/* | |
* Copyright (C) 2008 Apple Inc. All Rights Reserved. | |
* | |
* Redistribution and use in source and binary forms, with or without | |
* modification, are permitted provided that the following conditions | |
* are met: | |
* 1. Redistributions of source code must retain the above copyright | |
* notice, this list of conditions and the following disclaimer. | |
* 2. Redistributions in binary form must reproduce the above copyright | |
* notice, this list of conditions and the following disclaimer in the | |
* documentation and/or other materials provided with the distribution. | |
* | |
* THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY | |
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR | |
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR | |
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, | |
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, | |
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR | |
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY | |
* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | |
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE | |
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
*/ | |
#ifndef CallIdentifier_h | |
#define CallIdentifier_h | |
#include <runtime/UString.h> | |
#include "FastAllocBase.h" | |
namespace JSC { | |
struct CallIdentifier : public FastAllocBase { | |
UString m_name; | |
UString m_url; | |
unsigned m_lineNumber; | |
CallIdentifier() | |
: m_lineNumber(0) | |
{ | |
} | |
CallIdentifier(const UString& name, const UString& url, int lineNumber) | |
: m_name(name) | |
, m_url(url) | |
, m_lineNumber(lineNumber) | |
{ | |
} | |
inline bool operator==(const CallIdentifier& ci) const { return ci.m_lineNumber == m_lineNumber && ci.m_name == m_name && ci.m_url == m_url; } | |
inline bool operator!=(const CallIdentifier& ci) const { return !(*this == ci); } | |
struct Hash { | |
static unsigned hash(const CallIdentifier& key) | |
{ | |
unsigned hashCodes[3] = { | |
key.m_name.rep()->hash(), | |
key.m_url.rep()->hash(), | |
key.m_lineNumber | |
}; | |
return UString::Rep::computeHash(reinterpret_cast<char*>(hashCodes), sizeof(hashCodes)); | |
} | |
static bool equal(const CallIdentifier& a, const CallIdentifier& b) { return a == b; } | |
static const bool safeToCompareToEmptyOrDeleted = true; | |
}; | |
unsigned hash() const { return Hash::hash(*this); } | |
#ifndef NDEBUG | |
operator const char*() const { return c_str(); } | |
const char* c_str() const { return m_name.UTF8String().c_str(); } | |
#endif | |
}; | |
} // namespace JSC | |
namespace WTF { | |
template<> struct DefaultHash<JSC::CallIdentifier> { typedef JSC::CallIdentifier::Hash Hash; }; | |
template<> struct HashTraits<JSC::CallIdentifier> : GenericHashTraits<JSC::CallIdentifier> { | |
static void constructDeletedValue(JSC::CallIdentifier& slot) | |
{ | |
new (&slot) JSC::CallIdentifier(JSC::UString(), JSC::UString(), std::numeric_limits<unsigned>::max()); | |
} | |
static bool isDeletedValue(const JSC::CallIdentifier& value) | |
{ | |
return value.m_name.isNull() && value.m_url.isNull() && value.m_lineNumber == std::numeric_limits<unsigned>::max(); | |
} | |
}; | |
} // namespace WTF | |
#endif // CallIdentifier_h | |