Files @ 85419b0950c7
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Location: CSY/reowolf/testdata/parser/positive/3.pdl - annotation

MH
Rewrote typing to use indices.

Currently it is slower than before, because we do a HashMap lookup
followed up by actually using the index. But it serves as the basis
for a faster type inferencer.

The main goal, however, is to fix the manner in which polymorph
types are determined. The typing queue of functions still needs to
correctly write this data to the type table.
#version 100

import std.reo;

composite main(in ai, out ao, in bi, out bo, in ci, out co, in di, out do) {
    // Three parts:
    channel xo -> xi;
    {
        channel afo -> aii;
        channel bfo -> bii;
        channel cfo -> cii;
        channel dfo -> dii;
        // Part 1. Collect all in msgs.
        new fifo(ai, afo, null);
        new fifo(bi, bfo, null);
        new fifo(ci, cfo, null);
        new fifo(di, dfo, null);
        // Part 2. Compute maximum.
        new computeMax(aii, bii, cii, dii, xo);
    }
    // Part 3. Send maximum to all out msgs, and repeat.
    {
        channel xxo -> xxi;
        channel xxxo -> xxxi;
        new replicator(xi, xxo, ao);
        new replicator(xxi, xxxo, bo);
        new replicator(xxxi, co, do);
    }
}

primitive computeMax(in a, in b, in c, in d, out x) {
	while (true) {
		synchronous {
            if (fires(a) && fires(b) && fires(c) && fires(d) && fires(x)) {
            	msg aa = get(a);
            	msg bb = get(b);
            	msg cc = get(c);
            	msg dd = get(d);
            	uint16_t aaa = aa[0] & aa[1] << 8;
                uint16_t bbb = bb[0] & bb[1] << 8;
                uint16_t ccc = cc[0] & cc[1] << 8;
                uint16_t ddd = dd[0] & dd[1] << 8;
                // broadcast message with highest header
                uint16_t max = aaa;
                if (bbb > max) max = bbb;
                if (ccc > max) max = ccc;
                if (ddd > max) max = ddd;
                if (max == aaa) put(x, aa);
                else if (max == bbb) put(x, bb);
                else if (max == ccc) put(x, cc);
                else if (max == ddd) put(x, dd);
            } else {
	            assert !fires(a) && !fires(b) && !fires(c) && !fires(d) && !fires(x);
            }
        }
    }
}