inline int NodeImpl::init_non_root()

in ecosystem/simple_dom.cpp [30:71]

• 40 lines of code
• 7 McCabe index (conditional complexity)

inline int NodeImpl::init_non_root(str key, str value,
                const NodeImpl* root, uint32_t flags) {
    _root = root;
    assert(root);
    _flags = flags & ~FLAG_IS_ROOT;

    assert(key.length() <= MAX_KEY_LENGTH);
    assert(value.length() <= MAX_VALUE_LENGTH);
    _k_len = key.length();
    _v_len = value.length();

    auto text_begin = root->_text_begin;
    assert(key.empty() || key.data() > text_begin);
    assert(value.empty() || value.data() > key.end());
    uint64_t koff, voff;
    switch ((key.empty() << 1) | value.empty()) {
        case 0:     // key && value
            koff = key.data() - text_begin;
            voff = value.data() - key.end();
            break;
        case 1:     // key && !value
            koff = key.data() - text_begin;
            voff = 0;
            break;
        case 2:     // !key && value
            koff = value.data() - text_begin;
            voff = 0;
            break;
        case 3:     // !key && !value
            _k_off = 0; _k_len = 0;
            _v_off = 0; _v_len = 0;
            return 0;
        default:
            assert(false);
            return -1;
    }
    assert(koff <= MAX_KEY_OFFSET);
    assert(voff <= MAX_VALUE_OFFSET);
    _k_off = koff;
    _v_off = voff;
    return 0;
}