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/*
* Copyright (c) 2020-2021, Andreas Kling <kling@serenityos.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#pragma once
#include <LibJS/Runtime/Environment.h>
namespace JS {
class ObjectEnvironment : public Environment {
JS_ENVIRONMENT(ObjectEnvironment, Environment);
public:
enum class IsWithEnvironment {
No,
Yes,
};
virtual ThrowCompletionOr<bool> has_binding(DeprecatedFlyString const& name, Optional<size_t>* = nullptr) const override;
virtual ThrowCompletionOr<void> create_mutable_binding(VM&, DeprecatedFlyString const& name, bool can_be_deleted) override;
virtual ThrowCompletionOr<void> create_immutable_binding(VM&, DeprecatedFlyString const& name, bool strict) override;
virtual ThrowCompletionOr<void> initialize_binding(VM&, DeprecatedFlyString const& name, Value, Environment::InitializeBindingHint) override;
virtual ThrowCompletionOr<void> set_mutable_binding(VM&, DeprecatedFlyString const& name, Value, bool strict) override;
virtual ThrowCompletionOr<Value> get_binding_value(VM&, DeprecatedFlyString const& name, bool strict) override;
virtual ThrowCompletionOr<bool> delete_binding(VM&, DeprecatedFlyString const& name) override;
// 9.1.1.2.10 WithBaseObject ( ), https://tc39.es/ecma262/#sec-object-environment-records-withbaseobject
virtual Object* with_base_object() const override
{
if (is_with_environment())
return &m_binding_object;
return nullptr;
}
// [[BindingObject]], The binding object of this Environment Record.
Object& binding_object() { return m_binding_object; }
// [[IsWithEnvironment]], Indicates whether this Environment Record is created for a with statement.
bool is_with_environment() const { return m_with_environment; }
private:
ObjectEnvironment(Object& binding_object, IsWithEnvironment, Environment* outer_environment);
virtual void visit_edges(Visitor&) override;
Object& m_binding_object;
bool m_with_environment { false };
};
}
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