/// <summary>
/// Gets table of operations for specific type.
///
/// </summary>
/// <param name="type"></param>
/// <returns></returns>
/// <remarks>
/// Considers reflection costly operation and caching is optimization. Considers types unchangeable during runtime.
/// </remarks>
public static DispatchTable GetOperations(Type type)
{
DispatchTable table;
if (!Cache.TryGetValue(type, out table))
{
var ops = DipatchTableHelper.GetAllServiceImplementations(type);
var newTable = createOperations(ops);
lock (Cache)
{
if (!Cache.TryGetValue(type, out table))
{
Cache[type] = newTable;
table = newTable;
}
}
}
return(table);
}
private static TypeBuilder GenerateProxyType(Type service)
{
var assemblyName = new AssemblyName(PREFIX + "DynamicAssembly");
AssemblyBuilder assembly = AppDomain.CurrentDomain.DefineDynamicAssembly(assemblyName, AssemblyBuilderAccess.Run);
ModuleBuilder module = assembly.DefineDynamicModule(PREFIX + "EmittedModule");
//infertype name and fix generics
string typeName = service.Name.Replace("[", String.Empty)
.Replace("]", string.Empty)
.Replace("`", string.Empty);
typeName += DateTime.Now.Ticks;
//TypeBuilder myHelloWorldType = module.DefineType(PREFIX + typeName, TypeAttributes.Public);
TypeBuilder proxy =
module.DefineType(PREFIX + typeName,
TypeAttributes.Public, typeof(Object),
new[] { service });
// Implement 'IMyInterface' interface.
proxy.AddInterfaceImplementation(service);
var methods = DipatchTableHelper.GetAllImplementations(service);
foreach (var methodInfo in methods)
{
// Define the HelloMethod of IMyInterface.
MethodBuilder myHelloMethod = proxy.DefineMethod(methodInfo.Name,
MethodAttributes.Public | MethodAttributes.Virtual,
methodInfo.ReturnType,
methodInfo.GetParameters()
.Select(x => x.ParameterType)
.ToArray());
// Generate IL for the method.
ILGenerator myMethodIL = myHelloMethod.GetILGenerator(); //TODO: make use of RPC
myMethodIL.ThrowException(typeof(Exception));
proxy.DefineMethodOverride(myHelloMethod, methodInfo);
}
return(proxy);
}
