exprType type = arity >= 1 ? ((exprType) stack.popNode()) : null;
return new Raise(type, null, null, from);
case JJTGLOBAL_STMT:
return new Global(makeIdentifiers(NameTok.GlobalName), null);
case JJTNONLOCAL_STMT:
return new NonLocal(makeIdentifiers(NameTok.NonLocalName), null);
case JJTASSERT_STMT:
exprType msg = arity == 2 ? ((exprType) stack.popNode()) : null;
test = (exprType) stack.popNode();
return new Assert(test, msg);
case JJTBEGIN_TRY_STMT: