blob: 1ba5ec604376f9797c523bee1798da065f75806d [file] [log] [blame]
/*
* 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 <wtf/text/CString.h>
#include <wtf/text/StringHash.h>
namespace JSC {
struct CallIdentifier {
WTF_MAKE_FAST_ALLOCATED;
public:
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.isNull() ? 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.impl()->hash(),
key.m_url.impl()->hash(),
key.m_lineNumber
};
return StringHasher::hashMemory<sizeof(hashCodes)>(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.utf8().data(); }
#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