//File instlist.h

#ifndef INSTLISTH
#define INSTLISTH

#include "token.h"
#include "quad.h"

const JUMPINST1STDIGIT=8;

class instnode {
  friend class headnode;
  friend class instlist;
  friend class codegenerator;
  private:
    int opcode,operand;
    instnode* nextinst;
};

class headnode {
  friend class instlist;
  friend class codegenerator;
  private:
    int quadnum,instnum,jumptoquad;
    instnode* nextinst;
    headnode* nexthead;
};

class instlist {
  friend class codegenerator;
  private:
    headnode* head;
    headnode* hptr;
    instnode* iptr;
    int qnum,inum;
  public:
    instlist();
    ~instlist();
    void createentry(quadruple q);
    void enterinst(int opco,token opnd);
    void repairjumps();
    int quadnumber() {return qnum;};
};

#endif