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/*
* This source code is released into the public domain.
*/
module;
#include <expected>
#include <filesystem>
#include <string>
export module liblfvm:disk_config;
import nihil;
import nihil.ucl;
import :context;
namespace lfvm {
/*
* Represents a disk which can be attached to the VM.
*/
export struct disk_config {
/*
* The name of this disk. The name is arbitrary, it doesn't need
* to match the filename.
*/
[[nodiscard]] auto name(this disk_config const &) -> std::string_view;
/*
* The on-disk filename of this disk. This is verified to exist
* at creation time, but it may not exist later, e.g. if the user
* deletes the file.
*/
[[nodiscard]] auto path(this disk_config const &)
-> std::filesystem::path const &;
/*
* Check if the disk's backing file exists.
*/
[[nodiscard]] auto exists(this disk_config const &) -> bool;
/*
* Serialize a disk to a UCL string.
*/
[[nodiscard]] auto serialize(this disk_config const &)
-> std::expected<std::string, nihil::error>;
/*
* Deserialize a UCL string into a disk.
*/
[[nodiscard]] static auto deserialize(std::string_view)
-> std::expected<disk_config, nihil::error>;
private:
friend auto make_disk_config(std::string_view, std::string_view)
-> std::expected<disk_config, nihil::error>;
disk_config(std::string_view name, std::filesystem::path path);
std::string m_name;
std::filesystem::path m_path;
};
/*
* Create a new disk from a name and path.
*/
export [[nodiscard]] auto make_disk_config(std::string_view name,
std::string_view path)
-> std::expected<disk_config, nihil::error>;
/*
* Load an existing disk.
*/
export [[nodiscard]] auto disk_load(context const &, std::string_view name)
-> std::expected<disk_config, nihil::error>;
/*
* Save a new disk.
*/
export [[nodiscard]] auto disk_create(context const &, disk_config const &)
-> std::expected<void, nihil::error>;
/*
* Save an existing disk.
*/
export [[nodiscard]] auto disk_save(context const &, disk_config const &)
-> std::expected<void, nihil::error>;
/*
* List existing disks.
*/
export [[nodiscard]] auto disk_list(context const &)
-> std::expected<std::vector<std::string>, nihil::error>;
} // namespace lfvm
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