mojo/public/mojom/base/byte_string.mojom

// Copyright 2021 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

module mojo_base.mojom;

// A ByteString is an array of binary data that in C++ is typemapped to a
// std::string. Mojo string primitives should be well-formed UTF-8, but
// many C++ APIs store binary data in std::string rather than
// std::vector<uint8_t>. The ByteString type is an adaptor that transfers
// binary std::string data using an array<uint8> over Mojo. If creating a
// new API, do not use this; instead, store binary data in
// std::vector<uint8_t> rather than std::string, and use array<uint8> for
// Mojo APIs.
struct ByteString {
  array<uint8> data;
};