#include <stdio.h>
#include "demo_def.h"
#include "demo.h"
Scanner scanner_globals;
#define YYCTYPE char
#define YYFILL(n)
#define STATE(name) yyc##name
#define BEGIN(state) YYSETCONDITION(STATE(state))
#define LANG_SCNG(v) (scanner_globals.v)
#define SCNG LANG_SCNG
#define YYGETCONDITION() SCNG(yy_state)
#define YYSETCONDITION(s) SCNG(yy_state) = s
#define YYCURSOR SCNG(yy_cursor)
#define YYLIMIT SCNG(yy_limit)
#define YYMARKER SCNG(yy_marker)
int scan(){
/*!re2c
<INITIAL>"<?php" {BEGIN(ST_IN_SCRIPTING); return T_BEGIN;}
<ST_IN_SCRIPTING>[0-9]+ {return T_NUMBER;}
<ST_IN_SCRIPTING>[ \n\t\r]+ {return T_WHITESPACE;}
<ST_IN_SCRIPTING>"exit" { return T_EXIT; } <ST_IN_SCRIPTING>[a-z]+ {return T_LOWER_CHAR;}
<ST_IN_SCRIPTING>[A-Z]+ {return T_UPPER_CHAR;}
<ST_IN_SCRIPTING>"?>" {return T_END;}
<ST_IN_SCRIPTING>[^] {return T_UNKNOWN;}
<*>[^] {return T_INPUT_ERROR;}
*/
}
void print_token(int token) {
switch (token) {
case T_BEGIN: printf("%s\n", "begin");break;
case T_NUMBER: printf("%s\n", "number");break;
case T_LOWER_CHAR: printf("%s\n", "lower char");break;
case T_UPPER_CHAR: printf("%s\n", "upper char");break;
case T_EXIT: printf("%s\n", "exit");break;
case T_UNKNOWN: printf("%s\n", "unknown");break;
case T_INPUT_ERROR: printf("%s\n", "input error");break;
case T_END: printf("%s\n", "end");break;
}
}
int main(int argc, char* argv[])
{
int token;
BEGIN(INITIAL); // 全局初始化，需要放在scan调用之前
scanner_globals.yy_cursor = argv[1]; //将输入的第一个参数作为要解析的字符串
while(token = scan()) {
if (token == T_INPUT_ERROR) {
printf("%s\n", "input error");
break;
}
if (token == T_END) {
printf("%s\n", "end");
break;
}
print_token(token);
}
return 0;
}