void core::concatenate(const bsoncxx::document::view& view) {
bson_t other;
bson_init_static(&other, view.data(), view.length());
if (_impl->is_array()) {
bson_iter_t iter;
bson_iter_init(&iter, &other);
while (bson_iter_next(&iter)) {
stdx::string_view key = _impl->next_key();
bson_append_iter(_impl->back(), key.data(), key.length(), &iter);
}
} else {
bson_concat(_impl->back(), &other);
}
}
static void doc_to_bson_t(const bsoncxx::document::view& doc, bson_t* bson) {
bson_init_static(bson, doc.data(), doc.length());
}