#define MYCOMPILER

#define MAXWORD		10				//token和keyword最大長度
#define MAXLENGTH	30
#define MAXC		50				//符號(hào)表的最大容量
#define MAXOP		500				//最大的操作指令條數(shù)
#define MAXLEV		10				//最大的層數(shù)
#define MAXF		10				//最多的實(shí)常量數(shù)
#define MAXCASE		50				
#define MAXGO		100				//最大運(yùn)行棧
#define MAXGOLEV	10				//運(yùn)行棧最大的調(diào)用層
#define	MAXS		5				//printf語句中最多的轉(zhuǎn)換字符數(shù)
#define MAXERROR	50	
#define kk			12				//關(guān)鍵詞個(gè)數(shù)

char Word[MAXWORD];					//store token
int num;							//store 整數(shù)
char sisstring[MAXLENGTH];			//store 字符串
int sym;							//store 標(biāo)號(hào)；
char cischar;						//store 字符

char *Keyword[]={					//關(guān)鍵字
	"const","int","char","void",
	"main","if","else", "do","while",
	"scanf","printf", "return"
};

char *oprate[]={					//操作碼
	"LDA","LDI","JME","JMC","JMP","CAS",
	"RED","EXF","WRR","INF","ADD","SUB","",
	"MUL","DIV","MUS",">","<","==","!=",">=",
	"<=","STO","CAL","MKF","EXP"
};

FILE* FIN, *FOUT;					//輸入輸出文件指針
char fp[20];						//輸入文件名


union Cha{
	int num;
	char cischar;
};

struct Character{					//符號(hào)表
	char *name ;
	int type,lev,adr,kind;
	Cha uchar;
};

struct opr{							//中間代碼
	int op,lev,x;
};

	
char* err_msg[] =					//定義出錯(cuò)提示信息
{
/*0*/ "",
/*1*/ "標(biāo)識(shí)符或數(shù)字過長",
/*2*/ "非法單詞",
/*3*/ "缺少符號(hào)",
/*4*/ "缺少類型標(biāo)識(shí)符",
/*5*/ "字符串過長或缺少符號(hào)",
/*6*/ "此處缺少運(yùn)算的因子",
/*7*/ "符號(hào)表出界",
/*8*/ "標(biāo)識(shí)符重復(fù)定義",
/*9*/ "此處應(yīng)有'='",
/*10*/ "變量使用出錯(cuò)",
/*11*/ "無返回值函數(shù)不能用在此處",
/*12*/ "缺少“}”",
/*13*/ "缺少','",
/*14*/ "無返回值函數(shù)不能有return語句",
/*15*/ "無主函數(shù)",
/*16*/ "函數(shù)調(diào)用時(shí)參數(shù)個(gè)數(shù)不對(duì)",
/*17*/ "缺少'('",
/*18*/ "缺少')'",
/*19*/ "編譯生成指令數(shù)過多",
/*20*/ "標(biāo)識(shí)符未定義",
/*21*/ "轉(zhuǎn)換符用法錯(cuò)誤,為非變量型數(shù)據(jù)賦值",
/*22*/ "缺少“;”",
/*23*/ "缺少“{”",
/*24*/ "運(yùn)行棧泄漏"
/*25*/ "函數(shù)調(diào)用超過了最大的層次數(shù)",
/*26*/ "函數(shù)返回值與函數(shù)類型不匹配",
/*27*/ "此處應(yīng)為標(biāo)識(shí)符",
/*28*/ "變量的類型和值的類型不匹配",
};



int getsym();									//詞法分析程序
int enter(int lev,int type,int kind);			//把變量填入符號(hào)表
int constdeclaration();							//分析常量說明部分
int program();									//分析程序
int charcheck();								//檢查標(biāo)識(shí)符是否重復(fù)定義
int constdefine( int type );					//分析常量定義
int vardefine( int type);						//分析變量說明部分  
int returnfunction( int type)	;				//有返回值的函數(shù)
int voidfunction( );							//無返回值的函數(shù)定義語句
int statementArray( );							//語句列
int statement( );								//語句
int ifstatement( );								//if條件語句
int whilestatement( );							//while循環(huán)語句
int scanfstatement( );							//scanf讀語句
int printfstatement( );							//printf寫語句
int returnstatement( );							//return語句
int assignstatement(int a);						//賦值語句
int mainfunction( );							//主函數(shù)
int call(int a);								//函數(shù)調(diào)用語句
int expression();								//表達(dá)式
int gen(int op,int lev,int x);					//產(chǎn)生一條表達(dá)式
int term();										//項(xiàng)
int factor();									//因子
int find();										//在符號(hào)表中查找標(biāo)識(shí)符是否存在
int Interpret();								//解釋執(zhí)行程序
int backout();									//不用的變量要退出符號(hào)表
void error_msg(int i);								



/************************數(shù)字意義*****************************8

  (1)type,sym:

	標(biāo)識(shí)符			1				內(nèi)部字符串
	整數(shù)			2				整數(shù)值
	字符			4				字符
	字符串			5				字符串
 
   const			10				---
	int				11				---
	char			12				---
	void			13				---
	main			14				---
	if				15				---
	else			16				---
	do	(switch)	17				---
	while			18				---
	scanf			19				---
	printf			20				---
	return			21	 			---
	＋				31				---
	－				32				---
	*				33				---
	／				34				---
	}				35				---
	）				36				---
	（				37				---
	；				38				---
	，				39				---
	{				40				---
	"				41				---
 	"				42				---
  	'				43				---
	'				44				---
	>				45				---
	<				46				---
	==				47				---
	!=				48				---
	>=				49				---
	<=				50				---	
	=				51				---

 (2) type:

0	para(參數(shù))、
1	pro(有返回值的函數(shù))、
2	voidpro(無返回值的函數(shù))、
3	var（變量）、 
4	const（常量）、
5	main（主函數(shù)）

*************************************************  */