/* A Bison parser, made from inform.y
   by GNU bison 1.35.  */

#define YYBISON 1  /* Identify Bison output.  */

# define	NUM	257
# define	DFILE	258
# define	CONDITION	259
# define	ALIAS	260
# define	RALIAS	261
# define	UNALIAS	262
# define	DUMPMEM	263
# define	AUTOMAP	264
# define	HELP	265
# define	UNDO	266
# define	REDO	267
# define	LANGUAGE	268
# define	INFOSOURCE	269
# define	INFOSOURCES	270
# define	COPYING	271
# define	WARRANTY	272
# define	PRINT	273
# define	SET	274
# define	MOVE	275
# define	TO	276
# define	GIVE	277
# define	REMOVE	278
# define	JUMP	279
# define	CONT	280
# define	STEP	281
# define	NEXT	282
# define	UNTIL	283
# define	STEPI	284
# define	NEXTI	285
# define	FINISH	286
# define	BREAK	287
# define	DELETE	288
# define	IF	289
# define	COND	290
# define	IGNORE	291
# define	BREAKPOINTS	292
# define	RESTORE	293
# define	RESTART	294
# define	QUIT	295
# define	RECORDON	296
# define	RECORDOFF	297
# define	REPLAY	298
# define	REPLAYOFF	299
# define	SYMBOL_FILE	300
# define	FRAME	301
# define	SELECT_FRAME	302
# define	BACKTRACE	303
# define	UP_FRAME	304
# define	DOWN_FRAME	305
# define	UP_SILENTLY	306
# define	DOWN_SILENTLY	307
# define	DISPLAY	308
# define	UNDISPLAY	309
# define	DISABLE_DISPLAY	310
# define	ENABLE_DISPLAY	311
# define	DISABLE_BREAK	312
# define	ENABLE_BREAK	313
# define	OBJECT_TREE	314
# define	FIND	315
# define	LIST_GLOBALS	316
# define	BTRUE	317
# define	BFALSE	318
# define	NOTHING	319
# define	PARENT	320
# define	CHILD	321
# define	SIBLING	322
# define	CHILDREN	323
# define	RANDOM	324
# define	ANDAND	325
# define	OROR	326
# define	NOTNOT	327
# define	OR	328
# define	BYTEARRAY	329
# define	WORDARRAY	330
# define	precNEG	331
# define	NUMBER	332
# define	OBJECT	333
# define	ROUTINE	334
# define	STRING	335
# define	GLOBAL	336
# define	LOCAL	337
# define	INCREMENT	338
# define	DECREMENT	339
# define	PROPADDR	340
# define	PROPLENGTH	341
# define	SUPERCLASS	342

#line 1 "inform.y"

/*  Nitfol - z-machine interpreter using Glk for output.
    Copyright (C) 1999  Evin Robertson

    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation; either version 2 of the License, or
    (at your option) any later version.

    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.

    You should have received a copy of the GNU General Public License
    along with this program; if not, write to the Free Software
    Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.

    The author can be reached at ecr+@andrew.cmu.edu
*/

#include "nitfol.h"
#include <ctype.h>

/* bison uses str* functions; make it use n_str* instead... */
#ifndef n_strcat
#define strcat(d, s) n_strcat(d, s)
#endif
#ifndef n_strlen
#define strlen(s) n_strlen(s)
#endif
#ifndef n_strcpy
#define strcpy(d, s) n_strcpy(d, s)
#endif
  
  
#ifdef DEBUGGING
  
  typedef struct zword_list zword_list;
  struct zword_list {
    zword_list *next;
    zword item;
  };

  typedef struct cond_list cond_list;
  struct cond_list {
    cond_list *next;
    zword val;
    BOOL (*condfunc)(zword a, zword b);
    BOOL opposite;
  };

  cond_list *condlist;
  
  static z_typed z_t(z_typed a, z_typed b, zword v);
  
  static const char *lex_expression;
  static int lex_offset;

  static const char *lex_tail(void) {
    const char *t = lex_expression + lex_offset;
    while(*t == ' ')
      t++;
    lex_offset = n_strlen(lex_expression);
    return t;
  }
  
  static z_typed inform_result;
  
  static int yylex(void);
  static void yyerror(const char *s);
  static void inform_help(void);
  
  int ignoreeffects;

#define YYERROR_VERBOSE
  
/*
#define YYDEBUG 1
*/


#line 84 "inform.y"
#ifndef YYSTYPE
typedef union {
  glui32 pcoffset;
  infix_file *filenum;
  z_typed val;
  
  zword_list *zlist;

  struct {
    BOOL (*condfunc)(zword a, zword b);
    BOOL opposite;
  } cond;

  BOOL flag;
} yystype;
# define YYSTYPE yystype
# define YYSTYPE_IS_TRIVIAL 1
#endif
#ifndef YYDEBUG
# define YYDEBUG 0
#endif



#define	YYFINAL		208
#define	YYFLAG		-32768
#define	YYNTBASE	104

/* YYTRANSLATE(YYLEX) -- Bison token number corresponding to YYLEX. */
#define YYTRANSLATE(x) ((unsigned)(x) <= 342 ? yytranslate[x] : 114)

/* YYTRANSLATE[YYLEX] -- Bison token number corresponding to YYLEX. */
static const char yytranslate[] =
{
       0,     2,     2,     2,     2,     2,     2,     2,     2,     2,
       2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
       2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
       2,     2,     2,     2,     2,   101,     2,    81,    82,     2,
      98,   103,    79,    77,    71,    78,    99,    80,     2,     2,
       2,     2,     2,     2,     2,     2,     2,     2,   102,     2,
       2,    72,     2,     2,     2,     2,     2,     2,     2,     2,
       2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
       2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
       2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
       2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
       2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
       2,     2,     2,     2,    83,     2,    84,     2,     2,     2,
       2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
       2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
       2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
       2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
       2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
       2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
       2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
       2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
       2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
       2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
       2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
       2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
       2,     2,     2,     2,     2,     2,     1,     3,     4,     5,
       6,     7,     8,     9,    10,    11,    12,    13,    14,    15,
      16,    17,    18,    19,    20,    21,    22,    23,    24,    25,
      26,    27,    28,    29,    30,    31,    32,    33,    34,    35,
      36,    37,    38,    39,    40,    41,    42,    43,    44,    45,
      46,    47,    48,    49,    50,    51,    52,    53,    54,    55,
      56,    57,    58,    59,    60,    61,    62,    63,    64,    65,
      66,    67,    68,    69,    70,    73,    74,    75,    76,    85,
      86,    87,    88,    89,    90,    91,    92,    93,    94,    95,
      96,    97,   100
};

#if YYDEBUG
static const short yyprhs[] =
{
       0,     0,     1,     3,     5,     7,     9,    11,    13,    15,
      17,    19,    21,    23,    25,    27,    29,    31,    33,    35,
      38,    41,    43,    46,    49,    52,    57,    59,    62,    64,
      66,    69,    73,    78,    81,    84,    86,    89,    91,    94,
      96,    99,   101,   103,   106,   108,   111,   113,   116,   120,
     123,   127,   130,   132,   135,   138,   141,   143,   145,   147,
     149,   151,   153,   156,   159,   161,   164,   166,   169,   171,
     174,   176,   179,   181,   184,   188,   190,   193,   196,   200,
     203,   205,   209,   210,   214,   216,   218,   222,   226,   227,
     232,   234,   236,   238,   240,   244,   249,   254,   259,   264,
     269,   274,   275,   280,   281,   286,   289,   293,   297,   301,
     305,   309,   313,   317,   320,   324,   328,   331,   334,   337,
     340,   343,   347,   351,   355,   358,   361,   364,   367,   370,
     373
};
static const short yyrhs[] =
{
      -1,   101,     0,     9,     0,     6,     0,     7,     0,     8,
       0,    10,     0,    11,     0,    40,     0,    39,     0,    42,
       0,    43,     0,    44,     0,    45,     0,    41,     0,    12,
       0,    13,     0,    46,     0,    19,   108,     0,    20,   108,
       0,    54,     0,    55,     3,     0,    56,     3,     0,    57,
       3,     0,    21,   108,    22,   108,     0,    60,     0,    60,
     108,     0,    61,     0,    62,     0,    62,   108,     0,    23,
     108,     3,     0,    23,   108,    84,     3,     0,    24,   108,
       0,    25,   105,     0,    26,     0,    26,     3,     0,    27,
       0,    27,     3,     0,    28,     0,    28,     3,     0,    29,
       0,    30,     0,    30,     3,     0,    31,     0,    31,     3,
       0,    32,     0,    33,   105,     0,    33,   105,    35,     0,
      36,     3,     0,    37,     3,     3,     0,    34,     3,     0,
      38,     0,    38,     3,     0,    58,     3,     0,    59,     3,
       0,    14,     0,    15,     0,    16,     0,    17,     0,    18,
       0,    47,     0,    47,     3,     0,    48,     3,     0,    50,
       0,    50,     3,     0,    52,     0,    52,     3,     0,    51,
       0,    51,     3,     0,    53,     0,    53,     3,     0,    49,
       0,    49,     3,     0,    49,    78,     3,     0,     3,     0,
      77,     3,     0,    78,     3,     0,     4,   102,     3,     0,
      79,     3,     0,   111,     0,   106,    76,   111,     0,     0,
     111,    71,   107,     0,   111,     0,   109,     0,   108,    71,
     111,     0,   108,    71,   109,     0,     0,   111,     5,   110,
     106,     0,     3,     0,    64,     0,    63,     0,    65,     0,
     111,    72,   111,     0,    66,    98,   108,   103,     0,    67,
      98,   108,   103,     0,    68,    98,   108,   103,     0,    69,
      98,   108,   103,     0,    70,    98,   108,   103,     0,   111,
      98,   107,   103,     0,     0,   111,    73,   112,   111,     0,
       0,   111,    74,   113,   111,     0,    75,   111,     0,   111,
      77,   111,     0,   111,    78,   111,     0,   111,    79,   111,
       0,   111,    80,   111,     0,   111,    81,   111,     0,   111,
      82,   111,     0,   111,    83,   111,     0,    84,   111,     0,
     111,    85,   111,     0,   111,    86,   111,     0,    78,   111,
       0,    94,   111,     0,   111,    94,     0,    95,   111,     0,
     111,    95,     0,   111,    96,   111,     0,   111,    97,   111,
       0,   111,    99,   111,     0,    88,   111,     0,    89,   111,
       0,    90,   111,     0,    91,   111,     0,    92,   111,     0,
      93,   111,     0,    98,   108,   103,     0
};

#endif

#if YYDEBUG
/* YYRLINE[YYN] -- source line where rule number YYN was defined. */
static const short yyrline[] =
{
       0,   130,   132,   134,   142,   144,   146,   148,   150,   152,
     154,   165,   167,   169,   171,   173,   175,   182,   189,   198,
     200,   202,   204,   206,   208,   210,   212,   214,   216,   221,
     239,   255,   257,   259,   261,   263,   265,   267,   269,   271,
     273,   275,   277,   279,   281,   283,   285,   287,   289,   291,
     293,   295,   297,   299,   301,   303,   305,   307,   309,   311,
     313,   315,   317,   319,   321,   323,   325,   327,   329,   331,
     333,   335,   337,   339,   341,   349,   350,   351,   352,   353,
     357,   364,   377,   378,   382,   383,   384,   385,   389,   389,
     394,   396,   398,   400,   403,   406,   408,   410,   412,   415,
     425,   443,   443,   445,   445,   447,   450,   452,   454,   456,
     458,   460,   462,   464,   467,   469,   472,   475,   477,   479,
     481,   484,   486,   489,   497,   499,   501,   503,   505,   507,
     509
};
#endif


