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// -*- mode: c++; c-basic-offset: 4 -*-
/*
* Copyright (C) 2008 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 COMPUTER, 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 COMPUTER, 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 PutPropertySlot_h
#define PutPropertySlot_h
#include <wtf/Assertions.h>
namespace JSC {
class JSObject;
class JSFunction;
class PutPropertySlot {
public:
enum Type { Uncachable, ExistingProperty, NewProperty };
PutPropertySlot()
: m_type(Uncachable)
, m_base(0)
{
}
void setExistingProperty(JSObject* base, size_t offset)
{
m_type = ExistingProperty;
m_base = base;
m_offset = offset;
}
void setNewProperty(JSObject* base, size_t offset)
{
m_type = NewProperty;
m_base = base;
m_offset = offset;
}
Type type() const { return m_type; }
JSObject* base() const { return m_base; }
bool isCacheable() const { return m_type != Uncachable; }
size_t cachedOffset() const {
ASSERT(isCacheable());
return m_offset;
}
private:
Type m_type;
JSObject* m_base;
size_t m_offset;
};
} // namespace JSC
#endif // PutPropertySlot_h
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