Range &get_range(MemoryPool &memory_pool)
{
Range &range = left->get_range(memory_pool).dup(memory_pool);
Range &end = right->get_range(memory_pool);
range.expand(end);
return range;
}
Range &get_range(MemoryPool &memory_pool)
{
Range &range = this->range->dup(memory_pool);
Range &end = value->get_range(memory_pool);
range.expand(end);
return range;
}