#include
#include
#include



#define?num_word?13???????//關鍵字個數?
#define?num_tab?100?????//?符號表容量?
#define?num_bit?14???????//?數字的最大位數?
#define?al?10?????????//?標識符的最大長度??
#define?num_err?30????
#define?amax?2048?????//?地址上界
#define?levmax?3??????//?最多只允許3層嵌套
#define?cxmax?200?????//?最多的虛擬機代碼數
#define?num_ssize?500?//運行時數據棧元素最多為500個?

?
enum?SYM?{
	SYMUNUSE//0不設保留字
	SYMIDENTIFIER?SYMNUM
	SYMPLUS?SYMMINUSSYMMUL?SYMDIV?//+?-?*?/
	SYMODD?
	SYMEQL?//=
	SYMNEQ//!=
	SYMLSS?//?<
	SYMLEQ?//<=
	SYMBIG?//?>
	SYMBIGEQ?//?>=
	SYMLEFT?//?（
	SYMRIGHT?//?）
	SYMCOM?//?
	SYMSEM?//?;分號
	SYMPOT?//?.
	SYMASSI?//?:=
	SYMBEGIN?SYMEND?SYMIF?SYMTHEN?SYMWHILE
	SYMWRITE?SYMREAD?SYMDO?SYMCALL?SYMCONST
	SYMVAR?SYMPROCEDURE
};
#define?symnum?32


enum?object?{
	constant
	variable
	procedure
};


enum?fct?{
	LIT?OPR?LOD
	STO?CAL?INT
	JMP?JPC
};
#define?fctnum?8


struct?instruction
{
	enum?fct?f;?
	int?l;
	int?a;?????
};

//int?stacktop;
bool?listswitch;????
bool?tableswitch;??
char?ch;???
enum?SYM?sym;?
char?id[al?+?1];??????//?當前SYMIDENTIFIER，多出的一個字節用于存放0?
int?num;????????????//當前SYMNUM?
int?chadr?ll;?????????//?getch使用的計數器，chadr表示當前字符（ch）的位置?
int?cx;?????????????//?虛擬機代碼指針?取值范圍[0?cxmax-1]
char?line[81];??????//?讀取行緩沖區?
char?a[al?+?1];???????//?臨時符號，多出的一個字節用于存放0?
struct?instruction?code[cxmax];?//存放虛擬機代碼的數組?
char?word[num_word][al];????????//保留字?
enum?SYM?wsym[num_word];?????//保留字對應的符號值?
enum?SYM?ssym[256];??????//單字符的符號值?
char?mnemonic[fctnum][5];???//虛擬機代碼指令名稱?
bool?declbegsys[symnum];????//?表示聲明開始的符號集合?
bool?statbegsys[symnum];????//?表示語句開始的符號集合?
bool?facbegsys[symnum];?????//?表示因子開始的符號集合?

//符號表
struct?TABLE
{
	char?name[al];	???
	enum?object?kind;	
	int?val;????????????
	int?level;??????????
	int?adr;????????????
	int?size;??????????
};

struct?TABLE?table[num_tab];?//?符號表?

FILE*?fin;
char?fname[al];
int?err;????????//錯誤計數

void?error（int?n）;
void?GETSYM（）;
void?getch（）;
void?init（）;
void?GEN（enum?fct?x?int?y?int?z）;
void?test（bool*?s1?bool*?s2?int?n）;
int?inset（int?e?bool*?s）;
int?addset（bool*?sr?bool*?s1?bool*?s2?int?n）;
int?subset（bool*?sr?bool*?s1?bool*?s2?int?n）;
int?mulset（bool*?sr?bool*?s1?bool*?s2?int?n）;
int?BLOCK（int?lev?int?tx?bool*?fsys）;
void?exec（）;
void?factor（bool*?fsys?int*?ptx?int?lev）;
void?term（bool*?fsys?int*?ptx?int?lev）;
void?condition（bool*?fsys?int*?ptx?int?lev）;
void?expression（bool*?fsys?int*?ptx?int?lev）;
void?statement（bool*?fsys?int*?ptx?int?lev）;
void?listcode（int?cx0）;
void?printcode（）;
void?vardeclaration（int*?ptx?int?lev?int*?pdx）;
void?constdeclaration（int*?ptx?int?lev?int*?pdx）;
int?position（char*?idt?int?tx）;
void?enter（enum?object?k?int*?ptx?int?lev?int*?pdx）;
int?whereb（int?l?int*?s?int?b）;


void?init（）
{
	int?i;

