1// -*- mode: c++; c-basic-offset: 4 -*- 2/* 3 * Copyright (C) 2008 Apple Inc. All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 14 * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY 15 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 17 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR 18 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 19 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 20 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 21 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY 22 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 24 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 25 */ 26 27#ifndef PutPropertySlot_h 28#define PutPropertySlot_h 29 30#include <wtf/Assertions.h> 31 32namespace JSC { 33 34 class JSObject; 35 class JSFunction; 36 37 class PutPropertySlot { 38 public: 39 enum Type { Uncachable, ExistingProperty, NewProperty }; 40 41 PutPropertySlot(bool isStrictMode = false) 42 : m_type(Uncachable) 43 , m_base(0) 44 , m_isStrictMode(isStrictMode) 45 { 46 } 47 48 void setExistingProperty(JSObject* base, PropertyOffset offset) 49 { 50 m_type = ExistingProperty; 51 m_base = base; 52 m_offset = offset; 53 } 54 55 void setNewProperty(JSObject* base, PropertyOffset offset) 56 { 57 m_type = NewProperty; 58 m_base = base; 59 m_offset = offset; 60 } 61 62 Type type() const { return m_type; } 63 JSObject* base() const { return m_base; } 64 65 bool isStrictMode() const { return m_isStrictMode; } 66 bool isCacheable() const { return m_type != Uncachable; } 67 PropertyOffset cachedOffset() const 68 { 69 ASSERT(isCacheable()); 70 return m_offset; 71 } 72 73 private: 74 Type m_type; 75 JSObject* m_base; 76 PropertyOffset m_offset; 77 bool m_isStrictMode; 78 }; 79 80} // namespace JSC 81 82#endif // PutPropertySlot_h 83