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dgn_yacc.c

#ifndef lint
static char yysccsid[] = "@(#)yaccpar     1.9 (Berkeley) 02/21/93";
#endif
#define YYBYACC 1
#define YYMAJOR 1
#define YYMINOR 9
#define yyclearin (yychar=(-1))
#define yyerrok (yyerrflag=0)
#define YYRECOVERING (yyerrflag!=0)
#define YYPREFIX "yy"
/*    SCCS Id: @(#)dgn_comp.c 3.3   96/06/22    */
/*    Copyright (c) 1989 by Jean-Christophe Collet */
/*    Copyright (c) 1990 by M. Stephenson                     */
/* NetHack may be freely redistributed.  See license for details. */

/*
 * This file contains the Dungeon Compiler code
 */

/* In case we're using bison in AIX.  This definition must be
 * placed before any other C-language construct in the file
 * excluding comments and preprocessor directives (thanks IBM
 * for this wonderful feature...).
 *
 * Note: some cpps barf on this 'undefined control' (#pragma).
 * Addition of the leading space seems to prevent barfage for now,
 * and AIX will still see the directive in its non-standard locale.
 */

#ifdef _AIX
 #pragma alloca         /* keep leading space! */
#endif

#include "config.h"
#include "date.h"
#include "dgn_file.h"

void FDECL(yyerror, (const char *));
void FDECL(yywarning, (const char *));
int NDECL(yylex);
int NDECL(yyparse);
int FDECL(getchain, (char *));
int NDECL(check_dungeon);
int NDECL(check_branch);
int NDECL(check_level);
void NDECL(init_dungeon);
void NDECL(init_branch);
void NDECL(init_level);
void NDECL(output_dgn);

#define Free(ptr)       free((genericptr_t)ptr)

#ifdef AMIGA
# undef     printf
#ifndef     LATTICE
# define    memset(addr,val,len)    setmem(addr,len,val)
#endif
#endif

#define ERR       (-1)

static struct couple couple;
static struct tmpdungeon tmpdungeon[MAXDUNGEON];
static struct tmplevel tmplevel[LEV_LIMIT];
static struct tmpbranch tmpbranch[BRANCH_LIMIT];

static int in_dungeon = 0, n_dgns = -1, n_levs = -1, n_brs = -1;

extern int fatal_error;
extern const char *fname;
extern FILE *yyin, *yyout;    /* from dgn_lex.c */

