Create an easily read/written form for scriptdata

[kythyria]

There's a few options. A good one is YAML-oid or indeed YAML itself, conditional on finding a parser that shows us references instead of billion-laughs-ing.

Another option is Lua, which requires considerably more effort to make it actually Lua instead of, as it were, LSON. For instance:

return SequenceManager {
  variables = id(0, {
    { name="foo", value="0" }
  }),
  ref(0)
}

Unfortunately parsing this by using loadstring with a custom environment sometimes requires a second pass over the result: any time a ref precedes the corresponding id in the evaluation order.

Another option is to extend QML with a ripoff of YAML reference syntax. Can't loadstring it, but:

SequenceManager {
  variables: &0 Variables {
    { name: "foo", value: "0" }
  }
  *0
}

Either way this shares with the XML forms a use for an intermediate representation in which label and ref are concepts, so that the code to lower to and raise from those can be shared.