2 * Copyright (C) 2013 Apple Inc. All rights reserved.
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
7 * 1. Redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution.
13 * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
14 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
15 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
17 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
18 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
19 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
20 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
21 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
22 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
23 * THE POSSIBILITY OF SUCH DAMAGE.
33 WTF_MAKE_NONCOPYABLE(Bag);
34 WTF_MAKE_FAST_ALLOCATED;
37 WTF_MAKE_FAST_ALLOCATED;
39 template<typename... Args>
57 m_head = other.m_head;
58 other.m_head = nullptr;
61 Bag& operator=(Bag<T>&& other)
63 m_head = other.m_head;
64 other.m_head = nullptr;
76 Node* current = m_head;
77 m_head = current->m_next;
83 template<typename... Args>
86 Node* newNode = new Node(args...);
87 newNode->m_next = m_head;
89 return &newNode->m_item;
99 // This is sort of cheating; it's equivalent to iter == end().
100 bool operator!() const { return !m_node; }
102 T* operator*() const { return &m_node->m_item; }
104 iterator& operator++()
106 m_node = m_node->m_next;
110 bool operator==(const iterator& other) const
112 return m_node == other.m_node;
115 bool operator!=(const iterator& other) const
117 return !(*this == other);
121 template<typename U> friend class WTF::Bag;
128 result.m_node = m_head;
132 iterator end() { return iterator(); }
134 bool isEmpty() const { return !m_head; }
137 Node* m_head { nullptr };