typedef union
{
      int   i;
      char* str;
} YYSTYPE;
#define INTEGER 257
#define A_DUNGEON 258
#define BRANCH 259
#define CHBRANCH 260
#define LEVEL 261
#define RNDLEVEL 262
#define CHLEVEL 263
#define RNDCHLEVEL 264
#define UP_OR_DOWN 265
#define PROTOFILE 266
#define DESCRIPTION 267
#define DESCRIPTOR 268
#define LEVELDESC 269
#define ALIGNMENT 270
#define LEVALIGN 271
#define ENTRY 272
#define STAIR 273
#define NO_UP 274
#define NO_DOWN 275
#define PORTAL 276
#define STRING 277
#define YYERRCODE 256
short yylhs[] = {                                        -1,
    0,    0,    5,    5,    6,    6,    6,    6,    7,    1,
    1,    8,    8,    8,   12,   13,   15,   15,   14,   10,
   10,   10,   10,   10,   16,   16,   17,   17,   18,   18,
   19,   19,   20,   20,    9,    9,   22,   23,    3,    3,
    3,    3,    3,    2,    2,    4,   21,   11,
};
short yylen[] = {                                         2,
    0,    1,    1,    2,    1,    1,    1,    1,    6,    0,
    1,    1,    1,    1,    3,    1,    3,    3,    3,    1,
    1,    1,    1,    1,    6,    7,    7,    8,    3,    3,
    7,    8,    8,    9,    1,    1,    7,    8,    0,    1,
    1,    1,    1,    0,    1,    1,    5,    5,
};
short yydefred[] = {                                      0,
    0,    0,    0,    0,    0,    0,    0,    0,    0,    0,
    0,    0,    0,    0,    0,    3,    5,    6,    7,    8,
   12,   13,   14,   16,   20,   21,   22,   23,   24,   35,
   36,    0,    0,    0,    0,    0,    0,    0,    0,    0,
    0,    0,    0,    0,    4,    0,    0,    0,    0,    0,
    0,    0,   19,   17,   29,   18,   30,   15,   46,    0,
    0,    0,    0,    0,    0,    0,    0,    0,    0,    0,
    0,    0,    0,    0,    0,    0,   11,    9,    0,   40,
   41,   42,   43,    0,    0,    0,    0,    0,    0,    0,
    0,   45,   37,    0,   27,    0,    0,    0,    0,    0,
   38,   28,   33,    0,   48,   47,   34,
};
short yydgoto[] = {                                      14,
   78,   93,   84,   60,   15,   16,   17,   18,   19,   20,
   68,   21,   22,   23,   24,   25,   26,   27,   28,   29,
   70,   30,   31,
};
short yysindex[] = {                                   -237,
  -46,  -45,  -44,  -39,  -38,  -30,  -22,  -21,  -20,  -19,
  -18,  -17,  -16,    0, -237,    0,    0,    0,    0,    0,
    0,    0,    0,    0,    0,    0,    0,    0,    0,    0,
    0, -262, -234, -233, -232, -230, -229, -228, -227, -217,
 -216, -215, -214, -202,    0, -221,   -7, -219, -221, -221,
 -221, -221,    0,    0,    0,    0,    0,    0,    0,   19,
   20,   21,   -2,   -1, -212, -211, -190, -189, -188, -271,
   19,   20,   20,   27,   28,   29,    0,    0,   30,    0,
    0,    0,    0, -193, -271, -182, -180,   19,   19, -179,
 -178,    0,    0, -193,    0, -177, -176, -175,   42,   43,
    0,    0,    0, -172,    0,    0,    0,
};
short yyrindex[] = {                                     86,
    0,    0,    0,    0,    0,    0,    0,    0,    0,    0,
    0,    0,    0,    0,   87,    0,    0,    0,    0,    0,
    0,    0,    0,    0,    0,    0,    0,    0,    0,    0,
    0,    0,    0,    0,    0,    0,    0,    0,    0,    0,
    0,    0,    0,    0,    0,    0,    0,    0,    0,    0,
    0,    0,    0,    0,    0,    0,    0,    0,    0,    0,
    0,    0,    0,    0,    0,    0,    0,   16,    0,    1,
    0,    0,    0,    0,    0,    0,    0,    0,    0,    0,
    0,    0,    0,   31,    1,   46,    0,    0,    0,    0,
    0,    0,    0,   31,    0,   61,   76,    0,    0,    0,
    0,    0,    0,   91,    0,    0,    0,
};
short yygindex[] = {                                      0,
    0,   -6,    4,  -43,    0,   75,    0,    0,    0,    0,
  -71,    0,    0,    0,    0,    0,    0,    0,    0,    0,
  -62,    0,    0,
};
#define YYTABLESIZE 363
short yytable[] = {                                      85,
   39,   80,   81,   82,   83,   63,   64,   65,   66,   86,
   87,   32,   33,   34,   46,   10,   97,   98,   35,   36,
    1,    2,    3,    4,    5,    6,    7,   37,    8,    9,
   44,   10,   11,   12,   13,   38,   39,   40,   41,   42,
   43,   44,   47,   48,   49,   25,   50,   51,   52,   53,
   54,   55,   56,   57,   58,   59,   61,   62,   67,   69,
   26,   72,   73,   71,   74,   75,   76,   77,   79,   88,
   89,   92,   90,   91,   95,   31,   96,   99,  100,  102,
  103,  104,  105,  106,  107,    1,    2,  101,   94,   45,
   32,    0,    0,    0,    0,    0,    0,    0,    0,    0,
    0,    0,    0,    0,    0,    0,    0,    0,    0,    0,
    0,    0,    0,    0,    0,    0,    0,    0,    0,    0,
    0,    0,    0,    0,    0,    0,    0,    0,    0,    0,
    0,    0,    0,    0,    0,    0,    0,    0,    0,    0,
    0,    0,    0,    0,    0,    0,    0,    0,    0,    0,
    0,    0,    0,    0,    0,    0,    0,    0,    0,    0,
    0,    0,    0,    0,    0,    0,    0,    0,    0,    0,
    0,    0,    0,    0,    0,    0,    0,    0,    0,    0,
    0,    0,    0,    0,    0,    0,    0,    0,    0,    0,
