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Diffstat (limited to 'src/3rdparty/webkit/JavaScriptCore/runtime/PutPropertySlot.h')
-rw-r--r-- | src/3rdparty/webkit/JavaScriptCore/runtime/PutPropertySlot.h | 81 |
1 files changed, 81 insertions, 0 deletions
diff --git a/src/3rdparty/webkit/JavaScriptCore/runtime/PutPropertySlot.h b/src/3rdparty/webkit/JavaScriptCore/runtime/PutPropertySlot.h new file mode 100644 index 0000000..1e2dfe9 --- /dev/null +++ b/src/3rdparty/webkit/JavaScriptCore/runtime/PutPropertySlot.h @@ -0,0 +1,81 @@ +// -*- 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 PutPropertySlot { + public: + enum Type { Invalid, ExistingProperty, NewProperty }; + + PutPropertySlot() + : m_type(Invalid) + , m_base(0) + , m_wasTransition(false) + { + } + + 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 != Invalid; } + size_t cachedOffset() const { + ASSERT(isCacheable()); + return m_offset; + } + + bool wasTransition() const { return m_wasTransition; } + void setWasTransition(bool wasTransition) { m_wasTransition = wasTransition; } + private: + Type m_type; + JSObject* m_base; + bool m_wasTransition; + size_t m_offset; + }; + +} // namespace JSC + +#endif // PutPropertySlot_h |