#if (YYDEBUG) || defined YYERROR_VERBOSE

/* YYTNAME[TOKEN_NUM] -- String name of the token TOKEN_NUM. */
static const char *const yytname[] =
{
  "$", "error", "$undefined.", "NUM", "DFILE", "CONDITION", "ALIAS", 
  "RALIAS", "UNALIAS", "DUMPMEM", "AUTOMAP", "HELP", "UNDO", "REDO", 
  "LANGUAGE", "INFOSOURCE", "INFOSOURCES", "COPYING", "WARRANTY", "PRINT", 
  "SET", "MOVE", "TO", "GIVE", "REMOVE", "JUMP", "CONT", "STEP", "NEXT", 
  "UNTIL", "STEPI", "NEXTI", "FINISH", "BREAK", "DELETE", "IF", "COND", 
  "IGNORE", "BREAKPOINTS", "RESTORE", "RESTART", "QUIT", "RECORDON", 
  "RECORDOFF", "REPLAY", "REPLAYOFF", "SYMBOL_FILE", "FRAME", 
  "SELECT_FRAME", "BACKTRACE", "UP_FRAME", "DOWN_FRAME", "UP_SILENTLY", 
  "DOWN_SILENTLY", "DISPLAY", "UNDISPLAY", "DISABLE_DISPLAY", 
  "ENABLE_DISPLAY", "DISABLE_BREAK", "ENABLE_BREAK", "OBJECT_TREE", 
  "FIND", "LIST_GLOBALS", "BTRUE", "BFALSE", "NOTHING", "PARENT", "CHILD", 
  "SIBLING", "CHILDREN", "RANDOM", "','", "'='", "ANDAND", "OROR", 
  "NOTNOT", "OR", "'+'", "'-'", "'*'", "'/'", "'%'", "'&'", "'|'", "'~'", 
  "BYTEARRAY", "WORDARRAY", "precNEG", "NUMBER", "OBJECT", "ROUTINE", 
  "STRING", "GLOBAL", "LOCAL", "INCREMENT", "DECREMENT", "PROPADDR", 
  "PROPLENGTH", "'('", "'.'", "SUPERCLASS", "'#'", "':'", "')'", "input", 
  "linespec", "orlist", "arglist", "commaexp", "condexp", "@1", "exp", 
  "@2", "@3", 0
};
#endif

/* YYR1[YYN] -- Symbol number of symbol that rule YYN derives. */
static const short yyr1[] =
{
       0,   104,   104,   104,   104,   104,   104,   104,   104,   104,
     104,   104,   104,   104,   104,   104,   104,   104,   104,   104,
     104,   104,   104,   104,   104,   104,   104,   104,   104,   104,
     104,   104,   104,   104,   104,   104,   104,   104,   104,   104,
     104,   104,   104,   104,   104,   104,   104,   104,   104,   104,
     104,   104,   104,   104,   104,   104,   104,   104,   104,   104,
     104,   104,   104,   104,   104,   104,   104,   104,   104,   104,
     104,   104,   104,   104,   104,   105,   105,   105,   105,   105,
     106,   106,   107,   107,   108,   108,   108,   108,   110,   109,
     111,   111,   111,   111,   111,   111,   111,   111,   111,   111,
     111,   112,   111,   113,   111,   111,   111,   111,   111,   111,
     111,   111,   111,   111,   111,   111,   111,   111,   111,   111,
     111,   111,   111,   111,   111,   111,   111,   111,   111,   111,
     111
};

/* YYR2[YYN] -- Number of symbols composing right hand side of rule YYN. */
static const short yyr2[] =
{
       0,     0,     1,     1,     1,     1,     1,     1,     1,     1,
       1,     1,     1,     1,     1,     1,     1,     1,     1,     2,
       2,     1,     2,     2,     2,     4,     1,     2,     1,     1,
       2,     3,     4,     2,     2,     1,     2,     1,     2,     1,
       2,     1,     1,     2,     1,     2,     1,     2,     3,     2,
       3,     2,     1,     2,     2,     2,     1,     1,     1,     1,
       1,     1,     2,     2,     1,     2,     1,     2,     1,     2,
       1,     2,     1,     2,     3,     1,     2,     2,     3,     2,
       1,     3,     0,     3,     1,     1,     3,     3,     0,     4,
       1,     1,     1,     1,     3,     4,     4,     4,     4,     4,
       4,     0,     4,     0,     4,     2,     3,     3,     3,     3,
       3,     3,     3,     2,     3,     3,     2,     2,     2,     2,
       2,     3,     3,     3,     2,     2,     2,     2,     2,     2,
       3
};

/* YYDEFACT[S] -- default rule to reduce with in state S when YYTABLE
   doesn't specify something else to do.  Zero means the default is an
   error. */
static const short yydefact[] =
{
       1,     4,     5,     6,     3,     7,     8,    16,    17,    56,
      57,    58,    59,    60,     0,     0,     0,     0,     0,     0,
      35,    37,    39,    41,    42,    44,    46,     0,     0,     0,
       0,    52,    10,     9,    15,    11,    12,    13,    14,    18,
      61,     0,    72,    64,    68,    66,    70,    21,     0,     0,
       0,     0,     0,    26,    28,    29,     2,    90,    92,    91,
      93,     0,     0,     0,     0,     0,     0,     0,     0,     0,
       0,     0,     0,     0,     0,     0,     0,     0,    19,    85,
      84,    20,     0,     0,    33,    75,     0,     0,     0,     0,
      34,    36,    38,    40,    43,    45,    47,    51,    49,     0,
      53,    62,    63,    73,     0,    65,    69,    67,    71,    22,
      23,    24,    54,    55,    27,    30,     0,     0,     0,     0,
       0,   105,   116,   113,   124,   125,   126,   127,   128,   129,
     117,   119,     0,     0,    88,     0,   101,   103,     0,     0,
       0,     0,     0,     0,     0,     0,     0,   118,   120,     0,
       0,    82,     0,     0,    31,     0,     0,    76,    77,    79,
      48,    50,    74,     0,     0,     0,     0,     0,   130,    87,
      86,     0,    94,     0,     0,   106,   107,   108,   109,   110,
     111,   112,   114,   115,   121,   122,     0,     0,   123,    25,
      32,    78,    95,    96,    97,    98,    99,    89,    80,   102,
     104,   100,    82,     0,    83,    81,     0,     0,     0
};

static const short yydefgoto[] =
{
     206,    90,   197,   186,    78,    79,   171,    80,   173,   174
};

static const short yypact[] =
{
     136,-32768,-32768,-32768,-32768,-32768,-32768,-32768,-32768,-32768,
  -32768,-32768,-32768,-32768,   155,   155,   155,   155,   155,    15,
      28,    33,    34,-32768,    44,    45,-32768,    15,    46,    47,
      48,    55,-32768,-32768,-32768,-32768,-32768,-32768,-32768,-32768,
      56,    57,    13,    58,    60,    69,    71,-32768,    72,    83,
      92,    93,    94,   155,-32768,   155,-32768,-32768,-32768,-32768,
  -32768,   -59,     1,     2,     8,     9,   155,   155,   155,   155,
     155,   155,   155,   155,   155,   155,   155,   155,    37,-32768,
     194,    37,    -7,    14,    37,-32768,    18,   107,   126,   133,
  -32768,-32768,-32768,-32768,-32768,-32768,   102,-32768,-32768,   168,
  -32768,-32768,-32768,-32768,   199,-32768,-32768,-32768,-32768,-32768,
  -32768,-32768,-32768,-32768,    37,    37,   155,   155,   155,   155,
     155,    36,   -29,   115,   -29,   -29,   -29,   -29,   -29,   -29,
      29,    29,   -51,   155,-32768,   155,-32768,-32768,   155,   155,
     155,   155,   155,   155,   155,   155,   155,-32768,-32768,   155,
     155,   155,   155,   155,-32768,   200,   201,-32768,-32768,-32768,
  -32768,-32768,-32768,   -50,   -49,   -48,   -47,   -46,-32768,-32768,
     194,   155,   251,   155,   155,   -53,   -53,   115,   115,   115,
     115,   115,   -29,   -29,   -64,   -64,   103,   223,-32768,    37,
  -32768,-32768,-32768,-32768,-32768,-32768,-32768,    63,   251,    36,
      36,-32768,   155,   155,-32768,   251,   205,   207,-32768
};

static const short yypgoto[] =
{
  -32768,   181,-32768,    24,   -15,    82,-32768,   -62,-32768,-32768
};


#define	YYLAST		350


static const short yytable[] =
{
      81,    82,    83,    84,   121,   122,   123,   124,   125,   126,
     127,   128,   129,   130,   131,   153,   103,   154,    85,    86,
     133,   133,   133,   133,   133,   133,   140,   141,   142,   143,
     144,    91,   145,   146,   151,   152,    92,    93,   114,   116,
     115,   147,   148,   149,   150,   151,   152,    94,    95,    97,
      98,    99,   168,   192,   193,   194,   195,   196,   100,   101,
     102,   105,   132,   106,   133,   147,   148,   149,   150,   151,
     152,   170,   107,   172,   108,   109,   175,   176,   177,   178,
     179,   180,   181,   182,   183,   133,   110,   184,   185,   187,
     188,   104,    87,    88,    89,   111,   112,   113,   155,   117,
     118,   163,   164,   165,   166,   167,   119,   120,   133,   198,
     157,   199,   200,   138,   139,   140,   141,   142,   143,   144,
     156,   145,   146,-32768,-32768,   149,   150,   151,   152,   158,
     147,   148,   149,   150,   151,   152,   159,   160,   189,   203,
     187,   205,     1,     2,     3,     4,     5,     6,     7,     8,
       9,    10,    11,    12,    13,    14,    15,    16,    57,    17,
      18,    19,    20,    21,    22,    23,    24,    25,    26,    27,
      28,   161,    29,    30,    31,    32,    33,    34,    35,    36,
      37,    38,    39,    40,    41,    42,    43,    44,    45,    46,
      47,    48,    49,    50,    51,    52,    53,    54,    55,   134,
     145,   146,   162,   190,   191,   207,   201,   208,    96,   147,
     148,   149,   150,   151,   152,   169,     0,     0,    58,    59,
      60,    61,    62,    63,    64,    65,   204,     0,     0,     0,
      66,     0,     0,    67,     0,     0,     0,    56,     0,    68,
       0,     0,     0,    69,    70,    71,    72,    73,    74,    75,
      76,     0,     0,    77,     0,     0,     0,     0,     0,     0,
       0,     0,     0,     0,     0,     0,   135,   136,   137,     0,
       0,   138,   139,   140,   141,   142,   143,   144,     0,   145,
     146,     0,     0,     0,     0,     0,     0,     0,   147,   148,
     149,   150,   151,   152,   202,   135,   136,   137,     0,     0,
     138,   139,   140,   141,   142,   143,   144,     0,   145,   146,
       0,     0,     0,     0,     0,     0,     0,   147,   148,   149,
     150,   151,   152,   135,   136,   137,     0,     0,   138,   139,
     140,   141,   142,   143,   144,     0,   145,   146,     0,     0,
       0,     0,     0,     0,     0,   147,   148,   149,   150,   151,
     152
};

