/* Id: btyaccpar.skel,v 1.13 2021/08/08 19:56:28 tom Exp  */

#include "defs.h"

/*  If the skeleton is changed, the banner should be changed so that    */
/*  the altered version can be easily distinguished from the original.  */
/*                                                                      */
/*  The #defines included with the banner are there because they are    */
/*  useful in subsequent code.  The macros #defined in the header or    */
/*  the body either are not useful outside of semantic actions or       */
/*  are conditional.                                                    */

%% banner
/* original parser id follows */
/* yysccsid[] = "@(#)yaccpar    1.9 (Berkeley) 02/21/93" */
/* (use YYMAJOR/YYMINOR for ifdefs dependent on parser version) */

#define YYBYACC 1
%% insert VERSION here

#define YYEMPTY        (-1)
#define yyclearin      (yychar = YYEMPTY)
#define yyerrok        (yyerrflag = 0)
#define YYRECOVERING() (yyerrflag != 0)
#define YYENOMEM       (-2)
#define YYEOF          0
%% xdecls

extern int YYPARSE_DECL();
%% tables
extern const YYINT yylhs[];
extern const YYINT yylen[];
extern const YYINT yydefred[];
extern const YYINT yystos[];
extern const YYINT yydgoto[];
extern const YYINT yysindex[];
extern const YYINT yyrindex[];
%%ifdef YYBTYACC
extern const YYINT yycindex[];
%%endif
extern const YYINT yygindex[];
extern const YYINT yytable[];
extern const YYINT yycheck[];
%%ifdef YYBTYACC
extern const YYINT yyctable[];
%%endif

#if YYDEBUG || defined(yytname)
extern const char *const yyname[];
#endif
#if YYDEBUG
extern const char *const yyrule[];
#endif
%% global_vars

#if YYDEBUG
int      yydebug;
#endif
%% impure_vars

int      yyerrflag;
int      yychar;
YYSTYPE  yyval;
YYSTYPE  yylval;
int      yynerrs;

#if defined(YYLTYPE) || defined(YYLTYPE_IS_DECLARED)
YYLTYPE  yyloc; /* position returned by actions */
YYLTYPE  yylloc; /* position from the lexer */
#endif
%% hdr_defs

#if defined(YYLTYPE) || defined(YYLTYPE_IS_DECLARED)
#ifndef YYLLOC_DEFAULT
#define YYLLOC_DEFAULT(loc, rhs, n) \
do \
{ \
   if (n == 0) \
   { \
       (loc).first_line   = YYRHSLOC(rhs, 0).last_line; \
       (loc).first_column = YYRHSLOC(rhs, 0).last_column; \
       (loc).last_line    = YYRHSLOC(rhs, 0).last_line; \
       (loc).last_column  = YYRHSLOC(rhs, 0).last_column; \
   } \
   else \
   { \
       (loc).first_line   = YYRHSLOC(rhs, 1).first_line; \
       (loc).first_column = YYRHSLOC(rhs, 1).first_column; \
       (loc).last_line    = YYRHSLOC(rhs, n).last_line; \
       (loc).last_column  = YYRHSLOC(rhs, n).last_column; \
   } \
} while (0)
#endif /* YYLLOC_DEFAULT */
#endif /* defined(YYLTYPE) || defined(YYLTYPE_IS_DECLARED) */
%%ifdef YYBTYACC

#ifndef YYLVQUEUEGROWTH
#define YYLVQUEUEGROWTH 32
#endif
%%endif

/* define the initial stack-sizes */
#ifdef YYSTACKSIZE
#undef YYMAXDEPTH
#define YYMAXDEPTH  YYSTACKSIZE
#else
#ifdef YYMAXDEPTH
#define YYSTACKSIZE YYMAXDEPTH
#else
#define YYSTACKSIZE 10000
#define YYMAXDEPTH  10000
#endif
#endif

#ifndef YYINITSTACKSIZE
#define YYINITSTACKSIZE 200
#endif

typedef struct {
   unsigned stacksize;
   YYINT    *s_base;
   YYINT    *s_mark;
   YYINT    *s_last;
   YYSTYPE  *l_base;
   YYSTYPE  *l_mark;
#if defined(YYLTYPE) || defined(YYLTYPE_IS_DECLARED)
   YYLTYPE  *p_base;
   YYLTYPE  *p_mark;
#endif
} YYSTACKDATA;
%%ifdef YYBTYACC

struct YYParseState_s
{
   struct YYParseState_s *save;    /* Previously saved parser state */
   YYSTACKDATA            yystack; /* saved parser stack */
   int                    state;   /* saved parser state */
   int                    errflag; /* saved error recovery status */
   int                    lexeme;  /* saved index of the conflict lexeme in the lexical queue */
   YYINT                  ctry;    /* saved index in yyctable[] for this conflict */
};
typedef struct YYParseState_s YYParseState;
%%endif YYBTYACC
%% hdr_vars
/* variables for the parser stack */
static YYSTACKDATA yystack;
%%ifdef YYBTYACC

/* Current parser state */
static YYParseState *yyps = 0;

/* yypath != NULL: do the full parse, starting at *yypath parser state. */
static YYParseState *yypath = 0;

/* Base of the lexical value queue */
static YYSTYPE *yylvals = 0;

/* Current position at lexical value queue */
static YYSTYPE *yylvp = 0;

/* End position of lexical value queue */
static YYSTYPE *yylve = 0;

/* The last allocated position at the lexical value queue */
static YYSTYPE *yylvlim = 0;

#if defined(YYLTYPE) || defined(YYLTYPE_IS_DECLARED)
/* Base of the lexical position queue */
static YYLTYPE *yylpsns = 0;

