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			39 lines
		
	
	
	
		
			882 B
		
	
	
	
		
			C++
		
	
	
	
	
	
			
		
		
	
	
			39 lines
		
	
	
	
		
			882 B
		
	
	
	
		
			C++
		
	
	
	
	
	
| /*
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|  * Copyright (c) 2021, Idan Horowitz <idan.horowitz@serenityos.org>
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|  *
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|  * SPDX-License-Identifier: BSD-2-Clause
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|  */
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| 
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| #pragma once
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| 
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| #include <LibJS/Runtime/GlobalObject.h>
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| #include <LibJS/Runtime/Object.h>
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| #include <LibJS/Runtime/WeakContainer.h>
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| 
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| namespace JS {
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| 
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| class WeakRef final
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|     : public Object
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|     , public WeakContainer {
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|     JS_OBJECT(WeakRef, Object);
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| 
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| public:
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|     static WeakRef* create(GlobalObject&, Object*);
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| 
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|     explicit WeakRef(Object*, Object& prototype);
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|     virtual ~WeakRef() override;
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| 
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|     Object* value() const { return m_value; };
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| 
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|     void update_execution_generation() { m_last_execution_generation = vm().execution_generation(); };
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| 
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|     virtual void remove_swept_cells(Badge<Heap>, Vector<Cell*>&) override;
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| 
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| private:
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|     virtual void visit_edges(Visitor&) override;
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| 
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|     Object* m_value { nullptr };
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|     u32 m_last_execution_generation { 0 };
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| };
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| 
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| }
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