2692db8699
Note that as of this commit, there aren't any such throwers, and the call site in Heap::allocate will drop exceptions on the floor. This commit only serves to change the declaration of the overrides, make sure they return an empty value, and to propagate OOM errors frm their base initialize invocations.
63 lines
2.7 KiB
C++
63 lines
2.7 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 NonnullGCPtr<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 NonnullGCPtr<NativeFunction> create(Realm&, DeprecatedFlyString const& name, SafeFunction<ThrowCompletionOr<Value>(VM&)>);
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virtual ThrowCompletionOr<void> initialize(Realm&) override { return {}; }
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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<NonnullGCPtr<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<NonnullGCPtr<Object>> construct(FunctionObject& new_target);
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virtual DeprecatedFlyString 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<DeprecatedFlyString> const& initial_name() const { return m_initial_name; }
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void set_initial_name(Badge<FunctionObject>, DeprecatedFlyString initial_name) { m_initial_name = move(initial_name); }
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protected:
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NativeFunction(DeprecatedFlyString name, Object& prototype);
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NativeFunction(SafeFunction<ThrowCompletionOr<Value>(VM&)>, Object* prototype, Realm& realm);
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NativeFunction(DeprecatedFlyString 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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DeprecatedFlyString m_name;
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Optional<DeprecatedFlyString> 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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