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Example of implement multi trigger in class

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marcelb 2024-11-24 20:26:13 +01:00
parent 5b0e363cd5
commit eb8cdee237
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49
README.md
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@ -329,6 +329,55 @@ myclass.on("constructed", [] (int i) {
```
Implementing a class with multiple triggers of different types
```c++
class ClassWithTriggers {
trigger<int> emitter1;
trigger<string> emitter2;
public:
template<typename... T>
void on(const string& key, function<void(T...)> callback) {
if constexpr (sizeof...(T) == 1 && is_same_v<tuple_element_t<0, tuple<T...>>, int>) {
emitter1.on(key, callback);
}
else if constexpr (sizeof...(T) == 1 && is_same_v<tuple_element_t<0, tuple<T...>>, string>) {
emitter2.on(key, callback);
}
}
template <typename... Args>
void tick(const string& key, Args&&... args) {
if constexpr (sizeof...(Args) == 1 && is_same_v<tuple_element_t<0, tuple<Args...>>, int>) {
emitter1.tick(key, forward<Args>(args)...);
}
else if constexpr (sizeof...(Args) == 1 && is_same_v<tuple_element_t<0, tuple<Args...>>, string>) {
emitter2.tick(key, forward<Args>(args)...);
}
else {
static_assert(sizeof...(Args) == 0, "Unsupported number or types of arguments");
}
}
};
ClassWithTriggers mt;
mt.on<int>("int", function<void(int)>([&](int i) {
cout << "Emit int " << i << endl;
}));
mt.on<string>("string", function<void(string)>([&](string s) {
cout << "Emit string " << s << endl;
}));
mt.tick("int", 5);
mt.tick("string", string("Hello world"));
```
Asynchronous file IO
```c++

49
test/test.cpp
View File

@ -62,6 +62,37 @@ class myOwnClass : public trigger<int> {
myOwnClass() : trigger() {};
};
// ----------------- MULTIPLE TRIGGERS IN ONE CLASS ------------------
class ClassWithTriggers {
trigger<int> emitter1;
trigger<string> emitter2;
public:
template<typename... T>
void on(const string& key, function<void(T...)> callback) {
if constexpr (sizeof...(T) == 1 && is_same_v<tuple_element_t<0, tuple<T...>>, int>) {
emitter1.on(key, callback);
}
else if constexpr (sizeof...(T) == 1 && is_same_v<tuple_element_t<0, tuple<T...>>, string>) {
emitter2.on(key, callback);
}
}
template <typename... Args>
void tick(const string& key, Args&&... args) {
if constexpr (sizeof...(Args) == 1 && is_same_v<tuple_element_t<0, tuple<Args...>>, int>) {
emitter1.tick(key, forward<Args>(args)...);
}
else if constexpr (sizeof...(Args) == 1 && is_same_v<tuple_element_t<0, tuple<Args...>>, string>) {
emitter2.tick(key, forward<Args>(args)...);
}
else {
static_assert(sizeof...(Args) == 0, "Unsupported number or types of arguments");
}
}
};
int main () {
@ -367,6 +398,24 @@ int main () {
// cout << "Constructed " << i << endl;
// });
// /**
// *
// * Use class with multiple triggers
// *
// */
ClassWithTriggers mt;
mt.on<int>("int", function<void(int)>([&](int i) {
cout << "Emit int " << i << endl;
}));
mt.on<string>("string", function<void(string)>([&](string s) {
cout << "Emit string " << s << endl;
}));
mt.tick("int", 5);
mt.tick("string", string("Hello world"));
// auto status = fs::read("test1.txt");