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/*
* Copyright (C) 2009 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.
*/
#ifndef RegexJIT_h
#define RegexJIT_h
#include <wtf/Platform.h>
#if ENABLE(YARR_JIT)
#include "MacroAssembler.h"
#include "RegexPattern.h"
#include <UString.h>
#include <pcre.h>
struct JSRegExp; // temporary, remove when fallback is removed.
#if PLATFORM(X86) && !COMPILER(MSVC)
#define YARR_CALL __attribute__ ((regparm (3)))
#else
#define YARR_CALL
#endif
namespace JSC {
class JSGlobalData;
class ExecutablePool;
namespace Yarr {
class RegexCodeBlock {
typedef int (*RegexJITCode)(const UChar* input, unsigned start, unsigned length, int* output) YARR_CALL;
public:
RegexCodeBlock()
: m_fallback(0)
{
}
~RegexCodeBlock()
{
if (m_fallback)
jsRegExpFree(m_fallback);
}
JSRegExp* getFallback() { return m_fallback; }
void setFallback(JSRegExp* fallback) { m_fallback = fallback; }
bool operator!() { return !m_ref.m_code.executableAddress(); }
void set(MacroAssembler::CodeRef ref) { m_ref = ref; }
int execute(const UChar* input, unsigned start, unsigned length, int* output)
{
return reinterpret_cast<RegexJITCode>(m_ref.m_code.executableAddress())(input, start, length, output);
}
private:
MacroAssembler::CodeRef m_ref;
JSRegExp* m_fallback;
};
void jitCompileRegex(JSGlobalData* globalData, RegexCodeBlock& jitObject, const UString& pattern, unsigned& numSubpatterns, const char*& error, bool ignoreCase = false, bool multiline = false);
inline int executeRegex(RegexCodeBlock& jitObject, const UChar* input, unsigned start, unsigned length, int* output, int outputArraySize)
{
if (JSRegExp* fallback = jitObject.getFallback())
return (jsRegExpExecute(fallback, input, length, start, output, outputArraySize) < 0) ? -1 : output[0];
return jitObject.execute(input, start, length, output);
}
} } // namespace JSC::Yarr
#endif
#endif // RegexJIT_h
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