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db480b1f0c
This is required for upcoming change where we want to emit ThrowIfTDZ for assignment expressions only for lexical declarations.
58 lines
2.3 KiB
C++
58 lines
2.3 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/LocalVariable.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<void> get_stack_frame_size([[maybe_unused]] size_t& registers_and_constants_and_locals_count, [[maybe_unused]] size_t& argument_count) { return {}; }
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virtual ThrowCompletionOr<Value> internal_call(ExecutionContext&, Value this_argument) = 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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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<LocalVariable> 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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[[nodiscard]] GC::Ref<PrimitiveString> make_function_name(Variant<PropertyKey, PrivateName> const&, Optional<StringView> const& prefix);
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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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template<>
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inline bool Object::fast_is<FunctionObject>() const { return is_function(); }
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}
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