def p_persistent_stmt(p): """ persistent_stmt : PERSISTENT global_list SEMI | PERSISTENT ident EQ expr SEMI """ p[0] = node.null_stmt()
def p_null_stmt(p): """ null_stmt : SEMI | COMMA """ p[0] = node.null_stmt()
def p_error_stmt(p): """ error_stmt : ERROR_STMT SEMI """ p[0] = node.null_stmt()