuleDefinition.Import(typeof(AsyncTaskMethodBuilder <>));
var methodFinder = ModuleDefinition.FindType("DynamicProxy.Reflection", "MethodFinder`1", DynamicProxy, "T");
var findMethod = ModuleDefinition.FindMethod(methodFinder, "FindMethod");
var findProperty = ModuleDefinition.FindMethod(methodFinder, "FindProperty");
var context = new WeaverContext
{
ModuleDefinition = ModuleDefinition,
LogWarning = LogWarning,
LogError = LogError,
LogInfo = LogInfo,
DynamicProxy = DynamicProxy,
MethodInfoType = methodInfoType,
PropertyInfoType = propertyInfoType,
Action1Type = action1Type,
AsyncInvocationTType = asyncInvocationTType,
Func2Type = func2Type,
InvocationTType = invocationTType,
ObjectArrayType = objectArrayType,
TaskType = taskType,
AsyncInvokeTMethod = asyncInvokeTMethod,
AsyncVoidInvokeMethod = asyncVoidInvokeMethod,
InvocationHandlerType = invocationHandlerType,
InvocationHandlerIsHandlerActive = invocationHandlerIsHandlerActive,
InvokeTMethod = invokeTMethod,
ObjectType = objectType,
VoidAsyncInvocationConstructor = voidAsyncInvocationConstructor,
VoidInvocationConstructor = voidInvocationConstructor,
VoidInvokeMethod = voidInvokeMethod,
ProxyGetInvocationHandlerMethod = proxyGetInvocationHandlerMethod,
ReverseProxyGetInvocationHandlerMethod = reverseProxyGetInvocationHandlerMethod,
InvocationType = invocationType,
VoidInvocationType = voidInvocationType,
VoidAsyncInvocationType = voidAsyncInvocationType,
InvocationGetArguments = invocationGetArguments,
InvocationGetProxy = invocationGetProxy,
AsyncTaskMethodBuilder = asyncTaskMethodBuilder,
MethodFinder = methodFinder,
FindMethod = findMethod,
FindProperty = findProperty,
DoNotProxyAttribute = doNotProxyAttribute,
OriginalMethodAttributeConstructor = originalMethodAttributeConstructor
};
foreach (var sourceType in targetTypes)
{
LogInfo($"Emitting proxy for {sourceType.FullName}");
ClassWeaver classWeaver;
if (sourceType.IsInterface)
{
classWeaver = new InterfaceClassWeaver(context, sourceType);
}
else if (proxyInterface.IsAssignableFrom(sourceType))
{
classWeaver = new InPlaceClassWeaver(context, sourceType);
}
else if (reverseProxyInterface.IsAssignableFrom(sourceType))
{
classWeaver = new ReverseProxyClassWeaver(context, sourceType);
}
else
{
classWeaver = new NonInterfaceClassWeaver(context, sourceType);
}
classWeaver.Execute();
}
}