/* Current position at lexical position queue */
static YYLTYPE *yylpp = 0;

/* End position of lexical position queue */
static YYLTYPE *yylpe = 0;

/* The last allocated position at the lexical position queue */
static YYLTYPE *yylplim = 0;
#endif

/* Current position at lexical token queue */
static YYINT  *yylexp = 0;

static YYINT  *yylexemes = 0;
%%endif YYBTYACC
%% body_vars
   int      yyerrflag;
   int      yychar;
   YYSTYPE  yyval;
   YYSTYPE  yylval;
   int      yynerrs;

#if defined(YYLTYPE) || defined(YYLTYPE_IS_DECLARED)
   YYLTYPE  yyloc; /* position returned by actions */
   YYLTYPE  yylloc; /* position from the lexer */
#endif

   /* variables for the parser stack */
   YYSTACKDATA yystack;
%%ifdef YYBTYACC

   /* Current parser state */
   static YYParseState *yyps = 0;

   /* yypath != NULL: do the full parse, starting at *yypath parser state. */
   static YYParseState *yypath = 0;

   /* Base of the lexical value queue */
   static YYSTYPE *yylvals = 0;

   /* Current position at lexical value queue */
   static YYSTYPE *yylvp = 0;

   /* End position of lexical value queue */
   static YYSTYPE *yylve = 0;

   /* The last allocated position at the lexical value queue */
   static YYSTYPE *yylvlim = 0;

#if defined(YYLTYPE) || defined(YYLTYPE_IS_DECLARED)
   /* Base of the lexical position queue */
   static YYLTYPE *yylpsns = 0;

   /* Current position at lexical position queue */
   static YYLTYPE *yylpp = 0;

   /* End position of lexical position queue */
   static YYLTYPE *yylpe = 0;

   /* The last allocated position at the lexical position queue */
   static YYLTYPE *yylplim = 0;
#endif

   /* Current position at lexical token queue */
   static YYINT  *yylexp = 0;

   static YYINT  *yylexemes = 0;
%%endif YYBTYACC
%% body_1

/* For use in generated program */
#define yydepth (int)(yystack.s_mark - yystack.s_base)
%%ifdef YYBTYACC
#define yytrial (yyps->save)
%%endif

#if YYDEBUG
#include <stdio.h>      /* needed for printf */
#endif

#include <stdlib.h>     /* needed for malloc, etc */
#include <string.h>     /* needed for memset */

/* allocate initial stack or double stack size, up to YYMAXDEPTH */
static int yygrowstack(YYSTACKDATA *data)
{
   int i;
   unsigned newsize;
   YYINT *newss;
   YYSTYPE *newvs;
#if defined(YYLTYPE) || defined(YYLTYPE_IS_DECLARED)
   YYLTYPE *newps;
#endif

   if ((newsize = data->stacksize) == 0)
       newsize = YYINITSTACKSIZE;
   else if (newsize >= YYMAXDEPTH)
       return YYENOMEM;
   else if ((newsize *= 2) > YYMAXDEPTH)
       newsize = YYMAXDEPTH;

   i = (int) (data->s_mark - data->s_base);
   newss = (YYINT *)realloc(data->s_base, newsize * sizeof(*newss));
   if (newss == 0)
       return YYENOMEM;

   data->s_base = newss;
   data->s_mark = newss + i;

   newvs = (YYSTYPE *)realloc(data->l_base, newsize * sizeof(*newvs));
   if (newvs == 0)
       return YYENOMEM;

   data->l_base = newvs;
   data->l_mark = newvs + i;

#if defined(YYLTYPE) || defined(YYLTYPE_IS_DECLARED)
   newps = (YYLTYPE *)realloc(data->p_base, newsize * sizeof(*newps));
   if (newps == 0)
       return YYENOMEM;

   data->p_base = newps;
   data->p_mark = newps + i;
#endif

   data->stacksize = newsize;
   data->s_last = data->s_base + newsize - 1;

#if YYDEBUG
   if (yydebug)
       fprintf(stderr, "%sdebug: stack size increased to %d\n", YYPREFIX, newsize);
#endif
   return 0;
}

#if YYPURE || defined(YY_NO_LEAKS)
static void yyfreestack(YYSTACKDATA *data)
{
   free(data->s_base);
   free(data->l_base);
#if defined(YYLTYPE) || defined(YYLTYPE_IS_DECLARED)
   free(data->p_base);
#endif
   memset(data, 0, sizeof(*data));
}
#else
#define yyfreestack(data) /* nothing */
#endif /* YYPURE || defined(YY_NO_LEAKS) */
%%ifdef YYBTYACC

static YYParseState *
yyNewState(unsigned size)
{
   YYParseState *p = (YYParseState *) malloc(sizeof(YYParseState));
   if (p == NULL) return NULL;

   p->yystack.stacksize = size;
   if (size == 0)
   {
       p->yystack.s_base = NULL;
       p->yystack.l_base = NULL;
#if defined(YYLTYPE) || defined(YYLTYPE_IS_DECLARED)
       p->yystack.p_base = NULL;
#endif
       return p;
   }
   p->yystack.s_base    = (YYINT *) malloc(size * sizeof(YYINT));
   if (p->yystack.s_base == NULL) return NULL;
   p->yystack.l_base    = (YYSTYPE *) malloc(size * sizeof(YYSTYPE));
   if (p->yystack.l_base == NULL) return NULL;
   memset(p->yystack.l_base, 0, size * sizeof(YYSTYPE));
#if defined(YYLTYPE) || defined(YYLTYPE_IS_DECLARED)
   p->yystack.p_base    = (YYLTYPE *) malloc(size * sizeof(YYLTYPE));
   if (p->yystack.p_base == NULL) return NULL;
   memset(p->yystack.p_base, 0, size * sizeof(YYLTYPE));
#endif

   return p;
}

static void
yyFreeState(YYParseState *p)
{
   yyfreestack(&p->yystack);
   free(p);
}
%%endif YYBTYACC