static const short yycheck[] =
{
      15,    16,    17,    18,    66,    67,    68,    69,    70,    71,
      72,    73,    74,    75,    76,    22,     3,     3,     3,     4,
      71,    71,    71,    71,    71,    71,    79,    80,    81,    82,
      83,     3,    85,    86,    98,    99,     3,     3,    53,    98,
      55,    94,    95,    96,    97,    98,    99,     3,     3,     3,
       3,     3,   103,   103,   103,   103,   103,   103,     3,     3,
       3,     3,    77,     3,    71,    94,    95,    96,    97,    98,
      99,   133,     3,   135,     3,     3,   138,   139,   140,   141,
     142,   143,   144,   145,   146,    71,     3,   149,   150,   151,
     152,    78,    77,    78,    79,     3,     3,     3,    84,    98,
      98,   116,   117,   118,   119,   120,    98,    98,    71,   171,
       3,   173,   174,    77,    78,    79,    80,    81,    82,    83,
     102,    85,    86,    94,    95,    96,    97,    98,    99,     3,
      94,    95,    96,    97,    98,    99,     3,    35,   153,    76,
     202,   203,     6,     7,     8,     9,    10,    11,    12,    13,
      14,    15,    16,    17,    18,    19,    20,    21,     3,    23,
      24,    25,    26,    27,    28,    29,    30,    31,    32,    33,
      34,     3,    36,    37,    38,    39,    40,    41,    42,    43,
      44,    45,    46,    47,    48,    49,    50,    51,    52,    53,
      54,    55,    56,    57,    58,    59,    60,    61,    62,     5,
      85,    86,     3,     3,     3,     0,   103,     0,    27,    94,
      95,    96,    97,    98,    99,   133,    -1,    -1,    63,    64,
      65,    66,    67,    68,    69,    70,   202,    -1,    -1,    -1,
      75,    -1,    -1,    78,    -1,    -1,    -1,   101,    -1,    84,
      -1,    -1,    -1,    88,    89,    90,    91,    92,    93,    94,
      95,    -1,    -1,    98,    -1,    -1,    -1,    -1,    -1,    -1,
      -1,    -1,    -1,    -1,    -1,    -1,    72,    73,    74,    -1,
      -1,    77,    78,    79,    80,    81,    82,    83,    -1,    85,
      86,    -1,    -1,    -1,    -1,    -1,    -1,    -1,    94,    95,
      96,    97,    98,    99,    71,    72,    73,    74,    -1,    -1,
      77,    78,    79,    80,    81,    82,    83,    -1,    85,    86,
      -1,    -1,    -1,    -1,    -1,    -1,    -1,    94,    95,    96,
      97,    98,    99,    72,    73,    74,    -1,    -1,    77,    78,
      79,    80,    81,    82,    83,    -1,    85,    86,    -1,    -1,
      -1,    -1,    -1,    -1,    -1,    94,    95,    96,    97,    98,
      99
};
/* -*-C-*-  Note some compilers choke on comments on `#line' lines.  */
#line 3 "/usr/share/bison/bison.simple"

/* Skeleton output parser for bison,

   Copyright (C) 1984, 1989, 1990, 2000, 2001, 2002 Free Software
   Foundation, Inc.

   This program is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation; either version 2, or (at your option)
   any later version.

   This program is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU General Public License for more details.

   You should have received a copy of the GNU General Public License
   along with this program; if not, write to the Free Software
   Foundation, Inc., 51 Franklin Street, Fifth Floor,
   Boston, MA 02110-1301, USA.  */

/* As a special exception, when this file is copied by Bison into a
   Bison output file, you may use that output file without restriction.
   This special exception was added by the Free Software Foundation
   in version 1.24 of Bison.  */

/* This is the parser code that is written into each bison parser when
   the %semantic_parser declaration is not specified in the grammar.
   It was written by Richard Stallman by simplifying the hairy parser
   used when %semantic_parser is specified.  */

/* All symbols defined below should begin with yy or YY, to avoid
   infringing on user name space.  This should be done even for local
   variables, as they might otherwise be expanded by user macros.
   There are some unavoidable exceptions within include files to
   define necessary library symbols; they are noted "INFRINGES ON
   USER NAME SPACE" below.  */

#if ! defined (yyoverflow) || defined (YYERROR_VERBOSE)

/* The parser invokes alloca or malloc; define the necessary symbols.  */

# if YYSTACK_USE_ALLOCA
#  define YYSTACK_ALLOC alloca
# else
#  ifndef YYSTACK_USE_ALLOCA
#   if defined (alloca) || defined (_ALLOCA_H)
#    define YYSTACK_ALLOC alloca
#   else
#    ifdef __GNUC__
#     define YYSTACK_ALLOC __builtin_alloca
#    endif
#   endif
#  endif
# endif

# ifdef YYSTACK_ALLOC
   /* Pacify GCC's `empty if-body' warning. */
#  define YYSTACK_FREE(Ptr) do { /* empty */; } while (0)
# else
#  if defined (__STDC__) || defined (__cplusplus)
#   include <stdlib.h> /* INFRINGES ON USER NAME SPACE */
#   define YYSIZE_T size_t
#  endif
#  define YYSTACK_ALLOC malloc
#  define YYSTACK_FREE free
# endif
#endif /* ! defined (yyoverflow) || defined (YYERROR_VERBOSE) */


#if (! defined (yyoverflow) \
     && (! defined (__cplusplus) \
	 || (YYLTYPE_IS_TRIVIAL && YYSTYPE_IS_TRIVIAL)))

/* A type that is properly aligned for any stack member.  */
union yyalloc
{
  short yyss;
  YYSTYPE yyvs;
# if YYLSP_NEEDED
  YYLTYPE yyls;
# endif
};

/* The size of the maximum gap between one aligned stack and the next.  */
# define YYSTACK_GAP_MAX (sizeof (union yyalloc) - 1)

/* The size of an array large to enough to hold all stacks, each with
   N elements.  */
# if YYLSP_NEEDED
#  define YYSTACK_BYTES(N) \
     ((N) * (sizeof (short) + sizeof (YYSTYPE) + sizeof (YYLTYPE))	\
      + 2 * YYSTACK_GAP_MAX)
# else
#  define YYSTACK_BYTES(N) \
     ((N) * (sizeof (short) + sizeof (YYSTYPE))				\
      + YYSTACK_GAP_MAX)
# endif

/* Copy COUNT objects from FROM to TO.  The source and destination do
   not overlap.  */
# ifndef YYCOPY
#  if 1 < __GNUC__
#   define YYCOPY(To, From, Count) \
      __builtin_memcpy (To, From, (Count) * sizeof (*(From)))
#  else
#   define YYCOPY(To, From, Count)		\
      do					\
	{					\
	  register YYSIZE_T yyi;		\
	  for (yyi = 0; yyi < (Count); yyi++)	\
	    (To)[yyi] = (From)[yyi];		\
	}					\
      while (0)
#  endif
# endif

/* Relocate STACK from its old location to the new one.  The
   local variables YYSIZE and YYSTACKSIZE give the old and new number of
   elements in the stack, and YYPTR gives the new location of the
   stack.  Advance YYPTR to a properly aligned location for the next
   stack.  */
# define YYSTACK_RELOCATE(Stack)					\
    do									\
      {									\
	YYSIZE_T yynewbytes;						\
	YYCOPY (&yyptr->Stack, Stack, yysize);				\
	Stack = &yyptr->Stack;						\
	yynewbytes = yystacksize * sizeof (*Stack) + YYSTACK_GAP_MAX;	\
	yyptr += yynewbytes / sizeof (*yyptr);				\
      }									\
    while (0)

#endif


#if ! defined (YYSIZE_T) && defined (__SIZE_TYPE__)
# define YYSIZE_T __SIZE_TYPE__
#endif
#if ! defined (YYSIZE_T) && defined (size_t)
# define YYSIZE_T size_t
#endif
#if ! defined (YYSIZE_T)
# if defined (__STDC__) || defined (__cplusplus)
#  include <stddef.h> /* INFRINGES ON USER NAME SPACE */
#  define YYSIZE_T size_t
# endif
#endif
#if ! defined (YYSIZE_T)
# define YYSIZE_T unsigned int
#endif

#define yyerrok		(yyerrstatus = 0)
#define yyclearin	(yychar = YYEMPTY)
#define YYEMPTY		-2
#define YYEOF		0
#define YYACCEPT	goto yyacceptlab
#define YYABORT 	goto yyabortlab
#define YYERROR		goto yyerrlab1
/* Like YYERROR except do call yyerror.  This remains here temporarily
   to ease the transition to the new meaning of YYERROR, for GCC.
   Once GCC version 2 has supplanted version 1, this can go.  */
#define YYFAIL		goto yyerrlab
#define YYRECOVERING()  (!!yyerrstatus)
#define YYBACKUP(Token, Value)					\
do								\
  if (yychar == YYEMPTY && yylen == 1)				\
    {								\
      yychar = (Token);						\
      yylval = (Value);						\
      yychar1 = YYTRANSLATE (yychar);				\
      YYPOPSTACK;						\
      goto yybackup;						\
    }								\
  else								\
    { 								\
      yyerror ("syntax error: cannot back up");			\
      YYERROR;							\
    }								\
while (0)

#define YYTERROR	1
#define YYERRCODE	256


/* YYLLOC_DEFAULT -- Compute the default location (before the actions
   are run).

   When YYLLOC_DEFAULT is run, CURRENT is set the location of the
   first token.  By default, to implement support for ranges, extend
   its range to the last symbol.  */

#ifndef YYLLOC_DEFAULT
# define YYLLOC_DEFAULT(Current, Rhs, N)       	\
   Current.last_line   = Rhs[N].last_line;	\
   Current.last_column = Rhs[N].last_column;
#endif


/* YYLEX -- calling `yylex' with the right arguments.  */

#if YYPURE
# if YYLSP_NEEDED
#  ifdef YYLEX_PARAM
#   define YYLEX		yylex (&yylval, &yylloc, YYLEX_PARAM)
#  else
#   define YYLEX		yylex (&yylval, &yylloc)
#  endif
# else /* !YYLSP_NEEDED */
#  ifdef YYLEX_PARAM
#   define YYLEX		yylex (&yylval, YYLEX_PARAM)
#  else
#   define YYLEX		yylex (&yylval)
#  endif
# endif /* !YYLSP_NEEDED */
#else /* !YYPURE */
# define YYLEX			yylex ()
#endif /* !YYPURE */


/* Enable debugging if requested.  */
#if YYDEBUG

# ifndef YYFPRINTF
#  include <stdio.h> /* INFRINGES ON USER NAME SPACE */
#  define YYFPRINTF fprintf
# endif

# define YYDPRINTF(Args)			\
do {						\
  if (yydebug)					\
    YYFPRINTF Args;				\
} while (0)
/* Nonzero means print parse trace.  It is left uninitialized so that
   multiple parsers can coexist.  */
int yydebug;
#else /* !YYDEBUG */
# define YYDPRINTF(Args)
#endif /* !YYDEBUG */

/* YYINITDEPTH -- initial size of the parser's stacks.  */
#ifndef	YYINITDEPTH
# define YYINITDEPTH 200
#endif

/* YYMAXDEPTH -- maximum size the stacks can grow to (effective only
   if the built-in stack extension method is used).