    0,    0,    0,    0,    0,    0,    0,    0,    0,    0,
    0,    0,    0,    0,    0,    0,    0,    0,    0,    0,
    0,    0,    0,    0,    0,    0,    0,    0,    0,    0,
    0,    0,    0,    0,    0,    0,    0,    0,    0,    0,
    0,    0,    0,    0,    0,    0,    0,    0,    0,    0,
    0,    0,    0,    0,    0,    0,    0,    0,    0,    0,
    0,    0,    0,    0,    0,    0,    0,    0,   39,   39,
   39,   39,   39,   39,   39,   39,   39,   39,    0,   39,
   39,   39,   39,   10,   10,   10,   10,   10,   10,   10,
    0,   10,   10,    0,   10,   10,   10,   10,   44,   44,
   44,   44,   44,   44,   44,    0,   44,   44,    0,   44,
   44,   44,   44,   25,   25,   25,   25,   25,   25,   25,
    0,   25,   25,    0,   25,   25,   25,   25,   26,   26,
   26,   26,   26,   26,   26,    0,   26,   26,    0,   26,
   26,   26,   26,   31,   31,   31,   31,   31,   31,   31,
    0,   31,   31,    0,   31,   31,   31,   31,   32,   32,
   32,   32,   32,   32,   32,    0,   32,   32,    0,   32,
   32,   32,   32,
};
short yycheck[] = {                                      71,
    0,  273,  274,  275,  276,   49,   50,   51,   52,   72,
   73,   58,   58,   58,  277,    0,   88,   89,   58,   58,
  258,  259,  260,  261,  262,  263,  264,   58,  266,  267,
    0,  269,  270,  271,  272,   58,   58,   58,   58,   58,
   58,   58,  277,  277,  277,    0,  277,  277,  277,  277,
  268,  268,  268,  268,  257,  277,   64,  277,   40,   40,
    0,   64,   64,   43,  277,  277,  257,  257,  257,   43,
   43,  265,   44,   44,  257,    0,  257,  257,  257,  257,
  257,  257,   41,   41,  257,    0,    0,   94,   85,   15,
    0,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,  258,  259,
  260,  261,  262,  263,  264,  265,  266,  267,   -1,  269,
  270,  271,  272,  258,  259,  260,  261,  262,  263,  264,
   -1,  266,  267,   -1,  269,  270,  271,  272,  258,  259,
  260,  261,  262,  263,  264,   -1,  266,  267,   -1,  269,
  270,  271,  272,  258,  259,  260,  261,  262,  263,  264,
   -1,  266,  267,   -1,  269,  270,  271,  272,  258,  259,
  260,  261,  262,  263,  264,   -1,  266,  267,   -1,  269,
  270,  271,  272,  258,  259,  260,  261,  262,  263,  264,
   -1,  266,  267,   -1,  269,  270,  271,  272,  258,  259,
  260,  261,  262,  263,  264,   -1,  266,  267,   -1,  269,
  270,  271,  272,
};
#define YYFINAL 14
#ifndef YYDEBUG
#define YYDEBUG 0
#endif
#define YYMAXTOKEN 277
#if YYDEBUG
char *yyname[] = {
"end-of-file",0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
0,0,0,0,0,0,"'('","')'",0,"'+'","','",0,0,0,0,0,0,0,0,0,0,0,0,0,"':'",0,0,0,0,0,
"'@'",0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,"INTEGER",
"A_DUNGEON","BRANCH","CHBRANCH","LEVEL","RNDLEVEL","CHLEVEL","RNDCHLEVEL",
"UP_OR_DOWN","PROTOFILE","DESCRIPTION","DESCRIPTOR","LEVELDESC","ALIGNMENT",
"LEVALIGN","ENTRY","STAIR","NO_UP","NO_DOWN","PORTAL","STRING",
};
char *yyrule[] = {
"$accept : file",
"file :",
"file : dungeons",
"dungeons : dungeon",
"dungeons : dungeons dungeon",
"dungeon : dungeonline",
"dungeon : dungeondesc",
"dungeon : branches",
"dungeon : levels",
"dungeonline : A_DUNGEON ':' STRING bones_tag rcouple optional_int",
"optional_int :",
"optional_int : INTEGER",
"dungeondesc : entry",
"dungeondesc : descriptions",
"dungeondesc : prototype",
"entry : ENTRY ':' INTEGER",
"descriptions : desc",
"desc : DESCRIPTION ':' DESCRIPTOR",
"desc : ALIGNMENT ':' DESCRIPTOR",
"prototype : PROTOFILE ':' STRING",
"levels : level1",
"levels : level2",
"levels : levdesc",
"levels : chlevel1",
"levels : chlevel2",
"level1 : LEVEL ':' STRING bones_tag '@' acouple",
"level1 : RNDLEVEL ':' STRING bones_tag '@' acouple INTEGER",
"level2 : LEVEL ':' STRING bones_tag '@' acouple INTEGER",
"level2 : RNDLEVEL ':' STRING bones_tag '@' acouple INTEGER INTEGER",
"levdesc : LEVELDESC ':' DESCRIPTOR",
"levdesc : LEVALIGN ':' DESCRIPTOR",
"chlevel1 : CHLEVEL ':' STRING bones_tag STRING '+' rcouple",
"chlevel1 : RNDCHLEVEL ':' STRING bones_tag STRING '+' rcouple INTEGER",
"chlevel2 : CHLEVEL ':' STRING bones_tag STRING '+' rcouple INTEGER",
"chlevel2 : RNDCHLEVEL ':' STRING bones_tag STRING '+' rcouple INTEGER INTEGER",
"branches : branch",
"branches : chbranch",
"branch : BRANCH ':' STRING '@' acouple branch_type direction",
"chbranch : CHBRANCH ':' STRING STRING '+' rcouple branch_type direction",
"branch_type :",
"branch_type : STAIR",
"branch_type : NO_UP",
"branch_type : NO_DOWN",
"branch_type : PORTAL",
"direction :",
"direction : UP_OR_DOWN",
"bones_tag : STRING",
"acouple : '(' INTEGER ',' INTEGER ')'",
"rcouple : '(' INTEGER ',' INTEGER ')'",
};
#endif
#ifdef YYSTACKSIZE
#undef YYMAXDEPTH
#define YYMAXDEPTH YYSTACKSIZE
#else
#ifdef YYMAXDEPTH
#define YYSTACKSIZE YYMAXDEPTH
#else
#define YYSTACKSIZE 500
#define YYMAXDEPTH 500
#endif
#endif
int yydebug;
int yynerrs;
int yyerrflag;
int yychar;
short *yyssp;
YYSTYPE *yyvsp;
YYSTYPE yyval;
YYSTYPE yylval;
short yyss[YYSTACKSIZE];
YYSTYPE yyvs[YYSTACKSIZE];
#define yystacksize YYSTACKSIZE

