public static bool Enter( FilterOperationField field, ObjectFieldNode node, IQueryableFilterVisitorContext context, [NotNullWhen(true)] out ISyntaxVisitorAction?action) { if (field.Operation.Kind == FilterOperationKind.ArraySome || field.Operation.Kind == FilterOperationKind.ArrayNone || field.Operation.Kind == FilterOperationKind.ArrayAll) { if (!field.Operation.IsNullable && node.Value.IsNull()) { context.ReportError( ErrorHelper.CreateNonNullError(field, node, context)); action = SyntaxVisitor.Skip; return(true); } MemberExpression nestedProperty = Expression.Property( context.GetInstance(), field.Operation.Property); context.PushInstance(nestedProperty); Type closureType = GetTypeFor(field.Operation); if (node.Value.IsNull()) { context.AddIsNullClosure(closureType); action = SyntaxVisitor.SkipAndLeave; } else { context.AddClosure(closureType); action = SyntaxVisitor.Continue; } return(true); } action = null; return(false); }