   Do not make this value too large; the results are undefined if
   SIZE_MAX < YYSTACK_BYTES (YYMAXDEPTH)
   evaluated with infinite-precision integer arithmetic.  */

#if YYMAXDEPTH == 0
# undef YYMAXDEPTH
#endif

#ifndef YYMAXDEPTH
# define YYMAXDEPTH 10000
#endif

#ifdef YYERROR_VERBOSE

# ifndef yystrlen
#  if defined (__GLIBC__) && defined (_STRING_H)
#   define yystrlen strlen
#  else
/* Return the length of YYSTR.  */
static YYSIZE_T
#   if defined (__STDC__) || defined (__cplusplus)
yystrlen (const char *yystr)
#   else
yystrlen (yystr)
     const char *yystr;
#   endif
{
  register const char *yys = yystr;

  while (*yys++ != '\0')
    continue;

  return yys - yystr - 1;
}
#  endif
# endif

# ifndef yystpcpy
#  if defined (__GLIBC__) && defined (_STRING_H) && defined (_GNU_SOURCE)
#   define yystpcpy stpcpy
#  else
/* Copy YYSRC to YYDEST, returning the address of the terminating '\0' in
   YYDEST.  */
static char *
#   if defined (__STDC__) || defined (__cplusplus)
yystpcpy (char *yydest, const char *yysrc)
#   else
yystpcpy (yydest, yysrc)
     char *yydest;
     const char *yysrc;
#   endif
{
  register char *yyd = yydest;
  register const char *yys = yysrc;

  while ((*yyd++ = *yys++) != '\0')
    continue;

  return yyd - 1;
}
#  endif
# endif
#endif

#line 315 "/usr/share/bison/bison.simple"


/* The user can define YYPARSE_PARAM as the name of an argument to be passed
   into yyparse.  The argument should have type void *.
   It should actually point to an object.
   Grammar actions can access the variable by casting it
   to the proper pointer type.  */

#ifdef YYPARSE_PARAM
# if defined (__STDC__) || defined (__cplusplus)
#  define YYPARSE_PARAM_ARG void *YYPARSE_PARAM
#  define YYPARSE_PARAM_DECL
# else
#  define YYPARSE_PARAM_ARG YYPARSE_PARAM
#  define YYPARSE_PARAM_DECL void *YYPARSE_PARAM;
# endif
#else /* !YYPARSE_PARAM */
# define YYPARSE_PARAM_ARG
# define YYPARSE_PARAM_DECL
#endif /* !YYPARSE_PARAM */

/* Prevent warning if -Wstrict-prototypes.  */
#ifdef __GNUC__
# ifdef YYPARSE_PARAM
int yyparse (void *);
# else
int yyparse (void);
# endif
#endif

/* YY_DECL_VARIABLES -- depending whether we use a pure parser,
   variables are global, or local to YYPARSE.  */

#define YY_DECL_NON_LSP_VARIABLES			\
/* The lookahead symbol.  */				\
int yychar;						\
							\
/* The semantic value of the lookahead symbol. */	\
YYSTYPE yylval;						\
							\
/* Number of parse errors so far.  */			\
int yynerrs;

#if YYLSP_NEEDED
# define YY_DECL_VARIABLES			\
YY_DECL_NON_LSP_VARIABLES			\
						\
/* Location data for the lookahead symbol.  */	\
YYLTYPE yylloc;
#else
# define YY_DECL_VARIABLES			\
YY_DECL_NON_LSP_VARIABLES
#endif


/* If nonreentrant, generate the variables here. */

#if !YYPURE
YY_DECL_VARIABLES
#endif  /* !YYPURE */

int
yyparse (YYPARSE_PARAM_ARG)
     YYPARSE_PARAM_DECL
{
  /* If reentrant, generate the variables here. */
#if YYPURE
  YY_DECL_VARIABLES
#endif  /* !YYPURE */

  register int yystate;
  register int yyn;
  int yyresult;
  /* Number of tokens to shift before error messages enabled.  */
  int yyerrstatus;
  /* Lookahead token as an internal (translated) token number.  */
  int yychar1 = 0;

  /* Three stacks and their tools:
     `yyss': related to states,
     `yyvs': related to semantic values,
     `yyls': related to locations.

     Refer to the stacks thru separate pointers, to allow yyoverflow
     to reallocate them elsewhere.  */

  /* The state stack. */
  short	yyssa[YYINITDEPTH];
  short *yyss = yyssa;
  register short *yyssp;

  /* The semantic value stack.  */
  YYSTYPE yyvsa[YYINITDEPTH];
  YYSTYPE *yyvs = yyvsa;
  register YYSTYPE *yyvsp;

#if YYLSP_NEEDED
  /* The location stack.  */
  YYLTYPE yylsa[YYINITDEPTH];
  YYLTYPE *yyls = yylsa;
  YYLTYPE *yylsp;
#endif

#if YYLSP_NEEDED
# define YYPOPSTACK   (yyvsp--, yyssp--, yylsp--)
#else
# define YYPOPSTACK   (yyvsp--, yyssp--)
#endif

  YYSIZE_T yystacksize = YYINITDEPTH;


  /* The variables used to return semantic value and location from the
     action routines.  */
  YYSTYPE yyval;
#if YYLSP_NEEDED
  YYLTYPE yyloc;
#endif

  /* When reducing, the number of symbols on the RHS of the reduced
     rule. */
  int yylen;

  YYDPRINTF ((stderr, "Starting parse\n"));

  yystate = 0;
  yyerrstatus = 0;
  yynerrs = 0;
  yychar = YYEMPTY;		/* Cause a token to be read.  */

  /* Initialize stack pointers.
     Waste one element of value and location stack
     so that they stay on the same level as the state stack.
     The wasted elements are never initialized.  */

  yyssp = yyss;
  yyvsp = yyvs;
#if YYLSP_NEEDED
  yylsp = yyls;
#endif
  goto yysetstate;

/*------------------------------------------------------------.
| yynewstate -- Push a new state, which is found in yystate.  |
`------------------------------------------------------------*/
 yynewstate:
  /* In all cases, when you get here, the value and location stacks
     have just been pushed. so pushing a state here evens the stacks.
     */
  yyssp++;

 yysetstate:
  *yyssp = yystate;

  if (yyssp >= yyss + yystacksize - 1)
    {
      /* Get the current used size of the three stacks, in elements.  */
      YYSIZE_T yysize = yyssp - yyss + 1;

#ifdef yyoverflow
      {
	/* Give user a chance to reallocate the stack. Use copies of
	   these so that the &'s don't force the real ones into
	   memory.  */
	YYSTYPE *yyvs1 = yyvs;
	short *yyss1 = yyss;

	/* Each stack pointer address is followed by the size of the
	   data in use in that stack, in bytes.  */
# if YYLSP_NEEDED
	YYLTYPE *yyls1 = yyls;
	/* This used to be a conditional around just the two extra args,
	   but that might be undefined if yyoverflow is a macro.  */
	yyoverflow ("parser stack overflow",
		    &yyss1, yysize * sizeof (*yyssp),
		    &yyvs1, yysize * sizeof (*yyvsp),
		    &yyls1, yysize * sizeof (*yylsp),
		    &yystacksize);
	yyls = yyls1;
# else
	yyoverflow ("parser stack overflow",
		    &yyss1, yysize * sizeof (*yyssp),
		    &yyvs1, yysize * sizeof (*yyvsp),
		    &yystacksize);
# endif
	yyss = yyss1;
	yyvs = yyvs1;
      }
#else /* no yyoverflow */
# ifndef YYSTACK_RELOCATE
      goto yyoverflowlab;
# else
      /* Extend the stack our own way.  */
      if (yystacksize >= YYMAXDEPTH)
	goto yyoverflowlab;
      yystacksize *= 2;
      if (yystacksize > YYMAXDEPTH)
	yystacksize = YYMAXDEPTH;

      {
	short *yyss1 = yyss;
	union yyalloc *yyptr =
	  (union yyalloc *) YYSTACK_ALLOC (YYSTACK_BYTES (yystacksize));
	if (! yyptr)
	  goto yyoverflowlab;
	YYSTACK_RELOCATE (yyss);
	YYSTACK_RELOCATE (yyvs);
# if YYLSP_NEEDED
	YYSTACK_RELOCATE (yyls);
# endif
# undef YYSTACK_RELOCATE
	if (yyss1 != yyssa)
	  YYSTACK_FREE (yyss1);
      }
# endif
#endif /* no yyoverflow */

      yyssp = yyss + yysize - 1;
      yyvsp = yyvs + yysize - 1;
#if YYLSP_NEEDED
      yylsp = yyls + yysize - 1;
#endif

      YYDPRINTF ((stderr, "Stack size increased to %lu\n",
		  (unsigned long int) yystacksize));

      if (yyssp >= yyss + yystacksize - 1)
	YYABORT;
    }

  YYDPRINTF ((stderr, "Entering state %d\n", yystate));

  goto yybackup;


/*-----------.
| yybackup.  |
`-----------*/
yybackup:

/* Do appropriate processing given the current state.  */
/* Read a lookahead token if we need one and don't already have one.  */
/* yyresume: */

  /* First try to decide what to do without reference to lookahead token.  */

  yyn = yypact[yystate];
  if (yyn == YYFLAG)
    goto yydefault;

  /* Not known => get a lookahead token if don't already have one.  */

  /* yychar is either YYEMPTY or YYEOF
     or a valid token in external form.  */

  if (yychar == YYEMPTY)
    {
      YYDPRINTF ((stderr, "Reading a token: "));
      yychar = YYLEX;
    }

  /* Convert token to internal form (in yychar1) for indexing tables with */

  if (yychar <= 0)		/* This means end of input. */
    {
      yychar1 = 0;
      yychar = YYEOF;		/* Don't call YYLEX any more */

      YYDPRINTF ((stderr, "Now at end of input.\n"));
    }
  else
    {
      yychar1 = YYTRANSLATE (yychar);

#if YYDEBUG
     /* We have to keep this `#if YYDEBUG', since we use variables
	which are defined only if `YYDEBUG' is set.  */
      if (yydebug)
	{
	  YYFPRINTF (stderr, "Next token is %d (%s",
		     yychar, yytname[yychar1]);
	  /* Give the individual parser a way to print the precise
	     meaning of a token, for further debugging info.  */
# ifdef YYPRINT
	  YYPRINT (stderr, yychar, yylval);
# endif
	  YYFPRINTF (stderr, ")\n");
	}
#endif
    }

  yyn += yychar1;
  if (yyn < 0 || yyn > YYLAST || yycheck[yyn] != yychar1)
    goto yydefault;

  yyn = yytable[yyn];

  /* yyn is what to do for this token type in this state.
     Negative => reduce, -yyn is rule number.
     Positive => shift, yyn is new state.
       New state is final state => don't bother to shift,
       just return success.
     0, or most negative number => error.  */

  if (yyn < 0)
    {
      if (yyn == YYFLAG)
	goto yyerrlab;
      yyn = -yyn;
      goto yyreduce;
    }
  else if (yyn == 0)
    goto yyerrlab;

  if (yyn == YYFINAL)
    YYACCEPT;

  /* Shift the lookahead token.  */
  YYDPRINTF ((stderr, "Shifting token %d (%s), ",
	      yychar, yytname[yychar1]));

  /* Discard the token being shifted unless it is eof.  */
  if (yychar != YYEOF)
    yychar = YYEMPTY;

  *++yyvsp = yylval;
#if YYLSP_NEEDED
  *++yylsp = yylloc;
#endif

  /* Count tokens shifted since error; after three, turn off error
     status.  */
  if (yyerrstatus)
    yyerrstatus--;

  yystate = yyn;
  goto yynewstate;


/*-----------------------------------------------------------.
| yydefault -- do the default action for the current state.  |
`-----------------------------------------------------------*/
yydefault:
  yyn = yydefact[yystate];
  if (yyn == 0)
    goto yyerrlab;
  goto yyreduce;


/*-----------------------------.
| yyreduce -- Do a reduction.  |
`-----------------------------*/
yyreduce:
  /* yyn is the number of a rule to reduce with.  */
  yylen = yyr2[yyn];

  /* If YYLEN is nonzero, implement the default value of the action:
     `$$ = $1'.

