添加AOP、IoC

CMakeLists.txt

@@ -12,7 +12,7 @@ set(CMAKE_CXX_EXTENSIONS OFF)
 project(cpp_start LANGUAGES CXX VERSION 1.0.0)
 
 # 设置编译器参数
-set(CMAKE_CXX_FLAGS "-fno-elide-constructors") # 关闭编译优化
+#set(CMAKE_CXX_FLAGS "-fno-elide-constructors") # 关闭编译优化
 
 # 消息提示
 message(STATUS "message from cmake file！")
@@ -23,16 +23,19 @@ add_executable(${PROJECT_NAME} src/main.cpp)
 aux_source_directory(src/aspect ASPECT_DIR)
 aux_source_directory(src/base BASE_DIR)
 aux_source_directory(src/util UTIL_DIR)
+aux_source_directory(src/ioc IOC_DIR)
+aux_source_directory(src/bus BUS_DIR)
 aux_source_directory(src/test TEST_DIR)
 
 target_include_directories(${PROJECT_NAME} PRIVATE
-
 )
 
 target_sources(${PROJECT_NAME} PRIVATE
         ${ASPECT_DIR}
         ${TEST_DIR}
         ${BASE_DIR}
+        ${IOC_DIR}
+        ${BUS_DIR}
         ${UTIL_DIR}
 )
 

src/base/any.h

@@ -0,0 +1,86 @@
+
+#ifndef CPP_START_ANY_H
+#define CPP_START_ANY_H
+
+#include <memory>
+#include <typeindex>
+#include <iostream>
+#include <sstream>
+#include <string>
+
+using namespace std;
+
+struct Any {
+    Any() : m_tpIndex(std::type_index(typeid(void))) {}
+
+    Any(const Any &that) : m_ptr(that.Clone()), m_tpIndex(that.m_tpIndex) {}
+
+    Any(Any &&that) noexcept: m_ptr(std::move(that.m_ptr)), m_tpIndex(that.m_tpIndex) {}
+
+    //创建智能指针时，对于一般的类型，通过std::decay来移除引用和cv符，从而获取原始类型
+    template<typename U, class = typename std::enable_if<!std::is_same<typename std::decay<U>::type, Any>::value, U>::type>
+    Any(U &&value) : m_ptr(new Derived<typename std::decay<U>::type>(std::forward<U>(value))),
+                     m_tpIndex(type_index(typeid(typename std::decay<U>::type))) {}
+
+    bool IsNull() const { return !bool(m_ptr); }
+
+    template<class U>
+    bool Is() const {
+        return m_tpIndex == type_index(typeid(U));
+    }
+
+    //将Any转换为实际的类型
+    template<class U>
+    U &AnyCast() {
+        if (!Is<U>()) {
+            cout << "can not cast " << typeid(U).name() << " to " << m_tpIndex.name() << endl;
+            throw bad_cast();
+        }
+
+        auto derived = dynamic_cast<Derived <U> *> (m_ptr.get());
+        return derived->m_value;
+    }
+
+    Any &operator=(const Any &a) {
+        if (m_ptr == a.m_ptr)
+            return *this;
+
+        m_ptr = a.Clone();
+        m_tpIndex = a.m_tpIndex;
+        return *this;
+    }
+
+private:
+    struct Base;
+    typedef std::unique_ptr<Base> BasePtr;
+
+    struct Base {
+        virtual ~Base() = default;
+
+        virtual BasePtr Clone() const = 0;
+    };
+
+    template<typename T>
+    struct Derived : Base {
+        template<typename U>
+        Derived(U &&value) : m_value(std::forward<U>(value)) {}
+
+        BasePtr Clone() const override {
+            return BasePtr(new Derived<T>(m_value));
+        }
+
+        T m_value;
+    };
+
+    BasePtr Clone() const {
+        if (m_ptr != nullptr)
+            return m_ptr->Clone();
+
+        return nullptr;
+    }
+
+    BasePtr m_ptr;
+    std::type_index m_tpIndex;
+};
+
+#endif //CPP_START_ANY_H

