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27 #ifndef CallIdentifier_h
28 #define CallIdentifier_h
30 #include <runtime/UString.h>
31 #include <wtf/text/CString.h>
32 #include <wtf/text/StringHash.h>
36 struct CallIdentifier {
37 WTF_MAKE_FAST_ALLOCATED;
41 unsigned m_lineNumber;
48 CallIdentifier(const UString& name, const UString& url, int lineNumber)
50 , m_url(!url.isNull() ? url : "")
51 , m_lineNumber(lineNumber)
55 inline bool operator==(const CallIdentifier& ci) const { return ci.m_lineNumber == m_lineNumber && ci.m_name == m_name && ci.m_url == m_url; }
56 inline bool operator!=(const CallIdentifier& ci) const { return !(*this == ci); }
59 static unsigned hash(const CallIdentifier& key)
61 unsigned hashCodes[3] = {
62 key.m_name.impl()->hash(),
63 key.m_url.impl()->hash(),
66 return StringHasher::hashMemory<sizeof(hashCodes)>(hashCodes);
69 static bool equal(const CallIdentifier& a, const CallIdentifier& b) { return a == b; }
70 static const bool safeToCompareToEmptyOrDeleted = true;
73 unsigned hash() const { return Hash::hash(*this); }
76 operator const char*() const { return c_str(); }
77 const char* c_str() const { return m_name.utf8().data(); }
85 template<> struct DefaultHash<JSC::CallIdentifier> { typedef JSC::CallIdentifier::Hash Hash; };
87 template<> struct HashTraits<JSC::CallIdentifier> : GenericHashTraits<JSC::CallIdentifier> {
88 static void constructDeletedValue(JSC::CallIdentifier& slot)
90 new (&slot) JSC::CallIdentifier(JSC::UString(), JSC::UString(), std::numeric_limits<unsigned>::max());
92 static bool isDeletedValue(const JSC::CallIdentifier& value)
94 return value.m_name.isNull() && value.m_url.isNull() && value.m_lineNumber == std::numeric_limits<unsigned>::max();
100 #endif // CallIdentifier_h