XL语言编译器 XL语言的词汇: EOI : 输入结束 SEMI: 匹配单个字符 PLUS: 匹配单个字符 + TIMES: 匹配单个字符 * LP: 匹配单个字符 ( RP: 匹配单个字符 ) NUM_OR_ID: 匹配十进制整数或标识符-XL Compiler XL language vocabulary: EOI: input end of the SEMI: matches a single character ' &#