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https://github.com/RGBCube/serenity
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1f8b6ac3c3
These represent the outermost scope in the environment record hierarchy. The spec says they should be a "composite" of two things: - An ObjectEnvironmentRecord wrapping the global object - A DeclarativeEnvironmentRecord for other declarations It's not yet clear to me how this should work, so this patch only implements the first part, an object record wrapping the global object.
42 lines
1.1 KiB
C++
42 lines
1.1 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/Object.h>
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namespace JS {
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struct Variable {
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Value value;
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DeclarationKind declaration_kind;
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};
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class EnvironmentRecord : public Object {
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JS_OBJECT(EnvironmentRecord, Object);
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public:
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virtual Optional<Variable> get_from_environment_record(FlyString const&) const = 0;
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virtual void put_into_environment_record(FlyString const&, Variable) = 0;
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virtual bool delete_from_environment_record(FlyString const&) = 0;
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virtual bool has_this_binding() const { return false; }
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virtual Value get_this_binding(GlobalObject&) const { return {}; }
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// [[OuterEnv]]
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EnvironmentRecord* outer_environment() { return m_outer_environment; }
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EnvironmentRecord const* outer_environment() const { return m_outer_environment; }
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protected:
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explicit EnvironmentRecord(EnvironmentRecord* parent);
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virtual void visit_edges(Visitor&) override;
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private:
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EnvironmentRecord* m_outer_environment { nullptr };
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};
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}
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