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/*
* Copyright (C) 2012 Apple Inc. All rights reserved.
* Copyright (C) 2014 Apple Inc. All rights reserved.
* Copyright (C) 2015 Yusuke Suzuki <utatane.tea@gmail.com>.
*
* 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. AND ITS CONTRIBUTORS ``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 ITS 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 Symbol_h
#define Symbol_h
#include "JSCell.h"
#include "JSString.h"
#include "PrivateName.h"
namespace JSC {
class Symbol final : public JSCell {
public:
typedef JSCell Base;
static const unsigned StructureFlags = Base::StructureFlags | StructureIsImmortal;
DECLARE_EXPORT_INFO;
static const bool needsDestruction = true;
static Structure* createStructure(VM& vm, JSGlobalObject* globalObject, JSValue prototype)
{
return Structure::create(vm, globalObject, prototype, TypeInfo(SymbolType, StructureFlags), info());
}
static Symbol* create(VM& vm)
{
Symbol* symbol = new (NotNull, allocateCell<Symbol>(vm.heap)) Symbol(vm);
symbol->finishCreation(vm);
return symbol;
}
static Symbol* create(ExecState* exec, JSString* description)
{
VM& vm = exec->vm();
String desc = description->value(exec);
Symbol* symbol = new (NotNull, allocateCell<Symbol>(vm.heap)) Symbol(vm, desc);
symbol->finishCreation(vm);
return symbol;
}
static Symbol* create(VM& vm, SymbolImpl& uid)
{
Symbol* symbol = new (NotNull, allocateCell<Symbol>(vm.heap)) Symbol(vm, uid);
symbol->finishCreation(vm);
return symbol;
}
const PrivateName& privateName() const { return m_privateName; }
String descriptiveString() const;
JSValue toPrimitive(ExecState*, PreferredPrimitiveType) const;
bool getPrimitiveNumber(ExecState*, double& number, JSValue&) const;
JSObject* toObject(ExecState*, JSGlobalObject*) const;
double toNumber(ExecState*) const;
static size_t offsetOfPrivateName() { return OBJECT_OFFSETOF(Symbol, m_privateName); }
protected:
static void destroy(JSCell*);
Symbol(VM&);
Symbol(VM&, const String&);
Symbol(VM&, SymbolImpl& uid);
void finishCreation(VM& vm)
{
Base::finishCreation(vm);
ASSERT(inherits(info()));
}
PrivateName m_privateName;
};
Symbol* asSymbol(JSValue);
inline Symbol* asSymbol(JSValue value)
{
ASSERT(value.asCell()->isSymbol());
return jsCast<Symbol*>(value.asCell());
}
} // namespace JSC
#endif // Symbol_h
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