Function putField

fdbrpc/TokenSign.cpp:246–264

template <class FieldType, class Writer>
void putField(Optional<FieldType> const& field, Writer& wr, const char* fieldName) {
	if (!field.present())
		return;
	wr.Key(fieldName);
	auto const& value = field.get();
	static_assert(std::is_same_v<StringRef, FieldType> || std::is_same_v<FieldType, uint64_t> ||
	              std::is_same_v<FieldType, VectorRef<StringRef>>);
	if constexpr (std::is_same_v<StringRef, FieldType>) {
		wr.String(reinterpret_cast<const char*>(value.begin()), value.size());
	} else if constexpr (std::is_same_v<FieldType, uint64_t>) {
		wr.Uint64(value);
	} else {
		wr.StartArray();
		for (auto elem : value) {
			wr.String(reinterpret_cast<const char*>(elem.begin()), elem.size());
		}
		wr.EndArray();
	}
}

StringRef makeTokenPart(Arena& arena, TokenRef tokenSpec) {
	using Buffer = rapidjson::StringBuffer;