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IProtocol.h
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IProtocol.h
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/**The MIT License (MIT)
Copyright (c) 2018 by AleksanderSergeevich
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.
*/
#ifndef IPROTOCOL_H
#define IPROTOCOL_H
#pragma once
#include <QtCore>
class IMsgPacket {
public:
virtual ~IMsgPacket() {}
virtual QByteArray get_msg() = 0;
virtual void set_msg_fields_values(const QLinkedList<QVariant>& args) = 0;
};
class IMsgFactory {
public:
virtual ~IMsgFactory() {}
virtual bool create_msg(const QString& msg_type, IMsgPacket& msg_packet) = 0;
};
struct Questionnaire {
struct QuestionnaireField {
virtual ~QuestionnaireField() {
reset();
}
void reset() {
if(!fields.isEmpty()) fields.clear();
}
unsigned int msg_id;
QMap<QString, QVariant> fields;
};
virtual ~Questionnaire() {
reset();
}
void reset() {
if(fields_store.isEmpty()) return;
foreach(QSharedPointer<QuestionnaireField> field_ptr, fields_store) {
field_ptr->reset();
}
fields_store.clear();
}
QLinkedList<QSharedPointer<QuestionnaireField> > fields_store;
};
class ISessionStates {
public:
enum State {
Listen,
Speak,
Ignore
};
ISessionStates() : msgs_info_ptr(new Questionnaire) {}
virtual ~ISessionStates() {}
virtual bool calc_new_state(const QSharedPointer<IMsgPacket> received_msg, State& new_state) = 0;
virtual bool get_new_msg(QByteArray& send_msg) = 0;
virtual long get_timeout() = 0;
QSharedPointer<Questionnaire> get_retrieved_info() const {
return msgs_info_ptr;
}
private:
QSharedPointer<Questionnaire> msgs_info_ptr;
};
class BaseProtocol {
public:
virtual ~BaseProtocol() {}
void set_protocol_id(const QString protocol_id_) {
protocol_id = protocol_id_;
}
const QString get_protocol_id() const {
return protocol_id;
}
void set_state_holder(QSharedPointer<ISessionStates>& state_ptr_) {
state_ptr = state_ptr_;
}
const QSharedPointer<ISessionStates> get_state_holder() const {
return state_ptr;
}
virtual bool set_new_msg(const QSharedPointer<IMsgPacket> received_msg, QByteArray& send_msg, long& timeout) {
ISessionStates::State new_state;
if(!state_ptr->calc_new_state(received_msg, new_state)) return false;
switch(new_state) {
case ISessionStates::Listen:
if(!send_msg.isEmpty()) send_msg.clear();
timeout = 0;
break;
case ISessionStates::Speak:
if(!state_ptr->get_new_msg(send_msg)) return false;
break;
case ISessionStates::Ignore:
timeout = state_ptr->get_timeout();
break;
default:
break;
}
return true;
}
private:
QString protocol_id;
QSharedPointer<ISessionStates> state_ptr;
};
#endif // IPROTOCOL_H