Examples with TIMELESS nars.time.Tense.TIMELESS used on opensource projects

Example 1 with TIMELESS

use of nars.time.Tense.TIMELESS in project narchy by automenta.

the class DeriveTime method solveMerged.

@Nullable
Function<long[], Term> solveMerged(ArrayHashSet<Event> solutions, int dur) {
    int ss = solutions.size();
    // callee will use the only solution by default
    if (ss <= 1)
        return null;
    SortedSetMultimap<Term, LongLongPair> m = MultimapBuilder.hashKeys(ss).treeSetValues().build();
    solutions.forEach(x -> {
        long w = x.when();
        if (w != TIMELESS)
            m.put(x.id, PrimitiveTuples.pair(w, w));
    });
    int ms = m.size();
    switch(ms) {
        case 0:
            return null;
        case 1:
            Map.Entry<Term, LongLongPair> ee = m.entries().iterator().next();
            LongLongPair ww = ee.getValue();
            long s = ww.getOne();
            long e = ww.getTwo();
            return (w) -> {
                w[0] = s;
                w[1] = e;
                return ee.getKey();
            };
    }
    FasterList<Pair<Term, long[]>> choices = new FasterList(ms);
    // coalesce adjacent events
    m.asMap().forEach((t, cw) -> {
        int cws = cw.size();
        if (cws > 1) {
            long[][] ct = new long[cws][2];
            int i = 0;
            for (LongLongPair p : cw) {
                long[] cc = ct[i++];
                cc[0] = p.getOne();
                cc[1] = p.getTwo();
            }
            // TODO more complete comparison
            long[] prev = ct[0];
            for (int j = 1; j < cws; j++) {
                long[] next = ct[j];
                if (prev[0] == ETERNAL) {
                    assert (j == 1);
                    assert (ct[0][0] == ETERNAL);
                    // ignore eternal solution amongst other temporal solutions
                    ct[0] = null;
                } else if (Math.abs(prev[1] - next[0]) <= dur) {
                    // stretch
                    prev[1] = next[1];
                    ct[j] = null;
                    continue;
                }
                prev = next;
            }
            for (int j = 0; j < cws; j++) {
                long[] nn = ct[j];
                if (nn != null)
                    choices.add(pair(t, nn));
            }
        } else {
            LongLongPair f = ((SortedSet<LongLongPair>) cw).first();
            choices.add(pair(t, new long[] { f.getOne(), f.getTwo() }));
        }
    });
    if (choices.size() > 1) {
        // random fallback
        return (w) -> {
            Pair<Term, long[]> pp = choices.get(d.random);
            long[] cw = pp.getTwo();
            w[0] = cw[0];
            w[1] = cw[1];
            return pp.getOne();
        };
    } else {
        Pair<Term, long[]> c = choices.get(0);
        long[] cw = c.getTwo();
        Term cct = c.getOne();
        return (w) -> {
            w[0] = cw[0];
            w[1] = cw[1];
            return cct;
        };
    }
}