exception.cpp

一个在linux下的shell的计算器

/*
 *
 *
 *
 */

#include <string>
#include <sstream>
#include "exception.h"

using namespace std;

Exception::~Exception()
{

}

string StackError::ToString()
{
 return "[Error] Not enough values in the stack.";
}

UnknownOperation::UnknownOperation(string op)
{
 name = op;
}

string UnknownOperation::ToString()
{
 ostringstream ostr;
 ostr << "[Error] Unknown operation \"" << name << "\".";
 return ostr.str();
}

UnknownVariable::UnknownVariable(string var)
{
 name = var;
}

string UnknownVariable::ToString()
{
 ostringstream ostr;
 ostr << "[Error] Unknown variable \"" << name << "\".";
 return ostr.str();
}






InvalidConversion::InvalidConversion(itemtype from, itemtype to)
{
 fromtype = from;
 totype = to;
}

string InvalidConversion::ToString()
{
 ostringstream ostr;
 ostr << "[Error] Unable to convert from " << TypeName(fromtype);
 ostr << " to " << TypeName(totype) << "." << endl;
 return ostr.str();
}