src/base/function_traits.h

@@ -0,0 +1,82 @@
+
+#ifndef CPP_START_FUNCTION_TRAITS_H
+#define CPP_START_FUNCTION_TRAITS_H
+
+#include <functional>
+#include <tuple>
+
+//function_traits 获取普通函数、函数指针、std::function、函数对象以及成员函数的函数类型、返回类型、参数个数和参数的具体类型。
+
+//转换为std::function和函数指针
+template<typename T>
+struct function_traits;
+
+//普通函数
+//返回类型Ret 参数列表Args
+template<typename Ret, typename... Args>
+struct function_traits<Ret(Args...)> {
+public:
+    enum {
+        arity = sizeof...(Args)
+    }; //enum 定义参数列表的个数arity常量
+    //定义别名
+    typedef Ret function_type(Args...);
+
+    typedef Ret return_type;
+    using std_function_type = std::function<function_type>;
+
+    typedef Ret (*pointer)(Args...);
+
+    template<size_t I>
+    struct args {
+        //static_assert(常量表达式，错误提示字符串) 静态断言，
+        static_assert(I < arity, "index is out of range,index less than sizeof Args");
+
+        //std::tuple_element 获取元素的类型
+        using type = typename std::tuple_element<I, std::tuple<Args...>>::type;
+    };
+};
+
+template<typename Ret, typename... Args>
+struct function_traits<Ret(*)(Args...)> : function_traits<Ret(Args...)> {
+};
+
+template<typename Ret, typename... Args>
+struct function_traits<std::function<Ret(Args...)>> : function_traits<Ret(Args...)> {
+};
+
+#define FUNCTION_TRAITS(...) \
+    template <typename ReturnType,typename ClassType,typename... Args> \
+    struct function_traits<ReturnType(ClassType::*)(Args...) __VA_ARGS__>:function_traits<ReturnType(Args...)>{}; \
+
+FUNCTION_TRAITS()
+FUNCTION_TRAITS(const)
+FUNCTION_TRAITS(volatile)
+FUNCTION_TRAITS(const volatile)
+
+//函数对象
+template<typename Callable>
+//decltype  类型说明符 作用时选择并返回操作数的数据类型.
+struct function_traits : function_traits<decltype(&Callable::operator())> {
+};
+
+// lambda表达式是一个匿名类，使用一个lambda表达式，实际就是使用一个匿名类的匿名对象，匿名类内部包含operator()调用符。
+// operator()的返回类型、形参列表以及 函数体与lambda表达式相对应，因此可像函数调用一样使用lambda表达式。
+//可通过function_traits获取lambda表达式的operator()类型，之后再将其转换为std::function
+
+template<typename Function>
+typename function_traits<Function>::std_function_type to_function(const Function &lambda) {
+    return static_cast<typename function_traits<Function>::std_function_type>(lambda);
+}
+
+template<typename Function>
+typename function_traits<Function>::std_function_type to_function(Function &&lamdba) {
+    return static_cast<typename function_traits<Function>::std_function_type>(std::forward<Function>(lamdba));
+}
+
+template<typename Function>
+typename function_traits<Function>::pointer to_function_pointer(const Function &lambda) {
+    return static_cast<typename function_traits<Function>::pointer>(lambda);
+}
+
+#endif //CPP_START_FUNCTION_TRAITS_H

