darling-JavaScriptCore/ftl/FTLFormattedValue.h

76 lines
2.7 KiB
C++

/*
* Copyright (C) 2013 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
#if ENABLE(FTL_JIT)
#include "DataFormat.h"
#include "FTLAbbreviatedTypes.h"
namespace JSC { namespace FTL {
// This class is mostly used for OSR; it's a way of specifying how a value is formatted
// in cases where it wouldn't have been obvious from looking at other indicators (like
// the type of the B3::Value* or the type of the DFG::Node).
class FormattedValue {
public:
FormattedValue()
: m_format(DataFormatNone)
, m_value(nullptr)
{
}
FormattedValue(DataFormat format, LValue value)
: m_format(format)
, m_value(value)
{
}
bool operator!() const
{
ASSERT((m_format == DataFormatNone) == !m_value);
return m_format == DataFormatNone;
}
DataFormat format() const { return m_format; }
LValue value() const { return m_value; }
private:
DataFormat m_format;
LValue m_value;
};
static inline FormattedValue noValue() { return FormattedValue(); }
static inline FormattedValue int32Value(LValue value) { return FormattedValue(DataFormatInt32, value); }
static inline FormattedValue booleanValue(LValue value) { return FormattedValue(DataFormatBoolean, value); }
static inline FormattedValue jsValueValue(LValue value) { return FormattedValue(DataFormatJS, value); }
static inline FormattedValue doubleValue(LValue value) { return FormattedValue(DataFormatDouble, value); }
} } // namespace JSC::FTL
#endif // ENABLE(FTL_JIT)