Invercargill/src/lib/StickyPromotion.vala

namespace Invercargill {

    public abstract class StickyPromotion<T, TPromotion> : EnumerableProxy<T>, Promotion<T> {

        public abstract Enumerable<T> wrap(Enumerable<T> enumerable);
        protected abstract Enumerable<T> new_wrap(Enumerable<T> enumerable);
        public abstract bool can_wrap(GLib.Type element_type);

        public new TPromotion where(owned PredicateDelegate<T> predicate) {
            return (TPromotion)new_wrap(inner.where((owned)predicate));
        }
    
        public new TPromotion sort(owned CompareDelegate<T> compare) {
            return (TPromotion)new_wrap(inner.sort((owned)compare));
        }
    
        public new TPromotion concat(Enumerable<T> other) {
            return (TPromotion)new_wrap(inner.concat(other));
        }
    
        public new TPromotion take(int count) {
            return (TPromotion)new_wrap(inner.take(count));
        }
    
        public new TPromotion skip(int count) {
            return (TPromotion)new_wrap(inner.skip(count));
        }
    
        public new TPromotion with(T item, uint times = 1) {
            return (TPromotion)new_wrap(inner.with(item, times));
        }
    
        public new TPromotion seal() {
            return (TPromotion)new_wrap(inner.seal());
        }

        public new TPromotion cache() {
            return (TPromotion)new_wrap(inner.cache());
        }

        public new TPromotion act(ItemDelegate<T> handler) {
            return (TPromotion)new_wrap(inner.act(handler));
        }

        public new TPromotion debug_trace(owned TransformDelegate<T, string> stringifier, string additional_message = "", owned DebugOutputDelegate? output_func = null, bool formatting = true) {
            return (TPromotion)new_wrap(new TraceEnumerable<T>(this, get_info(), (owned)stringifier, additional_message, (owned)output_func, formatting));
        }

        public new TPromotion debug_type(string additional_message = "", DebugOutputDelegate? output_func = null, bool formatting = true) {
            DebugPrinter.print_enumerable_information(get_info(), additional_message, output_func, formatting);
            return (TPromotion)wrap(inner);
        }
    }

}