foogram.txt

来自「用于词法分析的词法分析器」· 文本 代码 · 共 10 行

FOO format file grammar

<foo> ::= <object>
<object> ::= <atomic> | <composite>
<composite> ::= '(' <attribute>* ')'
<attribute> ::= <ident> <attr_values>
<attr_values> ::= <object> | '[' <object>* ']'
<atomic> ::= string
<ident> ::= [a-zA-Z0-9_]+
<string> ::= "..."