void
init_dungeon()
{
      if(++n_dgns > MAXDUNGEON) {
          (void) fprintf(stderr, "FATAL - Too many dungeons (limit: %d).\n",
                MAXDUNGEON);
          (void) fprintf(stderr, "To increase the limit edit MAXDUNGEON in global.h\n");
          exit(EXIT_FAILURE);
      }

      in_dungeon = 1;
      tmpdungeon[n_dgns].lev.base = 0;
      tmpdungeon[n_dgns].lev.rand = 0;
      tmpdungeon[n_dgns].chance = 100;
      Strcpy(tmpdungeon[n_dgns].name, "");
      Strcpy(tmpdungeon[n_dgns].protoname, "");
      tmpdungeon[n_dgns].flags = 0;
      tmpdungeon[n_dgns].levels = 0;
      tmpdungeon[n_dgns].branches = 0;
      tmpdungeon[n_dgns].entry_lev = 0;
}

void
init_level()
{
      if(++n_levs > LEV_LIMIT) {

            yyerror("FATAL - Too many special levels defined.");
            exit(EXIT_FAILURE);
      }
      tmplevel[n_levs].lev.base = 0;
      tmplevel[n_levs].lev.rand = 0;
      tmplevel[n_levs].chance = 100;
      tmplevel[n_levs].rndlevs = 0;
      tmplevel[n_levs].flags = 0;
      Strcpy(tmplevel[n_levs].name, "");
      tmplevel[n_levs].chain = -1;
}

void
init_branch()
{
      if(++n_brs > BRANCH_LIMIT) {

            yyerror("FATAL - Too many special levels defined.");
            exit(EXIT_FAILURE);
      }
      tmpbranch[n_brs].lev.base = 0;
      tmpbranch[n_brs].lev.rand = 0;
      Strcpy(tmpbranch[n_brs].name, "");
      tmpbranch[n_brs].chain = -1;
}

int
getchain(s)
      char  *s;
{
      int i;

      if(strlen(s)) {

          for(i = n_levs - tmpdungeon[n_dgns].levels + 1; i <= n_levs; i++)
            if(!strcmp(tmplevel[i].name, s)) return i;

          yyerror("Can't locate the specified chain level.");
          return(-2);
      }
      return(-1);
}

/*
 *    Consistancy checking routines:
 *
 *    - A dungeon must have a unique name.
 *    - A dungeon must have a originating "branch" command
 *      (except, of course, for the first dungeon).
 *    - A dungeon must have a proper depth (at least (1, 0)).
 */

int
check_dungeon()
{
      int i;

      for(i = 0; i < n_dgns; i++)
          if(!strcmp(tmpdungeon[i].name, tmpdungeon[n_dgns].name)) {
            yyerror("Duplicate dungeon name.");
            return(0);
          }

      if(n_dgns)
        for(i = 0; i < n_brs - tmpdungeon[n_dgns].branches; i++) {
          if(!strcmp(tmpbranch[i].name, tmpdungeon[n_dgns].name)) break;

          if(i >= n_brs - tmpdungeon[n_dgns].branches) {
            yyerror("Dungeon cannot be reached.");
            return(0);
          }
        }

      if(tmpdungeon[n_dgns].lev.base <= 0 ||
         tmpdungeon[n_dgns].lev.rand < 0) {
            yyerror("Invalid dungeon depth specified.");
            return(0);
      }
      return(1);  /* OK */
}

/*
 *    - A level must have a unique level name.
 *    - If chained, the level used as reference for the chain
 *      must be in this dungeon, must be previously defined, and
 *      the level chained from must be "non-probabilistic" (ie.
 *      have a 100% chance of existing).
 */

int
check_level()
{
      int i;

      if(!in_dungeon) {
            yyerror("Level defined outside of dungeon.");
            return(0);
      }

      for(i = 0; i < n_levs; i++)
          if(!strcmp(tmplevel[i].name, tmplevel[n_levs].name)) {
            yyerror("Duplicate level name.");
            return(0);
          }

      if(tmplevel[i].chain == -2) {
            yyerror("Invaild level chain reference.");
            return(0);
      } else if(tmplevel[i].chain != -1) {      /* there is a chain */
          /* KMH -- tmplevel[tmpbranch[i].chain].chance was in error */
          if(tmplevel[tmplevel[i].chain].chance != 100) {
            yyerror("Level cannot chain from a probabilistic level.");
            return(0);
          } else if(tmplevel[i].chain == n_levs) {
            yyerror("A level cannot chain to itself!");
            return(0);
          }
      }
      return(1);  /* OK */
}

