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  char *tokendest;         /* Code to execute to destroy token data */
  char *vardest;           /* Code for the default non-terminal destructor */
  char *filename;          /* Name of the input file */
  char *outname;           /* Name of the current output file */
  char *tokenprefix;       /* A prefix added to token names in the .h file */
  int nconflict;           /* Number of parsing conflicts */
  int nactiontab;          /* Number of entries in the yy_action[] table */
  int nlookaheadtab;       /* Number of entries in yy_lookahead[] */
  int tablesize;           /* Total table size of all tables in bytes */
  int basisflag;           /* Print only basis configurations */
  int has_fallback;        /* True if any %fallback is seen in the grammar */
  int nolinenosflag;       /* True if #line statements should not be printed */
  char *argv0;             /* Name of the program */
};

    *aAction,                  /* The yy_action[] table under construction */
    *aLookahead;               /* A single new transaction set */
  int mnLookahead;             /* Minimum aLookahead[].lookahead */
  int mnAction;                /* Action associated with mnLookahead */
  int mxLookahead;             /* Maximum aLookahead[].lookahead */
  int nLookahead;              /* Used slots in aLookahead[] */
  int nLookaheadAlloc;         /* Slots allocated in aLookahead[] */
  int nterminal;               /* Number of terminal symbols */
  int nsymbol;                 /* total number of symbols */
};

/* Return the number of entries in the yy_action table */
#define acttab_lookahead_size(X) ((X)->nAction)

/* The value for the N-th entry in yy_action */
#define acttab_yyaction(X,N)  ((X)->aAction[N].action)

/* The value for the N-th entry in yy_lookahead */
#define acttab_yylookahead(X,N)  ((X)->aAction[N].lookahead)

/* Free all memory associated with the given acttab */
void acttab_free(acttab *p){
  free( p->aAction );
  free( p->aLookahead );
  free( p );
}

/* Allocate a new acttab structure */
acttab *acttab_alloc(int nsymbol, int nterminal){
  acttab *p = (acttab *) calloc( 1, sizeof(*p) );
  if( p==0 ){
    fprintf(stderr,"Unable to allocate memory for a new acttab.");
    exit(1);
  }
  memset(p, 0, sizeof(*p));
  p->nsymbol = nsymbol;
  p->nterminal = nterminal;
  return p;
}

/* Add a new action to the current transaction set.
**
** This routine is called once for each lookahead for a particular
** state.

/*
** Add the transaction set built up with prior calls to acttab_action()
** into the current action table.  Then reset the transaction set back
** to an empty set in preparation for a new round of acttab_action() calls.
**
** Return the offset into the action table of the new transaction.
**
** If the makeItSafe parameter is true, then the offset is chosen so that
** it is impossible to overread the yy_lookaside[] table regardless of
** the lookaside token.  This is done for the terminal symbols, as they
** come from external inputs and can contain syntax errors.  When makeItSafe
** is false, there is more flexibility in selecting offsets, resulting in
** a smaller table.  For non-terminal symbols, which are never syntax errors,
** makeItSafe can be false.
*/
int acttab_insert(acttab *p, int makeItSafe){
  int i, j, k, n, end;
  assert( p->nLookahead>0 );

  /* Make sure we have enough space to hold the expanded action table
  ** in the worst case.  The worst case occurs if the transaction set
  ** must be appended to the current action table
  */
  n = p->nsymbol + 1;
  if( p->nAction + n >= p->nActionAlloc ){
    int oldAlloc = p->nActionAlloc;
    p->nActionAlloc = p->nAction + n + p->nActionAlloc + 20;
    p->aAction = (struct lookahead_action *) realloc( p->aAction,
                          sizeof(p->aAction[0])*p->nActionAlloc);
    if( p->aAction==0 ){
      fprintf(stderr,"malloc failed\n");

