merged AI doc, some new pages
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/*! \file piparsehelper.h
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* \ingroup IO
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* \~\brief
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* \~english Helper class to automate structs receive
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* \~russian Класс для автоматизации приема структур
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*/
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//! \~\file piparsehelper.h
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//! \~\ingroup IO-Utils
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//! \~\brief
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//! \~english Key-dispatch helper for deserializing packets into callbacks
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//! \~russian Вспомогательный класс диспетчеризации по ключу для десериализации пакетов в обработчики
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/*
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PIP - Platform Independent Primitives
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Helper class to automate structs receive
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@@ -30,60 +29,45 @@
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#include "pip_io_utils_export.h"
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/** \class PIParseHelper
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* \brief Helper class to automate structs receive
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*
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*
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* \section PIParseHelper_synopsis Synopsis
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* This class helps to deserialize and invoke neccessarily methods.
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*
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* Data packets with header and various data types can be automated by this class.
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* Every key value mapped to object member function, lambda-function or functor.
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*
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* This class can remove \b switch-case with deserialization code and
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* replace it with several \a assign() calls, binded to ready-to-use event handlers.
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* Moreover data type automatic takes from event handler or lambda argument. One should
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* only make \"PIByteArray & operator <<()\" with used types, deserialization will be
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* performed by %PIParseHelper.
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*
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*
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* \section PIParseHelper_usage Usage
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*
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* Create instance of %PIParseHelper, or subclass.
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*
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* In \a assign() methods you can use object member function, lambda-function
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* or functor with 0 or 1 arguments,
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*
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*
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* \section PIParseHelper_lambda Lambda-functions
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* \code assign(1, [this](const SomeStruct & s){}) \endcode
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*
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*
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* \section PIParseHelper_examples Examples
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* First example describes subclass variant. As one can see, it`s a single place to change
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* type of received data - event handler argument.
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* \snippet piparsehelper.cpp 0
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*
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* Second example show separate variant:
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* \snippet piparsehelper.cpp 1
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*
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**/
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//! \~\ingroup IO-Utils
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//! \~\brief
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//! \~english Maps packet keys to handlers and deserializes payloads before invocation.
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//! \~russian Связывает ключи пакетов с обработчиками и десериализует полезную нагрузку перед вызовом.
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//! \~\details
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//! \~english
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//! %PIParseHelper helps replace manual switch-based packet dispatch with a set of
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//! \a assign() calls. Handlers may be plain callbacks, functors or object member functions.
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//! Payload types are restored from %PIByteArray by the selected handler signature.
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//! \n
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//! \n Example:
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//! \~russian
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//! %PIParseHelper помогает заменить ручную диспетчеризацию пакетов через switch
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//! набором вызовов \a assign(). Обработчиками могут быть обычные callback-функции,
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//! функторы или методы объекта. Тип полезной нагрузки восстанавливается из %PIByteArray
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//! по сигнатуре выбранного обработчика.
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//! \n
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//! \n Пример:
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//!
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//! \~\snippet piparsehelper.cpp 0
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//! \~\snippet piparsehelper.cpp 1
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template<typename Key>
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class PIParseHelper {
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public:
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//! \brief Construct %PIParseHelper
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//! \~english Constructs empty parser helper.
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//! \~russian Создает пустой вспомогательный парсер.
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PIParseHelper() {}
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//! \brief Assign key \"key\" to lambda-function \"func\" without arguments
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//! \~english Assigns key "key" to callback "func" without payload arguments.
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//! \~russian Связывает ключ "key" с callback-функцией "func" без аргументов полезной нагрузки.
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void assign(Key key, std::function<void()> func) {
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auto lf = [func](PIByteArray) { func(); };
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functions[key] << lf;
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}
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//! \brief Assign key \"key\" to lambda-function \"func\" with 1 argument
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//! \~english Assigns key "key" to callback "func" with one deserialized argument.
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//! \~russian Связывает ключ "key" с callback-функцией "func" с одним десериализуемым аргументом.
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template<typename T>
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void assign(Key key, std::function<void(const T &)> func) {
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auto lf = [func](PIByteArray data) {
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@@ -97,7 +81,8 @@ public:
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}
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//! \brief Assign key \"key\" to member function of object \"obj\" without arguments
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//! \~english Assigns key "key" to zero-argument member function of object "obj".
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//! \~russian Связывает ключ "key" с методом объекта "obj" без аргументов.
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template<typename O>
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void assign(Key key, O * obj, void (O::*member_func)()) {
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auto lf = [member_func, obj](PIByteArray) { (obj->*member_func)(); };
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@@ -105,7 +90,8 @@ public:
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}
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//! \brief Assign key \"key\" to member function of object \"obj\" with 1 argument
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//! \~english Assigns key "key" to member function of object "obj" with one deserialized argument.
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//! \~russian Связывает ключ "key" с методом объекта "obj" с одним десериализуемым аргументом.
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template<typename T, typename O>
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void assign(Key key, O * obj, void (O::*member_func)(const T &)) {
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auto lf = [member_func, obj](PIByteArray data) {
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@@ -119,14 +105,16 @@ public:
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}
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//! \brief Assign key \"key\" to functor \"func\" with 0 or 1 argument
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//! \~english Assigns key "key" to functor or lambda with zero or one argument.
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//! \~russian Связывает ключ "key" с функтором или lambda с нулем или одним аргументом.
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template<typename L>
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void assign(Key key, L func) {
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return assign(key, toStdFunction(func));
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}
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//! \brief Deserialize data and invoke assigned to \"key\" methods
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//! \~english Deserializes payload "ba" and invokes handlers assigned to "key".
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//! \~russian Десериализует полезную нагрузку "ba" и вызывает обработчики, назначенные ключу "key".
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void parse(Key key, PIByteArray ba) {
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auto fl = functions.value(key);
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for (auto f: fl)
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