PutPropertySlot.h 3.45 KB
Newer Older
ggaren@apple.com's avatar
ggaren@apple.com committed
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29
// -*- 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

30 31
#include "JSCJSValue.h"

ggaren@apple.com's avatar
ggaren@apple.com committed
32 33
#include <wtf/Assertions.h>

34
namespace JSC {
ggaren@apple.com's avatar
ggaren@apple.com committed
35 36
    
    class JSObject;
37
    class JSFunction;
ggaren@apple.com's avatar
ggaren@apple.com committed
38 39 40
    
    class PutPropertySlot {
    public:
41
        enum Type { Uncachable, ExistingProperty, NewProperty, CustomProperty };
42
        enum Context { UnknownContext, PutById, PutByIdEval };
43
        typedef void (*PutValueFunc)(ExecState*, EncodedJSValue base, EncodedJSValue value);
ggaren@apple.com's avatar
ggaren@apple.com committed
44

45
        PutPropertySlot(JSValue thisValue, bool isStrictMode = false, Context context = UnknownContext)
46
            : m_type(Uncachable)
ggaren@apple.com's avatar
ggaren@apple.com committed
47
            , m_base(0)
48
            , m_thisValue(thisValue)
49
            , m_isStrictMode(isStrictMode)
50
            , m_context(context)
51
            , m_putFunction(nullptr)
ggaren@apple.com's avatar
ggaren@apple.com committed
52 53 54
        {
        }

55
        void setExistingProperty(JSObject* base, PropertyOffset offset)
ggaren@apple.com's avatar
ggaren@apple.com committed
56 57 58 59 60 61
        {
            m_type = ExistingProperty;
            m_base = base;
            m_offset = offset;
        }

62
        void setNewProperty(JSObject* base, PropertyOffset offset)
ggaren@apple.com's avatar
ggaren@apple.com committed
63 64 65 66 67
        {
            m_type = NewProperty;
            m_base = base;
            m_offset = offset;
        }
68 69 70 71 72 73 74

        void setCustomProperty(JSObject* base, PutValueFunc function)
        {
            m_type = CustomProperty;
            m_base = base;
            m_putFunction = function;
        }
75 76
        
        Context context() const { return static_cast<Context>(m_context); }
ggaren@apple.com's avatar
ggaren@apple.com committed
77 78

        Type type() const { return m_type; }
79
        JSObject* base() const { return m_base; }
80
        JSValue thisValue() const { return m_thisValue; }
ggaren@apple.com's avatar
ggaren@apple.com committed
81

82
        bool isStrictMode() const { return m_isStrictMode; }
83
        bool isCacheable() const { return m_type != Uncachable && m_type != CustomProperty; }
84 85
        PropertyOffset cachedOffset() const
        {
ggaren@apple.com's avatar
ggaren@apple.com committed
86 87 88
            ASSERT(isCacheable());
            return m_offset;
        }
89

ggaren@apple.com's avatar
ggaren@apple.com committed
90 91
    private:
        Type m_type;
92
        JSObject* m_base;
93
        JSValue m_thisValue;
94
        PropertyOffset m_offset;
95
        bool m_isStrictMode;
96
        uint8_t m_context;
97 98
        PutValueFunc m_putFunction;

ggaren@apple.com's avatar
ggaren@apple.com committed
99 100
    };

101
} // namespace JSC
ggaren@apple.com's avatar
ggaren@apple.com committed
102 103

#endif // PutPropertySlot_h