  /* Scan the existing action table looking for an offset that is a
  ** duplicate of the current transaction set.  Fall out of the loop
  ** if and when the duplicate is found.
  **
  ** i is the index in p->aAction[] where p->mnLookahead is inserted.
  */
  end = makeItSafe ? p->mnLookahead : 0;
  for(i=p->nAction-1; i>=end; i--){
    if( p->aAction[i].lookahead==p->mnLookahead ){
      /* All lookaheads and actions in the aLookahead[] transaction
      ** must match against the candidate aAction[i] entry. */
      if( p->aAction[i].action!=p->mnAction ) continue;
      for(j=0; j<p->nLookahead; j++){
        k = p->aLookahead[j].lookahead - p->mnLookahead + i;
        if( k<0 || k>=p->nAction ) break;

    }
  }

  /* If no existing offsets exactly match the current transaction, find an
  ** an empty offset in the aAction[] table in which we can add the
  ** aLookahead[] transaction.
  */
  if( i<end ){
    /* Look for holes in the aAction[] table that fit the current
    ** aLookahead[] transaction.  Leave i set to the offset of the hole.
    ** If no holes are found, i is left at p->nAction, which means the
    ** transaction will be appended. */
    i = makeItSafe ? p->mnLookahead : 0;
    for(; i<p->nActionAlloc - p->mxLookahead; i++){
      if( p->aAction[i].lookahead<0 ){
        for(j=0; j<p->nLookahead; j++){
          k = p->aLookahead[j].lookahead - p->mnLookahead + i;
          if( k<0 ) break;
          if( p->aAction[k].lookahead>=0 ) break;
        }
        if( j<p->nLookahead ) continue;
        for(j=0; j<p->nAction; j++){
          if( p->aAction[j].lookahead==j+p->mnLookahead-i ) break;
        }
        if( j==p->nAction ){
          break;  /* Fits in empty slots */
        }
      }
    }
  }
  /* Insert transaction set at index i. */
#if 0
  printf("Acttab:");
  for(j=0; j<p->nLookahead; j++){
    printf(" %d", p->aLookahead[j].lookahead);
  }
  printf(" inserted at %d\n", i);
#endif
  for(j=0; j<p->nLookahead; j++){
    k = p->aLookahead[j].lookahead - p->mnLookahead + i;
    p->aAction[k] = p->aLookahead[j];
    if( k>=p->nAction ) p->nAction = k+1;
  }
  if( makeItSafe && i+p->nterminal>p->nAction ) p->nAction = i+p->nterminal;
  p->nLookahead = 0;

  /* Return the offset that is added to the lookahead in order to get the
  ** index into yy_action of the action */
  return i - p->mnLookahead;
}

/*
** Return the size of the action table without the trailing syntax error
** entries.
*/
int acttab_action_size(acttab *p){
  int n = p->nAction;
  while( n>0 && p->aAction[n-1].lookahead<0 ){ n--; }
  return n;
}

/********************** From the file "build.c" *****************************/
/*
** Routines to construction the finite state machine for the LEMON
** parser generator.
*/

    stats_line("terminal symbols", lem.nterminal);
    stats_line("non-terminal symbols", lem.nsymbol - lem.nterminal);
    stats_line("total symbols", lem.nsymbol);
    stats_line("rules", lem.nrule);
    stats_line("states", lem.nxstate);
    stats_line("conflicts", lem.nconflict);
    stats_line("action table entries", lem.nactiontab);
    stats_line("lookahead table entries", lem.nlookaheadtab);
    stats_line("total table size (bytes)", lem.tablesize);
  }
  if( lem.nconflict > 0 ){
    fprintf(stderr,"%d parsing conflicts.\n",lem.nconflict);
  }

