d1ffeaf66d
This patch implements the IsSimpleParameterList static semantics for ordinary function objects. We now also create an unmapped arguments object for callee contexts with non-simple parameter lists, instead of only doing it in strict mode. Covered by test262.
81 lines
2.4 KiB
C++
81 lines
2.4 KiB
C++
/*
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* Copyright (c) 2020-2021, Andreas Kling <kling@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/String.h>
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#include <LibJS/Runtime/Object.h>
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namespace JS {
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class FunctionObject : public Object {
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JS_OBJECT(Function, Object);
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public:
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enum class ConstructorKind {
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Base,
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Derived,
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};
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virtual ~FunctionObject();
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virtual void initialize(GlobalObject&) override { }
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virtual Value call() = 0;
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virtual Value construct(FunctionObject& new_target) = 0;
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virtual const FlyString& name() const = 0;
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virtual FunctionEnvironmentRecord* create_environment_record(FunctionObject&) = 0;
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BoundFunction* bind(Value bound_this_value, Vector<Value> arguments);
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Value bound_this() const { return m_bound_this; }
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const Vector<Value>& bound_arguments() const { return m_bound_arguments; }
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Value home_object() const { return m_home_object; }
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void set_home_object(Value home_object) { m_home_object = home_object; }
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ConstructorKind constructor_kind() const { return m_constructor_kind; };
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void set_constructor_kind(ConstructorKind constructor_kind) { m_constructor_kind = constructor_kind; }
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virtual bool is_strict_mode() const { return false; }
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// [[Environment]]
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// The Environment Record that the function was closed over.
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// Used as the outer environment when evaluating the code of the function.
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virtual EnvironmentRecord* environment() { return nullptr; }
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enum class ThisMode : u8 {
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Lexical,
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Strict,
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Global,
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};
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// [[ThisMode]]
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ThisMode this_mode() const { return m_this_mode; }
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void set_this_mode(ThisMode this_mode) { m_this_mode = this_mode; }
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// This is for IsSimpleParameterList (static semantics)
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bool has_simple_parameter_list() const { return m_has_simple_parameter_list; }
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protected:
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virtual void visit_edges(Visitor&) override;
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explicit FunctionObject(Object& prototype);
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FunctionObject(Value bound_this, Vector<Value> bound_arguments, Object& prototype);
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void set_has_simple_parameter_list(bool b) { m_has_simple_parameter_list = b; }
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private:
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virtual bool is_function() const override { return true; }
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Value m_bound_this;
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Vector<Value> m_bound_arguments;
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Value m_home_object;
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ConstructorKind m_constructor_kind = ConstructorKind::Base;
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ThisMode m_this_mode { ThisMode::Global };
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bool m_has_simple_parameter_list { false };
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};
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}
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