1/*
2 * Copyright (C) 2007, 2008 Apple Inc. All rights reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
6 * are met:
7 *
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 * 3.  Neither the name of Apple Computer, Inc. ("Apple") nor the names of
14 *     its contributors may be used to endorse or promote products derived
15 *     from this software without specific prior written permission.
16 *
17 * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
18 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
19 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
20 * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY
21 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
22 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
23 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
24 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 */
28
29#ifndef StaticNodeList_h
30#define StaticNodeList_h
31
32#include "core/dom/NodeList.h"
33#include "wtf/PassRefPtr.h"
34#include "wtf/RefPtr.h"
35#include "wtf/Vector.h"
36#include <v8.h>
37
38namespace blink {
39
40class Element;
41class Node;
42
43template <typename NodeType>
44class StaticNodeTypeList FINAL : public NodeList {
45public:
46    static PassRefPtrWillBeRawPtr<StaticNodeTypeList> adopt(WillBeHeapVector<RefPtrWillBeMember<NodeType> >& nodes);
47
48    static PassRefPtrWillBeRawPtr<StaticNodeTypeList> createEmpty()
49    {
50        return adoptRefWillBeNoop(new StaticNodeTypeList);
51    }
52
53    virtual ~StaticNodeTypeList();
54
55    virtual unsigned length() const OVERRIDE;
56    virtual NodeType* item(unsigned index) const OVERRIDE;
57
58    virtual void trace(Visitor*) OVERRIDE;
59
60private:
61    ptrdiff_t AllocationSize()
62    {
63        return m_nodes.capacity() * sizeof(RefPtrWillBeMember<NodeType>);
64    }
65
66    WillBeHeapVector<RefPtrWillBeMember<NodeType> > m_nodes;
67};
68
69typedef StaticNodeTypeList<Node> StaticNodeList;
70typedef StaticNodeTypeList<Element> StaticElementList;
71
72template <typename NodeType>
73PassRefPtrWillBeRawPtr<StaticNodeTypeList<NodeType> > StaticNodeTypeList<NodeType>::adopt(WillBeHeapVector<RefPtrWillBeMember<NodeType> >& nodes)
74{
75    RefPtrWillBeRawPtr<StaticNodeTypeList<NodeType> > nodeList = adoptRefWillBeNoop(new StaticNodeTypeList<NodeType>);
76    nodeList->m_nodes.swap(nodes);
77    v8::Isolate::GetCurrent()->AdjustAmountOfExternalAllocatedMemory(nodeList->AllocationSize());
78    return nodeList.release();
79}
80
81template <typename NodeType>
82StaticNodeTypeList<NodeType>::~StaticNodeTypeList()
83{
84    v8::Isolate::GetCurrent()->AdjustAmountOfExternalAllocatedMemory(-AllocationSize());
85}
86
87template <typename NodeType>
88unsigned StaticNodeTypeList<NodeType>::length() const
89{
90    return m_nodes.size();
91}
92
93template <typename NodeType>
94NodeType* StaticNodeTypeList<NodeType>::item(unsigned index) const
95{
96    if (index < m_nodes.size())
97        return m_nodes[index].get();
98    return 0;
99}
100
101template <typename NodeType>
102void StaticNodeTypeList<NodeType>::trace(Visitor* visitor)
103{
104    visitor->trace(m_nodes);
105    NodeList::trace(visitor);
106}
107
108} // namespace blink
109
110#endif // StaticNodeList_h
111