/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ /* vim: set ts=8 sts=2 et sw=2 tw=80: */ /* This Source Code Form is subject to the terms of the Mozilla Public * License, v. 2.0. If a copy of the MPL was not distributed with this * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ #ifndef nsTextFragmentImpl_h__ #define nsTextFragmentImpl_h__ #include <stdint.h> template<size_t size> struct Non8BitParameters; template<> struct Non8BitParameters<4> { static inline size_t mask() { return 0xff00ff00; } static inline uint32_t alignMask() { return 0x3; } static inline uint32_t numUnicharsPerWord() { return 2; } }; template<> struct Non8BitParameters<8> { static inline size_t mask() { static const uint64_t maskAsUint64 = 0xff00ff00ff00ff00ULL; // We have to explicitly cast this 64-bit value to a size_t, or else // compilers for 32-bit platforms will warn about it being too large to fit // in the size_t return type. (Fortunately, this code isn't actually // invoked on 32-bit platforms -- they'll use the <4> specialization above. // So it is, in fact, OK that this value is too large for a 32-bit size_t.) return (size_t)maskAsUint64; } static inline uint32_t alignMask() { return 0x7; } static inline uint32_t numUnicharsPerWord() { return 4; } }; #endif