//Scanner.h

#pragma once
#include "Grammar.h"
using namespace std;
//這里定義了詞法分析

class Scanner
{
public:
	Scanner(Grammar *grammer);
	~Scanner() {};
	void scan();
	void printoken();
	list<TOKEN> tokenlist;
protected:
	FILE *fp;  //文件指針，用于指向要分析的源程序
	char cbuffer; //現(xiàn)在讀入的字符
	int linenum; //分析到的行數(shù)
	int search(char searchchar[],int wordtype); //查找
	char alphaprocess(char buffer);  //關(guān)鍵字和標(biāo)識(shí)符處理子函數(shù)
	char digitprocess(char buffer);   //數(shù)字處理函數(shù)
	char otherprocess(char buffer);    //其他字符處理函數(shù)

	Grammar * g; //文法提供終極符.
};