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MushcoreBison.cpp

//%Header {
/*****************************************************************************
 *
 * File: src/Mushcore/MushcoreBison.cpp
 *
 * Author: Andy Southgate 2002-2007
 *
 * This file contains original work by Andy Southgate.  The author and his
 * employer (Mushware Limited) irrevocably waive all of their copyright rights
 * vested in this particular version of this file to the furthest extent
 * permitted.  The author and Mushware Limited also irrevocably waive any and
 * all of their intellectual property rights arising from said file and its
 * creation that would otherwise restrict the rights of any party to use and/or
 * distribute the use of, the techniques and methods used herein.  A written
 * waiver can be obtained via http://www.mushware.com/.
 *
 * This software carries NO WARRANTY of any kind.
 *
 ****************************************************************************/
//%Header } Gj4fVgSMj6vInuAtCnV36g

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

#define yyparse MushcoreBison_parse
#define yylex MushcoreBison_lex
#define yyerror MushcoreBison_error
#define yylval MushcoreBison_lval
#define yychar MushcoreBison_char
#define yydebug MushcoreBison_debug
#define yynerrs MushcoreBison_nerrs
#define     NUMBER      257
#define     VARIABLE    258
#define     IDENTIFIER  259
#define     STRING      260
#define     EOS   261
#define     END_OF_FILE 262
#define     NEG   263

 /*
 * $Id: MushcoreBison.cpp,v 1.16 2007/04/18 09:23:07 southa Exp $
 * $Log: MushcoreBison.cpp,v $
 * Revision 1.16  2007/04/18 09:23:07  southa
 * Header and level fixes
 *
 * Revision 1.15  2006/06/01 15:39:41  southa
 * DrawArray verification and fixes
 *
 * Revision 1.14  2005/05/19 13:02:14  southa
 * Mac release work
 *
 * Revision 1.13  2004/01/02 21:13:12  southa
 * Source conditioning
 *
 * Revision 1.12  2003/10/04 12:23:08  southa
 * File renaming
 *
 * Revision 1.11  2003/09/17 19:40:34  southa
 * Source conditioning upgrades
 *
 * Revision 1.10  2003/08/21 23:09:05  southa
 * Fixed file headers
 *
 * Revision 1.8  2003/02/04 00:11:04  southa
 * Build fixes
 *
 * Revision 1.7  2003/01/20 17:03:21  southa
 * Command line expression evaluator enhancements
 *
 * Revision 1.6  2003/01/20 15:38:28  southa
 * Created MushcoreTest
 *
 * Revision 1.5  2003/01/20 10:45:28  southa
 * Singleton tidying
 *
 * Revision 1.4  2003/01/18 13:33:57  southa
 * Created MushcoreSingleton
 *
 * Revision 1.3  2003/01/14 20:46:10  southa
 * Post data handling
 *
 * Revision 1.2  2003/01/12 17:32:58  southa
 * Mushcore work
 *
 * Revision 1.1  2003/01/09 14:57:05  southa
 * Created Mushcore
 *
 * Revision 1.10  2002/12/29 20:59:51  southa
 * More build fixes
 *
 * Revision 1.9  2002/06/04 22:50:02  southa
 * Fixes to mac project
 *
 * Revision 1.8  2002/05/30 14:41:13  southa
 * InfernalData and loadtilemap command
 *
 */

/*****************************************************************************
 *
 *  MushcoreBison.cpp is autogenerated from the file MushcoreBison.y.
 *  Please edit that file in preference to MushcoreBison.cpp.
 *
 ****************************************************************************/
    
#include "MushcoreBison.h"
#include "MushcoreCommand.h"
#include "MushcoreEnv.h"

#include "MushcoreSTL.h"
    
#define YYSTYPE MushcoreScalar
#define YYPARSE_PARAM inBison
#define YYLEX_PARAM inBison
#define INBISON (static_cast<MushcoreBison *>(inBison))
#define MushcoreBison_lex INBISON->Lex
#define YYDEBUG 1
#define YYERROR_VERBOSE 1

using namespace std;
    
int yyerror( char *s);
#ifndef YYSTYPE
#define YYSTYPE int
#endif
#ifndef YYDEBUG
#define YYDEBUG 1
#endif

