Method add

src/core/impl/graph/helper.cpp:452–477

}

void cg::DepOprIter::add(OperatorNodeBase* dest) {
    if (!m_owner_graph) {
        m_owner_graph = dest->owner_graph();
    } else {
        mgb_assert(
                m_owner_graph == dest->owner_graph(),
                "dest oprs belong to different graphs");
    }
    push_stack(dest);
    while (!m_stack.empty()) {
        auto&& frame = m_stack.back();
        if (frame.inp_idx == frame.nr_input + frame.nr_extra_dep) {
            m_cb(frame.opr);
            m_stack.pop_back();
        } else {
            VarNode* inp = nullptr;
            if (frame.inp_idx < frame.nr_input) {
                inp = frame.inputs[frame.inp_idx++];
            } else {
                inp = frame.extra_deps[frame.inp_idx - frame.nr_input];
                frame.inp_idx++;
            }
            push_stack(inp->owner_opr());
        }
    }
}

/* =================== InterGraphVarTransformer =================== */