FR: Possible Integration of magic_enum

[stellarpower]

• Compiler Used: clang-15
• Operating System: Ubuntu 22.04
• Architecture (ARM/x86/32bit/64bit/etc): AMD64

This is a snippet to add enums automagically:

template<typename Enumeration> void addEnum(ModulePtr m){

   
    constexpr string_view    TypeName = magic_enum::enum_type_name<Enumeration>();
    constexpr size_t       EntryCount = magic_enum::enum_count    <Enumeration>();

    constexpr array<  pair<Enumeration, string_view>, EntryCount  > Entries = magic_enum::enum_entries<Enumeration>();
    
    vector<pair<Enumeration, string>> runtimeEntries;
    runtimeEntries.reserve(EntryCount);

    for (const auto &[value, name] : Entries)
        runtimeEntries.push_back( pair<Enumeration, string>(value, name) );

    utility::add_class<Enumeration>(
        *m,
        string(TypeName),
        runtimeEntries
    );
    
}

Am dropping here as hope it is of some use to someone.

Ideally the utility from !233 could be patched to be more generified not to need specifically a vector of values and strings, but instead, an iterable range of values and string-like objects. This would allow passing in the output from magic_enum::enum_entries<Enumeration>() directly. As it stands we could also probably use ranges rather than the explicit for loop.

Should not take too long to implement, but don;t have a time to open a branch today.

Also not sure if we should get conversion to the underlying integer for free. Am not seeing it right now but maybe I am overlooking something.

It looks like the develop branch is now requiring C++17 support, in which case it's be possible to integrate magic_enum into Chaiscript to automate this. Although C++23 should be bringing some sort of reflection capabilities, so would understand a motivation to hold off and see what comes of that, as without needing nearly as much boilerplate this would make Chaiscript really awesome!