#include <stdio.h>

#ifndef __cplusplus
#ifndef __STDC__
#define const
#endif
#endif



#define     YYFINAL           35
#define     YYFLAG            -32768
#define     YYNTBASE    17

#define YYTRANSLATE(x) ((unsigned)(x) <= 263 ? yytranslate[x] : 25)

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,     2,     2,     2,     2,     2,    14,
    15,    11,     9,    16,    10,     2,    12,     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,     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,    13
};

#if YYDEBUG != 0
static const short yyprhs[] = {     0,
     0,     1,     4,     6,     8,    10,    12,    14,    16,    18,
    22,    26,    30,    34,    37,    41,    43,    44,    46,    50,
    51,    55,    57
};

static const short yyrhs[] = {    -1,
    17,    24,     0,     7,     0,     8,     0,     5,     0,     4,
     0,     4,     0,     6,     0,     3,     0,    20,     9,    20,
     0,    20,    10,    20,     0,    20,    11,    20,     0,    20,
    12,    20,     0,    10,    20,     0,    14,    20,    15,     0,
    20,     0,     0,    21,     0,    22,    16,    21,     0,     0,
    14,    22,    15,     0,    18,     0,    19,    23,    18,     0
};

#endif

#if YYDEBUG != 0
static const short yyrline[] = { 0,
    92,    93,    94,    95,    97,    98,   100,   101,   102,   103,
   104,   105,   106,   107,   108,   110,   114,   115,   116,   118,
   119,   121,   122
};
#endif


#if YYDEBUG != 0 || defined (YYERROR_VERBOSE)

static const char * const yytname[] = {   "$","error","$undefined.","NUMBER",
"VARIABLE","IDENTIFIER","STRING","EOS","END_OF_FILE","'+'","'-'","'*'","'/'",
"NEG","'('","')'","','","input","end","command","scalar","parameter","parameter_list",
"command_tail","statement", NULL
};
#endif

static const short yyr1[] = {     0,
    17,    17,    18,    18,    19,    19,    20,    20,    20,    20,
    20,    20,    20,    20,    20,    21,    22,    22,    22,    23,
    23,    24,    24
};

static const short yyr2[] = {     0,
     0,     2,     1,     1,     1,     1,     1,     1,     1,     3,
     3,     3,     3,     2,     3,     1,     0,     1,     3,     0,
     3,     1,     3
};

static const short yydefact[] = {     1,
     0,     6,     5,     3,     4,    22,    20,     2,    17,     0,
     9,     7,     8,     0,     0,    16,    18,     0,    23,    14,
     0,     0,     0,     0,     0,    21,     0,    15,    10,    11,
    12,    13,    19,     0,     0
};

static const short yydefgoto[] = {     1,
     6,     7,    16,    17,    18,    10,     8
};

static const short yypact[] = {-32768,
    17,-32768,-32768,-32768,-32768,-32768,     0,-32768,     9,    -1,
-32768,-32768,-32768,     9,     9,    -7,-32768,    16,-32768,-32768,
    18,     9,     9,     9,     9,-32768,     9,-32768,    23,    23,
-32768,-32768,-32768,    20,-32768
};

static const short yypgoto[] = {-32768,
     6,-32768,   -14,    -9,-32768,-32768,-32768
};


#define     YYLAST            35


static const short yytable[] = {    20,
    21,    22,    23,    24,    25,     4,     5,    29,    30,    31,
    32,    11,    12,     9,    13,    19,    34,    33,    14,    35,
     2,     3,    15,     4,     5,     0,    22,    23,    24,    25,
    26,    27,    28,    24,    25
};

static const short yycheck[] = {    14,
    15,     9,    10,    11,    12,     7,     8,    22,    23,    24,
    25,     3,     4,    14,     6,    10,     0,    27,    10,     0,
     4,     5,    14,     7,     8,    -1,     9,    10,    11,    12,
    15,    16,    15,    11,    12
};
#define YYPURE 1

/* -*-C-*-  Note some compilers choke on comments on `#line' lines.  */

/* This file comes from bison-1.28.  */

/* Skeleton output parser for bison,
   Copyright (C) 1984, 1989, 1990 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., 59 Temple Place - Suite 330,
   Boston, MA 02111-1307, 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.  */

