parse.h

Linux下编写的一个表达式解析器可以计算= - * / 与或非运算 经过测试并带有测试用例！供大家参考

#ifndef _PARSE_H_
#define _PARSE_H_

#define _CHR_TYPE_INT_	   		1
#define  _CHR_TYPE_FLOAT_		2
#define _CHR_TYPE_SHORT_		3
#define _CHR_TYPE_DOUBLE_  		4
 
typedef char *LPSTR, *PSTR;
typedef const char *LPCSTR, *PCSTR;
typedef LPCSTR LPCTSTR;

class Parse
{
public:
	Parse ();
	~Parse();
	bool  DetectionStr(const char *str,int Type,void * p);
	char* GetErrorCode();

private:
	char 	m_str1[256];
	char *	m_strErrorInfo;
	int  	m_nNO;
	char 	m_str[256] ;
	int  	m_nLen;

private:
	double 			CalculateNum(float num1, float num2, char op);
	const char * 	FindLastOp(const char *str);
	double 			StrHexToInt(char* strSource);
	double 			CalculateExp(const char *str);
	int 			CheckStr();

};

#endif