PARA_ERROR(RBTREE_EMPTY, "rbtree is empty"), \
PARA_ERROR(BAD_ROW, "invalid row"), \
PARA_ERROR(OSL_GETCWD, "can not get current working directory"), \
PARA_ERROR(RBTREE_EMPTY, "rbtree is empty"), \
PARA_ERROR(BAD_ROW, "invalid row"), \
PARA_ERROR(OSL_GETCWD, "can not get current working directory"), \