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authorSteve Block <steveblock@google.com>2011-05-06 11:45:16 +0100
committerSteve Block <steveblock@google.com>2011-05-12 13:44:10 +0100
commitcad810f21b803229eb11403f9209855525a25d57 (patch)
tree29a6fd0279be608e0fe9ffe9841f722f0f4e4269 /JavaScriptCore/runtime/JSNotAnObject.h
parent121b0cf4517156d0ac5111caf9830c51b69bae8f (diff)
downloadexternal_webkit-cad810f21b803229eb11403f9209855525a25d57.zip
external_webkit-cad810f21b803229eb11403f9209855525a25d57.tar.gz
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Merge WebKit at r75315: Initial merge by git.
Change-Id: I570314b346ce101c935ed22a626b48c2af266b84
Diffstat (limited to 'JavaScriptCore/runtime/JSNotAnObject.h')
-rw-r--r--JavaScriptCore/runtime/JSNotAnObject.h79
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diff --git a/JavaScriptCore/runtime/JSNotAnObject.h b/JavaScriptCore/runtime/JSNotAnObject.h
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-/*
- * Copyright (C) 2008, 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.
- * 3. Neither the name of Apple Computer, Inc. ("Apple") nor the names of
- * its contributors may be used to endorse or promote products derived
- * from this software without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "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 OR ITS 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 JSNotAnObject_h
-#define JSNotAnObject_h
-
-#include "JSObject.h"
-
-namespace JSC {
-
- // This unholy class is used to allow us to avoid multiple exception checks
- // in certain SquirrelFish bytecodes -- effectively it just silently consumes
- // any operations performed on the result of a failed toObject call.
- class JSNotAnObject : public JSObject {
- public:
- JSNotAnObject(ExecState* exec)
- : JSObject(exec->globalData().notAnObjectStructure)
- {
- }
-
- static PassRefPtr<Structure> createStructure(JSValue prototype)
- {
- return Structure::create(prototype, TypeInfo(ObjectType, StructureFlags), AnonymousSlotCount);
- }
-
- private:
-
- static const unsigned StructureFlags = OverridesGetOwnPropertySlot | OverridesGetPropertyNames | JSObject::StructureFlags;
-
- // JSValue methods
- virtual JSValue toPrimitive(ExecState*, PreferredPrimitiveType) const;
- virtual bool getPrimitiveNumber(ExecState*, double& number, JSValue&);
- virtual bool toBoolean(ExecState*) const;
- virtual double toNumber(ExecState*) const;
- virtual UString toString(ExecState*) const;
- virtual JSObject* toObject(ExecState*) const;
-
- // JSObject methods
- virtual bool getOwnPropertySlot(ExecState*, const Identifier& propertyName, PropertySlot&);
- virtual bool getOwnPropertySlot(ExecState*, unsigned propertyName, PropertySlot&);
- virtual bool getOwnPropertyDescriptor(ExecState*, const Identifier&, PropertyDescriptor&);
-
- virtual void put(ExecState*, const Identifier& propertyName, JSValue, PutPropertySlot&);
- virtual void put(ExecState*, unsigned propertyName, JSValue);
-
- virtual bool deleteProperty(ExecState*, const Identifier& propertyName);
- virtual bool deleteProperty(ExecState*, unsigned propertyName);
-
- virtual void getOwnPropertyNames(ExecState*, PropertyNameArray&, EnumerationMode mode = ExcludeDontEnumProperties);
- };
-
-} // namespace JSC
-
-#endif // JSNotAnObject_h