protected override object VisitIEnumerable(IEnumerableCallSite enumerableCallSite, ILEmitResolverBuilderContext argument)
{
if (enumerableCallSite.ServiceCallSites.Length == 0)
{
argument.Generator.Emit(OpCodes.Call, ServiceLookupHelpers.GetArrayEmptyMethodInfo(enumerableCallSite.ItemType));
}
else
{
// var array = new ItemType[];
// array[0] = [Create argument0];
// array[1] = [Create argument1];
// ...
argument.Generator.Emit(OpCodes.Ldc_I4, enumerableCallSite.ServiceCallSites.Length);
argument.Generator.Emit(OpCodes.Newarr, enumerableCallSite.ItemType);
for (int i = 0; i < enumerableCallSite.ServiceCallSites.Length; i++)
{
// duplicate array
argument.Generator.Emit(OpCodes.Dup);
// push index
argument.Generator.Emit(OpCodes.Ldc_I4, i);
// create parameter
ServiceCallSite parameterCallSite = enumerableCallSite.ServiceCallSites[i];
VisitCallSite(parameterCallSite, argument);
if (parameterCallSite.ServiceType.IsValueType)
{
argument.Generator.Emit(OpCodes.Unbox_Any, parameterCallSite.ServiceType);
}
// store
argument.Generator.Emit(OpCodes.Stelem, enumerableCallSite.ItemType);
}
}
return(null);
}
protected override Expression VisitIEnumerable(IEnumerableCallSite callSite, object context)
{
if (callSite.ServiceCallSites.Length == 0)
{
return(Expression.Constant(
ServiceLookupHelpers.GetArrayEmptyMethodInfo(callSite.ItemType)
.Invoke(obj: null, parameters: Array.Empty <object>())));
}
return(Expression.NewArrayInit(
callSite.ItemType,
callSite.ServiceCallSites.Select(cs =>
Convert(
VisitCallSite(cs, context),
callSite.ItemType))));
}