Question about RB0/INT interrupts

#define X            1
#define Y      2
#define Z             3
#define W      4

unsigned short SWITCH = 0;

void Interrupt()
{
  if(INTCON.INTF)
  {
       SWITCH = W ;
       PORTA.F1 = 1;
       INTCON.INTF = 0;
       INTCON.RBIF = 0;
       INTCON.RBIE = 0;
  }
  else if(INTCON.RBIF)
  {
      if(PORTB.F5 == 0)                 
      {
         SWITCH = X;
         INTCON.RBIF = 0;
      }
      else if(PORTB.F6 == 0)             
      {
         SWITCH = Y;
         INTCON.RBIF = 0;
      }
      else if(PORTB.F7 == 0)
      {
         SWITCH = X;
         INTCON.RBIF = 0;
      }
   }
}

void main()
{ 
   init_all();

   do {
        switch(SWITCH)
        {
          case X:
                  INTCON.GIE = 0;
                 //do something here           
                 INTCON = 0b10011000;
          break;

          case Y:
                 INTCON.GIE = 0;
                 //do something here   
                 INTCON = 0b10011000;
          break;

          case Z:
                 INTCON.GIE = 0;
                 //do something here   
                 INTCON = 0b10011000;
          break;
          
          case W:
                 INTCON.GIE = 0;
                 PORTA.F0 = 1;
                 INTCON = 0b10011000;
          break;
          }
     } while(1);