{% macro single_ref(version, reff, human_reff) -%}
    <li class="col-md-1">
        <a href="{{url_for('.r_passage', collection=version.urn.namespace, textgroup=version.urn.textgroup, work=version.urn.work, version=version.urn.version, passage_identifier=reff)}}">{{ human_reff }}</a>
    </li>
{%- endmacro %}

{% macro reff_dict(version, reffs) -%}
    {% for human_reff, dict_or_reff in reffs.items() %}
        {% if dict_or_reff|is_str %}
            {{ single_ref(version, dict_or_reff, human_reff) }}
        {% else %}
            <ul class="level row list-unstyled">
                <li>
                    <h2>{{human_reff|i18n_citation_type}}</h2>
                    <ul class="reffs">
                        {{ reff_dict(version, dict_or_reff) }}
                    </ul>
                </li>
            </ul>
        {% endif %}
    {% endfor %}
{%- endmacro %}

{% macro hierarchical_dispatcher(version, reffs) -%}
    {{ reff_dict(version, (reffs|hierarchical_passages(version))) }}
{%- endmacro %}