#define YYABORT  goto yyabort
#define YYREJECT goto yyabort
#define YYACCEPT goto yyaccept
#define YYERROR  goto yyerrlab
%%ifdef YYBTYACC
#define YYVALID        do { if (yyps->save)            goto yyvalid; } while(0)
#define YYVALID_NESTED do { if (yyps->save && \
                               yyps->save->save == 0) goto yyvalid; } while(0)
%%endif

int
YYPARSE_DECL()
{
%% body_2
   int yym, yyn, yystate, yyresult;
%%ifdef YYBTYACC
   int yynewerrflag;
   YYParseState *yyerrctx = NULL;
%%endif
#if defined(YYLTYPE) || defined(YYLTYPE_IS_DECLARED)
   YYLTYPE  yyerror_loc_range[3]; /* position of error start/end (0 unused) */
#endif
#if YYDEBUG
   const char *yys;

   if ((yys = getenv("YYDEBUG")) != 0)
   {
       yyn = *yys;
       if (yyn >= '0' && yyn <= '9')
           yydebug = yyn - '0';
   }
   if (yydebug)
       fprintf(stderr, "%sdebug[<# of symbols on state stack>]\n", YYPREFIX);
#endif
#if defined(YYLTYPE) || defined(YYLTYPE_IS_DECLARED)
   memset(yyerror_loc_range, 0, sizeof(yyerror_loc_range));
#endif

%% init_vars
   yyerrflag = 0;
   yychar = 0;
   memset(&yyval,  0, sizeof(yyval));
   memset(&yylval, 0, sizeof(yylval));
#if defined(YYLTYPE) || defined(YYLTYPE_IS_DECLARED)
   memset(&yyloc,  0, sizeof(yyloc));
   memset(&yylloc, 0, sizeof(yylloc));
#endif

%% body_3
%%ifdef YYBTYACC
   yyps = yyNewState(0); if (yyps == 0) goto yyenomem;
   yyps->save = 0;
%%endif
   yym = 0;
   /* yyn is set below */
   yynerrs = 0;
   yyerrflag = 0;
   yychar = YYEMPTY;
   yystate = 0;

#if YYPURE
   memset(&yystack, 0, sizeof(yystack));
#endif

   if (yystack.s_base == NULL && yygrowstack(&yystack) == YYENOMEM) goto yyoverflow;
   yystack.s_mark = yystack.s_base;
   yystack.l_mark = yystack.l_base;
#if defined(YYLTYPE) || defined(YYLTYPE_IS_DECLARED)
   yystack.p_mark = yystack.p_base;
#endif
   yystate = 0;
   *yystack.s_mark = 0;

yyloop:
   if ((yyn = yydefred[yystate]) != 0) goto yyreduce;
   if (yychar < 0)
   {
%%ifdef YYBTYACC
       do {
       if (yylvp < yylve)
       {
           /* we're currently re-reading tokens */
           yylval = *yylvp++;
#if defined(YYLTYPE) || defined(YYLTYPE_IS_DECLARED)
           yylloc = *yylpp++;
#endif
           yychar = *yylexp++;
           break;
       }
       if (yyps->save)
       {
           /* in trial mode; save scanner results for future parse attempts */
           if (yylvp == yylvlim)
           {   /* Enlarge lexical value queue */
               size_t p = (size_t) (yylvp - yylvals);
               size_t s = (size_t) (yylvlim - yylvals);

               s += YYLVQUEUEGROWTH;
               if ((yylexemes = (YYINT *)realloc(yylexemes, s * sizeof(YYINT))) == NULL) goto yyenomem;
               if ((yylvals   = (YYSTYPE *)realloc(yylvals, s * sizeof(YYSTYPE))) == NULL) goto yyenomem;
#if defined(YYLTYPE) || defined(YYLTYPE_IS_DECLARED)
               if ((yylpsns   = (YYLTYPE *)realloc(yylpsns, s * sizeof(YYLTYPE))) == NULL) goto yyenomem;
#endif
               yylvp   = yylve = yylvals + p;
               yylvlim = yylvals + s;
#if defined(YYLTYPE) || defined(YYLTYPE_IS_DECLARED)
               yylpp   = yylpe = yylpsns + p;
               yylplim = yylpsns + s;
#endif
               yylexp  = yylexemes + p;
           }
           *yylexp = (YYINT) YYLEX;
           *yylvp++ = yylval;
           yylve++;
#if defined(YYLTYPE) || defined(YYLTYPE_IS_DECLARED)
           *yylpp++ = yylloc;
           yylpe++;
#endif
           yychar = *yylexp++;
           break;
       }
       /* normal operation, no conflict encountered */
%%endif YYBTYACC
       yychar = YYLEX;
%%ifdef YYBTYACC
       } while (0);
%%endif
       if (yychar < 0) yychar = YYEOF;
#if YYDEBUG
       if (yydebug)
       {
           if ((yys = yyname[YYTRANSLATE(yychar)]) == NULL) yys = yyname[YYUNDFTOKEN];
           fprintf(stderr, "%s[%d]: state %d, reading token %d (%s)",
                           YYDEBUGSTR, yydepth, yystate, yychar, yys);
#ifdef YYSTYPE_TOSTRING
%%ifdef YYBTYACC
           if (!yytrial)
%%endif
               fprintf(stderr, " <%s>", YYSTYPE_TOSTRING(yychar, yylval));
#endif
           fputc('\n', stderr);
       }
#endif
   }
%%ifdef YYBTYACC

