Method ReserveSlots

eval/compiler/flat_expr_builder.cc:126–133

  IndexManager() : next_free_slot_(0), max_slot_count_(0) {}

  size_t ReserveSlots(size_t n) {
    size_t result = next_free_slot_;
    next_free_slot_ += n;
    if (next_free_slot_ > max_slot_count_) {
      max_slot_count_ = next_free_slot_;
    }
    return result;
  }

  size_t ReleaseSlots(size_t n) {
    next_free_slot_ -= n;