1 // Copyright 2018 The Chromium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
4 
5 #ifndef MOJO_PUBLIC_CPP_BASE_UNGUESSABLE_TOKEN_MOJOM_TRAITS_H_
6 #define MOJO_PUBLIC_CPP_BASE_UNGUESSABLE_TOKEN_MOJOM_TRAITS_H_
7 
8 #include "base/component_export.h"
9 #include "base/unguessable_token.h"
10 #include "mojo/public/mojom/base/unguessable_token.mojom-shared.h"
11 
12 namespace mojo {
13 
14 // If base::UnguessableToken is no longer 128 bits, the logic below and the
15 // mojom::UnguessableToken type should be updated.
16 static_assert(sizeof(base::UnguessableToken) == 2 * sizeof(uint64_t),
17               "base::UnguessableToken should be of size 2 * sizeof(uint64_t).");
18 
19 template <>
COMPONENT_EXPORT(MOJO_BASE_MOJOM)20 struct COMPONENT_EXPORT(MOJO_BASE_MOJOM)
21     StructTraits<mojo_base::mojom::UnguessableTokenDataView,
22                  base::UnguessableToken> {
23   static uint64_t high(const base::UnguessableToken& token) {
24     return token.GetHighForSerialization();
25   }
26 
27   static uint64_t low(const base::UnguessableToken& token) {
28     return token.GetLowForSerialization();
29   }
30 
31   static bool Read(mojo_base::mojom::UnguessableTokenDataView data,
32                    base::UnguessableToken* out);
33 };
34 
35 }  // namespace mojo
36 
37 #endif  // MOJO_PUBLIC_CPP_BASE_UNGUESSABLE_TOKEN_MOJOM_TRAITS_H_