void LoadInputParametersIntoLocals(ParameterInfo[] parameters, LocalBuilder[] parameterLocals, ArgBuilder inputParametersArg, out int inputParameterCount)
{
inputParameterCount = 0;
for (int i = 0; i < parameterLocals.Length; i++)
{
if (ServiceReflector.FlowsIn(parameters[i]))
{
Type parameterType = parameterLocals[i].LocalType;
ilg.LoadArrayElement(inputParametersArg, inputParameterCount);
if (!parameterType.IsValueType)
{
ilg.ConvertValue(TypeOfObject, parameterType);
ilg.Store(parameterLocals[i]);
}
else
{
ilg.Dup();
ilg.If();
ilg.ConvertValue(TypeOfObject, parameterType);
ilg.Store(parameterLocals[i]);
ilg.Else();
ilg.Pop();
ilg.LoadZeroValueIntoLocal(parameterType, parameterLocals[i]);
ilg.EndIf();
}
inputParameterCount++;
}
}
}
private void CreateInArgs()
{
var parameters = MethodBase.GetParameters();
int inCount = 0;
foreach (var param in parameters)
{
if (ServiceReflector.FlowsIn(param))
{
inCount++;
}
}
if (inCount == Args.Length) // All parameters are InArgs so do nothing and fallback to returning Args
{
return;
}
_inArgs = new object[inCount];
int inPos = 0;
for (int argPos = 0; argPos < parameters.Length; argPos++)
{
if (ServiceReflector.FlowsIn(parameters[argPos]))
{
_inArgs[inPos] = Args[argPos];
inPos++;
}
}
Fx.Assert((inPos - 1) != (inCount), $"Incorrect number of arguments put into _inArgs array, expected {inCount} and copied {inPos - 1}");
}
void LoadZeroValueInputParametersIntoLocals(ParameterInfo[] parameters, LocalBuilder[] parameterLocals)
{
for (int i = 0; i < parameterLocals.Length; i++)
{
if (ServiceReflector.FlowsIn(parameters[i]))
{
ilg.LoadZeroValueIntoLocal(parameterLocals[i].LocalType, parameterLocals[i]);
}
}
}
internal static InvokeDelegate GenerateInvokeDelegate(MethodInfo method, out int inputParameterCount, out int outputParameterCount)
{
ParameterInfo[] parameters = method.GetParameters();
bool returnsValue = method.ReturnType != typeof(void);
int paramCount = parameters.Length;
var inputParamPositions = new List <int>();
var outputParamPositions = new List <int>();
for (int i = 0; i < parameters.Length; i++)
{
if (ServiceReflector.FlowsIn(parameters[i]))
{
inputParamPositions.Add(i);
}
if (ServiceReflector.FlowsOut(parameters[i]))
{
outputParamPositions.Add(i);
}
}
int[] inputPos = inputParamPositions.ToArray();
int[] outputPos = outputParamPositions.ToArray();
inputParameterCount = inputPos.Length;
outputParameterCount = outputPos.Length;
// TODO: Replace with expression to remove performance cost of calling delegate.Invoke.
InvokeDelegate lambda = delegate(object target, object[] inputs, object[] outputs)
{
object[] paramsLocal = null;
if (paramCount > 0)
{
paramsLocal = new object[paramCount];
for (int i = 0; i < inputPos.Length; i++)
{
paramsLocal[inputPos[i]] = inputs[i];
}
}
object result = null;
try
{
if (returnsValue)
{
result = method.Invoke(target, paramsLocal);
}
else
{
method.Invoke(target, paramsLocal);
}
}
catch (TargetInvocationException tie)
{
ExceptionDispatchInfo.Capture(tie.InnerException).Throw();
}
for (int i = 0; i < outputPos.Length; i++)
{
Debug.Assert(paramsLocal != null);
outputs[i] = paramsLocal[outputPos[i]];
}
return(result);
};
return(lambda);
}
