Converting a vector of strings into an enum class with variables with the same name as strings-CodePudding

I would like to convert a vector of strings, e.g.

std::vector<std::string> fruit = {"Apple", "Banana", "Orange"};

into an enum class, as follows:

enum class fruitID : uint32_t {
 Apple = 0;
 Banana = 1;
 Orange = 2;

 _size
};

I'd appreciate any pointers to solve this, as I couldn't really find a good way of doing this looking through different answers. Thanks!

CodePudding user response：

As pointed out by the comments already there is no way to do this in C natively. You would have to generate source files dynamically in order to solve your problem.

The closest you can probably get is using a map as proxy. You can dynamically create it from your vector of strings and it is easy to use within the code, however, no compile-time checking for any range of valid values.

std::vector<std::string> fruit = {"Apple", "Banana", "Orange"};

int i = 0;
std::map<std::string, int> fruitID;
for (const auto& f : fruit)
{
    fruitID[f] = i  ;
}

Then use fruitID["Apple"] etc. to use your "dynamic enum" in the code.