#ifndef YYSTACK_USE_ALLOCA
#ifdef alloca
#define YYSTACK_USE_ALLOCA
#else /* alloca not defined */
#ifdef __GNUC__
#define YYSTACK_USE_ALLOCA
#define alloca __builtin_alloca
#else /* not GNU C.  */
#if (!defined (__STDC__) && defined (sparc)) || defined (__sparc__) || defined (__sparc) || defined (__sgi) || (defined (__sun) && defined (__i386))
#define YYSTACK_USE_ALLOCA
#include <alloca.h>
#else /* not sparc */
/* We think this test detects Watcom and Microsoft C.  */
/* This used to test MSDOS, but that is a bad idea
   since that symbol is in the user namespace.  */
#if (defined (_MSDOS) || defined (_MSDOS_)) && !defined (__TURBOC__)
#if 0 /* No need for malloc.h, which pollutes the namespace;
       instead, just don't use alloca.  */
#include <malloc.h>
#endif
#else /* not MSDOS, or __TURBOC__ */
#if defined(_AIX)
/* I don't know what this was needed for, but it pollutes the namespace.
   So I turned it off.   rms, 2 May 1997.  */
/* #include <malloc.h>  */
 #pragma alloca
#define YYSTACK_USE_ALLOCA
#else /* not MSDOS, or __TURBOC__, or _AIX */
#if 0
#ifdef __hpux /* haible@ilog.fr says this works for HPUX 9.05 and up,
             and on HPUX 10.  Eventually we can turn this on.  */
#define YYSTACK_USE_ALLOCA
#define alloca __builtin_alloca
#endif /* __hpux */
#endif
#endif /* not _AIX */
#endif /* not MSDOS, or __TURBOC__ */
#endif /* not sparc */
#endif /* not GNU C */
#endif /* alloca not defined */
#endif /* YYSTACK_USE_ALLOCA not defined */

#ifdef YYSTACK_USE_ALLOCA
#define YYSTACK_ALLOC alloca
#else
#define YYSTACK_ALLOC malloc
#endif

/* Note: there must be only one dollar sign in this file.
   It is replaced by the list of actions, each action
   as one case of the switch.  */

#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

#ifndef YYPURE
#define YYLEX           yylex()
#endif

#ifdef YYPURE
#ifdef YYLSP_NEEDED
#ifdef YYLEX_PARAM
#define YYLEX           yylex(&yylval, &yylloc, YYLEX_PARAM)
#else
#define YYLEX           yylex(&yylval, &yylloc)
#endif
#else /* not YYLSP_NEEDED */
#ifdef YYLEX_PARAM
#define YYLEX           yylex(&yylval, YYLEX_PARAM)
#else
#define YYLEX           yylex(&yylval)
#endif
#endif /* not YYLSP_NEEDED */
#endif

/* If nonreentrant, generate the variables here */

#ifndef YYPURE

int   yychar;                 /*  the lookahead symbol            */
YYSTYPE     yylval;                 /*  the semantic value of the       */
                        /*  lookahead symbol                */

#ifdef YYLSP_NEEDED
YYLTYPE yylloc;               /*  location data for the lookahead */
                        /*  symbol                    */
#endif

int yynerrs;                  /*  number of parse errors so far       */
#endif  /* not YYPURE */

#if YYDEBUG != 0
int yydebug;                  /*  nonzero means print parse trace */
/* Since this is uninitialized, it does not stop multiple parsers
   from coexisting.  */
#endif

/*  YYINITDEPTH indicates the initial size of the parser's stacks */

#ifndef     YYINITDEPTH
#define YYINITDEPTH 200
#endif

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

#if YYMAXDEPTH == 0
#undef YYMAXDEPTH
#endif

#ifndef YYMAXDEPTH
#define YYMAXDEPTH 10000
#endif

/* Define __yy_memcpy.  Note that the size argument
   should be passed with type unsigned int, because that is what the non-GCC
   definitions require.  With GCC, __builtin_memcpy takes an arg
   of type size_t, but it can handle unsigned int.  */

#if __GNUC__ > 1        /* GNU C and GNU C++ define this.  */
#define __yy_memcpy(TO,FROM,COUNT)  __builtin_memcpy(TO,FROM,COUNT)
#else                   /* not GNU C or C++ */
#ifndef __cplusplus