   /* Do we have a conflict? */
   if (((yyn = yycindex[yystate]) != 0) && (yyn += yychar) >= 0 &&
       yyn <= YYTABLESIZE && yycheck[yyn] == (YYINT) yychar)
   {
       YYINT ctry;

       if (yypath)
       {
           YYParseState *save;
#if YYDEBUG
           if (yydebug)
               fprintf(stderr, "%s[%d]: CONFLICT in state %d: following successful trial parse\n",
                               YYDEBUGSTR, yydepth, yystate);
#endif
           /* Switch to the next conflict context */
           save = yypath;
           yypath = save->save;
           save->save = NULL;
           ctry = save->ctry;
           if (save->state != yystate) YYABORT;
           yyFreeState(save);

       }
       else
       {

           /* Unresolved conflict - start/continue trial parse */
           YYParseState *save;
#if YYDEBUG
           if (yydebug)
           {
               fprintf(stderr, "%s[%d]: CONFLICT in state %d. ", YYDEBUGSTR, yydepth, yystate);
               if (yyps->save)
                   fputs("ALREADY in conflict, continuing trial parse.\n", stderr);
               else
                   fputs("Starting trial parse.\n", stderr);
           }
#endif
           save                  = yyNewState((unsigned)(yystack.s_mark - yystack.s_base + 1));
           if (save == NULL) goto yyenomem;
           save->save            = yyps->save;
           save->state           = yystate;
           save->errflag         = yyerrflag;
           save->yystack.s_mark  = save->yystack.s_base + (yystack.s_mark - yystack.s_base);
           memcpy (save->yystack.s_base, yystack.s_base, (size_t) (yystack.s_mark - yystack.s_base + 1) * sizeof(YYINT));
           save->yystack.l_mark  = save->yystack.l_base + (yystack.l_mark - yystack.l_base);
           memcpy (save->yystack.l_base, yystack.l_base, (size_t) (yystack.l_mark - yystack.l_base + 1) * sizeof(YYSTYPE));
#if defined(YYLTYPE) || defined(YYLTYPE_IS_DECLARED)
           save->yystack.p_mark  = save->yystack.p_base + (yystack.p_mark - yystack.p_base);
           memcpy (save->yystack.p_base, yystack.p_base, (size_t) (yystack.p_mark - yystack.p_base + 1) * sizeof(YYLTYPE));
#endif
           ctry                  = yytable[yyn];
           if (yyctable[ctry] == -1)
           {
#if YYDEBUG
               if (yydebug && yychar >= YYEOF)
                   fprintf(stderr, "%s[%d]: backtracking 1 token\n", YYDEBUGSTR, yydepth);
#endif
               ctry++;
           }
           save->ctry = ctry;
           if (yyps->save == NULL)
           {
               /* If this is a first conflict in the stack, start saving lexemes */
               if (!yylexemes)
               {
                   yylexemes = (YYINT *) malloc((YYLVQUEUEGROWTH) * sizeof(YYINT));
                   if (yylexemes == NULL) goto yyenomem;
                   yylvals   = (YYSTYPE *) malloc((YYLVQUEUEGROWTH) * sizeof(YYSTYPE));
                   if (yylvals == NULL) goto yyenomem;
                   yylvlim   = yylvals + YYLVQUEUEGROWTH;
#if defined(YYLTYPE) || defined(YYLTYPE_IS_DECLARED)
                   yylpsns   = (YYLTYPE *) malloc((YYLVQUEUEGROWTH) * sizeof(YYLTYPE));
                   if (yylpsns == NULL) goto yyenomem;
                   yylplim   = yylpsns + YYLVQUEUEGROWTH;
#endif
               }
               if (yylvp == yylve)
               {
                   yylvp  = yylve = yylvals;
#if defined(YYLTYPE) || defined(YYLTYPE_IS_DECLARED)
                   yylpp  = yylpe = yylpsns;
#endif
                   yylexp = yylexemes;
                   if (yychar >= YYEOF)
                   {
                       *yylve++ = yylval;
#if defined(YYLTYPE) || defined(YYLTYPE_IS_DECLARED)
                       *yylpe++ = yylloc;
#endif
                       *yylexp  = (YYINT) yychar;
                       yychar   = YYEMPTY;
                   }
               }
           }
           if (yychar >= YYEOF)
           {
               yylvp--;
#if defined(YYLTYPE) || defined(YYLTYPE_IS_DECLARED)
               yylpp--;
#endif
               yylexp--;
               yychar = YYEMPTY;
           }
           save->lexeme = (int) (yylvp - yylvals);
           yyps->save   = save;
       }
       if (yytable[yyn] == ctry)
       {
#if YYDEBUG
           if (yydebug)
               fprintf(stderr, "%s[%d]: state %d, shifting to state %d\n",
                               YYDEBUGSTR, yydepth, yystate, yyctable[ctry]);
#endif
           if (yychar < 0)
           {
               yylvp++;
#if defined(YYLTYPE) || defined(YYLTYPE_IS_DECLARED)
               yylpp++;
#endif
               yylexp++;
           }
           if (yystack.s_mark >= yystack.s_last && yygrowstack(&yystack) == YYENOMEM)
               goto yyoverflow;
           yystate = yyctable[ctry];
           *++yystack.s_mark = (YYINT) yystate;
           *++yystack.l_mark = yylval;
#if defined(YYLTYPE) || defined(YYLTYPE_IS_DECLARED)
           *++yystack.p_mark = yylloc;
#endif
           yychar  = YYEMPTY;
           if (yyerrflag > 0) --yyerrflag;
           goto yyloop;
       }
       else
       {
           yyn = yyctable[ctry];
           goto yyreduce;
       }
   } /* End of code dealing with conflicts */
%%endif YYBTYACC
   if (((yyn = yysindex[yystate]) != 0) && (yyn += yychar) >= 0 &&
           yyn <= YYTABLESIZE && yycheck[yyn] == (YYINT) yychar)
   {
#if YYDEBUG
       if (yydebug)
           fprintf(stderr, "%s[%d]: state %d, shifting to state %d\n",
                           YYDEBUGSTR, yydepth, yystate, yytable[yyn]);
#endif
       if (yystack.s_mark >= yystack.s_last && yygrowstack(&yystack) == YYENOMEM) goto yyoverflow;
       yystate = yytable[yyn];
       *++yystack.s_mark = yytable[yyn];
       *++yystack.l_mark = yylval;
#if defined(YYLTYPE) || defined(YYLTYPE_IS_DECLARED)
       *++yystack.p_mark = yylloc;
#endif
       yychar = YYEMPTY;
       if (yyerrflag > 0)  --yyerrflag;
       goto yyloop;
   }
   if (((yyn = yyrindex[yystate]) != 0) && (yyn += yychar) >= 0 &&
           yyn <= YYTABLESIZE && yycheck[yyn] == (YYINT) yychar)
   {
       yyn = yytable[yyn];
       goto yyreduce;
   }
   if (yyerrflag != 0) goto yyinrecovery;
%%ifdef YYBTYACC

