Minecraft's arguments are for commands are pretty basic, I'd support some version of named arguments at least, like in the form of GNU's getopt:

command arg1 arg2 --longopt=5 -s

The natural representation of that would be a hash map. Arguments could be handled by an argument parser that verifies the supplied arguments, and parses them once and not on every access. Other games could potentially use other formats, so they could supply their own version of an argument parser.

I’ve implemented the first pass of arguments parsing.
Now, all that’s left is a GNU-like arguments parser and have commands supply the parser they want.

Wow that's one complex approach.

I have a simpler one, store arguments by their respective types and parse them in one pass. Imagine something like this:

void callback(ArgParser p) {
    p = p.args(int.class, float.class, String.class).opt(int.class, "example", "e"); // And so on
    int arg1 = p.get(0);
    // ...
    int example = p.getOrElse("example", 5);
}

ArgsParser would be immutable so that you can have multiple sets of arguments for a command.

I haven't quite thought this out yet completely but it's roughly inspired by python's implementation of gnu style options. It spares you the need for creating countless of wrapper types.

Has my thumbs up

@Victorious3 can you do a proper github review next time?

Fancy new feature I won't try to explore with my phone, sorry :P

@Victorious3 it works fine on the phone, just as you expect...

@RX14 I'm not expecting much considering that I cant even edit my comments without requesting the desktop version.

@Victorious3 well it does work so ok

@Victorious3 do you want to review this?