2d4eb40f59
This patch adds a new ArgumentsObject class to represent what the spec calls "Arguments Exotic Objects" These are constructed by the new CreateMappedArgumentsObject when the `arguments` identifier is resolved in a callee context. The implementation is incomplete and doesn't yet support mapping of the parameter variables to the indexed properties of `arguments`.
51 lines
2.1 KiB
C++
51 lines
2.1 KiB
C++
/*
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* Copyright (c) 2020-2021, 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/Forward.h>
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#include <LibJS/AST.h>
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#include <LibJS/Forward.h>
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#include <LibJS/Runtime/GlobalObject.h>
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#include <LibJS/Runtime/Value.h>
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namespace JS {
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DeclarativeEnvironmentRecord* new_declarative_environment(EnvironmentRecord&);
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ObjectEnvironmentRecord* new_object_environment(Object&, bool is_with_environment, EnvironmentRecord*);
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EnvironmentRecord& get_this_environment(VM&);
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Object* get_super_constructor(VM&);
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Value require_object_coercible(GlobalObject&, Value);
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size_t length_of_array_like(GlobalObject&, Object const&);
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MarkedValueList create_list_from_array_like(GlobalObject&, Value, Function<Result<void, ErrorType>(Value)> = {});
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FunctionObject* species_constructor(GlobalObject&, Object const&, FunctionObject& default_constructor);
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GlobalObject* get_function_realm(GlobalObject&, FunctionObject const&);
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Object* get_prototype_from_constructor(GlobalObject&, FunctionObject const& constructor, Object* (GlobalObject::*intrinsic_default_prototype)());
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Object* create_unmapped_arguments_object(GlobalObject&, Vector<Value> const& arguments);
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Object* create_mapped_arguments_object(GlobalObject&, FunctionObject&, Vector<FunctionNode::Parameter> const&, Vector<Value> const& arguments, EnvironmentRecord&);
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enum class CallerMode {
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Strict,
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NonStrict
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};
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enum class EvalMode {
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Direct,
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Indirect
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};
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Value perform_eval(Value, GlobalObject&, CallerMode, EvalMode);
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// 10.1.13 OrdinaryCreateFromConstructor ( constructor, intrinsicDefaultProto [ , internalSlotsList ] ), https://tc39.es/ecma262/#sec-ordinarycreatefromconstructor
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template<typename T, typename... Args>
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T* ordinary_create_from_constructor(GlobalObject& global_object, FunctionObject const& constructor, Object* (GlobalObject::*intrinsic_default_prototype)(), Args&&... args)
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{
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auto& vm = global_object.vm();
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auto* prototype = get_prototype_from_constructor(global_object, constructor, intrinsic_default_prototype);
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if (vm.exception())
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return nullptr;
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return global_object.heap().allocate<T>(global_object, forward<Args>(args)..., *prototype);
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}
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}
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