   yynewerrflag = 1;
   goto yyerrhandler;
   goto yyerrlab; /* redundant goto avoids 'unused label' warning */

yyerrlab:
   /* explicit YYERROR from an action -- pop the rhs of the rule reduced
    * before looking for error recovery */
   yystack.s_mark -= yym;
   yystate = *yystack.s_mark;
   yystack.l_mark -= yym;
#if defined(YYLTYPE) || defined(YYLTYPE_IS_DECLARED)
   yystack.p_mark -= yym;
#endif

   yynewerrflag = 0;
yyerrhandler:
   while (yyps->save)
   {
       int ctry;
       YYParseState *save = yyps->save;
#if YYDEBUG
       if (yydebug)
           fprintf(stderr, "%s[%d]: ERROR in state %d, CONFLICT BACKTRACKING to state %d, %d tokens\n",
                           YYDEBUGSTR, yydepth, yystate, yyps->save->state,
                   (int)(yylvp - yylvals - yyps->save->lexeme));
#endif
       /* Memorize most forward-looking error state in case it's really an error. */
       if (yyerrctx == NULL || yyerrctx->lexeme < yylvp - yylvals)
       {
           /* Free old saved error context state */
           if (yyerrctx) yyFreeState(yyerrctx);
           /* Create and fill out new saved error context state */
           yyerrctx                 = yyNewState((unsigned)(yystack.s_mark - yystack.s_base + 1));
           if (yyerrctx == NULL) goto yyenomem;
           yyerrctx->save           = yyps->save;
           yyerrctx->state          = yystate;
           yyerrctx->errflag        = yyerrflag;
           yyerrctx->yystack.s_mark = yyerrctx->yystack.s_base + (yystack.s_mark - yystack.s_base);
           memcpy (yyerrctx->yystack.s_base, yystack.s_base, (size_t) (yystack.s_mark - yystack.s_base + 1) * sizeof(YYINT));
           yyerrctx->yystack.l_mark = yyerrctx->yystack.l_base + (yystack.l_mark - yystack.l_base);
           memcpy (yyerrctx->yystack.l_base, yystack.l_base, (size_t) (yystack.l_mark - yystack.l_base + 1) * sizeof(YYSTYPE));
#if defined(YYLTYPE) || defined(YYLTYPE_IS_DECLARED)
           yyerrctx->yystack.p_mark = yyerrctx->yystack.p_base + (yystack.p_mark - yystack.p_base);
           memcpy (yyerrctx->yystack.p_base, yystack.p_base, (size_t) (yystack.p_mark - yystack.p_base + 1) * sizeof(YYLTYPE));
#endif
           yyerrctx->lexeme         = (int) (yylvp - yylvals);
       }
       yylvp          = yylvals   + save->lexeme;
#if defined(YYLTYPE) || defined(YYLTYPE_IS_DECLARED)
       yylpp          = yylpsns   + save->lexeme;
#endif
       yylexp         = yylexemes + save->lexeme;
       yychar         = YYEMPTY;
       yystack.s_mark = yystack.s_base + (save->yystack.s_mark - save->yystack.s_base);
       memcpy (yystack.s_base, save->yystack.s_base, (size_t) (yystack.s_mark - yystack.s_base + 1) * sizeof(YYINT));
       yystack.l_mark = yystack.l_base + (save->yystack.l_mark - save->yystack.l_base);
       memcpy (yystack.l_base, save->yystack.l_base, (size_t) (yystack.l_mark - yystack.l_base + 1) * sizeof(YYSTYPE));
#if defined(YYLTYPE) || defined(YYLTYPE_IS_DECLARED)
       yystack.p_mark = yystack.p_base + (save->yystack.p_mark - save->yystack.p_base);
       memcpy (yystack.p_base, save->yystack.p_base, (size_t) (yystack.p_mark - yystack.p_base + 1) * sizeof(YYLTYPE));
#endif
       ctry           = ++save->ctry;
       yystate        = save->state;
       /* We tried shift, try reduce now */
       if ((yyn = yyctable[ctry]) >= 0) goto yyreduce;
       yyps->save     = save->save;
       save->save     = NULL;
       yyFreeState(save);

       /* Nothing left on the stack -- error */
       if (!yyps->save)
       {
#if YYDEBUG
           if (yydebug)
               fprintf(stderr, "%sdebug[%d,trial]: trial parse FAILED, entering ERROR mode\n",
                               YYPREFIX, yydepth);
#endif
           /* Restore state as it was in the most forward-advanced error */
           yylvp          = yylvals   + yyerrctx->lexeme;
#if defined(YYLTYPE) || defined(YYLTYPE_IS_DECLARED)
           yylpp          = yylpsns   + yyerrctx->lexeme;
#endif
           yylexp         = yylexemes + yyerrctx->lexeme;
           yychar         = yylexp[-1];
           yylval         = yylvp[-1];
#if defined(YYLTYPE) || defined(YYLTYPE_IS_DECLARED)
           yylloc         = yylpp[-1];
#endif
           yystack.s_mark = yystack.s_base + (yyerrctx->yystack.s_mark - yyerrctx->yystack.s_base);
           memcpy (yystack.s_base, yyerrctx->yystack.s_base, (size_t) (yystack.s_mark - yystack.s_base + 1) * sizeof(YYINT));
           yystack.l_mark = yystack.l_base + (yyerrctx->yystack.l_mark - yyerrctx->yystack.l_base);
           memcpy (yystack.l_base, yyerrctx->yystack.l_base, (size_t) (yystack.l_mark - yystack.l_base + 1) * sizeof(YYSTYPE));
#if defined(YYLTYPE) || defined(YYLTYPE_IS_DECLARED)
           yystack.p_mark = yystack.p_base + (yyerrctx->yystack.p_mark - yyerrctx->yystack.p_base);
           memcpy (yystack.p_base, yyerrctx->yystack.p_base, (size_t) (yystack.p_mark - yystack.p_base + 1) * sizeof(YYLTYPE));
#endif
           yystate        = yyerrctx->state;
           yyFreeState(yyerrctx);
           yyerrctx       = NULL;
       }
       yynewerrflag = 1;
   }
   if (yynewerrflag == 0) goto yyinrecovery;
%%endif YYBTYACC

   YYERROR_CALL("syntax error");
#if defined(YYLTYPE) || defined(YYLTYPE_IS_DECLARED)
   yyerror_loc_range[1] = yylloc; /* lookahead position is error start position */
#endif

#if !YYBTYACC
   goto yyerrlab; /* redundant goto avoids 'unused label' warning */
yyerrlab:
#endif
   ++yynerrs;

yyinrecovery:
   if (yyerrflag < 3)
   {
       yyerrflag = 3;
       for (;;)
       {
           if (((yyn = yysindex[*yystack.s_mark]) != 0) && (yyn += YYERRCODE) >= 0 &&
                   yyn <= YYTABLESIZE && yycheck[yyn] == (YYINT) YYERRCODE)
           {
#if YYDEBUG
               if (yydebug)
                   fprintf(stderr, "%s[%d]: state %d, error recovery shifting to state %d\n",
                                   YYDEBUGSTR, yydepth, *yystack.s_mark, yytable[yyn]);
#endif
               if (yystack.s_mark >= yystack.s_last && yygrowstack(&yystack) == YYENOMEM) goto yyoverflow;
               yystate = yytable[yyn];
               *++yystack.s_mark = yytable[yyn];
               *++yystack.l_mark = yylval;
#if defined(YYLTYPE) || defined(YYLTYPE_IS_DECLARED)
               /* lookahead position is error end position */
               yyerror_loc_range[2] = yylloc;
               YYLLOC_DEFAULT(yyloc, yyerror_loc_range, 2); /* position of error span */
               *++yystack.p_mark = yyloc;
#endif
               goto yyloop;
           }
           else
           {
#if YYDEBUG
               if (yydebug)
                   fprintf(stderr, "%s[%d]: error recovery discarding state %d\n",
                                   YYDEBUGSTR, yydepth, *yystack.s_mark);
#endif
               if (yystack.s_mark <= yystack.s_base) goto yyabort;
#if defined(YYLTYPE) || defined(YYLTYPE_IS_DECLARED)
               /* the current TOS position is the error start position */
               yyerror_loc_range[1] = *yystack.p_mark;
#endif
#if defined(YYDESTRUCT_CALL)
%%ifdef YYBTYACC
               if (!yytrial)
%%endif
#if defined(YYLTYPE) || defined(YYLTYPE_IS_DECLARED)
                   YYDESTRUCT_CALL("error: discarding state",
                                   yystos[*yystack.s_mark], yystack.l_mark, yystack.p_mark);
#else
                   YYDESTRUCT_CALL("error: discarding state",
                                   yystos[*yystack.s_mark], yystack.l_mark);
#endif /* defined(YYLTYPE) || defined(YYLTYPE_IS_DECLARED) */
#endif /* defined(YYDESTRUCT_CALL) */
               --yystack.s_mark;
               --yystack.l_mark;
#if defined(YYLTYPE) || defined(YYLTYPE_IS_DECLARED)
               --yystack.p_mark;
#endif
           }
       }
   }
   else
   {
       if (yychar == YYEOF) goto yyabort;
#if YYDEBUG
       if (yydebug)
       {
           if ((yys = yyname[YYTRANSLATE(yychar)]) == NULL) yys = yyname[YYUNDFTOKEN];
           fprintf(stderr, "%s[%d]: state %d, error recovery discarding token %d (%s)\n",
                           YYDEBUGSTR, yydepth, yystate, yychar, yys);
       }
#endif
#if defined(YYDESTRUCT_CALL)
%%ifdef YYBTYACC
       if (!yytrial)
%%endif
#if defined(YYLTYPE) || defined(YYLTYPE_IS_DECLARED)
           YYDESTRUCT_CALL("error: discarding token", yychar, &yylval, &yylloc);
#else
           YYDESTRUCT_CALL("error: discarding token", yychar, &yylval);
#endif /* defined(YYLTYPE) || defined(YYLTYPE_IS_DECLARED) */
#endif /* defined(YYDESTRUCT_CALL) */
       yychar = YYEMPTY;
       goto yyloop;
   }

