#ifndef ___FUNDLS
#define ___FUNDLS

#include <iostream.h>

typedef int BOOLEAN;
const TRUE       =  1;
const FALSE      =  0;
const CONST_FLAG = 99;
const LIST_SIZE  = 20;
const TOKEN_SIZE = 20;
const ERROR_FLAG = -1;    // assume this is an illegal value

///////////////////////// THE CLASS OFFSET //////////////////////////////

// In an offset pair,
// the first element is an integer giving the number of activation
//   records backward to search
// the second element is an integer giving the index position within
//   the given list in the given activation record
// These elements may be accessed by the public functions
//   "get_first" and "get_second".

class offset   								{
protected:
    int first;
    int second;
public:
    offset(int f, int s) {first=f; second=s;};  // constructor
    int get_first(void)  {return first;};
    int get_second(void) {return second;};				};


// Overload the C++ output operator to handle offsets

ostream& operator<<(ostream &os, offset *o);

#endif