void WaitPhase::calculate(EvalContext context)
{
if (context.ib()->rule_exec->phase == m_data->phase) {
children().back()->eval(context);
forward(children().back());
}
}
void FinishPhase::calculate(EvalContext context)
{
map_calculate(children().back(), context);
if (context.ib()->rule_exec->phase == m_data->phase) {
finish();
}
}
void Var::calculate(EvalContext context)
{
Value value;
bool time_to_finish = false;
ib_rule_phase_num_t current_phase = context.ib()->rule_exec->phase;
ib_rule_phase_num_t initial_phase = m_data->source.initial_phase();
ib_rule_phase_num_t finish_phase = m_data->source.final_phase();
if (
initial_phase != IB_PHASE_NONE &&
current_phase < initial_phase
) {
// Nothing to do, yet.
return;
}
if (
m_data->wait_phase != IB_PHASE_NONE &&
current_phase < m_data->wait_phase
) {
// User wants us to do nothing, yet.
return;
}
if (
finish_phase != IB_PHASE_NONE &&
finish_phase <= current_phase
) {
// Var says it's done.
time_to_finish = true;
}
if (
m_data->final_phase != IB_PHASE_NONE &&
m_data->final_phase <= current_phase
) {
// Users says var is done.
time_to_finish = true;
}
if (is_aliased()) {
if (time_to_finish) {
finish();
}
return;
}
try {
value = m_data->source.get(context.var_store());
}
catch (enoent) {
return;
}
if (
value.is_dynamic() ||
value.type() != Value::LIST
) {
add_value(value);
finish();
}
else {
alias(value.value_as_list<Value>());
if (time_to_finish) {
finish();
}
}
}