  /* return 0 on success, 1 on failure. */

  }
  mxTknOfst = mnTknOfst = 0;
  mxNtOfst = mnNtOfst = 0;
  /* In an effort to minimize the action table size, use the heuristic
  ** of placing the largest action sets first */
  for(i=0; i<lemp->nxstate*2; i++) ax[i].iOrder = i;
  qsort(ax, lemp->nxstate*2, sizeof(ax[0]), axset_compare);
  pActtab = acttab_alloc(lemp->nsymbol, lemp->nterminal);
  for(i=0; i<lemp->nxstate*2 && ax[i].nAction>0; i++){
    stp = ax[i].stp;
    if( ax[i].isTkn ){
      for(ap=stp->ap; ap; ap=ap->next){
        int action;
        if( ap->sp->index>=lemp->nterminal ) continue;
        action = compute_action(lemp, ap);
        if( action<0 ) continue;
        acttab_action(pActtab, ap->sp->index, action);
      }
      stp->iTknOfst = acttab_insert(pActtab, 1);
      if( stp->iTknOfst<mnTknOfst ) mnTknOfst = stp->iTknOfst;
      if( stp->iTknOfst>mxTknOfst ) mxTknOfst = stp->iTknOfst;
    }else{
      for(ap=stp->ap; ap; ap=ap->next){
        int action;
        if( ap->sp->index<lemp->nterminal ) continue;
        if( ap->sp->index==lemp->nsymbol ) continue;
        action = compute_action(lemp, ap);
        if( action<0 ) continue;
        acttab_action(pActtab, ap->sp->index, action);
      }
      stp->iNtOfst = acttab_insert(pActtab, 0);
      if( stp->iNtOfst<mnNtOfst ) mnNtOfst = stp->iNtOfst;
      if( stp->iNtOfst>mxNtOfst ) mxNtOfst = stp->iNtOfst;
    }
#if 0  /* Uncomment for a trace of how the yy_action[] table fills out */
    { int jj, nn;
      for(jj=nn=0; jj<pActtab->nAction; jj++){
        if( pActtab->aAction[jj].action<0 ) nn++;

  **                     shifting terminals.
  **  yy_reduce_ofst[]   For each state, the offset into yy_action for
  **                     shifting non-terminals after a reduce.
  **  yy_default[]       Default action for each state.
  */

  /* Output the yy_action table */
  lemp->nactiontab = n = acttab_action_size(pActtab);
  lemp->tablesize += n*szActionType;
  fprintf(out,"#define YY_ACTTAB_COUNT (%d)\n", n); lineno++;
  fprintf(out,"static const YYACTIONTYPE yy_action[] = {\n"); lineno++;
  for(i=j=0; i<n; i++){
    int action = acttab_yyaction(pActtab, i);
    if( action<0 ) action = lemp->noAction;
    if( j==0 ) fprintf(out," /* %5d */ ", i);
    fprintf(out, " %4d,", action);
    if( j==9 || i==n-1 ){
      fprintf(out, "\n"); lineno++;
      j = 0;
    }else{
      j++;
    }
  }
  fprintf(out, "};\n"); lineno++;

  /* Output the yy_lookahead table */
  lemp->nlookaheadtab = n = acttab_lookahead_size(pActtab);
  lemp->tablesize += n*szCodeType;
  fprintf(out,"static const YYCODETYPE yy_lookahead[] = {\n"); lineno++;
  for(i=j=0; i<n; i++){
    int la = acttab_yylookahead(pActtab, i);
    if( la<0 ) la = lemp->nsymbol;
    if( j==0 ) fprintf(out," /* %5d */ ", i);
    fprintf(out, " %4d,", la);
    if( j==9 || i==n-1 ){
      fprintf(out, "\n"); lineno++;
      j = 0;
    }else{
      j++;
    }
  }
  fprintf(out, "};\n"); lineno++;

  /* Output the yy_shift_ofst[] table */
  n = lemp->nxstate;
  while( n>0 && lemp->sorted[n-1]->iTknOfst==NO_OFFSET ) n--;

  fprintf(out, "#define YY_SHIFT_COUNT    (%d)\n", n-1); lineno++;
  fprintf(out, "#define YY_SHIFT_MIN      (%d)\n", mnTknOfst); lineno++;
  fprintf(out, "#define YY_SHIFT_MAX      (%d)\n", mxTknOfst); lineno++;
  fprintf(out, "static const %s yy_shift_ofst[] = {\n",
       minimum_size_type(mnTknOfst, lemp->nterminal+lemp->nactiontab, &sz));
       lineno++;
  lemp->tablesize += n*sz;