/*
 *    - A branch may not branch backwards - to avoid branch loops.
 *    - A branch name must be unique.
 *      (ie. You can only have one entry point to each dungeon).
 *    - If chained, the level used as reference for the chain
 *      must be in this dungeon, must be previously defined, and
 *      the level chained from must be "non-probabilistic" (ie.
 *      have a 100% chance of existing).
 */

int
check_branch()
{
      int i;

      if(!in_dungeon) {
            yyerror("Branch defined outside of dungeon.");
            return(0);
      }

      for(i = 0; i < n_dgns; i++)
          if(!strcmp(tmpdungeon[i].name, tmpbranch[n_brs].name)) {

            yyerror("Reverse branching not allowed.");
            return(0);
          }

      if(tmpbranch[i].chain == -2) {

            yyerror("Invaild branch chain reference.");
            return(0);
      } else if(tmpbranch[i].chain != -1) {     /* it is chained */

          if(tmplevel[tmpbranch[i].chain].chance != 100) {
            yyerror("Branch cannot chain from a probabilistic level.");
            return(0);
          }
      }
      return(1);  /* OK */
}

/*
 *    Output the dungon definition into a file.
 *
 *    The file will have the following format:
 *
 *    [ nethack version ID ]
 *    [ number of dungeons ]
 *    [ first dungeon struct ]
 *    [ levels for the first dungeon ]
 *      ...
 *    [ branches for the first dungeon ]
 *      ...
 *    [ second dungeon struct ]
 *      ...
 */

void
output_dgn()
{
      int   nd, cl = 0, nl = 0,
                cb = 0, nb = 0;
      static struct version_info version_data = {
                  VERSION_NUMBER, VERSION_FEATURES,
                  VERSION_SANITY1, VERSION_SANITY2
      };

      if(++n_dgns <= 0) {
          yyerror("FATAL - no dungeons were defined.");
          exit(EXIT_FAILURE);
      }

      if (fwrite((char *)&version_data, sizeof version_data, 1, yyout) != 1) {
          yyerror("FATAL - output failure.");
          exit(EXIT_FAILURE);
      }

      (void) fwrite((char *)&n_dgns, sizeof(int), 1, yyout);
      for (nd = 0; nd < n_dgns; nd++) {
          (void) fwrite((char *)&tmpdungeon[nd], sizeof(struct tmpdungeon),
                                          1, yyout);

          nl += tmpdungeon[nd].levels;
          for(; cl < nl; cl++)
            (void) fwrite((char *)&tmplevel[cl], sizeof(struct tmplevel),
                                          1, yyout);

          nb += tmpdungeon[nd].branches;
          for(; cb < nb; cb++)
            (void) fwrite((char *)&tmpbranch[cb], sizeof(struct tmpbranch),
                                          1, yyout);
      }
      /* apparently necessary for Think C 5.x, otherwise harmless */
      (void) fflush(yyout);
}

/*dgn_comp.y*/
#define YYABORT goto yyabort
#define YYREJECT goto yyabort
#define YYACCEPT goto yyaccept
#define YYERROR goto yyerrlab
int
yyparse()
{
    register int yym, yyn, yystate;
#if YYDEBUG
    register char *yys;
    extern char *getenv();

    if ((yys = getenv("YYDEBUG")) != 0)
    {
        yyn = *yys;
        if (yyn >= '0' && yyn <= '9')
            yydebug = yyn - '0';
    }
#endif

    yynerrs = 0;
    yyerrflag = 0;
    yychar = (-1);

    yyssp = yyss;
    yyvsp = yyvs;
    *yyssp = yystate = 0;

