blob: ecee4e9dafea0f77c94a327e3d1a456e520d743a [file] [log] [blame]
/*
* 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 {
typedef uint64_t EncodedMatchResult;
struct MatchResult {
MatchResult()
: start(WTF::notFound)
, end(0)
{
}
ALWAYS_INLINE MatchResult(size_t start, size_t end)
: start(start)
, end(end)
{
}
explicit ALWAYS_INLINE MatchResult(EncodedMatchResult encoded)
{
union u {
uint64_t encoded;
struct s {
size_t start;
size_t end;
} split;
} value;
value.encoded = encoded;
start = value.split.start;
end = value.split.end;
}
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;
};
} // namespace JSC