void advance() {
MOZ_ASSERT(!done());
if (!descendants.empty()) {
// Currently iterating over a multiparented subtree.
descendants.popFront();
if (!descendants.empty())
return;
// Just before leaving the last child, reset the iterator to look
// at "main" phases (in PHASE_DAG_NONE) instead of multiparented
// subtree phases.
++current;
activeSlot = PHASE_DAG_NONE;
baseLevel = 0;
return;
}
if (phaseExtra[current].dagSlot != PHASE_DAG_NONE) {
// The current phase has a shared subtree. Load them up into
// 'descendants' and advance to the first child.
activeSlot = phaseExtra[current].dagSlot;
descendants = dagDescendants[activeSlot].all();
MOZ_ASSERT(!descendants.empty());
baseLevel += phaseExtra[current].depth + 1;
return;
}
++current;
}
void advance() {
MOZ_ASSERT(!done());
if (!descendants.empty()) {
descendants.popFront();
if (!descendants.empty())
return;
++current;
activeSlot = PHASE_DAG_NONE;
baseLevel = 0;
return;
}
if (phaseExtra[current].dagSlot != PHASE_DAG_NONE) {
activeSlot = phaseExtra[current].dagSlot;
descendants = dagDescendants[activeSlot].all();
MOZ_ASSERT(!descendants.empty());
baseLevel += phaseExtra[current].depth + 1;
return;
}
++current;
}