yyloop:
    if ((yyn = yydefred[yystate]) != 0) goto yyreduce;
    if (yychar < 0)
    {
        if ((yychar = yylex()) < 0) yychar = 0;
#if YYDEBUG
        if (yydebug)
        {
            yys = 0;
            if (yychar <= YYMAXTOKEN) yys = yyname[yychar];
            if (!yys) yys = "illegal-symbol";
            printf("%sdebug: state %d, reading %d (%s)\n",
                    YYPREFIX, yystate, yychar, yys);
        }
#endif
    }
    if ((yyn = yysindex[yystate]) != 0 && (yyn += yychar) >= 0 &&
            yyn <= YYTABLESIZE && yycheck[yyn] == yychar)
    {
#if YYDEBUG
        if (yydebug)
            printf("%sdebug: state %d, shifting to state %d\n",
                    YYPREFIX, yystate, yytable[yyn]);
#endif
        if (yyssp >= yyss + yystacksize - 1)
        {
            goto yyoverflow;
        }
        *++yyssp = yystate = yytable[yyn];
        *++yyvsp = yylval;
        yychar = (-1);
        if (yyerrflag > 0)  --yyerrflag;
        goto yyloop;
    }
    if ((yyn = yyrindex[yystate]) != 0 && (yyn += yychar) >= 0 &&
            yyn <= YYTABLESIZE && yycheck[yyn] == yychar)
    {
        yyn = yytable[yyn];
        goto yyreduce;
    }
    if (yyerrflag) goto yyinrecovery;
#ifdef lint
    goto yynewerror;
#endif
yynewerror:
    yyerror("syntax error");
#ifdef lint
    goto yyerrlab;
#endif
yyerrlab:
    ++yynerrs;
yyinrecovery:
    if (yyerrflag < 3)
    {
        yyerrflag = 3;
        for (;;)
        {
            if ((yyn = yysindex[*yyssp]) != 0 && (yyn += YYERRCODE) >= 0 &&
                    yyn <= YYTABLESIZE && yycheck[yyn] == YYERRCODE)
            {
#if YYDEBUG
                if (yydebug)
                    printf("%sdebug: state %d, error recovery shifting\
 to state %d\n", YYPREFIX, *yyssp, yytable[yyn]);
#endif
                if (yyssp >= yyss + yystacksize - 1)
                {
                    goto yyoverflow;
                }
                *++yyssp = yystate = yytable[yyn];
                *++yyvsp = yylval;
                goto yyloop;
            }
            else
            {
#if YYDEBUG
                if (yydebug)
                    printf("%sdebug: error recovery discarding state %d\n",
                            YYPREFIX, *yyssp);
#endif
                if (yyssp <= yyss) goto yyabort;
                --yyssp;
                --yyvsp;
            }
        }
    }
    else
    {
        if (yychar == 0) goto yyabort;
#if YYDEBUG
        if (yydebug)
        {
            yys = 0;
            if (yychar <= YYMAXTOKEN) yys = yyname[yychar];
            if (!yys) yys = "illegal-symbol";
            printf("%sdebug: state %d, error recovery discards token %d (%s)\n",
                    YYPREFIX, yystate, yychar, yys);
        }
#endif
        yychar = (-1);
        goto yyloop;
    }
yyreduce:
#if YYDEBUG
    if (yydebug)
        printf("%sdebug: state %d, reducing by rule %d (%s)\n",
                YYPREFIX, yystate, yyn, yyrule[yyn]);
#endif
    yym = yylen[yyn];
    yyval = yyvsp[1-yym];
    switch (yyn)
    {
case 2:
{
                  output_dgn();
              }
break;
case 9:
{
                  init_dungeon();
                  Strcpy(tmpdungeon[n_dgns].name, yyvsp[-3].str);
                  tmpdungeon[n_dgns].boneschar = (char)yyvsp[-2].i;
                  tmpdungeon[n_dgns].lev.base = couple.base;
                  tmpdungeon[n_dgns].lev.rand = couple.rand;
                  tmpdungeon[n_dgns].chance = yyvsp[0].i;
                  Free(yyvsp[-3].str);
              }
break;
case 10:
{
                  yyval.i = 0;
              }
break;
case 11:
{
                  yyval.i = yyvsp[0].i;
              }
break;
case 15:
{
                  tmpdungeon[n_dgns].entry_lev = yyvsp[0].i;
              }
break;
case 17:
{
                  if(yyvsp[0].i <= TOWN || yyvsp[0].i >= D_ALIGN_CHAOTIC)
                      yyerror("Illegal description - ignoring!");
                  else
                      tmpdungeon[n_dgns].flags |= yyvsp[0].i ;
              }
break;
case 18:
{
                  if(yyvsp[0].i && yyvsp[0].i < D_ALIGN_CHAOTIC)
                      yyerror("Illegal alignment - ignoring!");
                  else
                      tmpdungeon[n_dgns].flags |= yyvsp[0].i ;
              }
break;
case 19:
{
                  Strcpy(tmpdungeon[n_dgns].protoname, yyvsp[0].str);
                  Free(yyvsp[0].str);
              }
break;
case 25:
{
                  init_level();
                  Strcpy(tmplevel[n_levs].name, yyvsp[-3].str);
                  tmplevel[n_levs].boneschar = (char)yyvsp[-2].i;
                  tmplevel[n_levs].lev.base = couple.base;
