e68e92b304
This still needs a project-wide cleanup to remove handles captured in lambdas, which is now longer required. For now, this will be used in the next commit implementing promise AOs from Web IDL, which make heavy use of deferred callbacks.
63 lines
2.6 KiB
C++
63 lines
2.6 KiB
C++
/*
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* Copyright (c) 2020, 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/Badge.h>
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#include <AK/Optional.h>
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#include <LibJS/Runtime/Completion.h>
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#include <LibJS/Runtime/FunctionObject.h>
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#include <LibJS/Runtime/PropertyKey.h>
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#include <LibJS/SafeFunction.h>
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namespace JS {
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class NativeFunction : public FunctionObject {
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JS_OBJECT(NativeFunction, FunctionObject);
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public:
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static NativeFunction* create(Realm&, SafeFunction<ThrowCompletionOr<Value>(VM&)> behaviour, i32 length, PropertyKey const& name, Optional<Realm*> = {}, Optional<Object*> prototype = {}, Optional<StringView> const& prefix = {});
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static NativeFunction* create(Realm&, FlyString const& name, SafeFunction<ThrowCompletionOr<Value>(VM&)>);
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virtual void initialize(Realm&) override { }
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virtual ~NativeFunction() override = default;
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virtual ThrowCompletionOr<Value> internal_call(Value this_argument, MarkedVector<Value> arguments_list) override;
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virtual ThrowCompletionOr<Object*> internal_construct(MarkedVector<Value> arguments_list, FunctionObject& new_target) override;
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// Used for [[Call]] / [[Construct]]'s "...result of evaluating F in a manner that conforms to the specification of F".
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// Needs to be overridden by all NativeFunctions without an m_native_function.
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virtual ThrowCompletionOr<Value> call();
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virtual ThrowCompletionOr<Object*> construct(FunctionObject& new_target);
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virtual FlyString const& name() const override { return m_name; };
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virtual bool is_strict_mode() const override;
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virtual bool has_constructor() const override { return false; }
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virtual Realm* realm() const override { return m_realm; }
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Optional<FlyString> const& initial_name() const { return m_initial_name; }
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void set_initial_name(Badge<FunctionObject>, FlyString initial_name) { m_initial_name = move(initial_name); }
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protected:
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NativeFunction(FlyString name, Object& prototype);
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NativeFunction(SafeFunction<ThrowCompletionOr<Value>(VM&)>, Object* prototype, Realm& realm);
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NativeFunction(FlyString name, SafeFunction<ThrowCompletionOr<Value>(VM&)>, Object& prototype);
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explicit NativeFunction(Object& prototype);
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private:
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virtual bool is_native_function() const final { return true; }
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FlyString m_name;
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Optional<FlyString> m_initial_name; // [[InitialName]]
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SafeFunction<ThrowCompletionOr<Value>(VM&)> m_native_function;
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Realm* m_realm { nullptr };
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};
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template<>
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inline bool Object::fast_is<NativeFunction>() const { return is_native_function(); }
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}
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