class TKwwhile
special Token
end
+class TKwloop
+special Token
+end
class TKwfor
special Token
end
readable writable var _n_block: nullable AExpr = null
readable writable var _n_label: nullable ALabel = null
end
+class ALoopExpr
+special AExpr
+ readable writable var _n_kwloop: TKwloop
+ readable writable var _n_block: nullable AExpr = null
+ readable writable var _n_label: nullable ALabel = null
+end
class AForExpr
special AExpr
readable writable var _n_kwfor: TKwfor