     Otherwise, the following line sets YYVAL to the semantic value of
     the lookahead token.  This behavior is undocumented and Bison
     users should not rely upon it.  Assigning to YYVAL
     unconditionally makes the parser a bit smaller, and it avoids a
     GCC warning that YYVAL may be used uninitialized.  */
  yyval = yyvsp[1-yylen];

#if YYLSP_NEEDED
  /* Similarly for the default location.  Let the user run additional
     commands if for instance locations are ranges.  */
  yyloc = yylsp[1-yylen];
  YYLLOC_DEFAULT (yyloc, (yylsp - yylen), yylen);
#endif

#if YYDEBUG
  /* We have to keep this `#if YYDEBUG', since we use variables which
     are defined only if `YYDEBUG' is set.  */
  if (yydebug)
    {
      int yyi;

      YYFPRINTF (stderr, "Reducing via rule %d (line %d), ",
		 yyn, yyrline[yyn]);

      /* Print the symbols being reduced, and their result.  */
      for (yyi = yyprhs[yyn]; yyrhs[yyi] > 0; yyi++)
	YYFPRINTF (stderr, "%s ", yytname[yyrhs[yyi]]);
      YYFPRINTF (stderr, " -> %s\n", yytname[yyr1[yyn]]);
    }
#endif

