CSY/reowolf Files · testdata/parser/positive/2.pdl · Centrum Wiskunde & Informatica (CWI)

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Fix binding- and assignment-expression related typing issues.

Simpler solutions are better, so the typechecker is back to normal.
Instead we simply make sure that assignment expression is never
nested under another expression, and binding expressions may only
be nested under LogicalAnd-expressions. If only I knew why I thought
type shenanigans were a good idea in the first place...

#version 100

import std.reo;

composite main(in asend, out arecv, in bsend, out brecv, in csend, out crecv) {
    channel xo -> xi;
    channel yo -> yi;
    channel zo -> zi;
    // Every synchronous round, at most one message is sent (to determine a global order)
    new mymerger(asend, bsend, xo);
    new mymerger(csend, xi, yo);
    // If a message is sent, it is broadcast to every recipient
    new replicator(yi, {arecv, zo});
    new replicator(zi, {brecv, crecv});
}

primitive mymerger(in a, in b, out c) {
    while (true) {
        synchronous {
            if (fires(a) && !fires(b) && fires(c)) {
                put(c, get(a));
            } else if (!fires(a) && fires(b) && fires(c)) {
                put(c, get(b));
            } else {
            	assert !fires(a) && !fires(b) && !fires(c);
            }
        }
    }
}