Source/JavaScriptCore/bytecode/UnlinkedFunctionCodeBlock.h

/*
 * Copyright (C) 2012-2019 Apple Inc. All Rights Reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
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 * 1. Redistributions of source code must retain the above copyright
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 *
 * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
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 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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 */

#pragma once

#include "UnlinkedCodeBlock.h"

namespace JSC {

class CachedFunctionCodeBlock;

class UnlinkedFunctionCodeBlock final : public UnlinkedCodeBlock {
public:
    typedef UnlinkedCodeBlock Base;
    static constexpr unsigned StructureFlags = Base::StructureFlags | StructureIsImmortal;

    template<typename CellType, SubspaceAccess mode>
    static IsoSubspace* subspaceFor(VM& vm)
    {
        return vm.unlinkedFunctionCodeBlockSpace<mode>();
    }

    static UnlinkedFunctionCodeBlock* create(VM& vm, CodeType codeType, const ExecutableInfo& info, OptionSet<CodeGenerationMode> codeGenerationMode)
    {
        UnlinkedFunctionCodeBlock* instance = new (NotNull, allocateCell<UnlinkedFunctionCodeBlock>(vm.heap)) UnlinkedFunctionCodeBlock(vm, vm.unlinkedFunctionCodeBlockStructure.get(), codeType, info, codeGenerationMode);
        instance->finishCreation(vm);
        return instance;
    }

    static void destroy(JSCell*);

private:
    friend CachedFunctionCodeBlock;

    UnlinkedFunctionCodeBlock(VM& vm, Structure* structure, CodeType codeType, const ExecutableInfo& info, OptionSet<CodeGenerationMode> codeGenerationMode)
        : Base(vm, structure, codeType, info, codeGenerationMode)
    {
    }

    UnlinkedFunctionCodeBlock(Decoder&, const CachedFunctionCodeBlock&);
    
public:
    static Structure* createStructure(VM& vm, JSGlobalObject* globalObject, JSValue proto)
    {
        return Structure::create(vm, globalObject, proto, TypeInfo(UnlinkedFunctionCodeBlockType, StructureFlags), info());
    }

    DECLARE_INFO;
};

}