ast *createBlock (symbol *, ast *);
ast *createLabel (symbol *, ast *);
ast *createCase (ast *, ast *, ast *);
-ast *createDefault (ast *, ast *);
+ast *createDefault (ast *, ast *, ast *);
ast *forLoopOptForm (ast *);
ast *argAst (ast *);
ast *resolveSymbols (ast *);