/* This is the most reliable way to avoid incompatibilities
   in available built-in functions on various systems.  */
static void
__yy_memcpy (to, from, count)
     char *to;
     char *from;
     unsigned int count;
{
  register char *f = from;
  register char *t = to;
  register int i = count;

  while (i-- > 0)
    *t++ = *f++;
}

#else /* __cplusplus */

/* This is the most reliable way to avoid incompatibilities
   in available built-in functions on various systems.  */
static void
__yy_memcpy (char *to, char *from, unsigned int count)
{
  register char *t = to;
  register char *f = from;
  register int i = count;

  while (i-- > 0)
    *t++ = *f++;
}

#endif
#endif



/* 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
#ifdef __cplusplus
#define YYPARSE_PARAM_ARG void *YYPARSE_PARAM
#define YYPARSE_PARAM_DECL
#else /* not __cplusplus */
#define YYPARSE_PARAM_ARG YYPARSE_PARAM
#define YYPARSE_PARAM_DECL void *YYPARSE_PARAM;
#endif /* not __cplusplus */
#else /* not YYPARSE_PARAM */
#define YYPARSE_PARAM_ARG
#define YYPARSE_PARAM_DECL
#endif /* not YYPARSE_PARAM */

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

int
yyparse(YYPARSE_PARAM_ARG)
     YYPARSE_PARAM_DECL
{
  register int yystate;
  register int yyn;
  register short *yyssp;
  register YYSTYPE *yyvsp;
  int yyerrstatus;      /*  number of tokens to shift before error messages enabled */
  int yychar1 = 0;            /*  lookahead token as an internal (translated) token number */

  short     yyssa[YYINITDEPTH];     /*  the state stack                 */
  YYSTYPE yyvsa[YYINITDEPTH]; /*  the semantic value stack        */

  short *yyss = yyssa;        /*  refer to the stacks thru separate pointers */
  YYSTYPE *yyvs = yyvsa;      /*  to allow yyoverflow to reallocate them elsewhere */

#ifdef YYLSP_NEEDED
  YYLTYPE yylsa[YYINITDEPTH]; /*  the location stack              */
  YYLTYPE *yyls = yylsa;
  YYLTYPE *yylsp;

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

  int yystacksize = YYINITDEPTH;
  int yyfree_stacks = 0;

#ifdef YYPURE
  int yychar;
  YYSTYPE yylval;
  int yynerrs;
#ifdef YYLSP_NEEDED
  YYLTYPE yylloc;
#endif
#endif

  YYSTYPE yyval;        /*  the variable used to return           */
                        /*  semantic values from the action */
                        /*  routines                        */

  int yylen;

#if YYDEBUG != 0
  if (yydebug)
    fprintf(stderr, "Starting parse\n");
#endif

  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 - 1;
  yyvsp = yyvs;
#ifdef YYLSP_NEEDED
  yylsp = yyls;
#endif

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

  *++yyssp = yystate;

  if (yyssp >= yyss + yystacksize - 1)
    {
      /* 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;
#ifdef YYLSP_NEEDED
      YYLTYPE *yyls1 = yyls;
#endif

      /* Get the current used size of the three stacks, in elements.  */
      int size = yyssp - yyss + 1;

#ifdef yyoverflow
      /* Each stack pointer address is followed by the size of
       the data in use in that stack, in bytes.  */
#ifdef YYLSP_NEEDED
      /* 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, size * sizeof (*yyssp),
             &yyvs1, size * sizeof (*yyvsp),
             &yyls1, size * sizeof (*yylsp),
             &yystacksize);
#else
      yyoverflow("parser stack overflow",
             &yyss1, size * sizeof (*yyssp),
             &yyvs1, size * sizeof (*yyvsp),
             &yystacksize);
#endif

