simplesyntax.syntax

来自「java 词法分析器,用于一般的C,C++,VB,PS/SQL 语句的翻译」· SYNTAX 代码 · 共 27 行

#######################
// Simple sample syntax that uses no
// quantifiers, parenthesis and lexer symbols (".." or "-").
/*###################*/

grammar ::=	grammar rule
		| rule
		;
		
rule ::= `identifier` "::=" sentences ';'
		;

sentences ::= sentences '|' symbols
		| symbols
		;

symbols ::= symbols symbol
		| 	/* nothing */
		;

symbol ::= `identifier`
		| `chardef`
		| `stringdef`
		| `ruleref`
		;