1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/js/src/yarr/MatchResult.h Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,78 @@
1.4 +/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
1.5 + * vim: set ts=8 sts=4 et sw=4 tw=99:
1.6 + *
1.7 + * Copyright (C) 2012 Apple Inc. All rights reserved.
1.8 + *
1.9 + * Redistribution and use in source and binary forms, with or without
1.10 + * modification, are permitted provided that the following conditions
1.11 + * are met:
1.12 + * 1. Redistributions of source code must retain the above copyright
1.13 + * notice, this list of conditions and the following disclaimer.
1.14 + * 2. Redistributions in binary form must reproduce the above copyright
1.15 + * notice, this list of conditions and the following disclaimer in the
1.16 + * documentation and/or other materials provided with the distribution.
1.17 + *
1.18 + * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
1.19 + * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
1.20 + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
1.21 + * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR
1.22 + * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
1.23 + * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
1.24 + * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
1.25 + * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
1.26 + * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
1.27 + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
1.28 + * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
1.29 + */
1.30 +
1.31 +#ifndef yarr_MatchResult_h
1.32 +#define yarr_MatchResult_h
1.33 +
1.34 +#include "yarr/wtfbridge.h"
1.35 +
1.36 +typedef uint64_t EncodedMatchResult;
1.37 +
1.38 +struct MatchResult {
1.39 + MatchResult(int start, int end)
1.40 + : start(start)
1.41 + , end(end)
1.42 + {
1.43 + }
1.44 +
1.45 +#if !WTF_CPU_X86_64 || WTF_PLATFORM_WIN
1.46 + explicit MatchResult(EncodedMatchResult encoded)
1.47 + {
1.48 + union u {
1.49 + uint64_t encoded;
1.50 + struct s {
1.51 + int start;
1.52 + int end;
1.53 + } split;
1.54 + } value;
1.55 + value.encoded = encoded;
1.56 + start = value.split.start;
1.57 + end = value.split.end;
1.58 + }
1.59 +#endif
1.60 +
1.61 + static MatchResult failed()
1.62 + {
1.63 + return MatchResult(int(WTF::notFound), 0);
1.64 + }
1.65 +
1.66 + operator bool()
1.67 + {
1.68 + return start != int(WTF::notFound);
1.69 + }
1.70 +
1.71 + bool empty()
1.72 + {
1.73 + return start == end;
1.74 + }
1.75 +
1.76 + // strings are limited to a length of 2^28. So this is safe
1.77 + int start;
1.78 + int end;
1.79 +};
1.80 +
1.81 +#endif /* yarr_MatchResult_h */
