class Rubydex::ConstantReference

static VALUE rdxr_constant_reference_document(VALUE self) {
    HandleData *data;
    void *graph = rdxi_graph_from_handle(self, &data);

    const uint64_t *uri_id = rdx_constant_reference_document(graph, data->id);
    if (uri_id == NULL) {
        rb_raise(rb_eRuntimeError, "Constant reference not found");
    }

    VALUE argv[] = {data->graph_obj, ULL2NUM(*uri_id)};
    free_u64(uri_id);

    return rb_class_new_instance(2, argv, cDocument);
}

static VALUE rdxr_constant_reference_location(VALUE self) {
    HandleData *data;
    void *graph = rdxi_graph_from_handle(self, &data);

    Location *loc = rdx_constant_reference_location(graph, data->id);
    if (loc == NULL) {
        rb_raise(rb_eRuntimeError, "Constant reference must exist for a valid id");
    }
    VALUE location = rdxi_build_location_value(loc);
    rdx_location_free(loc);
    return location;
}