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/*
* InspIRCd -- Internet Relay Chat Daemon
*
* Copyright (C) 2019 Sadie Powell <sadie@witchery.services>
*
* This file is part of InspIRCd. InspIRCd is free software: you can
* redistribute it and/or modify it under the terms of the GNU General Public
* License as published by the Free Software Foundation, version 2.
*
* This program is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
* FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
* details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#pragma once
/** Base class for serializable elements. */
class CoreExport Serializable
{
protected:
Serializable() { }
public:
/** Encapsulates a chunk of serialised data. */
class CoreExport Data
{
public:
/** Maps keys to serialised data. */
typedef insp::flat_map<std::string, Data> ChildMap;
/** Maps keys to simple values. */
typedef insp::flat_map<std::string, std::string> EntryMap;
private:
/** A mapping of keys to serialised data. */
ChildMap children;
/** A mapping of keys to values. */
EntryMap entries;
public:
/** Retrieves the child elements. */
const ChildMap& GetChildren() const { return children; }
ChildMap& GetChildren() { return children; }
/** Retrieves the key/value map. */
const EntryMap& GetEntries() const { return entries; }
EntryMap& GetEntries() { return entries; }
/** Loads the serialised data with the specified key.
* @param key The key by which this serialised data is identified.
* @param out The location to store the serialised data for this key.
*/
Data& Load(const std::string& key, Data& out);
/** Loads the value with the specified key.
* @param key The key by which this data is identified.
* @param out The location to store the value for this keu
*/
Data& Load(const std::string& key, std::string& out);
/** Loads the value with the specified key. The value will be converted to the specified type.
* @param key The key by which this data is identified.
* @param out The location to store the value for this key.
*/
template <typename T>
Data& Load(const std::string& key, T& out)
{
// Attempt to load as a string.
std::string str;
Load(key, str);
std::stringstream ss(str);
ss >> out;
return *this;
}
/** Stores the serialised data against the specified key.
* @param key The key by which this serialised data should be stored against.
* @param out The serialised data to store.
*/
Data& Store(const std::string& key, const Data& value);
/** Stores the value against the specified key.
* @param key The key by which this value should be stored against.
* @param out The value to store.
*/
Data& Store(const std::string& key, const std::string& value);
/** Stores the value against the specified key. The value will be converted to a string using ConvToStr.
* @param key The key by which this value should be stored against.
* @param out The value to store.
*/
template <typename T>
Data& Store(const std::string& key, const T& value)
{
return Store(key, ConvToStr(value));
}
};
/** Deserializes the specified Data instance into this object.
* @param data The Data object to deserialize from.
* @return True if the deserialisation succeeded; otherwise, false.
*/
virtual bool Deserialize(Data& data) = 0;
/** Serializes the this object into the specified Data obect.
* @param data The Data object to serialize to.
* @return True if the serialisation succeeded; otherwise, false.
*/
virtual bool Serialize(Data& data) = 0;
};
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