token.h

一个命令行运算器源代码 用C++写的命令行运算器

#ifndef _Token_h
#define _Token_h

class Token
{
public:
    Token(char c = EOF);
    Token(double);

    int typ()const;
    double num()const;
    char sym()const;
    int pri()const;

    static const int EOF = -1;
    static const int EX = 0;
    static const int OP = 1;
    static const int LO = 100;

private:
    int type;
    union con
    {
        double num;
        char sym;
    }content;
    unsigned priority;

    static int varpri;
};

inline int Token::typ()const
{
    return type;
}

inline double Token::num()const
{
    return content.num;
}

inline char Token::sym()const
{
    return content.sym;
}

inline int Token::pri()const
{
    return priority;
}

#endif