private static async ValueTask <object?> ResolveManyNode(
IResolverContext context,
IIdSerializer serializer)
{
if (context.ArgumentKind(Ids) == ValueKind.List)
{
ListValueNode list = context.ArgumentLiteral <ListValueNode>(Ids);
Task <object?>[] tasks = ArrayPool <Task <object?> > .Shared.Rent(list.Items.Count);
var result = new object?[list.Items.Count];
try
{
for (var i = 0; i < list.Items.Count; i++)
{
context.RequestAborted.ThrowIfCancellationRequested();
// it is guaranteed that this is always a string literal.
StringValueNode nodeId = (StringValueNode)list.Items[i];
IdValue deserializedId = serializer.Deserialize(nodeId.Value);
NameString typeName = deserializedId.TypeName;
context.SetLocalValue(NodeId, nodeId.Value);
context.SetLocalValue(InternalId, deserializedId.Value);
context.SetLocalValue(InternalType, typeName);
context.SetLocalValue(WellKnownContextData.IdValue, deserializedId);
tasks[i] =
context.Schema.TryGetType <ObjectType>(typeName, out ObjectType? type) &&
type.ContextData.TryGetValue(NodeResolver, out var o) &&
o is FieldResolverDelegate resolver
? resolver.Invoke(context).AsTask()
: _nullTask;
}
for (var i = 0; i < list.Items.Count; i++)
{
context.RequestAborted.ThrowIfCancellationRequested();
Task <object?> task = tasks[i];
if (task.IsCompleted)
{
if (task.Exception is null)
{
result[i] = task.Result;
}
else
{
result[i] = null;
ReportError(context, i, task.Exception);
}
}
else
{
try
{
result[i] = await task;
}
catch (Exception ex)
{
result[i] = null;
ReportError(context, i, ex);
}
}
}
return(result);
}
finally
{
ArrayPool <Task <object?> > .Shared.Return(tasks);
}
}
else
{
var result = new object?[1];
result[0] = await ResolveSingleNode(context, serializer, Ids);
return(result);
}
}