src/bus/message_bus.h

@@ -0,0 +1,81 @@
+
+#ifndef CPP_START_MESSAGE_BUS_H
+#define CPP_START_MESSAGE_BUS_H
+
+#include <string>
+#include <functional>
+#include <map>
+#include "../base/any.h"
+#include "../base/function_traits.h"
+#include "../base/non_copy_able.h"
+
+using namespace std;
+
+class MessageBus : public NonCopyAble {
+public:
+    //注册消息
+    template<typename F>
+    void Attach(F &&f, const string &strTopic = "") {
+        auto func = to_function(std::forward<F>(f));
+        Add(strTopic, std::move(func));
+    }
+
+    //发送消息
+    template<typename R>
+    //无参数
+    void SendReq(const string &strTopic = "") {
+        //std::function  函数对象类，包装了满足该函数模板类型的任意函数对象，这些目标实体包括普通函数、Lambda表达式、函数指针、模函数、类成员函数、类静态函数以及其它的函数对象
+        using function_type = std::function<R()>;
+        string strMsgType = strTopic + string("##") + typeid(function_type).name();
+
+        std::pair<std::multimap<string, Any>::iterator, std::multimap<string, Any>::iterator> range = m_map.equal_range(
+                strMsgType);
+        for (Iterator it = range.first; it != range.second; ++it) {
+            auto f = it->second.AnyCast<function_type>();
+            f();
+        }
+    }
+
+    template<typename R, typename... Args>
+    //有参数
+    void SendReq(Args &&... args, const string &strTopic = "") {
+        using function_type = std::function<R(Args...)>;
+        string strMsgType = strTopic + string("##") + typeid(function_type).name();
+        cout << "send Msg: " << strMsgType << endl;
+        auto range = m_map.equal_range(strMsgType);
+        for (Iterator it = range.first; it != range.second; ++it) {
+            auto f = it->second.AnyCast<function_type>();
+            f(std::forward<Args>(args)...);
+        }
+    }
+
+    //移除某个主题，需要主题和消息类型
+    template<typename R, typename... Args>
+    void Remove(const string &strTopic = "") {
+        using function_type = std::function<R(Args...)>;
+        string strMsgType = strTopic + string("##") + typeid(function_type).name();
+        cout << "remove message: " << strMsgType << endl;
+        int count = m_map.count(strMsgType);
+        auto range = m_map.equal_range(strMsgType);
+        m_map.erase(range.first, range.second);
+    }
+
+private:
+    template<typename F>
+    void Add(const string &strTopic, F &&f) {
+        string strMsgType = strTopic + string("##") + typeid(F).name();//主题
+
+        //emplace  插入操作，相比inset，其能就地通过参数构造对象，不需要拷贝或者移动内存，使容器插入元素的性能得到进一步提升。
+        m_map.emplace(std::move(strMsgType), std::forward<F>(f));
+
+        cout << "register message: " << strMsgType << endl;
+    }
+
+private:
+
+    std::multimap<string, Any> m_map; //存储注册的消息
+    typedef std::multimap<string, Any>::iterator Iterator;
+
+};
+
+#endif //CPP_START_MESSAGE_BUS_H

