/*

 * Copyright (c) 2021, David Tuin <davidot@serenityos.org>

 *

 * SPDX-License-Identifier: BSD-2-Clause

 */

#pragma once

#include <AK/DeprecatedFlyString.h>

#include <AK/StringView.h>

#include <AK/Vector.h>

#include <LibJS/Heap/Cell.h>

#include <LibJS/Heap/CellAllocator.h>

namespace JS {

struct PrivateName {

    PrivateName() = default;

    PrivateName(u64 unique_id, DeprecatedFlyString description)

        : unique_id(unique_id)

        , description(move(description))

    {

    }

    u64 unique_id { 0 };

    DeprecatedFlyString description;

    bool operator==(PrivateName const& rhs) const;

};

class PrivateEnvironment : public Cell {

    JS_CELL(PrivateEnvironment, Cell);

    JS_DECLARE_ALLOCATOR(PrivateEnvironment);

public:

    PrivateName resolve_private_identifier(DeprecatedFlyString const& identifier) const;

    void add_private_name(DeprecatedFlyString description);

    PrivateEnvironment* outer_environment() { return m_outer_environment; }

    PrivateEnvironment const* outer_environment() const { return m_outer_environment; }

private:

    explicit PrivateEnvironment(PrivateEnvironment* parent);

    virtual void visit_edges(Visitor&) override;

    auto find_private_name(DeprecatedFlyString const& description) const

    {

        return m_private_names.find_if([&](PrivateName const& private_name) {

            return private_name.description == description;

        });

    }

    static u64 s_next_id;

    GCPtr<PrivateEnvironment> m_outer_environment; // [[OuterEnv]]

    Vector<PrivateName> m_private_names;           // [[Names]]

    u64 m_unique_id;

};

}