#include"Term.h"
#include<iostream>
#include<stack>
#include<cstring>

using namespace std;
/*
Term(const Term& term)  // Copy constructor.
{
   value = term.value;
   termsGrouped = term.termsGrouped;
   positionsCovered = term.positionsCovered;
} 
*/
Term::Term(int val)
   {
      value = 0;
      groupTerm( val );
   }

void Term::coverPosition(int val)
   {
    positionsCovered.insert( val );
   }
    
void Term::groupTerm(int val)
   {
    termsGrouped.insert( val );
    if(value < val) value = val; 
   }
   
void Term::printTerm(char arr[][5])
{
     stack<char*> result;
     int cnt = 0;
     set<int>::iterator it_pc = positionsCovered.begin();

     while(value)
     {
        if(cnt != *(it_pc))
        {
           if( value%2 )
            result.push( arr[cnt] );
           else
            result.push( strcpy(arr[cnt], "'") );
           value = value / 2;
        }
        else if(it_pc != termsGrouped.end())
            cnt++;
     }
     
     while( !result.empty() )     
     {       
        cout<<result.top();        
        result.pop();
     }
}
     
bool operator < (const Term& left, const Term& right)
{
     set<int>::iterator it_left_tg;
     set<int>::iterator it_right_tg;
     
     for(it_left_tg = left.termsGrouped.begin(),
         it_right_tg = right.termsGrouped.begin()
                   ;it_left_tg != left.termsGrouped.end()
                   ;it_left_tg++, it_right_tg++)
     {
        if(*it_left_tg > *it_right_tg)
         return false;
     }
     //Execution reaches here iff left<right.
     return true;
}