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https://github.com/fergalmoran/ladybird.git
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80170887db
This code is non-conforming and will eventually get cleaned out once we implement proper variable bindings. However, this will aid us in improving other parts of the code right now.
57 lines
2.0 KiB
C++
57 lines
2.0 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 <LibJS/Runtime/Environment.h>
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namespace JS {
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class ObjectEnvironment : public Environment {
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JS_ENVIRONMENT(ObjectEnvironment, Environment);
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public:
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enum class IsWithEnvironment {
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No,
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Yes,
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};
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ObjectEnvironment(Object& binding_object, IsWithEnvironment, Environment* outer_environment);
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virtual Optional<Variable> get_from_environment(FlyString const&) const override;
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virtual bool put_into_environment(FlyString const&, Variable) override;
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virtual bool delete_from_environment(FlyString const&) override;
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virtual bool has_binding(FlyString const& name) const override;
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virtual void create_mutable_binding(GlobalObject&, FlyString const& name, bool can_be_deleted) override;
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virtual void create_immutable_binding(GlobalObject&, FlyString const& name, bool strict) override;
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virtual void initialize_binding(GlobalObject&, FlyString const& name, Value) override;
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virtual void set_mutable_binding(GlobalObject&, FlyString const& name, Value, bool strict) override;
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virtual Value get_binding_value(GlobalObject&, FlyString const& name, bool strict) override;
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virtual bool delete_binding(GlobalObject&, FlyString const& name) override;
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// 9.1.1.2.10 WithBaseObject ( ), https://tc39.es/ecma262/#sec-object-environment-records-withbaseobject
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virtual Object* with_base_object() const override
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{
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if (is_with_environment())
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return &m_binding_object;
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return nullptr;
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}
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// [[BindingObject]], The binding object of this Environment Record.
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Object& binding_object() { return m_binding_object; }
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// [[IsWithEnvironment]], Indicates whether this Environment Record is created for a with statement.
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bool is_with_environment() const { return m_with_environment; }
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private:
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virtual void visit_edges(Visitor&) override;
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Object& m_binding_object;
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bool m_with_environment { false };
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};
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}
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