- 选择语言,用 racket Perl in same time
- the syntax of grammar use BNF
- parser of BNF use what
BNF and Regexp use Lisp to descripe.
(regexp \d+ :id) (grammar :id (regexp ) ) use racket descripe grammar
BNF and Regexp use Lisp to descripe.
(regexp \d+ :id) (grammar :id (regexp ) ) use racket descripe grammar
转载于:https://my.oschina.net/u/563463/blog/215570