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javahaxe

Haxe use of @:classCode

I can't find a single example of how @:classCode is used (to inject a native member directly into the file). This fails with Unexpected untyped at compile time:

@:classCode
untyped __java__("public void paintComponent(Graphics g) {doStuff();}");

I can't simply use standard Haxe code to have a paintComponent() method because of the way Haxe eats @:overload methods (and forces use of @:overload in the first place).

Solution

  • There are some examples of it in the Haxe standard library, for instance:

    @:classCode('override public string Message { get { return this.toString(); } }\n\n')
@:nativeGen @:keep @:native("haxe.lang.HaxeException")
private class HaxeException extends Exception

    Looks like the class code metadata has a string argument containing the code to be inserted and should be used on a class declaration.