private object PrepareDelegate(Type parameterType, object val)
{
Type gty1 = parameterType.GetGenericTypeDefinition();
Type[] gpty1 = parameterType.GetGenericArguments();
MethodInfo method1 = parameterType.GetMethod("Invoke");
if (val is MethodInfo)
{
MethodInfo method2 = (MethodInfo)val;
if (gas.MatchGenericMethod(method1, method2))
{
Type[] gpty2 = gas.ConstructGenericArguments(gpty1);
parameterType = gty1.MakeGenericType(gpty2);
val = Delegate.CreateDelegate(parameterType, null, method2);
return(val);
}
else
{
return(null);
}
}
else if (val is MulticastDelegate)
{
MethodInfo method2 = ((MulticastDelegate)val).GetType().GetMethod("Invoke");
if (gas.MatchGenericMethod(method1, method2))
{
return(val);
}
else
{
return(null);
}
}
else if (val is VAL)
{
VAL func = (VAL)val;
if (func.ty == VALTYPE.funccon)
{
int argc = DynamicDelegate.FuncArgc(func);
Type[] pTypes = DynamicDelegate.GetDelegateParameterTypes(parameterType);
if (argc == pTypes.Length)
{
Type[] gpty2 = gas.ConstructGenericArguments(gpty1);
if (gpty2 == null)
{
throw new HostTypeException("Generic Type is not matched on {0}", parameterType);
}
parameterType = gty1.MakeGenericType(gpty2);
return(DynamicDelegate.ToDelegate(parameterType, val));
}
return(null);
}
}
return(null);
}
private Tuple <MethodInfo, object[]> CheckParameters(MethodInfo method)
{
ParameterInfo[] parameters = method.GetParameters();
int len = parameters.Length;
object[] args2 = new object[len];
Type[] argTypes2 = new Type[len];
if (len > 0 && len < args1.Length)
{
bool isParams = Attribute.IsDefined(parameters[len - 1], typeof(ParamArrayAttribute));
if (isParams)
{
for (int i = 0; i < len - 1; i++)
{
args2[i] = args1[i];
argTypes2[i] = argTypes1[i];
}
Type ty = parameters[len - 1].ParameterType;
Array array = (Array)Activator.CreateInstance(ty, new object[] { args1.Length - len + 1 });
for (int i = 0; i < args1.Length - len + 1; i++)
{
array.SetValue(args1[len + i - 1], i);
}
args2[len - 1] = array;
argTypes2[len - 1] = ty;
goto L1;
}
}
if (len != args1.Length)
{
return(null);
}
for (int i = 0; i < len; i++)
{
args2[i] = args1[i];
argTypes2[i] = argTypes1[i];
}
L1:
GenericArguments gas = new GenericArguments();
for (int i = 0; i < len; i++)
{
if (!HostOperation.IsCompatibleType(parameters[i].ParameterType, args2[i], argTypes2[i]))
{
if (args2[i] == null && argTypes2[i] == null)
{
return(null);
}
object temp = gas.CheckCompatibleType(parameters[i], args2[i], argTypes2[i]);
if (temp == null)
{
return(null);
}
args2[i] = temp;
}
}
if (method.IsGenericMethod && method.IsGenericMethodDefinition)
{
Type[] gaty2 = gas.ConstructGenericArguments(method.GetGenericArguments());
method = method.MakeGenericMethod(gaty2);
}
return(Tuple.Create(method, args2));
}