/* * Copyright (C) 2012, 2016 Apple Inc. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ #pragma once #include <wtf/NotFound.h> #include <wtf/PrintStream.h> namespace JSC { struct MatchResult; #if CPU(ADDRESS32) using EncodedMatchResult = uint64_t; #else struct EncodedMatchResult { size_t start; size_t end; }; #endif struct MatchResult { MatchResult() : start(WTF::notFound) , end(0) { } ALWAYS_INLINE MatchResult(size_t start, size_t end) : start(start) , end(end) { } #if CPU(ADDRESS32) ALWAYS_INLINE MatchResult(EncodedMatchResult match) : start(bitwise_cast<MatchResult>(match).start) , end(bitwise_cast<MatchResult>(match).end) { } #else ALWAYS_INLINE MatchResult(EncodedMatchResult match) : start(match.start) , end(match.end) { } #endif ALWAYS_INLINE static MatchResult failed() { return MatchResult(); } ALWAYS_INLINE explicit operator bool() const { return start != WTF::notFound; } ALWAYS_INLINE bool empty() { return start == end; } void dump(PrintStream&) const; size_t start; size_t end; }; static_assert(sizeof(EncodedMatchResult) == 2 * sizeof(size_t), "https://bugs.webkit.org/show_bug.cgi?id=198518#c11"); static_assert(sizeof(MatchResult) == sizeof(EncodedMatchResult), "Match result and EncodedMatchResult should be the same size"); } // namespace JSC