// Funny shortcuts for nicer code. If you have a function that
// does not require arguments but want to make it look like
// it was a regular property you have those choices:
 
use(fn) {
  for fn in arguments {
    wfn = lookup("oui-" + fn);
    if wfn is a "function" {
      wfn();
    } else if fn is a "function" {
      fn();
    } else {
      s('/* Error: Unknown mixin with name "%s" or "oui-%s" */', fn, fn);
      error("Unknown mixin: " + fn);
    }
  }
}

// Not sure yet which one will make the race
 
// A special opinionated measurement in twindy CSS is a `rex`
// We assume that `1rem == 16px`, so `1rex == 0.0625rem`
// The advantage is that the sizes nicely scale to different
// default font sizes defined in `html`
oui-size-factor ?= (1 / 16)rem;

rex(value) {
  if value is a "unit" && unit(value) == "" && (value != 0) {
    value * oui-size-factor;
  } else {
    value;
  }
}

px = rex;

// Can take any arguments and if it encounters pure numbers it
// will convert them to rex values
rexArgs(args) {
  list = ();

  for arg in args {
    if arg is a "unit" {
      push(list, rex(arg));
    } else {
      push(list, arg);
    }
  }

  list;
}
 
// Helper to only add a global mixin once
__oui_once(name) {
  check = "__oui_once__" + name;

  if lookup(check) != check {
    define(check, check, true);
    true;
  } else {
    false;
  }
}