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/****************************************************************************
**
** Copyright (C) 2014 Digia Plc and/or its subsidiary(-ies).
** Contact: http://www.qt-project.org/legal
**
** This file is part of the QtQml module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL21$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and Digia. For licensing terms and
** conditions see http://qt.digia.com/licensing. For further information
** use the contact form at http://qt.digia.com/contact-us.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 2.1 or version 3 as published by the Free
** Software Foundation and appearing in the file LICENSE.LGPLv21 and
** LICENSE.LGPLv3 included in the packaging of this file. Please review the
** following information to ensure the GNU Lesser General Public License
** requirements will be met: https://www.gnu.org/licenses/lgpl.html and
** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Digia gives you certain additional
** rights. These rights are described in the Digia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** $QT_END_LICENSE$
**
****************************************************************************/
#include "qv4regexp_p.h"
#include "qv4engine_p.h"
#include "qv4scopedvalue_p.h"
#include "qv4mm_p.h"
using namespace QV4;
RegExpCache::~RegExpCache()
{
for (RegExpCache::Iterator it = begin(), e = end();
it != e; ++it)
it.value()->cache = 0;
clear();
}
DEFINE_MANAGED_VTABLE(RegExp);
uint RegExp::match(const QString &string, int start, uint *matchOffsets)
{
if (!isValid())
return JSC::Yarr::offsetNoMatch;
WTF::String s(string);
#if ENABLE(YARR_JIT)
if (!jitCode().isFallBack() && jitCode().has16BitCode())
return uint(jitCode().execute(s.characters16(), start, s.length(), (int*)matchOffsets).start);
#endif
return JSC::Yarr::interpret(byteCode().get(), s.characters16(), string.length(), start, matchOffsets);
}
Heap::RegExp *RegExp::create(ExecutionEngine* engine, const QString& pattern, bool ignoreCase, bool multiline)
{
RegExpCacheKey key(pattern, ignoreCase, multiline);
RegExpCache *cache = engine->regExpCache;
if (cache) {
if (Heap::RegExp *result = cache->value(key))
return result;
}
Scope scope(engine);
Scoped<RegExp> result(scope, engine->memoryManager->alloc<RegExp>(engine, pattern, ignoreCase, multiline));
if (!cache)
cache = engine->regExpCache = new RegExpCache;
result->d()->cache = cache;
cache->insert(key, result->d());
return result->d();
}
Heap::RegExp::RegExp(ExecutionEngine* engine, const QString &pattern, bool ignoreCase, bool multiline)
: pattern(pattern)
, ignoreCase(ignoreCase)
, multiLine(multiline)
{
const char* error = 0;
JSC::Yarr::YarrPattern yarrPattern(WTF::String(pattern), ignoreCase, multiline, &error);
if (error)
return;
subPatternCount = yarrPattern.m_numSubpatterns;
byteCode = JSC::Yarr::byteCompile(yarrPattern, engine->bumperPointerAllocator);
#if ENABLE(YARR_JIT)
if (!yarrPattern.m_containsBackreferences && engine->iselFactory->jitCompileRegexps()) {
JSC::JSGlobalData dummy(engine->regExpAllocator);
JSC::Yarr::jitCompile(yarrPattern, JSC::Yarr::Char16, &dummy, jitCode);
}
#endif
}
Heap::RegExp::~RegExp()
{
if (cache) {
RegExpCacheKey key(this);
cache->remove(key);
}
}
void RegExp::markObjects(Heap::Base *that, ExecutionEngine *e)
{
Q_UNUSED(that);
Q_UNUSED(e);
}
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