Method to_json

src/core/impl/graph/cg_impl_seq.cpp:602–670

#if MGB_ENABLE_JSON
std::shared_ptr<json::Value> ComputingGraphImpl::ComputingSequence::to_json() const {
    ThinHashSet<MemAllocPlan::Chunk*> all_mem_chunk;
    VarNodeSet all_var_node;
    ThinHashSet<OperatorNodeBase*> all_opr_node;

    auto comp_seq = json::Array::make();

    for (auto i : *m_opr_seq) {
        all_opr_node.insert(i);
        for (auto j : i->output()) {
            all_var_node.insert(j);
            if (j->mem_plan().valid())
                all_mem_chunk.insert(&j->mem_plan().chunk());
        }
        comp_seq->add(json::String::make(i->id_str()));
    }

    // expand opr and var nodes that do not appear in comp seq,
    // also expand var nodes which are only used in static infer
    {
        VarNodeArray new_var_node;
        auto&& mgr = m_owner_graph->static_infer_manager_impl();
        auto check_opr_input = [&](OperatorNodeBase* opr) {
            auto update = [&](VarNode* var) {
                if (!(all_var_node.count(var))) {
                    all_var_node.insert(var);
                    new_var_node.push_back(var);
                }
            };
            for (auto i : opr->input()) {
                update(i);
            }
            for (auto&& out : opr->output()) {
                using DepType = static_infer::DepType;
                for (auto&& i : mgr.get_deps({out, DepType::SHAPE})) {
                    update(i.dest);
                }
                for (auto&& i : mgr.get_deps({out, DepType::VALUE})) {
                    update(i.dest);
                }
            }
        };
        for (auto i : all_opr_node)
            check_opr_input(i);
        while (!new_var_node.empty()) {
            auto opr = new_var_node.back()->owner_opr();
            new_var_node.pop_back();
            all_opr_node.insert(opr);
            for (auto i : opr->output()) {
                all_var_node.insert(i);
            }
            check_opr_input(opr);
        }
    }

    auto dump_node_coll = [](auto&& collection) {
        auto objptr = json::Object::make();
        auto&& obj = *objptr;