#include <assert.h>
#include "Number.h"
#include "Fraction.h"
#include "Integer.h"

Number::Number(int n) : rep(new Integer(n)) {}

static int gcd(int a, int b){
  if(b == 0)
    return a;
  else
    return gcd(b, a % b);
}

Number::Number(int num, int den){
  assert(den != 0);
  if(den < 0){
    num = -num;
    den = -den;
  }
  int c = gcd(num, den);
  num /= c;
  den /= c;
  if(den == 1)
    rep = new Integer(num);
  else
    rep = new Fraction(num, den);
}

Number::Number(const Number &n) : rep(n.rep->copy()) {}

Number & Number::operator=(const Number &n){
  if(&n == this)
    return *this;
  else{
    delete rep;
    rep = n.rep->copy();
    return *this;
  }
}

void Number::display() const {
  rep->display();
}

Number Number::operator+(const Number & n) const {
  return rep->add(n.rep);
}

Number Number::operator/(const Number & n) const {
  return rep->div(n.rep);
}
 
Number::~Number(){
  delete rep;
}