mirror of
https://github.com/darlinghq/darling-JavaScriptCore.git
synced 2024-12-12 06:16:06 +00:00
88 lines
3.0 KiB
C++
88 lines
3.0 KiB
C++
/*
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* Copyright (C) 2012-2018 Apple Inc. All rights reserved.
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* Copyright (C) 2015-2016 Yusuke Suzuki <utatane.tea@gmail.com>.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
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* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
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* THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#pragma once
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#include "JSString.h"
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#include "PrivateName.h"
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namespace JSC {
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class Symbol final : public JSCell {
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public:
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typedef JSCell Base;
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static const unsigned StructureFlags = Base::StructureFlags | StructureIsImmortal | OverridesToThis;
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DECLARE_EXPORT_INFO;
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static const bool needsDestruction = true;
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static Structure* createStructure(VM& vm, JSGlobalObject* globalObject, JSValue prototype)
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{
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return Structure::create(vm, globalObject, prototype, TypeInfo(SymbolType, StructureFlags), info());
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}
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static Symbol* create(VM&);
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static Symbol* createWithDescription(VM&, const String&);
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JS_EXPORT_PRIVATE static Symbol* create(VM&, SymbolImpl& uid);
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PrivateName privateName() const { return m_privateName; }
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String descriptiveString() const;
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String description() const;
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JSValue toPrimitive(ExecState*, PreferredPrimitiveType) const;
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bool getPrimitiveNumber(ExecState*, double& number, JSValue&) const;
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JSObject* toObject(ExecState*, JSGlobalObject*) const;
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double toNumber(ExecState*) const;
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static ptrdiff_t offsetOfSymbolImpl()
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{
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// PrivateName is just a Ref<SymbolImpl> which can just be used as a SymbolImpl*.
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return OBJECT_OFFSETOF(Symbol, m_privateName);
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}
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protected:
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static void destroy(JSCell*);
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Symbol(VM&);
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Symbol(VM&, const String&);
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Symbol(VM&, SymbolImpl& uid);
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void finishCreation(VM&);
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PrivateName m_privateName;
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};
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Symbol* asSymbol(JSValue);
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inline Symbol* asSymbol(JSValue value)
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{
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ASSERT(value.asCell()->isSymbol());
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return jsCast<Symbol*>(value.asCell());
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}
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} // namespace JSC
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