  switch (yyn) {

case 2:
#line 132 "inform.y"
{ lex_offset = n_strlen(lex_expression); }
    break;
case 3:
#line 134 "inform.y"
{
		strid_t f;
		f = n_file_name_or_prompt(fileusage_Data|fileusage_BinaryMode,
					  filemode_Write, lex_tail());
		w_glk_put_buffer_stream(f, (char *) z_memory, total_size);
		glk_stream_close(f, NULL);
	}
    break;
case 4:
#line 142 "inform.y"
{ parse_new_alias(lex_tail(), FALSE); }
    break;
case 5:
#line 144 "inform.y"
{ parse_new_alias(lex_tail(), TRUE); }
    break;
case 6:
#line 146 "inform.y"
{ remove_alias(lex_tail()); }
    break;
case 7:
#line 148 "inform.y"
{ automap_init(object_count, lex_tail()); }
    break;
case 8:
#line 150 "inform.y"
{ inform_help(); }
    break;
case 9:
#line 152 "inform.y"
{ op_restart(); exit_debugger = TRUE; read_abort = TRUE;  }
    break;
case 10:
#line 154 "inform.y"
{
		if(restoregame()) {
		  exit_debugger = TRUE; read_abort = TRUE;
		  if(zversion <= 3)
		    mop_take_branch();
		  else
		    mop_store_result(2);
		} else {
		  infix_print_string("Restore failed.\n");
		} }
    break;
case 11:
#line 165 "inform.y"
{ zword oldop0 = operand[0]; operand[0] = 4; op_output_stream(); operand[0] = oldop0; }
    break;
case 12:
#line 167 "inform.y"
{ zword oldop0 = operand[0]; operand[0] = neg(4); op_output_stream(); operand[0] = oldop0; }
    break;
case 13:
#line 169 "inform.y"
{ zword oldop0 = operand[0]; operand[0] = 1; op_input_stream(); operand[0] = oldop0; exit_debugger = TRUE; }
    break;
case 14:
#line 171 "inform.y"
{ zword oldop0 = operand[0]; operand[0] = 0; op_input_stream(); operand[0] = oldop0; }
    break;
case 15:
#line 173 "inform.y"
{ z_close(); glk_exit();	}
    break;
case 16:
#line 175 "inform.y"
{
		if(restoreundo()) {
		  read_abort = TRUE; exit_debugger = TRUE;
		} else {
		  infix_print_string("No undo slots.\n");
		} }
    break;
case 17:
#line 182 "inform.y"
{
		if(restoreredo()) {
		  read_abort = TRUE; exit_debugger = TRUE;
		} else {
		  infix_print_string("No redo slots.\n");
		} }
    break;
case 18:
#line 189 "inform.y"
{
		strid_t f;
		f = n_file_name_or_prompt(fileusage_Data|fileusage_BinaryMode,
					  filemode_Read, lex_tail());
		if(f) {
		  kill_infix();
		  init_infix(f);
		} }
    break;
case 19:
#line 198 "inform.y"
{ infix_display(yyvsp[0].val);		}
    break;
case 20:
#line 200 "inform.y"
{ inform_result = yyvsp[0].val;		}
    break;
case 21:
#line 202 "inform.y"
{ infix_auto_display(lex_tail()); }
    break;
case 22:
#line 204 "inform.y"
{ infix_auto_undisplay(yyvsp[0].val.v);	}
    break;
case 23:
#line 206 "inform.y"
{ infix_set_display_enabled(yyvsp[0].val.v, FALSE); }
    break;
case 24:
#line 208 "inform.y"
{ infix_set_display_enabled(yyvsp[0].val.v, TRUE); }
    break;
case 25:
#line 210 "inform.y"
{ infix_move(yyvsp[0].val.v, yyvsp[-2].val.v); 	}
    break;
case 26:
#line 212 "inform.y"
{ infix_object_tree(0);		}
    break;
case 27:
#line 214 "inform.y"
{ infix_object_tree(yyvsp[0].val.v);	}
    break;
case 28:
#line 216 "inform.y"
{
		if(lex_expression[lex_offset])
		  infix_object_find(lex_tail());
	}
    break;
case 29:
#line 221 "inform.y"
{
		z_typed v; v.t = Z_GLOBAL;
		for(v.o = 0; v.o <= 245; v.o++) {
		  const char *name = infix_get_name(v);
		  if(v.o) infix_print_string("; ");
		  if(name) {
		    infix_print_string(name);
		  } else {
		    infix_print_char('G');
		    infix_print_number(v.o);
		  }
		  infix_print_char('=');
		  infix_get_val(&v);
		  infix_print_number(v.v);
		}
		infix_print_char(10);
	}
    break;
case 30:
#line 239 "inform.y"
{
		z_typed v; v.t = Z_GLOBAL;
		for(v.o = 0; v.o <= 245; v.o++) {
		  infix_get_val(&v);
		  if(v.v == yyvsp[0].val.v) {
		    const char *name = infix_get_name(v);
		    if(name) {
		      infix_print_string(name);
		    } else {
		      infix_print_char('G');
		      infix_print_number(v.o);
		    }
		    infix_print_char(10);
		  }
		} }
    break;
case 31:
#line 255 "inform.y"
{ infix_set_attrib(yyvsp[-1].val.v, yyvsp[0].val.v);	}
    break;
case 32:
#line 257 "inform.y"
{ infix_clear_attrib(yyvsp[-2].val.v, yyvsp[0].val.v); }
    break;
case 33:
#line 259 "inform.y"
{ infix_remove(yyvsp[0].val.v);		}
    break;
case 34:
#line 261 "inform.y"
{ PC=yyvsp[0].pcoffset; exit_debugger = TRUE;	}
    break;
case 35:
#line 263 "inform.y"
{ set_step(CONT_GO, 1); }
    break;
case 36:
#line 265 "inform.y"
{ set_step(CONT_GO, 1); infix_set_ignore(cur_break, yyvsp[0].val.v); }
    break;
case 37:
#line 267 "inform.y"
{ set_step(CONT_STEP, 1); }
    break;
case 38:
#line 269 "inform.y"
{ set_step(CONT_STEP, yyvsp[0].val.v); }
    break;
case 39:
#line 271 "inform.y"
{ set_step(CONT_NEXT, 1); }
    break;
case 40:
#line 273 "inform.y"
{ set_step(CONT_NEXT, yyvsp[0].val.v); }
    break;
case 41:
#line 275 "inform.y"
{ set_step(CONT_UNTIL, 1); }
    break;
case 42:
#line 277 "inform.y"
{ set_step(CONT_STEPI, 1); }
    break;
case 43:
#line 279 "inform.y"
{ set_step(CONT_STEPI, yyvsp[0].val.v); }
    break;
case 44:
#line 281 "inform.y"
{ set_step(CONT_NEXTI, 1); }
    break;
case 45:
#line 283 "inform.y"
{ set_step(CONT_NEXTI, yyvsp[0].val.v); }
    break;
case 46:
#line 285 "inform.y"
{ set_step(CONT_FINISH, 1); }
    break;
case 47:
#line 287 "inform.y"
{ infix_set_break(yyvsp[0].pcoffset);	}
    break;
case 48:
#line 289 "inform.y"
{ int n = infix_set_break(yyvsp[-1].pcoffset); infix_set_cond(n, lex_tail()); }
    break;
case 49:
#line 291 "inform.y"
{ infix_set_cond(yyvsp[0].val.v, lex_tail()); }
    break;
case 50:
#line 293 "inform.y"
{ infix_set_ignore(yyvsp[-1].val.v, yyvsp[0].val.v);	}
    break;
case 51:
#line 295 "inform.y"
{ infix_delete_breakpoint(yyvsp[0].val.v); }
    break;
case 52:
#line 297 "inform.y"
{ infix_show_all_breakpoints(); }
    break;
case 53:
#line 299 "inform.y"
{ infix_show_breakpoint(yyvsp[0].val.v);	}
    break;
case 54:
#line 301 "inform.y"
{ infix_set_break_enabled(yyvsp[0].val.v, FALSE); }
    break;
case 55:
#line 303 "inform.y"
{ infix_set_break_enabled(yyvsp[0].val.v, TRUE); }
    break;
case 56:
#line 305 "inform.y"
{ infix_print_string("The current source language is \"inform\".\n"); }
    break;
case 57:
#line 307 "inform.y"
{ infix_print_string("Current source file is "); infix_print_string(cur_file?cur_file->filename:"unknown"); infix_print_string("\nContains "); infix_print_number(cur_file?cur_file->num_lines:0); infix_print_string(" lines.\nSource language is inform.\n"); }
    break;
case 58:
#line 309 "inform.y"
{ infix_print_string("Source files for which symbols have been read in:\n\n"); infix_list_files(); infix_print_char('\n'); }
    break;
case 59:
#line 311 "inform.y"
{ show_copying(); }
    break;
case 60:
#line 313 "inform.y"
{ show_warranty(); }
    break;
case 61:
#line 315 "inform.y"
{ infix_show_frame(infix_selected_frame); }
    break;
case 62:
#line 317 "inform.y"
{ infix_select_frame(yyvsp[0].val.v); infix_show_frame(yyvsp[0].val.v); }
    break;
case 63:
#line 319 "inform.y"
{ infix_select_frame(yyvsp[0].val.v); }
    break;
case 64:
#line 321 "inform.y"
{ infix_select_frame(infix_selected_frame - 1); infix_show_frame(infix_selected_frame); }
    break;
case 65:
#line 323 "inform.y"
{ infix_select_frame(infix_selected_frame - yyvsp[0].val.v); infix_show_frame(infix_selected_frame); }
    break;
case 66:
#line 325 "inform.y"
{ infix_select_frame(infix_selected_frame - 1); }
    break;
case 67:
#line 327 "inform.y"
{ infix_select_frame(infix_selected_frame - yyvsp[0].val.v); }
    break;
case 68:
#line 329 "inform.y"
{ infix_select_frame(infix_selected_frame + 1); infix_show_frame(infix_selected_frame); }
    break;
case 69:
#line 331 "inform.y"
{ infix_select_frame(infix_selected_frame + yyvsp[0].val.v); infix_show_frame(infix_selected_frame); }
    break;
case 70:
#line 333 "inform.y"
{ infix_select_frame(infix_selected_frame + 1); }
    break;
case 71:
#line 335 "inform.y"
{ infix_select_frame(infix_selected_frame + yyvsp[0].val.v); }
    break;
case 72:
#line 337 "inform.y"
{ infix_backtrace(0, stack_get_depth()); }
    break;
case 73:
#line 339 "inform.y"
{ infix_backtrace(stack_get_depth() - yyvsp[0].val.v, yyvsp[0].val.v); }
    break;
case 74:
#line 341 "inform.y"
{ infix_backtrace(0, yyvsp[0].val.v); }
    break;
case 75:
#line 349 "inform.y"
{ if(yyvsp[0].val.t == Z_ROUTINE) yyval.pcoffset = infix_get_routine_PC(yyvsp[0].val.v); else { infix_location l; infix_decode_fileloc(&l, cur_file?cur_file->filename:"", yyvsp[0].val.v); yyval.pcoffset = l.thisPC; } }
    break;
case 76:
#line 350 "inform.y"
{ infix_location l; infix_decode_fileloc(&l, cur_file?cur_file->filename:"", cur_line + yyvsp[0].val.v); yyval.pcoffset = l.thisPC; }
    break;
case 77:
#line 351 "inform.y"
{ infix_location l; infix_decode_fileloc(&l, cur_file?cur_file->filename:"", cur_line - yyvsp[0].val.v); yyval.pcoffset = l.thisPC; }
    break;
case 78:
#line 352 "inform.y"
{ if(yyvsp[0].val.t == Z_ROUTINE) yyval.pcoffset = UNPACKR(yyvsp[0].val.v); else { infix_location l; infix_decode_fileloc(&l, yyvsp[-2].filenum->filename, yyvsp[0].val.v); yyval.pcoffset = l.thisPC; } }
    break;
case 79:
#line 353 "inform.y"
{ yyval.pcoffset = yyvsp[0].val.v;			}
    break;
case 80:
#line 357 "inform.y"
{
		if(condlist->condfunc(condlist->val, yyvsp[0].val.v) ^ condlist->opposite) {
		   yyval.flag = TRUE;
		   ignoreeffects++;
		} else
		   yyval.flag = FALSE;
	    }
    break;
case 81:
#line 364 "inform.y"
{
		if(yyvsp[-2].flag)
		  yyval.flag = TRUE;
		else {
		  if(condlist->condfunc(condlist->val, yyvsp[0].val.v) ^ condlist->opposite) {
		    yyval.flag = TRUE;
		    ignoreeffects++;
		  }
		  else yyval.flag = FALSE;
		} }
    break;
case 82:
#line 377 "inform.y"
{ yyval.zlist = NULL; }
    break;
case 83:
#line 378 "inform.y"
{ zword_list g; yyval.zlist = yyvsp[0].zlist; g.item = yyvsp[-2].val.v; LEaddm(yyval.zlist, g, n_rmmalloc); }
    break;
case 86:
#line 384 "inform.y"
{ yyval.val = yyvsp[0].val;			}
    break;
case 87:
#line 385 "inform.y"
{ yyval.val = yyvsp[0].val;			}
    break;
case 88:
#line 390 "inform.y"
{ cond_list newcond; newcond.val = yyvsp[-1].val.v; newcond.condfunc = yyvsp[0].cond.condfunc; newcond.opposite = yyvsp[0].cond.opposite; LEaddm(condlist, newcond, n_rmmalloc); }
    break;
case 89:
#line 390 "inform.y"
{ if(yyvsp[0].flag) ignoreeffects--; yyval.val.v = yyvsp[0].flag; yyval.val.t = Z_BOOLEAN; LEremovem(condlist, n_rmfreeone); }
    break;
case 90:
#line 395 "inform.y"
{ yyval.val = yyvsp[0].val;				}
    break;
case 91:
#line 397 "inform.y"
{ yyval.val.v = 0; yyval.val.t = Z_BOOLEAN;		}
    break;
case 92:
#line 399 "inform.y"
{ yyval.val.v = 1; yyval.val.t = Z_BOOLEAN;		}
    break;
case 93:
#line 401 "inform.y"
{ yyval.val.v = 0; yyval.val.t = Z_OBJECT;		}
    break;
case 94:
#line 404 "inform.y"
{ yyval.val = yyvsp[0].val; infix_assign(&yyvsp[-2].val, yyvsp[0].val.v);	}
    break;
case 95:
#line 407 "inform.y"
{ yyval.val.v = infix_parent(yyvsp[-1].val.v); yyval.val.t = Z_OBJECT; }
    break;
case 96:
#line 409 "inform.y"
{ yyval.val.v = infix_child(yyvsp[-1].val.v); yyval.val.t = Z_OBJECT; }
    break;
case 97:
#line 411 "inform.y"
{ yyval.val.v = infix_sibling(yyvsp[-1].val.v); yyval.val.t = Z_OBJECT; }
    break;
case 98:
#line 413 "inform.y"
{ int n = 0; zword o = infix_child(yyvsp[-1].val.v); while(o) { n++; o = infix_sibling(o); } yyval.val.v = n; yyval.val.t = Z_NUMBER; }
    break;
case 99:
#line 416 "inform.y"
{
		  if(!ignoreeffects) {
		    yyval.val.v = z_random(yyvsp[-1].val.v);
		    yyval.val.t = Z_NUMBER;
		  } else {
		    yyval.val.v = 0;
		    yyval.val.t = Z_UNKNOWN;
		  }
		}
    break;
case 100:
#line 426 "inform.y"
{
		zword locals[16];
		int i = 0;
		zword_list *p;
		if(!ignoreeffects) {
		  for(p = yyvsp[-1].zlist; p && i < 16; p=p->next) {
		    locals[i++] = p->item;
		  }
		  mop_call(yyvsp[-3].val.v, i, locals, -2);
		  decode();
		  exit_decoder = FALSE;
		  yyval.val.v = time_ret; yyval.val.t = Z_UNKNOWN;
		} else {
		  yyval.val.v = 0; yyval.val.t = Z_UNKNOWN;
		}
	      }
    break;
case 101:
#line 443 "inform.y"
{ if(yyvsp[-1].val.v == 0) ignoreeffects++; }
    break;
case 102:
#line 444 "inform.y"
{ if(yyvsp[-3].val.v == 0) ignoreeffects--; yyval.val = z_t(yyvsp[-3].val, yyvsp[0].val, yyvsp[-3].val.v && yyvsp[0].val.v);	}
    break;
case 103:
#line 445 "inform.y"
{ if(yyvsp[-1].val.v != 0) ignoreeffects++; }
    break;
case 104:
#line 446 "inform.y"
{ if(yyvsp[-3].val.v != 0) ignoreeffects--; yyval.val = z_t(yyvsp[-3].val, yyvsp[0].val, yyvsp[-3].val.v || yyvsp[0].val.v);	}
    break;
case 105:
#line 448 "inform.y"
{ yyval.val.v = !(yyvsp[0].val.v); yyval.val.t = Z_NUMBER;	}
    break;
case 106:
#line 451 "inform.y"
{ yyval.val = z_t(yyvsp[-2].val, yyvsp[0].val, yyvsp[-2].val.v + yyvsp[0].val.v);	}
    break;
case 107:
#line 453 "inform.y"
{ yyval.val = z_t(yyvsp[-2].val, yyvsp[0].val, yyvsp[-2].val.v + neg(yyvsp[0].val.v));	}
    break;
case 108:
#line 455 "inform.y"
{ yyval.val = z_t(yyvsp[-2].val, yyvsp[0].val, z_mult(yyvsp[-2].val.v, yyvsp[0].val.v));	}
    break;
case 109:
#line 457 "inform.y"
{ yyval.val = z_t(yyvsp[-2].val, yyvsp[0].val, z_div(yyvsp[-2].val.v, yyvsp[0].val.v));	}
    break;
case 110:
#line 459 "inform.y"
{ yyval.val = z_t(yyvsp[-2].val, yyvsp[0].val, z_mod(yyvsp[-2].val.v, yyvsp[0].val.v));	}
    break;
case 111:
#line 461 "inform.y"
{ yyval.val = z_t(yyvsp[-2].val, yyvsp[0].val, yyvsp[-2].val.v & yyvsp[0].val.v);	}
    break;
case 112:
#line 463 "inform.y"
{ yyval.val = z_t(yyvsp[-2].val, yyvsp[0].val, yyvsp[-2].val.v | yyvsp[0].val.v);	}
    break;
case 113:
#line 465 "inform.y"
{ yyval.val = z_t(yyvsp[0].val, yyvsp[0].val, ~yyvsp[0].val.v);		}
    break;
case 114:
#line 468 "inform.y"
{ yyval.val.t = Z_BYTEARRAY; yyval.val.o = yyvsp[-2].val.v; yyval.val.p = yyvsp[0].val.v; infix_get_val(&yyval.val); }
    break;
case 115:
#line 470 "inform.y"
{ yyval.val.t = Z_WORDARRAY; yyval.val.o = yyvsp[-2].val.v; yyval.val.p = yyvsp[0].val.v; infix_get_val(&yyval.val);	}
    break;
case 116:
#line 473 "inform.y"
{ yyval.val = z_t(yyvsp[0].val, yyvsp[0].val, neg(yyvsp[0].val.v));		}
    break;
case 117:
#line 476 "inform.y"
{ if(!ignoreeffects) infix_assign(&yyvsp[0].val, ARITHMASK(yyvsp[0].val.v + 1)); yyval.val = yyvsp[0].val; }
    break;
case 118:
#line 478 "inform.y"
{ yyval.val = yyvsp[-1].val; if(!ignoreeffects) infix_assign(&yyvsp[-1].val, ARITHMASK(yyvsp[-1].val.v + 1)); }
    break;
case 119:
#line 480 "inform.y"
{ if(!ignoreeffects) infix_assign(&yyvsp[0].val, ARITHMASK(yyvsp[0].val.v + neg(1))); yyval.val = yyvsp[0].val; }
    break;
case 120:
#line 482 "inform.y"
{ yyval.val = yyvsp[-1].val; if(!ignoreeffects) infix_assign(&yyvsp[-1].val, ARITHMASK(yyvsp[-1].val.v + neg(1))); }
    break;
case 121:
#line 485 "inform.y"
{ zword len; yyval.val.v = infix_get_proptable(yyvsp[-2].val.v, yyvsp[0].val.v, &len); yyval.val.t = Z_NUMBER; }
    break;
case 122:
#line 487 "inform.y"
{ infix_get_proptable(yyvsp[-2].val.v, yyvsp[0].val.v, &yyval.val.v); yyval.val.t = Z_NUMBER; }
    break;
case 123:
#line 490 "inform.y"
{ yyval.val.t = Z_OBJPROP; yyval.val.o = yyvsp[-2].val.v; yyval.val.p = yyvsp[0].val.v; infix_get_val(&yyval.val); }
    break;
case 124:
#line 498 "inform.y"
{ yyval.val.v = yyvsp[0].val.v; yyval.val.t = Z_NUMBER;		}
    break;
case 125:
#line 500 "inform.y"
{ yyval.val.v = yyvsp[0].val.v; yyval.val.t = Z_OBJECT;		}
    break;
case 126:
#line 502 "inform.y"
{ yyval.val.v = yyvsp[0].val.v; yyval.val.t = Z_ROUTINE;	}
    break;
case 127:
#line 504 "inform.y"
{ yyval.val.v = yyvsp[0].val.v; yyval.val.t = Z_STRING;		}
    break;
case 128:
#line 506 "inform.y"
{ yyval.val.t = Z_WORDARRAY; yyval.val.o = z_globaltable; yyval.val.p = yyvsp[0].val.v; infix_get_val(&yyval.val); }
    break;
case 129:
#line 508 "inform.y"
{ yyval.val.t = Z_LOCAL; yyval.val.o = infix_selected_frame; yyval.val.p = yyvsp[0].val.v; infix_get_val(&yyval.val); }
    break;
case 130:
#line 510 "inform.y"
{ yyval.val = yyvsp[-1].val;				}
    break;
}

