1 | /* |
2 | * Copyright (C) 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 | * 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 | |
27 | #ifndef CallIdentifier_h |
28 | #define CallIdentifier_h |
29 | |
30 | #include <runtime/UString.h> |
31 | #include "FastAllocBase.h" |
32 | |
33 | namespace JSC { |
34 | |
35 | struct CallIdentifier : public FastAllocBase { |
36 | UString m_name; |
37 | UString m_url; |
38 | unsigned m_lineNumber; |
39 | |
40 | CallIdentifier() |
41 | : m_lineNumber(0) |
42 | { |
43 | } |
44 | |
45 | CallIdentifier(const UString& name, const UString& url, int lineNumber) |
46 | : m_name(name) |
47 | , m_url(url) |
48 | , m_lineNumber(lineNumber) |
49 | { |
50 | } |
51 | |
52 | inline bool operator==(const CallIdentifier& ci) const { return ci.m_lineNumber == m_lineNumber && ci.m_name == m_name && ci.m_url == m_url; } |
53 | inline bool operator!=(const CallIdentifier& ci) const { return !(*this == ci); } |
54 | |
55 | struct Hash { |
56 | static unsigned hash(const CallIdentifier& key) |
57 | { |
58 | unsigned hashCodes[3] = { |
59 | key.m_name.rep()->hash(), |
60 | key.m_url.rep()->hash(), |
61 | key.m_lineNumber |
62 | }; |
63 | return UString::Rep::computeHash(s: reinterpret_cast<char*>(hashCodes), length: sizeof(hashCodes)); |
64 | } |
65 | |
66 | static bool equal(const CallIdentifier& a, const CallIdentifier& b) { return a == b; } |
67 | static const bool safeToCompareToEmptyOrDeleted = true; |
68 | }; |
69 | |
70 | unsigned hash() const { return Hash::hash(key: *this); } |
71 | |
72 | #ifndef NDEBUG |
73 | operator const char*() const { return c_str(); } |
74 | const char* c_str() const { return m_name.UTF8String().c_str(); } |
75 | #endif |
76 | }; |
77 | |
78 | } // namespace JSC |
79 | |
80 | namespace WTF { |
81 | |
82 | template<> struct DefaultHash<JSC::CallIdentifier> { typedef JSC::CallIdentifier::Hash Hash; }; |
83 | |
84 | template<> struct HashTraits<JSC::CallIdentifier> : GenericHashTraits<JSC::CallIdentifier> { |
85 | static void constructDeletedValue(JSC::CallIdentifier& slot) |
86 | { |
87 | new (&slot) JSC::CallIdentifier(JSC::UString(), JSC::UString(), std::numeric_limits<unsigned>::max()); |
88 | } |
89 | static bool isDeletedValue(const JSC::CallIdentifier& value) |
90 | { |
91 | return value.m_name.isNull() && value.m_url.isNull() && value.m_lineNumber == std::numeric_limits<unsigned>::max(); |
92 | } |
93 | }; |
94 | |
95 | } // namespace WTF |
96 | |
97 | #endif // CallIdentifier_h |
98 | |
99 | |