	/*?設置單字符符號?*/
	for?（i?=?0;?i?<=?255;?i++）
	{
		ssym[i]?=?SYMUNUSE;
	}
	s

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----
?????目錄???????????0??2019-12-18?11:58??final\
?????目錄???????????0??2019-12-08?23:43??final\.vs\
?????目錄???????????0??2019-12-08?23:43??final\.vs\final\
?????目錄???????????0??2019-12-18?10:22??final\.vs\final\v16\
?????文件???????41984??2019-12-18?11:58??final\.vs\final\v16\.suo
?????文件?????5750784??2019-12-18?11:58??final\.vs\final\v16\Browse.VC.db
?????目錄???????????0??2019-12-08?23:43??final\.vs\final\v16\ipch\
?????目錄???????????0??2019-12-11?13:59??final\.vs\final\v16\ipch\AutoPCH\
?????目錄???????????0??2019-12-10?14:00??final\.vs\final\v16\ipch\AutoPCH\83aad7005a654c2b\
?????文件????31719424??2019-12-10?14:00??final\.vs\final\v16\ipch\AutoPCH\83aad7005a654c2b\FINAL.ipch
?????目錄???????????0??2019-12-10?12:32??final\.vs\final\v16\ipch\AutoPCH\8c6080a761c5afa0\
?????文件?????3801088??2019-12-10?12:32??final\.vs\final\v16\ipch\AutoPCH\8c6080a761c5afa0\FINAL.ipch
?????目錄???????????0??2019-12-10?13:04??final\.vs\final\v16\ipch\AutoPCH\c3613f418180513b\
?????文件?????3604480??2019-12-10?13:57??final\.vs\final\v16\ipch\AutoPCH\c3613f418180513b\FINAL.ipch
?????目錄???????????0??2019-12-12?13:53??final\.vs\final\v16\ipch\AutoPCH\dcb3fbd016563d50\
?????文件?????3604480??2019-12-18?10:22??final\.vs\final\v16\ipch\AutoPCH\dcb3fbd016563d50\FINAL.ipch
?????目錄???????????0??2019-12-17?19:24??final\Debug\
?????文件???????57856??2019-12-17?19:24??final\Debug\final.exe
?????文件??????781800??2019-12-17?19:24??final\Debug\final.ilk
?????文件?????????567??2019-12-17?19:24??final\Debug\final.log
?????文件???????64445??2019-12-17?19:24??final\Debug\final.obj
?????文件???????64421??2019-12-11?15:16??final\Debug\final.obj.enc
?????文件??????733184??2019-12-17?19:24??final\Debug\final.pdb
?????目錄???????????0??2019-12-17?19:24??final\Debug\final.tlog\
?????文件?????????750??2019-12-17?19:24??final\Debug\final.tlog\CL.command.1.tlog
?????文件????????4044??2019-12-17?19:24??final\Debug\final.tlog\CL.read.1.tlog
?????文件?????????384??2019-12-17?19:24??final\Debug\final.tlog\CL.write.1.tlog
?????文件?????????199??2019-12-17?19:24??final\Debug\final.tlog\final.lastbuildstate
?????文件????????1108??2019-12-17?19:24??final\Debug\final.tlog\link.command.1.tlog
?????文件????????3230??2019-12-17?19:24??final\Debug\final.tlog\link.read.1.tlog
?????文件?????????396??2019-12-17?19:24??final\Debug\final.tlog\link.write.1.tlog
............此處省略28個文件信息