      yyss = yyss1; yyvs = yyvs1;
#ifdef YYLSP_NEEDED
      yyls = yyls1;
#endif
#else /* no yyoverflow */
      /* Extend the stack our own way.  */
      if (yystacksize >= YYMAXDEPTH)
      {
        yyerror("parser stack overflow");
        if (yyfree_stacks)
          {
            free (yyss);
            free (yyvs);
#ifdef YYLSP_NEEDED
            free (yyls);
#endif
          }
        return 2;
      }
      yystacksize *= 2;
      if (yystacksize > YYMAXDEPTH)
      yystacksize = YYMAXDEPTH;
#ifndef YYSTACK_USE_ALLOCA
      yyfree_stacks = 1;
#endif
      yyss = (short *) YYSTACK_ALLOC (yystacksize * sizeof (*yyssp));
      __yy_memcpy ((char *)yyss, (char *)yyss1,
               size * (unsigned int) sizeof (*yyssp));
      yyvs = (YYSTYPE *) YYSTACK_ALLOC (yystacksize * sizeof (*yyvsp));
      __yy_memcpy ((char *)yyvs, (char *)yyvs1,
               size * (unsigned int) sizeof (*yyvsp));
#ifdef YYLSP_NEEDED
      yyls = (YYLTYPE *) YYSTACK_ALLOC (yystacksize * sizeof (*yylsp));
      __yy_memcpy ((char *)yyls, (char *)yyls1,
               size * (unsigned int) sizeof (*yylsp));
#endif
#endif /* no yyoverflow */

      yyssp = yyss + size - 1;
      yyvsp = yyvs + size - 1;
#ifdef YYLSP_NEEDED
      yylsp = yyls + size - 1;
#endif

#if YYDEBUG != 0
      if (yydebug)
      fprintf(stderr, "Stack size increased to %d\n", yystacksize);
#endif

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

#if YYDEBUG != 0
  if (yydebug)
    fprintf(stderr, "Entering state %d\n", yystate);
#endif

  goto 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)
    {
#if YYDEBUG != 0
      if (yydebug)
      fprintf(stderr, "Reading a token: ");
#endif
      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 */

#if YYDEBUG != 0
      if (yydebug)
      fprintf(stderr, "Now at end of input.\n");
#endif
    }
  else
    {
      yychar1 = YYTRANSLATE(yychar);

#if YYDEBUG != 0
      if (yydebug)
      {
        fprintf (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
        fprintf (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.  */

#if YYDEBUG != 0
  if (yydebug)
    fprintf(stderr, "Shifting token %d (%s), ", yychar, yytname[yychar1]);
#endif

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

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

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

  yystate = yyn;
  goto yynewstate;

/* Do the default action for the current state.  */
yydefault:

  yyn = yydefact[yystate];
  if (yyn == 0)
    goto yyerrlab;

/* Do a reduction.  yyn is the number of a rule to reduce with.  */
yyreduce:
  yylen = yyr2[yyn];
  if (yylen > 0)
    yyval = yyvsp[1-yylen]; /* implement default value of the action */

#if YYDEBUG != 0
  if (yydebug)
    {
      int i;

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

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


  switch (yyn) {

case 5:
{ INBISON->ClearParams(); ;
    break;}
case 6:
{ yyval=MushcoreEnv::Sgl().VariableGet(yyvsp[0].StringGet().substr(1, string::npos)).StringGet(); INBISON->ClearParams(); ;
    break;}
case 7:
{ yyval=MushcoreEnv::Sgl().VariableGet(yyvsp[0].StringGet().substr(1, string::npos)); ;
    break;}
case 8:
{ yyval = yyvsp[0].StringGet();;
    break;}
case 9:
{ yyval = yyvsp[0].ValGet();;
    break;}
case 10:
{ yyval = yyvsp[-2]+yyvsp[0]; ;
    break;}
case 11:
{ yyval = yyvsp[-2]-yyvsp[0]; ;
    break;}
case 12:
{ yyval = yyvsp[-2]*yyvsp[0]; ;
    break;}
case 13:
{ yyval = yyvsp[-2]/yyvsp[0]; ;
    break;}
case 14:
{ yyval = -yyvsp[0].ValGet(); ;
    break;}
case 15:
{ yyval = yyvsp[-1]; ;
    break;}
case 16:
{
    INBISON->PushParam(yyvsp[0]);
;
    break;}
case 23:
{
    yyval=INBISON->Despatch(yyvsp[-2]);
;
    break;}
}
   /* the action file gets copied in in place of this dollarsign */

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

#if YYDEBUG != 0
  if (yydebug)
    {
      short *ssp1 = yyss - 1;
      fprintf (stderr, "state stack now");
      while (ssp1 != yyssp)
      fprintf (stderr, " %d", *++ssp1);
      fprintf (stderr, "\n");
    }
#endif

  *++yyvsp = yyval;

