| /* |
| * Copyright (C) 2011 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. 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 INC. 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 HandleTypes_h |
| #define HandleTypes_h |
| |
| #include "JSValue.h" |
| |
| namespace JSC { |
| |
| typedef enum { } Unknown; |
| typedef JSValue* HandleSlot; |
| |
| template<typename T> struct HandleTypes { |
| typedef T* ExternalType; |
| static ExternalType getFromSlot(HandleSlot slot) { return (slot && *slot) ? reinterpret_cast<ExternalType>(static_cast<void*>(slot->asCell())) : 0; } |
| static JSValue toJSValue(T* cell) { return reinterpret_cast<JSCell*>(cell); } |
| template<typename U> static void validateUpcast() { T* temp; temp = (U*)0; } |
| }; |
| |
| template<> struct HandleTypes<Unknown> { |
| typedef JSValue ExternalType; |
| static ExternalType getFromSlot(HandleSlot slot) { return slot ? *slot : JSValue(); } |
| static JSValue toJSValue(const JSValue& v) { return v; } |
| template<typename U> static void validateUpcast() { } |
| }; |
| |
| } // namespace JSC |
| |
| #endif // HandleTypes_h |