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/*
* Copyright (c) 2022, David Tuin <davidot@serenityos.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#pragma once
#include <LibJS/Module.h>
#include <LibJS/Runtime/DeclarativeEnvironment.h>
#include <LibJS/Runtime/Environment.h>
namespace JS {
// 9.1.1.5 Module Environment Records, https://tc39.es/ecma262/#sec-module-environment-records
class ModuleEnvironment final : public DeclarativeEnvironment {
JS_ENVIRONMENT(ModuleEnvironment, DeclarativeEnvironment);
public:
// Note: Module Environment Records support all of the declarative Environment Record methods listed
// in Table 18 and share the same specifications for all of those methods except for
// GetBindingValue, DeleteBinding, HasThisBinding and GetThisBinding.
// In addition, module Environment Records support the methods listed in Table 24.
virtual ThrowCompletionOr<Value> get_binding_value(VM&, FlyString const& name, bool strict) override;
virtual ThrowCompletionOr<bool> delete_binding(VM&, FlyString const& name) override;
virtual bool has_this_binding() const final { return true; }
virtual ThrowCompletionOr<Value> get_this_binding(VM&) const final;
ThrowCompletionOr<void> create_import_binding(FlyString name, Module* module, FlyString binding_name);
private:
explicit ModuleEnvironment(Environment* outer_environment);
struct IndirectBinding {
FlyString name;
Module* module;
FlyString binding_name;
};
IndirectBinding const* get_indirect_binding(FlyString const& name) const;
virtual Optional<BindingAndIndex> find_binding_and_index(FlyString const& name) const override;
// FIXME: Since we always access this via the name this could be a map.
Vector<IndirectBinding> m_indirect_bindings;
};
}
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