/*
	詞法分析內(nèi)核程序 0.28 (2003.10.19) [聲明文件]
	作者:Dwing

	Old version:
	0.1:Buffer Engine(Get all symbol once).
	0.2:Scan Engine(Get one symbol once).
	0.25:Combine Sym & Err Struct.
	0.26:Turn CPP to C.
	0.27:Add some extend keywords.
	0.28:Bugs fixed.
*/
#ifndef _GETSYM_H_
#define _GETSYM_H_

#include <stdlib.h>		//For memset()
#include <string.h>		//For strcpy()

#define ISLETTER(c)	((c)>='A'&&(c)<='Z'||(c)>='a'&&(c)<='z')
#define ISNUMBER(c)	((c)>='0'&&(c)<='9')
#define ISCHAR(c)	((c)>=33 &&(c)<=126)

#define MAX_SYM			32768	//最大符號(hào)量
#define MAX_SYMFORM		1024	//最大符號(hào)表長度
#define	MAX_NUMFORM		4096	//最大常數(shù)表長度

#define MAX_SYMLEN		31		//最大符號(hào)長度
#define MAX_NUMLEN		10		//最大常數(shù)長度
#define MAX_BUFFER		MAX_SYMLEN+1//最大緩沖長度

#define MAX_KEYWORD		27		//關(guān)鍵字?jǐn)?shù)量
#define MAX_OPWORDA		8		//單字運(yùn)算符數(shù)量
#define MAX_OPWORDB		4		//雙字運(yùn)算符數(shù)量
#define MAX_ENDWORD		8		//單字界符數(shù)量
#define MAX_ERROR		5		//錯(cuò)誤類型數(shù)量

#define TYPE_KEYWORD	1		//關(guān)鍵字類型號(hào)
#define TYPE_SYMBOL		2		//符號(hào)類型號(hào)
#define TYPE_NUMBER		3		//常量類型號(hào)
#define TYPE_OPWORD		4		//運(yùn)算符類型號(hào)
#define TYPE_ENDWORD	5		//界符類型號(hào)
#define TYPE_ERROR		-1		//錯(cuò)誤類型號(hào)

#define ERR_OVERSYMLEN	1		//以下是一般錯(cuò)誤號(hào)
#define ERR_OVERNUMLEN	2
#define ERR_NUMBER		3
#define ERR_WRONGOP		4
#define ERR_OVERSYMFORM	10001	//以下是嚴(yán)重錯(cuò)誤號(hào)
#define ERR_OVERNUMFORM 10002
#define ERR_OVERSYMNUM	10003
#define ERR_OVERERRNUM	10004

#ifdef __cplusplus
extern "C" {
#endif

struct SYM		//符號(hào)描述結(jié)構(gòu)體(含錯(cuò)誤描述結(jié)構(gòu))
{
	int type;		//類型號(hào)(0:錯(cuò)誤)
	int id;			//ID號(hào)(錯(cuò)誤值)
	int line;		//所在行數(shù)
//	int no;			//SYM編號(hào)/列號(hào)
	char name[MAX_SYMLEN+1];	//所取的詞
};

struct FORM		//表格結(jié)構(gòu)體
{
	int symnum;
	int numnum;
	struct SYMF		//符號(hào)表項(xiàng)結(jié)構(gòu)體
	{
		int id;
		char name[MAX_SYMLEN+1];
	}symf[MAX_SYMFORM];
	struct NUMF		//常量表項(xiàng)結(jié)構(gòu)體
	{
		int id;
		char name[MAX_NUMLEN+1];
	}numf[MAX_NUMFORM];
};

struct SYMINFO	//詞法分析信息結(jié)構(gòu)體
{
	int num;
	struct SYM sym[MAX_SYM];
	struct FORM form;
};
//取詞函數(shù)(返回讀字符數(shù)量,如果是0則表示結(jié)束,lin表示當(dāng)前行數(shù))
int __stdcall getsym(const char *in,struct SYM *out,int *ln,struct FORM *form);
//取所有詞函數(shù)(正常返回0,否則返回嚴(yán)重錯(cuò)誤號(hào))
int __stdcall getsyminfo(const char *in,struct SYMINFO *out);

#ifdef  __cplusplus
}
#endif
#endif