content/base/src/nsTextFragmentImpl.h@44a2da4a2ab2 (annotated)
content/base/src/nsTextFragmentImpl.h
Fri, 16 Jan 2015 04:50:19 +0100
- author
- Michael Schloh von Bennewitz <michael@schloh.com>
- date
- Fri, 16 Jan 2015 04:50:19 +0100
- branch
- TOR_BUG_9701
- changeset 13
- 44a2da4a2ab2
- permissions
- -rw-r--r--
Replace accessor implementation with direct member state manipulation, by
request https://trac.torproject.org/projects/tor/ticket/9701#comment:32
| michael@0 | 1 | /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ |
| michael@0 | 2 | /* This Source Code Form is subject to the terms of the Mozilla Public |
| michael@0 | 3 | * License, v. 2.0. If a copy of the MPL was not distributed with this |
| michael@0 | 4 | * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ |
| michael@0 | 5 | |
| michael@0 | 6 | #ifndef nsTextFragmentImpl_h__ |
| michael@0 | 7 | #define nsTextFragmentImpl_h__ |
| michael@0 | 8 | |
| michael@0 | 9 | #include <stdint.h> |
| michael@0 | 10 | |
| michael@0 | 11 | template<size_t size> struct Non8BitParameters; |
| michael@0 | 12 | template<> struct Non8BitParameters<4> { |
| michael@0 | 13 | static inline size_t mask() { return 0xff00ff00; } |
| michael@0 | 14 | static inline uint32_t alignMask() { return 0x3; } |
| michael@0 | 15 | static inline uint32_t numUnicharsPerWord() { return 2; } |
| michael@0 | 16 | }; |
| michael@0 | 17 | |
| michael@0 | 18 | template<> struct Non8BitParameters<8> { |
| michael@0 | 19 | static inline size_t mask() { |
| michael@0 | 20 | static const uint64_t maskAsUint64 = 0xff00ff00ff00ff00ULL; |
| michael@0 | 21 | // We have to explicitly cast this 64-bit value to a size_t, or else |
| michael@0 | 22 | // compilers for 32-bit platforms will warn about it being too large to fit |
| michael@0 | 23 | // in the size_t return type. (Fortunately, this code isn't actually |
| michael@0 | 24 | // invoked on 32-bit platforms -- they'll use the <4> specialization above. |
| michael@0 | 25 | // So it is, in fact, OK that this value is too large for a 32-bit size_t.) |
| michael@0 | 26 | return (size_t)maskAsUint64; |
| michael@0 | 27 | } |
| michael@0 | 28 | static inline uint32_t alignMask() { return 0x7; } |
| michael@0 | 29 | static inline uint32_t numUnicharsPerWord() { return 4; } |
| michael@0 | 30 | }; |
| michael@0 | 31 | |
| michael@0 | 32 | #endif |
