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
33namespace 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
80namespace 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

source code of qtscript/src/3rdparty/javascriptcore/JavaScriptCore/profiler/CallIdentifier.h