src/ioc/container.h

@@ -0,0 +1,107 @@
+
+#ifndef CPP_START_CONTAINER_H
+#define CPP_START_CONTAINER_H
+
+#include <unordered_map>
+#include "../base/any.h"
+#include "../base/non_copy_able.h"
+
+#include <string>
+#include <unordered_map>
+#include <memory>
+#include <functional>
+
+using namespace std;
+
+class IocContainer : NonCopyAble {
+public:
+    IocContainer() {}
+
+    ~IocContainer() {}
+
+    // 注册需要创建对象的构造函数
+    template<class T, typename Depend, typename... Args>
+    void RegisterType(const string &strKey) {
+        // 注意，这里创建的是依赖的对象！不再是创建对象!
+        // 通过闭包擦除了Depend参数类型
+        std::function<T *(Args...)> function = [](Args... args) { return new T(new Depend(args...)); };
+        RegisterType(strKey, function);
+    }
+
+    // 根据唯一标识查找对应的构造函数，并创建指针对象
+    template<class T, typename... Args>
+    T *Resolve(const string &strKey, Args... args) {
+        if (m_creatorMap.find(strKey) == m_creatorMap.end()) {
+            return nullptr;
+        }
+
+        Any resolver = m_creatorMap[strKey];
+        // 将查找到的Any转换为function
+        std::function<T *(Args...)> function = resolver.AnyCast<std::function<T *(Args...)>>();
+
+        return function(args...);
+    }
+
+    // 创建智能指针对象
+    template<class T, typename... Args>
+    std::shared_ptr<T> ResolveShared(const string &strKey, Args... args) {
+        T *ptr = Resolve<T>(strKey, args...);
+        return std::shared_ptr<T>(ptr);
+    }
+    
+    void RegisterType(const string &strKey, Any constructor) {
+        if (m_creatorMap.find(strKey) != m_creatorMap.end()) {
+            throw std::invalid_argument("this key has already exist!");
+        }
+        // 通过Any擦除不同类型的构造器
+        m_creatorMap.emplace(strKey, constructor);
+    }
+
+private:
+    unordered_map<string, Any> m_creatorMap;
+};
+
+
+/*
+class Container : NonCopyAble {
+
+private:
+    std::unordered_map<std::string, Any> mCreatorMap;
+
+public:
+    Container() {};
+
+    ~Container() {};
+
+    template<typename T, typename Depend, typename... Args>
+    void registerType(const std::string &key) {
+        std::function<T *(Args...)> func = [](Args... args) {
+            return new T(new Depend(args...));
+        };
+        registerType(key, func);
+    }
+
+    template<typename T, typename... Args>
+    T *resolve(const std::string &key, Args ... args) {
+        if (mCreatorMap.find(key) == mCreatorMap.end()) {
+            return nullptr;
+        }
+        Any constructor = mCreatorMap[key];
+        std::function<T *(Args...)> function = constructor.cast<std::function<T *(Args...)>>();
+        return function(args...);
+    }
+
+private:
+    void registerType(const std::string &key, Any constructor) {
+        auto it = mCreatorMap.find(key);
+        auto end = mCreatorMap.end();
+        if (mCreatorMap.find(key) != mCreatorMap.end()) {
+            // TODO 多次添加
+            throw std::invalid_argument("this key has aleady exist!");
+        }
+        mCreatorMap.emplace(key, constructor);
+    }
+
+};
+*/
+#endif //CPP_START_CONTAINER_H

src/main.cpp

@@ -1,133 +1,6 @@
 #include <iostream>
-#include <map>
 #include <thread>
 
-template<typename T>
-class iterator {
-public:
-    using value_type = T;
-    using size_type = size_t;
-
-private:
-    size_type cursor_;
-    const value_type step_;
-    value_type value_;
-
-public:
-
-    iterator(size_type cur_satrt, value_type begin_val, value_type step_val)
-            :
-            cursor_(cur_satrt),
-            step_(step_val),
-            value_(begin_val) {
-
-    };
-
-    value_type operator*() const {
-        return value_;
-    };
-
-    bool operator!=(const iterator &rhs) const {
-        return (cursor_ != rhs.cursor_);
-    };
-
-    iterator *operator++() {
-        value_ += step_;
-        ++cursor_;
-        return (*this);
-    };
-};
-
-
-void foreach() {
-    std::map<std::string, int> mm = {
-            {"a", 1},
-            {"b", 2},
-            {"c", 3}
-    };
-
-    for (const auto &m: mm) {
-        std::cout << m.first << " -> " << m.second << std::endl;
-    }
-}
-
-int g_constructCount = 0;
-int g_copy_constructCount = 0;
-int g_destructCount = 0;
-
-class A {
-
-public:
-    A() {
-        std::cout << "construct: " << ++g_constructCount << std::endl;
-    }
-
-    A(const A &a) {
-        std::cout << "copy construct: " << ++g_copy_constructCount << std::endl;
-    }
-
-    ~A() {
-        std::cout << "destruct: " << ++g_destructCount << std::endl;
-    }
-
-};
-
-A getA() {
-    return A{};
-}
-
-
-template<typename T>
-struct GetLeftSize : std::integral_constant<int, 10> {
-
-};
-
-template<typename ... T>
-void f(T ... args) {
-    std::cout << sizeof...(args) << std::endl;
-}
-
-
-template<typename ... T>
-void expand(T ... args) {
-    std::initializer_list<int>{(std::cout << args << std::endl, 0)...};
-}
-
-template<typename F, typename Arg>
-auto Func(F f, Arg arg) -> decltype(f(arg)) {
-    return f(arg);
-}
-
-
-template<typename Fn, typename Arg>
-auto GroupBy(const std::vector<Arg> &vt, Fn &&keySelector)
--> std::multimap<decltype(keySelector((Arg & )
-
-nullptr)), Arg>
-{
-typedef decltype(keySelector(*(Arg * ) nullptr))
-key_type;
-std::multimap<key_type, Arg> map;
-std::for_each(vt
-.
-
-begin(), vt
-
-.
-
-end(),
-
-[&](
-const Arg &arg
-){
-map.
-insert(make_pair(keySelector(arg), arg)
-);
-});
-return
-map;
-}
-
 std::mutex g_lock;
 