    }else{
      j++;
    }
  }
  fprintf(out, "};\n"); lineno++;

  /* Output the yy_reduce_ofst[] table */

  n = lemp->nxstate;
  while( n>0 && lemp->sorted[n-1]->iNtOfst==NO_OFFSET ) n--;
  fprintf(out, "#define YY_REDUCE_COUNT (%d)\n", n-1); lineno++;
  fprintf(out, "#define YY_REDUCE_MIN   (%d)\n", mnNtOfst); lineno++;
  fprintf(out, "#define YY_REDUCE_MAX   (%d)\n", mxNtOfst); lineno++;
  fprintf(out, "static const %s yy_reduce_ofst[] = {\n",
          minimum_size_type(mnNtOfst-1, mxNtOfst, &sz)); lineno++;

  }
  tplt_xfer(lemp->name, in, out, &lineno);

  /* Generate a table containing the symbolic name of every symbol
  */
  for(i=0; i<lemp->nsymbol; i++){
    lemon_sprintf(line,"\"%s\",",lemp->symbols[i]->name);
    fprintf(out,"  /* %4d */ \"%s\",\n",i, lemp->symbols[i]->name); lineno++;

  }

  tplt_xfer(lemp->name,in,out,&lineno);

  /* Generate a table containing a text string that describes every
  ** rule in the rule set of the grammar.  This information is used
  ** when tracing REDUCE actions.
  */
  for(i=0, rp=lemp->rule; rp; rp=rp->next, i++){

**
** The action table is constructed as a single large table named yy_action[].
** Given state S and lookahead X, the action is computed as either:
**
**    (A)   N = yy_action[ yy_shift_ofst[S] + X ]
**    (B)   N = yy_default[S]
**
** The (A) formula is preferred.  The B formula is used instead if

** yy_lookahead[yy_shift_ofst[S]+X] is not equal to X.




**
** The formulas above are for computing the action when the lookahead is
** a terminal symbol.  If the lookahead is a non-terminal (as occurs after
** a reduce action) then the yy_reduce_ofst[] array is used in place of
** the yy_shift_ofst[] array.

**
** The following are the tables generated in this section:
**
**  yy_action[]        A single table containing all actions.
**  yy_lookahead[]     A table containing the lookahead for each entry in
**                     yy_action.  Used to detect hash collisions.
**  yy_shift_ofst[]    For each state, the offset into yy_action for

 
  if( stateno>YY_MAX_SHIFT ) return stateno;
  assert( stateno <= YY_SHIFT_COUNT );
  do{
    i = yy_shift_ofst[stateno];
    assert( iLookAhead!=YYNOCODE );
    i += iLookAhead;
    assert( i>=0 && i<sizeof(yy_lookahead)/sizeof(yy_lookahead[0]) );
    if( yy_lookahead[i]!=iLookAhead ){
#ifdef YYFALLBACK
      YYCODETYPE iFallback;            /* Fallback token */
      if( iLookAhead<sizeof(yyFallback)/sizeof(yyFallback[0])
             && (iFallback = yyFallback[iLookAhead])!=0 ){
#ifndef NDEBUG
        if( yyTraceFILE ){
          fprintf(yyTraceFILE, "%sFALLBACK %s => %s\n",

  if( stateno>YY_REDUCE_COUNT ){
    return yy_default[stateno];
  }
#else
  assert( stateno<=YY_REDUCE_COUNT );
#endif
  i = yy_reduce_ofst[stateno];

  assert( iLookAhead!=YYNOCODE );
  i += iLookAhead;
#ifdef YYERRORSYMBOL
  if( i<0 || i>=YY_ACTTAB_COUNT || yy_lookahead[i]!=iLookAhead ){
    return yy_default[stateno];
  }
#else