Algorithm 5 Set outbound edges with activation signal.

functionset_outbound_signals(g, n, r, s)

if $s=\mathit{None}$ then

return $\mathit{None}$

for all $\mathrm{edges}\mathrm{in}g.\mathrm{out\_edges}\left(n\right)$ do

if $\mathrm{isinstance}(s,\mathit{generator})$ then

$\mathrm{edge}.\mathrm{signal}\left(r\right)\leftarrow next\left(s\right)$

else

$\mathrm{edge}.\mathrm{signal}\left(r\right)\leftarrow s$