 void func() {
@@ -135,7 +8,23 @@ void func() {
     std::this_thread::sleep_for(std::chrono::seconds(2));
 }
 
+void thread_test() {
+    auto start = std::chrono::duration_cast<std::chrono::milliseconds>(
+            std::chrono::system_clock::now().time_since_epoch()).count();
+    std::cout << "start time: " << start / 1000 << std::endl;
+    std::thread t0(func);
+    std::thread t1(func);
+    std::thread t2(func);
+    t0.join(); // 阻塞执行
+    t1.detach(); // 分离线程何对象，之后就无法何线程发送联系
+    t2.join();
+    auto end = std::chrono::duration_cast<std::chrono::milliseconds>(
+            std::chrono::system_clock::now().time_since_epoch()).count();
+    std::cout << "  end time: " << end / 1000 << std::endl;
+}
+
 #include "base/sync_queue.h"
+
 void sync_test() {
     // 同步队列
     auto queue = new SyncQueue<int>(3);
@@ -162,7 +51,6 @@ void sync_test(){
     consumer.join();
 }
 
-
 #include <chrono>
 #include <iomanip>
 #include "util/stop_watch.h"
@@ -198,7 +86,8 @@ void chrono_test(){
 }
 
 #include "base/thread_pool.h"
-void thread_test(){
+
+void threadpool_test() {
     ThreadPool pool(3, 10);
 
     std::thread t0([&pool] {
@@ -227,14 +116,14 @@ void thread_test(){
     t1.join();
 }
 
-
 #include "aspect/aspect.h"
 #include "test/time_elapsed_aspect.h"
 #include "test/log_aspect.h"
-void HT(int a)
+
-{
+void HT(int a) {
     std::cout << "real HT function " << a << std::endl;
 }
+
 void aop_test() {
     using namespace std;
 
