That is sort of hard to determine. We don't get very many large projects that cannot be split up. You may browse code-length if you'd like, or you may post your question anyway and we'll determine if it's too long (or possibly if an automatic flag is raised). The worst that can happen is that it'll attract little attention, but such questions in and of themselves are not subject to closure.
Do be aware that Higher-level architecture and design of software systems are off-topic here, assuming that your code fits into that category. If so, it'll best belong on Programmers SE. If you want to make sure, go ahead and post your code, and it can be migrated if the community deems it off-topic.
