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/*
* Copyright (C) 2012-2023 Apple Inc. All rights reserved.
* Copyright (C) 2015-2016 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.
*/
#include "config.h"
#include "Symbol.h"
#include "JSCJSValueInlines.h"
#include "SymbolObject.h"
namespace JSC {
const ClassInfo Symbol::s_info = { "symbol"_s, nullptr, nullptr, nullptr, CREATE_METHOD_TABLE(Symbol) };
Symbol::Symbol(VM& vm)
: Base(vm, vm.symbolStructure.get())
, m_privateName(SymbolImpl::createNullSymbol())
{
}
Symbol::Symbol(VM& vm, const String& string)
: Base(vm, vm.symbolStructure.get())
, m_privateName(PrivateName::Description, string)
{
}
Symbol::Symbol(VM& vm, SymbolImpl& uid)
: Base(vm, vm.symbolStructure.get())
, m_privateName(uid)
{
}
void Symbol::finishCreation(VM& vm)
{
Base::finishCreation(vm);
ASSERT(inherits(info()));
vm.symbolImplToSymbolMap.set(&m_privateName.uid(), this);
}
JSValue Symbol::toPrimitive(JSGlobalObject*, PreferredPrimitiveType) const
{
return const_cast<Symbol*>(this);
}
JSObject* Symbol::toObject(JSGlobalObject* globalObject) const
{
return SymbolObject::create(globalObject->vm(), globalObject->symbolObjectStructure(), const_cast<Symbol*>(this));
}
double Symbol::toNumber(JSGlobalObject* globalObject) const
{
VM& vm = globalObject->vm();
auto scope = DECLARE_THROW_SCOPE(vm);
throwTypeError(globalObject, scope, "Cannot convert a symbol to a number"_s);
return 0.0;
}
void Symbol::destroy(JSCell* cell)
{
static_cast<Symbol*>(cell)->Symbol::~Symbol();
}
String Symbol::descriptiveString() const
{
return makeString("Symbol("_s, StringView(m_privateName.uid()), ')');
}
Expected<String, ErrorTypeWithExtension> Symbol::tryGetDescriptiveString() const
{
String description = tryMakeString("Symbol("_s, StringView(m_privateName.uid()), ')');
if (!description)
return makeUnexpected(ErrorTypeWithExtension::OutOfMemoryError);
return description;
}
String Symbol::description() const
{
auto& uid = m_privateName.uid();
return uid.isNullSymbol() ? String() : uid;
}
Symbol* Symbol::create(VM& vm)
{
Symbol* symbol = new (NotNull, allocateCell<Symbol>(vm)) Symbol(vm);
symbol->finishCreation(vm);
return symbol;
}
Symbol* Symbol::createWithDescription(VM& vm, const String& description)
{
Symbol* symbol = new (NotNull, allocateCell<Symbol>(vm)) Symbol(vm, description);
symbol->finishCreation(vm);
return symbol;
}
Symbol* Symbol::create(VM& vm, SymbolImpl& uid)
{
if (Symbol* symbol = vm.symbolImplToSymbolMap.get(&uid))
return symbol;
Symbol* symbol = new (NotNull, allocateCell<Symbol>(vm)) Symbol(vm, uid);
symbol->finishCreation(vm);
return symbol;
}
} // namespace JSC
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