Method kv

fdbclient/RYWIterator.cpp:74–92

}

const KeyValueRef* RYWIterator::kv(Arena& arena) {
	if (is_unreadable() && !bypassUnreadable)
		throw accessed_unreadable();

	if (writes.is_unmodified_range()) {
		return cache.kv(arena);
	}

	auto result = (writes.is_independent() || cache.is_empty_range())
	                  ? WriteMap::coalesceUnder(writes.op(), Optional<ValueRef>(), arena)
	                  : WriteMap::coalesceUnder(writes.op(), cache.kv(arena)->value, arena);

	if (!result.value.present()) {
		// Key is now deleted, which can happen because of CompareAndClear.
		return nullptr;
	}
	temp = KeyValueRef(writes.beginKey().assertRef(), result.value.get());
	return &temp;
}

RYWIterator& RYWIterator::operator++() {
	if (end_key_cmp <= 0)