lexsymb.h

一个自定义简单脚本引擎的实现代码

typedef union {
   char    *str;     // a character string
   SymDesc *symbol;  // entry from symbol table
   TreeNode *tnode;  // node in the syntax tree
} YYSTYPE;
#define	ERROR_TOKEN	258
#define	IF	259
#define	ELSE	260
#define	PRINT	261
#define	INPUT	262
#define	ASSIGN	263
#define	EQUAL	264
#define	CONCAT	265
#define	END_STMT	266
#define	OPEN_PAR	267
#define	CLOSE_PAR	268
#define	BEGIN_CS	269
#define	END_CS	270
#define	ID	271
#define	STRING	272


extern YYSTYPE yylval;