从组件的std::type_index获取派生最多的类型

class Component {
public:
    virtual ~Component() {}
};

class Derived1 : public Component {};
class Derived2 : public Component {};
class Derived3 : public Component {};
// 更多的派生类...

#include <typeindex>
#include <unordered_map>

std::type_index getMostDerivedType(const Component& component) {
    std::unordered_map<std::type_index, int> derivedCounts;

    // 遍历组件中的类型
    // 假设组件中的类型通过一个成员函数获取
    for (const auto& derived : component.getTypes()) {
        // 统计每个类型的派生类数量
        derivedCounts[std::type_index(typeid(derived))]++;
    }

    // 找到派生类数量最多的类型
    std::type_index mostDerivedType;
    int maxCount = 0;
    for (const auto& pair : derivedCounts) {
        if (pair.second > maxCount) {
            maxCount = pair.second;
            mostDerivedType = pair.first;
        }
    }

    return mostDerivedType;
}

int main() {
    Component component;

    // 获取派生类最多的类型
    std::type_index mostDerivedType = getMostDerivedType(component);

    // 输出结果
    std::cout << "派生类最多的类型是: " << mostDerivedType.name() << std::endl;

    return 0;
}