diff --git a/lexical_analysis.cpp b/lexical_analysis.cpp
deleted file mode 100644
index b92a3a8..0000000
--- a/lexical_analysis.cpp
+++ /dev/null
@@ -1,291 +0,0 @@
-#include <iostream>
-#include <fstream>
-#include <cstring>
-
-#define IDENTIFIER  -1 //自定义标识符 
-#define OPERATOR    -2 //界符 or 运算符 
-#define NUMBER      -3 //数字 
-#define RESERVEWORD -4 //关键字 
-#define STRING      -5 //字符串类型 
-#define FAIL        -6 //失败 
-#define SCANEND     -7 //扫描完成 
-#define ERRORFOUND  -8 //异常错误 
-
-// \n 换行 
-// \t tab
-// \r 回车 
-// \\ 反斜线 
-// \' 单引号 
-// \" 双引号 
-std::string ReserveWord[26]=
-{
-	"for","foreach","forindex","while",
-	"var","func","break","continue","return",
-	"if","else","elsif","nil","and","or",
-	"print","cmp","append","setsize","subvec","pop",
-	"sort","contains","delete","keys","typeof"
-};
-
-std::string OperatorOrDelimiter[40]=
-{
-	"+","-","*","/","=","+=","-=","*=","/=",
-	"\n","\t","\r","\\","\'","\"",".",
-	"<","<=",">",">=","==","!=","~=","!","~",
-	",",";","(",")","[","]","{","}","#","?",":",
-	"&","|","%","^"
-};
-
-std::string IdentifierTable[1000]={""};
-char ResourcePrograme[16777216];
-
-int isReserveWord(std::string &p)
-{
-	for(int i=0;i<26;++i)
-		if(ReserveWord[i]==p)
-			return i+1;
-	return FAIL;
-}
-
-int isOperatorOrDelimiter(std::string &p)
-{
-	for(int i=0;i<40;++i)
-		if(OperatorOrDelimiter[i]==p)
-			return i+1;
-	return FAIL;
-}
-
-bool isLetter(char t)
-{
-	return (('a'<=t) && (t<='z') || ('A'<=t) && (t<='Z'));
-}
-
-bool isNumber(char t)
-{
-	return (('0'<=t) && (t<='9'));
-}
-
-void InputFile(std::string &FileName)
-{
-	std::ifstream fin(FileName);
-	if(fin.fail())
-	{
-		std::cout<<"[Error] Failed to load file: "<<FileName<<std::endl;
-		ResourcePrograme[0]='@';
-		fin.close();
-		return;
-	}
-	int i=0;
-	bool FindNote=false;
-	while(!fin.eof())
-	{
-		ResourcePrograme[i]=fin.get();
-		if(ResourcePrograme[i]=='\n')
-			FindNote=false;
-		if(ResourcePrograme[i]!='#' && !FindNote)
-			++i;
-		else if(ResourcePrograme[i]=='#')
-		{
-			FindNote=true;
-		}
-		if(fin.eof())
-			break;
-	}
-	ResourcePrograme[i]='@';
-	++i;
-	for(int j=0;j<i;++j)
-		std::cout<<ResourcePrograme[j];
-	std::cout<<std::endl;
-	fin.close();
-	return;
-}
-
-void Scanner(int &Syn,const char Source[],std::string &token,int &ptr)
-{
-	char temp;
-	temp=Source[ptr];
-	while(temp==' ' || temp=='\n' || temp=='\t' || temp=='\r' || temp<0 || temp>127)
-	{
-		++ptr;
-		temp=Source[ptr];
-	}
-	
-	token="";
-	if(isLetter(temp) || temp=='_')
-	{
-		token+=temp;
-		++ptr;
-		temp=Source[ptr];
-		while(isLetter(temp) || isNumber(temp) || temp=='_')
-		{
-			token+=temp;
-			++ptr;
-			temp=Source[ptr];
-		}
-		Syn=isReserveWord(token);
-		if(Syn==FAIL)
-			Syn=IDENTIFIER;
-		else
-			Syn=RESERVEWORD;
-	}
-	else if(isNumber(temp))
-	{
-		int PointCnt=0;
-		while(isNumber(temp))
-		{
-			token+=temp;
-			++ptr;
-			temp=Source[ptr];
-			if(temp=='.' && !PointCnt)
-			{
-				++PointCnt;
-				token+=temp;
-				++ptr;
-				temp=Source[ptr];
-			}
-		}
-		Syn=NUMBER;
