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			50 lines
		
	
	
	
		
			1.6 KiB
		
	
	
	
		
			C++
		
	
	
	
	
	
			
		
		
	
	
			50 lines
		
	
	
	
		
			1.6 KiB
		
	
	
	
		
			C++
		
	
	
	
	
	
/*
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 * Copyright (c) 2020-2021, Andreas Kling <kling@serenityos.org>
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 * Copyright (c) 2021-2022, Linus Groh <linusg@serenityos.org>
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 *
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 * SPDX-License-Identifier: BSD-2-Clause
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 */
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#pragma once
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#include <AK/Optional.h>
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#include <AK/StringView.h>
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#include <LibJS/Runtime/Object.h>
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#include <LibJS/Runtime/PrivateEnvironment.h>
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#include <LibJS/Runtime/PropertyKey.h>
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namespace JS {
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class FunctionObject : public Object {
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    JS_OBJECT(Function, Object);
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public:
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    virtual ~FunctionObject() = default;
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    virtual void initialize(GlobalObject&) override { }
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    // Table 7: Additional Essential Internal Methods of Function Objects, https://tc39.es/ecma262/#table-additional-essential-internal-methods-of-function-objects
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    virtual ThrowCompletionOr<Value> internal_call(Value this_argument, MarkedVector<Value> arguments_list) = 0;
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    virtual ThrowCompletionOr<Object*> internal_construct([[maybe_unused]] MarkedVector<Value> arguments_list, [[maybe_unused]] FunctionObject& new_target) { VERIFY_NOT_REACHED(); }
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    virtual FlyString const& name() const = 0;
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    void set_function_name(Variant<PropertyKey, PrivateName> const& name_arg, Optional<StringView> const& prefix = {});
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    void set_function_length(double length);
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    virtual bool is_strict_mode() const { return false; }
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    virtual bool has_constructor() const { return false; }
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    // [[Realm]]
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    virtual Realm* realm() const { return nullptr; }
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protected:
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    explicit FunctionObject(GlobalObject&, Object* prototype);
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    explicit FunctionObject(Object& prototype);
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private:
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    virtual bool is_function() const override { return true; }
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};
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}
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