                  tmplevel[n_levs].lev.rand = couple.rand;
                  tmpdungeon[n_dgns].levels++;
                  Free(yyvsp[-3].str);
              }
break;
case 26:
{
                  init_level();
                  Strcpy(tmplevel[n_levs].name, yyvsp[-4].str);
                  tmplevel[n_levs].boneschar = (char)yyvsp[-3].i;
                  tmplevel[n_levs].lev.base = couple.base;
                  tmplevel[n_levs].lev.rand = couple.rand;
                  tmplevel[n_levs].rndlevs = yyvsp[0].i;
                  tmpdungeon[n_dgns].levels++;
                  Free(yyvsp[-4].str);
              }
break;
case 27:
{
                  init_level();
                  Strcpy(tmplevel[n_levs].name, yyvsp[-4].str);
                  tmplevel[n_levs].boneschar = (char)yyvsp[-3].i;
                  tmplevel[n_levs].lev.base = couple.base;
                  tmplevel[n_levs].lev.rand = couple.rand;
                  tmplevel[n_levs].chance = yyvsp[0].i;
                  tmpdungeon[n_dgns].levels++;
                  Free(yyvsp[-4].str);
              }
break;
case 28:
{
                  init_level();
                  Strcpy(tmplevel[n_levs].name, yyvsp[-5].str);
                  tmplevel[n_levs].boneschar = (char)yyvsp[-4].i;
                  tmplevel[n_levs].lev.base = couple.base;
                  tmplevel[n_levs].lev.rand = couple.rand;
                  tmplevel[n_levs].chance = yyvsp[-1].i;
                  tmplevel[n_levs].rndlevs = yyvsp[0].i;
                  tmpdungeon[n_dgns].levels++;
                  Free(yyvsp[-5].str);
              }
break;
case 29:
{
                  if(yyvsp[0].i >= D_ALIGN_CHAOTIC)
                      yyerror("Illegal description - ignoring!");
                  else
                      tmplevel[n_levs].flags |= yyvsp[0].i ;
              }
break;
case 30:
{
                  if(yyvsp[0].i && yyvsp[0].i < D_ALIGN_CHAOTIC)
                      yyerror("Illegal alignment - ignoring!");
                  else
                      tmplevel[n_levs].flags |= yyvsp[0].i ;
              }
break;
case 31:
{
                  init_level();
                  Strcpy(tmplevel[n_levs].name, yyvsp[-4].str);
                  tmplevel[n_levs].boneschar = (char)yyvsp[-3].i;
                  tmplevel[n_levs].chain = getchain(yyvsp[-2].str);
                  tmplevel[n_levs].lev.base = couple.base;
                  tmplevel[n_levs].lev.rand = couple.rand;
                  if(!check_level()) n_levs--;
                  else tmpdungeon[n_dgns].levels++;
                  Free(yyvsp[-4].str);
                  Free(yyvsp[-2].str);
              }
break;
case 32:
{
                  init_level();
                  Strcpy(tmplevel[n_levs].name, yyvsp[-5].str);
                  tmplevel[n_levs].boneschar = (char)yyvsp[-4].i;
                  tmplevel[n_levs].chain = getchain(yyvsp[-3].str);
                  tmplevel[n_levs].lev.base = couple.base;
                  tmplevel[n_levs].lev.rand = couple.rand;
                  tmplevel[n_levs].rndlevs = yyvsp[0].i;
                  if(!check_level()) n_levs--;
                  else tmpdungeon[n_dgns].levels++;
                  Free(yyvsp[-5].str);
                  Free(yyvsp[-3].str);
              }
break;
case 33:
{
                  init_level();
                  Strcpy(tmplevel[n_levs].name, yyvsp[-5].str);
                  tmplevel[n_levs].boneschar = (char)yyvsp[-4].i;
                  tmplevel[n_levs].chain = getchain(yyvsp[-3].str);
                  tmplevel[n_levs].lev.base = couple.base;
                  tmplevel[n_levs].lev.rand = couple.rand;
                  tmplevel[n_levs].chance = yyvsp[0].i;
                  if(!check_level()) n_levs--;
                  else tmpdungeon[n_dgns].levels++;
                  Free(yyvsp[-5].str);
                  Free(yyvsp[-3].str);
              }
break;
case 34:
{
                  init_level();
                  Strcpy(tmplevel[n_levs].name, yyvsp[-6].str);
                  tmplevel[n_levs].boneschar = (char)yyvsp[-5].i;
                  tmplevel[n_levs].chain = getchain(yyvsp[-4].str);
                  tmplevel[n_levs].lev.base = couple.base;
                  tmplevel[n_levs].lev.rand = couple.rand;
                  tmplevel[n_levs].chance = yyvsp[-1].i;
                  tmplevel[n_levs].rndlevs = yyvsp[0].i;
                  if(!check_level()) n_levs--;
                  else tmpdungeon[n_dgns].levels++;
                  Free(yyvsp[-6].str);
                  Free(yyvsp[-4].str);
              }
break;
case 37:
{
                  init_branch();
                  Strcpy(tmpbranch[n_brs].name, yyvsp[-4].str);
