1/*
2 * Copyright (C) 2013, 2014 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 * 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.
12 *
13 * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
16 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE INC. OR
17 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
18 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
19 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
20 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
21 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
23 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
24 */
25
26#ifndef DFGDesiredIdentifiers_h
27#define DFGDesiredIdentifiers_h
28
29#if ENABLE(DFG_JIT)
30
31#include "Identifier.h"
32
33namespace JSC {
34
35class CodeBlock;
36
37namespace DFG {
38
39class CommonData;
40
41class DesiredIdentifiers {
42public:
43    DesiredIdentifiers();
44    DesiredIdentifiers(CodeBlock*);
45    ~DesiredIdentifiers();
46
47    unsigned numberOfIdentifiers();
48    void addLazily(StringImpl*);
49
50    StringImpl* at(unsigned index) const;
51
52    StringImpl* operator[](unsigned index) const { return at(index); }
53
54    void reallyAdd(VM&, CommonData*);
55
56private:
57    CodeBlock* m_codeBlock;
58    Vector<StringImpl*> m_addedIdentifiers;
59};
60
61} } // namespace JSC::DFG
62
63#endif // ENABLE(DFG_JIT)
64
65#endif // DFGDesiredIdentifiers_h
66
67