yyreduce:
   yym = yylen[yyn];
#if YYDEBUG
   if (yydebug)
   {
       fprintf(stderr, "%s[%d]: state %d, reducing by rule %d (%s)",
                       YYDEBUGSTR, yydepth, yystate, yyn, yyrule[yyn]);
#ifdef YYSTYPE_TOSTRING
%%ifdef YYBTYACC
       if (!yytrial)
%%endif
           if (yym > 0)
           {
               int i;
               fputc('<', stderr);
               for (i = yym; i > 0; i--)
               {
                   if (i != yym) fputs(", ", stderr);
                   fputs(YYSTYPE_TOSTRING(yystos[yystack.s_mark[1-i]],
                                          yystack.l_mark[1-i]), stderr);
               }
               fputc('>', stderr);
           }
#endif
       fputc('\n', stderr);
   }
#endif
   if (yym > 0)
       yyval = yystack.l_mark[1-yym];
   else
       memset(&yyval, 0, sizeof yyval);
#if defined(YYLTYPE) || defined(YYLTYPE_IS_DECLARED)

   /* Perform position reduction */
   memset(&yyloc, 0, sizeof(yyloc));
%%ifdef YYBTYACC
   if (!yytrial)
%%endif
   {
       YYLLOC_DEFAULT(yyloc, &yystack.p_mark[-yym], yym);
       /* just in case YYERROR is invoked within the action, save
          the start of the rhs as the error start position */
       yyerror_loc_range[1] = yystack.p_mark[1-yym];
   }
#endif

   switch (yyn)
   {
%% trailer
   default:
       break;
   }
   yystack.s_mark -= yym;
   yystate = *yystack.s_mark;
   yystack.l_mark -= yym;
#if defined(YYLTYPE) || defined(YYLTYPE_IS_DECLARED)
   yystack.p_mark -= yym;
#endif
   yym = yylhs[yyn];
   if (yystate == 0 && yym == 0)
   {
#if YYDEBUG
       if (yydebug)
       {
           fprintf(stderr, "%s[%d]: after reduction, ", YYDEBUGSTR, yydepth);
#ifdef YYSTYPE_TOSTRING
%%ifdef YYBTYACC
           if (!yytrial)
%%endif
               fprintf(stderr, "result is <%s>, ", YYSTYPE_TOSTRING(yystos[YYFINAL], yyval));
#endif
           fprintf(stderr, "shifting from state 0 to final state %d\n", YYFINAL);
       }
#endif
       yystate = YYFINAL;
       *++yystack.s_mark = YYFINAL;
       *++yystack.l_mark = yyval;
#if defined(YYLTYPE) || defined(YYLTYPE_IS_DECLARED)
       *++yystack.p_mark = yyloc;
#endif
       if (yychar < 0)
       {
%%ifdef YYBTYACC
           do {
           if (yylvp < yylve)
           {
               /* we're currently re-reading tokens */
               yylval = *yylvp++;
#if defined(YYLTYPE) || defined(YYLTYPE_IS_DECLARED)
               yylloc = *yylpp++;
#endif
               yychar = *yylexp++;
               break;
           }
           if (yyps->save)
           {
               /* in trial mode; save scanner results for future parse attempts */
               if (yylvp == yylvlim)
               {   /* Enlarge lexical value queue */
                   size_t p = (size_t) (yylvp - yylvals);
                   size_t s = (size_t) (yylvlim - yylvals);

                   s += YYLVQUEUEGROWTH;
                   if ((yylexemes = (YYINT *)realloc(yylexemes, s * sizeof(YYINT))) == NULL)
                       goto yyenomem;
                   if ((yylvals   = (YYSTYPE *)realloc(yylvals, s * sizeof(YYSTYPE))) == NULL)
                       goto yyenomem;
#if defined(YYLTYPE) || defined(YYLTYPE_IS_DECLARED)
                   if ((yylpsns   = (YYLTYPE *)realloc(yylpsns, s * sizeof(YYLTYPE))) == NULL)
                       goto yyenomem;
#endif
                   yylvp   = yylve = yylvals + p;
                   yylvlim = yylvals + s;
#if defined(YYLTYPE) || defined(YYLTYPE_IS_DECLARED)
                   yylpp   = yylpe = yylpsns + p;
                   yylplim = yylpsns + s;
#endif
                   yylexp  = yylexemes + p;
               }
               *yylexp = (YYINT) YYLEX;
               *yylvp++ = yylval;
               yylve++;
#if defined(YYLTYPE) || defined(YYLTYPE_IS_DECLARED)
               *yylpp++ = yylloc;
               yylpe++;
#endif
               yychar = *yylexp++;
               break;
           }
           /* normal operation, no conflict encountered */
%%endif YYBTYACC
           yychar = YYLEX;
%%ifdef YYBTYACC
           } while (0);
%%endif
           if (yychar < 0) yychar = YYEOF;
#if YYDEBUG
           if (yydebug)
           {
               if ((yys = yyname[YYTRANSLATE(yychar)]) == NULL) yys = yyname[YYUNDFTOKEN];
               fprintf(stderr, "%s[%d]: state %d, reading token %d (%s)\n",
                               YYDEBUGSTR, yydepth, YYFINAL, yychar, yys);
           }
#endif
       }
       if (yychar == YYEOF) goto yyaccept;
       goto yyloop;
   }
   if (((yyn = yygindex[yym]) != 0) && (yyn += yystate) >= 0 &&
           yyn <= YYTABLESIZE && yycheck[yyn] == (YYINT) yystate)
       yystate = yytable[yyn];
   else
       yystate = yydgoto[yym];
#if YYDEBUG
   if (yydebug)
   {
       fprintf(stderr, "%s[%d]: after reduction, ", YYDEBUGSTR, yydepth);
#ifdef YYSTYPE_TOSTRING
%%ifdef YYBTYACC
       if (!yytrial)
%%endif
           fprintf(stderr, "result is <%s>, ", YYSTYPE_TOSTRING(yystos[yystate], yyval));
#endif
       fprintf(stderr, "shifting from state %d to state %d\n", *yystack.s_mark, yystate);
   }
#endif
   if (yystack.s_mark >= yystack.s_last && yygrowstack(&yystack) == YYENOMEM) goto yyoverflow;
   *++yystack.s_mark = (YYINT) yystate;
   *++yystack.l_mark = yyval;
#if defined(YYLTYPE) || defined(YYLTYPE_IS_DECLARED)
   *++yystack.p_mark = yyloc;
#endif
   goto yyloop;
%%ifdef YYBTYACC