#ifdef YYLSP_NEEDED
  yylsp++;
  if (yylen == 0)
    {
      yylsp->first_line = yylloc.first_line;
      yylsp->first_column = yylloc.first_column;
      yylsp->last_line = (yylsp-1)->last_line;
      yylsp->last_column = (yylsp-1)->last_column;
      yylsp->text = 0;
    }
  else
    {
      yylsp->last_line = (yylsp+yylen-1)->last_line;
      yylsp->last_column = (yylsp+yylen-1)->last_column;
    }
#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 */

  if (! yyerrstatus)
    /* If not already recovering from an error, report this error.  */
    {
      ++yynerrs;

#ifdef YYERROR_VERBOSE
      yyn = yypact[yystate];

      if (yyn > YYFLAG && yyn < YYLAST)
      {
        int size = 0;
        char *msg;
        int x, count;

        count = 0;
        /* Start X at -yyn if nec to avoid negative indexes in yycheck.  */
        for (x = (yyn < 0 ? -yyn : 0);
             x < (sizeof(yytname) / sizeof(char *)); x++)
          if (yycheck[x + yyn] == x)
            size += strlen(yytname[x]) + 15, count++;
        msg = (char *) malloc(size + 15);
        if (msg != 0)
          {
            strcpy(msg, "parse error");

            if (count < 5)
            {
              count = 0;
              for (x = (yyn < 0 ? -yyn : 0);
                   x < (sizeof(yytname) / sizeof(char *)); x++)
                if (yycheck[x + yyn] == x)
                  {
                  strcat(msg, count == 0 ? ", expecting `" : " or `");
                  strcat(msg, yytname[x]);
                  strcat(msg, "'");
                  count++;
                  }
            }
            yyerror(msg);
            free(msg);
          }
        else
          yyerror ("parse error; also virtual memory exceeded");
      }
      else
#endif /* YYERROR_VERBOSE */
      yyerror("parse error");
    }

  goto yyerrlab1;
yyerrlab1:   /* here on error raised explicitly by an action */

  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;

#if YYDEBUG != 0
      if (yydebug)
      fprintf(stderr, "Discarding token %d (%s).\n", yychar, yytname[yychar1]);
#endif

      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. */

#if 0
  /* This is wrong; only states that explicitly want error tokens
     should shift them.  */
  yyn = yydefact[yystate];  /* If its default is to accept any token, ok.  Otherwise pop it.*/
  if (yyn) goto yydefault;
#endif

yyerrpop:   /* pop the current state because it cannot handle the error token */

  if (yyssp == yyss) YYABORT;
  yyvsp--;
  yystate = *--yyssp;
#ifdef YYLSP_NEEDED
  yylsp--;
#endif

#if YYDEBUG != 0
  if (yydebug)
    {
      short *ssp1 = yyss - 1;
      fprintf (stderr, "Error: state stack now");
      while (ssp1 != yyssp)
      fprintf (stderr, " %d", *++ssp1);
      fprintf (stderr, "\n");
    }
#endif

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;

#if YYDEBUG != 0
  if (yydebug)
    fprintf(stderr, "Shifting error token, ");
#endif

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

  yystate = yyn;
  goto yynewstate;

 yyacceptlab:
  /* YYACCEPT comes here.  */
  if (yyfree_stacks)
    {
      free (yyss);
      free (yyvs);
#ifdef YYLSP_NEEDED
      free (yyls);
#endif
    }
  return 0;

 yyabortlab:
  /* YYABORT comes here.  */
  if (yyfree_stacks)
    {
      free (yyss);
      free (yyvs);
#ifdef YYLSP_NEEDED
      free (yyls);
#endif
    }
  return 1;
}


int yyerror(char *s)
{
#ifdef MUSHCORE_DEBUG
    cerr << "Bison syntax error: " << s << endl;
#endif
    return 0;
}

int
MushcoreBison::Parse(MushcoreCommand& inCommand)
{
    m_command=&inCommand;
    return yyparse(this);
}

void
MushcoreBison::PushParam(MushcoreScalar& inParam)
{
    m_command->PushParam(inParam);
}

void
MushcoreBison::ClearParams(void)
{
    m_command->ClearParams();
}

MushcoreScalar 
MushcoreBison::Despatch(MushcoreScalar& inName)
{
    string name;
    inName.Get(name);
    m_command->NameSet(name);
    return m_command->Despatch();
}


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