Refactored to do CRTP. Got multi val init working

engine/NBCore/DataSink.hpp

@@ -33,80 +33,99 @@ class BufferedDataProcessor : public DataSink<DataType> {
     using Base = DataSink<DataType>;
 public:
     using Base::Base;
-    bool in(const DataType& val) { this->push(val); return true;}
+
+    bool stop() noexcept { return type_ptr->stop(); }
+    bool run() { return type_ptr->run(); }
+    bool in(const DataType& val) { return type_ptr->in(val); }
 
 protected:
-    virtual unsigned int count() const = 0;
-    virtual void push(const DataType&) = 0;
-    virtual DataType pop() = 0;
-    virtual void flush() = 0;
-    virtual void clear() = 0;
-    virtual bool process(const DataType& val) = 0;
+    unsigned int count() const {
+        return type_ptr->count();
+    }
+    void push(const DataType& val) {
+        type_ptr->push(val);
+    }
+    DataType pop() {
+        return type_ptr->pop();
+    }
+    void flush() {
+        type_ptr->flush();
+    }
+    void clear() {
+        type_ptr->clear();
+    }
+    bool process(const DataType& val) {
+        return type_ptr->process(val);
+    }
 
     using Base::_running;
 
     BufferType _buffer;
+
+private:
+    ProcessorType* const type_ptr = static_cast<ProcessorType*>(this);
+
 };
 
 template<typename DataType, typename ProcessorType>
-class MultithreadedDataProcessor : public BufferedDataProcessor<DataType, ThreadsafeQueue<DataType>, ProcessorType> {
+class MultithreadedDataProcessor 
+: public BufferedDataProcessor<DataType, ThreadsafeQueue<DataType>, ProcessorType> {
     using Base = BufferedDataProcessor<DataType, ThreadsafeQueue<DataType>, ProcessorType>;
 public:
-    ~MultithreadedDataProcessor() { this->stop(); }
+    ~MultithreadedDataProcessor() { type_ptr->stop(); }
 
     bool isRunning() const noexcept override {
-        return this->_running && _runningThread;
+        return this->_running && (_runningThread!=nullptr);
     }
-    bool run() override {
-        if (!isRunning()) {
+    bool run() {
+        if (!type_ptr->isRunning()) {
             this->_running = true;
             _runningThread = std::make_shared<std::thread>([&]{
-                auto this_type = static_cast<ProcessorType*>(this);
-                while(this_type->isRunning()) {
-                    this_type->flush();
+                while(type_ptr->isRunning()) {
+                    flush();
                 }
             });
         }
-        return isRunning();
+        return this->isRunning();
     }
     bool stop() noexcept override {
-        if (isRunning()) {
+        if (type_ptr->isRunning()) {
             this->_running = false;
             _runningThread->join();
             _runningThread = nullptr;
-            auto this_type = static_cast<ProcessorType*>(this);
         }
-        return !isRunning();
+        return !type_ptr->isRunning();
     }
 
 protected:
     using Base::Base;
 
-    unsigned int count() const override {
+    unsigned int count() const {
         return this->_buffer.size();
     }
-    virtual void push(const DataType& val) {
+    void push(const DataType& val) {
         this->_buffer.push(val);
     };
-    virtual DataType pop() {
+    DataType pop() {
         std::shared_ptr<DataType> event;
         this->_buffer.pop(event);
-        process(*event);
+        this->process(*event);
         return *event;
     }
-    virtual void flush() override {
-        auto this_type = static_cast<ProcessorType*>(this);
-        while(this_type->count()) {
-            this_type->pop();
+    void flush() {
+        while(type_ptr->count()) {
+            pop();
         }
     }
-    virtual void clear() override {
+    void clear() {
         this->_buffer.empty();
     }
 
-    virtual bool process(const DataType&) = 0;
-
     std::shared_ptr<std::thread> _runningThread;
+
+private:
+    ProcessorType* type_ptr = static_cast<ProcessorType*>(this);
+
 };
 
 

engine/NBCore/Logger.hpp

@@ -6,6 +6,7 @@
 #include <chrono>
 #include <ostream>
 #include <thread>
+#include <type_traits>
 #include <unordered_map>
 #include <vector>
 
@@ -32,30 +33,90 @@ struct LogEvent{
 typedef std::string (*LogProcessFunction)(const LoggerTimePoint&, const std::string&);
 typedef std::unordered_map<uint8_t, LogProcessFunction> LogProcessFunctionMap;
 
-/* template<typename LogType, typename Logger, typename ST=std::ostream>
-class LoggerBase;
-
-template<typename Logger>
-class LoggerBase<typename Logger::LogType, Logger, typename Logger::StreamType>
-: public MultithreadedDataProcessor<typename Logger::LogType, Logger>{
-protected:
-    typename Logger::StreamType _ostreams;
-}; */
-
-class DebugLogger : public MultithreadedDataProcessor<LogEvent, DebugLogger>{
+template<typename LogType, typename Logger, typename ST=std::ostream*>
+class LoggerBase
+: public MultithreadedDataProcessor<LogType, Logger>{
+    using StreamType = ST;
+    using LoggerType = Logger;
+    using Base = MultithreadedDataProcessor<LogType, LoggerType>;
 public:
-    DebugLogger(std::ostream& stream) : _ostream(&stream) {}
+    bool run() {
+        if (!type_ptr->isRunning()) {
+            this->_running = true;
+            this->_runningThread = std::make_shared<std::thread>([&]{
+                while(type_ptr->isRunning()) {
+                    type_ptr->flush();
+                }
+                type_ptr->flush();
+            });
+        }
+        return type_ptr->isRunning();
+    }
+protected:
+    LoggerBase() = default;
 
