static void append_final_pack_state(Branch* branch)
{
TermList inputs;
get_list_of_state_outputs(branch, branch->length(), &inputs);
Term* term = apply(branch, FUNCS.pack_state, inputs);
term->setBoolProp("final", true);
}
void branch_update_existing_pack_state_calls(Branch* branch)
{
if (branch->stateType == NULL) {
// No state type, make sure there's no pack_state call.
// TODO: Handle this case properly (should search and destroy an existing pack_state call)
return;
}
int stateOutputIndex = branch->length() - 1 - find_state_output(branch)->index;
for (int i=0; i < branch->length(); i++) {
Term* term = branch->get(i);
if (term == NULL)
continue;
if (term->function == FUNCS.pack_state) {
// Update the inputs for this pack_state call
TermList inputs;
get_list_of_state_outputs(branch, i, &inputs);
set_inputs(term, inputs);
}
if (term->function == FUNCS.exit_point) {
// Check if we need to insert a pack_state call
Term* existing = term->input(stateOutputIndex);
if (existing == NULL || existing->function != FUNCS.pack_state) {
TermList inputs;
get_list_of_state_outputs(branch, i, &inputs);
if (inputs.length() != 0) {
Term* pack_state = apply(branch, FUNCS.pack_state, inputs);
move_before(pack_state, term);
set_input(term, stateOutputIndex + 1, pack_state);
// Advance i to compensate for the term just added
i++;
}
}
}
}
}
Term* branch_add_pack_state(Branch* branch)
{
TermList inputs;
get_list_of_state_outputs(branch, branch->length(), &inputs);
// Don't create anything if there are no state outputs
if (inputs.length() == 0)
return NULL;
return apply(branch, FUNCS.pack_state, inputs);
}
