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Expression.h
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Expression.h
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#include <iostream>
#include <vector>
#include <stack>
#include <string>
#include <map>
#include "mycomplex.h"
using namespace std;
class Expression
{
public:
Expression(const string& str);
string GetError() const;
private:
string m_strExp; //表达式字符串
string m_strError; //错误原因
map<string, double> m_mapDouble; //保存对应的double
string m_strDoubleHead;
int m_nDoubleIndex1;
int m_nDoubleIndex2;
string m_strScanDouble;
map<string, mycomplex> m_mapComplex; //保存对应的复数
string m_strComplexHead;
int m_nComplexIndex1; //字符索引1
int m_nComplexIndex2; //字符索引2
string m_strScanComplex;
string m_strInfix;
vector<string> m_vecInfix;
vector<string> m_vecPostfix;
public:
//返回值表示表达式是否正确,参数com为计算结果
bool Compute(mycomplex& com);
protected:
//检查左括号与右括号是否是对应
bool CheckParenthesis(const string& str);
//检查左括号的下一个字符是否是操作符
//检查右括号的下一个字符是否是操作符
bool CheckOperatorPos(const string& str);
bool CheckImageFlag(const string& str);
//把相关数字转换成字符
string ConvertDouble(const string& str);
string AddMapDoubleMember(double d);
string ConvertComplex(const string& str);
string AddMapComplexMember(mycomplex com);
string ConvertDoubleToComplex(const string& str);
vector<string> ConvertStringToInfix(const string& str);
vector<string> ConvertInfixToPostfix(vector<string>& vec);
int Level(string c);
mycomplex Compute2(vector<string>& vec, string& str);
int isOperator(char c);
bool CheckDotPos(const string& str);
};