# required ? hangs
#optimizer.prelude();

function f():void;

    b0 := bat.new(nil:oid);
    b0f := bat.append(b0, 0:oid);

    b1 := bat.new(nil:oid);
    bat.append(b1, 0:oid);
    b1f := bat.append(b1, 1:oid);

    b2 := bat.new(nil:int);
    bat.append(b2, 42:int);
    bat.append(b2, 23:int);
    b2f := bat.append(b2, 0:int);

    r1 := algebra.projection(b1f, b2f);
    r2 := algebra.projection(b0f, r1);
    io.print(r2);
end f;

optimizer.projectionpath("user", "f");

# hangs
#optimizer.showFlowGraph("user", "f", "test-file");

# some variable names are not shown and last argument is ignored
#optimizer.showPlan("user", "f", "");

f();