#line 705 "/usr/share/bison/bison.simple"


  yyvsp -= yylen;
  yyssp -= yylen;
#if YYLSP_NEEDED
  yylsp -= yylen;
#endif

#if YYDEBUG
  if (yydebug)
    {
      short *yyssp1 = yyss - 1;
      YYFPRINTF (stderr, "state stack now");
      while (yyssp1 != yyssp)
	YYFPRINTF (stderr, " %d", *++yyssp1);
      YYFPRINTF (stderr, "\n");
    }
#endif

  *++yyvsp = yyval;
#if YYLSP_NEEDED
  *++yylsp = yyloc;
#endif

  /* Now `shift' the result of the reduction.  Determine what state
     that goes to, based on the state we popped back to and the rule
     number reduced by.  */

  yyn = yyr1[yyn];

  yystate = yypgoto[yyn - YYNTBASE] + *yyssp;
  if (yystate >= 0 && yystate <= YYLAST && yycheck[yystate] == *yyssp)
    yystate = yytable[yystate];
  else
    yystate = yydefgoto[yyn - YYNTBASE];

  goto yynewstate;


/*------------------------------------.
| yyerrlab -- here on detecting error |
`------------------------------------*/
yyerrlab:
  /* If not already recovering from an error, report this error.  */
  if (!yyerrstatus)
    {
      ++yynerrs;

#ifdef YYERROR_VERBOSE
      yyn = yypact[yystate];

      if (yyn > YYFLAG && yyn < YYLAST)
	{
	  YYSIZE_T yysize = 0;
	  char *yymsg;
	  int yyx, yycount;

	  yycount = 0;
	  /* Start YYX at -YYN if negative to avoid negative indexes in
	     YYCHECK.  */
	  for (yyx = yyn < 0 ? -yyn : 0;
	       yyx < (int) (sizeof (yytname) / sizeof (char *)); yyx++)
	    if (yycheck[yyx + yyn] == yyx)
	      yysize += yystrlen (yytname[yyx]) + 15, yycount++;
	  yysize += yystrlen ("parse error, unexpected ") + 1;
	  yysize += yystrlen (yytname[YYTRANSLATE (yychar)]);
	  yymsg = (char *) YYSTACK_ALLOC (yysize);
	  if (yymsg != 0)
	    {
	      char *yyp = yystpcpy (yymsg, "parse error, unexpected ");
	      yyp = yystpcpy (yyp, yytname[YYTRANSLATE (yychar)]);

	      if (yycount < 5)
		{
		  yycount = 0;
		  for (yyx = yyn < 0 ? -yyn : 0;
		       yyx < (int) (sizeof (yytname) / sizeof (char *));
		       yyx++)
		    if (yycheck[yyx + yyn] == yyx)
		      {
			const char *yyq = ! yycount ? ", expecting " : " or ";
			yyp = yystpcpy (yyp, yyq);
			yyp = yystpcpy (yyp, yytname[yyx]);
			yycount++;
		      }
		}
	      yyerror (yymsg);
	      YYSTACK_FREE (yymsg);
	    }
	  else
	    yyerror ("parse error; also virtual memory exhausted");
	}
      else
#endif /* defined (YYERROR_VERBOSE) */
	yyerror ("parse error");
    }
  goto yyerrlab1;


/*--------------------------------------------------.
| yyerrlab1 -- error raised explicitly by an action |
`--------------------------------------------------*/
yyerrlab1:
  if (yyerrstatus == 3)
    {
      /* If just tried and failed to reuse lookahead token after an
	 error, discard it.  */

      /* return failure if at end of input */
      if (yychar == YYEOF)
	YYABORT;
      YYDPRINTF ((stderr, "Discarding token %d (%s).\n",
		  yychar, yytname[yychar1]));
      yychar = YYEMPTY;
    }

  /* Else will try to reuse lookahead token after shifting the error
     token.  */

  yyerrstatus = 3;		/* Each real token shifted decrements this */

  goto yyerrhandle;


/*-------------------------------------------------------------------.
| yyerrdefault -- current state does not do anything special for the |
| error token.                                                       |
`-------------------------------------------------------------------*/
yyerrdefault:
#if 0
  /* This is wrong; only states that explicitly want error tokens
     should shift them.  */

  /* If its default is to accept any token, ok.  Otherwise pop it.  */
  yyn = yydefact[yystate];
  if (yyn)
    goto yydefault;
#endif


/*---------------------------------------------------------------.
| yyerrpop -- pop the current state because it cannot handle the |
| error token                                                    |
`---------------------------------------------------------------*/
yyerrpop:
  if (yyssp == yyss)
    YYABORT;
  yyvsp--;
  yystate = *--yyssp;
#if YYLSP_NEEDED
  yylsp--;
#endif

#if YYDEBUG
  if (yydebug)
    {
      short *yyssp1 = yyss - 1;
      YYFPRINTF (stderr, "Error: state stack now");
      while (yyssp1 != yyssp)
	YYFPRINTF (stderr, " %d", *++yyssp1);
      YYFPRINTF (stderr, "\n");
    }
#endif

/*--------------.
| yyerrhandle.  |
`--------------*/
yyerrhandle:
  yyn = yypact[yystate];
  if (yyn == YYFLAG)
    goto yyerrdefault;

  yyn += YYTERROR;
  if (yyn < 0 || yyn > YYLAST || yycheck[yyn] != YYTERROR)
    goto yyerrdefault;

  yyn = yytable[yyn];
  if (yyn < 0)
    {
      if (yyn == YYFLAG)
	goto yyerrpop;
      yyn = -yyn;
      goto yyreduce;
    }
  else if (yyn == 0)
    goto yyerrpop;

  if (yyn == YYFINAL)
    YYACCEPT;

  YYDPRINTF ((stderr, "Shifting error token, "));

  *++yyvsp = yylval;
#if YYLSP_NEEDED
  *++yylsp = yylloc;
#endif

  yystate = yyn;
  goto yynewstate;


/*-------------------------------------.
| yyacceptlab -- YYACCEPT comes here.  |
`-------------------------------------*/
yyacceptlab:
  yyresult = 0;
  goto yyreturn;

/*-----------------------------------.
| yyabortlab -- YYABORT comes here.  |
`-----------------------------------*/
yyabortlab:
  yyresult = 1;
  goto yyreturn;

/*---------------------------------------------.
| yyoverflowab -- parser overflow comes here.  |
`---------------------------------------------*/
yyoverflowlab:
  yyerror ("parser stack overflow");
  yyresult = 2;
  /* Fall through.  */

yyreturn:
#ifndef yyoverflow
  if (yyss != yyssa)
    YYSTACK_FREE (yyss);
#endif
  return yyresult;
}
#line 514 "inform.y"


#if 0
{ /* fanagling to get emacs indentation sane */
int foo;
#endif

static z_typed z_t(z_typed a, z_typed b, zword v)
{
  z_typed r;
  r.v = ARITHMASK(v);
  if(a.t == Z_NUMBER && b.t == Z_NUMBER)
    r.t = Z_NUMBER;
  else
    r.t = Z_UNKNOWN;
  return r;
}



typedef struct {
  int token;
  const char *name;
} name_token;

static name_token infix_operators[] = {
  { ANDAND,     "&&" },
  { OROR,       "||" },
  { NOTNOT,     "~~" },
  { BYTEARRAY,  "->" },
  { WORDARRAY,  "-->" },
  { NUMBER,     "(number)" },
  { OBJECT,     "(object)" },
  { ROUTINE,    "(routine)" },
  { STRING,     "(string)" },
  { GLOBAL,     "(global)" },
  { LOCAL,      "(local)" },
  { INCREMENT,  "++" },
  { DECREMENT,  "--" },
  { SUPERCLASS, "::" }
};


static name_token infix_keywords[] = {
  { TO,         "to" },
  { IF,         "if" },
  { OR,         "or" },
  { BTRUE,      "true" },
  { BFALSE,     "false" },
  { NOTHING,    "nothing" },
  { PARENT,     "parent" },
  { CHILD,      "child" },
  { SIBLING,    "sibling" },
  { RANDOM,     "random" },
  { CHILDREN,   "children" }
};


