Question

For example suppose I have

class Parent {

    def method() {
        var myvar = "test"
    }

} 

Is there any mechanism for accessing myvar in child classes?

Edit:

I’m trying to build a DSL modeled upon an existing language. That language has features such as

onTrade {
    if (price == ...) // will compile
}

onDayStart {
    if (price == ...) // will not compile
}

It is as if price is a global variable but there are compile time checks to make sure it is only used in the correct context. I was thinking one way to simulate this would be to have local variables that could be overridden in subclasses. Something like

// Parent
onTrade {
    var price = ...
}

// Child
onTrade {
    if (price == ...)
    if (somethingelse == ...) // will not compile
}

Answer 1

Possible solution for your problem (though I don’t see a way to get rid of new):

// parent
var onTrades = List[OnTrade]()
class OnTrade {
  var price = ...
  ...
  onTrades = this :: onTrades
}

// child
new OnTrade {
  if (price == ...) {...} // subclass constructor, will call OnTrade constructor first
}