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📄 item.cpp

📁 一个在linux下的shell的计算器
💻 CPP
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/* * * * */#include <iostream>#include <string>#include "item.h"#include "exception.h"using namespace std;//////std::string TypeName(itemtype t){ switch(t) {  case EMPTY: return "nothing";  case INTEGER: return "integer";  case LOGICAL: return "logical";  case REAL: return "real";  case STRING: return "string";  case OPERATION: return "operation";  case LIST: return "list"; }; return "?";}//////Item::Item(){ name = ""; prev = next = NULL;}//////Item::~Item(){}//////itemtype Item::GetType() const{ return type;}//////long Item::ToInteger() const{ throw new InvalidConversion(GetType(), INTEGER);}//////bool Item::ToBoolean() const{ throw new InvalidConversion(GetType(), LOGICAL);}//////double Item::ToDouble() const{ throw new InvalidConversion(GetType(), REAL);}//////string Item::ToString() const{ throw new InvalidConversion(GetType(), STRING);}//////void Item::SetName(string s){ name = s;}//////string Item::GetName() const{ return name;}

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