/* These are only valid as the first token in an expression.  A single space
   matches at least one typed whitespace character */
static name_token infix_commands[] = {
  { '#',          "#" },
  { HELP,         "help" },
  { ALIAS,        "alias" },
  { RALIAS,       "ralias" },
  { UNALIAS,      "unalias" },
  { DUMPMEM,      "dumpmem" },
  { AUTOMAP,      "automap" },
  { UNDO,         "undo" },
  { REDO,         "redo" },
  { QUIT,         "quit" },
  { RESTORE,      "restore" },
  { RESTART,      "restart" },
  { RESTART,      "run" },
  { RECORDON,	  "recording on" },
  { RECORDOFF,    "recording off" },
  { REPLAY,       "replay" },
  { REPLAYOFF,    "replay off" },
  { SYMBOL_FILE,  "symbol-file" },
  { PRINT,        "print" },
  { PRINT,        "p" },
  { PRINT,        "call" },  /* No void functions in inform */
  { SET,          "set" },
  { MOVE,         "move" },
  { OBJECT_TREE,  "object-tree" },
  { OBJECT_TREE,  "tree" },
  { FIND,         "find" },
  { REMOVE,       "remove" },
  { GIVE,         "give" },
  { LIST_GLOBALS, "globals" },
  { JUMP,         "jump" },
  { CONT,         "continue" },
  { CONT,         "c" },
  { CONT,         "fg" },
  { STEP,         "step" },
  { STEP,         "s" },
  { NEXT,         "next" },
  { NEXT,         "n" },
  { STEPI,        "stepi" },
  { STEPI,        "si" },
  { NEXTI,        "nexti" },
  { NEXTI,        "ni" },
  { UNTIL,        "until" },
  { UNTIL,        "u" },
  { FINISH,       "finish" },
  { BREAK,        "break" },
  { DELETE,       "delete" },
  { DELETE,       "d" },
  { DELETE,       "delete breakpoints" },
  { COND,         "condition" },
  { IGNORE,       "ignore" },
  { FRAME,        "frame" },
  { FRAME,        "f" },
  { SELECT_FRAME, "select-frame" },
  { UP_FRAME,     "up" },
  { DOWN_FRAME,   "down" },
  { DOWN_FRAME,   "do" },
  { UP_SILENTLY,  "up-silently" },
  { DOWN_SILENTLY,"down-silently" },
  { BREAKPOINTS,  "info breakpoints" },
  { BREAKPOINTS,  "info watchpoints" },
  { BREAKPOINTS,  "info break" },
  { DISABLE_BREAK,"disable" },
  { DISABLE_BREAK,"disable breakpoints" },
  { DISABLE_BREAK,"dis" },
  { DISABLE_BREAK,"dis breakpoints" },
  { ENABLE_BREAK, "enable" },
  { ENABLE_BREAK, "enable breakpoints" },
  { LANGUAGE,     "show language" },
  { INFOSOURCE,   "info source" },
  { INFOSOURCES,  "info sources" },
  { COPYING,      "show copying" },
  { WARRANTY,     "show warranty" },
  { BACKTRACE,    "backtrace" },
  { BACKTRACE,    "bt" },
  { BACKTRACE,    "where" },
  { BACKTRACE,    "info stack" },
  { BACKTRACE,    "info s" },
  { DISPLAY,      "display" },
  { UNDISPLAY,    "undisplay" },
  { UNDISPLAY,    "delete display" },
  { DISABLE_DISPLAY,"disable display" },
  { DISABLE_DISPLAY,"dis display" },
  { ENABLE_DISPLAY,"enable display" }
};

#include "dbg_help.h"

static BOOL z_isequal(zword a, zword b)
{
  return (a == b);
}

static BOOL z_isgreat(zword a, zword b)
{
  return is_greaterthan(a, b);
}

static BOOL z_isless(zword a, zword b)
{
  return is_lessthan(a, b);
}

static BOOL infix_provides(zword o, zword p)
{
  zword len;
  return (infix_get_proptable(o, p, &len) != 0);
}

static BOOL infix_in(zword a, zword b)
{
  return infix_parent(a) == b;
}

typedef struct {
  const char *name;
  BOOL (*condfunc)(zword a, zword b);
  BOOL opposite;
} condition;

condition conditionlist[] = {
  { "==",      z_isequal,         FALSE },
  { "~=",      z_isequal,         TRUE },
  { ">",       z_isgreat,         FALSE },
  { "<",       z_isless,          FALSE },
  { "<=",      z_isgreat,         TRUE },
  { ">=",      z_isless,          TRUE },
  { "has",     infix_test_attrib, FALSE },
  { "hasnt",   infix_test_attrib, TRUE },
  { "in",      infix_in,          FALSE },
  { "notin",   infix_in,          TRUE },
/*{ "ofclass", infix_ofclass,     FALSE },*/
  { "provides",infix_provides,    FALSE }
};


static BOOL is_command_identifier(char c)
{
  return isalpha(c) || (c == '-');
}

static BOOL is_identifier(char c)
{
  return isalpha(c) || isdigit(c) || (c == '_');
}

static BOOL is_longer_identifier(char c)
{
  return isalpha(c) || isdigit(c) || (c == '_') || (c == '.') || (c == ':');
}

static int grab_number(z_typed *val)
{
  int len = 0;
  char *endptr;
  char c = lex_expression[lex_offset + len];
  int base = 10;
  long int num;

  /* Don't handle negativity here */
  if(c == '-' || c == '+')
    return 0;
  
  if(c == '$') {
    len++;
    base = 16;
    c = lex_expression[lex_offset + len];
    if(c == '$') {
      len++;
      base = 2;
      c = lex_expression[lex_offset + len];
    }
  }
  
  num = n_strtol(lex_expression + lex_offset + len, &endptr, base);

  if(endptr != lex_expression + lex_offset) {
    len += endptr - lex_expression - lex_offset;
    val->v = num;
    val->t = Z_NUMBER;
    return len;
  }
  return 0;
}


typedef enum { match_None, match_Partial, match_Complete } match_type;

static match_type command_matches(const char *command, const char *expression,
				  unsigned *matchedlen)
{
  unsigned c, e;
  e = 0;

  for(c = 0; command[c]; c++) {
    if(command[c] != expression[e]) {
      if(!is_command_identifier(expression[e])) {
	*matchedlen = e;
	return match_Partial;
      }
      return match_None;
    }

    e++;
    
    if(command[c] == ' ') {
      while(expression[e] == ' ')
	e++;
    }
  }

  if(!is_command_identifier(expression[e])) {
    *matchedlen = e;
    return match_Complete; 
  }

  return match_None;
}


static int grab_command(void)
{
  unsigned i;
  unsigned len;

  unsigned best;
  match_type best_match = match_None;
  unsigned best_len = 0;
  BOOL found = FALSE;
  BOOL ambig = FALSE;

  while(isspace(lex_expression[lex_offset]))
    lex_offset++;

  for(i = 0; i < sizeof(infix_commands) / sizeof(*infix_commands); i++) {
    switch(command_matches(infix_commands[i].name, lex_expression + lex_offset, &len)) {
    case match_Complete:
      if(len > best_len || best_match != match_Complete) {
	best = i;
	best_match = match_Complete;
	best_len = len;
	found = TRUE;
      }
      break;

    case match_Partial:
      if(best_match != match_Complete) {
	if(found)
	  ambig = TRUE;
	best = i;
	best_match = match_Partial;
	best_len = len;
	found = TRUE;
      }

    case match_None:
      ;
    }
  }

  if(ambig && best_match != match_Complete) {
    infix_print_string("Ambiguous command.\n");
    return 0;
  }

  if(found) {
    lex_offset += best_len;
    return infix_commands[best].token;
  }

  infix_print_string("Undefined command.\n");
  return 0;
}


static void inform_help(void)
{
  int command;
  unsigned i;
  BOOL is_command = FALSE;
  
  for(i = lex_offset; lex_expression[i]; i++)
    if(!isspace(lex_expression[i]))
      is_command = TRUE;

  if(!is_command) {
    infix_print_string("Help is available on the following commands:\n");
    for(i = 0; i < sizeof(command_help) / sizeof(*command_help); i++) {
      unsigned j;
      for(j = 0; j < sizeof(infix_commands) / sizeof(*infix_commands); j++)
	if(command_help[i].token == infix_commands[j].token) {
	  infix_print_char('\'');
	  infix_print_string(infix_commands[j].name);
	  infix_print_char('\'');
	  break;
	}
      infix_print_char(' ');
    }
    infix_print_string("\n");
    return;
  }
  
  command = grab_command();
  if(command) {
    for(i = 0; i < sizeof(command_help) / sizeof(*command_help); i++) {
      if(command_help[i].token == command) {
	infix_print_string(command_help[i].name);
	infix_print_char(10);
	return;
      }
    }
    infix_print_string("No help available for that command.\n");
  }
}


void process_debug_command(const char *buffer)
{
#if YYDEBUG
  yydebug = 1;
#endif
  lex_expression = buffer;
  lex_offset = 0;
  ignoreeffects = 0;
  yyparse();
  n_rmfree();
}

BOOL exp_has_locals(const char *exp)
{
  return FALSE;
}

z_typed evaluate_expression(const char *exp, unsigned frame)
{
  unsigned old_frame = infix_selected_frame;
  char *new_exp = (char *) n_malloc(n_strlen(exp) + 5);
  n_strcpy(new_exp, "set ");
  n_strcat(new_exp, exp);

  infix_selected_frame = frame;
  process_debug_command(new_exp);
  infix_selected_frame = old_frame;

  n_free(new_exp);

  return inform_result;
}

static void yyerror(const char *s)
{
  infix_print_string(s);
  infix_print_char(10);
}

static int yylex(void)
{
  unsigned i, len, longer;
  BOOL check_command = FALSE;

  if(lex_offset == 0)
    check_command = TRUE;

  while(isspace(lex_expression[lex_offset]))
    lex_offset++;

  if(check_command) {
    return grab_command();
  }

  if((len = grab_number(&yylval.val)) != 0) {
    lex_offset += len;
    return NUM;
  }

  for(i = 0; i < sizeof(infix_operators) / sizeof(*infix_operators); i++) {
    if(n_strncmp(infix_operators[i].name, lex_expression + lex_offset,
	       n_strlen(infix_operators[i].name)) == 0) {
      lex_offset += n_strlen(infix_operators[i].name);
      return infix_operators[i].token;
    }
  }

  for(i = 0; i < sizeof(conditionlist) / sizeof(*conditionlist); i++) {
    len = n_strlen(conditionlist[i].name);
    if(len
       && n_strncmp(conditionlist[i].name,
		   lex_expression + lex_offset, len) == 0
       && !(is_identifier(conditionlist[i].name[len-1])
	    && is_identifier(lex_expression[lex_offset + len]))) {

      lex_offset += len;
      yylval.cond.condfunc = conditionlist[i].condfunc;
      yylval.cond.opposite = conditionlist[i].opposite;
      return CONDITION;
    }
  }

  if((len = infix_find_file(&yylval.filenum, lex_expression + lex_offset)) != 0) {
    lex_offset += len;
    return DFILE;
  }


  for(len = 0; is_identifier(lex_expression[lex_offset + len]); len++)
    ;

  if(!len)
    return lex_expression[lex_offset++];

  for(i = 0; i < sizeof(infix_keywords) / sizeof(*infix_keywords); i++) {
    if(n_strmatch(infix_keywords[i].name, lex_expression + lex_offset, len)) {
      lex_offset += len;
      return infix_keywords[i].token;
    }
  }

  for(longer = len; is_longer_identifier(lex_expression[lex_offset + longer]); longer++)
    ;

  if(infix_find_symbol(&yylval.val, lex_expression + lex_offset, longer)) {
    lex_offset += longer;
    return NUM;
  }

  if(infix_find_symbol(&yylval.val, lex_expression + lex_offset, len)) {
    lex_offset += len;
    return NUM;
  }

  infix_print_string("Unknown identifier \"");
  for(i = 0; i < len; i++)
    infix_print_char(lex_expression[lex_offset + i]);
  infix_print_string("\"\n");

  return 0;
}

#endif /* DEBUGGING */
