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54 lines
2 KiB
C++
54 lines
2 KiB
C++
/*
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* Copyright (c) 2020-2021, Andreas Kling <andreas@ladybird.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 final : public Environment {
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JS_ENVIRONMENT(ObjectEnvironment, Environment);
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GC_DECLARE_ALLOCATOR(ObjectEnvironment);
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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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virtual ThrowCompletionOr<bool> has_binding(FlyString const& name, Optional<size_t>* = nullptr) const override;
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virtual ThrowCompletionOr<void> create_mutable_binding(VM&, FlyString const& name, bool can_be_deleted) override;
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virtual ThrowCompletionOr<void> create_immutable_binding(VM&, FlyString const& name, bool strict) override;
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virtual ThrowCompletionOr<void> initialize_binding(VM&, FlyString const& name, Value, Environment::InitializeBindingHint) override;
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virtual ThrowCompletionOr<void> set_mutable_binding(VM&, FlyString const& name, Value, bool strict) override;
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virtual ThrowCompletionOr<Value> get_binding_value(VM&, FlyString const& name, bool strict) override;
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virtual ThrowCompletionOr<bool> delete_binding(VM&, 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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ObjectEnvironment(Object& binding_object, IsWithEnvironment, Environment* outer_environment);
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virtual void visit_edges(Visitor&) override;
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GC::Ref<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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