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/Variant.h>
32#include <wtf/text/UniquedStringImpl.h>
33#include <wtf/Box.h>
34#include <runtime/Identifier.h>
35
36namespace JSC {
37
38class CodeBlock;
39class VM;
40
41namespace DFG {
42
43class CommonData;
44
45class DesiredIdentifiers {
46public:
47 DesiredIdentifiers();
48 DesiredIdentifiers(CodeBlock*);
49 ~DesiredIdentifiers();
50
51 unsigned numberOfIdentifiers();
52 unsigned ensure(UniquedStringImpl*);
53 unsigned ensure(Box<Identifier>);
54
55 UniquedStringImpl* at(unsigned index) const;
56
57 UniquedStringImpl* operator[](unsigned index) const { return at(index); }
58
59 void reallyAdd(VM&, CommonData*);
60
61private:
62 void processCodeBlockIdentifiersIfNeeded();
63
64 CodeBlock* m_codeBlock;
65 Vector<Variant<UniquedStringImpl*, Box<Identifier>>> m_addedIdentifiers;
66 HashMap<UniquedStringImpl*, unsigned> m_identifierNumberForName;
67 bool m_didProcessIdentifiers;
68};
69
70} } // namespace JSC::DFG
71
72#endif // ENABLE(DFG_JIT)
73