scanner.l

来自「一个开源的JAVA虚拟机」· L 代码 · 共 31 行

%{
#include <string.h>
#include <jpr/type.h>
#include "parser.tab.h"
%}

%%

[[:digit:]]+   { yylval.index = atoi(yytext); return TOK_INDEX; }

\"[^\"]*\"     { size_t len = strlen(yytext)-2; char *buf = malloc(len); strncpy(buf, yytext+1, len); buf[len] = '\0'; yylval.utf8 = buf; return TOK_UTF8; }

constant       return TOK_CONSTANT;

class          return TOK_CLASS;

field          return TOK_FIELD;

method         return TOK_METHOD;

attribute      return TOK_ATTRIBUTE;

\[             return TOK_LBRACKET;

\]             return TOK_RBRACKET;

[ \t\n]*       /* ignore space */        

%%