private void AddUnaryMethod(TypeBuilder typeBuilder, RpcServiceDescription serviceDescription, RpcMethodDescription methodDescription)
{
var args = methodDescription.RpcMethod.GetParameters();
var methodBuilder = typeBuilder.DefineMethod(
methodDescription.RpcMethodName,
MethodAttributes.Public | MethodAttributes.Virtual,
methodDescription.RpcMethod.ReturnType,
(from arg in args select arg.ParameterType).ToArray()
);
var il = methodBuilder.GetILGenerator();
il.Emit(OpCodes.Ldarg_0);
il.Emit(OpCodes.Ldarg_1);
il.Emit(OpCodes.Ldstr, serviceDescription.RpcServiceName);
il.Emit(OpCodes.Ldstr, methodDescription.RpcMethodName);
il.Emit(OpCodes.Ldarg_2);
il.Emit(
OpCodes.Call,
_unaryMethodToCall.MakeGenericMethod(new [] {
methodDescription.RpcMethod.GetParameters()[0].ParameterType,
methodDescription.RpcMethod.ReturnType.GetGenericArguments()[0]
})
);
il.Emit(OpCodes.Ret);
typeBuilder.DefineMethodOverride(methodBuilder, methodDescription.RpcMethod);
}
private void AddMethods(TypeBuilder typeBuilder, Type serviceType)
{
var serviceDescription = new RpcServiceDescription(serviceType);
foreach (var methodDescription in serviceDescription.RpcMethods)
{
switch (methodDescription.RpcMethodType)
{
case MethodType.Unary:
this.AddUnaryMethod(typeBuilder, serviceDescription, methodDescription);
break;
case MethodType.ClientStreaming:
this.AddClientStreamingMethod(typeBuilder, serviceDescription, methodDescription);
break;
default:
throw new NotSupportedException($"Not support MethodType: {methodDescription.RpcMethodType}");
}
}
}
