Function serialize_node

example/cacheHierarchy/fkYAML/node.hpp:10878–11037

@brief Recursively serialize each Node object. @param node A Node object to be serialized. @param cur_indent The current indent width @param str A string to hold serialization result.

    /// @param cur_indent The current indent width
    /// @param str A string to hold serialization result.
    void serialize_node(const BasicNodeType& node, const uint32_t cur_indent, std::string& str) {
        switch (node.get_type()) {
        case node_type::SEQUENCE:
            if (node.size() == 0) {
                str += "[]\n";
                return;
            }
            for (const auto& seq_item : node) {
                insert_indentation(cur_indent, str);
                str += "-";

                const bool is_appended = try_append_alias(seq_item, true, str);
                if (is_appended) {
                    str += "\n";
                    continue;
                }

                try_append_anchor(seq_item, true, str);
                try_append_tag(seq_item, true, str);

                const bool is_scalar = seq_item.is_scalar();
                if (is_scalar) {
                    str += " ";
                    serialize_node(seq_item, cur_indent, str);
                    str += "\n";
                    continue;
                }

                const bool is_empty = seq_item.empty();
                if (!is_empty) {
                    str += "\n";
                    serialize_node(seq_item, cur_indent + 2, str);
                    continue;
                }

                // an empty sequence or mapping
                if (seq_item.is_sequence()) {
                    str += " []\n";
                }
                else /*seq_item.is_mapping()*/ {
                    str += " {}\n";
                }
            }
            break;
        case node_type::MAPPING:
            if (node.size() == 0) {
                str += "{}\n";
                return;
            }
            for (auto itr : node.map_items()) {
                insert_indentation(cur_indent, str);

                // serialize a mapping key node.
                const auto& key_node = itr.key();

                bool is_appended = try_append_alias(key_node, false, str);
                if (is_appended) {
                    // The trailing white space is necessary since anchor names can contain a colon (:) at its end.