mfbt/Array.h@97036ab72558
mfbt/Array.h
Tue, 06 Jan 2015 21:39:09 +0100
- author
- Michael Schloh von Bennewitz <michael@schloh.com>
- date
- Tue, 06 Jan 2015 21:39:09 +0100
- branch
- TOR_BUG_9701
- changeset 8
- 97036ab72558
- permissions
- -rw-r--r--
Conditionally force memory storage according to privacy.thirdparty.isolate;
This solves Tor bug #9701, complying with disk avoidance documented in
https://www.torproject.org/projects/torbrowser/design/#disk-avoidance.
1 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
2 /* vim: set ts=8 sts=2 et sw=2 tw=80: */
3 /* This Source Code Form is subject to the terms of the Mozilla Public
4 * License, v. 2.0. If a copy of the MPL was not distributed with this
5 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
7 /* A compile-time constant-length array with bounds-checking assertions. */
9 #ifndef mozilla_Array_h
10 #define mozilla_Array_h
12 #include "mozilla/Assertions.h"
13 #include "mozilla/Attributes.h"
15 #include <stddef.h>
17 namespace mozilla {
19 template<typename T, size_t Length>
20 class Array
21 {
22 T arr[Length];
24 public:
25 T& operator[](size_t i) {
26 MOZ_ASSERT(i < Length);
27 return arr[i];
28 }
30 const T& operator[](size_t i) const {
31 MOZ_ASSERT(i < Length);
32 return arr[i];
33 }
34 };
36 template<typename T>
37 class Array<T, 0>
38 {
39 public:
40 T& operator[](size_t i) {
41 MOZ_ASSUME_UNREACHABLE("indexing into zero-length array");
42 }
44 const T& operator[](size_t i) const {
45 MOZ_ASSUME_UNREACHABLE("indexing into zero-length array");
46 }
47 };
49 } /* namespace mozilla */
51 #endif /* mozilla_Array_h */