                  tmpbranch[n_brs].lev.base = couple.base;
                  tmpbranch[n_brs].lev.rand = couple.rand;
                  tmpbranch[n_brs].type = yyvsp[-1].i;
                  tmpbranch[n_brs].up = yyvsp[0].i;
                  if(!check_branch()) n_brs--;
                  else tmpdungeon[n_dgns].branches++;
                  Free(yyvsp[-4].str);
              }
break;
case 38:
{
                  init_branch();
                  Strcpy(tmpbranch[n_brs].name, yyvsp[-5].str);
                  tmpbranch[n_brs].chain = getchain(yyvsp[-4].str);
                  tmpbranch[n_brs].lev.base = couple.base;
                  tmpbranch[n_brs].lev.rand = couple.rand;
                  tmpbranch[n_brs].type = yyvsp[-1].i;
                  tmpbranch[n_brs].up = yyvsp[0].i;
                  if(!check_branch()) n_brs--;
                  else tmpdungeon[n_dgns].branches++;
                  Free(yyvsp[-5].str);
                  Free(yyvsp[-4].str);
              }
break;
case 39:
{
                  yyval.i = TBR_STAIR;    /* two way stair */
              }
break;
case 40:
{
                  yyval.i = TBR_STAIR;    /* two way stair */
              }
break;
case 41:
{
                  yyval.i = TBR_NO_UP;    /* no up staircase */
              }
break;
case 42:
{
                  yyval.i = TBR_NO_DOWN;  /* no down staircase */
              }
break;
case 43:
{
                  yyval.i = TBR_PORTAL;   /* portal connection */
              }
break;
case 44:
{
                  yyval.i = 0;      /* defaults to down */
              }
break;
case 45:
{
                  yyval.i = yyvsp[0].i;
              }
break;
case 46:
{
                  char *p = yyvsp[0].str;
                  if (strlen(p) != 1) {
                      if (strcmp(p, "none") != 0)
               yyerror("Bones marker must be a single char, or \"none\"!");
                      *p = '\0';
                  }
                  yyval.i = *p;
                  Free(p);
              }
break;
case 47:
{
                  if (yyvsp[-3].i < -MAXLEVEL || yyvsp[-3].i > MAXLEVEL) {
                      yyerror("Abs base out of dlevel range - zeroing!");
                      couple.base = couple.rand = 0;
                  } else if (yyvsp[-1].i < -1 ||
                        ((yyvsp[-3].i < 0) ? (MAXLEVEL + yyvsp[-3].i + yyvsp[-1].i + 1) > MAXLEVEL :
                              (yyvsp[-3].i + yyvsp[-1].i) > MAXLEVEL)) {
                      yyerror("Abs range out of dlevel range - zeroing!");
                      couple.base = couple.rand = 0;
                  } else {
                      couple.base = yyvsp[-3].i;
                      couple.rand = yyvsp[-1].i;
                  }
              }
break;
case 48:
{
                  if (yyvsp[-3].i < -MAXLEVEL || yyvsp[-3].i > MAXLEVEL) {
                      yyerror("Rel base out of dlevel range - zeroing!");
                      couple.base = couple.rand = 0;
                  } else {
                      couple.base = yyvsp[-3].i;
                      couple.rand = yyvsp[-1].i;
                  }
              }
break;
    }
    yyssp -= yym;
    yystate = *yyssp;
    yyvsp -= yym;
    yym = yylhs[yyn];
    if (yystate == 0 && yym == 0)
    {
#if YYDEBUG
        if (yydebug)
            printf("%sdebug: after reduction, shifting from state 0 to\
 state %d\n", YYPREFIX, YYFINAL);
#endif
        yystate = YYFINAL;
        *++yyssp = YYFINAL;
        *++yyvsp = yyval;
        if (yychar < 0)
        {
            if ((yychar = yylex()) < 0) yychar = 0;
#if YYDEBUG
            if (yydebug)
            {
                yys = 0;
                if (yychar <= YYMAXTOKEN) yys = yyname[yychar];
                if (!yys) yys = "illegal-symbol";
                printf("%sdebug: state %d, reading %d (%s)\n",
                        YYPREFIX, YYFINAL, yychar, yys);
            }
#endif
        }
        if (yychar == 0) goto yyaccept;
        goto yyloop;
    }
    if ((yyn = yygindex[yym]) != 0 && (yyn += yystate) >= 0 &&
            yyn <= YYTABLESIZE && yycheck[yyn] == yystate)
        yystate = yytable[yyn];
    else
        yystate = yydgoto[yym];
#if YYDEBUG
    if (yydebug)
        printf("%sdebug: after reduction, shifting from state %d \
to state %d\n", YYPREFIX, *yyssp, yystate);
#endif
    if (yyssp >= yyss + yystacksize - 1)
    {
        goto yyoverflow;
    }
    *++yyssp = yystate;
    *++yyvsp = yyval;
    goto yyloop;
yyoverflow:
    yyerror("yacc stack overflow");
yyabort:
    return (1);
yyaccept:
    return (0);
}

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