@@ -252,41 +141,140 @@ void aop_test(){
     aop<LogAspect>(f, 100);
 }
 
+
+#include "base/any.h"
+
+void any_test() {
+    Any n;
+    auto r = n.IsNull();//true
+    string s1 = "hello";
+    n = s1;
+    n = "world";
+    n.AnyCast<int>(); //can not cast int to string
+    Any n1 = 1;
+    n1.Is<int>(); //true
+}
+
+#include "ioc/container.h"
+
+void ioc_test() {
+
+    struct Base {
+        virtual ~Base() = default;
+
+        virtual void Func() = 0;
+    };
+
+    struct DerivedB : public Base {
+        DerivedB(int a, double b) : m_a(a), m_b(b) {
+        }
+
+        ~DerivedB() override = default;
+
+        void Func() override {
+            cout << "DerivedB run :" << m_a + m_b << endl;
+        }
+
+    private:
+        int m_a;
+        double m_b;
+    };
+
+    struct DerivedC : public Base {
+        ~DerivedC() override = default;
+
+        void Func() override {
+            std::cout << "DerivedC " << std::endl;
+        };
+    };
+
+    struct A {
+        A(Base *ptr) : m_ptr(ptr) {
+        }
+
+        ~A() {
+            if (m_ptr != nullptr) {
+                delete m_ptr;
+                m_ptr = nullptr;
+            }
+        }
+
+        void Func() {
+            m_ptr->Func();
+        }
+
+    private:
+        Base *m_ptr;
+    };
+
+    IocContainer ioc;
+
+    // TODO 可通过CRTP奇怪的重复模板模式进行自动注册
+
+    // 注册依赖关系
+    ioc.RegisterType<A, DerivedC>("C");
+    ioc.RegisterType<A, DerivedB, int, double>("B");
+
+    // 通过容器进行初始化
+    auto pc = ioc.ResolveShared<A>("C");
+    // 注意DerivedB的参数int,double
+    auto pb = ioc.ResolveShared<A>("B", 1, 2.0);
+
+    pc->Func();
+    pb->Func();
+}
+
+#include "bus/message_bus.h"
+
+void message_test() {
+    MessageBus bus;
+    //注册消息
+    bus.Attach([](int a) { cout << "no reference: " << a << endl; });
+    bus.Attach([](int &a) { cout << "lvalue reference: " << a << endl; });
+    bus.Attach([](int &&a) { cout << "rvalue reference: " << a << endl; });
+    bus.Attach([](const int &a) { cout << "const lvalue reference: " << a << endl; });
+    bus.Attach([](int a) {
+        cout << "no reference has return value and key: " << a << endl;
+        return a;
+    }, "a");
+
+    int i = 2;
+    bus.SendReq<void, int>(2);
+    bus.SendReq<int, int>(2, "a");
+    bus.SendReq<void, int &>(i);
+    bus.SendReq<void, const int &>(2);
+    bus.SendReq<void, int &&>(2);
+
+    bus.Remove<void, int>();
+    bus.Remove<int, int>("a");
+    bus.Remove<void, int &>();
+    bus.Remove<void, const int &>();
+    bus.Remove<void, int &&>();
+
+    bus.SendReq<void, int>(2);
+    bus.SendReq<int, int>(2, "a");
+    bus.SendReq<void, int &>(i);
+    bus.SendReq<void, const int &>(2);
+    bus.SendReq<void, int &&>(2);
+
+}
+
 int main() {
+//     线程测试
+    thread_test();
 //     同步队列测试
-//    sync_test();
+    sync_test();
 //     时间工具测试
-//    chrono_test();
+    chrono_test();
 //     线程池测试
-//    thread_test();
+    threadpool_test();
 //     AOP测试
     aop_test();
-
+//     Any测试
-
+    any_test();
-//    auto start = std::chrono::duration_cast<std::chrono::milliseconds>(
+//     IoC测试
-//            std::chrono::system_clock::now().time_since_epoch()).count();
+    ioc_test();
-//    std::cout << "start time: " << start / 1000 << std::endl;
+//     总线测试
-//    std::thread t0(func);
+    message_test();
-//    std::thread t1(func);
-//    std::thread t2(func);
-//    t0.join(); // 阻塞执行
-//    t1.detach(); // 分离线程何对象，之后就无法何线程发送联系
-//    t2.join();
-//    auto end = std::chrono::duration_cast<std::chrono::milliseconds>(
-//            std::chrono::system_clock::now().time_since_epoch()).count();
-//    std::cout << "  end time: " << end / 1000 << std::endl;
-
-//    A&& a = getA();
-//
-//    expand(1,2,3,4);
-//
-//    std::cout << GetLeftSize<int>::value << std::endl;
-//
-//    f();
-//    f(1);
-//    f(1,2.5,"");
-//
-//    foreach();
-
     return 0;
 }