-    ~DebugLogger() { stop(); }
+    StreamType _ostream;
 
-    virtual bool stop() noexcept override {
-        auto ret = MultithreadedDataProcessor<LogEvent, DebugLogger>::stop();
-        flush();
-        return ret;
+private:
+    LoggerType* type_ptr = static_cast<LoggerType*>(this);
+};
+
+template <typename T, typename... Pack>
+struct PackIsType;
+
+template <typename T, typename PackType>
+struct PackIsType<T, PackType> {
+    const bool value = std::is_base_of<T, PackType>::value;
+};
+
+template <typename T, typename FirstPack, typename... Pack>
+struct PackIsType<T, FirstPack, Pack...> {
+    const bool value = std::is_base_of<T, FirstPack>::value && PackIsType<T, Pack...>::value;
+};
+
+template <typename T, typename Pack1, typename... Pack>
+struct StreamRefToPtrVec {
+    StreamRefToPtrVec(std::vector<T*> _vec, Pack1& p1, Pack&... packs)
+    : vec(_vec) {
+        static_assert(std::is_base_of<T, Pack1>::value);
+        vec.push_back(&p1);
+        vec = StreamRefToPtrVec<T, Pack...>(vec, packs...).vec;
     }
 
+    StreamRefToPtrVec(Pack1& p1, Pack&... packs)
+    : StreamRefToPtrVec({}, p1, packs...) {}
+
+    std::vector<T*> vec;
+};
+
+template <typename T, typename Pack>
+struct StreamRefToPtrVec<T, Pack> {
+    StreamRefToPtrVec(std::vector<T*> _vec, Pack& p1)
+    : vec(_vec) {
+        static_assert(std::is_base_of<T, Pack>::value);
+        vec.push_back(&p1);
+    }
+
+    StreamRefToPtrVec(Pack& p1)
+    : StreamRefToPtrVec({}, p1) {}
+
+    std::vector<T*> vec;
+};
+
+template <typename LT>
+class DebugLogger : public LoggerBase<LogEvent, LT, std::vector<std::ostream*>>{
+    using StreamType = std::vector<std::ostream*>;
+    using LoggerType = LT;
+    using Base = LoggerBase<LogEvent, LoggerType, StreamType>;
+public:
+
+    template<typename... ST>
+    DebugLogger(ST&... streams) : _ostream(StreamRefToPtrVec<std::ostream, ST...>(streams...).vec) {}
+
+    ~DebugLogger() { type_ptr->stop(); }
+
     void log(const std::string& msg, const uint8_t& lvl=0xFF) {
-        push(LogEvent{
+        type_ptr->push(LogEvent{
             std::chrono::system_clock::now(),
             lvl,
             msg,
@@ -66,27 +127,47 @@ public:
 
     template <size_t N>
     void log(char const(&msg) [N], const uint8_t& lvl=0xFF) {
-        log(std::string(msg), lvl);
+        type_ptr->log(std::string(msg), lvl);
     }
 
     void log(const std::exception& err, const uint8_t& lvl=0xFF) {
-        log(err.what(), lvl);
+        type_ptr->log(err.what(), lvl);
     }
 
     template<typename U>
-    void warn(const U& val, const uint8_t& lvl=0x01) { log(val, lvl); }
+    void warn(const U& val, const uint8_t& lvl=0x01) { type_ptr->log(val, lvl); }
 
     template<typename U>
-    void error(const U& val, const uint8_t& lvl=0xFF) { log(val, lvl); }
+    void error(const U& val) { type_ptr->log(val, 0xFF); }
 
 protected:
-    std::ostream* const _ostream;
+    std::vector<std::ostream*> _ostream;
 
-    virtual bool process(const LogEvent& msg) override {
-        *_ostream << msg.pid << " - " << msg.tid << " : " << msg.msg << "\n";
+private:
+    LoggerType* type_ptr = static_cast<LoggerType*>(this);
+
+};
+
+class DefaultDebugLogger : public DebugLogger<DefaultDebugLogger> {
+    using LoggerType = DefaultDebugLogger;
+    using Base = DebugLogger<DefaultDebugLogger>;
+public:
+    using Base::Base;
+
+    ~DefaultDebugLogger() { stop(); }
+
+    friend class BufferedDataProcessor<LogEvent, ThreadsafeQueue<LogEvent>, DefaultDebugLogger>;
+
+protected:
+    using Base::_ostream;
+
+    bool process(const LogEvent& msg) {
+        for (const auto os : this->_ostream) {
+            (*os) << msg.pid << " - " << msg.tid << " : " << msg.msg << "\n";
+        }
         return true;
     }
-    
+
 };
 
 /* class BasicLogger : public LoggerBase<BasicLogger> {

engine/NBCore/tests/testErrors.cpp

@@ -30,11 +30,11 @@ const ErrorCodeMap TestError::ErrorMessages{
 TEST(ErrorTest, Test) {
     EXPECT_EQ(1, 1);
 
-    nb::DebugLogger log(std::cout);
-    ASSERT_TRUE(log.run());
-    ASSERT_TRUE(log.isRunning());
-    while (!log.isRunning()){
+    nb::DefaultDebugLogger logr(std::cout, std::cout, std::cout);
+    ASSERT_TRUE(logr.run());
+    ASSERT_TRUE(logr.isRunning());
+    while (!logr.isRunning()){
         1+1;
     }
-    log.log("Hey!");
+    logr.log("Hey!");
 }