   /* Reduction declares that this path is valid. Set yypath and do a full parse */
yyvalid:
   if (yypath) YYABORT;
   while (yyps->save)
   {
       YYParseState *save = yyps->save;
       yyps->save = save->save;
       save->save = yypath;
       yypath = save;
   }
#if YYDEBUG
   if (yydebug)
       fprintf(stderr, "%s[%d]: state %d, CONFLICT trial successful, backtracking to state %d, %d tokens\n",
                       YYDEBUGSTR, yydepth, yystate, yypath->state, (int)(yylvp - yylvals - yypath->lexeme));
#endif
   if (yyerrctx)
   {
       yyFreeState(yyerrctx);
       yyerrctx = NULL;
   }
   yylvp          = yylvals + yypath->lexeme;
#if defined(YYLTYPE) || defined(YYLTYPE_IS_DECLARED)
   yylpp          = yylpsns + yypath->lexeme;
#endif
   yylexp         = yylexemes + yypath->lexeme;
   yychar         = YYEMPTY;
   yystack.s_mark = yystack.s_base + (yypath->yystack.s_mark - yypath->yystack.s_base);
   memcpy (yystack.s_base, yypath->yystack.s_base, (size_t) (yystack.s_mark - yystack.s_base + 1) * sizeof(YYINT));
   yystack.l_mark = yystack.l_base + (yypath->yystack.l_mark - yypath->yystack.l_base);
   memcpy (yystack.l_base, yypath->yystack.l_base, (size_t) (yystack.l_mark - yystack.l_base + 1) * sizeof(YYSTYPE));
#if defined(YYLTYPE) || defined(YYLTYPE_IS_DECLARED)
   yystack.p_mark = yystack.p_base + (yypath->yystack.p_mark - yypath->yystack.p_base);
   memcpy (yystack.p_base, yypath->yystack.p_base, (size_t) (yystack.p_mark - yystack.p_base + 1) * sizeof(YYLTYPE));
#endif
   yystate        = yypath->state;
   goto yyloop;
%%endif YYBTYACC

yyoverflow:
   YYERROR_CALL("yacc stack overflow");
%%ifdef YYBTYACC
   goto yyabort_nomem;
yyenomem:
   YYERROR_CALL("memory exhausted");
yyabort_nomem:
%%endif
   yyresult = 2;
   goto yyreturn;

yyabort:
   yyresult = 1;
   goto yyreturn;

yyaccept:
%%ifdef YYBTYACC
   if (yyps->save) goto yyvalid;
%%endif
   yyresult = 0;

yyreturn:
#if defined(YYDESTRUCT_CALL)
   if (yychar != YYEOF && yychar != YYEMPTY)
#if defined(YYLTYPE) || defined(YYLTYPE_IS_DECLARED)
       YYDESTRUCT_CALL("cleanup: discarding token", yychar, &yylval, &yylloc);
#else
       YYDESTRUCT_CALL("cleanup: discarding token", yychar, &yylval);
#endif /* defined(YYLTYPE) || defined(YYLTYPE_IS_DECLARED) */

   {
       YYSTYPE *pv;
#if defined(YYLTYPE) || defined(YYLTYPE_IS_DECLARED)
       YYLTYPE *pp;

       for (pv = yystack.l_base, pp = yystack.p_base; pv <= yystack.l_mark; ++pv, ++pp)
            YYDESTRUCT_CALL("cleanup: discarding state",
                            yystos[*(yystack.s_base + (pv - yystack.l_base))], pv, pp);
#else
       for (pv = yystack.l_base; pv <= yystack.l_mark; ++pv)
            YYDESTRUCT_CALL("cleanup: discarding state",
                            yystos[*(yystack.s_base + (pv - yystack.l_base))], pv);
#endif /* defined(YYLTYPE) || defined(YYLTYPE_IS_DECLARED) */
   }
#endif /* defined(YYDESTRUCT_CALL) */

%%ifdef YYBTYACC
   if (yyerrctx)
   {
       yyFreeState(yyerrctx);
       yyerrctx = NULL;
   }
   while (yyps)
   {
       YYParseState *save = yyps;
       yyps = save->save;
       save->save = NULL;
       yyFreeState(save);
   }
   while (yypath)
   {
       YYParseState *save = yypath;
       yypath = save->save;
       save->save = NULL;
       yyFreeState(save);
   }
%%endif YYBTYACC
   yyfreestack(&yystack);
   return (yyresult);
}