-	}
-	else if(temp=='(' || temp==')' || temp=='[' || temp==']' || temp=='{' ||
-			temp=='}' || temp==',' || temp==';' || temp=='|' || temp==':' ||
-			temp=='?' || temp=='.' || temp=='`' || temp=='\'' || temp=='&'||
-			temp=='%' || temp=='$' || temp=='^')
-	{
-		token+=temp;
-		++ptr;
-		Syn=OPERATOR;
-	}
-	else if(temp=='=' || temp=='+' || temp=='-' || temp=='*' || temp=='!' || temp=='/' || temp=='<' || temp=='>' || temp=='~')
-	{
-		Syn=OPERATOR;
-		token+=temp;
-		++ptr;
-		temp=Source[ptr];
-		if(temp=='=')
-		{
-			token+=temp;
-			++ptr;
-		}
-	}
-	else if(temp=='\\')
-	{
-		Syn=OPERATOR;
-		token+=temp;
-		++ptr;
-		temp=Source[ptr];
-		if(temp=='=' || temp=='n' || temp=='t' || temp=='r' || temp=='\\' || temp=='\'' || temp=='\"')
-		{
-			token+=temp;
-			++ptr;
-		}
-	}
-	else if(temp=='\"')
-	{
-		Syn=STRING;
-		token+=temp;
-		++ptr;
-		temp=Source[ptr];
-		while(temp!='\"')
-		{
-			if(temp=='\\')
-			{
-				token+=temp;
-				
-				++ptr;
-				temp=Source[ptr];
-				token+=temp;
-				
-				++ptr;
-				temp=Source[ptr];
-			}
-			else
-			{
-				token+=temp;
-				++ptr;
-				temp=Source[ptr];
-			}
-			if(temp=='@' || temp=='\n')
-				break;
-		}
-		//add the last char \"
-		if(temp=='\"')
-		{
-			token+=temp;
-			++ptr;
-		}
-		else
-			token+=" __missing_end_of_string";
-	}
-	else if(temp=='@')
-	{
-		Syn=SCANEND;
-		return;
-	}
-	else
-	{
-		Syn=FAIL;
-		std::cout<<"[Error] Unexpected error occurred: "<<temp<<std::endl;
-		system("pause");
-		++ptr;
-		return;
-	}
-	if(token=="")
-	{
-		Syn=ERRORFOUND;
-		std::cout<<"[Error] Cannot identify "<<std::endl;
-	}
-	return;
-}
-
-void help()
-{
-	std::cout<<">> exit: exit the programe."<<std::endl;
-	std::cout<<">> clear: clean the screen."<<std::endl;
-	std::cout<<">> help: find help."<<std::endl;
-	std::cout<<">> input the file name to scan."<<std::endl;
-}
-
-int main()
-{
-	help();
-	while(1)
-	{
-		int Syn=0;//token type
-		int Ptr=0;//pointer to one char in ResourcePrograme
-		std::string token;
-		std::string FileNameOrCommand;
-		std::cout<<">> ";
-		std::cin>>FileNameOrCommand;
-		
-		if(FileNameOrCommand=="exit")
-			break;
-		else if(FileNameOrCommand=="clear")
-		{
-			system("cls");
-			continue;
-		}
-		else if(FileNameOrCommand=="help")
-		{
-			help();
-			continue;
-		}
-		//std::ofstream fout("Data.txt");
-		InputFile(FileNameOrCommand);
-		while(Syn!=SCANEND && Syn!=ERRORFOUND)
-		{
-			Scanner(Syn,ResourcePrograme,token,Ptr);
-			if(Syn==OPERATOR)
-				std::cout<<"( Operator    | "<<token<<" )"<<std::endl;
-			else if(Syn==IDENTIFIER)
-				std::cout<<"( Identifier  | "<<token<<" )"<<std::endl;
-			else if(Syn==NUMBER)
-				std::cout<<"( Number      | "<<token<<" )"<<std::endl;
-			else if(Syn==RESERVEWORD)
-				std::cout<<"( ReserveWord | "<<token<<" )"<<std::endl;
-			else if(Syn==STRING)
-				std::cout<<"( String      | "<<token<<" )"<<std::endl;
-		}
-		std::cout<<">> Complete scanning \""<<FileNameOrCommand<<"\"."<<std::endl;
-		//fout.close();
-	}
-	return 0;
-}