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https://github.com/LadybirdBrowser/ladybird.git
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2a9b6f1d97
We were doing way too much computation every time an ESFO was instantiated. This was particularly sad, since the results of these computations were identical every time! This patch adds a new SharedFunctionInstanceData object that gets shared between all instances of an ESFO instantiated from some kind of AST FunctionNode. ~5% speedup on Speedometer 2.1 :^)
53 lines
1.9 KiB
C++
53 lines
1.9 KiB
C++
/*
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* Copyright (c) 2020-2021, Andreas Kling <andreas@ladybird.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(FunctionObject, Object);
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public:
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virtual ~FunctionObject() = default;
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// Table 5: 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, ReadonlySpan<Value> arguments_list) = 0;
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virtual ThrowCompletionOr<GC::Ref<Object>> internal_construct([[maybe_unused]] ReadonlySpan<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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virtual Vector<FlyString> const& local_variables_names() const { VERIFY_NOT_REACHED(); }
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virtual FunctionParameters const& formal_parameters() const { VERIFY_NOT_REACHED(); }
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protected:
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explicit FunctionObject(Realm&, Object* prototype, MayInterfereWithIndexedPropertyAccess = MayInterfereWithIndexedPropertyAccess::No);
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explicit FunctionObject(Object& prototype, MayInterfereWithIndexedPropertyAccess = MayInterfereWithIndexedPropertyAccess::No);
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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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