/* | |
* Copyright (C) 2009 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 COMPUTER, 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 COMPUTER, 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 IdentifierRep_h | |
#define IdentifierRep_h | |
#include <wtf/Assertions.h> | |
#include <wtf/FastAllocBase.h> | |
#include <wtf/StringExtras.h> | |
#include <string.h> | |
namespace WebCore { | |
class IdentifierRep : public FastAllocBase { | |
public: | |
static IdentifierRep* get(int); | |
static IdentifierRep* get(const char*); | |
static bool isValid(IdentifierRep*); | |
bool isString() const { return m_isString; } | |
int number() const { return m_isString ? 0 : m_value.m_number; } | |
const char* string() const { return m_isString ? m_value.m_string : 0; } | |
private: | |
IdentifierRep(int number) | |
: m_isString(false) | |
{ | |
m_value.m_number = number; | |
} | |
IdentifierRep(const char* name) | |
: m_isString(true) | |
{ | |
m_value.m_string = fastStrDup(name); | |
} | |
~IdentifierRep() | |
{ | |
// IdentifierReps should never be deleted. | |
ASSERT_NOT_REACHED(); | |
} | |
union { | |
const char* m_string; | |
int m_number; | |
} m_value; | |
bool m_isString; | |
}; | |
} // namespace WebCore | |
#endif // IdentifierRep_h |