我正在将以下语法从 BNF 转换为 EBNF。
<race> => go <dir_list> and stop
<dir_list> => <dir>
| <dir> then <dir_list>
<dir> => from <point> to <point>
| around <point>
| to <point>
<point> => A
| B
| C
我做了我的研究,我想出了
<race> => go <dir_list> and stop
<dir_list> => <dir> { (then) <dir> }
<dir> => (from | around | to ) { <point> to <point> }
<point> => (A|B|C)
这是正确的,没有人可以为我提供解决方案吗?