1/*
2 * Copyright (C) 2013-2015 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#pragma once
27
28#if ENABLE(DFG_JIT)
29
30#include <wtf/HashMap.h>
31#include <wtf/text/UniquedStringImpl.h>
32
33namespace JSC {
34
35class CodeBlock;
36class VM;
37
38namespace DFG {
39
40class CommonData;
41
42class DesiredIdentifiers {
43public:
44 DesiredIdentifiers();
45 DesiredIdentifiers(CodeBlock*);
46 ~DesiredIdentifiers();
47
48 unsigned numberOfIdentifiers();
49 unsigned ensure(UniquedStringImpl*);
50
51 UniquedStringImpl* at(unsigned index) const;
52
53 UniquedStringImpl* operator[](unsigned index) const { return at(index); }
54
55 void reallyAdd(VM&, CommonData*);
56
57private:
58 CodeBlock* m_codeBlock;
59 Vector<UniquedStringImpl*> m_addedIdentifiers;
60 HashMap<UniquedStringImpl*, unsigned> m_identifierNumberForName;
61 bool m_didProcessIdentifiers;
62};
63
64} } // namespace JSC::DFG
65
66#endif // ENABLE(DFG_JIT)
67